Dehumidification heat pump refrigerant device suitable for long-distance connection of outdoor condenser

Abstract

The utility model relates to the field of heat pumps, in particular to a dehumidification heat pump refrigerant device suitable for long-distance connection of an outdoor condenser. The dehumidification heat pump refrigerant device suitable for long-distance connection of the outdoor condenser comprises a compressor, an oil-water separator, a refrigerant backflow part, a refrigerant balance part, a drying filter, an evaporator and a vapor-liquid separator, wherein the compressor, the oil-water separator, the refrigerant backflow part, the refrigerant balance part, the drying filter, the evaporator and the vapor-liquid separator are communicated in sequence; the refrigerant balancing part comprises a first four-way valve, an indoor condenser, a titanium cannon, an outdoor condenser and a liquid storage device; a first outlet and a third outlet of the first four-way valve are respectively communicated with the indoor condenser and the titanium cannon; the refrigerant backflow part comprises a second four-way valve, a first outlet of the second four-way valve is communicated with the first four-way valve, and a third outlet of the second four-way valve is communicated with the outdoor condenser. The dehumidification heat pump refrigerant device suitable for long-distance connection of the outdoor condenser has the advantages that long-distance refrigerant circulation can be achieved, and it is guaranteed that a unit is in the state of enough refrigerant all the time.

Description

Technical Field

[0001] This utility model relates to the field of heat pumps, and in particular to a dehumidifying heat pump refrigerant device suitable for long-distance connection of outdoor condensers. Background Technology

[0002] Existing dehumidifier units need to be customized according to the project design plan. Dehumidifier heat pump products are generally divided into a main unit and an outdoor unit, which need to be connected by copper pipes. However, the distance between the machine room and the outdoor unit installation location is often very large. Currently, the products are generally designed with a 40-meter copper pipe connection between the outdoor unit and the main unit. If the connection distance is exceeded, the refrigerant demand will vary greatly between different operating modes, which can easily lead to unstable operation of the unit and problems such as liquid slugging, insufficient refrigerant, and abnormal exhaust temperature.

[0003] For example, patent document CN211204488U discloses a multifunctional swimming pool dehumidification heat pump system, including a pool water heat exchange circuit, an outdoor heat exchange circuit, a first indoor heat exchange circuit, a second indoor heat exchange circuit, a four-way reversing valve, and an expansion valve. The first and second ports of the four-way reversing valve are connected in series in the pool water heat exchange circuit. The two ends of the outdoor heat exchange circuit are respectively connected to the third port of the four-way reversing valve and the first port of the expansion valve. The first indoor heat exchange circuit is connected in parallel to the two ends of the outdoor heat exchange circuit. The two ends of the second indoor heat exchange circuit are respectively connected to the fourth port of the four-way reversing valve and the second port of the expansion valve.

[0004] For example, patent document CN118705690A discloses a constant temperature and dehumidification heat pump system for swimming venues, which includes a compressor for outputting refrigerant gas, outdoor heat exchangers for dissipating heat from the refrigerant gas outdoors, an indoor condenser for heating indoors, an indoor evaporator for cooling indoors, a pool water heat exchanger for exchanging heat with the pool water, a liquid receiver, and interconnected valves such as multiple four-way valves, solenoid valves, and check valves.

[0005] To address these technical issues, a dehumidifying heat pump refrigerant device suitable for long-distance outdoor condenser connections is proposed. Utility Model Content

[0006] To solve the above-mentioned technical problems, the purpose of this utility model is to provide a dehumidifying heat pump refrigerant device suitable for long-distance connection of outdoor condensers, which has the advantage of being able to circulate refrigerant over long distances and ensuring that the unit is always in a state of sufficient refrigerant.

[0007] The technical solution adopted by this utility model to solve the problem is: a dehumidifying heat pump refrigerant device suitable for long-distance connection of outdoor condensers, comprising: a compressor, an oil-water separator, a refrigerant return section, a refrigerant balance section, a dryer filter, an evaporator, and a vapor-liquid separator, wherein the compressor, oil-water separator, refrigerant return section, refrigerant balance section, dryer filter, evaporator, and vapor-liquid separator are sequentially connected; the refrigerant balance section includes a first four-way valve, an indoor condenser, a titanium cannon, an outdoor condenser, and a liquid receiver, wherein the first outlet and the third outlet of the first four-way valve are respectively connected to the indoor condenser and the titanium cannon; the refrigerant return section includes a second four-way valve, wherein the first outlet of the second four-way valve is connected to the first four-way valve, and the third outlet of the second four-way valve is connected to the outdoor condenser; the indoor condenser, the titanium cannon, and the outdoor condenser are all connected to the liquid receiver.

[0008] As a further improvement to the above technical solution, a one-way valve is provided between the indoor condenser, the titanium cannon, the outdoor condenser and the liquid receiver.

[0009] As a further improvement to the above technical solution, a night vision goggle, a ball valve, and a thermal expansion valve are sequentially connected between the drying filter and the evaporator.

[0010] As a further improvement to the above technical solution, the refrigerant return section includes a return copper pipe and a solenoid valve, wherein the solenoid valve is mounted on the return copper pipe, and the second outlets of the first four-way valve and the second four-way valve are both connected to the return copper pipe.

[0011] As a further improvement to the above technical solution, a control unit is also included. The control unit includes an electronic control board, a low-pressure sensor, and an exhaust temperature probe. The low-pressure sensor is connected between the evaporator and the vapor-liquid separator. The low-pressure sensor, the exhaust temperature probe, and the solenoid valve are all connected to the electronic control board.

[0012] The beneficial effects of this utility model are: the liquid receiver adopts a three-inlet and one-outlet design, and the reasonable liquid storage volume is calculated based on the long-distance outdoor unit copper pipe connection. It is more in line with the system design than conventional liquid receivers, so that the system can still operate normally when the required refrigerant varies greatly in different modes. Attached Figure Description

[0013] The present invention will be further explained below with reference to the accompanying drawings and specific embodiments.

[0014] Figure 1 This is a structural block diagram of the present invention.

[0015] In the diagram: 1. Compressor; 2. Oil-water separator; 3. Refrigerant return section; 31. Second four-way valve; 32. Return copper pipe; 33. Solenoid valve; 4. Refrigerant balance section; 41. First four-way valve; 42. Indoor condenser; 43. Titanium bulb; 44. Outdoor condenser; 45. Liquid receiver; 46. Check valve; 5. Dryer filter; 6. Evaporator; 7. Vapor-liquid separator; 8. Control unit; 81. Electronic control board; 82. Low-pressure sensor; 83. Exhaust temperature probe. Detailed Implementation

[0016] This section will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but they should not be construed as limiting the scope of protection of the present utility model.

[0017] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0018] In the description of this utility model, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. If "first" or "second" is used in the description, it is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0019] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0020] Reference Figure 1A dehumidifying heat pump refrigerant device suitable for long-distance connection of outdoor condensers includes: a compressor 1, an oil-water separator 2, a refrigerant return section 3, a refrigerant balance section 4, a dryer filter 5, an evaporator 6, and a vapor-liquid separator 7, wherein the compressor 1, oil-water separator 2, refrigerant return section 3, refrigerant balance section 4, dryer filter 5, evaporator 6, and vapor-liquid separator 7 are sequentially connected; the refrigerant balance section 4 includes a first four-way valve 41, an indoor condenser 42, a titanium cannon 43, an outdoor condenser 44, and a liquid receiver 45, wherein the first outlet and the third outlet of the first four-way valve 41 are respectively connected to the indoor condenser 42 and the titanium cannon 43; the refrigerant return section 3 includes a second four-way valve 31, wherein the first outlet of the second four-way valve 31 is connected to the first four-way valve 41, and the third outlet of the second four-way valve 31 is connected to the outdoor condenser 44; the indoor condenser 42, the titanium cannon 43, and the outdoor condenser 44 are all connected to the liquid receiver 45. The volume of the receiver 45 is designed according to the length of the outdoor piping to ensure that the unit always has enough refrigerant.

[0021] In a preferred embodiment, a one-way valve 46 is provided between the indoor condenser 42, the titanium bulb 43, the outdoor condenser 44, and the liquid receiver 45. This prevents refrigerant backflow.

[0022] In a preferred embodiment, a night vision goggle, a ball valve, and a thermal expansion valve are sequentially connected between the dryer filter 5 and the evaporator 6.

[0023] In a preferred embodiment, the refrigerant return section 3 includes a return copper pipe 32 and a solenoid valve 33. The solenoid valve 33 is mounted on the return copper pipe 32, and the second outlets of both the first four-way valve 41 and the second four-way valve 31 are connected to the return copper pipe 32. This prevents refrigerant from remaining in the pipes when not in use, thus avoiding disruption to the normal operation of the system.

[0024] As a preferred embodiment, since each condenser will store refrigerant when not in use, especially when the outdoor unit has a long connecting copper pipe and the ambient temperature is low, a large amount of liquid refrigerant will be stored, which seriously affects the normal operation of the system. Furthermore, if the refrigerant return rate is too fast or too much, it will also cause damage to the compressor. To ensure the normal operation of the system, a control unit 8 is also included. The control unit 8 includes an electronic control board 81, a low-pressure sensor 82, and an exhaust temperature probe 83. The low-pressure sensor 82 is connected between the evaporator 6 and the vapor-liquid separator 7. The low-pressure sensor 82, the exhaust temperature probe 83, and the solenoid valve 33 are all connected to the electronic control board 81. The electronic control board 81 can calculate the normal range values ​​of low pressure and exhaust temperature based on the return air temperature. When the low pressure sensor 82 or the exhaust temperature probe 83 is detected to be too low or too high (deviating from the normal range), the electronic control board 81 outputs a signal, and the solenoid valve 33 opens, returning the unused refrigerant to the main unit system, and finally storing it in the liquid receiver 45. When the low pressure sensor 82 and the exhaust temperature probe 83 are detected to be within the normal range, the solenoid valve 33 will continue to open for a set time period before closing, which can prevent the refrigerant from returning too quickly or too much, which could damage the compressor.

[0025] The above are merely preferred embodiments of this utility model and do not limit the patent scope of this utility model. Any equivalent structural transformations made based on the inventive concept of this utility model and the contents of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are included within the patent protection scope of this utility model.

Claims

1. A dehumidifying heat pump refrigerant device suitable for long-distance connection of outdoor condensers, characterized in that, include: The compressor (1), oil-water separator (2), refrigerant return section (3), refrigerant balance section (4), dryer filter (5), evaporator (6) and vapor-liquid separator (7) are connected in sequence; The refrigerant balance unit (4) includes a first four-way valve (41), an indoor condenser (42), a titanium cannon (43), an outdoor condenser (44), and a liquid receiver (45). The first outlet and the third outlet of the first four-way valve (41) are respectively connected to the indoor condenser (42) and the titanium cannon (43). The refrigerant return section (3) includes a second four-way valve (31), the first outlet of the second four-way valve (31) is connected to the first four-way valve (41), and the third outlet of the second four-way valve (31) is connected to the outdoor condenser (44). The indoor condenser (42), titanium cannon (43), and outdoor condenser (44) are all connected to the liquid storage tank (45).

2. The dehumidifying heat pump refrigerant device suitable for long-distance connection of outdoor condensers as described in claim 1, characterized in that: One-way valves (46) are provided between the indoor condenser (42), the titanium cannon (43), the outdoor condenser (44) and the liquid receiver (45).

3. A dehumidifying heat pump refrigerant device suitable for long-distance connection of outdoor condensers as described in claim 2, characterized in that: A night vision goggles, a ball valve, and a thermal expansion valve are sequentially connected between the dryer filter (5) and the evaporator (6).

4. A dehumidifying heat pump refrigerant device suitable for long-distance connection of outdoor condensers as described in any one of claims 1-3, characterized in that: The refrigerant return section (3) includes a return copper pipe (32) and a solenoid valve (33). The solenoid valve (33) is mounted on the return copper pipe (32). The second outlets of the first four-way valve (41) and the second four-way valve (31) are both connected to the return copper pipe (32).

5. A dehumidifying heat pump refrigerant device suitable for long-distance connection of outdoor condensers as described in claim 4, characterized in that: It also includes a control unit (8), which includes an electronic control board (81), a low-pressure sensor (82) and an exhaust temperature probe (83). The low-pressure sensor (82) is connected between the evaporator (6) and the vapor-liquid separator (7). The low-pressure sensor (82), the exhaust temperature probe (83) and the solenoid valve (33) are all connected to the electronic control board (81).

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