A cold air conditioning hot water system

Abstract

The invention discloses a cold air conditioning hot water system, wherein the compression pump has a first port and a second port, when the compression pump rotates forward, the refrigerant flows forward, and when the compression pump rotates reversely, the refrigerant flows reversely; the first heat exchanger has a third port and a fourth port; the second heat exchanger has a fifth port and a sixth port, the fifth port is connected in parallel with a first valve and a second valve, and the sixth port is connected in parallel with a third valve and a fourth valve; the third heat exchanger is used to heat water in a water storage tank, and the third heat exchanger has a seventh port and an eighth port; the first port is connected to the second valve and the fourth port through a three-way pipe, the second port is connected to the seventh port and the third valve through a three-way pipe, the third port is connected to the first valve and the fifth valve through a three-way pipe, and the eighth port is connected to the fifth valve and the fourth valve through a three-way pipe; the pipeline system connects the first heat exchanger, the second heat exchanger, the third heat exchanger and the compression pump. The refrigerant is switched in the compression pump, and there is no need for a four-way valve to switch the flow direction of the refrigerant, and the pipeline structure of the invention is simple.

Description

Technical Field

[0001] The invention relates to a system in the field of air conditioning, refrigeration and heating research, and in particular to a cold air conditioning and hot water system integrating an air conditioner and a water heater. Background Art

[0002] When the current air conditioner is cooling, the indoor unit generates cold air to provide a cool indoor environment; however, the outdoor unit also generates a lot of heat, which comes from the indoor heat energy. The heat generated by the outdoor unit is wasted. In addition to the waste of energy, it also makes the surrounding environment temperature rise and become hotter, which is not conducive to energy saving and environmental protection.

[0003] In addition, in the prior art, a four-way valve is generally used to change the flow direction of the refrigerant, and the pipeline structure is complicated. Summary of the invention

[0004] The object of the present invention is to solve at least one of the technical problems existing in the prior art and to provide a cold air conditioning and hot water system with a simple piping structure.

[0005] According to a first aspect of the present invention, there is provided a cooling air conditioning hot water system, comprising:

[0006] Fifth valve;

[0007] A compression pump, wherein the compression pump has a first port and a second port. When the compression pump rotates forward, the refrigerant flows from the first port through the interior of the compression pump to the second port. When the compression pump rotates reversely, the refrigerant flows from the second port through the interior of the compression pump to the first port.

[0008] a first heat exchanger, the first heat exchanger having a third port and a fourth port;

[0009] a second heat exchanger, wherein the second heat exchanger has a fifth port and a sixth port, the fifth port is connected in parallel with a first valve and a second valve, and the sixth port is connected in parallel with a third valve and a fourth valve;

[0010] a third heat exchanger, the third heat exchanger being used to heat water in the water storage, the third heat exchanger having a seventh port and an eighth port; the first port being connected to the second valve and the fourth port via a three-way pipe, the second port being connected to the seventh port and the third valve via a three-way pipe, the third port being connected to the first valve and the fifth valve via a three-way pipe, and the eighth port being connected to the fifth valve and the fourth valve via a three-way pipe; and

[0011] A pipeline system connects the first heat exchanger, the second heat exchanger, the third heat exchanger and the compression pump. The pipeline system comprises a return pipeline and a delivery pipeline. The diameter of the return pipeline is smaller than the diameter of the delivery pipeline.

[0012] The above-mentioned cold air conditioning and hot water system has at least the following beneficial effects: the first valve, the second valve, the third valve, and the fourth valve are closed, and the fifth valve is opened, the refrigerant flows from the first port to the second port, and the first heat exchanger, the compression pump and the third heat exchanger constitute the air-to-water heater working mode; the second valve, the fourth valve and the fifth valve are closed, the first valve and the third valve are opened, the refrigerant flows along the second port to the first port, and the first heat exchanger, the compression pump and the second heat exchanger constitute the air conditioner working mode; the first valve, the third valve and the fifth valve are closed, the fourth valve and the second valve are opened, the refrigerant flows from the first port to the second port, and the compression pump, the third heat exchanger and the second heat exchanger constitute the cold air and hot water integrated machine working mode; in the application of the present invention, the connection of the pipeline adopts a three-way pipe connection, and the direction of the refrigerant is switched in the compression pump, and there is no need for a four-way valve to switch the flow direction of the refrigerant. The pipeline structure of the present invention is simple.

[0013] According to the cold air conditioning hot water system described in the embodiment of the first aspect of the present invention, the delivery pipeline includes a first delivery pipe connecting the first port and the fourth port, a second delivery pipe connecting the fourth port and the fifth port, a third delivery pipe connecting the second port and the seventh port, and a fourth delivery pipe connecting the seventh port and the sixth port; the return pipeline includes a first return pipe connecting the eighth port and the third pipe, a second return pipe connecting the third port and the fifth port, and a third return pipe connecting the sixth port and the eighth port.

[0014] In the working mode of the air-energy water heater, under the action of the compression pump, the refrigerant in the first heat exchanger is quickly pumped away to form a low pressure, and the refrigerant gathers in the third heat exchanger. Since the diameter of the first return pipe is smaller than the diameter of the first delivery pipe and / or the third delivery pipe, the refrigerant cannot flow back to the first heat exchanger quickly, and is compressed into a liquid in the third heat exchanger, and is vaporized into a gas in the first heat exchanger. That is, the refrigerant vaporizes and absorbs heat in the first heat exchanger, and liquefies and releases heat in the third heat exchanger, and the released heat is stored in hot water.

[0015] In the working mode of the air conditioner, the diameters of the first delivery pipe, the third delivery pipe and the fourth delivery pipe are larger than the diameter of the second return pipe. The compression pump quickly compresses the refrigerant of the second heat exchanger into the first heat exchanger. The diameters of the first valve and the second return pipe are smaller, and the refrigerant cannot flow back to the second heat exchanger immediately. Therefore, the pressure of the first heat exchanger increases, and the pressure of the second heat exchanger decreases. The refrigerant liquefies and releases heat in the first heat exchanger, and vaporizes and absorbs heat in the second heat exchanger.

[0016] In the air conditioning and water heating integrated machine working mode, the compression pump quickly compresses the refrigerant in the second heat exchanger into the third heat exchanger. However, since the diameters of the fourth valve and the third return pipe are much smaller than the diameters of the second valve, the third delivery pipe and the second delivery pipe, the refrigerant in the third heat exchanger cannot quickly flow back to the second heat exchanger. The pressure in the third heat exchanger increases, and the pressure in the second heat exchanger decreases. The refrigerant liquefies and releases heat in the third heat exchanger, and vaporizes and absorbs heat in the second heat exchanger.

[0017] According to the cold air conditioning and hot water system described in the embodiment of the first aspect of the present invention, the overlapping part of the delivery pipeline and the return pipeline adopts the diameter of the delivery pipeline. The first valve and the second valve are connected in parallel to the fifth port, the fifth port adopts the diameter of the delivery pipeline, and the pipeline between the first valve and the fifth port is the diameter of the return pipeline, so that the refrigerant can be liquefied in the first heat exchanger in the air conditioner working mode; the third valve and the fourth valve are connected in parallel to the sixth port, the sixth port adopts the diameter of the delivery pipeline, and the diameter of the return pipeline is used between the fourth valve and the fifth port, so that the refrigerant can be liquefied in the third heat exchanger in the cold air and hot water integrated machine working mode.

[0018] According to the cold air conditioning hot water system described in the embodiment of the first aspect of the present invention, the shell of the water storage tank is provided with a heat preservation layer, and the water storage tank is provided with a water inlet pipe and a water outlet pipe. The heat preservation layer can greatly reduce the loss of hot water temperature, cold water enters the water storage tank through the water inlet pipe for heating, and the water outlet pipe outputs hot water.

[0019] According to the cooling air conditioning and hot water system described in the embodiment of the first aspect of the present invention, the compression pump is a bidirectional gear pump. A bidirectional gear pump is a pump that transports liquid by relying on the change in the volume of the working space generated by two or more gears sealed in a housing during the mutual meshing process. The pump can operate in both forward and reverse directions, and the pump shaft can supply the same amount of oil in the same direction when rotating in both forward and reverse directions.

[0020] According to the cold air conditioning and hot water system described in the embodiment of the first aspect of the present invention, the number of the first heat exchangers is at least two, and the first heat exchangers are connected in parallel or in series.

[0021] According to the cold air conditioning and hot water system described in the embodiment of the first aspect of the present invention, the number of the second heat exchangers is at least two, and the second heat exchangers are connected in parallel or in series.

[0022] According to the cold air conditioning and hot water system described in the embodiment of the first aspect of the present invention, the number of the third heat exchangers is at least two, and the third heat exchangers are connected in parallel or in series.

[0023] According to the first aspect of the present invention, the cold air conditioning and hot water system described in the embodiment further includes a controller, which is used to control the working states of the first valve, the second valve, the third valve, the fourth valve, the fifth valve and the compression pump. The controller is used to control the corresponding valve to open or close according to the preset water temperature threshold and the indoor temperature, stop or start the compression pump as needed, or change the rotation direction of the compression pump, thereby changing the flow direction of the refrigerant.

[0024] According to the cold air conditioning and hot water system described in the embodiment of the first aspect of the present invention, the diameter of the return pipeline is D1, the diameter of the delivery pipeline is D2, and D2 = 2D1. The diameter of the delivery pipeline is equal to 2 times the diameter of the return pipeline, and the refrigerant flow rate per unit area in the delivery pipeline is equal to 4 times the refrigerant flow rate per unit area in the return pipeline, and the refrigerant is compressed or / and vaporized into a gaseous state by using the flow difference. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly describes the drawings required for use in the description of the embodiments. Obviously, the drawings described are only part of the embodiments of the present invention, not all of the embodiments, and those skilled in the art can also obtain other design solutions and drawings based on these drawings without creative work.

[0026] Figure 1 is a schematic structural diagram of an embodiment of the present invention;

[0027] Figure 2 It is a structural schematic diagram of the working mode of the air energy water heater in an embodiment of the present invention;

[0028] Figure 3 is a structural schematic diagram of the working mode of the air conditioner in an embodiment of the present invention;

[0029] Figure 4 It is a structural schematic diagram of the working mode of the air conditioning and hot water integrated machine in an embodiment of the present invention. DETAILED DESCRIPTION

[0030] This section will describe in detail the specific embodiments of the present invention. The preferred embodiments of the present invention are shown in the accompanying drawings. The purpose of the accompanying drawings is to supplement the description of the text part of the specification with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present invention, but it cannot be understood as a limitation on the scope of protection of the present invention.

[0031] In the description of the present invention, it should be understood that descriptions involving orientations, such as up, down, front, back, left, right, etc., and orientations or positional relationships indicated are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0032] In the description of the present invention, "several" means one or more, "more" means more than two, "greater than", "less than", "exceed" etc. are understood as not including the number itself, and "above", "below", "within" etc. are understood as including the number itself. If there is a description of "first" or "second", it is only used for the purpose of distinguishing the technical features, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0033] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0034] Reference Figure 1 , a cold air conditioning hot water system, comprising a fifth valve 5, a compression pump 7, a first heat exchanger 6, a second heat exchanger 9, a third heat exchanger 8 and a piping system; the compression pump 7 has a first port 41 and a second port 42, when the compression pump 7 rotates forward, the refrigerant flows from the first port 41 through the inside of the compression pump 7 to the second port 42, when the compression pump 7 rotates reversely, the refrigerant flows from the second port 42 through the inside of the compression pump 7 to the first port 41; the first heat exchanger 6 has a third port 43 and a fourth port 44; the second heat exchanger 9 has a fifth port 45 and a sixth port 46, the fifth port 45 is connected in parallel with the first valve 1 and the second valve 2, the sixth port 46 is connected in parallel with the third valve 3 and The fourth valve 4; the third heat exchanger 8 is used to heat the water in the water storage tank, and the third heat exchanger 8 has a seventh port 47 and an eighth port 48; the first port 41 is connected to the second valve 2 and the fourth port 44 through a three-way pipe, the second port 42 is connected to the seventh port 47 and the third valve 3 through a three-way pipe, the third port 43 is connected to the first valve 1 and the fifth valve 5 through a three-way pipe, and the eighth port 48 is connected to the fifth valve 5 and the fourth valve 4 through a three-way pipe; the piping system connects the first heat exchanger 6, the second heat exchanger 9, the third heat exchanger 8 and the compression pump 7, and the piping system has a reflux pipeline and a delivery pipeline, and the diameter of the reflux pipeline is smaller than the diameter of the delivery pipeline. Figure 1 The diameter of the pipeline shown by the medium thick line is larger than the diameter of the pipeline shown by the thin line in the figure. The controller is used to control the working status of the first valve 1, the second valve 2, the third valve 3, the fourth valve 4, the fifth valve 5 and the compression pump 7. The controller is used to control the opening or closing of the corresponding valve according to the preset water temperature threshold and the indoor temperature, stop or start the compression pump as needed, or change the rotation direction of the compression pump, thereby changing the flow direction of the refrigerant. When using the air conditioner, the refrigerant is used to absorb the heat in the room to lower the indoor temperature and complete the refrigeration. At the same time, the absorbed heat is released to heat the water in the water storage tank.

[0035] Preferably, the diameter of the return pipeline is D1, the diameter of the delivery pipeline is D2, and D2 = 2D1. The diameter of the delivery pipeline is equal to twice the diameter of the return pipeline, and the refrigerant flow rate per unit area in the delivery pipeline is equal to four times the refrigerant flow rate per unit area in the return pipeline. The flow difference is used to realize the compression and / or vaporization of the refrigerant into a gaseous state.

[0036] The first heat exchanger 6 is installed in the outdoor unit, the second heat exchanger 9 is installed in the indoor unit, and the third heat exchanger 8 is installed in the water storage tank.

[0037] The delivery pipeline includes a first delivery pipe 11 connecting the first port 41 and the fourth port 44, a second delivery pipe 12 connecting the fourth port 44 and the fifth port 45, a third delivery pipe 13 connecting the second port 42 and the seventh port 47, and a fourth delivery pipe 14 connecting the seventh port 47 and the sixth port 46; the return pipeline includes a first return pipe 21 connecting the eighth port 48 and the third pipe, a second return pipe 22 connecting the third port 43 and the fifth port 45, and a third return pipe 23 connecting the sixth port 46 and the eighth port 48. That is, the diameters of the first delivery pipe 11, the second delivery pipe 12, the third delivery pipe 13 and the fourth delivery pipe 14 are larger than the diameters of the first return pipe 21, the second return pipe 22 and the third return pipe 23. The first valve 1 is installed in the second return pipe 22, the second valve 2 is installed in the second delivery pipe 12, the third valve 3 is installed in the fourth delivery pipe 14, the fourth valve 4 is installed in the third return pipe 23, and the fifth valve 5 is installed in the first return pipe 21.

[0038] like Figure 2 As shown, the controller closes the first valve 1, the second valve 2, the third valve 3, and the fourth valve 4, and opens the fifth valve 5. The controller controls the compression pump 7 to rotate forward, and the flow direction of the refrigerant is as follows: Figure 2 As shown by the arrow in the middle, Figure 2 The diameter of the pipeline indicated by the medium thick line is larger than the diameter of the pipeline indicated by the thin line in the figure. The refrigerant flows from the first port 41 to the second port 42. Under the action of the compression pump 7, the refrigerant in the first heat exchanger 6 is quickly pumped away to form a low pressure. The refrigerant gathers in the third heat exchanger 8. Since the diameter of the first return pipe 21 is smaller than the diameter of the first delivery pipe 11 and / or the third delivery pipe 13, the refrigerant cannot flow back to the first heat exchanger 6 quickly, and is retained in the third heat exchanger 8 and compressed into a liquid state, and is vaporized into a gas state in the first heat exchanger 6, that is, the refrigerant vaporizes and absorbs heat in the first heat exchanger 6, and liquefies and releases heat in the third heat exchanger 8, and the released heat is stored in hot water.

[0039] like Figure 3 As shown, the controller closes the second valve 2, the fourth valve 4 and the fifth valve 5, and opens the first valve 1 and the third valve 3. The controller controls the compression pump 7 to reverse, and the flow direction of the refrigerant is as follows: Figure 3 As shown by the arrow in the middle, Figure 3The diameter of the pipeline shown by the medium thick line is larger than the diameter of the pipeline shown by the thin line in the figure. The refrigerant flows along the second port 42 to the first port 41. The diameters of the first delivery pipe 11, the third delivery pipe 13 and the fourth delivery pipe 14 are larger than the diameter of the second return pipe 22. The compression pump 7 quickly compresses the refrigerant of the second heat exchanger 9 into the first heat exchanger 6. The diameters of the first valve 1 and the second return pipe 22 are small, and the refrigerant cannot immediately flow back to the second heat exchanger 9. Therefore, the pressure of the first heat exchanger 6 increases, and the pressure of the second heat exchanger 9 decreases. The refrigerant liquefies and releases heat in the first heat exchanger 6, and vaporizes and absorbs heat in the second heat exchanger 9.

[0040] like Figure 4 As shown, the controller closes the first valve 1, the third valve 3 and the fifth valve 5, and opens the fourth valve 4 and the second valve 2. The controller rotates the compressor forward, and the flow direction of the refrigerant is as follows: Figure 4 As shown by the arrow in the middle, Figure 4 The diameter of the pipeline indicated by the medium thick line is larger than the diameter of the pipeline indicated by the thin line in the figure. The refrigerant flows from the first port 41 to the second port 42. The compression pump 7 quickly compresses the refrigerant in the second heat exchanger 9 into the third heat exchanger 8. However, since the diameters of the fourth valve 4 and the third return pipe 23 are much smaller than the diameters of the second valve 2, the third delivery pipe 13 and the second delivery pipe 12, the refrigerant in the third heat exchanger 8 cannot quickly flow back to the second heat exchanger 9. The pressure in the third heat exchanger 8 increases, and the pressure in the second heat exchanger 9 decreases. The refrigerant liquefies and releases heat in the third heat exchanger 8, and vaporizes and absorbs heat in the second heat exchanger 9.

[0041] In the above embodiment, only one first heat exchanger 6, one second heat exchanger 9, one third heat exchanger 8 and one compression pump 7 are provided. However, those skilled in the art can set multiple first heat exchangers 6, multiple second heat exchangers 9, multiple third heat exchangers 8 and multiple compression pumps 7 through the scheme described in the present application. Multiple first heat exchangers 6 can be connected in series or in parallel, multiple second heat exchangers 9 can be connected in series or in parallel, multiple third heat exchangers 8 can be connected in series or in parallel, and multiple compression pumps 7 can be connected in series or in parallel.

[0042] Preferably, the compression pump 7 is a bidirectional gear pump. A bidirectional gear pump is a pump that delivers liquid by relying on the change in the volume of the working space generated by two or more gears sealed in a housing during the mutual meshing process. The pump can run forward and reverse, and the pump shaft can supply the same amount of oil in the same direction when rotating forward or reverse.

[0043] Preferably, the shell of the water storage tank is provided with an insulation layer, and the water storage tank is provided with a water inlet pipe and a water outlet pipe. The insulation layer can greatly reduce the loss of hot water temperature, cold water enters the water storage tank through the water inlet pipe for heating, and the water outlet pipe outputs hot water.

[0044] The above is a specific description of the preferred implementation mode of the present invention, but the invention is not limited to the embodiments. Those skilled in the art may make various equivalent modifications or substitutions without violating the spirit of the present invention. These equivalent modifications or substitutions are all included in the scope defined by the claims of this application.

Claims

1. A cold air conditioning hot water system, characterized in that: include, Fifth valve; A compression pump, wherein the compression pump has a first port and a second port. When the compression pump rotates forward, the refrigerant flows from the first port through the interior of the compression pump to the second port. When the compression pump rotates reversely, the refrigerant flows from the second port through the interior of the compression pump to the first port. a first heat exchanger, the first heat exchanger having a third port and a fourth port; a second heat exchanger, wherein the second heat exchanger has a fifth port and a sixth port, the fifth port is connected in parallel with a first valve and a second valve, and the sixth port is connected in parallel with a third valve and a fourth valve; A third heat exchanger, the third heat exchanger is used to heat the water in the water storage, the third heat exchanger has a seventh port and an eighth port; The first port is connected to the second valve and the fourth port through a three-way pipe, the second port is connected to the seventh port and the third valve through a three-way pipe, the third port is connected to the first valve and the fifth valve through a three-way pipe, and the eighth port is connected to the fifth valve and the fourth valve through a three-way pipe; and A pipeline system, wherein the pipeline system connects the first heat exchanger, the second heat exchanger, the third heat exchanger and the compression pump, and the pipeline system comprises a return pipeline and a delivery pipeline, wherein the diameter of the return pipeline is smaller than the diameter of the delivery pipeline; The delivery pipeline includes a first delivery pipe connecting the first port and the fourth port, a second delivery pipe connecting the fourth port and the fifth port, a third delivery pipe connecting the second port and the seventh port, and a fourth delivery pipe connecting the seventh port and the sixth port; the return pipeline includes a first return pipe connecting the eighth port and the third port, a second return pipe connecting the third port and the fifth port, and a third return pipe connecting the sixth port and the eighth port. The overlapping part of the delivery pipeline and the return pipeline adopts the diameter of the delivery pipeline. The diameter of the return pipeline is D1, and the diameter of the delivery pipeline is D2, and D2=2D1.

2. The cold air conditioning and hot water system according to claim 1, characterized in that: The shell of the water storage container is provided with a heat-insulating layer, and the water storage container is provided with a water inlet pipeline and a water outlet pipeline.

3. The cold air conditioning and hot water system according to claim 1, characterized in that: The compression pump is a bidirectional gear pump.

4. The cold air conditioning and hot water system according to claim 1, characterized in that: The number of the first heat exchangers is at least two, and the first heat exchangers are connected in parallel or in series.

5. The cold air conditioning and hot water system according to claim 1, characterized in that: The number of the second heat exchangers is at least two, and the second heat exchangers are connected in parallel or in series.

6. The cold air conditioning and hot water system according to claim 1, characterized in that: The number of the third heat exchangers is at least two, and the third heat exchangers are connected in parallel or in series.

7. The cold air conditioning and hot water system according to claim 1, characterized in that: The device also includes a controller, which is used to control the working states of the first valve, the second valve, the third valve, the fourth valve, the fifth valve and the compression pump.

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