CN209738745U

CN209738745U - Lightweight heat pump type electric motor coach air conditioner

Info

Publication number: CN209738745U
Application number: CN201920117608.0U
Authority: CN
Inventors: 张齐明
Original assignee: Shanghai Jinchipeng Industrial Co Ltd
Current assignee: Shanghai Jinchipeng Industrial Co Ltd
Priority date: 2019-01-24
Filing date: 2019-01-24
Publication date: 2019-12-06
Anticipated expiration: 2029-01-24

Abstract

The utility model relates to a lightweight heat pump type electric passenger car air conditioner, which comprises an in-car heat exchange core body and an out-car heat exchange core body; the heat exchange core body inside the vehicle and the heat exchange core body outside the vehicle respectively comprise a plurality of micro-channel flat tubes, the micro-channel flat tubes are provided with a plurality of fins, and the micro-channel flat tubes are communicated with the collecting pipe; a fin of the heat exchange core body outside the vehicle and a fin of the heat exchange core body inside the vehicle are sleeved on the flat tubes in parallel, and condensed water guide grooves are formed between adjacent fins. The inner and outer heat exchange cores can smoothly discharge condensed water in the heat exchange process, so that the aims of reducing the weight of the electric air conditioning unit, reducing energy consumption and saving raw materials are fulfilled; the heat pump type electric air conditioning system of the electric motor coach is realized, and the functions of condensate water discharge and the heat pump type air conditioner are considered at the same time.

Description

lightweight heat pump type electric motor coach air conditioner

Technical Field

The utility model relates to an [ electric ] motor coach air conditioner particularly, is a lightweight heat pump type [ electric ] motor coach air conditioner.

Background

Along with the development of new forms of energy [ electric ] motor coach, the vehicle lightweight has important meaning to improving the continuation of the journey mileage of new forms of energy [ electric ] motor coach, and [ electric ] motor coach air conditioner is as the important part of new forms of energy [ electric ] motor coach, and its lightweight is favorable to [ electric ] motor coach energy saving and consumption reduction.

The existing cooling and heating electric air conditioner is generally in two modes, one mode is that a heat exchanger adopts a tube sheet type mode, and an indoor heat exchanger and an outdoor heat exchanger adopt copper tubes and hydrophilic aluminum foils; the other is an electric air conditioner consisting of a single-cooling electric heating PTC heater, wherein a copper pipe and a hydrophilic aluminum foil are adopted in an evaporator of the single-cooling electric air conditioner, and a micro-channel parallel flow heat exchanger is adopted in a condenser. The former heat pump type cooling and heating electric air conditioner has heavy unit weight and needs to consume more copper resources; in the latter PTC type cooling and heating electric air conditioner, the heat exchanger assembly composed of the PTC, the tube sheet evaporator and the parallel flow condenser is heavy, and the PTC consumes a large amount of power during heating. The parallel flow heat exchanger is directly applied to the electric air conditioner, and a heat pump electric air conditioning system cannot be realized due to the difficulty in draining condensed water.

Therefore, it is an object of the present invention to provide a heat pump type electric air conditioning system which can smoothly discharge condensed water during operation of a heat exchanger and can be applied to an electric bus air conditioner.

Disclosure of Invention

The utility model aims at providing a lightweight heat pump type [ electric ] motor coach air conditioner, the heat exchanger adopts light in weight's aluminium material, and can discharge the comdenstion water smoothly in heat transfer process, realizes lightening electric air conditioning unit weight, reduces energy consumption, saves the purpose of raw and other materials.

The utility model adopts the following technical proposal:

A lightweight heat pump type electric motor coach air conditioner comprises an in-car heat exchange core body 10 and an out-car heat exchange core body 21; the heat exchange core body 10 inside the vehicle and the heat exchange core body 21 outside the vehicle respectively comprise a plurality of micro-channel flat tubes 71, a plurality of fins 75 are arranged on the micro-channel flat tubes 71, and the micro-channel flat tubes 71 are communicated with a collecting pipe 73; the fins 75 of the vehicle exterior heat exchange core body 21 and the vehicle interior heat exchange core body 10 are sleeved on the flat tubes in parallel, and a condensed water diversion groove 76 is arranged between the adjacent fins 75.

Further, the device also comprises an axial flow fan 20 and a centrifugal fan 13; the axial flow fan 20 is fixed at the lower part of the heat exchange core body 21 outside the vehicle, and the centrifugal fan 13 is fixed beside the heat exchange core body 10 inside the vehicle.

Further, the heat exchanger further comprises a bidirectional expansion valve 35, wherein the bidirectional expansion valve 35 is arranged between the inner heat exchange core body 10 and the outer heat exchange core body 21.

Further, the gas-liquid separator further includes an electric compressor 30 and a gas-liquid separator 33 connected to the electric compressor 30.

Furthermore, the heat exchange core body 21 outside the vehicle and the heat exchange core body 10 inside the vehicle are divided into a plurality of flows, each flow is composed of a plurality of micro-channel flat tubes 71, the refrigerant 38 is collected to a header 73 from the micro-channel flat tubes 71, and a partition plate 91 with a hole is additionally arranged at the header.

Furthermore, the heat exchange core body 21 outside the vehicle is a single body and is horizontally arranged, and the air inlet of the heat exchanger outside the vehicle is three-surface air inlet.

Furthermore, the heat exchange core body 10 inside the vehicle and the heat exchange core body 21 outside the vehicle are both made of aluminum materials; the fins 75 are hydrophilic aluminum foils; the fins 75 are hydrophilic aluminum foil.

The beneficial effects of the utility model reside in that:

1) the inner and outer heat exchange cores can smoothly discharge the condensed water in the heat exchange process, thereby achieving the purposes of reducing the weight of the electric air conditioning unit, reducing the energy consumption and saving raw materials.

2) The heat exchange core body outside the vehicle and the heat exchange core body inside the vehicle are both made of aluminum, so that the weight is further reduced.

3) The light heat exchanger system is applied to the air conditioner of the electric motor coach, meanwhile, the heat pump type electric air conditioning system of the electric motor coach is realized, and the functions of condensate water discharge and the heat pump type air conditioner are considered.

Drawings

Fig. 1 is a bottom view of the light heat pump type air conditioner for electric motor coach of the present invention.

Fig. 2 is a view of the portion of the interior heat exchanger of fig. 1.

Fig. 3 is a top view of fig. 2.

Fig. 4 is a partially enlarged view of fig. 2.

Fig. 5 is a view of the portion of the outboard heat exchanger of fig. 1.

Fig. 6 is a top view of fig. 5.

Detailed Description

The invention is further described with reference to the following figures and specific examples.

Referring to fig. 1 to 6, the heat pump electric motor coach air conditioner 80 has a cooling mode and a heating mode according to different ambient temperatures. When the heat pump electric motor coach air conditioner 80 is in a cooling mode, the refrigerant 38 is discharged from the electric compressor 30, flows through the check valve 31 to the four-way reversing valve 32, passes through the four-way reversing valve 32, and is divided into two paths through the joint 96 and the joint 98 to reach the flat tube 71 of the heat exchange core body 21 outside the vehicle. The flat tubes 71 and the fins 75 of the vehicle exterior heat exchanger core 21 are made of aluminum materials with light weight, the fins 75 are sleeved on the flat tubes 71 one by one and brazed together, the vehicle exterior heat exchanger core 21 is divided into two paths, each path is made of a plurality of flows, each flow is isolated by a solid partition plate 72, and each flow is provided with a plurality of flat tubes 71. The outlet header 73 of each first flow path is provided with a plurality of perforated partition boards 91 for regulating the flow rate of the refrigerant, the axial flow fan 20 enables air outside the vehicle to enter the surfaces of fins 75 of the heat exchanger core 21 outside the vehicle from two side surfaces and end parts to exchange heat with the high-temperature refrigerant 38 in the flat tubes 71 and discharge hot air outside the vehicle, two paths of cooled liquid refrigerant 38 are gathered into one path in the outlet header 73, flow to the two-way drying filter 38 through the joint 97 and are throttled by the two-way expansion valve 35 to become low-temperature liquid refrigerant, and the low-temperature liquid refrigerant is distributed to the two groups of heat exchanger cores 10 inside the vehicle through the liquid distribution head 15. The flat tube 71 and the fins 75 of the vehicle interior heat exchanger core 10 are made of aluminum materials with light weight, the fins 75 are sleeved on the flat tube 71 one by one and brazed together, the vehicle interior heat exchanger core 10 is divided into two paths, each path is made of a plurality of flows, each flow is provided with a plurality of flat tubes 71, a plurality of flow-adjusting perforated partition plates 91 are arranged at the outlet header 73 of each path of the first flow, the low-temperature liquid refrigerant 38 flowing in the vehicle interior heat exchanger core flat tube 10 absorbs heat of hot air in the vehicle, and the cooled air is sent into the vehicle by the centrifugal fan 13, so that the vehicle interior cooling is realized. Meanwhile, when the in-vehicle hot air passes through the in-vehicle heat exchange core 10, condensate water is generated on the surface of the in-vehicle heat exchange core 10, hydrophilic materials for preventing condensate water drops are coated on the surfaces of the fins 75 and the flat tubes 71, one fin 75 is sleeved on the flat tubes 71, the width of each fin 75 exceeds the corresponding flat tube 71 at the air outlet end, the condensate water smoothly flows to the base along the surfaces of the fins under the action of gravity and is discharged out of the vehicle through the drain pipe 61, and the problem that the heat exchange effect is influenced due to the fact that the condensate water cannot be collected in the in-vehicle heat exchange core 10 is prevented. The refrigerant 38 that has absorbed heat and has changed into a gaseous state passes through the four-way selector valve 32, is separated in the vapor-liquid separator 33, enters the electric compressor 30, is compressed by the electric compressor 30, and then undergoes the next cycle. Thus, the refrigeration is continuously performed.

When the heat pump electric motor coach air conditioner 80 is in a heating mode, the refrigerant 38 is discharged from the electric compressor 30, flows through the one-way valve 31 to the four-way reversing valve 32, and is divided into two paths to reach the in-vehicle heat exchange core 10 through the four-way reversing valve 32, the in-vehicle heat exchange core 10 made of aluminum materials is divided into two paths, each path is composed of a plurality of flow paths, each flow path is provided with a plurality of flat pipes 71, a plurality of flow-adjusting partition plates 91 with holes are arranged at the inlet header 73 of the last flow path, the high-temperature gaseous refrigerant 38 flowing in the flat pipes 71 of the in-vehicle heat exchange core 10 transfers heat to the air in the vehicle flowing through, and the heated air is sent into the vehicle by the centrifugal fan 13, so that the in. The two condensed refrigerants 38 are gathered together, throttled by the two-way expansion valve 35, then enter the external heat exchange core 21 made of aluminum materials through the two-way drying filter 36 and reach the joint 97, are divided into two paths, each path is made of a plurality of flat tubes 71, the refrigerants 38 after heat exchange of the external heat exchange core 21 flow out of the joint 96 and the joint 98 respectively and converge together, then enter the four-way reversing valve 32, enter the vapor-liquid separator 33 for separation, then are compressed by the electric compressor 30, and then enter the next heating cycle. Heating is carried out repeatedly. Meanwhile, the air outside the vehicle enters the heat exchange core body 21 outside the vehicle from two sides and the end head, the air after heat absorption is discharged to the outside by the axial flow fan 20 after heat exchange, the air flows across the outer surface of the flat tube 71 when the air outside the vehicle flows through the flat tube 71, condensed water can be generated when the fins 75 are arranged, in order to prevent water drops, the outer surface of the flat tube 71 and the outer surface of the fins 75 are coated with hydrophilic materials, in order to enable the condensed water to be smoothly discharged, one fin 75 is sleeved on the flat tube 71, the outdoor heat exchange core body 21 is horizontally arranged, the condensed water on the fins 75 is discharged downwards along the fins 75 under the action of gravity, the phenomenon that the condensed water cannot be discharged is avoided, the outdoor heat exchange effect is increasingly poor, even freezing is caused.

the above are preferred embodiments of the present invention, and those skilled in the art can make various changes or improvements on the above embodiments without departing from the general concept of the present invention, and these changes or improvements should fall within the scope of the present invention.

Claims

1. The utility model provides a lightweight heat pump type [ electric ] motor coach air conditioner which characterized in that:

Comprises an in-vehicle heat exchange core body (10) and an out-vehicle heat exchange core body (21);

The heat exchange core body (10) inside the vehicle and the heat exchange core body (21) outside the vehicle respectively comprise a plurality of micro-channel flat tubes (71), a plurality of fins (75) are arranged on the micro-channel flat tubes (71), and the micro-channel flat tubes (71) are communicated with a collecting pipe (73);

Fins (75) of the heat exchange core body (21) outside the vehicle and fins (75) of the heat exchange core body (10) inside the vehicle are sleeved on the flat tubes in parallel, and condensed water guide grooves (76) are arranged between the adjacent fins (75).

2. The light-weight heat pump type electric motor coach air conditioner of claim 1, wherein: the device also comprises an axial flow fan (20) and a centrifugal fan (13); the axial flow fan (20) is fixed at the lower part of the heat exchange core body (21) outside the vehicle, and the centrifugal fan (13) is fixed beside the heat exchange core body (10) inside the vehicle.

3. The light-weight heat pump type electric motor coach air conditioner of claim 1, wherein: the automobile heat exchanger further comprises a two-way expansion valve (35), wherein the two-way expansion valve (35) is arranged between the inner heat exchange core body (10) and the outer heat exchange core body (21).

4. the light-weight heat pump type electric motor coach air conditioner of claim 3, wherein: the device also comprises an electric compressor (30) and a gas-liquid separator (33) connected with the electric compressor (30).

5. The light-weight heat pump type electric motor coach air conditioner of claim 3, wherein: the heat exchange core body (21) outside the vehicle and the heat exchange core body (10) inside the vehicle are divided into a plurality of flows, each flow is composed of a plurality of micro-channel flat tubes (71), the refrigerant (38) is collected to a collecting pipe (73) from the micro-channel flat tubes (71), and a partition plate (91) with a hole is additionally arranged at the collecting pipe.

6. the light-weight heat pump type electric motor coach air conditioner of claim 3, wherein: the heat exchange core body (21) outside the vehicle is a piece and is horizontally arranged, and the air inlet of the heat exchanger outside the vehicle is three-side air inlet.

7. The light-weight heat pump type electric motor coach air conditioner of claim 3, wherein: the heat exchange core body (10) inside the vehicle and the heat exchange core body (21) outside the vehicle are both made of aluminum materials; the fins (75) are hydrophilic aluminum foil.