Motor home air conditioner, refrigerator and hot water integrated system based on air expansion refrigeration

Abstract

The utility model discloses a motor home air conditioner, refrigerator and hot water integrated system based on air expansion refrigeration, which comprises an air expansion refrigeration system arranged in a motor home, and the air expansion refrigeration system comprises a compressor, an air cooling heat exchanger, a heat regenerator, an expansion machine and a heat exchanger I; an outlet of the compressor sequentially communicates with the air cooling heat exchanger, a first inlet of the heat regenerator and an inlet of the expansion machine. An outlet of the expansion machine sequentially communicates with the cold side of the first heat exchanger, a second inlet of the heat regenerator and an inlet of the compressor. An air return port of the space in the touring car is sequentially communicated with a first fan, the hot side of a first heat exchanger and an air supply port through pipelines; an outlet of the compressor is connected with a heat exchanger III for preparing hot water; and an outlet of the expansion machine is connected with a fourth heat exchanger for refrigerating the refrigerator of the motor home. The system takes air as a circulating medium and is safe and environment-friendly; the internal space of the motor home is reasonably utilized by integrating the first heat exchanger, the second heat exchanger, the third heat exchanger and the fourth heat exchanger, and the requirement for cold and heat for the motor home is met.

Description

Technical Field

[0001] The utility model relates to the technical field of air conditioning, in particular to an integrated system of a motorhome air conditioner, a refrigerator and a hot water system based on air expansion refrigeration. Background Art

[0002] RVs have become an important means of transportation when traveling. In order to improve the environment inside RVs, they are usually equipped with air-conditioning systems to maintain a suitable temperature inside the RVs. The refrigerants used in existing RV air-conditioning systems are not environmentally friendly, the system operating pressure is high, and the heat of the air-conditioning system is not reasonably recycled and utilized. RVs usually have washing areas and dining areas, which require special water heaters and refrigerators to meet normal hot water and food refrigeration needs. Multiple sets of equipment operate independently, which is costly and takes up a lot of RV space. Utility Model Content

[0003] The utility model is to overcome the shortcomings of the above-mentioned prior art and provide an integrated system of RV air conditioning, refrigerator and hot water based on air expansion refrigeration, so as to solve the problems of large energy waste in the existing RV cooling and heating systems, and the need to set up multiple sets of independent equipment for food refrigeration and hot water supply in the RV, resulting in high cost.

[0004] The technical solution adopted by the utility model to solve its technical problems is:

[0005] An integrated system of RV air conditioning, refrigerator, and hot water based on air expansion refrigeration includes an air expansion refrigeration system installed in the RV, the air expansion refrigeration system including a compressor, an air-cooled heat exchanger, a regenerator, an expander, and a heat exchanger 1; the outlet of the compressor is connected to the air-cooled heat exchanger, the first inlet of the regenerator, and the inlet of the expander in sequence; the outlet of the expander is connected to the cold side of the heat exchanger 1, the second inlet of the regenerator, and the inlet of the compressor in sequence; the return air outlet of the space inside the RV is connected to the ventilator 1, the hot side of the heat exchanger 1, and the air supply outlet in sequence through a pipeline.

[0006] Furthermore, the expander and compressor adopt a dynamic pressure gas suspension compression and expansion integrated machine.

[0007] Furthermore, the hot side inlet and outlet of the heat exchanger 1 are respectively installed with valve 1 and valve 2 for controlling the air on and off.

[0008] Furthermore, the air expansion refrigeration system includes a heat exchanger 2, the hot side of which is connected in series between the outlet of the compressor and the air-cooled heat exchanger; the cold side inlet of the heat exchanger 2 is connected to a valve 3 and an air outlet of the fan 1 in sequence through a pipeline; the cold side outlet of the heat exchanger 2 is connected to a valve 4 and an air supply outlet of the space inside the RV in sequence through a pipeline.

[0009] Furthermore, the air expansion refrigeration system includes heat exchanger three, the hot side of heat exchanger three is connected in series between the outlet of the compressor and the air-cooled heat exchanger; the cold side inlet of heat exchanger three is connected to the water pump and the water tank in sequence through a water pipe; the cold side outlet of heat exchanger three is connected to the RV washing area through a water pipe.

[0010] Furthermore, the air expansion refrigeration system includes a heat exchanger four, the cold side of which is connected in series between the outlet of the expander and the inlet of the compressor; the hot side inlet of the heat exchanger four is connected to the air outlet of the ventilator two and the RV refrigerator in sequence; the hot side outlet of the heat exchanger four is connected to the air inlet of the RV refrigerator.

[0011] The utility model has the following beneficial effects:

[0012] 1. The utility model provides an integrated system of RV air conditioning, refrigerator, and hot water based on air expansion refrigeration. The air expansion refrigeration system includes a compressor, an air-cooled heat exchanger, a heat regenerator, an expander, a heat exchanger 1, and a heat exchanger 2. The air in the RV space is cooled by heat exchange in the heat exchanger 1 and heated by heat exchange in the heat exchanger 2, thereby meeting the cooling and heating needs of the RV.

[0013] 2. This system uses air as the circulating medium, which is safe and environmentally friendly. It eliminates the need for frequent filtering work of the filtering device. The compressor and expander use a dynamic pressure gas suspension compression and expansion integrated machine, and the high-speed rotation automatic suspension process is simple, with small operating losses.

[0014] 3. The system's compressor outlet pipeline is connected in series with heat exchanger 3 to heat the water in the water tank to provide hot water for washing in the RV. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The utility model is further described below in conjunction with the accompanying drawings:

[0016] Figure 1 It is a schematic diagram of the system principle of the utility model.

[0017] In the figure, 1. compressor; 2. air-cooled heat exchanger; 3. regenerator; 4. expander; 5. heat exchanger one; 6. fan one; 7. heat exchanger two; 8. heat exchanger three; 9. water pump; 10. water tank; 11. heat exchanger four; 12. RV refrigerator; 13. fan two; 101. valve one; 102. valve two; 103. valve three; 104. valve four. DETAILED DESCRIPTION

[0018] In order to make the purpose, features and advantages of the present invention more obvious and understandable, the technical solution of the present invention will be clearly and completely described below in conjunction with the drawings in the specific embodiments.

[0019] like Figure 1As shown, the utility model provides an integrated system of RV air conditioning, refrigerator, and hot water based on air expansion refrigeration, including an air expansion refrigeration system installed in the RV, the air expansion refrigeration system including a compressor 1, an air-cooled heat exchanger 2, a regenerator 3, an expander 4, and a heat exchanger 5; the outlet of the compressor 1 is connected to the air-cooled heat exchanger 2, the first inlet of the regenerator 3, and the inlet of the expander 4 in sequence; the outlet of the expander 4 is connected to the cold side of the heat exchanger 5, the second inlet of the regenerator 3, and the inlet of the compressor 1 in sequence; the return air outlet of the space inside the RV is connected to the ventilator 6, the hot side of the heat exchanger 5, and the air supply outlet in sequence through a pipeline.

[0020] The air in the RV space is sucked from the return air outlet through the fan 6 and then reaches the air supply outlet of the RV space through the gas pipeline; the gas pipeline is connected to the air expansion refrigeration system, and the low-temperature air output by the expander 4 is used to cool the air in the RV space.

[0021] The expander 4 and the compressor 1 adopt a dynamic pressure air suspension compression and expansion integrated machine. The air expansion refrigeration system of this device uses air as the heating and cooling medium, which is safe and environmentally friendly; the air circulates in the compressor 1, the air-cooled heat exchanger 2, the regenerator 3, and the expander 4, and there is no need to frequently filter the air through the filter device; compared with the static pressure air suspension that requires a stable pressure air source, the dynamic pressure air suspension compression and expansion integrated machine relies on the dynamic pressure air suspension bearing to rotate automatically at high speed, the suspension process is simpler, and the running friction loss is small.

[0022] The hot side inlet and outlet of heat exchanger 15 are respectively equipped with valve 101 and valve 2 102 for controlling the air on and off. Valve 101 is connected in series to the pipeline between fan 16 and the hot side of heat exchanger 15; valve 2 102 is connected in series to the pipeline between the air supply port in the RV space and the hot side of heat exchanger 15;

[0023] Preferably, valve one 101 and valve two 102 are both electric valves and are electrically connected to the RV control unit. The opening and closing of valve one 101 and valve two 102 are controlled according to temperature requirements to control the amount of low-temperature air delivered into the RV space.

[0024] The air expansion refrigeration system includes a heat exchanger 2 7, the hot side of which is connected in series between the outlet of the compressor 1 and the air-cooled heat exchanger 2; the cold side inlet of the heat exchanger 2 7 is connected to the valve 3 103 and the air outlet of the fan 1 6 in sequence through a pipeline; the cold side outlet of the heat exchanger 2 7 is connected to the valve 4 104 and the air supply outlet of the space inside the RV in sequence through a pipeline.

[0025] Preferably, valve three 103 and valve four 104 are both electric valves and are electrically connected to the RV control unit. The opening and closing of valve three 103 and valve four 104 are controlled according to temperature requirements to control the amount of warm air delivered into the RV space.

[0026] The air expansion refrigeration system includes a heat exchanger 3 8, the hot side of the heat exchanger 3 8 is connected in series between the outlet of the compressor 1 and the air-cooled heat exchanger 2; the cold side inlet of the heat exchanger 3 8 is connected to the water pump 9 and the water tank 10 in sequence through a water pipe; the cold side outlet of the heat exchanger 3 8 is connected to the RV washing area through a water pipe.

[0027] Specifically, the hot side of heat exchanger three 8 and the hot side of heat exchanger two 7 are arranged in series to utilize the system heat step by step; the water in the water tank 10 enters the cold side of heat exchanger three 8, and exchanges heat with the hot side of heat exchanger three 8 to increase the temperature, recovering the system's thermal energy to provide hot water for washing in the RV and meet the heating needs.

[0028] The air expansion refrigeration system includes a heat exchanger 11, the cold side of the heat exchanger 11 is connected in series between the outlet of the expander 4 and the inlet of the compressor 1; the hot side inlet of the heat exchanger 11 is connected to the air outlet of the ventilator 13 and the RV refrigerator 12 in sequence; the hot side outlet of the heat exchanger 11 is connected to the air inlet of the RV refrigerator 12.

[0029] Specifically, the cold side of heat exchanger four 11 is arranged in series with the cold side of heat exchanger one 5; the air in the RV refrigerator 12 is driven by fan two 13 to enter the hot side of heat exchanger four 11, and exchanges heat with the hot side of heat exchanger three 8 for cooling, thereby lowering the temperature in the refrigerator to meet the low-temperature storage needs of the RV.

[0030] By rationally recycling the hot air and cold air of the air expansion refrigeration system, the air conditioner, refrigerator, and hot water required by the RV can be rationally integrated to reduce space occupancy and rationally utilize the interior space of the RV.

[0031] The operation process of the RV integrated system of the utility model is as follows: S1, when the RV needs cooling in summer, the compressor 1 and the expander 4 are controlled to start; the fan 6 is controlled to start, the valve 101 and the valve 2 102 are opened, the valve 3 103 and the valve 4 104 are closed, and the air in the RV space is transported to the hot side of the heat exchanger 5, and after heat exchange and cooling, it returns to the RV space to meet the cooling needs of the RV.

[0032] S2. When the RV needs heating in winter, valve one 101 and valve two 102 are closed, valve three 103 and valve four 104 are opened, and the air in the RV space is transported to the cold side of heat exchanger two 7, and after heat exchange and temperature rise, it returns to the RV space to meet the heating needs of the RV.

[0033] During the cooling and heating process, the system can meet the refrigerator refrigeration temperature requirements and provide hot water for the RV washing area; the high-temperature gas at the outlet of compressor 1 enters heat exchanger 2 7 and heat exchanger 3 8 step by step for heat exchange and cooling, and the water pump 9 transports the water in the water tank 10 and supplies it to the RV washing area after the water is heated; the low-temperature gas at the outlet of expander 4 enters heat exchanger 1 5 and heat exchanger 4 11 step by step for heat exchange and heating, and fan 2 13 transports the ambient gas in the RV refrigerator 12 into heat exchanger 4 11 for cooling, thereby meeting the low-temperature refrigeration needs.

[0034] The terms "connected" and "connection" in the present invention should be understood in a broad sense. For example, it can be a connection or a detachable connection; it can be a direct connection or an indirect connection through an intermediate component. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0035] The embodiments of the utility model are only a part of the embodiments, not all of the embodiments. Based on the embodiments in this patent, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this patent. This specification is described in accordance with the implementation methods only for the sake of clarity. Those skilled in the art should take the specification as a whole. The technical solutions in the various embodiments can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. An integrated system of RV air conditioning, refrigerator and hot water based on air expansion refrigeration, characterized in that: The invention comprises an air expansion refrigeration system installed in a recreational vehicle, the air expansion refrigeration system comprising a compressor (1), an air-cooled heat exchanger (2), a regenerator (3), an expander (4), and a heat exchanger (5); the outlet of the compressor (1) is connected in sequence to the air-cooled heat exchanger (2), the first inlet of the regenerator (3), and the inlet of the expander (4); the outlet of the expander (4) is connected in sequence to the cold side of the heat exchanger (5), the second inlet of the regenerator (3), and the inlet of the compressor (1); the return air outlet of the space inside the recreational vehicle is connected in sequence to the ventilator (6), the hot side of the heat exchanger (5), and the air supply outlet through a pipeline.

2. The integrated system of RV air conditioner, refrigerator and hot water based on air expansion refrigeration according to claim 1, characterized in that: The expander (4) and the compressor (1) are dynamic pressure gas suspension compression and expansion integrated machines.

3. The integrated system of RV air conditioner, refrigerator and hot water based on air expansion refrigeration as claimed in claim 2, characterized in that: The hot side inlet and outlet of the heat exchanger 1 (5) are respectively installed with valve 1 (101) and valve 2 (102) for controlling the air on and off.

4. The integrated system of RV air conditioner, refrigerator and hot water based on air expansion refrigeration as claimed in claim 3, characterized in that: The air expansion refrigeration system comprises a heat exchanger 2 (7), the hot side of the heat exchanger 2 (7) being connected in series between the outlet of the compressor (1) and the air-cooled heat exchanger (2); the cold side inlet of the heat exchanger 2 (7) is connected in sequence to a valve 3 (103) and the air outlet of the fan 1 (6) through a pipeline; the cold side outlet of the heat exchanger 2 (7) is connected in sequence to a valve 4 (104) and the air supply outlet of the interior space of the RV through a pipeline.

5. The integrated system of RV air conditioner, refrigerator and hot water based on air expansion refrigeration as claimed in claim 3, characterized in that: The air expansion refrigeration system comprises a heat exchanger three (8), the hot side of the heat exchanger three (8) being connected in series between the outlet of the compressor (1) and the air-cooled heat exchanger (2); the cold side inlet of the heat exchanger three (8) is connected to a water pump (9) and a water tank (10) in sequence through a water pipe; and the cold side outlet of the heat exchanger three (8) is connected to a washing area of ​​a motorhome through a water pipe.

6. The integrated system of RV air conditioner, refrigerator and hot water based on air expansion refrigeration as claimed in claim 3, characterized in that: The air expansion refrigeration system comprises a heat exchanger four (11), the cold side of the heat exchanger four (11) is connected in series between the outlet of the expander (4) and the inlet of the compressor (1); the hot side inlet of the heat exchanger four (11) is connected in sequence to the air outlet of the ventilator two (13) and the RV refrigerator (12); the hot side outlet of the heat exchanger four (11) is connected to the air inlet of the RV refrigerator (12).

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