Vehicle-mounted air conditioning system

Abstract

A vehicle-mounted air conditioning system comprises a compressor, a condenser, a liquid storage device, a main cab evaporator, an auxiliary cab evaporator, a first three-way connector, a second three-way connector, a first electromagnetic valve and a second electromagnetic valve. An outlet of the compressor is sequentially connected with a condenser, a liquid storage device and a first connector of a first three-way connector through a high-pressure pipe, and a second connector of the first three-way connector is sequentially connected with a first electromagnetic valve and an inlet of a main cab evaporator through a high-pressure pipe. A third connector of the first three-way connector is sequentially connected with a second electromagnetic valve and an inlet of a co-cab evaporator through a high-pressure pipe. An inlet of the compressor is connected with a first connector of a second three-way connector through a low-pressure pipe, a second connector of the second three-way connector is connected with an outlet of the main cab evaporator through a low-pressure pipe, and a third connector of the second three-way connector is connected with an outlet of the auxiliary cab evaporator through a low-pressure pipe. By optimizing the pipeline and pipeline control, one compressor, one condenser and one liquid storage device can be used for controlling and using air conditioning systems of a main cab and an auxiliary cab.

Description

Technical Field

[0001] The present application relates to the technical field of air conditioners, and in particular to an on-board air conditioning system for a dual-cab vehicle. Background Art

[0002] Dual-cab special vehicle chassis are equipped with two cabs, one for the driver and one for the passenger, to meet user requirements. These cabs can be independently controlled for forward and reverse driving. To enhance driver comfort, air conditioning systems are required in both cabs. Typically, an air conditioning system consists of a compressor, a condenser, an evaporator, a reservoir, and the corresponding piping and circuits. For these dual-cab vehicles, the need for two air conditioning systems increases installation costs and occupies more space on the vehicle for the air conditioning components. Utility Model Content

[0003] In response to at least one of the above-mentioned problems, the present application provides a vehicle-mounted air-conditioning system designed for a dual-cab vehicle. Through optimization of pipelines and pipeline control, one compressor, one condenser, and one set of liquid storage tanks can respectively meet the control needs of the air-conditioning systems of the main cab and the co-cab.

[0004] This application adopts the following technical solutions:

[0005] A vehicle air conditioning system, comprising: a compressor, a condenser, a liquid reservoir, a main driver's cab evaporator, a co-driver's cab evaporator, a first three-way connector, a second three-way connector, a first solenoid valve, and a second solenoid valve;

[0006] The outlet of the compressor is connected to the condenser, the liquid reservoir, and the first interface of the three-way joint in sequence through a high-pressure pipe; the second interface of the three-way joint is connected to the first solenoid valve and the inlet of the main cab evaporator in sequence through a high-pressure pipe; the third interface of the three-way joint is connected to the second solenoid valve and the inlet of the passenger cab evaporator in sequence through a high-pressure pipe;

[0007] The inlet of the compressor is connected to the first interface of the three-way joint 2 through a low-pressure pipe, the second interface of the three-way joint 2 is connected to the outlet of the main cab evaporator through a low-pressure pipe, and the third interface of the three-way joint 2 is connected to the outlet of the co-driver's cab evaporator through a low-pressure pipe.

[0008] Furthermore, when the air conditioner in the main cab is working, the first solenoid valve is energized and turned on, and the second solenoid valve is de-energized and closed;

[0009] When the air conditioner in the co-pilot's cab is working, the second solenoid valve is energized and turned on, and the first solenoid valve is de-energized and closed.

[0010] Furthermore, the inlet and outlet of the main cab evaporator are provided with a one-way valve;

[0011] The inlet and outlet of the passenger compartment evaporator are provided with a one-way valve.

[0012] Furthermore, the solenoid valve 1 and the solenoid valve 2 are normally closed solenoid valves.

[0013] Beneficial effects of this application:

[0014] This application can use solenoid valves to control the on and off of corresponding air-conditioning pipelines, and realize the use of main cab air conditioning and co-driver cab air conditioning respectively through a compressor, a condenser and a set of liquid storage devices. This application can be used on the chassis of double-cab special vehicles, simplifying the air-conditioning system, saving installation space and reducing the cost of the entire vehicle. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present application;

[0016] Figure 2 This is a schematic diagram of the working state of the main cab evaporator in the embodiment of the present application;

[0017] Figure 3 This is a schematic diagram of the working state of the evaporator in the passenger compartment in the embodiment of the present application;

[0018] In the figure: 1 compressor, 2 condenser, 3 accumulator, 4 main cab evaporator, 5 co-driver cab evaporator, 6 tee connector 1, 7 tee connector 2, 8 solenoid valve 1, 9 solenoid valve 2, 10 high-pressure pipe 1, 11 high-pressure pipe 2, 12 high-pressure pipe 3, 13 high-pressure pipe 4, 14 high-pressure pipe 5, 15 high-pressure pipe 6, 16 high-pressure pipe 7, 17 low-pressure pipe 1, 18 low-pressure pipe 2, 19 low-pressure pipe 3. DETAILED DESCRIPTION

[0019] To make the above features and advantages of the present application more clearly understood, the specific embodiments of the present application are described in detail below with reference to the accompanying drawings. The following description sets forth many specific details to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways than those described herein, and those skilled in the art can make similar improvements without violating the scope of the present application. Therefore, the present application is not limited to the specific embodiments disclosed below.

[0020] Furthermore, the terms "one," "two," etc., are used for descriptive purposes only and should not be understood to indicate or imply relative importance or to implicitly indicate the number of technical features indicated. Thus, a feature specified as "one" or "two" may explicitly or implicitly include at least one of the features.

[0021] Reference Figure 1The present application provides a vehicle air conditioning system, comprising: a compressor 1, a condenser 2, a liquid reservoir 3, a main cab evaporator 4, a co-driver cab evaporator 5, a three-way connector 1 6, a three-way connector 2 7, a solenoid valve 1 8, and a solenoid valve 2 9;

[0022] The outlet of the compressor 1 is connected to the condenser 2, the liquid reservoir 3, and the first interface of the three-way joint 6 in sequence through a high-pressure pipe. The second interface of the three-way joint 6 is connected to the solenoid valve 8 and the inlet of the main cab evaporator 4 in sequence through a high-pressure pipe. The third interface of the three-way joint 6 is connected to the solenoid valve 9 and the inlet of the passenger cab evaporator 5 in sequence through a high-pressure pipe.

[0023] The inlet of the compressor 1 is connected to the first interface of the three-way joint 7 through a low-pressure pipe, the second interface of the three-way joint 7 is connected to the outlet of the main cab evaporator 4 through a low-pressure pipe, and the third interface of the three-way joint 7 is connected to the outlet of the co-driver's cab evaporator 5 through a low-pressure pipe.

[0024] Furthermore, when the air conditioner in the main cab is working, the solenoid valve 1 8 is energized and turned on, and the solenoid valve 2 9 is de-energized and closed;

[0025] When the air conditioner in the co-pilot's cab is working, the solenoid valve 2 9 is energized and turned on, and the solenoid valve 1 8 is de-energized and closed.

[0026] Specifically, the working principle of this application is as follows:

[0027] Reference Figure 2 When the main cab air conditioning is operating, solenoid valve 1 (8) is energized, connecting high-pressure pipe 4 (13) and high-pressure pipe 5 (14). Solenoid valve 2 (9) remains de-energized and closed, disconnecting high-pressure pipe 6 (15) and high-pressure pipe 7 (16). At this point, the air conditioning refrigerant circulates as follows: main cab evaporator 4 → low-pressure pipe 1 (17) → tee connector 2 (7) → low-pressure pipe 2 (18) → compressor 1 → high-pressure pipe 1 (10) → condenser 2 → high-pressure pipe 2 (11) → reservoir 3 → high-pressure pipe 3 (12) → tee connector 1 (6) → high-pressure pipe 4 (13) → solenoid valve 1 (8) → high-pressure pipe 5 (14) → main cab evaporator 4, completing one operating cycle. The dotted line represents the inactive portion.

[0028] Referring to input 3, when the air conditioning in the passenger compartment is operating, solenoid valve 2 (9) is energized, connecting high-pressure pipe 6 (15) and high-pressure pipe 7 (16). Solenoid valve 1 (8) is de-energized, closing high-pressure pipe 4 (13) and high-pressure pipe 5 (14). At this point, the air conditioning refrigerant circulates as follows: passenger compartment evaporator 5 → low-pressure pipe 3 (19) → tee connector 2 (7) → low-pressure pipe 2 (18) → compressor 1 → high-pressure pipe 1 (10) → condenser 2 → high-pressure pipe 2 (11) → reservoir 3 → high-pressure pipe 3 (12) → tee connector 1 (6) → high-pressure pipe 6 (15) → solenoid valve 2 (9) → high-pressure pipe 7 (16) → passenger compartment evaporator 5, completing one operating cycle. The dotted line represents the inactive portion.

[0029] It is understandable that the inlet and outlet of the main cab evaporator 4 are provided with a one-way valve;

[0030] The inlet and outlet of the passenger compartment evaporator 5 are provided with a one-way valve.

[0031] Specifically, the one-way valve at the inlet of the main cab evaporator 4 allows the refrigerant to enter the main cab evaporator 4 only through the high-pressure pipe, and the one-way valve at the outlet of the main cab evaporator 4 allows the refrigerant to enter the low-pressure pipe only through the main cab evaporator 4. The one-way valve at the inlet of the passenger cab evaporator 5 allows the refrigerant to enter the passenger cab evaporator 5 only through the high-pressure pipe, and the one-way valve at the outlet of the passenger cab evaporator 5 allows the refrigerant to enter the low-pressure pipe only through the passenger cab evaporator 5.

[0032] It can be understood that the solenoid valve 1 8 and the solenoid valve 2 9 are normally closed solenoid valves.

[0033] Specifically, when the air conditioners in the two cabs are not working, the two solenoid valves are in a closed state; when one of the solenoid valves is working, the other solenoid valve is in a closed state, which can ensure that only one refrigerant is circulated.

[0034] The above description is merely a preferred embodiment of the present application and is not intended to limit the present application. Various modifications and variations are possible for those skilled in the art. Any modifications, equivalent substitutions, improvements, etc. made within the principles of the present application shall be included within the scope of protection of the present application.

Claims

1. A vehicle air conditioning system, characterized in that: include: Compressor, condenser, liquid receiver, main cab evaporator, co-driver cab evaporator, tee connector 1, tee connector 2, solenoid valve 1, and solenoid valve 2; The outlet of the compressor is connected to the condenser, the liquid reservoir, and the first interface of the three-way joint in sequence through a high-pressure pipe; the second interface of the three-way joint is connected to the first solenoid valve and the inlet of the main cab evaporator in sequence through a high-pressure pipe; the third interface of the three-way joint is connected to the second solenoid valve and the inlet of the passenger cab evaporator in sequence through a high-pressure pipe; The inlet of the compressor is connected to the first interface of the three-way joint 2 through a low-pressure pipe, the second interface of the three-way joint 2 is connected to the outlet of the main cab evaporator through a low-pressure pipe, and the third interface of the three-way joint 2 is connected to the outlet of the co-driver's cab evaporator through a low-pressure pipe.

2. The vehicle air conditioning system according to claim 1, characterized in that: When the air conditioner in the main cab is working, the solenoid valve 1 is energized and turned on, and the solenoid valve 2 is de-energized and closed; When the air conditioner in the co-pilot's cab is working, the second solenoid valve is energized and turned on, and the first solenoid valve is de-energized and closed.

3. A vehicle air conditioning system according to any one of claims 1 or 2, characterized in that: The inlet and outlet of the main cab evaporator are provided with a one-way valve; The inlet and outlet of the passenger compartment evaporator are provided with a one-way valve.

4. A vehicle air conditioning system according to any one of claims 1 or 2, characterized in that: The first solenoid valve and the second solenoid valve are normally closed solenoid valves.

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