Four-pipe cold and hot water machine

Abstract

The utility model relates to the technical field of refrigeration and heating, in particular to a four-pipe cold and hot water machine which comprises a compression module, a four-way reversing valve, a gas heat exchange module, a cold liquid heat exchange module, a hot liquid heat exchange module, a liquid storage device, a refrigeration electronic valve, a heat pump electronic valve and a defrosting switch valve, the four-way reversing valve is provided with an end D, an end E, an end S and an end C, and the end S is located between the end E and the end C; the D end is connected to the compression module, the E end is connected to the hot liquid heat exchange module, the S end is connected to the cold liquid heat exchange module, and the C end is connected to the gas heat exchange module; the liquid storage device is communicated with the hot liquid heat exchange module, the refrigeration electronic valve is arranged between the liquid storage device and the cold liquid heat exchange module, the heat pump electronic valve is arranged between the liquid storage device and the gas heat exchange module, and the defrosting switch valve is arranged between the cold and hot heat exchange module and the hot liquid heat exchange module. According to the utility model, the communication relation among the gas heat exchange module, the cold liquid heat exchange module, the hot liquid heat exchange module and the liquid storage device is adjusted, so that the functions are more diversified.

Description

Technical Field

[0001] The utility model relates to the technical field of refrigeration and heating, in particular to a four-tube refrigeration and water heater. Background Art

[0002] A hot and cold water machine is a device that can cool or heat water as needed and is widely used. However, existing hot and cold water machines can only achieve normal heating and cooling of water, and can only handle one water treatment method at a time, resulting in a single function. Summary of the Invention

[0003] The utility model aims to solve the problems in the prior art and provides a four-tube cooling and hot water machine, which realizes multiple functions by optimizing the structure.

[0004] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0005] The utility model provides a four-pipe cooling and hot water machine, comprising a compression module, a four-way reversing valve, a gas heat exchange module, a cold liquid heat exchange module, a hot liquid heat exchange module, a liquid reservoir, a refrigeration electronic valve, a heat pump electronic valve and a defrost switch valve, wherein one end of the four-way reversing valve is provided with a D end, and the other end of the four-way reversing valve is provided with an E end, an S end and a C end, with the S end being located between the E end and the C end; the D end is connected to the compression module, the E end is connected to the hot liquid heat exchange module, the S end and the cold liquid heat exchange module are both connected to the compression module, and the C end is connected to the gas heat exchange module; the liquid reservoir is connected to the hot liquid heat exchange module, the refrigeration electronic valve is arranged between the liquid reservoir and the cold liquid heat exchange module, the heat pump electronic valve is arranged between the liquid reservoir and the gas heat exchange module, and the defrost switch valve is arranged between the cold and hot heat exchange module and the hot liquid heat exchange module;

[0006] The four-way reversing valve has a first state and a second state. When in the first state, the D end is connected to the E end and the S end is connected to the C end; when in the second state, the D end is connected to the C end and the E end is connected to the S end.

[0007] Furthermore, the liquid storage device includes a container having a first ventilation port and a second ventilation port. The first ventilation port is connected to the gas heat exchange module and the hot liquid heat exchange module. The second ventilation port is connected to the cold liquid heat exchange module through a refrigeration electronic valve. The second ventilation port is connected to the gas heat exchange module through a heat pump electronic valve.

[0008] Furthermore, a one-way valve is provided between the first ventilation port and the hot liquid heat exchange module, and between the first ventilation port and the gas heat exchange module, respectively. The one-way valve conducts one-way flow from the hot liquid heat exchange module / gas heat exchange module to the first ventilation port.

[0009] Furthermore, the liquid reservoir further includes a drying filter, one end of the drying filter is connected to the second ventilation port, the other end of the drying filter is connected to a tee, and the other two ports of the tee are respectively connected to the refrigeration electronic valve and the heat pump electronic valve;

[0010] One end of the defrost switch valve is connected to the hot liquid heat exchange module, and the other end of the defrost switch valve is connected to between the refrigeration electronic valve and the three-way component.

[0011] Furthermore, the compression module includes a compressor, an oil separator and a gas-liquid separator. The oil separator is connected to the D end and one end of the compressor respectively, one end of the gas-liquid separator is connected to the other end of the compressor, and the other end of the gas-liquid separator is connected to the S end and the cold liquid heat exchange module.

[0012] Furthermore, a one-way valve is provided between the S end and the gas-liquid separator, and between the cold liquid heat exchanger and the gas-liquid separator, respectively. The one-way valve conducts one-way from the S end / cold liquid heat exchange module to the gas-liquid separator.

[0013] Furthermore, the compression module also includes a pressure reducing valve having a high-pressure end and a low-pressure end, the high-pressure end is connected to the oil separator, and the low-pressure end is connected to the gas-liquid separator.

[0014] Furthermore, the gas heat exchange module is an air heat exchanger.

[0015] Furthermore, the hot liquid heat exchange module is a hot water heat exchanger.

[0016] Furthermore, the cold liquid heat exchange module is a cold water heat exchanger.

[0017] Beneficial effects of the present invention: The present invention adjusts the connectivity between the gas heat exchange module, the cold liquid heat exchange module, the hot liquid heat exchange module and the liquid storage device by turning on and off the four-way valve, the refrigeration electronic valve, the heat pump electronic valve and the defrost switch valve, thereby making the functions more diverse. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the present utility model.

[0019] Figure numerals: 1—compression module, 2—four-way reversing valve, 3—gas heat exchange module, 4—cold liquid heat exchange module, 5—hot liquid heat exchange module, 6—liquid reservoir, 7—one-way valve, 8—refrigeration electronic valve, 9—heat pump electronic valve, 10—defrost switch valve, 11—compressor, 12—oil separator, 13—gas-liquid separator, 14—pressure reducing valve, 21—D end, 22—E end, 23—S end, 24—C end, 61—container, 62—drying filter, 63—first ventilation port, 64—second ventilation port. DETAILED DESCRIPTION

[0020] In order to facilitate the understanding of those skilled in the art, the present invention is further described below in conjunction with the embodiments and drawings. The contents mentioned in the embodiments are not intended to limit the present invention. The present invention is described in detail below in conjunction with the drawings.

[0021] like Figure 1 As shown, the utility model provides a four-pipe cooling and hot water machine, including a compression module 1, a four-way reversing valve 2, a gas heat exchange module 3, a cold liquid heat exchange module 4, a hot liquid heat exchange module 5, a liquid reservoir 6, a refrigeration electronic valve 8, a heat pump electronic valve 9 and a defrost switch valve 10. One end of the four-way reversing valve 2 is provided with a D end 21, and the other end of the four-way reversing valve 2 is provided with an E end 22, an S end 23 and a C end 24, and the S end 23 is located between the E end 22 and the C end 24; the D end 2 1 is connected to the compression module 1, the E end 22 is connected to the hot liquid heat exchange module 5, the S end 23 and the cold liquid heat exchange module 4 are both connected to the compression module 1, and the C end 24 is connected to the gas heat exchange module 3; the liquid reservoir 6 is in communication with the hot liquid heat exchange module 5, the refrigeration electronic valve 8 is provided between the liquid reservoir 6 and the cold liquid heat exchange module 4, the heat pump electronic valve 9 is provided between the liquid reservoir 6 and the gas heat exchange module 3, and the defrost switch valve 10 is provided between the cold and hot heat exchange module and the hot liquid heat exchange module 5;

[0022] Specifically, the four-way reversing valve 2 has a first state and a second state. When in the first state (i.e., the power-off state), the D end 21 is connected to the E end 22 and the S end 23 is connected to the C end 24; when in the second state (i.e., the power-on state), the D end 21 is connected to the C end 24 and the E end 22 is connected to the S end 23.

[0023] The utility model has four specific modes, namely, cooling, cooling and hot water production, hot water production, and defrosting. The specific principles of the four modes are as follows:

[0024] 1. When cooling is required, the four-way reversing valve 2 is powered off, the defrost switch valve 10 is powered off, the refrigeration electronic valve 8 is powered on, and the heat pump electronic valve 9 is powered off. At this time, the flow path of the heat exchange medium (preferably gas) is compression module 1-gas heat exchange module 3-liquid reservoir 6-cold liquid heat exchange module 4-compression module 1, that is, the compression module 1 does not work, and the gas is cooled by heat exchange with the outside air through the gas heat exchange module 3, and then reaches the cold liquid heat exchange module 4 after passing through the liquid reservoir 6 for heat exchange, realizing heat absorption of the liquid in the cold liquid heat exchange module 4, thereby achieving a cooling effect.

[0025] 2. When cooling and hot water production are required, the four-way reversing valve 2 is energized, the defrost switch valve 10 is de-energized, the refrigeration electronic valve 8 is energized, and the heat pump electronic valve 9 is de-energized. At this time, the flow path of the heat exchange medium is compression module 1-hot liquid heat exchange module 5-liquid reservoir 6-cold liquid heat exchange module 4-compression module 1, that is, after the heat exchange medium is compressed to a high temperature and high pressure state by the compression module 1, it enters the hot liquid heat exchange module 5 for heat exchange, thereby heating the liquid in the hot liquid heat exchange module 5, and then the heat exchange medium enters the cold liquid heat exchange module 4 after passing through the liquid reservoir 6, thereby absorbing heat and cooling the liquid in the cold liquid heat exchange module 4.

[0026] 3. When hot water is needed, the four-way reversing valve 2 is energized, the defrost switch valve 10 is de-energized, the refrigeration electronic valve 8 is de-energized, and the heat pump electronic valve 9 is energized. The flow path of the heat exchange medium is: compression module 1-hot liquid heat exchange module 5-liquid reservoir 6-gas heat exchange module 3-compression module 1, and compression module 1-hot liquid heat exchange module 5-liquid reservoir 6-liquid reservoir 6, that is, after the heat exchange medium is compressed to a high temperature and high pressure state by the compression module 1, it enters the hot liquid heat exchange module 5 to release heat to produce hot water. Then the heat exchange medium is divided into two paths: one is transmitted to the liquid reservoir 6 for heat exchange and cooling with the liquid in the liquid reservoir 6, and the other is transmitted to the gas heat exchange module 3 for secondary cooling and then transmitted to the compression module 1, thereby realizing the production of hot water.

[0027] 4. When defrosting is required, the four-way reversing valve 2 is powered off, the defrost switch valve 10 is powered on, the refrigeration electronic valve is powered off, and the heat pump electronic valve 9 is powered off. At this time, the flow path of the heat exchange medium is: compression module 1-gas heat exchange module 3-liquid reservoir 6-defrost switch valve 10-hot liquid heat exchange module 5-compression module 1, that is, the heat exchange medium is compressed by the compression module 1 and then exchanges heat with the external gas, so that the external gas temperature is increased, achieving the defrosting effect.

[0028] The utility model has four working modes and can realize cooling and hot water production at the same time. Compared with the existing hot and cold water machines, it has more and more flexible functions.

[0029] Specifically, the defrost switch valve 10 is a solenoid valve, and the refrigeration electronic valve 8 and the heat pump electronic valve 9 are both electronic expansion valves.

[0030] In this embodiment, the liquid reservoir 6 includes a container 61, which has a first ventilation port 63 and a second ventilation port 64. The first ventilation port 63 is connected to the gas heat exchange module 3 and the hot liquid heat exchange module 5, and the second ventilation port 64 is connected to the cold liquid heat exchange module 4 through the refrigeration electronic valve 8. The second ventilation port 64 is connected to the gas heat exchange module 3 through the heat pump electronic valve 9.

[0031] That is, the heat exchange medium flows in the container 61 , enters the container 61 through the first ventilation port 63 / the second ventilation port 64 , and then necessarily flows out from the second ventilation port 64 / the first ventilation port 63 .

[0032] Specifically, a one-way valve 7 is respectively provided between the first ventilation port 63 and the hot liquid heat exchange module 5 and between the first ventilation port 63 and the gas heat exchange module 3. The one-way valve 7 unidirectionally conducts from the hot liquid heat exchange module 5 / the gas heat exchange module 3 to the first ventilation port 63.

[0033] By setting the one-way valve 7, the heat exchange medium will not flow back, thereby ensuring that the flow path of the heat exchange medium is carried out as required to ensure the heat exchange effect.

[0034] Specifically, the liquid reservoir 6 further includes a drying filter 62, one end of the drying filter 62 is connected to the second ventilation port 64, and the other end of the drying filter 62 is connected to a tee, and the other two ports of the tee are respectively connected to the refrigeration electronic valve 8 and the heat pump electronic valve 9;

[0035] One end of the defrost switch valve 10 is connected to the hot liquid heat exchange module 5, and the other end of the defrost switch valve 10 is connected to between the refrigeration electronic valve 8 and the three-way component.

[0036] The drying filter 62 is used to absorb and dry the heat exchange medium to ensure that the heat exchange medium is not mixed with gaseous water, thereby ensuring that local water accumulation does not occur inside the utility model to ensure safety.

[0037] In this embodiment, the compression module 1 includes a compressor 11, an oil separator 12 and a gas-liquid separator 13. The oil separator 12 is respectively connected to the D end 21 and one end of the compressor 11. One end of the gas-liquid separator 13 is connected to the other end of the compressor 11. The other end of the gas-liquid separator 13 is connected to the S end 23 and the cold liquid heat exchange module 4.

[0038] That is, when the heat exchange medium needs to be heated, the compressor 11 compresses the heat exchange medium so that the heat exchange medium is converted from a low-temperature and low-pressure state to a high-temperature and high-pressure state. Since gas is easier to compress than liquid, the present invention uses gas as the heat exchange medium; and the oil separator 12 and the gas-liquid separator 13 both filter the oil, liquid impurities, etc. mixed in the flow of the heat exchange medium to ensure the purity of the heat exchange medium.

[0039] Specifically, a one-way valve 7 is respectively provided between the S end 23 and the gas-liquid separator 13, and between the cold liquid heat exchanger and the gas-liquid separator 13. The one-way valve 7 is unidirectionally conducted from the S end 23 / cold liquid heat exchange module 4 to the gas-liquid separator 13, thereby preventing the heat exchange medium from flowing back when flowing in a predetermined path.

[0040] Specifically, the compression module 1 further includes a pressure reducing valve 14 , which has a high-pressure end and a low-pressure end. The high-pressure end is connected to the oil separator 12 , and the low-pressure end is connected to the gas-liquid separator 13 .

[0041] That is, when the compressor 11 does not need to work, the flow of the heat exchange medium can be achieved through the pressure reducing valve 14, making the utility model more flexible.

[0042] In this embodiment, the gas heat exchange module 3 is an air heat exchanger, the hot liquid heat exchange module 5 is a hot water heat exchanger, and the cold liquid heat exchange module 4 is a cold water heat exchanger.

[0043] The above description is only a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Although the present invention is disclosed as a preferred embodiment as above, it is not intended to limit the present invention. Any technician familiar with the profession can make some changes or modifications to equivalent embodiments of the above-disclosed technical contents without departing from the scope of the technical solution of the present invention. However, any simple modifications, equivalent changes and modifications made to the above embodiments according to the technology of the present invention, which do not depart from the content of the technical solution of the present invention, are within the scope of the technical solution of the present invention.

Claims

1. A four-tube cooling and hot water machine, characterized by: It includes a compression module, a four-way reversing valve, a gas heat exchange module, a cold liquid heat exchange module, a hot liquid heat exchange module, a liquid reservoir, a refrigeration electronic valve, a heat pump electronic valve and a defrost switch valve. One end of the four-way reversing valve is provided with a D end, and the other end of the four-way reversing valve is provided with an E end, an S end and a C end, and the S end is located between the E end and the C end; the D end is connected to the compression module, the E end is connected to the hot liquid heat exchange module, the S end and the cold liquid heat exchange module are both connected to the compression module, and the C end is connected to the gas heat exchange module; the liquid reservoir is connected to the hot liquid heat exchange module, the refrigeration electronic valve is arranged between the liquid reservoir and the cold liquid heat exchange module, the heat pump electronic valve is arranged between the liquid reservoir and the gas heat exchange module, and the defrost switch valve is arranged between the cold and hot heat exchange module and the hot liquid heat exchange module; The four-way reversing valve has a first state and a second state. When in the first state, the D end is connected to the E end and the S end is connected to the C end; when in the second state, the D end is connected to the C end and the E end is connected to the S end.

2. The four-tube cooling and hot water machine according to claim 1, characterized in that: The liquid storage device includes a container having a first ventilation port and a second ventilation port. The first ventilation port is connected to the gas heat exchange module and the hot liquid heat exchange module. The second ventilation port is connected to the cold liquid heat exchange module via a refrigeration electronic valve. The second ventilation port is connected to the gas heat exchange module via a heat pump electronic valve.

3. The four-tube cooling and hot water machine according to claim 2, characterized in that: One-way valves are respectively provided between the first ventilation port and the hot liquid heat exchange module, and between the first ventilation port and the gas heat exchange module. The one-way valves conduct one-way flow from the hot liquid heat exchange module / the gas heat exchange module to the first ventilation port.

4. The four-tube cooling and hot water machine according to claim 2, characterized in that: The liquid reservoir further includes a drying filter, one end of which is connected to the second ventilation port, and the other end of which is connected to a tee, the other two ports of which are connected to the refrigeration electronic valve and the heat pump electronic valve respectively; One end of the defrost switch valve is connected to the hot liquid heat exchange module, and the other end of the defrost switch valve is connected to between the refrigeration electronic valve and the three-way component.

5. The four-tube cooling and hot water machine according to claim 1, characterized in that: The compression module includes a compressor, an oil separator and a gas-liquid separator. The oil separator is connected to the D end and one end of the compressor respectively. One end of the gas-liquid separator is connected to the other end of the compressor. The other end of the gas-liquid separator is connected to the S end and the cold liquid heat exchange module.

6. The four-tube cooling and hot water machine according to claim 5, characterized in that: One-way valves are respectively provided between the S end and the gas-liquid separator, and between the cold liquid heat exchanger and the gas-liquid separator. The one-way valves conduct one-way from the S end / cold liquid heat exchange module to the gas-liquid separator.

7. The four-tube cooling and hot water machine according to claim 5, characterized in that: The compression module further includes a pressure reducing valve having a high-pressure end and a low-pressure end, wherein the high-pressure end is connected to the oil separator, and the low-pressure end is connected to the gas-liquid separator.

8. The four-tube cooling and hot water machine according to claim 1, characterized in that: The gas heat exchange module is an air heat exchanger.

9. The four-tube cooling and hot water machine according to claim 1, characterized in that: The hot liquid heat exchange module is a hot water heat exchanger.

10. The four-tube cooling and hot water machine according to claim 1, characterized in that: The cold liquid heat exchange module is a cold water heat exchanger.

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