U.S. patent application number 15/325548 was filed with the patent office on 2017-06-01 for air conditioning unit of track vehicle mounted under vehicle.
This patent application is currently assigned to CRRC QINGDAO SIFANG CO., LTD.. The applicant listed for this patent is CRRC QINGDAO SIFANG CO., LTD.. Invention is credited to Lele GAO, Peng LI, Jianying LIANG, Jingkai WANG, Zongchang WANG, Jianjun XIA, Jin YOU, Bo YUAN, Xingwang ZANG, Xinxi ZHOU.
Application Number | 20170151961 15/325548 |
Document ID | / |
Family ID | 56106664 |
Filed Date | 2017-06-01 |
United States Patent
Application |
20170151961 |
Kind Code |
A1 |
WANG; Zongchang ; et
al. |
June 1, 2017 |
AIR CONDITIONING UNIT OF TRACK VEHICLE MOUNTED UNDER VEHICLE
Abstract
An underfloor air conditioning unit of a track vehicle is a
unitary air conditioning unit and includes a housing, an inside of
the housing being divided into an indoor side and an outdoor side,
and a condenser, a condenser fan, and a compressor are mounted in
the outdoor side, wherein two side walls, corresponding to air
intakes of skirt plates at two sides of an equipment compartment,
of the housing are each provided with a condensing air inlet, and a
bottom wall of the housing is provided with a condensing air
outlet, the condenser fan is arranged close to a position of the
condensing air outlet of the bottom wall, the number of the
condenser is two, and the two condensers are arranged respectively
close to the condensing air inlets at the two sides.
Inventors: |
WANG; Zongchang; (Qingdao,
Shandong, CN) ; ZHOU; Xinxi; (Qingdao, Shandong,
CN) ; ZANG; Xingwang; (Qingdao, Shandong, CN)
; XIA; Jianjun; (Qingdao, Shandong, CN) ; LI;
Peng; (Qingdao, Shandong, CN) ; WANG; Jingkai;
(Qingdao, Shandong, CN) ; GAO; Lele; (Qingdao,
Shandong, CN) ; YOU; Jin; (Qingdao, Shandong, CN)
; YUAN; Bo; (Qingdao, Shandong, CN) ; LIANG;
Jianying; (Qingdao, Shandong, CN) |
|
Applicant: |
Name |
City |
State |
Country |
Type |
CRRC QINGDAO SIFANG CO., LTD. |
Qingdao, Shandong |
|
CN |
|
|
Assignee: |
CRRC QINGDAO SIFANG CO.,
LTD.
Qingdao, Shandong
CN
|
Family ID: |
56106664 |
Appl. No.: |
15/325548 |
Filed: |
November 10, 2015 |
PCT Filed: |
November 10, 2015 |
PCT NO: |
PCT/CN2015/094186 |
371 Date: |
January 11, 2017 |
Current U.S.
Class: |
1/1 |
Current CPC
Class: |
B61D 27/0018
20130101 |
International
Class: |
B61D 27/00 20060101
B61D027/00 |
Foreign Application Data
Date |
Code |
Application Number |
Dec 8, 2014 |
CN |
201410743312.1 |
Dec 8, 2014 |
CN |
201420765292.3 |
Claims
1. An underfloor air conditioning unit for a railway vehicle, being
a unitary air conditioning unit and comprising a housing, an inside
of the housing being divided into an indoor side and an outdoor
side, and a condenser, a condenser fan, and a compressor being
mounted in the outdoor side, wherein two side walls, corresponding
to air intakes of skirt plates at two sides of an equipment
compartment, of the housing are each provided with a condensing air
inlet, and a bottom wall of the housing is provided with a
condensing air outlet, the condenser fan is arranged close to a
position of the condensing air outlet of the bottom wall, the
number of the condenser is two, and the two condensers are arranged
respectively close to the condensing air inlets at the two
sides.
2. The underfloor air conditioning unit for the railway vehicle
according to claim 1, wherein the housing is extended in a width
direction of a vehicle body, and the side walls of two sides of the
housing are arranged respectively closely adjacent to the air
intakes of the skirt plates at the two sides.
3. The underfloor air conditioning unit for the railway vehicle
according to claim 2, wherein the number of the compressor is two,
and the two compressors are mounted respectively in spaces between
the condensers at two sides and respective side walls of the
housing.
4. The underfloor air conditioning unit for the railway vehicle
according to claim 2, wherein the number of the condenser fan is
two, and the two condenser fans are arranged side by side between
the two condensers along the width direction of the vehicle
body.
5. The underfloor air conditioning unit for the railway vehicle
according to claim 1, wherein an air passage enclosed by a
connecting plate is arranged between the side wall at each of two
sides of the housing and the air intake of the respective skirt
plate, and the air intake of the respective skirt plate is in
communication with the respective condensing air inlet via the air
passage.
6. The underfloor air conditioning unit for the railway vehicle
according to claim 1, wherein a first filtering device is provided
at each of the air intakes of the skirt plates.
7. The underfloor air conditioning unit for the railway vehicle
according to claim 1, wherein a second filtering device is provided
at each of the condensing air inlets.
8. The underfloor air conditioning unit for the railway vehicle
according to claim 1, wherein the bottom wall of the housing of the
air conditioning unit functions as a base plate of the equipment
compartment, and the bottom wall of the housing is fixedly
connected to a surrounding base plate of the equipment
compartment.
9. The underfloor air conditioning unit for the railway vehicle
according to claim 1, wherein the condensers are placed
perpendicular to the bottom wall of the housing, or are placed to
be inclined towards a center line of a vehicle body.
Description
[0001] The present application claims the benefit of priorities to
Chinese patent application No. 201410743312.1, titled "UNDERFLOOR
AIR CONDITIONING UNIT FOR RAILWAY VEHICLE", filed with the Chinese
State Intellectual Property Office on Dec. 8, 2014, and Chinese
patent application No. 201420765292.3, titled "UNDERFLOOR AIR
CONDITIONING UNIT FOR RAILWAY VEHICLE", filed with the Chinese
State Intellectual Property Office on Dec. 8, 2014, the entire
disclosures of which are incorporated herein by reference.
TECHNICAL FIELD
[0002] The present application relates to an air conditioning unit,
and particularly to an underfloor air conditioning unit for a
railway vehicle, and pertains to the technical field of railway
vehicle air conditioners.
BACKGROUND
[0003] Currently, mounting manners of vehicle air conditioning
units are mainly classified into mounting on a roof of a vehicle
and mounting beneath the vehicle. By mounting an air conditioner
beneath the vehicle, the center of gravity of the vehicle can be
lowered, which allows the vehicle to have a good stability when
running at a high speed. In the case that the air conditioner is
mounted on the roof of the vehicle, it has a large distance from a
rail surface (about 3.3 m), the temperature of the condensation
inlet air is approximate to the atmosphere temperature, and the
atmosphere temperature does not exceed 45 Celsius degrees in the
hot season, therefore, in the hot season, the condensation effect
of the air conditioner is relatively good, and a large
refrigerating output can be achieved, and the refrigerating
capacity can be ensured. However, in the case that the air
conditioner is mounted beneath the railway vehicle, not only the
mounting of the air conditioner may be limited by the mounting
space for the underfloor equipments, but also, the air conditioner
has a small distance from the rail surface (about 0.5 m). In the
hot season, due to the effect of heat radiation from ground surface
and heat dissipation of the equipments in an equipment compartment,
the temperature of the condensing air of the air conditioner is
higher than the atmosphere temperature by about 10 Celsius degrees,
and the condensing temperature may reach to 55 Celsius degrees,
which results in that the air conditioner cannot exert its full
refrigerating capacity in the hot season due to the inferior
condensing effect, and has an inferior refrigerating effect, and
the temperature in the vehicle is undesirably high.
[0004] A conventional underfloor air conditioning unit, as
disclosed in Chinese Patent No. 200820133582.0 titled "AIR
CONDITIONING DEVICE FOR HIGH-SPEED RAILWAY VEHICLE", includes a
housing, and the inside of the housing is divided into an indoor
side and an outdoor side. A condenser, a compressor, and a
condenser fan are installed in the outdoor side, and two condenser
fans are installed at one side in the housing, and a side wall of
the housing is provided with a condensing air inlet. The condenser
is arranged at another side in the housing, and a condensing air
outlet is provided in a side wall of the housing at a position
corresponding to the condenser. The flowing direction of the
condensing air of the air conditioner is sucking in air from a
skirt plate at one side and the equipment compartment, and
discharging the air via a skirt plate at another side after
absorbing heat of the condenser. Under the influence of the
arrangement of the equipments in the underfloor equipment
compartment, the air conditioning unit of this structure has a
condensing air output smaller than a designed value after the air
conditioner is mounted, and the condensing effect obtained by the
arrangement in which air is fed from a single side and discharged
from a single side is inferior, the condensing air output cannot
meet the refrigerating requirement for the air conditioner in the
hot season, and the riding comfort in the vehicle is adversely
affected in a certain degree. Furthermore, the conventional unitary
air conditioning unit is arranged along a length direction of a
vehicle body, and a space needs to be reserved between each of two
sides of the air conditioner and a respective skirt plate for air
to flow through, which takes a large space under the vehicle.
SUMMARY
[0005] A main object of the present application is to address the
above issues and deficiencies, to provide an underfloor air
conditioning unit for a railway vehicle which can increase a
condensing air intake volume, and has an improved refrigerating
efficiency under a high temperature environment.
[0006] To achieve the above objects, the following technical
solutions are provided according to the present application.
[0007] An underfloor air conditioning unit for a railway vehicle is
a unitary air conditioning unit and includes a housing, an inside
of the housing is divided into an indoor side and an outdoor side,
and a condenser, a condenser fan, and a compressor are mounted in
the outdoor side, wherein two side walls, corresponding to air
intakes of skirt plates at two sides of an equipment compartment,
of the housing are each provided with a condensing air inlet, and a
bottom wall of the housing is provided with a condensing air
outlet, the condenser fan is arranged close to a position of the
condensing air outlet of the bottom wall, the number of the
condenser is two, and the two condensers are arranged respectively
close to the condensing air inlets at the two sides.
[0008] Further, the housing is extended in a width direction of a
vehicle body, and the side walls of two sides of the housing are
arranged respectively closely adjacent to the air intakes of the
skirt plates at the two sides.
[0009] Further, the number of the compressor is two, and the two
compressors are mounted respectively in spaces between the
condensers at two sides and respective side walls of the
housing.
[0010] Further, the number of the condenser fan is two, and the two
condenser fans are arranged side by side between the two condensers
along the width direction of the vehicle body.
[0011] Further, an air passage enclosed by a connecting plate is
arranged between the side wall at each of two sides of the housing
and the air intake of the respective skirt plate, and the air
intake of the respective skirt plate is in communication with the
respective condensing air inlet via the air passage.
[0012] Further, a first filtering device is provided at each of the
air intakes of the skirt plates.
[0013] Further, a second filtering device is provided at each of
the condensing air inlets.
[0014] Further, the bottom wall of the housing of the air
conditioning unit functions as a base plate of the equipment
compartment, and the bottom wall of the housing is fixedly
connected to a surrounding base plate of the equipment
compartment.
[0015] Further, the condensers are placed perpendicular to the
bottom wall of the housing, or are placed to be inclined towards a
center line of a vehicle body.
[0016] In summary, compared with the conventional technology, the
underfloor air conditioning unit for the railway vehicle according
to the present application has the following advantages.
[0017] (1) The number of the condenser is increased from one to
two, and the condenser fan is mounted at the bottom surface instead
of being mounted at a lateral side, and the air feeding and
discharging direction of the condensing air of the air conditioner
is changed, the condensing air inlets are arranged at two sides of
the skirt plates, the condensing outgoing direction is arranged at
the bottom of the air conditioning unit, the condensing air intake
area of the air conditioner is doubled, thus increasing the
condensing air output of the air conditioner, and improving the
refrigerating effect of the air conditioner in a high temperature,
thereby, the riding comfort of the vehicle in a long time operation
in a high temperature environment is improved.
[0018] (2) In the present application, air is fed from two sides of
the skirt plates, and the air conditioning unit has an increased
length in the width direction of the vehicle body, and is in
cooperation with the skirt plates at the two sides, to reduce the
length of the air conditioning unit in the length direction of the
vehicle body. Therefore, the structure and mounting manners of the
air conditioning unit in the conventional technology are changed,
which can not only ensure the intake volume, but also save the
space under the vehicle in a large extent.
[0019] (3) In the present application, the condensing air outlet is
arranged at the bottom of the air conditioning unit to discharge
air downward, to prevent the condensing air of the air conditioning
unit from being discharged into the equipment compartment in which
case a temperature in the equipment compartment may be increased
and thus adversely affecting the normal operation of other
equipments.
BRIEF DESCRIPTION OF THE DRAWINGS
[0020] For more clearly illustrating embodiments of the present
application or the technical solutions in the conventional
technology, drawings referred to describe the embodiments or the
conventional technology will be briefly described hereinafter.
Apparently, the drawings in the following description are only some
examples of the present application, and for the person skilled in
the art, other drawings may be obtained based on these drawings
without any creative efforts.
[0021] FIG. 1 is a schematic view showing the structure of a first
embodiment according to the present application;
[0022] FIG. 2 is a schematic view showing the air feeding and air
discharging manner of a condensing air according to the present
application;
[0023] FIG. 3 is a schematic view showing the structure of a second
embodiment of the present application; and
[0024] FIG. 4 is a view of FIG. 3 viewed in direction A.
[0025] Reference numerals in FIGS. 1 to 4:
TABLE-US-00001 1 equipment compartment, 2 housing, 3 indoor side, 4
outdoor side, 5 evaporator, 6 evaporating fan, 7 condenser, 8
condenser fan, 9 compressor, 10 air supply opening, 11 return air
opening, 12 condensing air inlet, 13 condensing air outlet, 14
skirt plate, 15 air intake.
DETAILED DESCRIPTION
[0026] To make the objects, technical solutions and advantages of
embodiments of the present application clearer, the technical
solutions according to the embodiments of the present application
will be described clearly and completely as follows in conjunction
with the drawings in the embodiments of the present application. It
is apparent that the described embodiments are a part of the
embodiments according to the present application rather than all
the embodiments. Any other embodiments obtained by those skilled in
the art based on the embodiments in the present application without
any creative works fall within the scope of protection of the
present application.
[0027] The present application is further described in detail
hereinafter in conjunction with drawings and embodiments.
First Embodiment
[0028] As shown in FIG. 1, an underfloor air conditioning unit for
a railway vehicle according to the present application is a unitary
air conditioning unit, and is integrally mounted in an equipment
compartment 1 beneath the railway vehicle. The air conditioning
unit includes a housing 2, and the inside of the housing 2 is
divided into an indoor side 3 and an outdoor side 4. An evaporator
5 and an evaporating fan 6 and the like are mounted in the indoor
side 3, and a condenser 7, a condenser fan 8 and a compressor 9 are
mounted in the outdoor side 4. An air supply opening 10 and a
return air opening 11 are provided in the housing at the indoor
side 3, and a condensing air inlet 12 and a condensing air outlet
13 are provided in the housing at the outdoor side 4.
[0029] To achieve the ventilation and cooling of the equipments in
the equipment compartment 1, each skirt plate 14 is provided with
an air intake 15, and a first filtering device is provided at the
air intake 15. The first filtering device may be embodied as a
filtering mesh or a mechanical filter, and the like, to effectively
filter sand dust and the like in the environment, and to perform a
coarse filtration to the condensing air, thereby ensuring the
normal operation of the air conditioning unit. In this embodiment,
corresponding to the air intakes 15 in the skirt plates 14 at two
sides, side walls at two sides of the housing 2 are each provided
with a condensing air inlet 12. For further filtering fine sand
dust, a second filtering device may be further provided at the
condensing air inlets 12, and the second filtering device may be
embodied as nonwoven fabrics or stainless steel mesh, and the like,
to secondarily filter the air entered into the condenser 7 of the
air conditioning unit. A condensing air outlet 13 is provided in a
bottom wall of the housing 2, to achieve an air feeding and air
discharging manner of the condensing air in which air is fed from
the two sides of the housing 2 and is discharged from the bottom of
the housing 2. In this embodiment, a base plate for the equipment
compartment 1 is not separately arranged beneath the air
conditioning unit, and the bottom wall of the housing 2 functions
as the base plate of the equipment compartment 1, thus, the
condensing outgoing air of the air conditioning unit is directly
discharged outside of the vehicle, and is prevented from being
discharged into the equipment compartment 1 which may cause a
temperature rising in the equipment compartment, and adversely
affect normal operation of other equipments. The bottom wall of the
housing 2 and a surrounding base plate of the equipment compartment
1 are fixedly connected, to ensure the tightness of the equipment
compartment 1, prevent the sand dust and the like from entering
into the equipment compartment 1, and a sealing treatment may be
performed on the joint of the bottom wall of the housing 2 and the
surrounding base plate of the equipment compartment 1.
[0030] Two condensers 7, two condenser fans 8 and two compressors 9
are provided in the outdoor side 4. The two condensers 7 are
arranged respectively close to the condensing air inlets 12 at the
two sides. The two condensers 7 may be vertically fixed to the
bottom wall of the housing 2 by a mounting structure. In this
embodiment, for increasing the heat exchanging area of the
condensers, the condensers 7 are installed to be inclined towards a
center line of the vehicle body. The two condenser fans 8 are
arranged close to the position of the condensing air outlet 13 in
the bottom wall, and two condensing air outlets 13 are
correspondingly provided. The two condenser fans 8 are mounted side
by side along a length direction of the vehicle body, and the two
condensers 7 are arranged respectively at two sides of the two
condenser fans 8, and the two compressors 9 are mounted in a space
between the condenser 7 at one side and a side wall, corresponding
to this condenser 7, of the housing 2.
[0031] As shown in FIG. 2, the direction indicated by the arrows in
the drawing is an air flow direction. When the air conditioning
unit is in operation, under the effect of the two condenser fans 8,
air is fed from the air intakes 15 of the skirt plates 14 at the
two sides of the equipment compartment 1, and enters into the
outdoor side 2 via the condensing air inlets 12 in the side walls
of two sides of the air conditioning unit, and respectively
exchanges heat with a high temperature coolant in the two
condensers 7, and then the air with a high temperature after
exchanging heat is discharged outside of the vehicle from the
condensing air outlets 13 in the bottom wall of the housing 2.
[0032] In this embodiment, the number of the condenser 7 is
increased to two from one in the conventional technology, and the
condenser fan 8 is mounted at the bottom surface of the outdoor
side 4 instead of being mounted at a lateral side of the outdoor
side 4, and air is fed from two sides simultaneously, the
condensing air intake area of the air conditioning unit is doubled
as compared with the conventional technology, thus greatly
increasing the condensing air output of the air conditioning unit,
and improving the refrigerating effect of the air conditioner in a
high temperature, thereby, the riding comfort of the vehicle in a
long time operation in a high temperature environment is improved
greatly.
Second Embodiment
[0033] Unlike the first embodiment, in this embodiment, as shown in
FIGS. 3 and 4, the direction indicated by the arrows in the drawing
is the air flow direction. In this embodiment, the housing 2
extends in a width direction of the vehicle body, and side walls of
two sides of the housing 2 are arranged respectively closely
adjacent to the air intakes 15 of the skirt plates 14 at the two
sides. The length of the housing 2 in the width direction of the
vehicle body is greater than its length in the length direction of
the vehicle body, that is, the length of the housing 2 in the width
direction of the vehicle body is increased, and the length of the
housing 2 in the length direction of the vehicle body is shortened.
Since condensing air inlets 12 in the two side walls of the housing
2 are respectively closely adjacent to the air intakes 15 of the
skirt plates 14, most of the air entered from the air intakes 15
with a low temperature enters into the housing 2 of the air
conditioning unit, and participates in the heat exchanging with the
condensers 7, thus improving the heat exchanging efficiency of the
air conditioning unit.
[0034] In this embodiment, since the length of the housing 1 in the
width direction of the vehicle body is increased, two compressors 9
are respectively mounted into spaces between the condensers 7 at
two sides and the respective side walls of the housing 2, the two
condenser fans 8 are arranged side by side between the two
condensers 7 along the width direction of the vehicle body, and the
two condensers 7 are arranged to be inclined towards the center
line of the vehicle body in a vertical direction and a horizontal
direction, thus further increasing the heat exchanging area of the
condensers 7. The evaporator 5 in the indoor side 3 may also be
lengthened correspondingly, which may further increase the
evaporation heat exchanging area. Two of the evaporating fan 6 may
be provided to further increase the indoor ventilation quantity.
The increase of the areas of the condenser and the evaporator, the
increase of the indoor and outdoor ventilation quantities all
greatly improve the refrigerating capacity of the air conditioning
unit, and meets the refrigerating requirement for the air
conditioner in the hot season, and ensures the riding comfort for
passengers in a high temperature operation environment.
[0035] In this embodiment, the air conditioning unit has an
increased length in the width direction of the vehicle body, and is
in cooperation with the skirt plates 14 at the two sides, and the
length of the air conditioning unit is shortened in the length
direction of the vehicle body. Therefore, the structure and
mounting manners of the air conditioning unit in the conventional
technology are changed, and it is no longer required to reserve
large spaces at two sides of the air conditioning unit for air to
flow through, and the space of the vehicle body in the length
direction is saved, which saves the space under the vehicle in a
large extent.
Third Embodiment
[0036] Unlike the second embodiment, in this embodiment, side walls
of two sides of the housing 2 are each of an open structure, and
the whole side walls function as condensing air inlets 12
respectively. The side walls of two sides of the housing 2 are
connected to respective skirt plates 14 by respective connecting
plates (not shown). A space enclosed by the connecting plate forms
an air intake passage, and each of the condensing air inlets 12 is
in communication with the air intake 15 of the respective skirt
plate 14 via the air intake passage, thus an individual space is
formed between the condensing air inlet 12 and the air intake 15 of
the respective skirt plate 14, to allow the air entered from the
air intake 15 with a low temperature to wholly enter into the
housing 2 of the air conditioning unit, to participate in the heat
exchanging with the condenser 7, thereby further improving the heat
exchanging efficiency of the air conditioning unit.
[0037] Based on the above description, similar technical solutions
can be made in conjunction with the technical solutions shown in
the drawings. However, any simple changes, equivalent variations
and modifications made to the above embodiments according to the
technical content of the present application, without departing
from the content of the technical solution of the present
application, are deemed to fall in the scope of the technical
solution of the present application.
* * * * *