Direct and indirect mixed air conditioner heat pump system

Abstract

The utility model belongs to the technical field of whole vehicle air conditioner heat pump systems, and particularly relates to a direct and indirect mixed air conditioner heat pump system which comprises a waterway system and an air conditioner loop system. The waterway system comprises a circulating device, a battery heating piece and a heating box, and a pipeline is filled with cooling liquid. The air conditioner loop system comprises a compressor, an air conditioner box, a first electronic expansion valve, a heat absorption heat exchanger and a second electronic expansion valve, and a pipeline is filled with refrigerants. The water-cooling condenser is arranged in the heating box, and the battery heating piece, the heating box and the circulating device are connected to form water path circulation. An internal condenser and an air blower are arranged in the air-conditioning box and are respectively connected with the compressor, the water-cooling condenser and the heat-absorbing heat exchanger through a first tee joint and a second tee joint; compared with the prior art, the direct and indirect mixed air conditioner heat pump function is realized, the cost can be reduced, the heat loss is reduced, and the heating efficiency of a heat pump system is improved.

Description

Technical Field

[0001] This utility model relates to the technical field of vehicle air conditioning heat pump systems, and in particular to a direct and indirect hybrid air conditioning heat pump system. Background Technology

[0002] Currently, vehicle heat pump air conditioning systems can be divided into two types: direct heat pump and indirect heat pump. Direct heat pump systems typically have less heat leakage due to their shorter heat exchange path, but their cost is higher due to the larger number of air conditioning circuit valves. Indirect heat pump systems, on the other hand, typically have more heat leakage due to their longer heat exchange path, but their cost is lower because they have fewer air conditioning circuit valves. Although they have more water circuit valves than direct heat pump systems, water circuit valves are cheaper than air conditioning circuit valves.

[0003] This patent designs a whole vehicle heat pump air conditioning system that is between a direct heat pump system and an indirect heat pump system. It can take advantage of the low heat leakage of a direct heat pump system and the low cost of an indirect heat pump system. Utility Model Content

[0004] This invention addresses the shortcomings of existing technologies by developing a hybrid direct and indirect air conditioning heat pump system, which can reduce costs, decrease heat loss, and improve the heating efficiency of the heat pump system.

[0005] The technical solution of this utility model to solve the technical problem is as follows: a direct and indirect hybrid air conditioning heat pump system, including a water system and an air conditioning circuit system. The water system includes a circulation device, a battery heating element, and a heating box. The air conditioning circuit system includes a water-cooled condenser, a compressor, an air conditioning box, a first electronic expansion valve, a heat exchanger, and a second electronic expansion valve. The water-cooled condenser is installed in the heating box. One end of the battery heating element is connected to the output end of the circulation device through a conduit, and the other end is connected to the input end of the heating box through a conduit. The output end of the heating box is connected to the input end of the circulation device through a conduit. The input end of the air conditioning box and the input end of the water-cooled condenser are respectively connected to the output end of the compressor through conduits. A second electronic expansion valve is installed between the input end of the water-cooled condenser and the output end of the compressor. The output end of the water-cooled condenser and the output end of the air conditioning box are respectively connected to the input end of the heat exchanger through conduits. A first electronic expansion valve is installed between the input end of the heat exchanger and the output ends of the water-cooled condenser and the air conditioning box. The output end of the heat exchanger is connected to the input end of the compressor through a conduit.

[0006] Preferably, the air conditioning unit includes an internal condenser and a blower. The input end of the internal condenser is connected to the output end of the compressor, and the output end of the internal condenser is connected to a heat exchanger.

[0007] Preferably, the circulation device is a water pump.

[0008] Preferably, the air conditioning circuit system is provided with a first three-way valve, which is connected to the output end of the compressor, the input end of the air conditioning unit and the input end of the water-cooled condenser through conduits, and the second electronic expansion valve is provided between the input end of the water-cooled condenser and the first three-way valve.

[0009] Preferably, the air conditioning circuit system is provided with a second three-way valve, which is connected to the output end of the air conditioning unit, the output end of the water-cooled condenser and the input end of the low-temperature heat exchanger through conduits, and the first electronic expansion valve is located between the output end of the heat absorption heat exchanger and the second three-way valve.

[0010] Preferably, the water system pipeline is filled with coolant.

[0011] Preferably, the air conditioning circuit system piping is filled with refrigerant.

[0012] The effects provided in the utility model description are merely those of the embodiments, and not all the effects of the utility model. The above technical solution has the following advantages or beneficial effects:

[0013] 1. Compared with traditional direct heat pump and indirect heat pump system solutions, the overall cost of this utility model is lower;

[0014] 2. This utility model utilizes the technical advantages of both direct and indirect heat pumps to achieve a hybrid direct and indirect air conditioning heat pump function, resulting in low heat loss and low energy consumption. Attached Figure Description

[0015] Figure 1 This is a pipeline connection diagram of the present invention;

[0016] The components include: 1. Water pump; 2. Battery heating element; 3. Water-cooled condenser; 31. Heating box; 4. Compressor; 5. First tee; 6. Air conditioning unit; 61. Internal condenser; 62. Blower; 7. Second tee; 8. First electronic expansion valve; 9. Heat exchanger; 10. Second electronic expansion valve. Detailed Implementation

[0017] To clearly illustrate the technical features of this solution, the present invention will be described in detail below through specific implementation methods and in conjunction with the accompanying drawings.

[0018] Example 1

[0019] See Figure 1A direct and indirect hybrid air conditioning heat pump system includes a water system and an air conditioning circuit system. The water system includes a circulation device, a battery heater 2, and a heating box 31. The air conditioning circuit system includes a water-cooled condenser 3, a compressor 4, an air conditioning unit 6, a first electronic expansion valve 8, a heat exchanger 9, and a second electronic expansion valve 10. The water-cooled condenser 3 is disposed in the heating box 31. One end of the battery heater 2 is connected to the output end of the circulation device via a conduit, and the other end is connected to the input end of the heating box 31 via a conduit. The output end of the heating box 31 is connected to the input end of the circulation device. The air conditioning unit 6 and the water-cooled condenser 3 are connected to the output end of the compressor 4 via conduits. A second electronic expansion valve 10 is provided between the input end of the water-cooled condenser 3 and the output end of the compressor 4. The output end of the water-cooled condenser 3 and the output end of the air conditioning unit 6 are connected to the input end of the heat exchanger 9 via conduits. A first electronic expansion valve 8 is provided between the input end of the heat exchanger 9 and the output ends of the water-cooled condenser 3 and the air conditioning unit 6. The output end of the heat exchanger 9 is connected to the input end of the compressor 4 via a conduit.

[0020] The air conditioning unit 6 includes an internal condenser 61 and a blower 62. The input end of the internal condenser 61 is connected to the output end of the compressor 4, and the output end of the internal condenser 61 is connected to the heat exchanger 9.

[0021] The circulation device is a water pump 1.

[0022] The air conditioning circuit system is provided with a first three-way valve 5, which is connected to the output end of the compressor 4, the input end of the air conditioning unit 6 and the input end of the water-cooled condenser 3 through conduits respectively. The second electronic expansion valve 10 is located between the input end of the water-cooled condenser 3 and the first three-way valve 5.

[0023] The air conditioning circuit system is provided with a second three-way valve 7, which is connected to the output end of the air conditioning unit 6, the output end of the water-cooled condenser 3 and the input end of the low-temperature heat exchanger through conduits respectively. The first electronic expansion valve 8 is located between the output end of the heat absorption heat exchanger 9 and the second three-way valve 7.

[0024] The water system pipelines are filled with coolant.

[0025] The air conditioning circuit system piping is filled with refrigerant.

[0026] When both the battery and the crew compartment request heating:

[0027] The high-temperature refrigerant at the outlet of compressor 4 releases heat through water-cooled condenser 3 and internal condenser 61, and the refrigerant flow through both is distributed by the second electronic expansion valve 10.

[0028] The water-cooled condenser 3 releases the heat of the high-temperature refrigerant into the coolant in the water circuit heating box 31, and by turning on the water pump 1, the coolant is circulated to carry the heat to the battery heating element 2 to heat the battery.

[0029] The internal condenser 61 releases the heat of the high-temperature refrigerant into the air in the air conditioning unit 6, and by turning on the blower 62, it circulates the air to carry the heat to the passenger compartment to heat the passenger compartment.

[0030] The heat exchanger 9 is the heat-absorbing component of the heat pump system, used to absorb heat from the air, motor, etc. for heat pump heating. The first electronic expansion valve 8 is installed at the input end of the heat exchanger 9, which enables the heat pump system to maintain a high energy efficiency ratio under various operating conditions and reduce system energy consumption.

[0031] Example 2

[0032] Cost comparison (the cost comparison focuses on components other than those common to all three types of heat pumps):

[0033] List of standard direct heat pump components:

[0034] Air conditioning circuit: one external condenser, one internal condenser, and one electronic expansion valve

[0035] Water system: A water valve or electric heater, or both, unless the air conditioning system does not have a battery heating function.

[0036] List of dedicated components for conventional indirect heat pumps:

[0037] Air conditioning circuit: one water-cooled condenser.

[0038] Water system: one heater pump, one heater core, and one water valve.

[0039] List of dedicated components for this patented heat pump system:

[0040] Air conditioning circuit: one water-cooled condenser, one internal condenser, and one electronic expansion valve.

[0041] Waterway: None.

[0042] The price of an external condenser is roughly the same as that of a water-cooled condenser, the price of a heater core is roughly the same as that of an internal condenser, and the price of a heater pump and water valve is usually no less than that of an electronic expansion valve.

[0043] As can be seen from the above comparison, this patent has a cost advantage over both conventional direct heat pumps and indirect heat pumps.

[0044] Example 3

[0045] Performance comparison:

[0046] Battery heating is usually done with coolant, but it can be divided into two types: heat pump system heating and non-heat pump system heating (PTC heating, motor waste heat recovery heating, etc.). Passenger compartment heating is divided into refrigerant heating and coolant heating.

[0047] Direct heat pump: The crew cabin is heated by refrigerant, resulting in low heat loss; the battery is heated by a non-heat pump system, resulting in high heat loss.

[0048] Indirect heat pumps: heating the crew compartment coolant results in significant heat loss; battery heat pump systems provide heating with low energy consumption.

[0049] This patented system features refrigerant heating in the passenger compartment, resulting in minimal heat loss; and a battery heat pump system for heating, leading to low energy consumption.

[0050] Although the specific embodiments of the present utility model have been described above in conjunction with the accompanying drawings, this is not intended to limit the scope of protection of the present utility model. Based on the technical solution of the present utility model, various modifications or variations that can be made by those skilled in the art without creative effort are still within the scope of protection of the present utility model.

Claims

1. A hybrid direct and indirect air conditioning heat pump system, characterized in that: The system includes a water system and an air conditioning circuit system. The water system includes a circulation device, a battery heater (2), and a heating box (31). The air conditioning circuit system includes a water-cooled condenser (3), a compressor (4), an air conditioning unit (6), a first electronic expansion valve (8), a heat exchanger (9), and a second electronic expansion valve (10). The water-cooled condenser (3) is installed in the heating box (31). One end of the battery heater (2) is connected to the output end of the circulation device through a conduit, and the other end is connected to the input end of the heating box (31) through a conduit. The output end of the heating box (31) is connected to the input end of the circulation device through a conduit. The air conditioning unit... The input end of (6) and the input end of the water-cooled condenser (3) are respectively connected to the output end of the compressor (4) through conduits. A second electronic expansion valve (10) is provided between the input end of the water-cooled condenser (3) and the output end of the compressor (4). The output end of the water-cooled condenser (3) and the output end of the air conditioning unit (6) are respectively connected to the input end of the heat exchanger (9) through conduits. A first electronic expansion valve (8) is provided between the input end of the heat exchanger (9) and the output end of the water-cooled condenser (3) and the output end of the air conditioning unit (6). The output end of the heat exchanger (9) is connected to the input end of the compressor (4) through a conduit.

2. The air conditioning heat pump system with direct and indirect hybrid operation according to claim 1, characterized in that, The air conditioning unit (6) includes an internal condenser (61) and a blower (62). The input end of the internal condenser (61) is connected to the output end of the compressor (4), and the output end of the internal condenser (61) is connected to the heat exchanger (9).

3. The air conditioning heat pump system according to claim 1, characterized in that, The circulation device is a water pump (1).

4. The air conditioning heat pump system with direct and indirect hybrid operation according to claim 1, characterized in that, The air conditioning circuit system is provided with a first three-way valve (5), which is connected to the output end of the compressor (4), the input end of the air conditioning unit (6) and the input end of the water-cooled condenser (3) through conduits respectively. The second electronic expansion valve (10) is located between the input end of the water-cooled condenser (3) and the first three-way valve (5).

5. A direct and indirect hybrid air conditioning heat pump system according to claim 1, characterized in that, The air conditioning circuit system is provided with a second three-way valve (7), which is connected to the output end of the air conditioning unit (6), the output end of the water-cooled condenser (3) and the input end of the low-heat heat exchanger through conduits respectively. The first electronic expansion valve (8) is located between the output end of the heat absorption heat exchanger (9) and the second three-way valve (7).

6. The air conditioning heat pump system according to claim 1, characterized in that, The water system pipelines are filled with coolant.

7. A direct and indirect hybrid air conditioning heat pump system according to claim 1, characterized in that, The air conditioning circuit system piping is filled with refrigerant.

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