An industrial refrigeration and air conditioning system

Abstract

The utility model relates to refrigeration cycle system technical field, concretely relates to an industrial refrigeration air conditioning system, including fluorine pump, heat recovery heat exchanger, condenser, water route heat exchanger, first recovery electromagnetic valve, second recovery electromagnetic valve, frequency conversion compressor, liquid storage tank, monitoring module, first electronic expansion valve and second electronic expansion valve, monitoring module is connected with water route heat exchanger, first electronic expansion valve and second electronic expansion valve are connected with monitoring module respectively, the input of fluorine pump is connected with first electronic expansion valve and second electronic expansion valve respectively, the output of fluorine pump is connected with liquid storage tank, first recovery electromagnetic valve is connected with water route heat exchanger and condenser respectively, second recovery electromagnetic valve is connected with water route heat exchanger and frequency conversion compressor respectively, both ends of frequency conversion compressor are connected with condenser, have realized the energy consumption of air conditioning system low temperature operation can be reduced greatly, improved the reliability of compressor, make air conditioning system can low temperature, energy -conserving operation.

Description

Technical Field

[0001] This utility model relates to the field of refrigeration cycle system technology, and in particular to an industrial refrigeration and air conditioning system. Background Technology

[0002] With the rapid development of industrialization, especially the rise of high-energy-consuming industries such as data centers, pharmaceuticals, food processing, and chemicals, the demand for refrigeration and air conditioning systems is increasing day by day. In traditional application solutions, refrigeration is carried out by low-temperature compressors, and a single electronic expansion valve is used to regulate multiple load applications.

[0003] However, existing systems that rely solely on low-temperature compressors have poor refrigeration efficiency, high energy consumption at low temperatures, and low reliability. Utility Model Content

[0004] The purpose of this utility model is to provide an industrial refrigeration and air conditioning system that aims to solve the technical problems of poor refrigeration efficiency, high energy consumption at low temperatures, and low reliability of existing systems that rely solely on low-temperature compressors.

[0005] To achieve the above objectives, this utility model employs an industrial refrigeration and air conditioning system, comprising a refrigerant pump, a heat recovery heat exchanger, a condenser, a water circuit heat exchanger, a first recovery solenoid valve, a second recovery solenoid valve, a variable frequency compressor, a liquid storage tank, a monitoring module, a first electronic expansion valve, and a second electronic expansion valve. The monitoring module is connected to the water circuit heat exchanger. The first and second electronic expansion valves are respectively connected to the monitoring module. The input end of the refrigerant pump is connected to both the first and second electronic expansion valves, and the output end of the refrigerant pump is connected to the liquid storage tank. The first recovery solenoid valve is connected to both the water circuit heat exchanger and the condenser. The second recovery solenoid valve is connected to both the water circuit heat exchanger and the variable frequency compressor. Both ends of the variable frequency compressor are connected to the condenser. The liquid storage tank is also connected to the condenser. The heat recovery heat exchanger is positioned above the condenser.

[0006] The monitoring module includes a first intake temperature sensor, a second intake temperature sensor, a first heat exchanger, and a second heat exchanger. The first intake temperature sensor and the second intake temperature sensor are respectively connected to the water heat exchanger. The first heat exchanger is connected to the first intake temperature sensor and the first electronic expansion valve. The second heat exchanger is connected to the second intake temperature sensor and the second electronic expansion valve.

[0007] The industrial refrigeration and air conditioning system further includes a first check valve, which is provided between the first electronic expansion valve, the second electronic expansion valve and the refrigerant pump.

[0008] The industrial refrigeration and air conditioning system further includes a second one-way valve, which is disposed on the variable frequency compressor.

[0009] This utility model discloses an industrial refrigeration and air conditioning system. It achieves uniform liquid distribution regulation by adding a first electronic expansion valve and a second electronic expansion valve, and realizes a heat recovery function by adding a first recovery solenoid valve and a second recovery solenoid valve. In standby mode, the first recovery solenoid valve is opened and the second recovery solenoid valve is closed, allowing all liquid refrigerant to flow through the heat recovery unit, be converted into gaseous refrigerant, and then return to the compressor. During full-load operation, the first recovery solenoid valve is closed and the second recovery solenoid valve is opened, achieving rapid response cooling to the heat source. Multiple loads are precisely regulated through multiple electronic expansion valves. In low-temperature environments, the refrigerant pump replaces the traditional compressor, achieving energy saving and reliable operation. The added heat recovery heat exchanger ensures rapid response and reliable and energy-saving operation during standby. Furthermore, by adding a heat recovery coil on the condenser side, the operational reliability of the side-frequency compressor and the refrigerant pump in standby mode is improved. Through these methods, the energy consumption of the air conditioning system during low-temperature operation is significantly reduced, the reliability of the compressor is improved, and the air conditioning system can operate at low temperatures and with energy efficiency. Attached Figure Description

[0010] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0011] Figure 1 This is a schematic diagram of the first embodiment of the industrial refrigeration and air conditioning system of this utility model.

[0012] Figure 2 This is a schematic diagram of the second embodiment of the industrial refrigeration and air conditioning system of this utility model.

[0013] Figure 3 This is a schematic diagram of the third embodiment of the industrial refrigeration and air conditioning system of this utility model.

[0014] 101-Fluorine pump, 102-Heat recovery heat exchanger, 103-Condenser, 104-Water heat exchanger, 105-First recovery solenoid valve, 106-Second recovery solenoid valve, 107-Variable frequency compressor, 108-Liquid storage tank, 109-Liquid pipe, 110-First electronic expansion valve, 111-Second electronic expansion valve, 112-First suction temperature sensor, 113-Second suction temperature sensor, 114-First heat exchanger, 115-Second heat exchanger, 116-First check valve, 117-Second check valve, 118-Third suction temperature sensor, 119-Third electronic expansion valve, 120-Gas pipe. Detailed Implementation

[0015] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.

[0016] Please see Figure 1 This utility model provides an industrial refrigeration and air conditioning system, including a refrigerant pump 101, a heat recovery heat exchanger 102, a condenser 103, a water circuit heat exchanger 104, a first recovery solenoid valve 105, a second recovery solenoid valve 106, a variable frequency compressor 107, a liquid storage tank 108, a monitoring module, a first electronic expansion valve 110, and a second electronic expansion valve 111. The monitoring module is connected to the water circuit heat exchanger 104, and the first electronic expansion valve 110 and the second electronic expansion valve 111 are respectively connected to the monitoring module. The input terminal of the refrigerant pump 101 is connected to the first electronic expansion valve 105, the second electronic expansion valve 106, the first electronic expansion valve 107, the second electronic expansion valve 108, and the second electronic expansion valve 108. Electronic expansion valve 110 and second electronic expansion valve 111 are connected. The output end of the fluorine pump 101 is connected to the liquid storage tank 108. The first recovery solenoid valve 105 is connected to the water circuit heat exchanger 104 and the condenser 103 respectively. The second recovery solenoid valve 106 is connected to the water circuit heat exchanger 104 and the variable frequency compressor 107 respectively. Both ends of the variable frequency compressor 107 are connected to the condenser 103. The liquid storage tank 108 is also connected to the condenser 103. The heat recovery heat exchanger 102 is located above the condenser 103.

[0017] In this embodiment, uniform liquid distribution is achieved by adding the first electronic expansion valve 110 and the second electronic expansion valve 111, and the recovery operation function is achieved by adding the first recovery solenoid valve 105 and the second recovery solenoid valve 106. In standby mode, the first recovery solenoid valve 105 is opened and the second recovery solenoid valve 106 is closed, allowing all liquid refrigerant to flow through the heat recovery unit, be converted into gaseous refrigerant, and then return to the compressor. During full-load operation, the first recovery solenoid valve 105 is closed and the second recovery solenoid valve 106 is opened to achieve rapid response cooling to the heat source. Multiple loads are precisely regulated through multiple electronic expansion valves. In low-temperature environments, the refrigerant pump 101 replaces the traditional compressor, achieving energy-saving and reliable operation. The addition of the heat recovery heat exchanger 102 ensures rapid response and reliable and energy-saving operation during standby. Furthermore, the addition of a heat recovery coil on the condenser side addresses the operational reliability of the side-frequency compressor and the refrigerant pump 101 in standby mode. Through these methods, the energy consumption of the air conditioning system during low-temperature operation is significantly reduced, the reliability of the compressor is improved, and the air conditioning system can operate at low temperatures and with energy efficiency.

[0018] Furthermore, the monitoring module includes a first intake temperature sensor 112, a second intake temperature sensor 113, a first heat exchanger 114, and a second heat exchanger 115. The first intake temperature sensor 112 and the second intake temperature sensor 113 are respectively connected to the water heat exchanger 104. The first heat exchanger 114 is respectively connected to the first intake temperature sensor 112 and the first electronic expansion valve 110. The second heat exchanger 115 is respectively connected to the second intake temperature sensor 113 and the second electronic expansion valve 111.

[0019] In this embodiment, the first suction temperature sensor 112 and the second suction temperature sensor are used to sense the suction temperature in the air conditioning system and feed back their values ​​to the first electronic expansion valve 110 and the second electronic expansion valve 111. The data provided by the suction temperature sensor can be used by the controller to intelligently adjust the opening and closing degree of the electronic expansion valve to ensure that the cooling system achieves the optimal cooling effect. In addition, the first heat exchanger 114 and the second heat exchanger 115 are equivalent to cold plates, and the refrigerant directly evaporates and absorbs heat in the cold plates, quickly removing heat.

[0020] Furthermore, the industrial refrigeration and air conditioning system also includes a first one-way valve 116, which is disposed between the first electronic expansion valve 110, the second electronic expansion valve 111 and the refrigerant pump 101; the industrial refrigeration and air conditioning system also includes a second one-way valve 117, which is disposed on the variable frequency compressor 107.

[0021] First embodiment: Liquid distribution uniformity is achieved by adding the first electronic expansion valve 110 and the second electronic expansion valve 111; recovery operation function is achieved by adding the first recovery solenoid valve 105 and the second recovery solenoid valve 106. In standby mode, the first recovery solenoid valve 105 is opened and the second recovery solenoid valve 106 is closed, allowing all liquid refrigerant to flow through the heat recovery unit, be converted into gaseous refrigerant, and then return to the compressor. During full-load operation, the first recovery solenoid valve 105 is closed and the second recovery solenoid valve 106 is opened, achieving rapid response cooling to the heat source, allowing multiple loads to pass through multiple electronic expansion valves. To achieve precise regulation, the refrigerant pump 101 replaces the traditional compressor in low-temperature environments, achieving energy-saving and reliable operation. The addition of the heat recovery heat exchanger 102 ensures rapid response and reliable and energy-saving operation during standby. The first suction temperature sensor 112 and the second suction temperature sensor sense the suction temperature in the air conditioning system and feed back its value to the first electronic expansion valve 110 and the second electronic expansion valve 111. The data provided by the suction temperature sensor allows the controller to intelligently adjust the opening and closing degree of the electronic expansion valves, ensuring the cooling system achieves optimal cooling performance.

[0022] Second embodiment: Compared with embodiment one, as Figure 2 As shown, the first recovery solenoid valve 105 and the second recovery solenoid valve 106 are removed, and the third electronic expansion valve 119 and the third suction temperature sensor 118 are added. The first electronic expansion valve 110 and the second electronic expansion valve 111 are used to achieve uniform liquid distribution, while the third electronic expansion valve 119 is added to achieve heat recovery regulation. During standby, the first electronic expansion valve 110 and the second electronic expansion valve 111 are opened and closed, while the third electronic expansion valve 119 is opened to allow all liquid refrigerant to flow through the heat recovery heat exchanger 102, where it is converted into gaseous refrigerant before returning to the variable frequency compressor 107. During full-load operation, the first electronic expansion valve 110 and the second electronic expansion valve 111 can be opened, while the third electronic expansion valve 119 can be closed to achieve rapid response cooling to the heat source.

[0023] Third embodiment: Compared with embodiment one, as Figure 3 As shown, by removing the first recovery solenoid valve 105 and the second recovery solenoid valve 106, the water heat exchanger 104 is directly connected to the condenser 103. The first electronic expansion valve 110 and the second electronic expansion valve 111 are used to achieve uniform liquid distribution adjustment, and the system can be stably operated by connecting the heat recovery device in series. In the absence of load, the unevaporated liquid refrigerant can also be evaporated in the heat recovery device to ensure that the compressor does not produce liquid slugging.

[0024] The above-disclosed embodiments are merely preferred embodiments of the present utility model and should not be construed as limiting the scope of the present utility model. Those skilled in the art can understand that implementing all or part of the above-described embodiments and making equivalent changes in accordance with the claims of the present utility model are still within the scope of the utility model.

Claims

1. An industrial refrigeration and air conditioning system, characterized in that, The system includes a refrigerant pump, a heat recovery heat exchanger, a condenser, a water circuit heat exchanger, a first recovery solenoid valve, a second recovery solenoid valve, a variable frequency compressor, a storage tank, a monitoring module, a first electronic expansion valve, and a second electronic expansion valve. The monitoring module is connected to the water circuit heat exchanger. The first and second electronic expansion valves are respectively connected to the monitoring module. The input end of the refrigerant pump is connected to both the first and second electronic expansion valves. The output end of the refrigerant pump is connected to the storage tank. The first recovery solenoid valve is connected to both the water circuit heat exchanger and the condenser. The second recovery solenoid valve is connected to both the water circuit heat exchanger and the variable frequency compressor. Both ends of the variable frequency compressor are connected to the condenser. The storage tank is also connected to the condenser. The heat recovery heat exchanger is positioned above the condenser.

2. The industrial refrigeration and air conditioning system as described in claim 1, characterized in that, The monitoring module includes a first intake temperature sensor, a second intake temperature sensor, a first heat exchanger, and a second heat exchanger. The first intake temperature sensor and the second intake temperature sensor are respectively connected to the water heat exchanger. The first heat exchanger is connected to the first intake temperature sensor and the first electronic expansion valve. The second heat exchanger is connected to the second intake temperature sensor and the second electronic expansion valve.

3. The industrial refrigeration and air conditioning system as described in claim 2, characterized in that, The industrial refrigeration and air conditioning system also includes a first check valve, which is provided between the first electronic expansion valve, the second electronic expansion valve and the refrigerant pump.

4. The industrial refrigeration and air conditioning system as described in claim 3, characterized in that, The industrial refrigeration and air conditioning system also includes a second one-way valve, which is disposed on the variable frequency compressor.

Images