U.S. patent application number 15/607627 was filed with the patent office on 2018-05-24 for ventilation module for ventilation seat.
The applicant listed for this patent is Hyundai Motor Company, Kia Motors Corporation. Invention is credited to So La Chung, Jae Woong Kim, Sang Shin Lee, Man Ju Oh, Jae Woo Park, So Yoon Park.
Application Number | 20180145239 15/607627 |
Document ID | / |
Family ID | 62147284 |
Filed Date | 2018-05-24 |
United States Patent
Application |
20180145239 |
Kind Code |
A1 |
Oh; Man Ju ; et al. |
May 24, 2018 |
Ventilation Module for Ventilation Seat
Abstract
A ventilation module can be used with a ventilation seat for a
vehicle. A thermoelectric air-conditioning part has a
thermoelectric unit performing heat absorption and heat generation
by using a Peltier effect when electric power is applied, a cooling
unit provided at a first side of the thermoelectric unit, and a
heat dissipation unit provided at a second side of the
thermoelectric unit. The module is configured so that air that is
supplied from a blower is cooled by the thermoelectric
air-conditioning part, passes through a cooling fin of the cooling
unit, and is discharged to an interior of the vehicle through a
seat cushion. The module is also configured so that air that is
supplied from the blower is heated by the thermoelectric
air-conditioning part, passes through a heat dissipating fin of the
heat dissipation unit, and is discharged through the heat
dissipation path.
Inventors: |
Oh; Man Ju; (Yongin-si,
KR) ; Lee; Sang Shin; (Suwon-si, KR) ; Park;
Jae Woo; (Ansan-si, KR) ; Park; So Yoon;
(Suwon-si, KR) ; Kim; Jae Woong; (Hwaseong-si,
KR) ; Chung; So La; (Seoul, KR) |
|
Applicant: |
Name |
City |
State |
Country |
Type |
Hyundai Motor Company
Kia Motors Corporation |
Seoul
Seoul |
|
KR
KR |
|
|
Family ID: |
62147284 |
Appl. No.: |
15/607627 |
Filed: |
May 29, 2017 |
Current U.S.
Class: |
1/1 |
Current CPC
Class: |
H01L 35/28 20130101;
B60N 2/5685 20130101; F25B 21/02 20130101; B60N 2/5635 20130101;
B60N 2/5642 20130101; H01L 35/30 20130101; B60N 2/5657 20130101;
F25B 2321/0251 20130101; B60N 2/5692 20130101 |
International
Class: |
H01L 35/30 20060101
H01L035/30; B60N 2/56 20060101 B60N002/56 |
Foreign Application Data
Date |
Code |
Application Number |
Nov 22, 2016 |
KR |
10-2016-0155893 |
Claims
1. A ventilation module for a ventilation seat for a vehicle, the
module comprising: a thermoelectric air-conditioning part having a
thermoelectric unit performing heat absorption and heat generation
by using a Peltier effect when electric power is applied, a cooling
unit provided at a first side of the thermoelectric unit, and a
heat dissipation unit provided at a second side of the
thermoelectric unit; a cool air duct, the cooling unit being
located in the cool air duct, wherein the module is configured so
that air that is supplied from a blower is cooled by the
thermoelectric air-conditioning part, passes through a cooling fin
of the cooling unit, and is discharged to an interior of the
vehicle through a seat cushion; and a heat dissipation path, the
heat dissipation unit being located in the heat dissipation path,
wherein the module is configured so that air that is supplied from
the blower is heated by the thermoelectric air-conditioning part,
passes through a heat dissipating fin of the heat dissipation unit,
and is discharged through the heat dissipation path, wherein by
increasing a resistance to airflow in the heat dissipation unit
more than that in the cooling unit, an amount of airflow flowing to
the cooling unit is increased more than that flowing to the heat
dissipation unit.
2. The module of claim 1, wherein an area in which the heat
dissipating fin is installed is larger than an area in which the
cooling fin is installed.
3. The module of claim 1, wherein an area in which the heat
dissipating fin is installed is larger than an area in which the
cooling fin is installed so that the resistance to airflow in the
heat dissipation unit is increased and thus the amount of airflow
in the cooling unit is increased.
4. The module of claim 1, wherein the heat dissipating fin is
provided in a zigzag shape by being bent a predetermined number of
times.
5. The module of claim 1, wherein the heat dissipating fin is
provided in a zigzag shape by being bent a predetermined number of
times, so that the resistance to airflow in the heat dissipation
unit is increased and thus the amount of airflow in the cooling
unit is increased.
6. The module of claim 1, wherein the heat dissipating fin combined
with the heat dissipation unit of the thermoelectric
air-conditioning part is provided by being stacked in one or more
layers, so that air introduced to the heat dissipation unit can
pass through one layer and then passes through a remaining
layer.
7. The module of claim 1, wherein the heat dissipating fin combined
with the heat dissipation unit of the thermoelectric
air-conditioning part is provided by being stacked in one or more
layers, so that air introduced to the heat dissipation unit passes
through one layer and then passes through a remaining layer, so
that the resistance to airflow in the heat dissipation unit is
increased and thus the amount of airflow in the cooling unit is
increased.
8. The module of claim 1, wherein the cooling fin of the cooling
unit is provided by being bent a plurality of times in a
streamlined-shape such that the cooling unit has a wave-shaped path
in which air flows from an inlet to an outlet.
9. The module of claim 1, wherein a lateral cross-section of the
cooling fin is formed such that a first side thereof is higher than
a second side thereof so as to correspond to a shape of the cool
air duct.
10. The module of claim 1, wherein the thermoelectric
air-conditioning part is provided with a moisture absorbing
material that can condensation water of the cooling unit.
11. The module of claim 1, further comprising a moisture absorbing
material at the cooling unit and the heat dissipation unit, the
moisture absorbing material configured to connect the cooling unit
and the heat dissipation unit to each other, such that condensation
water of the cooling unit is absorbed and moved to the heat
dissipation unit by the moisture absorbing material, thereby
increasing a cooling effect for the heat dissipation unit, and the
condensation water moved to the heat dissipation unit is
evaporated, thereby obtaining a cooling effect of evaporation.
12. A seat for a vehicle, the seat comprising: a seat back; a seat
cushion adjacent the seat back; a blower; a thermoelectric unit
configured to perform heat absorption and heat generation by using
a Peltier effect when electric power is applied; a cool air duct; a
cooling unit located in the cool air duct and at a first side of
the thermoelectric unit, the cooling unit having a cooling fin; a
heat dissipation path; and a heat dissipation unit a heat
dissipation path and at a second side of the thermoelectric unit;
wherein the seat is configured so that air that is supplied from
the blower is cooled by the thermoelectric unit, passes through the
cooling fin, and is discharged through the seat cushion; wherein
the seat is configured so that the air that is supplied from the
blower is heated by the thermoelectric unit, passes through a heat
dissipating fin of the heat dissipation unit, and is discharged
through the heat dissipation path; and wherein a resistance to
airflow in the heat dissipation unit is greater than a resistance
to air flow in the cooling unit.
13. The seat of claim 12, wherein an area in which the heat
dissipating fin is installed is larger than an area in which the
cooling fin is installed.
14. The seat of claim 12, wherein the heat dissipating fin is
provided in a zigzag shape by being bent a predetermined number of
times.
15. The seat of claim 12, wherein the heat dissipating fin and the
heat dissipation unit are stacked in one or more layers.
16. The seat of claim 12, wherein the cooling fin is bent a
plurality of times in a streamlined-shape.
17. The seat of claim 16, wherein the cooling unit has a
wave-shaped path in which air can flow from an inlet to an
outlet.
18. The seat of claim 12, wherein a lateral cross-section of the
cooling fin is formed such that a first side thereof is higher than
a second side thereof so as to correspond to a shape of the cool
air duct.
19. The seat of claim 12, further comprising a moisture absorbing
material at the cooling unit and the heat dissipation unit.
Description
CROSS-REFERENCE TO RELATED APPLICATIONS
[0001] The present application claims priority to Korean Patent
Application No. 10-2016-0155893, filed on Nov. 22, 2016, the entire
contents of which is incorporated herein for all purposes by this
reference.
TECHNICAL FIELD
[0002] The present invention relates generally to a ventilation
module for a ventilation seat.
BACKGROUND
[0003] In general, a vehicle seat has a seat cushion that plays a
role of providing a comfortable seating feeling to a user. In
recent years, there has been a trend that in addition to the basic
functionality of vehicle parts, various kinds of convenience
devices are being provided in parts such as the vehicle seat. Among
these convenience devices for a vehicle seat, a seat heater
provided with a heating wire for providing warmth during winter
operation is widely employed. Such a seat heater is applied to a
large number of vehicles because there is no difficulty in terms of
design and installation. However, when such a heating wire is used,
there is a limit to uniformly distributing warmth to a user.
[0004] In an effort to solve this problem, a method in which a
cooler is provided on the vehicle seat and a thermoelectric device
(TED) is mounted on the cooler to supply heated air to the vehicle
seat has been developed. However, when air is heated by using the
thermoelectric device, there is a problem in that an
anti-overheating device is required to prevent damage to the
vehicle seat due to overheating.
[0005] In addition, when the thermoelectric device is used, airflow
that will be discarded due to the characteristics of thermoelectric
device occurs, and airflow is reduced due to the vehicle seat
causing airflow resistance whereby a temperature difference in an
outlet structure is increased. Accordingly, the amount of heat
dissipation for cooling a user is reduced, thereby resulting in
performance degradation. Moreover, since air velocity is lowered
and the temperature difference is increased, there is a
disadvantage in that a large amount of condensation water is
generated, and the amount of loss of air is increased.
[0006] The foregoing is intended merely to aid in the understanding
of the background of the present invention, and is not intended to
mean that the present invention falls within the purview of the
related art that is already known to those skilled in the art.
SUMMARY
[0007] The present invention relates generally to a ventilation
module for a ventilation seat. In embodiments, the module is
installed in a vehicle seat and is configured to discharge air to
an interior of a vehicle through a blower, thereby being capable of
allowing more air to be supplied to a user.
[0008] Accordingly, the present invention has been made keeping in
mind the above problems occurring in the related art, and the
present invention is intended to propose a ventilation module for a
ventilation seat, the module being capable of increasing the amount
of heat dissipation to improve performance of the module, and of
efficiently removing condensation water in the module.
[0009] According to one aspect of the present invention, a
ventilation module for a ventilation seat is provided. The
ventilation module is provided in a vehicle seat and is configured
to discharge air to an interior of a vehicle through a blower. The
module includes a thermoelectric air-conditioning part including a
thermoelectric unit performing heat absorption and heat generation
by using a Peltier effect when electric power is applied. A cooling
unit is provided at a first side of the thermoelectric unit, and a
heat dissipation unit is provided at a second side of the
thermoelectric unit. A cool air duct in which the cooling unit is
placed, and through which air that is supplied from the blower, is
cooled by the thermoelectric air-conditioning part, and passes
through a cooling fin of the cooling unit, is discharged to the
interior of the vehicle through a seat cushion. A heat dissipation
path in which the heat dissipation unit is placed, and through
which air that is supplied from the blower, is heated by the
thermoelectric air-conditioning part, and passes through a heat
dissipating fin of the heat dissipation unit, is discharged. By
increasing a resistance to airflow in the heat dissipation unit
more than that in the cooling unit, an amount of airflow flowing to
the cooling unit is increased more than that flowing to the heat
dissipation unit.
[0010] An area in which the heat dissipating fin is installed may
be larger than that in which the cooling fin is installed, so that
the resistance to airflow in the heat dissipation unit is increased
and thus the amount of airflow in the cooling unit is
increased.
[0011] The heat dissipation fin may be provided in a zigzag shape
by being bent a predetermined number of times, so that the
resistance to airflow in the heat dissipation unit is increased and
thus the amount of airflow in the cooling unit is increased.
[0012] The heat dissipating fin combined with the heat dissipation
unit of the thermoelectric air-conditioning part may be provided by
being stacked in one or more layers, so that air introduced to the
heat dissipation unit passes through one layer and then passes
through a remaining layer, whereby the resistance to airflow in the
heat dissipation unit is increased and thus the amount of airflow
in the cooling unit is increased.
[0013] The cooling fin of the cooling unit may be provided by being
bent a plurality of times in a streamlined-shape such that the
cooling unit has a wave-shaped path in which air flows from an
inlet to an outlet.
[0014] A lateral cross-section of the cooling fin may be formed
such that a first side thereof is higher than a second side thereof
so as to correspond to a shape of the cool air duct.
[0015] The thermoelectric air-conditioning part may be provided
with a moisture absorbing material, the moisture absorbing material
absorbing condensation water of the cooling unit.
[0016] The moisture absorbing material may be provided at the
cooling unit and the heat dissipation unit and may connect the
cooling unit and the heat dissipation unit, such that condensation
water of the cooling unit is absorbed and moved to the heat
dissipation unit by the moisture absorbing material, thereby
increasing a cooling effect for the heat dissipation unit, and the
condensation water moved to the heat dissipation unit is
evaporated, thereby obtaining a cooling effect of evaporation
heat.
[0017] According to the ventilation module for the ventilation seat
with the above-described configuration, a cooling efficiency
equation is used in which the temperature difference between the
cooling unit and the heat dissipation unit is increased by further
providing a heat pipe and the moisture absorbing material, the area
of the heat dissipation unit is larger than that of the cooling
unit, and the resistance to airflow flowing to the heat dissipation
unit is increased so that the amount of airflow flowing to the
cooling unit is increased more than that flowing to the heat
dissipation unit 230. Thus, the amount of heat dissipation is
increased, whereby more pleasant cooling air can be provided to a
user.
BRIEF DESCRIPTION OF THE DRAWINGS
[0018] The above and other objects, features and other advantages
of the present invention will be more clearly understood from the
following detailed description when taken in conjunction with the
accompanying drawings, in which:
[0019] FIG. 1 is a view showing a seat mounted with a ventilation
module for a ventilation seat according to the present
invention;
[0020] FIG. 2 is a view specifically showing the ventilation
module;
[0021] FIGS. 3 to 6 are views showing first to fourth embodiments
of FIG. 2; and
[0022] FIGS. 7 to 11 are views showing embodiments in which a
moisture absorbing material is further provided to FIG. 2.
DETAILED DESCRIPTION OF ILLUSTRATIVE EMBODIMENTS
[0023] Hereinbelow, exemplary embodiments of the present invention
will be described in detail with reference to the accompanying
drawings. Throughout the drawings, the same reference numerals will
refer to the same or like parts.
[0024] FIG. 1 is a view showing a seat mounted with a ventilation
module for a ventilation seat according to the present invention,
FIG. 2 is a view specifically showing the ventilation module, FIGS.
3 to 6 are views showing first to fourth embodiments of FIG. 2, and
FIGS. 7 to 11 are views showing embodiments in which a moisture
absorbing material is further provided to FIG. 2.
[0025] The ventilation module for the ventilation seat according to
the preferred embodiment of the present invention is installed in a
vehicle seat 100 and configured to discharge air to an interior of
a vehicle through a blower 300, the module including: a
thermoelectric air-conditioning part 200 provided with a
thermoelectric unit 250 performing heat absorption and heat
generation by using a Peltier effect when electric power is
applied, a cooling unit 210 provided at a first side of the
thermoelectric unit 250, and a heat dissipation unit 230 provided
at a second side of the thermoelectric unit 250; a cool air duct
400 in which the cooling unit 210 is placed, and through which air
that is supplied from the blower 300, is cooled by the
thermoelectric air-conditioning part 200, and passes through a
cooling fin 211 of the cooling unit 210, is discharged to an
interior of the vehicle through a seat cushion 110; and a heat
dissipation path 500 in which the heat dissipation unit 230 is
placed, and through which air that is supplied from the blower 300,
is heated by the thermoelectric air-conditioning part 200, and
passes through a heat dissipating fin 231 of the heat dissipation
unit 230, is discharged, wherein by increasing a resistance to
airflow in the heat dissipation unit 230 more than that in the
cooling unit 210, the amount of air flowing to the cooling unit 210
is increased more than the heat dissipation unit 230. Since the
above Peltier effect is a known technique, a detailed description
thereof will be omitted.
[0026] In other words, the present invention relates to the vehicle
seat 100 and, more particularly, to the ventilation module for the
ventilation seat provided under the seat cushion 110 and supplying
cool air to a user H, wherein air sucked by the blower 300 is
cooled or heated by heat absorbed or generated by the Peltier
effect at the thermoelectric unit 250, whereafter cooling air is
supplied to the user H through the cold-air duct 400 and heated air
is discharged through the heat dissipation path 500. Here, in the
present invention, the resistance to airflow in the heat
dissipation unit 230 is increased more than that in the cooling
unit 210, whereby the amount of airflow flowing to the cooling unit
210 can be increased more than that flowing to the heat dissipation
unit 230.
[0027] Since a cooling effect for the thermoelectric
air-conditioning part 200 increases in proportion to a temperature
difference, an inflow velocity of air, and an area
(Qc=.DELTA.T.times.Vin.times.A, where Qc is the amount of heat
dissipation, T is temperature, Vin is an inflow velocity, and A is
an area), the thermoelectric air-conditioning part 200 has a
structure in which an area A and a resistance to airflow of the
heat dissipation unit 230 are increased, and the inflow velocity
Vin flowing to the cooling unit 210 is increased, whereby the
amount of heat dissipation Qc is increased.
[0028] Embodiments of the present invention will now be described
in more detail with reference to the drawings.
[0029] First, a first embodiment of the thermoelectric
air-conditioning part 200 will be described with reference to FIG.
3.
[0030] As shown in FIG. 3, the thermoelectric air-conditioning part
200 includes the cooling unit 210 at the first side thereof and the
heat dissipation unit 230 at the second side thereof with the
thermoelectric unit 250 interposed therebetween. An area in which
the heat dissipating fins 231 of the heat dissipation unit 230 are
installed is larger than an area in which the cooling fins 211 of
the cooling unit 210 are installed, and the number of the heat
dissipating fins 231 is larger than that of the cooling fins 211,
whereby when air introduced from the blower 300 passes through the
cooling fins 211 and the heat dissipating fins 231, the heat
dissipating fins 231 act as a resistor and thus the resistance to
airflow in the heat dissipation unit 230 is increased. Accordingly,
the amount of airflow flowing to the cooling unit 210 is increased
more than that flowing to the heat dissipation unit 230. Thus, in
the first embodiment, by increasing both the area and the
resistance to airflow of the heat dissipation unit 230, the cooling
effect is increased in such a manner that more cooling air can be
provided to the user H.
[0031] FIG. 4 shows a second embodiment of the thermoelectric
air-conditioning part 200 according to the present invention. As
shown in the drawing, the heat dissipating fins 231 of the heat
dissipation unit 230 are provided in a zigzag shape by being bent a
predetermined number of times. Accordingly, even if the cooling
unit 210 and the heat dissipation unit 230 have the same area, the
resistance to airflow introduced through the blower 300 is
increased in the heat dissipation unit 230 by the heat dissipating
fins 231. Thus, the amount of airflow in the cooling unit 210 is
increased so that more cooling air can be provided to the user
H.
[0032] FIG. 5 shows a third embodiment of the thermoelectric air
conditioning unit 200 of the present invention. As shown in the
drawing, the heat dissipating fins 231 combined with the heat
dissipation unit 230 of the thermoelectric air-conditioning part
200 are provided to be stacked in one or more layers F.
Accordingly, air introduced to the heat dissipation unit 230 passes
through one layer F formed by the heat dissipating fins 231 and
then passes through a remaining layer F, whereby the resistance to
airflow introduced through the blower 300 is increased in the heat
dissipation unit 230 in such a manner that the amount of airflow in
the cooling unit 210 is increased and thus more cooling air can be
provided to the user H. In particular, a total length b in which
the heat dissipating fins 231 are installed may be set to be 1.5
times longer than a total length a in which the cooling fins 211
are installed.
[0033] FIG. 6 shows a fourth embodiment of the thermoelectric
air-conditioning part 200 of the present invention, and is
configured similarly to the first embodiment shown in FIG. 3.
However, in the case of the fourth embodiment, a heat pipe 270 is
further provided. The heat pipe 270 functions to assist cooling
performance of the cooling unit 210. In other words, the heat pipe
270 is provided at a location between the cooling unit 210 and the
heat dissipation unit 230 to enable heat exchange therebetween.
Accordingly, the area in which the heat dissipating fins 231 of the
heat dissipation unit 230 are installed is larger than the area in
which the cooling fins 211 of the cooling unit 210 are installed,
the number of the heat dissipating fins 231 is larger than that of
the cooling fins 211, and the heat pipe 270 is installed at a
portion where the heat dissipating fins 231 are provided, whereby
when air introduced through the blower 300 passes the
thermoelectric air-conditioning part 200, the heat dissipating fins
231 act as a resistor and thus the resistance to airflow in the
heat dissipation unit 230 can be increased, the heat pipe 270
increases heat exchange performance between the cooling unit 210
and the heat dissipation unit 230, and thus a cooling efficiency
can be increased. Thus, by increasing both the area and the
resistance to airflow of the heat dissipation unit 230 while the
amount of air flowing to the cooling unit 210 is increased more
than that flowing to the heat dissipation unit 230, the cooling
effect can be increased in such a manner that more cooling air can
be provided to the user H.
[0034] Further, as shown in FIGS. 7 to 11, the thermoelectric
air-conditioning part 200 is provided with a moisture absorbing
material 600, such that condensation water in the cooling unit 210
is absorbed by the moisture absorbing material 600. Accordingly,
condensation water is prevented from being formed in the cooling
fins 211 to prevent deterioration in cooling efficiency. Then, the
absorbed condensation water is moved to the heat dissipation unit
230 by the moisture absorbing material, thereby increasing the
cooling effect for the heat dissipation unit 230, and condensation
water moved to the heat dissipation unit 230 is evaporated, thereby
achieving a cooling effect of evaporation. Although the moisture
absorbing material 600 is provided at the thermoelectric
air-conditioning part 200 in FIGS. 7 to 11, the moisture absorbing
material 600 may be provided to the first to fourth
embodiments.
[0035] Accordingly, FIG. 7 shows fifth to sixth embodiments of the
thermoelectric air-conditioning part 200 according to the present
invention, wherein the moisture absorbing material 600 is further
provided to the first or the fourth embodiment shown in FIG. 3 or
FIG. 6. (FIG. 7 shows that the heat pipe 270 is installed, however,
the heat pipe 270 may be installed or omitted.)
[0036] As such, the area in which the heat dissipating fins 231 of
the heat dissipation unit 230 are installed is larger than the area
in which the cooling fins 211 of the cooling unit 210 are
installed, the number of the heat dissipating fins 231 is larger
than the cooling fins 211, the heat pipe 270 is installed at the
portion where the heat dissipating fins 231 are provided, and the
moisture absorbing material 600 is provided at the cooling unit 210
and the heat dissipation unit 230 and is configured to connect the
cooling unit 210 and the heat dissipation unit 230. Accordingly,
when air introduced through the blower 300 passes through the
thermoelectric air conditioning unit 200, the heat dissipating fins
231 act as a resistor and thus the resistance to airflow in the
heat dissipation unit 230 can be increased, heat exchange can be
performed by the heat pipe 270, and condensation water formed in
the cooling unit 210 is absorbed and moved to the heat dissipating
fins 231 of the heat dissipation unit 230 by the moisture absorbing
material 600. Thus, by increasing both the area and the resistance
to airflow of the heat dissipation unit 230 while the amount of air
flowing to the cooling unit 210 is increased more than that flowing
to the heat dissipation unit 230, and by obtaining the cooling
effect of evaporation created when condensation water moved to the
heat dissipation unit 230 is evaporated by the heat dissipating
fins 231, the cooling effect for the thermoelectric
air-conditioning part 200 can be increased and thus more cooling
air can be provided to the user H.
[0037] FIGS. 8 to 10 show a seventh embodiment of the
thermoelectric air-conditioning part 200 of the present invention,
which is similar to the fourth embodiment of FIG. 6. However, in
the case of the seventh embodiment, the cooling fin 211 of the
cooling unit 210 is provided by being bent a plurality of times in
a streamlined-shape such that the cooling unit 210 has a
wave-shaped path in which air flows from an inlet to an outlet
(FIG. 10). In addition, a lateral cross-section of the cooling fin
211 is formed such that a first side thereof is higher than a
second side thereof so as to correspond to a shape of the cool air
duct 400. Here, the first side may be the inlet 410 side, and the
second side may be the outlet 430 side. At this time, the heat
dissipating fin 231 of the heat dissipation unit 230 is provided
such that a plurality of the heat dissipating fins 231 having a
small area is provided at a predetermined interval. Accordingly,
when air introduced through the blower 300 passes through the
thermoelectric air-conditioning part 200, in the cooling unit 210,
air is guided in accordance with a shape of the cooling fin 211 to
be able to easily flow, and in the heat dissipation unit 230, the
heat dissipating fin 231 acts as the resistor, thereby increasing
the resistance to airflow in the heat dissipation unit 230 and thus
the amount of air flowing to the cooling unit 210 is increased more
than that flowing to the heat dissipation unit 230. In addition,
the heat pipe 270 is provided between the cooling unit 210 and the
heat dissipation unit 230, and both the area and the resistance to
airflow of the heat dissipation unit 230 is increased, whereby the
cooling effect for the thermoelectric air-conditioning part 200 can
be increased and thus more cooling air can be provided to the user
H.
[0038] FIG. 11 shows an eighth embodiment of the thermoelectric
air-conditioning part 200 according to the present invention, in
which the moisture absorbing material 600 is further provided to
the third embodiment including the heat dissipation unit 230
comprised of a plurality of layers F shown in FIG. 5. Accordingly,
as in the third embodiment, the heat dissipating fins 231 combined
with the heat dissipation unit 230 of the thermoelectric
air-conditioning part 200 are provided to be stacked in one or more
layers F, and the moisture absorbing material 600 is configured to
connect the cooling unit 210 and the heat dissipation unit 230.
Thus, air introduced to the heat dissipation unit 230 passes
through the one layer F formed by stacking the heat dissipating
fins 231 and then passes through the remaining layer F, whereby the
resistance to airflow introduced through the blower 300 is
increased and thus airflow in the cooling unit 210 is increased. At
the same time, condensation water moved from the cooling unit 210
to the heat dissipation unit 230 is evaporated by the heat
dissipating fins 231, thereby obtaining the cooling effect of
evaporation in such a manner that the cooling effect for the
thermoelectric air-conditioning part 200 can be increased to
provide more cooling air to the user H. In particular, the total
length b in which the heat dissipating fins 231 are installed may
be set to be 1.5 times longer than the total length a in which the
cooling fins 211 are installed.
[0039] Thus, according to the ventilation module for the
ventilation seat according to the above-described embodiments of
the present invention, a cooling efficiency equation is used in
which the temperature difference between the cooling unit 210 and
the heat dissipation unit 230 is increased by further providing the
heat pipe 270 and the moisture absorbing material 600, the area of
the heat dissipation unit 230 is larger than that of the cooling
unit 210, and the resistance to airflow flowing to the heat
dissipation unit 230 is increased so that the amount of airflow
flowing to the cooling unit 210 is increased more than that flowing
to the heat dissipation unit 230. Thus, the amount of heat
dissipation is increased, whereby more pleasant cooling air can be
provided to the user H.
[0040] Although a preferred embodiment of the present invention has
been described for illustrative purposes, those skilled in the art
will appreciate that various modifications, additions and
substitutions are possible, without departing from the scope and
spirit of the invention as disclosed in the accompanying
claims.
* * * * *