Refrigeration equipment

Abstract

The embodiment of the invention provides refrigeration equipment which is characterized in that the refrigeration equipment comprises a compression and condensation component, an economizer, a plurality of evaporators and a control device, the compression and condensation component is connected with the economizer, and the compression and condensation component is used for converting a first gaseous refrigerant into a first liquid refrigerant and conveying the first liquid refrigerant to the economizer; the economizer is connected with the multiple evaporators and used for cooling the first liquid refrigerant to obtain a second liquid refrigerant and transmitting the second liquid refrigerant to the multiple evaporators; the control device is connected with the economizer and used for controlling the flow of the second liquid refrigerant entering the evaporators. The evaporator is further connected with the compression condensation component and used for converting the second liquid refrigerant into a first gas refrigerant and transmitting the first gas refrigerant to the compression condensation component. And the cost of the refrigeration equipment is reduced.

Description

Technical Field

[0001] The present application relates to the field of machinery, and in particular to a refrigeration device. Background Art

[0002] In some scenarios, refrigeration equipment can be used to cool the material body to improve the material preparation efficiency. For example, in the scenario of preparing polysilicon, refrigeration equipment can be used to cool the polysilicon.

[0003] In the related art, an economizer can be configured for each polysilicon evaporator to cool the normal temperature and high pressure liquid refrigerant through the economizer, and then the liquid refrigerant is input into the evaporator and absorbs the heat in the evaporator, thereby achieving the effect of cooling the material body in the evaporator.

[0004] However, in the above method, since each evaporator needs to be equipped with an economizer, the refrigeration cost is high. Summary of the Invention

[0005] The embodiments of the present application provide a refrigeration device to solve the problem of high refrigeration costs.

[0006] In a first aspect, an embodiment of the present application provides a refrigeration device, comprising: a compression condensing component, an economizer, a plurality of evaporators, and a control device, wherein:

[0007] The compression condensing component is connected to the economizer, and is used to convert the first gaseous refrigerant into a first liquid refrigerant and transmit the first liquid refrigerant to the economizer;

[0008] The economizer is connected to the plurality of evaporators, and is used to cool the first liquid refrigerant to obtain a second liquid refrigerant, and transmit the second liquid refrigerant to the plurality of evaporators;

[0009] The control device is connected to the economizer, and the control device is used to control the flow rate of the second liquid refrigerant entering each evaporator;

[0010] The evaporator is also connected to the compression condensation component, and is used to convert the second liquid refrigerant into a first gaseous refrigerant and transmit the first gaseous refrigerant to the compression condensation component.

[0011] In a possible embodiment, the compression and condensation component includes a compressor and a condenser, wherein:

[0012] The compressor is used to compress the first gas refrigerant to obtain a second gas refrigerant, and transmit the second gas refrigerant to the condenser;

[0013] The condenser is used to condense the second gas refrigerant to obtain a first liquid refrigerant.

[0014] In a possible implementation, the refrigeration equipment further includes an oil separator, wherein:

[0015] The oil separator is connected to the compressor and the condenser respectively;

[0016] The oil separator is used to separate impurities from the second gas refrigerant transmitted from the compressor to the condenser.

[0017] In a possible embodiment, the economizer is provided with a plurality of liquid outlets, wherein:

[0018] The plurality of liquid outlets are connected to the plurality of evaporators, and the plurality of liquid outlets correspond one to one to the plurality of evaporators;

[0019] The economizer transmits the second liquid refrigerant to the plurality of evaporators based on a plurality of liquid outlets.

[0020] In a possible implementation, the refrigeration equipment further includes a plurality of first pipelines, each of which further includes a first regulating valve, wherein:

[0021] The plurality of liquid outlets are connected to the plurality of evaporators through the plurality of first pipes;

[0022] The control device is respectively connected to a plurality of first regulating valves;

[0023] The control device controls the flow rate of the second liquid refrigerant entering each evaporator by controlling the multiple first regulating valves.

[0024] In a possible implementation manner, a temperature sensor is further provided on the first pipe, wherein:

[0025] The temperature sensor is connected to the control device;

[0026] The control device detects the temperature of the second liquid refrigerant in the first pipe based on the temperature sensor;

[0027] The control device controls the plurality of first regulating valves based on the temperature of the second liquid refrigerant.

[0028] In a possible embodiment, the refrigeration equipment further includes a gas-liquid separator, wherein:

[0029] The gas-liquid separator is connected to the multiple evaporators, and the gas-liquid separator is also connected to the compressor;

[0030] The gas-liquid separator is used to separate the liquid in the first gaseous refrigerant output by the evaporator.

[0031] In a possible implementation, the economizer further includes a liquid level sensor and a pressure sensor, wherein:

[0032] The control device is connected to the liquid level sensor and the pressure sensor respectively;

[0033] The control device detects liquid level information in the economizer based on the liquid level sensor, and detects pressure in the economizer based on the pressure sensor.

[0034] In a possible implementation, the economizer further includes a safety valve, wherein:

[0035] The control device is connected to the safety valve;

[0036] The control device controls the safety valve based on the pressure in the economizer detected by the pressure sensor.

[0037] In a possible implementation, the economizer further includes a liquid inlet, which is provided with a second regulating valve, wherein:

[0038] The control device is connected to the second regulating valve;

[0039] The second regulating valve is used to control the flow rate of the first liquid refrigerant entering the economizer;

[0040] The control device controls the second regulating valve based on liquid level information in the economizer detected by the liquid level sensor.

[0041] An embodiment of the present application provides a refrigeration device, including: a compression and condensing component, an economizer, multiple evaporators and a control device. The compression and condensing component can be used to convert the refrigerant into a liquid refrigerant at room temperature and high pressure. The economizer can be used to convert the liquid refrigerant at room temperature and high pressure into a liquid refrigerant at low temperature and high pressure. The control device controls the low temperature and high pressure liquid refrigerant to enter multiple evaporators respectively. In this way, compared with the method of one evaporator corresponding to one economizer, when there are multiple evaporators, based on the flow control of the control device, only one economizer is needed to transport liquid refrigerant to multiple evaporators, thereby reducing the cost of the refrigeration equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the present application.

[0043] Figure 1A schematic diagram of a usage scenario of the refrigeration equipment provided in an embodiment of the present application;

[0044] Figure 2 A schematic structural diagram of a refrigeration device provided in an embodiment of the present application;

[0045] Figure 3 A schematic structural diagram of another refrigeration device provided in an embodiment of the present application;

[0046] Figure 4 A schematic structural diagram of another refrigeration device provided in an embodiment of the present application;

[0047] Figure 5 A schematic structural diagram of another refrigeration device provided in an embodiment of the present application;

[0048] Figure 6 A schematic structural diagram of another refrigeration device provided in an embodiment of the present application;

[0049] Figure 7 A schematic structural diagram of another refrigeration device provided in an embodiment of the present application;

[0050] Figure 8 A schematic diagram of the structure of the economizer provided in an embodiment of the present application;

[0051] Figure 9 A schematic diagram of the structure of another economizer provided in an embodiment of the present application;

[0052] Figure 10 This is a schematic structural diagram of another economizer provided in an embodiment of the present application.

[0053] Description of reference numerals:

[0054] 10- Cooling equipment;

[0055] 20- Refrigeration equipment;

[0056] 21-Compression condensation component;

[0057] 22-Economizer;

[0058] 23-evaporator;

[0059] 24-control device;

[0060] 211-compressor;

[0061] 212-condenser;

[0062] 213-Oil separator;

[0063] 221-liquid outlet;

[0064] 222-Liquid level sensor;

[0065] 223-pressure sensor;

[0066] 224-safety valve;

[0067] 225-liquid inlet;

[0068] 226-second regulating valve;

[0069] 231-First pipeline;

[0070] 232-gas-liquid separator;

[0071] 2311-first regulating valve;

[0072] 2312-Temperature sensor.

[0073] The above drawings illustrate specific embodiments of the present application, which will be described in more detail below. These drawings and the textual description are not intended to limit the scope of the present application in any way, but rather to illustrate the concepts of the present application to those skilled in the art by reference to specific embodiments. DETAILED DESCRIPTION

[0074] The following will be combined with the accompanying drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0075] It should be noted that, in the description of this application, the terms "comprises," "includes," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or device. The terms "first," "second," etc., in this application are used to distinguish similar objects, and are not used to describe a particular order or sequence.

[0076] For ease of understanding, the following Figure 1 , describes the scenarios to which the embodiments of the present application are applicable.

[0077] Figure 1 This is a schematic diagram of the use scenario of the refrigeration equipment provided in the embodiment of this application. Figure 1, including a cooling device 10. The cooling device 10 may be a tank for containing process materials to be cooled, such as polysilicon. The process materials to be cooled may be passed from the bottom of the cooling device 10 into the tank of the cooling device 10. The cooling device 10 may be provided with an evaporator, into which a refrigerant may be passed, thereby cooling the process materials in the cooling device 10, gradually cooling the process materials. When the process materials are cooled to a preset temperature, the process materials are discharged from the cooling device 10, thereby achieving a cooling effect.

[0078] In related technologies, an economizer can be installed in each polysilicon evaporator. This economizer cools the room-temperature, high-pressure liquid refrigerant, which is then fed into the evaporator to absorb heat, thereby cooling the material inside the evaporator. However, this method requires an economizer for each evaporator, resulting in high cooling costs.

[0079] An embodiment of the present application provides a refrigeration device, including: a compression and condensing component, an economizer, multiple evaporators and a control device. The compression and condensing component can be used to convert the refrigerant into a liquid refrigerant at room temperature and high pressure. The economizer can be used to convert the liquid refrigerant at room temperature and high pressure into a liquid refrigerant at low temperature and high pressure. The control device controls the low temperature and high pressure liquid refrigerant to enter multiple evaporators respectively. In this way, compared with the method of one evaporator corresponding to one economizer, when there are multiple evaporators, based on the flow control of the control device, only one economizer is needed to transport liquid refrigerant to multiple evaporators, thereby reducing the cost of the refrigeration equipment.

[0080] The refrigeration device shown in this application is described in detail below through specific embodiments. It should be noted that the following embodiments can exist independently or in combination with each other, and the same or similar contents will not be repeated in different embodiments.

[0081] Figure 2 This is a schematic diagram of the structure of a refrigeration device provided in an embodiment of the present application. Figure 2The refrigeration equipment 20 includes: a compression and condensing component 21, an economizer 22, multiple evaporators 23 and a control device 24, wherein the compression and condensing component 21 is connected to the economizer 22, and the compression and condensing component 21 is used to convert the first gaseous refrigerant into a first liquid refrigerant and transmit the first liquid refrigerant to the economizer 22; the economizer 22 is connected to the multiple evaporators 23, and the economizer 22 is used to cool the first liquid refrigerant to obtain a second liquid refrigerant and transmit the second liquid refrigerant to the multiple evaporators 23; the control device 24 is connected to the economizer 22, and the control device 24 is used to control the flow rate of the second liquid refrigerant entering each evaporator 23; the evaporator 23 is also connected to the compression and condensing component 21, and the evaporator 23 is used to convert the second liquid refrigerant into a first gaseous refrigerant and transmit the first gaseous refrigerant to the compression and condensing component 21.

[0082] The compression and condensation component 21 has the function of increasing pressure and liquefying, and can be used to pressurize and liquefy the input gas, thereby converting the gas into a high-pressure liquid. For example, the compression and condensation component 21 can be used to pressurize and liquefy the input first gaseous refrigerant, thereby obtaining a high-pressure first liquid refrigerant. The refrigerant can be Freon.

[0083] The compression condensation component 21 is connected to the economizer 22 and the evaporator 23 respectively.

[0084] The compression and condensing component 21 may transmit the compressed and condensed first liquid refrigerant to the economizer 22 .

[0085] Economizer 22 has a cooling function and can be used to subcool the incoming liquid, thereby reducing the liquid's temperature to below the saturation temperature at the corresponding condensing pressure. For example, economizer 22 can be used to subcool the incoming first liquid refrigerant to produce a low-temperature, high-pressure second liquid refrigerant.

[0086] The economizer 22 is connected to the plurality of evaporators 23 , respectively.

[0087] The economizer 22 may transmit the second liquid refrigerant after the subcooling process to the plurality of evaporators 23 .

[0088] The evaporator 23 has the functions of evaporation and heat absorption. In the evaporator 23, the second liquid refrigerant can absorb the surrounding heat and cool the environment. After the second liquid refrigerant absorbs the heat, the second liquid refrigerant is converted from liquid to gaseous first gaseous refrigerant.

[0089] There may be multiple evaporators 23 , and each evaporator 23 is connected to the economizer 22 and the compression condensation component 21 respectively.

[0090] The evaporator 23 can return the first gaseous refrigerant after the evaporation and heat absorption process to the compression and condensation component 21, thereby performing a circulation process.

[0091] The control device 24 has a control function for controlling the flow rate of the second liquid refrigerant entering each evaporator 23 , that is, the control device 24 can control the flow rate of the second liquid refrigerant delivered by the economizer 22 to each evaporator 23 .

[0092] The control device 24 is connected to the economizer 22 .

[0093] Next, the working process of the refrigeration equipment 20 is described:

[0094] The compression condensing component 21 may convert the first gaseous refrigerant into a high-pressure first liquid refrigerant through pressurization and condensation processes, and transmit the first liquid refrigerant to the economizer 22 .

[0095] After receiving the first liquid refrigerant, the economizer 22 cools the first liquid refrigerant to obtain a cooled low-temperature and high-pressure second liquid refrigerant, and transports the second liquid refrigerant to the multiple evaporators 23 .

[0096] The control device 24 can control the flow rate of the second liquid refrigerant delivered by the economizer 22 to each evaporator 23 based on data such as temperature and pressure.

[0097] Each evaporator 23 receives the second liquid refrigerant, absorbs ambient heat through the second liquid refrigerant, and evaporates the second liquid refrigerant, allowing the second liquid refrigerant to fully absorb heat. Through the evaporation process, the second liquid refrigerant is converted into the first gaseous refrigerant, which is then returned to the compression and condensation component 21 for a circulating refrigeration process.

[0098] The refrigeration equipment 20 shown in the embodiment of the present application includes a compression and condensation component 21, an economizer 22, multiple evaporators 23, and a control device 24. The compression and condensation component 21 has the functions of increasing pressure and liquefying, and can be used to pressurize and liquefy the input first gaseous refrigerant, thereby obtaining a high-pressure first liquid refrigerant. The economizer 22 has the function of cooling, and can be used to supercool the input first liquid refrigerant, thereby obtaining a low-temperature, high-pressure second liquid refrigerant. The evaporator 23 has the functions of evaporation and heat absorption. Within the evaporator 23, the second liquid refrigerant can absorb ambient heat and cool the environment. After absorbing heat, the second liquid refrigerant is converted from liquid to gaseous first gaseous refrigerant. The control device 24 has the function of controlling the flow rate of the second liquid refrigerant delivered by the economizer 22 to each evaporator 23. Thus, compared to the method of configuring one economizer for each evaporator, only one economizer 22 is provided, and the flow rate of the second liquid refrigerant within the economizer 22 to multiple evaporators 23 is controlled by the control device 24, thereby reducing costs.

[0099] Based on any of the above embodiments, Figure 3 The refrigeration equipment is further described.

[0100] Figure 3 This is a schematic diagram of the structure of another refrigeration device provided in the embodiment of this application. Figure 3 ,exist Figure 2 As shown, the compression and condensation component 21 further includes a compressor 211 and a condenser 212 .

[0101] The compressor 211 has a pressurizing function and can be used to compress the gas input to the compressor 211. For example, the compressor 211 can compress the input first gaseous refrigerant to obtain a second gaseous refrigerant in a high-pressure state.

[0102] The compressor 211 is connected to the condenser 212 and the evaporator 23 respectively.

[0103] The compressor 211 may transfer the second gaseous refrigerant to the condenser 212 .

[0104] The condenser 212 has a condensing function and can be used to condense the gas input into the condenser 212 into liquid. For example, the condenser 212 can condense the input second gaseous refrigerant to obtain a high-pressure first liquid refrigerant.

[0105] The condenser 212 is connected to the economizer 22 and can transmit the first liquid refrigerant to the economizer 22 .

[0106] Next, combine Figure 4 , the structure of the refrigeration equipment 20 is described through a specific example.

[0107] Figure 4 For a structural diagram of another refrigeration device provided in an embodiment of the present application, see Figure 4 ,exist Figure 3 On the basis of what is shown, the refrigeration equipment 20 further includes: an oil separator 213 .

[0108] The oil separator 213 has a separation function and can be used to separate impurities. The oil separator 213 can be used to separate impurities in the second gas refrigerant input into the oil separator 213. The impurities in the second gas refrigerant can be lubricating oil carried out from the compressor 211.

[0109] The oil separator 213 is connected to the compressor 211 and the condenser 212 respectively.

[0110] exist Figure 3 and Figure 4In the illustrated embodiment, the refrigeration device 20 further includes a compressor 211, a condenser 212, and an oil separator 213. The compressor 211 compresses a first gaseous refrigerant and compresses it to produce a high-pressure second gaseous refrigerant. The condenser 212 condenses the second gaseous refrigerant and condenses it to produce a high-pressure first liquid refrigerant. The oil separator 213 separates impurities from the second gaseous refrigerant entering the oil separator 213. Thus, through the combined action of the compressor 211, the condenser 212, and the oil separator 213, the first gaseous refrigerant can be converted into a high-pressure first liquid refrigerant free of impurities, thereby improving refrigeration efficiency.

[0111] Based on any of the above embodiments, Figure 5 , the structure of the refrigeration equipment 20 is described through a specific example.

[0112] Figure 5 For a structural diagram of another refrigeration device provided in an embodiment of the present application, see Figure 5 The refrigeration equipment 20 further includes: a plurality of liquid outlets 221 and a plurality of first pipes 231 .

[0113] A plurality of liquid outlets 221 are provided on the economizer 22 .

[0114] The liquid outlet 221 has an output function, and is used to output the second liquid refrigerant in the economizer 22 .

[0115] The first pipe 231 has a transmission function and is used to connect the liquid outlet 221 and the evaporator 23 , and transmit the second liquid refrigerant in the economizer 22 to the evaporator 23 .

[0116] The plurality of liquid outlets 221 and the plurality of evaporators 23 are connected through a plurality of first pipes 231 , and the plurality of liquid outlets 221 and the plurality of evaporators 23 correspond one to one.

[0117] Next, combine Figure 6 , the structure of the refrigeration equipment 20 is described through a specific example.

[0118] Figure 6 For a structural diagram of another refrigeration device provided in an embodiment of the present application, see Figure 6 ,exist Figure 5 On the basis of what is shown, the refrigeration equipment 20 further includes: a plurality of first regulating valves 2311 , a plurality of temperature sensors 2312 and a control device 24 .

[0119] The plurality of first regulating valves 2311 and the plurality of temperature sensors 2312 are respectively disposed on the plurality of first pipes 231 .

[0120] The first regulating valve 2311 has a regulating function and can be used to adjust the flow of the first pipeline 231. For example, the first regulating valve 2311 can adjust the flow of the second liquid refrigerant entering the evaporator 23 from the economizer 22.

[0121] The first regulating valve 2311 is disposed on the first pipeline 231 , that is, each first pipeline 231 is provided with a first regulating valve 2311 .

[0122] The temperature sensor 2312 has a temperature detection function and can be used to detect temperature. For example, the temperature sensor 2312 can be used to detect the temperature of the second liquid refrigerant in the first pipe 231.

[0123] The temperature sensor 2312 is disposed on the first pipe 231 , that is, each first pipe 231 is provided with a temperature sensor 2312 .

[0124] The control device 24 is connected to each first regulating valve 2311 respectively, and the control device 24 is also connected to each temperature sensor 2312 respectively.

[0125] The control device 24 may obtain the temperature of the second liquid refrigerant in the first pipe 231 detected by each temperature sensor 2312 , and adjust the first regulating valve 2311 corresponding to the first pipe 231 according to the temperature of the second liquid refrigerant.

[0126] Optionally, the logic for the control device 24 to adjust the first regulating valve 2311 corresponding to the first pipe 231 based on the temperature of the second liquid refrigerant may be as follows: for any temperature sensor 2312, the control device 24 obtains the temperature of the second liquid refrigerant detected by the temperature sensor 2312. If the temperature is greater than or equal to a preset temperature, the control device 24 controls the first regulating valve 2311 corresponding to the temperature sensor 2312 to increase the flow rate; if the temperature is less than the preset temperature, the control device 24 controls the first regulating valve 2311 corresponding to the temperature sensor 2312 to decrease the flow rate. The preset temperature may be a value set in advance by the user in the control device 24, for example, the preset temperature may be 0 degrees.

[0127] exist Figure 5 and Figure 6In the illustrated embodiment, the refrigeration device 20 further includes: a plurality of liquid outlets 221 and a plurality of first pipes 231. The liquid outlets 221 function as an outlet, discharging the second liquid refrigerant from the economizer 22; the first pipes 231 function as a transmission pipe, connecting the liquid outlets 221 and the evaporator 23 and transmitting the second liquid refrigerant from the economizer 22 to the evaporator 23. The refrigeration device 20 further includes a plurality of first regulating valves 2311 and a plurality of temperature sensors 2312. The first regulating valves 2311 function as a regulator, adjusting the flow rate of the second liquid refrigerant from the economizer 22 into the evaporator 23; and the temperature sensors 2312 function as temperature sensors, detecting the temperature of the second liquid refrigerant in the first pipes 231. Furthermore, the control device 24 is connected to each first regulating valve 2311 and each temperature sensor 2312. This allows the control device 24 to obtain the temperature of the second liquid refrigerant in the first pipe 231 as detected by each temperature sensor 2312 and adjust the corresponding first regulating valve 2311 in the first pipe 231 based on the temperature of the second liquid refrigerant. With this structure, when the economizer 22 transmits the second liquid refrigerant to the multiple evaporators 23 through the multiple first pipes 231, the control device 24 can obtain the temperature of the second liquid refrigerant using the temperature sensors 2312 on the first pipes 231, thereby controlling the flow rate of the first regulating valve 2311. This improves the efficiency of the refrigeration equipment 20. Furthermore, regulating the flow rate through the first regulating valve 2311 prevents temperature and pressure fluctuations caused by uneven liquid supply to the evaporators 23, thereby improving the stability of the refrigeration equipment 20.

[0128] Based on any of the above embodiments, Figure 7 , the structure of the refrigeration equipment 20 is described through a specific example.

[0129] Figure 7 For a structural diagram of another refrigeration device provided in an embodiment of the present application, see Figure 7 ,exist Figure 4 On the basis of what is shown, the refrigeration equipment 20 further includes: a gas-liquid separator 232 .

[0130] The gas-liquid separator 232 has a separation function and can be used to separate the liquid in the first gaseous refrigerant output by the evaporator 23 and transmit the separated first gaseous refrigerant to the compressor 211; the gas-liquid separator 232 can also be used to separate the gas in the second liquid refrigerant output by the economizer 22 and transmit the separated second liquid refrigerant to multiple evaporators 23.

[0131] The gas-liquid separator is connected to the plurality of evaporators 23 , the compressor 211 , and the economizer 22 , respectively.

[0132] exist Figure 7 In the illustrated embodiment, the refrigeration equipment 20 further includes a gas-liquid separator 232. The gas-liquid separator 232 has a separation function, capable of separating liquid from the first gaseous refrigerant output by the evaporator 23 and gas from the second liquid refrigerant output by the economizer 22. Thus, the gas-liquid separator 232 separates the gas and liquid. This ensures that the first gaseous refrigerant entering the compressor 211 is free of liquid, ensuring normal compression. Furthermore, it eliminates gas from the second liquid refrigerant entering each evaporator 23, preventing reduced refrigeration efficiency due to the presence of gas, as well as pressure fluctuations and cavitation caused by gas accumulation.

[0133] Based on any of the above embodiments, Figure 8 , the structure of the refrigeration equipment 20 is described through a specific example.

[0134] Figure 8 For a schematic diagram of the economizer provided in this application embodiment, see Figure 8 The economizer 22 further includes: a liquid level sensor 222 and a pressure sensor 223 .

[0135] The liquid level sensor 222 and the pressure sensor 223 are both provided on the economizer 22 .

[0136] The liquid level sensor 222 has a liquid level detection function and is used to detect the liquid level height. For example, the liquid level sensor 222 can be used to detect the liquid level height information in the economizer 22.

[0137] The liquid level sensor 222 may be provided on a side of the economizer 22 .

[0138] The pressure sensor 223 has a pressure detection function and is used to detect pressure information. For example, the pressure sensor 223 can be used to detect pressure information in the economizer 22.

[0139] The control device 24 is connected to the liquid level sensor 222 and the pressure sensor 223 respectively.

[0140] The control device 24 may obtain liquid level information in the economizer 22 based on the liquid level sensor 222 .

[0141] The control device 24 may obtain pressure information in the economizer 22 according to the pressure sensor 223 .

[0142] Next, combine Figure 9 , the structure of the refrigeration equipment 20 is described through a specific example.

[0143] Figure 9For a schematic diagram of another economizer provided in the embodiment of this application, see Figure 9 ,exist Figure 8 On the basis of what is shown, the economizer 22 further includes a safety valve 224 .

[0144] The safety valve 224 has a pressure regulating function and can be used to adjust the pressure in the economizer 22 .

[0145] The safety valve 224 is located on the economizer 22 and is also connected to the control device 24 .

[0146] The control device 24 may control the safety valve 224 according to the pressure information in the economizer 22 detected by the pressure sensor 223 .

[0147] Optionally, the control logic for the control device 24 to control the safety valve 224 may be as follows: the control device 24 detects pressure information within the economizer 22 based on the pressure sensor 223. If the pressure within the economizer 22 is greater than or equal to a preset pressure, the control device 24 controls the safety valve 224 to open, thereby discharging excess pressure within the economizer 22. If the pressure within the economizer 22 is less than the preset pressure, the control device 24 does not control the safety valve 224. The preset pressure may be a pressure value preset by the user.

[0148] Figure 10 For a schematic diagram of another economizer provided in the embodiment of this application, see Figure 10 ,exist Figure 9 On the basis of what is shown, the economizer 22 further includes: a liquid inlet 225 and a second regulating valve 226 .

[0149] The liquid inlet 225 is provided on the economizer 22 .

[0150] The liquid inlet 225 has an input function, and is used to input external liquid into the economizer 22. For example, the first liquid refrigerant can be input into the economizer 22 through the liquid inlet 225.

[0151] The second regulating valve 226 is disposed on the liquid inlet 225 .

[0152] The second regulating valve 226 has a regulating function, and is used to adjust the flow rate entering the economizer 22. For example, it can be used to adjust the flow rate of the first liquid refrigerant input into the economizer 22.

[0153] The second regulating valve 226 is connected to the control device 24 .

[0154] The control device 24 may control the second regulating valve 226 according to the liquid level information in the economizer 22 detected by the liquid level sensor 222 .

[0155] Optionally, the control logic for the control device 24 to control the second regulating valve 226 may be as follows: the control device 24 detects liquid level information within the economizer 22 using the liquid level sensor 222. If the liquid level within the economizer 22 is greater than or equal to a preset level, the control device 24 controls the second regulating valve 226 to reduce the flow rate, thereby draining excess liquid within the economizer 22. If the liquid level within the economizer 22 is less than the preset level, the control device 24 controls the second regulating valve 226 to increase the flow rate. The preset level may be a liquid level value preset by the user.

[0156] exist Figure 8 、 Figure 9 and Figure 10 In the illustrated embodiment, the economizer 22 further includes a liquid level sensor 222 and a pressure sensor 223. The liquid level sensor 222 detects the liquid level within the economizer 22; the pressure sensor 223 detects the pressure within the economizer 22. The economizer 22 also includes a safety valve 224, a liquid inlet 225, and a second regulating valve 226. The safety valve 224 regulates the pressure within the economizer 22; the liquid inlet 225 allows the first liquid refrigerant to be introduced into the economizer 22; and the second regulating valve 226 regulates the flow of the first liquid refrigerant into the economizer 22. In this way, by setting up the liquid level sensor 222 and the pressure sensor 223, the control device 24 can detect the liquid level information and pressure information in the economizer 22, and control the safety valve 224 and the second regulating valve 226 according to the liquid level information and pressure information, thereby ensuring the refrigeration efficiency and operation stability of the economizer 22.

[0157] The above is a detailed introduction to a refrigeration device provided by the present application. Specific examples are used herein to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only intended to help understand the method and core ideas of the present application. It should be noted that, for those skilled in the art, without departing from the principles of the present application, several improvements and modifications can be made to the present application, and these improvements and modifications also fall within the scope of protection of the claims of the present application.

[0158] Finally, it should be noted that other embodiments of the present invention will readily occur to those skilled in the art after considering the specification and practicing the application disclosed herein. This application is intended to cover any variations, uses, or adaptations of the present invention that follow the general principles of this application and include common knowledge or customary techniques in the art not disclosed herein. It is not limited to the precise structure described above and shown in the drawings, and various modifications and variations may be made without departing from the scope of this application. The scope of this application is limited solely by the appended claims.

Claims

1. A refrigeration device, characterized in that: include: Compression condensing unit, economizer, multiple evaporators and control device, wherein, The compression condensing component is connected to the economizer, and is used to convert the first gaseous refrigerant into a first liquid refrigerant and transmit the first liquid refrigerant to the economizer; The economizer is connected to the plurality of evaporators, and is used to cool the first liquid refrigerant to obtain a second liquid refrigerant, and transmit the second liquid refrigerant to the plurality of evaporators; The control device is connected to the economizer, and the control device is used to control the flow rate of the second liquid refrigerant entering each evaporator; The evaporator is also connected to the compression condensation component, and is used to convert the second liquid refrigerant into a first gaseous refrigerant and transmit the first gaseous refrigerant to the compression condensation component.

2. The device according to claim 1, characterized in that The compression and condensation components include a compressor and a condenser, wherein: The compressor is used to compress the first gas refrigerant to obtain a second gas refrigerant, and transmit the second gas refrigerant to the condenser; The condenser is used to condense the second gas refrigerant to obtain a first liquid refrigerant.

3. The device according to claim 1, characterized in that The refrigeration equipment further comprises an oil separator, wherein: The oil separator is connected to the compressor and the condenser respectively; The oil separator is used to separate impurities from the second gas refrigerant transmitted from the compressor to the condenser.

4. The device according to any one of claims 1 to 3, characterized in that The economizer is provided with a plurality of liquid outlets, wherein: The plurality of liquid outlets are connected to the plurality of evaporators, and the plurality of liquid outlets correspond one to one to the plurality of evaporators; The economizer transmits the second liquid refrigerant to the plurality of evaporators based on a plurality of liquid outlets.

5. The device according to claim 4, characterized in that The refrigeration equipment further comprises a plurality of first pipelines, each of which further comprises a first regulating valve, wherein: The plurality of liquid outlets are connected to the plurality of evaporators through the plurality of first pipes; The control device is respectively connected to a plurality of first regulating valves; The control device controls the flow rate of the second liquid refrigerant entering each evaporator by controlling the multiple first regulating valves.

6. The device according to claim 5, characterized in that The first pipe is also provided with a temperature sensor, wherein: The temperature sensor is connected to the control device; The control device detects the temperature of the second liquid refrigerant in the first pipe based on the temperature sensor; The control device controls the plurality of first regulating valves based on the temperature of the second liquid refrigerant.

7. The device according to any one of claims 1 to 3, characterized in that The refrigeration equipment further includes a gas-liquid separator, wherein: The gas-liquid separator is connected to the multiple evaporators, and the gas-liquid separator is also connected to the compressor; The gas-liquid separator is used to separate the liquid in the first gaseous refrigerant output by the evaporator.

8. The device according to any one of claims 1 to 3, characterized in that The economizer further includes a liquid level sensor and a pressure sensor, wherein: The control device is connected to the liquid level sensor and the pressure sensor respectively; The control device detects liquid level information in the economizer based on the liquid level sensor, and detects pressure in the economizer based on the pressure sensor.

9. The device according to claim 8, characterized in that The economizer further includes a safety valve, wherein: The control device is connected to the safety valve; The control device controls the safety valve based on the pressure in the economizer detected by the pressure sensor.

10. The device according to claim 8, characterized in that The economizer further includes a liquid inlet, which is provided with a second regulating valve, wherein: The control device is connected to the second regulating valve; The second regulating valve is used to control the flow rate of the first liquid refrigerant entering the economizer; The control device controls the second regulating valve based on liquid level information in the economizer detected by the liquid level sensor.

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