Air-cooled screw total heat recovery unit

Abstract

The utility model relates to the technical field of heat exchange, in particular to an air-cooled screw total heat recovery unit which comprises a compressor, a four-way electromagnetic valve, a heat recovery heat exchanger, an air conditioner water heat exchanger, an air side heat exchanger, a first electromagnetic valve, a second electromagnetic valve, a third electromagnetic valve, a fourth electromagnetic valve and a fifth electromagnetic valve. The utility model aims to provide an air-cooled screw four-pipe integrated unit which has the characteristics of integration of multiple functions, high efficiency, energy conservation, simplified structure and strong adaptability.

Description

Technical Field

[0001] This utility model relates to the field of heat exchange technology, specifically to an air-cooled screw total heat recovery unit. Background Technology

[0002] With increasingly stringent requirements for building energy conservation and environmental protection, the energy efficiency and multifunctionality of air conditioning systems have become a focus of industry attention. Traditional air conditioning systems typically employ a single cooling or heating mode, failing to simultaneously meet the cooling and heating needs of different areas, resulting in energy waste and low operating efficiency.

[0003] Therefore, there is an urgent need for an air-cooled screw chiller unit that can operate efficiently and adapt to various working conditions. Summary of the Invention

[0004] In order to overcome the shortcomings and deficiencies of the existing technology, the purpose of this utility model is to provide an integrated air-cooled screw four-pipe unit with the characteristics of multi-functional integration, high efficiency and energy saving, simplified structure and strong adaptability.

[0005] This utility model is achieved through the following technical solution:

[0006] A wind-cooled screw compressor total heat recovery unit includes a compressor, a four-way solenoid valve, a heat recovery heat exchanger, an air conditioning water heat exchanger, an air-side heat exchanger, a first solenoid valve, a second solenoid valve, a third solenoid valve, a fourth solenoid valve, and a fifth solenoid valve. The liquid outlet of the compressor is connected to one end of the first solenoid valve and one end of the third solenoid valve. The other end of the first solenoid valve is connected to the first connecting end of the four-way solenoid valve. The other end of the third solenoid valve is connected to the liquid inlet of the heat recovery heat exchanger. The liquid inlet of the air conditioning water heat exchanger is connected to the second connecting end of the four-way solenoid valve. The liquid outlet of the heat recovery heat exchanger is connected to one end of the fifth solenoid valve. The liquid outlet of the air conditioning water heat exchanger is connected to the other end of the fifth solenoid valve and one end of the second solenoid valve. The other end of the second solenoid valve is connected to one end of the fourth solenoid valve. The other end of the fourth solenoid valve is connected to one end of the air-side heat exchanger. The other end of the air-side heat exchanger is connected to the fourth connecting end of the four-way solenoid valve. The third connecting end of the four-way solenoid valve is connected to the liquid inlet of the compressor.

[0007] The air-cooled screw total heat recovery unit also includes a gas-liquid separator, which is connected between the third connection end of the four-way solenoid valve and the liquid inlet end of the compressor.

[0008] The compressor is also equipped with a high-low pressure switch between its inlet and outlet ends.

[0009] The air-cooled screw full-heat recovery unit further comprises a liquid accumulator, a first angle valve, a drying filter, a second angle valve and an electronic expansion valve, one end of the liquid accumulator is communicated with a liquid outlet end of the heat recovery heat exchanger, one end of a fifth electromagnetic valve and one end of a wind side heat sink, the other end of the liquid accumulator is communicated with the other end of a second electromagnetic valve and one end of a fourth electromagnetic valve in sequence through the first angle valve, the drying filter, the second angle valve and the electronic expansion valve.

[0010] The one-way valves are arranged between the fourth electromagnetic valve and the air-cooled heat exchanger, between the second electromagnetic valve and the air conditioner water heat exchanger, between one end of the fifth electromagnetic valve and the liquid accumulator, between one end of the heat recovery heat exchanger and the liquid accumulator, and between one end of the liquid accumulator and one end of the wind side heat exchanger.

[0011] The air-cooled screw full-heat recovery unit of the utility model, through the cooperative work of the compressor, the four-way electromagnetic valve, the heat recovery heat exchanger, the air conditioner water heat exchanger, the wind side heat exchanger, the first electromagnetic valve, the second electromagnetic valve, the third electromagnetic valve, the fourth electromagnetic valve and the fifth electromagnetic valve, realizes the quick switching of multiple modes such as refrigeration, heating and heat recovery, can simultaneously meet the cold and heat demands of different areas, significantly improves the energy utilization efficiency and reduces energy waste. BRIEF DESCRIPTION OF DRAWINGS

[0012] The utility model is further described by using the drawings, but the embodiments in the drawings do not constitute any limitation to the utility model, and other drawings can be obtained according to the following drawings without the creative labor of the ordinary skilled in the art.

[0013] Figure 1 It is the line connection diagram of the utility model.

[0014] Reference signs

[0015] First electromagnetic valve - 101, second electromagnetic valve - 102, third electromagnetic valve - 103, fourth electromagnetic valve - 104, fifth electromagnetic valve - 105, compressor - 106, four-way electromagnetic valve - 107, heat recovery heat exchanger - 108, air conditioner water heat exchanger - 109, wind side heat exchanger - 110, gas-liquid separator - 111, high-low pressure switch - 112, liquid accumulator - 113, first angle valve - 114, drying filter - 115, second angle valve - 116, electronic expansion valve - 117, one-way valve - 118. DETAILED DESCRIPTION

[0016] In order to make the above objects, features and advantages of the present application more obvious and easy to understand, the specific embodiments of the present application will be described in detail below with reference to the drawings. In the following description, many specific details are set forth in order to provide a thorough 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, therefore the present application is not limited to the specific embodiments disclosed below.

[0017] 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 convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0018] 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 "multiple" is at least two, for example, two, three, etc., unless otherwise explicitly specified.

[0019] With the continuous improvement of building energy saving and environmental protection requirements, the energy efficiency and multifunctionality of air conditioning systems have become the focus of the industry. Traditional air conditioning systems usually use single refrigeration or heating mode, which cannot meet the cooling and heating demands of different areas at the same time, resulting in energy waste and low operating efficiency.

[0020] In order to solve the above problems, the embodiment discloses a wind-cooled screw full-heat recovery unit, and a circuit connection diagram thereof is as shown in Figure 1As shown, it comprises a compressor 106, a four-way electromagnetic valve 107, a heat recovery heat exchanger 108, an air conditioning water heat exchanger 109, a wind side heat exchanger 110, a first electromagnetic valve 101, a second electromagnetic valve 102, a third electromagnetic valve 103, a fourth electromagnetic valve 104 and a fifth electromagnetic valve 105; the liquid outlet end of the compressor 106 is communicated with one end of the first electromagnetic valve 101 and one end of the third electromagnetic valve 103 respectively, the other end of the first electromagnetic valve 101 is communicated with the first communication end of the four-way electromagnetic valve 107, the other end of the third electromagnetic valve 103 is communicated with the liquid inlet end of the heat recovery heat exchanger 108, the liquid inlet end of the air conditioning water heat exchanger 109 is communicated with the second communication end of the four-way electromagnetic valve 107; the liquid outlet end of the heat recovery heat exchanger 108 is communicated with one end of the fifth electromagnetic valve 105 respectively, the liquid outlet end of the air conditioning water heat exchanger 109 is communicated with the other end of the fifth electromagnetic valve 105 and one end of the second electromagnetic valve 102 respectively, the other end of the second electromagnetic valve 102 is communicated with one end of the fourth electromagnetic valve 104, the other end of the fourth electromagnetic valve 104 is communicated with one end of the wind side heat exchanger 110 respectively, the other end of the wind side heat exchanger 110 is communicated with the fourth communication end of the four-way electromagnetic valve 107, and the third communication end of the four-way electromagnetic valve 107 is communicated with the liquid inlet end of the compressor 106.

[0021] In the embodiment, four working conditions can be realized for switching at any time, and specifically, the following four working conditions can be realized: (1) the four-way electromagnetic valve 107 is off, the first electromagnetic valve 101 is on, the second electromagnetic valve 102 is on, the third electromagnetic valve 103 is off, the fourth electromagnetic valve 104 is off, and the fifth electromagnetic valve 105 is off, to realize the refrigeration effect; (2) the four-way electromagnetic valve 107 is off, the first electromagnetic valve 101 is off, the second electromagnetic valve 102 is on, the third electromagnetic valve 103 is on, the fourth electromagnetic valve 104 is off, and the fifth electromagnetic valve 105 is off, to realize the refrigeration+heat recovery effect; (3) the four-way electromagnetic valve 107 is on, the first electromagnetic valve 101 is off, the second electromagnetic valve 102 is off, the third electromagnetic valve 103 is on, the fourth electromagnetic valve 104 is on, and the fifth electromagnetic valve 105 is off, to realize the heat recovery effect; (4) the four-way electromagnetic valve 107 is on, the first electromagnetic valve 101 is on, the second electromagnetic valve 102 is off, the third electromagnetic valve 103 is off, the fourth electromagnetic valve 104 is on, and the fifth electromagnetic valve 105 is on, to realize the heating effect.

[0022] In the (1) working condition, air conditioning chilled water (7 / 12 degrees) is prepared; in the (2) working condition, air conditioning hot water (45 / 40 degrees) is prepared; in the (3) working condition, domestic hot water (55 / 50 degrees) is prepared; and in the (4) working condition, air conditioning chilled water (7 / 12 degrees) is prepared at the same time, and domestic hot water (55 / 50 degrees) is prepared.

[0023] Further, the air-cooled screw full-heat recovery unit further comprises a gas-liquid separator 111 connected between the third communication end of the four-way electromagnetic valve 107 and the liquid inlet end of the compressor 106.

[0024] Further, the air-cooled screw full-heat recovery unit further comprises a gas-liquid separator 111 connected between the third communication end of the four-way electromagnetic valve 107 and the liquid inlet end of the compressor 106.

[0025] Further, the air-cooled screw full-heat recovery unit further comprises a gas-liquid separator 111 connected between the third communication end of the four-way electromagnetic valve 107 and the liquid inlet end of the compressor 106.

[0026] Further, the air-cooled screw full-heat recovery unit further comprises a gas-liquid separator 111 connected between the third communication end of the four-way electromagnetic valve 107 and the liquid inlet end of the compressor 106.

[0027] In summary, the air-cooled screw full-heat recovery unit of the embodiment can realize the rapid switching of multiple modes such as refrigeration, heating and heat recovery through the cooperative work of the compressor 106, the four-way electromagnetic valve 107, the heat recovery heat exchanger 108, the air conditioner water heat exchanger 109, the air side heat exchanger 110, the first electromagnetic valve 101, the second electromagnetic valve 102, the third electromagnetic valve 103, the fourth electromagnetic valve 104 and the fifth electromagnetic valve 105, can simultaneously meet the cold and heat demands of different areas, significantly improves the energy utilization efficiency and reduces energy waste.

[0028] Finally, it should be noted that the above embodiments 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 technical solutions of the present application.

Claims

1. A wind-cooled screw compressor total heat recovery unit, characterized in that, It includes a compressor, a four-way solenoid valve, a heat recovery heat exchanger, an air conditioning water heat exchanger, an air-side heat exchanger, a first solenoid valve, a second solenoid valve, a third solenoid valve, a fourth solenoid valve, and a fifth solenoid valve. The compressor's outlet is connected to one end of the first solenoid valve and one end of the third solenoid valve. The other end of the first solenoid valve is connected to the first connecting end of the four-way solenoid valve. The other end of the third solenoid valve is connected to the inlet of the heat recovery heat exchanger. The inlet of the air conditioning water heat exchanger is connected to the second connecting end of the four-way solenoid valve. The liquid outlet of the heat recovery heat exchanger is connected to one end of the fifth solenoid valve, the liquid outlet of the air conditioning water heat exchanger is connected to the other end of the fifth solenoid valve and one end of the second solenoid valve, the other end of the second solenoid valve is connected to one end of the fourth solenoid valve, the other end of the fourth solenoid valve is connected to one end of the air-side heat exchanger, the other end of the air-side heat exchanger is connected to the fourth connecting end of the four-way solenoid valve, and the third connecting end of the four-way solenoid valve is connected to the liquid inlet of the compressor.

2. The air-cooled screw compressor total heat recovery unit according to claim 1, characterized in that, The air-cooled screw total heat recovery unit also includes a gas-liquid separator, which is connected between the third connection end of the four-way solenoid valve and the liquid inlet end of the compressor.

3. The air-cooled screw compressor total heat recovery unit according to claim 1, characterized in that, A high-low pressure switch is also connected between the liquid inlet and liquid outlet of the compressor.

4. The air-cooled screw compressor total heat recovery unit according to claim 1, characterized in that, The air-cooled screw total heat recovery unit also includes a liquid receiver, a first angle valve, a dryer filter, a second angle valve, and an electronic expansion valve. One end of the liquid receiver is connected to the liquid outlet of the heat recovery heat exchanger, one end of the fifth solenoid valve, and one end of the air-side radiator. The other end of the liquid receiver is connected to one end of the fourth solenoid valve via the first angle valve, the dryer filter, the second angle valve, the electronic expansion valve, and the other end of the second solenoid valve.

5. The air-cooled screw compressor total heat recovery unit according to claim 4, characterized in that, One-way valves are provided between the fourth solenoid valve and the air-cooled heat exchanger, between the second solenoid valve and the air conditioning water heat exchanger, between the fifth solenoid valve and one end of the liquid storage tank, between the heat recovery heat exchanger and one end of the liquid storage tank, and between one end of the liquid storage tank and one end of the air-side heat exchanger.

Images