Air conditioning unit for double-layer open-topped new energy bus

Abstract

An air conditioning unit for a double-layer open new energy bus comprises a condensing unit assembly, an evaporator assembly and an electric control integration set, the evaporator assembly comprises a front end evaporator which is arranged in a vehicle machine and located at a driver's seat, and the condensing unit assembly and the electric control integration set are both arranged at the rear end of the vehicle machine. The condensing unit assembly and the electric control integration group are arranged in the integration box; and the front-end evaporator is connected with the condensing unit assembly and the electric control integration group in the integration box through a refrigerant pipeline. According to the utility model, the front-end evaporator is additionally arranged, and the electric control integration group is arranged in the integration box, so that the device has the advantages of high integration level and high heat / cold transfer efficiency.

Description

Technical Field

[0001] The utility model belongs to the technical field of automobile air-conditioning, and in particular relates to an air-conditioning unit for a double-decker convertible new energy bus. Background Art

[0002] The principle of bus refrigeration is to use a compressor to compress the refrigerant, which turns it into a liquid state and releases a large amount of heat, causing its temperature to rise significantly. At this time, the refrigerant transfers heat to the outside world through the heat-conducting surface, and the large amount of heat released by the refrigerant is transferred to the outside world. Then, by reducing the pressure, the refrigerant is vaporized, and the refrigerant absorbs a large amount of heat when it vaporizes. At this time, the refrigerant contacts the air inside the car through another heat-conducting surface, absorbs a large amount of heat inside the car, and then blows the temperature-regulated air into the car through the fan. When heating is needed, the above process is controlled to transfer a large amount of heat outside the car to the car.

[0003] In the prior art, an integrated back-mounted air conditioner is generally used to complete the cooling and heating work, but the electronic control part and the unit part are often distributed in a split type, occupying the space of the whole vehicle. In order to solve the above problems, the document with the authorization announcement number CN207128551U discloses a pure electric back-mounted air conditioning system, including an upper structure and a lower structure, the upper structure is an evaporation core layer, containing an evaporation fan and an evaporation core, the evaporation fan is provided with an upper air outlet and a side air outlet, the lower structure is a condensation core layer, containing a condensation core, a compressor, a gas-liquid separator and a control power supply system, the condensation core is installed on the rear side of the lower structure, the lower structure is divided into left and right parts, any part of the lower structure contains a compressor and a gas-liquid separator, the compressor is arranged on the outside of the gas-liquid separator, the other part of the lower structure is a control power supply system, containing a power module and an electric control box, the electric control box is arranged on the outside of the power module, and the evaporation core layer and the condensation core layer are connected through a pipeline assembly.

[0004] Although this device solves the problem of space occupation, the following problems still exist: first, the space inside the bus is long, and the back-mounted air conditioner has difficulty delivering cold or hot air to the front of the car; second, the control power system itself generates a lot of heat, and installing it near structures such as compressors can easily affect the working efficiency of equipment such as compressors. Utility Model Content

[0005] In view of the above-mentioned problems, the purpose of the utility model is to provide an air-conditioning unit for a double-decker convertible new energy bus. By adding a front-end evaporator and installing the electronic control integrated group in an integrated box, the device has the advantages of high integration and high heat / cooling efficiency.

[0006] In order to achieve the above purpose, the technical solution of the utility model is as follows:

[0007] An air conditioning unit for a double-decker convertible new energy bus comprises a condensing unit assembly, an evaporator assembly and an electronic control integrated group, wherein the evaporator assembly comprises a front evaporator arranged in the vehicle and located at the driver's seat, the condensing unit assembly and the electronic control integrated group are both arranged at the rear end of the vehicle, and the condensing unit assembly and the electronic control integrated group are both arranged in an integrated box; the front evaporator is connected to the condensing unit assembly and the electronic control integrated group in the integrated box through a refrigerant pipeline.

[0008] As a further preferred embodiment of the present invention, the integrated box includes a first installation cavity and a second installation cavity for installing the electronic control integrated group and the condensing unit assembly respectively; the refrigerant pipeline includes a first refrigerant pipe connected to the front end evaporator, a second refrigerant pipe arranged in the first installation cavity, and a third refrigerant pipe arranged in the second installation cavity, the first refrigerant pipe is respectively connected to the second refrigerant pipe and the third refrigerant pipe through a three-way valve, and the second refrigerant pipe is connected to the third refrigerant pipe at one end away from the first refrigerant pipe.

[0009] As a further preferred embodiment of the present invention, the integrated box also includes a horizontal plate arranged in the first installation cavity and dividing the first installation cavity into an upper cavity and a lower cavity, a vertical plate arranged in the lower cavity and dividing the lower cavity into an electric control installation cavity and a passage cavity, and air holes respectively arranged on the horizontal plate and the vertical plate; the electric control integrated group is installed in the electric control installation cavity, and the second refrigerant pipe passes through the upper cavity and the passage cavity in the first installation cavity in sequence.

[0010] As a further preferred embodiment of the present invention, the integrated box also includes a fan arranged at the upper end of the passage cavity and located on one side of the second refrigerant pipe, and a drying box arranged in the electric control installation cavity and located at the upper end of the electric control integration group.

[0011] As a further preferred embodiment of the present invention, the integrated box further comprises a first arc-shaped guide plate arranged on the top wall of the upper cavity away from one end of the second refrigerant tube.

[0012] As a further preferred embodiment of the present invention, the integrated box further includes a second arc-shaped guide plate arranged on the top wall of the passage cavity.

[0013] As a further preferred embodiment of the present invention, the integrated box also includes a protective partition arranged between the second refrigerant pipe and the fan.

[0014] As a further preferred embodiment of the present invention, the integrated box further includes an exhaust port arranged at the passage cavity.

[0015] As a further preferred embodiment of the present invention, the air holes on the vertical plate have a reduced diameter section.

[0016] As a further preferred embodiment of the present invention, the refrigerant pipeline further includes a control valve arranged at the connection between the second refrigerant pipe and the third refrigerant pipe.

[0017] In summary, the utility model has the following beneficial effects:

[0018] The utility model provides an air conditioning unit and an installation method, which are suitable for cooling the lower deck of a convertible. By adding a front evaporator and installing an electric control integration group in an integration box, the device has the advantages of high integration and high heat transfer / cooling efficiency.

[0019] The utility model provides an air-conditioning unit which further solves the problem of heat dissipation of the electric control integrated unit and further improves the heating / cooling efficiency of the unit. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Attached Figure 1 It is a schematic diagram of the installation position of the utility model.

[0021] Attached Figure 2 It is a structural schematic diagram of the integrated box of the utility model.

[0022] Attached Figure 3 It is a partial structural schematic diagram of the integrated box of the utility model.

[0023] Attached Figure 4 It is a schematic diagram of the local structure of the refrigerant pipeline of the utility model.

[0024] Description of the drawings: front-end evaporator 1, integrated box 2, refrigerant pipeline 3;

[0025] A first installation cavity 21, a second installation cavity 22, a horizontal plate 23, a vertical plate 24, an air hole 25, a fan 26, a drying box 27, a first arc-shaped guide plate 28, a second arc-shaped guide plate 29, a protective baffle 210, and an exhaust port 211;

[0026] The first refrigerant pipe 31 , the second refrigerant pipe 32 , the third refrigerant pipe 33 , the three-way valve 34 , and the control valve 35 . DETAILED DESCRIPTION

[0027] In the description of the present utility model, it should be understood that the terms "upper", "lower", "inside", "outside", "left", "right", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, or are directions or positional relationships in which the utility model product is usually placed when in use, or are directions or positional relationships that are usually understood by those skilled in the art. These directions or positional relationships are only for the convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present utility model.

[0028] In addition, the terms "first", "second", etc. are only used to distinguish and describe, and should not be understood as indicating or implying relative importance.

[0029] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms such as "setting" and "connection" should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection: it can be a mechanical connection or an electrical connection: it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0030] As attached Figures 1 to 4 As shown, the present embodiment provides an air-conditioning unit for a double-decker convertible new energy bus, comprising a condensing unit assembly, an evaporator assembly and an electronic control integrated group, wherein the evaporator assembly comprises a front evaporator 1 arranged in the vehicle and located at the driver's seat, the condensing unit assembly and the electronic control integrated group are both arranged at the rear end of the vehicle, and the condensing unit assembly and the electronic control integrated group are both arranged in an integrated box 2; the front evaporator 1 is connected to the condensing unit assembly and the electronic control integrated group in the integrated box 2 via a refrigerant pipeline 3.

[0031] It is understandable that the condensing unit assembly is an existing structure, and the specific contents disclosed in the document with the authorization announcement number CN207128551U can be referred to, such as the condensing core, compressor, gas-liquid separator, etc. In addition to the front-end evaporator 1 mentioned above, the evaporator assembly also includes a rear-end evaporator arranged at the rear end of the car. The front-end evaporator 1 and the rear-end evaporator have the same structure, and may include structures such as an evaporating fan, an evaporating core, and an air outlet. The rear-end evaporator is preferably installed in an integrated box 2 and connected to the condensing unit assembly through a pipeline. Since the installation method and the pipeline are common arrangements in this field, they will not be repeated in this embodiment. The internal structure of the electronic control integrated group and the control relationship with other assemblies are common knowledge in this field, so they will not be introduced in detail.

[0032] In this embodiment, the integrated box 2 includes a first installation cavity 21 and a second installation cavity 22 for installing the electronic control integrated group and the condensing unit assembly respectively; the refrigerant pipeline 3 includes a first refrigerant tube 31 connected to the front end evaporator 1, a second refrigerant tube 32 arranged in the first installation cavity 21, and a third refrigerant tube 33 arranged in the second installation cavity 22. The first refrigerant tube 31 is respectively connected to the second refrigerant tube 32 and the third refrigerant tube 33 through a three-way valve 34, and the second refrigerant tube 32 is connected to the third refrigerant tube 33 at one end away from the first refrigerant tube 31.

[0033] It is worth mentioning that the present embodiment has made a special design for the layout position of the front-end evaporator 1 and the condensing unit assembly, so as to allow the pipeline filled with low-temperature and low-pressure gas to first pass through the first installation cavity 21 where the electronic control integrated group is installed to exchange heat with the air in the first installation cavity 21 to help the electronic control integrated group to cool down, thereby solving the problem that the electronic control integrated group is difficult to dissipate heat when installed in the integrated box 2.

[0034] It should be further explained that the three-way valve 34 can control the flow direction of the pipeline, specifically including two modes, the first mode is: the first refrigerant pipe 31-the second refrigerant pipe 32-the third refrigerant pipe 33; the second mode is: the first refrigerant pipe 31-the third refrigerant pipe 33. The first mode is used for cooling work, and the second mode is used for heating work. Since the temperature of the air itself is relatively low during heating work, the temperature of the electric control integrated group will not be too high to affect the work. At this time, for the efficiency of the flow path, the three-way valve 34 can be switched to reduce the stroke of the flow path, thereby improving the heating efficiency.

[0035] As a further preferred embodiment of the present invention, the integrated box 2 further includes a horizontal plate 23 arranged in the first installation cavity 21 and dividing the first installation cavity 21 into an upper cavity and a lower cavity, a vertical plate 24 arranged in the lower cavity and dividing the lower cavity into an electric control installation cavity and a passage cavity, and air holes 25 respectively arranged on the horizontal plate 23 and the vertical plate 24; the electric control integrated group is installed in the electric control installation cavity, and the second refrigerant pipe 32 passes through the upper cavity and the passage cavity in sequence in the first installation cavity 21. The advantages of such an arrangement are, first, the electric control integrated group is separated from the second refrigerant pipe 32 to avoid mutual influence; second, the electric control integrated group is installed at the lower end of the first installation cavity 21, and due to the settling characteristics of cold air, low-temperature gas can be filled in the electric control installation cavity, thereby helping the electric control integrated group to fully cool down.

[0036] As a further preferred embodiment of the present invention, the integrated box 2 further includes a fan 26 disposed at the upper end of the passage cavity and located on one side of the second refrigerant pipe 32, and a drying box 27 disposed in the electric control installation cavity and located at the upper end of the electric control integrated group. The gas generated by the fan 26 promotes the low-temperature gas in the first installation cavity 21 to circulate in a fixed direction, thereby improving the cooling efficiency; the drying box 27 is used to dry the gas before contacting the electric control integrated group to avoid affecting the operation of the electric control integrated group.

[0037] As a further preferred embodiment of this embodiment, the integrated box 2 further comprises a first arc-shaped guide plate 28 disposed on the top wall of the upper cavity away from the end of the second refrigerant tube 32; the integrated box 2 further comprises a second arc-shaped guide plate 29 disposed on the top wall of the passage cavity. The purpose of the above two guide plates is to further reduce the turbulence of the gas, thereby improving the cooling efficiency.

[0038] As a further preferred embodiment of the present invention, the integrated box 2 further comprises a protective baffle 210 disposed between the second refrigerant pipe 32 and the fan 26. The purpose of such a configuration is to prevent the second refrigerant pipe 32 from being affected by vibration of the fan 26 and other working conditions.

[0039] As a further preferred embodiment of this embodiment, the integrated box 2 further comprises an exhaust port 211 arranged at the passage cavity. A valve is arranged at the exhaust port 211 to control the air pressure of the first installation cavity 21 .

[0040] As a further preferred embodiment of the present invention, the air holes 25 on the vertical plate 24 have a reduced diameter section. The purpose of such a setting is to reduce the gas outflow per unit time in the electric control installation cavity, so as to improve the cooling effect.

[0041] As a further preferred embodiment of the present invention, the refrigerant pipeline 3 further includes a control valve 35 disposed at the connection between the second refrigerant pipe 32 and the third refrigerant pipe 33. This arrangement is used to further accurately control the direction of the extended flow path.

[0042] The specific embodiments described herein are merely examples of the spirit of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in similar ways, but they will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

Claims

1. An air conditioning unit for a double-decker convertible new energy bus, comprising a condensing unit assembly, an evaporator assembly and an electronic control integrated group, characterized in that The evaporator assembly comprises a front evaporator (1) arranged in the vehicle and located at the driver's seat, the condensing unit assembly and the electronic control integrated group are both arranged at the rear end of the vehicle, and the condensing unit assembly and the electronic control integrated group are both arranged in an integrated box (2); the front evaporator (1) is connected to the condensing unit assembly and the electronic control integrated group in the integrated box (2) through a refrigerant pipeline (3).

2. The air conditioning unit for a double-decker convertible new energy bus according to claim 1, characterized in that The integrated box (2) includes a first installation cavity (21) and a second installation cavity (22) for installing the electronic control integrated group and the condensing unit assembly respectively; the refrigerant pipeline (3) includes a first refrigerant pipe (31) connected to the front evaporator (1), a second refrigerant pipe (32) arranged in the first installation cavity (21), and a third refrigerant pipe (33) arranged in the second installation cavity (22); the first refrigerant pipe (31) is connected to the second refrigerant pipe (32) and the third refrigerant pipe (33) respectively through a three-way valve (34); the second refrigerant pipe (32) is connected to the third refrigerant pipe (33) at one end away from the first refrigerant pipe (31).

3. The air conditioning unit for a double-decker convertible new energy bus according to claim 2 is characterized in that The integrated box (2) further comprises a horizontal plate (23) arranged in the first installation cavity (21) and dividing the first installation cavity (21) into an upper cavity and a lower cavity, a vertical plate (24) arranged in the lower cavity and dividing the lower cavity into an electric control installation cavity and a passage cavity, and air holes (25) respectively arranged on the horizontal plate (23) and the vertical plate (24); the electric control integrated group is installed in the electric control installation cavity, and the second refrigerant pipe (32) passes through the upper cavity and the passage cavity in the first installation cavity (21) in sequence.

4. The air conditioning unit for a double-decker convertible new energy bus according to claim 3 is characterized in that The integrated box (2) further comprises a fan (26) arranged at the upper end of the passage cavity and located on one side of the second refrigerant pipe (32), and a drying box (27) arranged in the electric control installation cavity and located at the upper end of the electric control integrated group.

5. The air conditioning unit for a double-decker convertible new energy bus according to claim 3 is characterized in that The integrated box (2) further comprises a first arc-shaped guide plate (28) arranged on the top wall of the upper cavity at an end away from the second refrigerant pipe (32).

6. The air conditioning unit for a double-decker convertible new energy bus according to claim 5, characterized in that The integrated box (2) further comprises a second arc-shaped guide plate (29) arranged on the top wall of the passage cavity.

7. The air conditioning unit for a double-decker convertible new energy bus according to claim 4, characterized in that The integrated box (2) further includes a protective partition (210) disposed between the second refrigerant pipe (32) and the fan (26).

8. The air conditioning unit for a double-decker convertible new energy bus according to claim 3, characterized in that The integrated box (2) further comprises an exhaust port (211) arranged at the passage cavity.

9. The air conditioning unit for a double-decker convertible new energy bus according to claim 3, characterized in that The air hole (25) on the vertical plate (24) has a reduced diameter section.

10. The air conditioning unit for a double-decker convertible new energy bus according to claim 2, characterized in that The refrigerant pipeline (3) further includes a control valve (35) arranged at the connection between the second refrigerant pipe (32) and the third refrigerant pipe (33).

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