Air-cooled total heat recovery all-in-one unit

Abstract

The utility model relates to the technical field of heat exchange, in particular to an air-cooled total heat recovery all-in-one unit which comprises a compressor, a first four-way valve, a second four-way valve, an air side heat exchanger, a cold water heat exchanger, a hot water heat exchanger, a refrigeration electric expansion valve, a heat pump electric expansion valve and a heating electromagnetic valve. The liquid outlet end of the compressor communicates with the first communicating end of the first four-way valve, the liquid inlet end of the compressor communicates with the fourth communicating end of the first four-way valve and the fourth communicating end of the second four-way valve, and the second communicating end of the first four-way valve communicates with the liquid inlet end of the cold water heat exchanger. The third communication end of the first four-way valve is communicated with the first communication end of the second four-way valve, the second communication end of the second four-way valve is communicated with the liquid inlet end of the air side heat exchanger, and the third communication end of the second four-way valve is communicated with the liquid inlet end of the hot water heat exchanger. The air-cooled total heat recovery all-in-one unit has the advantages of being efficient in heat recovery, energy-saving, simplified in structure and high in adaptability.

Description

TECHNICAL FIELD

[0001] The utility model relates to heat exchange technical field, concretely relates to a kind of air-cooled total heat recovery integrated unit. BACKGROUND

[0002] With the growth of energy demand and the improvement of environmental protection requirements, energy-efficient heat recovery technology becomes an important research direction in the field of heating, ventilation and air conditioning. Traditional heat pump systems can usually only achieve a single function (such as refrigeration or heating), and the heat recovery efficiency is low, and the waste heat resources in the system cannot be fully utilized. In addition, the existing heat recovery unit structure is complex, the maintenance cost is high, and the adaptability is poor under different working conditions, which is difficult to meet the diversified application requirements.

[0003] Therefore, a simple structure, high heat recovery efficiency and strong adaptability air-cooled total heat recovery integrated unit is needed to solve the technical problems existing in traditional systems. SUMMARY

[0004] In order to overcome the shortcomings and deficiencies existing in the prior art, the purpose of the utility model is to provide an air-cooled total heat recovery integrated unit, which has the characteristics of high efficient heat recovery and energy saving, structure simplification and strong adaptability.

[0005] The utility model is realized by the following technical solutions:

[0006] An air-cooled total heat recovery integrated unit, comprising a compressor, a first four-way valve, a second four-way valve, a wind-side heat exchanger, a cold water heat exchanger, a hot water heat exchanger, a refrigeration electric expansion valve, a heat pump electric expansion valve and a heating electromagnetic valve.

[0007] The liquid outlet end of the compressor is communicated with the first communication end of the first four-way valve, the liquid inlet end of the compressor is respectively communicated with the fourth communication end of the first four-way valve and the fourth communication end of the second four-way valve, the second communication end of the first four-way valve is communicated with the liquid inlet end of the cold water heat exchanger, the third communication end of the first four-way valve is communicated with the first communication end of the second four-way valve, the second communication end of the second four-way valve is communicated with the liquid inlet end of the wind-side heat exchanger, and the third communication end of the second four-way valve is communicated with the liquid inlet end of the hot water heat exchanger.

[0008] The liquid outlet end of the wind-side heat exchanger is communicated with one end of the heat pump electric expansion valve, the liquid outlet end of the cold water heat exchanger is respectively communicated with one end of the refrigeration electromagnetic valve and one end of the heating electromagnetic valve, and the other end of the heat pump electric expansion valve and the other end of the refrigeration electromagnetic valve are respectively communicated with the liquid outlet end of the hot water heat exchanger and the other end of the heating electromagnetic valve.

[0009] The air-cooled total heat recovery integrated unit further comprises an oil separator and a gas-liquid separator, the gas-liquid separator is connected between the liquid inlet end of the compressor and the fourth connecting end of the first four-way valve, and the oil separator is connected between the liquid outlet end of the compressor and the first connecting end of the first four-way valve.

[0010] The oil separator and the first connecting end of the first four-way valve are further connected in sequence with a high-low pressure switch, a high-low pressure gauge and a needle valve.

[0011] The air-cooled total heat recovery integrated unit further comprises a high-pressure liquid accumulator, the high-pressure liquid accumulator is connected between the other end of the heat pump electric expansion valve and the other end of the heating electromagnetic valve.

[0012] The air-cooled total heat recovery integrated unit further comprises a first copper mesh filter, a second copper mesh filter, a first check valve, a second check valve and a third check valve, the liquid outlet end of the air-side heat exchanger is in communication with the liquid inlet end of the high-pressure liquid accumulator in sequence through the first copper mesh filter and the first check valve;

[0013] The liquid outlet end of the hot water heat exchanger is in communication with the liquid inlet end of the high-pressure liquid accumulator in sequence through the second check valve, the second copper mesh filter and the third check valve.

[0014] The fourth connecting end of the first four-way valve and the liquid inlet end of the compressor are further connected with a first gas return check valve, and the fourth connecting end of the second four-way valve and the liquid inlet end of the compressor are further connected with a second gas return check valve.

[0015] The air-cooled total heat recovery integrated unit of the utility model has the advantages that the compressor, the four-way valve, the heat exchanger and the electromagnetic valve are arranged, the integration design of the refrigeration, the heating and the heat recovery functions is realized, the heat recovery efficiency is remarkably improved, the energy waste is reduced, the operation cost is reduced, the system structure is optimized, the complex pipeline connection is reduced, the maintenance cost is reduced, the system can be efficiently operated under different working conditions through the flexible switching of the four-way valve, the adaptability is high, and the diversified application requirements are met.

[0016] The air-cooled total heat recovery integrated unit of the utility model has the advantages that the compressor, the four-way valve, the heat exchanger and the electromagnetic valve are arranged, the integration design of the refrigeration, the heating and the heat recovery functions is realized, the heat recovery efficiency is remarkably improved, the energy waste is reduced, the operation cost is reduced, the system structure is optimized, the complex pipeline connection is reduced, the maintenance cost is reduced, the system can be efficiently operated under different working conditions through the flexible switching of the four-way valve, the adaptability is high, and the diversified application requirements are met. BRIEF DESCRIPTION OF DRAWINGS

[0017] The utility model is further explained by the drawings, but the embodiment in the drawings does not constitute any limitation to the utility model, and other drawings can be obtained by the following drawings without the creative labor of the ordinary skilled in the art.

[0018] Figure 1 It is the line connection diagram of the utility model.

[0019] REFERENCE NUMERALS

[0020] Compressor 101, first four-way valve 102, second four-way valve 103, air-side heat exchanger 104, cold water heat exchanger 105, hot water heat exchanger 106, refrigeration expansion valve 107, heat pump expansion valve 108, heating solenoid valve 109, oil separator 110, gas-liquid separator 111, high-low pressure switch 112, high-low pressure gauge 113, needle valve 114, high-pressure accumulator 115, first copper mesh filter 116, second copper mesh filter 117, first check valve 118, second check valve 119, third check valve 120, first gas return check valve 121, second gas return check valve 122. DETAILED DESCRIPTION

[0021] In order to make the above objectives, characteristics and advantages of the present application more apparent, concrete embodiments of the present application will be described in detail below with reference to the drawings. In the following description, a large number of specific details are set forth in order to provide a comprehensive understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the spirit of the present application, so the present application is not limited by the specific embodiments disclosed below.

[0022] In the description of the present application, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the purpose of facilitating the description of the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0023] In addition, the terms "first" and "second" are only for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined with "first" and "second" can explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of "a plurality of" is at least two, such as two, three, etc., unless otherwise specifically limited.

[0024] With the increasing demand for energy and the increasing demand for environmental protection, energy-efficient heat recovery technology has become an important research direction in the field of heating, ventilation and air conditioning. Traditional heat pump systems can usually only achieve a single function (such as refrigeration or heating), and the heat recovery efficiency is low, which cannot fully utilize the waste heat resources in the system. In addition, the existing heat recovery unit has complex structure, high maintenance cost, and poor adaptability under different working conditions, which is difficult to meet the diversified application requirements.

[0025] To solve the above problems, the embodiment discloses a wind-cooled total heat recovery integrated unit, which comprises a compressor 101, a first four-way valve 102, a second four-way valve 103, a wind-side heat exchanger 104, a cold water heat exchanger 105, a hot water heat exchanger 106, a refrigeration electric expansion valve 107, a heat pump electric expansion valve 108 and a heating electromagnetic valve 109.

[0026] The outlet of the compressor 101 is communicated with the first communication end of the first four-way valve 102, the inlet of the compressor 101 is respectively communicated with the fourth communication end of the first four-way valve 102 and the fourth communication end of the second four-way valve 103, the second communication end of the first four-way valve 102 is communicated with the inlet of the cold water heat exchanger 105, the third communication end of the first four-way valve 102 is communicated with the first communication end of the second four-way valve 103, the second communication end of the second four-way valve 103 is communicated with the inlet of the wind-side heat exchanger 104, and the third communication end of the second four-way valve 103 is communicated with the inlet of the hot water heat exchanger 106.

[0027] The outlet of the wind-side heat exchanger 104 is communicated with one end of the heat pump electric expansion valve 108, the outlet of the cold water heat exchanger 105 is respectively communicated with one end of the refrigeration electromagnetic valve and one end of the heating electromagnetic valve 109, the other end of the heat pump electric expansion valve 108 and the other end of the refrigeration electromagnetic valve are respectively communicated with the outlet of the hot water heat exchanger 106 and the other end of the heating electromagnetic valve 109.

[0028] In the embodiment, four working conditions can be realized for switching at any time, specifically, the following four working conditions can be realized: (1) the first four-way valve 102 is open, the second four-way valve 103 is closed, the refrigeration electric expansion valve 107 is open, the heat pump electric expansion valve 108 is closed, and the heating electromagnetic valve 109 is closed, that is, the refrigeration effect can be realized; (2) the first four-way valve 102 is open, the second four-way valve 103 is open, the refrigeration electric expansion valve 107 is open, the heat pump electric expansion valve 108 is closed, and the heating electromagnetic valve 109 is closed, that is, the refrigeration + hot water effect can be realized; (3) the first four-way valve 102 is closed, the second four-way valve 103 is open, the refrigeration electric expansion valve 107 is closed, the heat pump electric expansion valve 108 is open, and the heating electromagnetic valve 109 is open, that is, the heating effect can be realized; (4) the first four-way valve 102 is open, the second four-way valve 103 is open, the refrigeration electric expansion valve 107 is closed, the heat pump electric expansion valve 108 is open, and the heating electromagnetic valve 109 is closed, that is, the hot water heating effect can be realized.

[0029] In (1) working condition, the water temperature of air conditioning side water heat exchanger in / out: 12 / 7℃, outdoor air dry bulb temperature 35℃; in (2) working condition, the water temperature of air conditioning side water heat exchanger in / out: 40 / 45℃, outdoor air dry / wet bulb temperature 7 / 6℃; in (3) working condition, the water temperature of heat recovery mode working condition: heat recovery in / out water temperature 45 / 50℃, air conditioning side water heat exchanger in / out water temperature 12 / 7℃; in (4) working condition, the water temperature of heat recovery in / out: 45 / 50℃, outdoor air dry / wet bulb temperature 20 / 15℃.

[0030] Winter heating and hot water operation instructions: The unit is intelligently controlled according to the water temperature control target, thereby alternately providing air conditioning heating and domestic hot water functions, and the default is air conditioning heating priority; when defrosting, it is switched to refrigeration mode operation.

[0031] Further, the air-cooled total heat recovery integrated unit further comprises an oil separator 110 and a gas-liquid separator 111, the gas-liquid separator 111 is connected between the liquid inlet end of the compressor 101 and the fourth connection end of the first four-way valve 102, and the oil separator 110 is connected between the liquid outlet end of the compressor 101 and the first connection end of the first four-way valve 102.

[0032] Further, the oil separator 110 and the first connection end of the first four-way valve 102 are further connected in sequence with a high-low pressure switch 112, a high-low pressure fluorine table 113 and a needle valve 114.

[0033] Further, the air-cooled total heat recovery integrated unit further comprises a high-pressure liquid accumulator 115, which is connected between the other end of the heat pump electric expansion valve 108 and the other end of the heating electromagnetic valve 109.

[0034] Further, the air-cooled total heat recovery integrated unit further comprises a first copper mesh filter 116, a second copper mesh filter 117, a first one-way valve 118, a second one-way valve 119 and a third one-way valve 120, the liquid outlet end of the air-side heat exchanger 104 is in communication with the liquid inlet end of the high-pressure liquid accumulator 115 through the first copper mesh filter 116 and the first one-way valve 118 in sequence; the liquid outlet end of the hot water heat exchanger 106 is in communication with the liquid inlet end of the high-pressure liquid accumulator 115 through the second one-way valve 119, the second copper mesh filter 117 and the third one-way valve 120 in sequence.

[0035] Further, the fourth communication end of the first four-way valve 102 and the liquid inlet end of the compressor 101 are further connected with a first gas return check valve 121, and the fourth communication end of the second four-way valve 103 and the liquid inlet end of the compressor 101 are further connected with a second gas return check valve 122.

[0036] Specifically, the air-cooled total heat recovery integrated unit has the compressor 101, the four-way valve, the heat exchanger and the electromagnetic valve, realizes the integrated design of the refrigeration, the heating and the heat recovery function, significantly improves the heat recovery efficiency, reduces the energy waste, simultaneously reduces the operation cost; in addition, the utility model discloses through optimizing the system structure, reduces the complex pipeline connection, reduces the maintenance cost, through the flexible switching of four-way valve, system can be under different operating conditions High-efficiency operation, strong adaptability, satisfy the diversified application demand.

[0037] Finally, it should be noted that the above examples are only used to illustrate the technical solutions of the present application, and are not intended to limit the scope of protection of the present application. Although the present application has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present application can be modified or replaced by equivalents without departing from the essence and scope of the present application.

Claims

1. A wind-cooled total heat recovery integrated unit, characterized in that, The air-cooled full-heat recovery integrated unit further comprises a compressor, a first four-way valve, a second four-way valve, an air-side heat exchanger, a cold water heat exchanger, a hot water heat exchanger, a refrigeration electric expansion valve, a heat pump electric expansion valve and a heating solenoid valve. The liquid outlet end of the compressor is communicated with the first communication end of the first four-way valve, the liquid inlet end of the compressor is communicated with the fourth communication end of the first four-way valve and the fourth communication end of the second four-way valve respectively, the second communication end of the first four-way valve is communicated with the liquid inlet end of the cold water heat exchanger, the third communication end of the first four-way valve is communicated with the first communication end of the second four-way valve, the second communication end of the second four-way valve is communicated with the liquid inlet end of the air-side heat exchanger, and the third communication end of the second four-way valve is communicated with the liquid inlet end of the hot water heat exchanger. The liquid outlet end of the air-side heat exchanger is communicated with one end of the heat pump electric expansion valve, the liquid outlet end of the cold water heat exchanger is communicated with one end of the refrigeration solenoid valve and one end of the heating solenoid valve respectively, the other end of the heat pump electric expansion valve and the other end of the refrigeration solenoid valve are communicated with the liquid outlet end of the hot water heat exchanger and the other end of the heating solenoid valve respectively.

2. The unitary heat recovery package of claim 1, wherein, The air-cooled full-heat recovery integrated unit further comprises an oil separator and a gas-liquid separator, the gas-liquid separator is connected between the liquid inlet end of the compressor and the fourth connection end of the first four-way valve, and the oil separator is connected between the liquid outlet end of the compressor and the first connection end of the first four-way valve.

3. The unitary package of claim 2, wherein, A high-low pressure switch, a high-low pressure fluorine table and a needle valve are sequentially connected between the oil separator and the first connection end of the first four-way valve.

4. The unitary package of claim 1, wherein, The air-cooled full-heat recovery integrated unit further comprises a high-pressure liquid accumulator, which is connected between the other end of the heat pump electric expansion valve and the other end of the heating solenoid valve.

5. The unitary package of claim 4, wherein The air-cooled full-heat recovery integrated unit further comprises a first copper mesh filter, a second copper mesh filter, a first one-way valve, a second one-way valve and a third one-way valve, the liquid outlet end of the air-side heat exchanger is communicated with the liquid inlet end of the high-pressure liquid accumulator through the first copper mesh filter and the first one-way valve in sequence. The liquid outlet end of the hot water heat exchanger is communicated with the liquid inlet end of the high-pressure liquid accumulator through the second one-way valve, the second copper mesh filter and the third one-way valve in sequence.

6. The unitary package of claim 1, wherein A first gas return check valve is further connected between the fourth communication end of the first four-way valve and the liquid inlet end of the compressor, and a second gas return check valve is further connected between the fourth communication end of the second four-way valve and the liquid inlet end of the compressor.

Images