U.S. patent application number 13/733657 was filed with the patent office on 2013-07-04 for cooling and heating apparatus for vehicle seats and method of controlling the same.
This patent application is currently assigned to KBAUTOTECH CO., LTD.. The applicant listed for this patent is Kbautotech Co., Ltd.. Invention is credited to Duck Chae Jun, Dal Young Jung, Tae Soo Sung.
Application Number | 20130167556 13/733657 |
Document ID | / |
Family ID | 48608034 |
Filed Date | 2013-07-04 |
United States Patent
Application |
20130167556 |
Kind Code |
A1 |
Jun; Duck Chae ; et
al. |
July 4, 2013 |
COOLING AND HEATING APPARATUS FOR VEHICLE SEATS AND METHOD OF
CONTROLLING THE SAME
Abstract
A cooling and heating apparatus for vehicle seats and a method
of controlling the same, which can control the cooling or heating
temperature by sensing the temperature of air before the air is
introduced into a cooling and heating module. The apparatus
includes: a blower fan installed in a housing so as to forcibly
blow cool or hot air to an air supply channel of a vehicle seat; a
temperature sensor mounted in the housing at a location at which
the temperature sensor comes into contact with sucked air and
senses a temperature of the sucked air; and a control unit
receiving a temperature signal from the temperature sensor and
controlling a cooling or heating temperature according to a
characteristic value that corresponds to a state of the sucked air
and is selected from characteristic values stored therein.
Inventors: |
Jun; Duck Chae;
(Gyeonggi-do, KR) ; Sung; Tae Soo;
(Chungcheongnam-do, KR) ; Jung; Dal Young;
(Gyeonggi-do, KR) |
|
Applicant: |
Name |
City |
State |
Country |
Type |
Kbautotech Co., Ltd.; |
Chungcheongnam-do |
|
KR |
|
|
Assignee: |
KBAUTOTECH CO., LTD.
Chungcheongnam-do
KR
|
Family ID: |
48608034 |
Appl. No.: |
13/733657 |
Filed: |
January 3, 2013 |
Current U.S.
Class: |
62/3.61 ;
454/75 |
Current CPC
Class: |
F25B 21/04 20130101;
B60N 2/5635 20130101; B60N 2/5642 20130101; F25B 2321/0212
20130101 |
Class at
Publication: |
62/3.61 ;
454/75 |
International
Class: |
F25B 21/04 20060101
F25B021/04 |
Foreign Application Data
Date |
Code |
Application Number |
Jan 4, 2012 |
KR |
10-2012-0001051 |
Claims
1. A cooling and heating apparatus for vehicle seats, comprising: a
blower fan installed in a housing so as to forcibly blow cool or
hot air to an air supply channel that is provided in a vehicle
seat; a temperature sensor that is mounted in the housing at a
location at which the temperature sensor comes into contact with
air sucked by the blower fan and that senses a temperature of the
sucked air; and a control unit receiving a temperature signal
indicative of the temperature of the sucked air sensed by the
temperature sensor and controlling a cooling or heating temperature
according to a characteristic value that corresponds to a state of
the sucked air and is selected from characteristic values stored
therein.
2. The cooling and heating apparatus for vehicle seats as set forth
in claim 1, wherein the housing is provided with a cooling and
heating module for performing a heat exchanging operation with the
air blown by the blower fan.
3. The cooling and heating apparatus for vehicle seats as set forth
in claim 2, wherein the temperature sensor is placed between the
blower fan and the cooling and heating module.
4. The cooling and heating apparatus for vehicle seats as set forth
in claim 2, wherein, when the cooling and heating apparatus is
installed in each of a back part and a seat part of vehicle seat,
the control unit independently controls the respective cooling and
heating apparatuses.
5. The cooling and heating apparatus for vehicle seats as set forth
in claim 2, wherein the cooling and heating module is formed using
a peltier element.
6. The cooling and heating apparatus for vehicle seats as set forth
in claim 5, wherein the temperature sensor is mounted to a through
hole that is formed in a predetermined portion of the housing.
7. The cooling and heating apparatus for vehicle seats as set forth
in claim 5, wherein the temperature sensor is mounted to a mounting
plate, the mounting plate being mounted to an inner surface of the
housing a bonding material.
8. The cooling and heating apparatus for vehicle seats as set forth
in claim 7, wherein the mounting plate is made of a transparent
material.
9. The cooling and heating apparatus for vehicle seats as set forth
in claim 5, wherein the temperature sensor is mounted to a mounting
plate, the mounting plate being provided with a fixing hole so as
to be engaged with a fixing protrusion that is formed on an inner
surface of the housing.
10. The cooling and heating apparatus for vehicle seats as set
forth in claim 5, wherein a heat insulating hole is formed through
the housing on a surface on which the cooling and heating module
comes into contact with the housing.
11. The cooling and heating apparatus for vehicle seats as set
forth in claim 1, wherein the temperature sensor is mounted to a
through hole that is formed in a predetermined portion of the
housing.
12. The cooling and heating apparatus for vehicle seats as set
forth in claim 1, wherein the temperature sensor is mounted to a
mounting plate, the mounting plate being mounted to an inner
surface of the housing a bonding material.
13. The cooling and heating apparatus for vehicle seats as set
forth in claim 12, wherein the mounting plate is made of a
transparent material.
14. The cooling and heating apparatus for vehicle seats as set
forth in claim 1, wherein the temperature sensor is mounted to a
mounting plate, the mounting plate being provided with a fixing
hole so as to be engaged with a fixing protrusion that is formed on
an inner surface of the housing.
15. The cooling and heating apparatus for vehicle seats as set
forth in claim 1, wherein a heat insulating hole is formed through
the housing on a surface on which the cooling and heating module
comes into contact with the housing.
16. A method of controlling a cooling and heating apparatus for
vehicle seats as set forth in claim 1, the method comprising: a
sensing step of sensing a temperature of air that has been sucked
by a blower fan but is not yet cooled or heated by a cooling and
heating module; a determining step of determining whether the
temperature of air sensed in the sensing step is included within a
preset temperature range; and a controlling step of controlling an
operation of the cooling and heating module so as to increase or
reduce a cooling or heating capacity of the cooling and heating
module according to a characteristic value corresponding to a state
of the sucked air when the determining step determines that there
is a temperature difference between the sensed temperature of air
and the preset temperature range.
17. The method of controlling the cooling and heating apparatus for
vehicle seats as set forth in claim 16, wherein the controlling
step is performed by controlling a voltage of a peltier element
that forms the cooling and heating module or by controlling a
rotating speed of the blower fan.
Description
CROSS-REFERENCE TO RELATED APPLICATIONS
[0001] This application claims priority to Korean Patent
Application No. 10-2012-0001051, filed on Jan. 4, 2012, the entire
contents of which are hereby incorporated by reference herein.
FIELD OF THE INVENTION
[0002] The present invention relates to in general, to a cooling
and heating apparatus for vehicle seats and a method of controlling
the apparatus and, more particularly, to a cooling and heating
apparatus for vehicle seats and a method of controlling the
apparatus, which can control the cooling or heating temperature by
sensing the temperature of air before the air is introduced into a
cooling and heating module.
BACKGROUND
[0003] A vehicle is generally provided with an HVAC (Heating,
Ventilation, and Air-conditioning) system that is an air
conditioning apparatus, in which the HVAC system can perform a
variety of air conditioning functions, such as ventilation, cooling
and heating, in the vehicle when a driver operates the system,
thereby providing a comfortable air-conditioned environment to a
driver and passengers of the vehicle. The HVAC system can be
actuated when a driver or a passenger manipulates a control switch
that is provided in a lower part of a right side of a steering
wheel. In the HVAC system, an air ventilation passage can be
controlled and an air conditioner compressor can be started by
operating an automatic temperature control unit.
[0004] Further, a vehicle seat that provides a comfortable sitting
feel to a person by a cushion is also provided with a variety of
handy functional devices. In recent years, a cooling and heating
apparatus has been installed in the vehicle seat. In an initial
stage, vehicle seat heating apparatuses are generally used in which
a heating wire is installed in a vehicle seat and provides a
comfortable warm environment to a driver who drives in a winter
season. However, such vehicle seat heating apparatuses are
problematic in that they cannot perform a cooling operation
although they can perform an efficient heating operation.
[0005] To overcome the above-mentioned problem, a thermoelement
assembly is used to selectively cool or heat the vehicle seat. In a
vehicle seat air conditioning apparatus using the thermoelement
assembly as a heat source, a functional mesh is provided in which
an air passage or an air ventilation structure that can allow air
to freely pass is formed and air generated by the thermoelement
assembly used as the heat source is supplied (blown) to the
functional mesh so that the surface of the functional vehicle seat
can be retained at a temperature desired by a person.
[0006] However, the conventional cooling and heating apparatus for
vehicle seats is problematic in that a temperature sensor is
mounted to a heat exchanger and senses the cooling or heating
temperature and controls the temperature of heat that is dissipated
from the heat exchanger based on the sensed temperature, so that
the conventional cooling and heating apparatus cannot precisely
control the temperature of air that is provided to a user.
[0007] Further, another problem of the conventional cooling and
heating apparatus for vehicle seats resides in that the temperature
of air that has just passed through the heat exchanger is different
from the temperature of air that is discharged from a vehicle seat,
so that the conventional cooling and heating apparatus cannot
precisely control the temperature of air that is provided to a
user.
SUMMARY
[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 cooling and heating
apparatus for vehicle seats and a method of controlling the
apparatus, which senses the temperature of air before the air is
introduced into a cooling and heating module and controls the
operational temperature of the cooling and heating module based on
the sensed temperature, thereby improving the satisfaction of
users.
[0009] In order to achieve the above object, according to one
aspect of the present invention, there is provided a cooling and
heating apparatus for vehicle seats, comprising: a blower fan
installed in a housing so as to forcibly blow cool or hot air to an
air supply channel that is provided in a vehicle seat; a
temperature sensor that is mounted in the housing at a location at
which the temperature sensor comes into contact with air sucked by
the blower fan and that senses a temperature of the sucked air; and
a control unit receiving a temperature signal indicative of the
temperature of the sucked air sensed by the temperature sensor and
controlling a cooling or heating temperature according to a
characteristic value that corresponds to a state of the sucked air
and is selected from characteristic values stored therein.
[0010] In one embodiment, the housing may be provided with a
cooling and heating module for performing a heat exchanging
operation with the air blown by the blower fan.
[0011] Further, it is preferred that the temperature sensor be
placed between the blower fan and the cooling and heating
module.
[0012] Further, when the cooling and heating apparatus is installed
in each of a back part and a seat part of vehicle seat, the control
unit may independently control the respective cooling and heating
apparatuses.
[0013] Further, it is preferred that the cooling and heating module
be formed using a peltier element.
[0014] Further, it is preferred that the temperature sensor be
mounted to a through hole that is formed in a predetermined portion
of the housing.
[0015] Further, it is preferred that the temperature sensor be
mounted to a mounting plate, the mounting plate being mounted to an
inner surface of the housing a bonding material.
[0016] Further, it is preferred that the mounting plate be made of
a transparent material.
[0017] Further, it is preferred that the temperature sensor be
mounted to a mounting plate, the mounting plate being provided with
a fixing hole so as to be engaged with a fixing protrusion that is
formed on an inner surface of the housing.
[0018] Further, it is preferred that a heat insulating hole be
formed through the housing on a surface on which the cooling and
heating module comes into contact with the housing.
[0019] According to another aspect of the present invention, there
is provided a method of controlling the cooling and heating
apparatus for vehicle seats, the method comprising: a sensing step
of sensing a temperature of air that has been sucked by the blower
fan but is not yet cooled or heated by the cooling and heating
module; a determining step of determining whether the temperature
of air sensed in the sensing step is included within a preset
temperature range; and a controlling step of controlling the
operation of the cooling and heating module so as to increase or
reduce the cooling or heating capacity of the cooling and heating
module according to a characteristic value corresponding to a state
of the sucked air when the determining step determines that there
is a temperature difference between the sensed temperature of air
and the preset temperature range.
[0020] In an embodiment, the controlling step may be performed by
controlling the voltage of a peltier element that forms the cooling
and heating module or by controlling the rotating speed of the
blower fan.
[0021] As described above, the cooling and heating apparatus for
vehicle seats and the method of controlling the apparatus according
to the present invention is advantageous in that the apparatus and
method can sense an air temperature that is equal to that of air
which comes into contact with a user, that is, the apparatus and
method can sense the temperature of air that is not yet cooled or
heated by the cooling and heating module, and the apparatus and
method can control the operation of the cooling and heating module
based on the sensed temperature of the air, thereby improving the
satisfaction of users.
BRIEF DESCRIPTION OF THE DRAWINGS
[0022] 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:
[0023] FIG. 1 is a view illustrating a cooling and heating
apparatus for vehicle seats according to a first embodiment of the
present invention;
[0024] FIG. 2 is a sectional view illustrating the cooling and
heating apparatus for vehicle seats according to the first
embodiment of the present invention;
[0025] FIG. 3 is a sectional view illustrating a temperature sensor
mounting part shown in FIG. 2;
[0026] FIG. 4 is a sectional view illustrating a cooling and
heating apparatus for vehicle seats according to a second
embodiment of the present invention;
[0027] FIG. 5 is a sectional view illustrating a cooling and
heating apparatus for vehicle seats according to a third embodiment
of the present invention;
[0028] FIG. 6 is a sectional view illustrating a cooling and
heating apparatus for vehicle seats according to a fourth
embodiment of the present invention; and
[0029] FIG. 7 is a flowchart of a method of controlling the cooling
and heating apparatus for vehicle seats according to a preferred
embodiment of the present invention.
DETAILED DESCRIPTION
[0030] Hereinbelow, preferred embodiments of a cooling and heating
apparatus for vehicle seats according to the present invention will
be described in detail with reference to the accompanying
drawings.
[0031] FIG. 1 is a view illustrating a cooling and heating
apparatus for vehicle seats according to a first embodiment of the
present invention, FIG. 2 is a sectional view illustrating the
cooling and heating apparatus for vehicle seats according to the
first embodiment of the present invention, and FIG. 3 is a
sectional view illustrating a temperature sensor mounting part
shown in FIG. 2.
[0032] As shown in FIGS. 1 to 3, the cooling and heating apparatus
for vehicle seats according to the first embodiment of the present
invention is installed in a vehicle seat 1. Here, the cooling and
heating apparatus 10 is installed in at least one of the back part
1a and the seat part 1b of the vehicle seat 1. When the cooling and
heating apparatus 10 is installed in only one of the back part 1a
and the seat part 1b of the vehicle seat 10, it is preferred that
the apparatus be configured in such a way that the processed air of
the apparatus can be guided from a part having the apparatus to
another part having no apparatus so that the processed air can be
discharged from both parts to a user who sits in the vehicle seat.
Further, when the cooling and heating apparatus 10 is installed in
each of the back part 1a and the seat part 1b of the vehicle seat
1, it is preferred that the cooling and heating apparatuses 10 of
respective parts be configured in such a way that the apparatuses
can independently control the cooling or heating temperatures
thereof according to the temperatures of inlet air that are sensed
by respective temperature sensors 40 which will be described later
herein, although the cooling and heating apparatuses 10 of the
respective parts may be controlled to provide the same cooling or
heating temperature.
[0033] The cooling and heating apparatus 10 includes a blower fan
11 that is installed in a housing 13 so as to forcibly guide
processed cool or hot air to an air supply channel 17 which is
provided in the vehicle seat 1, a cooling and heating module 20
that performs a heat exchange operation with air blown by the
blower fan 11, a temperature sensor 40 that is placed between the
blower fan 13 and the cooling and heating module 20, and a control
unit 50 that receives a temperature signal indicative of the
temperature of air sensed by the temperature sensor 40 and controls
the cooling or heating temperature of the cooling and heating
module 20. Here, the cooling and heating module 20 is typically
configured in the form of a heat exchanger. In the present
invention, the cooling and heating module 20 will be described as a
heat exchanger using a peltier element, as an example.
[0034] The temperature sensor 40 is inserted into the housing 13
through a through hole 14 that is formed through the housing 13,
and the sensor 40 is fixed to the housing 13 in the inserted state.
Here, the inside end having the temperature sensor 40 has a
diameter that is slightly larger than the diameter of the through
hole 14, thereby preventing the inserted temperature sensor 40 from
being undesirably removed from the through hole 14.
[0035] In the present invention, the cooling and heating module 20
is described as a heat exchanger using a peltier element, as an
example. However, it should be understood that the cooling and
heating module 20 of this invention may be configured in the form
of a variety of heat exchangers, in addition to the heat exchanger
using the peltier element.
[0036] When the cooling and heating module 20 using the peltier
element is installed in the apparatus 10, the air supply channel 17
and an air outlet channel 19 are formed in the housing 13 so as to
guide cool or hot air processed by the peltier element to the
vehicle seat 1.
[0037] Further, a heat insulating hole 18 is formed through the
housing 13 at a location at which the cooling and heating module 20
comes into contact with the housing 13. Here, the heat insulating
hole 18 functions to restrict the heat of the cooling and heating
module 20 from being transferred to the temperature sensor 40
through the housing 13.
[0038] Hereinbelow, a method of controlling the cooling and heating
apparatus for vehicle seats according to a preferred embodiment of
the present invention will be described with reference to FIG. 7.
As shown in FIG. 7, the method includes a sensing step S1 of
sensing a temperature of air that has been sucked by the blower fan
11 after the cooling and heating apparatus of a ventilative vehicle
seat was turned on, but the air is not yet cooled or heated by the
cooling and heating module 20, a determining step S2 of determining
whether the temperature of air sensed in the sensing step S1 is
included within a preset temperature range, and a controlling step
S3 of controlling the operation of the cooling and heating module
20 so as to increase or reduce the cooling or heating capacity of
the cooling and heating module 20 when the determining step S2
determines that there is a temperature difference between the
sensed temperature of air and the preset temperature range.
However, when the determining step S2 determines that there is no
temperature difference between the sensed temperature of air and
the preset temperature range, a present state maintaining step S4
is performed to maintain the present state of the apparatus. In the
method, the controlling step S3 is performed by controlling the
voltage of the peltier element that forms the cooling and heating
module 20 or by controlling the rotating speed of the blower fan
11. After the controlling step S3 is ended, the sensing step S1 is
performed again.
[0039] When the blower fan 11 of the cooling and heating apparatus
for vehicle seats starts to blow air, the blown air passes over the
temperature sensor 40 and is guided to the cooling and heating
module 20. In the above state, the temperature sensor 40 performs
the sensing step S1 of sensing the temperature of the blown air. In
the determining step S2, it is determined whether the sensed
temperature of air is included within the preset temperature range
or not. When it is determined that the sensed temperature of air is
included within the preset temperature range, the operation of the
cooling and heating module 20 and the operation of the blower fan
11 are maintained in respective present states.
[0040] However, when it is determined that the sensed temperature
of air is not included within the preset temperature range, the
controlling step S3 is performed in which the cooling or heating
capacity of the cooling and heating module 20 is increased or
reduced based on a characteristic value corresponding to the
temperature of sucked air. Here, the characteristic value means a
value that is produced by previously programming the heat
exchanging characteristics of sucked air in the control unit 50
according to properties of the sucked air. The characteristic value
is a value that is produced by a previous calculation which was
performed based on the characteristics of the cooling and heating
module 20 according to the temperature of sucked air and the
temperature difference between the sucked air and the preset
temperature range. The characteristic value is a reference value
that can be used to provide a constant cooling or heating
temperature even when the temperature of sucked air varies. In
other words, the characteristic value is the reference value that
can be used as a value for quickly and greatly increasing the
cooling or heating capacity of the cooling and heating apparatus in
proportion to the value of the temperature difference.
[0041] The air that is discharged from the vehicle seat 1 to a user
is equal to the air that is sucked by the blower fan 11 so that the
air sensed by the temperature sensor 40 is most similar to the air
discharged from the vehicle seat 1.
[0042] In the present invention, the operation of the cooling and
heating module 20 and the operation of the blower fan 11 can be
controlled in response to a variation in the air that is introduced
into the cooling and heating module 20 so that the temperature of
air can be quickly controlled.
[0043] In the cooling and heating apparatus for vehicle seats, the
temperature sensor 20 is placed at a location in front of the
cooling and heating module 20, thereby sensing the temperature of
practically sucked air. Further, the heat exchanging
characteristics of the cooling and heating module 20 are determined
according to the temperature of air sucked into the cooling and
heating module 20 and are programmed in the control unit 50 so
that, even when the temperature of sucked air quickly varies, the
control unit 50 can control the operational power of the cooling
and heating module 20 or the cooling or heating capacity of the
module 20 so as to discharge constant temperature air (to the
vehicle seat). Here, it is preferred that the control of the
capacity of the cooling and heating module 20 be realized by
controlling the voltage of the peltier element that forms the
cooling and heating module 20 or by controlling the rotating speed
of the blower fan 11.
[0044] Further, when the cooling and heating apparatus is
configured in such a way that respective cooling and heating
apparatuses are installed in the back part 1a and in the seat part
1b of the vehicle seat 1, it is preferred that the respective
apparatuses 10 be independently controlled using respective
characteristic values that are stored in the control unit 50.
[0045] Further, in a cooling and heating apparatus for vehicle
seats according to a second embodiment of the present invention,
the temperature sensor 40 is mounted to a surface of a mounting
plate 15, as shown in FIG. 4. The mounting plate 15 is mounted to
an inner surface of the housing 13 using a bonding material 15a,
such as a double-sided tape. Here, it is preferred that the
mounting plate 15 be made of a transparent material.
[0046] When the temperature sensor 40 is mounted to the housing the
above-mentioned mounting structure, work efficiency during a
process of producing the apparatus can be increased and production
cost of the apparatus can be reduced.
[0047] With the exception of the structure for mounting the
temperature sensor 40 to the housing 13, the general shape and
operation of the cooling and heating apparatus for vehicle seats
according to the second embodiment of the present invention remain
the same as in the first embodiment of the present invention.
[0048] Further, in a cooling and heating apparatus for vehicle
seats according to a third embodiment of the present invention, the
temperature sensor 40 is mounted to a surface of a mounting plate
16, as shown in FIG. 5. A fixing hole 16b is formed through the
mounting plate 16, and a fixing protrusion 16a is provided on the
inner surface of the housing 13 so as to be inserted into the
fixing hole 16b. Here, to prevent the mounting plate 16 from being
undesirably removed from the fixing protrusion 16a, the end of the
fixing protrusion 16a may be configured to have a diameter that is
greater than the inner diameter of the fixing hole 16b or the end
of the fixing protrusion 16a may be welded to the mounting plate 16
after inserting the fixing protrusion 16a into the fixing hole
16b.
[0049] With the exception of the structure for mounting the
temperature sensor 40 to the housing 13, the general shape and
operation of the cooling and heating apparatus for vehicle seats
according to the third embodiment of the present invention remain
the same as in the first embodiment of the present invention.
[0050] In a cooling and heating apparatus for vehicle seats
according to a fourth embodiment of the present invention, the
temperature sensor 40 is mounted to the housing 13 by being
inserted into a through hole 14 that is formed through the housing
13, as shown in FIG. 6. In this embodiment, the temperature sensor
40 is mounted to a base 41. Radial protrusions 42 are formed in the
base 41 by extending from the base 41 in radial directions.
Further, radial slots 14b are formed in the through hole 14 so as
to receive the respective radial protrusions 42 therein. To mount
the temperature sensor 40 to the housing, the temperature sensor 40
that is mounted to the base 41 is inserted into the through hole
14. In the above state, the radial protrusions 42 pass through the
respective radial slots 14b and are inserted into the housing 13.
When the base 41 is rotated at a predetermined angle after the
radial protrusions are completely inserted into the housing 13, the
radial protrusions 42 are caught by the edge of the through hole 14
so that the inserted state of the temperature sensor 40 inside the
housing can be maintained.
[0051] 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.
* * * * *