Refrigeration equipment

Abstract

Power supply ends of a compressor, a fan and a water pump of the refrigeration equipment are all connected with a power supply device, grounding ends of the compressor, the fan and the water pump are all suspended, and the compressor sucks a gaseous refrigerant from an evaporator, compresses the gaseous refrigerant and then transmits the gaseous refrigerant to a condenser. The air cooling and the water cooling are respectively carried out on the gaseous refrigerant in the condenser by the fan and the water pump, and the cooled liquid refrigerant is transmitted to the evaporator, absorbs the heat of the cooled space and is evaporated into the gaseous refrigerant, namely, the temperature regulation of the cooled space is realized through the circulation of the refrigerant. It can be seen that the compressor, the draught fan and the water pump are matched with one another, the grounding ends of the compressor, the draught fan and the water pump are all suspended, cooling of the cooled space can be achieved, charging of parasitic capacitors of the grounding ends of the compressor, the draught fan and the water pump can be avoided, then the current flowing through the capacitor is reduced, and therefore the leakage current of the refrigeration equipment can be reduced; therefore, the refrigeration equipment is protected, and the personnel safety is guaranteed.

Description

Technical Field

[0001] The invention relates to the technical field of leakage protection, and in particular to a refrigeration device. Background Art

[0002] In the existing system, some refrigeration equipment achieves cooling of the cooled space through the cooperation between fans, water pumps and compressors.

[0003] In the process of implementing the invention of this application, the inventors found that there are at least the following problems in the prior art:

[0004] If there is ground leakage current during the operation of the refrigeration equipment, it will not only cause malfunction of the refrigeration equipment itself, but also pose a threat to the safety of people near the refrigeration equipment. Summary of the invention

[0005] The object of the present invention is to provide a refrigeration device, which can reduce the leakage current of the refrigeration device, so as to protect the refrigeration device and ensure the safety of personnel.

[0006] In order to solve the above technical problems, the present invention provides a refrigeration device, including a compressor, a fan, a water pump, a condenser and an evaporator; the power supply ends of the compressor, the fan and the water pump are all connected to the power supply device, and the grounding ends are all suspended;

[0007] The compressor is used to absorb gaseous refrigerant from the evaporator, compress the gaseous refrigerant and transmit it to the condenser;

[0008] The fan is used to perform air cooling on the gaseous refrigerant in the condenser, and the water pump is used to perform water cooling on the gaseous refrigerant in the condenser, so as to transfer the cooled liquid refrigerant to the evaporator, so that the liquid refrigerant absorbs heat from the cooled space in the evaporator and evaporates into the gaseous refrigerant.

[0009] Optionally, it also includes:

[0010] The main control board has a power supply end connected to the power supply device and a grounding end connected to the ground wire, and is used to control the start and stop of the compressor, the fan and the water pump based on the refrigeration instruction after power-on, so that the temperature of the cooled space is the temperature corresponding to the refrigeration instruction.

[0011] Optionally, it also includes:

[0012] A dry contact connected between the power supply end of the compressor and the power supply device, between the power supply end of the fan and the power supply device, and between the power supply end of the water pump and the power supply device;

[0013] The main control board is specifically used to control the on and off of the dry contact based on the refrigeration instruction after power-on, so as to control the start and stop of the compressor, the fan and the water pump, so that the temperature of the cooled space is the temperature corresponding to the refrigeration instruction.

[0014] Optionally, it also includes:

[0015] A leakage current detection device, connected to the housing of the refrigeration device and to the main control board, for detecting whether there is leakage current in the housing of the refrigeration device;

[0016] The main control board is also used to control the dry contact to be turned off when the leakage current detection device detects that there is leakage current in the housing of the refrigeration equipment.

[0017] Optionally, it also includes:

[0018] an electronic expansion valve connected between the condenser and the evaporator;

[0019] The main control board is further used to adjust the opening of the electronic expansion valve based on the cooling instruction to adjust the flow rate of the refrigerant between the condenser and the evaporator so that the temperature of the cooled space is a temperature corresponding to the cooling instruction.

[0020] Optionally, it also includes:

[0021] The host computer is connected to the main control board and is used to obtain and monitor the operating status of the compressor, the fan and the water pump through the main control board.

[0022] Optionally, it also includes:

[0023] A temperature sensor, connected to the main control board, for collecting the temperature of the cooled space;

[0024] The main control board is also used to determine whether the temperature of the cooled space is consistent with the temperature corresponding to the refrigeration instruction. If they are inconsistent, the start and stop of the compressor, the fan and the water pump are controlled to make the temperature of the cooled space the temperature corresponding to the refrigeration instruction.

[0025] Optionally, it also includes:

[0026] The filter, whose first end is connected to the power supply device, whose second end is connected to the power supply end of the compressor, the fan and the water pump, and whose ground end is connected to the ground wire, is used to filter the power supply voltage of the compressor, the fan and the water pump.

[0027] Optionally, the housing of the refrigeration device is a housing made of flame-retardant insulating material.

[0028] Optionally, a contact distance between the compressor, the fan, the water pump and a housing of the refrigeration device is greater than a preset distance.

[0029] Compared with the prior art, the refrigeration equipment provided by the present application has at least the following beneficial effects:

[0030] The present application provides a refrigeration device, the power supply ends of the compressor, fan and water pump of the refrigeration device are all connected to the power supply device, and the grounding ends are all suspended. The compressor inhales gaseous refrigerant from the evaporator, compresses the gaseous refrigerant and transmits it to the condenser, and then the fan and water pump respectively perform air cooling and water cooling on the gaseous refrigerant in the condenser, and the cooled liquid refrigerant is transmitted to the evaporator, absorbs the heat of the cooled space and evaporates into gaseous refrigerant, that is, through the circulation of the refrigerant, the temperature of the cooled space is regulated. It can be seen that the compressor, fan and water pump cooperate with each other, and the grounding ends are all suspended, which can not only realize the cooling of the cooled space, but also avoid the charging of the parasitic capacitance of the grounding ends of the compressor, fan and water pump, thereby reducing the current flowing through the capacitor by the current, so as to reduce the leakage current of the refrigeration equipment, so as to realize the protection of the refrigeration equipment and the guarantee of personnel safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0032] Figure 1 A schematic diagram of the structure of a refrigeration device provided for this application;

[0033] Figure 2 It is a schematic diagram of the internal connection of a refrigeration device in the prior art;

[0034] Figure 3 A schematic diagram of the internal connections of the refrigeration equipment provided for this application;

[0035] Figure 4 A schematic diagram of the structure of a specific refrigeration equipment provided in this application. DETAILED DESCRIPTION

[0036] The core of the present invention is to provide a refrigeration equipment, in which the compressor, fan and water pump cooperate with each other, and the grounding terminals are all suspended, which can not only achieve the cooling of the cooled space, but also avoid the charging of the parasitic capacitance of the grounding terminals of the compressor, fan and water pump, thereby reducing the current flowing through the capacitor, thereby reducing the leakage current of the refrigeration equipment, thereby achieving the protection of the refrigeration equipment and ensuring the safety of personnel.

[0037] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0038] Please refer to Figure 1 , Figure 1 A schematic diagram of the structure of a refrigeration device provided in this application, including a compressor 1, a fan 2, a water pump 3, a condenser 4 and an evaporator 5; the power supply ends of the compressor 1, the fan 2 and the water pump 3 are all connected to the power supply device, and the grounding ends are all suspended;

[0039] The compressor 1 is used to absorb the gaseous refrigerant from the evaporator 5, compress the gaseous refrigerant and transmit it to the condenser 4;

[0040] The fan 2 is used to perform air cooling on the gaseous refrigerant in the condenser 4, and the water pump 3 is used to perform water cooling on the gaseous refrigerant in the condenser 4, so as to transfer the cooled liquid refrigerant to the evaporator 5, so that the liquid refrigerant absorbs the heat of the cooled space in the evaporator 5 and evaporates into gaseous refrigerant.

[0041] When the refrigeration equipment is working, the refrigerant circulates between the compressor 1, the condenser 4 and the evaporator 5. In the evaporator 5, the refrigerant is in a gaseous state. The compressor 1 inhales the gaseous refrigerant from the evaporator 5, compresses the gaseous refrigerant and transmits it to the condenser 4. The high-temperature and high-pressure gaseous refrigerant in the condenser 4 is cooled and condensed by the fan 2 and the water pump 3, that is, the refrigerant is cooled into a liquid state and transmitted to the evaporator 5. The liquid refrigerant absorbs the heat of the cooled space in the evaporator 5 and is evaporated into a gaseous refrigerant, which is then inhaled into the compressor 1 again to realize the circulation of the refrigerant. In the prior art, the compressor 1, the fan 2 and the water pump 3 are powered by a power supply device, and the ground terminal is directly grounded. However, since there is parasitic capacitance between the compressor 1, the fan 2 and the water pump 3 and the ground wire, the parasitic capacitance will be charged during the operation of the compressor 1, the fan 2 and the water pump 3. Therefore, current will cross the parasitic capacitance and generate leakage current. When the leakage current is too large, it will affect the normal operation of the compressor 1, the fan 2 and the water pump 3. More seriously, it may pose a threat to personnel safety when personnel accidentally touch the refrigeration equipment.

[0042] In order to effectively solve the above technical problems, the compressor 1, fan 2 and water pump 3 in this embodiment are not directly grounded, but the grounding end is suspended, that is, the compressor 1, fan 2 and water pump 3 are floated. Based on this, the parasitic capacitance between the compressor 1, fan 2 and water pump 3 and the grounding wire will not be charged, so the setting of the parasitic capacitance between the compressor 1, fan 2 and water pump 3 and the grounding wire can be omitted, thereby avoiding the generation of leakage current due to the current crossing the capacitor after the compressor 1, fan 2 and water pump 3 are grounded.

[0043] Specifically, the grounding ends of the compressor 1, the fan 2 and the water pump 3 are not only suspended in the air, but also do not directly contact the board grounding wire of the refrigeration equipment. For example, the distance between the grounding wire and the board is greater than a preset distance, so as to prevent the compressor 1, the fan 2 and the water pump 3 from accidentally contacting the board grounding wire and forming a loop between the ground wire to generate leakage current.

[0044] In summary, the present application includes a compressor 1, a fan 2 and a water pump 3. The power supply ends of the compressor 1, the fan 2 and the water pump 3 are all connected to the power supply equipment and powered by the power supply equipment. By suspending the grounding ends of the compressor 1, the fan 2 and the water pump 3, the charging of the parasitic resistance between the compressor 1, the fan 2 and the water pump 3 and the grounding wire is effectively avoided, and the current flowing through the capacitor is reduced, thereby reducing the leakage current of the compressor 1, the fan 2 and the water pump 3, so as to achieve protection of the compressor 1, the fan 2 and the water pump 3, and ensure the safety of personnel.

[0045] Based on the above embodiments:

[0046] As an optional embodiment, it also includes:

[0047] The main control board 6 has a power supply end connected to the power supply device and a grounding end connected to the ground wire, and is used to control the start and stop of the compressor 1, the fan 2 and the water pump 3 based on the refrigeration instruction after power-on, so that the temperature of the cooled space is the temperature corresponding to the refrigeration instruction.

[0048] Please refer to Figure 2 , Figure 2 The figure is a schematic diagram of the internal connection of a refrigeration device in the prior art.

[0049] Furthermore, since there is a Y capacitor to ground in the main control board 6 in the prior art, that is, Figure 2 In order to avoid leakage current caused by the current crossing the Y capacitor to the ground, the main control board 6 in this application is not connected to the Y capacitor to the ground, but directly connected to the ground line to reduce the generation of leakage current. Figure 3 , Figure 3 This is a schematic diagram of the internal connection of the refrigeration equipment provided in this application. In which, L is the live wire of the power supply equipment, and N is the neutral wire of the power supply equipment.

[0050] In addition, the temperature of the desired cooled space can be determined in advance, and a cooling instruction can be sent to the main control board 6. The main control board 6 can adjust the temperature of the cooled space by controlling the start and stop of the compressor 1, the fan 2 and the water pump 3 until the temperature of the cooled space is the temperature corresponding to the cooling instruction. For example, when the temperature of the cooled space is greater than the temperature corresponding to the cooling instruction, the compressor 1, the fan 2 and the water pump 3 are kept in the started state, that is, the refrigeration equipment continues to cool the cooled space; when the temperature of the cooled space is less than the temperature corresponding to the cooling instruction, the compressor 1, the fan 2 and the water pump 3 can be controlled to stop working for a period of time, that is, the refrigeration equipment stops cooling the cooled space, so that the cooled space is appropriately heated to the temperature corresponding to the cooling instruction.

[0051] As an optional embodiment, it also includes:

[0052] Dry contacts connected between the power supply end and the power supply device of the compressor 1, between the power supply end and the power supply device of the fan 2, and between the power supply end and the power supply device of the water pump 3;

[0053] The main control board 6 is specifically used to control the on and off of the dry contact based on the refrigeration instruction after power-on, so as to control the start and stop of the compressor 1, the fan 2 and the water pump 3, so that the temperature of the cooled space is the temperature corresponding to the refrigeration instruction.

[0054] In this embodiment, dry contacts are provided between the power supply end of the compressor 1 and the power supply device, between the power supply end of the fan 2 and the power supply device, and between the power supply end of the water pump 3 and the power supply device. The main control board 6 can control the on and off of the dry contacts to realize the control of the power supply and power off of the compressor 1, the fan 2 and the water pump 3. For example, when the control dry contact is turned off, the power supply device stops supplying power to the compressor 1, the fan 2 and the water pump 3, and the compressor 1, the fan 2 and the water pump 3 stop working; when the control dry contact is turned on, the power supply device starts supplying power to the compressor 1, the fan 2 and the water pump 3, and the compressor 1, the fan 2 and the water pump 3 start.

[0055] It should be noted that when the temperature of the cooled space is too low, the dry contact is controlled to be disconnected so that the compressor 1, fan 2 and water pump 3 stop working and the temperature of the cooled space is increased; when the temperature of the cooled space is too high, the dry contact is turned on to power the compressor 1, fan 2 and water pump 3 through the power supply equipment, and the parameters of the compressor 1, fan 2 and water pump 3 are adjusted so that the temperature of the cooled space is the temperature corresponding to the refrigeration instruction; or when the compressor 1, fan 2 or water pump 3 in the refrigeration equipment is abnormal, the main controller can also disconnect the dry contact to avoid greater damage.

[0056] In addition, the dry contact has a unified interface, is easy to connect, has strong anti-interference ability, and has a long service life.

[0057] As an optional embodiment, it also includes:

[0058] A leakage current detection device is connected to the housing of the refrigeration equipment and to the main control board 6, and is used to detect whether there is leakage current in the housing of the refrigeration equipment;

[0059] The main control board 6 is also used to control the dry contact to be turned off when the leakage current detection device detects that there is leakage current in the housing of the refrigeration equipment.

[0060] In the present embodiment, a leakage current detection device is additionally provided, that is, although the ground terminals of the compressor 1, the fan 2 and the water pump 3 are suspended in the present application, in order to further ensure the safe operation of the refrigeration equipment, the leakage current detection device detects whether there is leakage current in the casing of the refrigeration equipment. When the leakage current is detected, the main control board 6 promptly turns off the dry contact, stops powering the compressor 1, the fan 2 and the water pump 3, and stops the operation of the compressor 1, the fan 2 and the water pump 3, so as to protect the compressor 1, the fan 2 and the water pump 3 and protect the safety of personnel.

[0061] The leakage current detection device is specifically used to collect the current on the shell of the refrigeration device, and determine that there is leakage current in the shell of the refrigeration device when the current on the shell of the refrigeration device is greater than a preset current.

[0062] The leakage current detection device in this embodiment actually collects the current on the casing of the refrigeration equipment. Under normal circumstances, there is no current on the casing of the refrigeration equipment, that is, the current on the casing of the refrigeration equipment is not greater than the preset current. The preset current here is a pre-set smaller current that will not pose a safety threat to the equipment or personnel; however, when the current on the refrigeration equipment is greater than the preset current, it can be considered that there is a leakage current in the casing of the refrigeration equipment. The leakage current will not only affect the normal operation of the refrigeration equipment, but also pose a threat to the safety of personnel near the refrigeration equipment. Therefore, timely detecting the presence of leakage current and controlling the refrigeration equipment to stop working is an effective means to reduce personnel safety.

[0063] As an optional embodiment, it also includes:

[0064] An electronic expansion valve connected between the condenser 4 and the evaporator 5;

[0065] The main control board 6 is also used to adjust the opening of the electronic expansion valve based on the refrigeration instruction to adjust the flow of the refrigerant between the condenser 4 and the evaporator 5 so that the temperature of the cooled space is the temperature corresponding to the refrigeration instruction.

[0066] In this embodiment, the main controller can adjust the opening of the electronic expansion valve disposed between the condenser 4 and the evaporator 5. When the opening of the electronic expansion valve is larger, the amount of refrigerant flowing from the condenser 4 to the evaporator 5 is larger, and the degree of cooling the cooled space is greater; when the opening of the electronic expansion valve is smaller, the amount of refrigerant flowing from the condenser 4 to the evaporator 5 is smaller, and the degree of cooling the cooled space is smaller. Based on this, when the temperature of the cooled space is greater than the temperature corresponding to the refrigeration instruction, the opening of the electronic expansion valve can be increased to transfer more refrigerant to the evaporator 5 to absorb the heat of the cooled space; when the temperature of the cooled space is less than the temperature corresponding to the refrigeration instruction, the opening of the electronic expansion valve can be reduced to transfer less refrigerant to the evaporator 5 to absorb the heat of the cooled space.

[0067] As an optional embodiment, it also includes:

[0068] The host computer is connected to the main control board 6 and is used to obtain and monitor the operating status of the compressor 1 , the fan 2 and the water pump 3 through the main control board 6 .

[0069] The host computer and the main control board 6 in the present application can communicate with each other to obtain and monitor the operating status of the compressor 1, the fan 2 and the water pump 3, determine whether the compressor 1, the fan 2 and the water pump 3 are operating normally, and ensure the safe operation of the refrigeration equipment.

[0070] As an optional embodiment, it also includes:

[0071] A temperature sensor, connected to the main control board 6, for collecting the temperature of the cooled space;

[0072] The main control board 6 is also used to determine whether the temperature of the cooled space is consistent with the temperature corresponding to the refrigeration instruction. If not, the start and stop of the compressor 1, fan 2 and water pump 3 are controlled to make the temperature of the cooled space the temperature corresponding to the refrigeration instruction.

[0073] In the present application, a temperature sensor is provided to collect the temperature of the cooled space, so that the main control board 6 controls the start and stop of the compressor 1, the fan 2 and the water pump 3 to refer to when adjusting the temperature of the cooled space, and ensures that the temperature of the cooled space is the temperature corresponding to the refrigeration instruction. Specifically, if the temperature corresponding to the refrigeration instruction is 20°C and the temperature of the cooled space is 25°C, then the power of the compressor 1, the fan 2 and the water pump 3 can be increased to reduce the temperature of the cooled space to 20°C; or if the temperature corresponding to the refrigeration instruction is 20°C and the temperature of the cooled space is 15°C, then the power of the compressor 1, the fan 2 and the water pump 3 can be reduced, or the compressor 1, the fan 2 and the water pump 3 can be stopped for a period of time to increase the temperature of the cooled space to 20°C. It should also be noted that the maximum temperature threshold and the minimum temperature threshold can be set according to the temperature corresponding to the refrigeration instruction. When the temperature of the cooled space is lower than the minimum temperature threshold, the compressor 1, the fan 2 and the water pump 3 are controlled to increase the temperature of the cooling space. When the temperature of the cooled space is higher than the maximum temperature threshold, the compressor 1, the fan 2 and the water pump 3 are controlled to lower the temperature of the cooling space. When the temperature of the cooled space is between the maximum temperature threshold and the minimum temperature threshold, the refrigeration instruction is met.

[0074] As an optional embodiment, it also includes:

[0075] The first end is connected to the power supply equipment, the second end is connected to the power supply end of the compressor 1, the fan 2 and the water pump 3, and the filter 5 whose ground end is connected to the ground wire is used to filter the power supply voltage of the compressor 1, the fan 2 and the water pump 3.

[0076] In this embodiment, a filter 5 is also provided between the power supply device and the compressor 1, the fan 2 and the water pump 3, which can filter out the unstable voltage output by the power supply device to ensure stable power supply to the compressor 1, the fan 2 and the water pump 3, thereby improving the working efficiency of the compressor 1, the fan 2 and the water pump 3.

[0077] It should be noted that if Figure 2 As shown, there is also a Y capacitor to ground in the filter 5, that is, Figure 2 The filter Y capacitor between the filter 5 and the ground line PE, therefore, the ground end of the filter 5 in the present application is directly grounded and is not connected to the Y capacitor to ground, that is, the setting of the Y capacitor to ground is omitted, such as Figure 3As shown, the generation of leakage current due to the presence of the capacitor in the filter 5 is avoided.

[0078] In addition, please refer to Figure 4 , Figure 4 A schematic diagram of the structure of a specific refrigeration equipment provided in this application, in which an onboard relay can also be set between the filter 5 and the compressor 1, the fan 2 and the water pump 3, so that the main control board 6 can further control the power supply and power failure between the compressor 1, the fan 2 and the water pump 3.

[0079] As an optional embodiment, the housing of the refrigeration equipment is a housing made of flame-retardant insulating material.

[0080] In this embodiment, the shell of the refrigeration equipment is a shell of flame-retardant insulating material. This shell has excellent flame retardancy. The flame retardancy level can reach V0 level. A shell with a thickness of 1.5mm can meet the halogen-free flame retardant standard. It will extinguish immediately when away from the fire, effectively preventing the risk of fire caused by short circuit of wires. The shell of flame-retardant insulating material meets EU certification standards and will not release toxic gases during use. It is highly safe and environmentally friendly. The shell of flame-retardant insulating material has a high thermal deformation temperature and excellent heat resistance. The thermal deformation stability can reach 120°C and can maintain stable performance in high temperature environments. The shell of flame-retardant insulating material has Good electrical insulation performance, can maintain constant electrical insulation in a wide range of temperature and humidity to ensure safe electricity use; the shell of flame-retardant insulating material has good corrosion resistance and can be used for a long time in various environments without damage; the shell of flame-retardant insulating material has high mechanical strength and strong impact resistance, and can effectively resist collisions and impacts during daily use without damage or cracking; the shell of flame-retardant insulating material has good weather resistance, and its performance is stable and reliable after long-term use, and it will not discolor or fade; in addition, the shell of flame-retardant insulating material is more environmentally friendly and meets the requirements of sustainable development.

[0081] As an optional embodiment, the contact distance between the compressor 1, the fan 2 and the water pump 3 and the housing of the refrigeration equipment is greater than a preset distance.

[0082] In order to further avoid the generation of leakage current, in the present application, the contact distance between the compressor 1, fan 2 and water pump 3 and the casing of the refrigeration equipment is greater than the preset distance, so as to avoid the generation of current after the compressor 1, fan 2 and water pump 3 contact with the casing of the refrigeration equipment, thereby affecting personnel safety.

[0083] It should also be noted that, in this specification, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "comprises", "comprising" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the statement "comprising a ..." does not exclude the presence of other identical elements in the process, method, article or device including the element.

[0084] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A refrigeration device, characterized in that: It includes a compressor, a fan, a water pump, a condenser and an evaporator; the power supply ends of the compressor, the fan and the water pump are all connected to the power supply equipment, and the grounding ends are all suspended; The compressor is used to absorb gaseous refrigerant from the evaporator, compress the gaseous refrigerant and transmit it to the condenser; The fan is used to perform air cooling on the gaseous refrigerant in the condenser, and the water pump is used to perform water cooling on the gaseous refrigerant in the condenser, so as to transfer the cooled liquid refrigerant to the evaporator, so that the liquid refrigerant absorbs heat from the cooled space in the evaporator and evaporates into the gaseous refrigerant.

2. The refrigeration device according to claim 1, characterized in that: Also includes: The main control board has a power supply end connected to the power supply device and a grounding end connected to the ground wire, and is used to control the start and stop of the compressor, the fan and the water pump based on the refrigeration instruction after power-on, so that the temperature of the cooled space is the temperature corresponding to the refrigeration instruction.

3. The refrigeration device according to claim 2, characterized in that: Also includes: A dry contact connected between the power supply end of the compressor and the power supply device, between the power supply end of the fan and the power supply device, and between the power supply end of the water pump and the power supply device; The main control board is specifically used to control the on and off of the dry contact based on the refrigeration instruction after power-on, so as to control the start and stop of the compressor, the fan and the water pump, so that the temperature of the cooled space is the temperature corresponding to the refrigeration instruction.

4. The refrigeration device according to claim 3, characterized in that: Also includes: A leakage current detection device, connected to the housing of the refrigeration device and to the main control board, for detecting whether there is leakage current in the housing of the refrigeration device; The main control board is also used to control the dry contact to be turned off when the leakage current detection device detects that there is leakage current in the housing of the refrigeration equipment.

5. The refrigeration device according to claim 2, characterized in that: Also includes: an electronic expansion valve connected between the condenser and the evaporator; The main control board is further used to adjust the opening of the electronic expansion valve based on the cooling instruction to adjust the flow rate of the refrigerant between the condenser and the evaporator so that the temperature of the cooled space is a temperature corresponding to the cooling instruction.

6. The refrigeration device according to claim 2, characterized in that: Also includes: The host computer is connected to the main control board and is used to obtain and monitor the operating status of the compressor, the fan and the water pump through the main control board.

7. The refrigeration device according to claim 2, characterized in that: Also includes: A temperature sensor, connected to the main control board, for collecting the temperature of the cooled space; The main control board is also used to determine whether the temperature of the cooled space is consistent with the temperature corresponding to the refrigeration instruction. If they are inconsistent, the start and stop of the compressor, the fan and the water pump are controlled to make the temperature of the cooled space the temperature corresponding to the refrigeration instruction.

8. The refrigeration device according to claim 1, characterized in that: Also includes: The filter, whose first end is connected to the power supply device, whose second end is connected to the power supply end of the compressor, the fan and the water pump, and whose ground end is connected to the ground wire, is used to filter the power supply voltage of the compressor, the fan and the water pump.

9. The refrigeration device according to any one of claims 1 to 8, characterized in that: The shell of the refrigeration equipment is a shell made of flame-retardant insulating material.

10. The refrigeration device according to claim 9, characterized in that: The contact distance between the compressor, the fan, the water pump and the housing of the refrigeration equipment is greater than a preset distance.

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