A screw type water cooling unit with cooling and heating synchronization function and its use method

Abstract

The present invention discloses a screw-type water-cooling unit with a cooling and heating synchronization function and a method for using the same, and relates to the technical field of screw-type water-cooling units, including a collection module, wherein the collection module is used to obtain the temperature outside the screw-type water-cooling unit and the inlet and outlet temperatures of chilled water through a sensor. According to whether the external temperature obtained by the collection module exceeds or is lower than the set threshold data, the present invention automatically adjusts and switches the cooling mode or the heating mode through a logic judgment switching module, and during operation, when the external temperature exceeds or is lower than the dangerous threshold when the logic judgment switching module is closed, the emergency intervention module is used to send information to inform the user whether to continue to use the system at the temperature through an information warning module, and if the user fails to confirm the information within the set time, the emergency intervention module automatically starts the logic judgment switching module to switch the cooling or heating mode, thereby improving the safety of use.

Description

Technical Field

[0001] The invention relates to the technical field of screw type water cooling units, in particular to a screw type water cooling unit with cooling and heating synchronization functions and a use method thereof. Background Art

[0002] The screw chiller is named because its key component - the compressor adopts a screw type. The refrigerant coming out of the evaporator of the unit is in the state of gas, and the hot and cold synchronization function enables the screw water-cooling unit to automatically switch the cooling or heating mode according to the external temperature or user demand, thereby realizing the synchronous supply of cold and heat.

[0003] The defects of the existing screw water cooling unit are:

[0004] 1. Patent document JP2008038877A discloses a screw compressor, but the above document lacks a threshold module and an emergency intervention module. During use, especially when the temperature is higher or lower than the dangerous threshold, it still needs to be manually shut down or adjusted, which has a technical problem of low safety of use;

[0005] 2. Patent document US20080038127A1 discloses a screw compressor, but the above document cannot achieve the effect of synchronous supply of cold and hot, and there is a technical problem of energy waste when using it;

[0006] 3. Patent document CN207196987U discloses a screw chiller, but the screw chiller in the above document can only perform refrigeration operation, has a single function, and cannot cope with technical problems in different climatic conditions;

[0007] 4. Patent document CN220187128U discloses a high-efficiency screw chiller with good heat dissipation performance. However, the screw chiller in the above document cannot change the flow direction of the refrigerant by adjusting the four-way valve through the actuator according to the external temperature to achieve the switching of the condenser and evaporator functions. Therefore, there is a technical problem that the temperature cannot be flexibly adjusted. Summary of the invention

[0008] The object of the present invention is to provide a screw-type water-cooling unit with cooling and heating synchronization functions and a method of using the same, so as to solve the technical problems raised in the above-mentioned background technology.

[0009] To achieve the above object, the present invention provides the following technical solutions: a screw water cooling unit with a cooling and heating synchronization function, comprising a collection module, the collection module is used to obtain the temperature outside the screw water cooling unit and the chilled water inlet and outlet water temperatures, cooling water inlet and outlet water temperatures, evaporation pressure and condensation pressure data inside the screw water cooling unit through a sensor;

[0010] The acquisition module is electrically connected to a processor module and a temperature threshold module respectively. The temperature threshold module is used to send data for switching cooling or heating to the processor module when the acquired outdoor temperature is higher or lower than a set value. The processor module sends instructions to the PLC controller according to the acquired data. The PLC controller controls the actuator to switch the cooling or heating mode.

[0011] The processor module includes a logic judgment switching module, a manual switching module and an emergency intervention module. The logic judgment switching module is used to determine whether the cooling mode or heating module should be operated currently according to the acquired temperature data and the set parameters. The manual switching module is used to manually switch the cooling mode or heating mode. The emergency intervention module includes a shutdown module, an information warning module and a forced mode switching module. The shutdown module is used to stop the screw water cooling unit when a fault occurs or the operation is unstable. The information warning module is used to respond to the fault or unstable operation and send the operation data to the user. The forced mode switching module is used to manually switch the cooling mode or heating mode, and the indoor temperature exceeds the set danger threshold, and send information to the user through the information warning module. If no reply data is received within the set time, the cooling mode or heating module is automatically switched through the logic judgment switching module.

[0012] Preferably, the actuator includes a support frame, an evaporator is installed at the front end of the support frame, a condenser is installed at the rear end of the support frame, a four-way valve is installed on one side of the top of the support frame, and a first connection port, a second connection port, a third connection port and a fourth connection port are installed in sequence from one side to the other side of the top of the four-way valve.

[0013] Preferably, a return air port is installed on one side of one end of the evaporator, and the return air port is connected to one end of the first connecting port through a pipe, a refrigerant inlet is installed on the other side of one end of the evaporator, a chilled water inlet is installed on one side of the outer wall of the evaporator, and a chilled water outlet is installed on the other end of the evaporator.

[0014] Preferably, a screw compressor is installed on one side of the top of the evaporator through a bracket, a suction port is installed on one side of the outer wall of the screw compressor, and the suction port is installed at one end of the second connecting port through a pipe, a discharge port is installed on the other side of the outer wall of the screw compressor, the discharge port is connected to an oil separation box through a pipe, and the bottom of the oil separation box is installed at the middle of the top of the evaporator through a bracket, an output pipe is installed on one side of the outer wall of the oil separation box, and the output pipe is installed at one end of the third connecting port through a pipe.

[0015] Preferably, the screw compressor includes a transport channel, a threaded transport roller and a servo motor, and the servo motor is installed on one side of the transport channel, and the output end of the servo motor passes through one side of the transport channel and is installed with a threaded transport roller, and the outer wall of the threaded transport roller is installed inside the transport channel.

[0016] Preferably, a cooling water inlet is installed at the top of one end of the condenser, a cooling water outlet is installed at the other end of the condenser, a vent is installed in the middle of the top of the outer wall of the condenser, and the vent is installed at one end of the fourth connecting port through a pipe.

[0017] Preferably, a refrigerant outlet is installed at the bottom of one end of the condenser, an expansion valve is installed at one end of the refrigerant outlet, and the expansion valve is installed at one end of the refrigerant inlet through a pipeline.

[0018] Preferably, a control console is installed on the other side of the top of the condenser, a touch screen is embedded and installed on the outer wall of the control console, and the touch screen is bidirectionally electrically connected to the processor module.

[0019] Preferably, the working steps of the screw water cooling unit with cooling and heating synchronization function are as follows:

[0020] S1. According to whether the external temperature obtained by the acquisition module exceeds or is lower than the set threshold data, the switching module automatically adjusts the cooling mode or the heating mode through the logic judgment;

[0021] S2. During operation, after the user uses the manual switching module, the logic judgment switching module will be automatically closed, and the cooling and heating mode switching will be determined manually;

[0022] S3, when the emergency intervention module detects that the external temperature exceeds or falls below the danger threshold when the logic judgment switching module is closed, the information warning module can send information to inform the user to determine whether to continue to use it at that temperature;

[0023] S4: If the user fails to confirm the information within the set time, the emergency intervention module automatically starts the logic judgment switching module to switch the cooling or heating mode;

[0024] S5. Through the setting of the four-way valve, the flow direction of the refrigerant in the screw water cooling unit can be changed, so as to realize the interchange of the functions of the condenser and the evaporator, and then achieve the function of synchronous cooling and heating.

[0025] Preferably, the step S5 further includes the following steps:

[0026] S51, when refrigeration is performed, the evaporator generates gaseous refrigerant and delivers it to the four-way valve through the return port and the first connection port, and then delivers it to the screw compressor through the second connection port and the suction port. After compression by the screw compressor, the gaseous refrigerant is again delivered to the four-way valve through the output pipe of the oil separation box and the third connection port, and then delivered to the condenser through the fourth connection port and the vent port to form a high-pressure liquid refrigerant, and then the refrigerant is delivered to the evaporator through the refrigerant outlet and the expansion valve to absorb heat and evaporate for refrigeration;

[0027] S52. When heating is performed, the functions of the condenser and the evaporator are interchanged through the setting of the four-way valve. The condenser absorbs heat from the outdoor air, evaporates the refrigerant into a gaseous state, and transports it to the four-way valve through the air vent and the fourth connecting port. The gaseous refrigerant is then transported to the screw compressor through the setting of the second connecting port and the suction port. After compression by the screw compressor, the gaseous refrigerant is transported to the four-way valve again through the output pipe of the oil separation box and the setting of the third connecting port. Finally, it is transported to the evaporator through the setting of the first connecting port and the return air port, and heat is released and condensed through the evaporator, thereby meeting the heating demand.

[0028] Compared with the prior art, the present invention has the following beneficial effects:

[0029] 1. The present invention sets the logic judgment switching module, the manual switching module and the emergency intervention module included in the processor module. According to whether the external temperature obtained by the acquisition module exceeds or is lower than the set threshold data, the logic judgment switching module automatically adjusts and switches the cooling mode or the heating mode. In the operation process, after the user uses the manual switching module, the logic judgment switching module will be automatically closed, and the switching of the cooling and heating modes will be determined manually. The emergency intervention module is used to detect that the external temperature exceeds or is lower than the dangerous threshold when the logic judgment switching module is closed. The information warning module can send information to inform the user whether to continue to use it according to the temperature. If the user fails to confirm the information within the set time, the emergency intervention module automatically starts the logic judgment switching module to switch the cooling or heating mode, thereby improving the safety of use.

[0030] 2. The present invention can achieve the effect of synchronous supply of cold and hot by using a logic judgment switching module to automatically adjust and switch the setting of the cooling mode or the heating mode according to the external temperature change data, thereby avoiding unnecessary energy waste and improving the flexibility and applicability of the screw water cooling unit;

[0031] 3. The present invention can change the flow direction of the refrigerant in the screw water cooling unit through the setting of the four-way valve, thereby realizing the interchange of the functions of the condenser and the evaporator. Through this switching mechanism, the screw water cooling unit can flexibly respond to different climatic conditions and usage requirements, providing users with a comfortable indoor environment;

[0032] 4. Through the setting of the screw compressor 24 and its stable operating characteristics, it is possible to reduce the influence of external factors on it, thereby maintaining a long-term high-efficiency and stable operating state, which is beneficial to reducing the failure rate and improving its operating stability, thereby increasing the service life of the screw water-cooling unit. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 It is a schematic diagram of the system flow of the present invention;

[0034] Figure 2 It is a three-dimensional schematic diagram of the overall structure of the present invention;

[0035] Figure 3 It is a schematic diagram of the structure of the control console of the present invention;

[0036] Figure 4 It is a schematic diagram of the structure of the four-way valve of the present invention;

[0037] Figure 5 It is a schematic diagram of the structure of the four-way valve of the present invention;

[0038] Figure 6 It is a schematic diagram of the transport channel structure of the present invention;

[0039] Figure 7 It is a schematic diagram of the workflow of the present invention.

[0040] In the figure: 1. acquisition module; 2. processor module; 3. temperature threshold module; 4. PLC controller; 5. actuator; 6. logic judgment switching module; 7. manual switching module; 8. emergency intervention module; 9. shutdown module; 10. information warning module; 11. forced mode switching module; 12. support frame; 13. evaporator; 14. condenser; 15. four-way valve; 16. first connection port; 17. second connection port; 18. third connection port; 19. Four connection ports; 20, air return port; 21, refrigerant inlet; 22, chilled water inlet; 23, chilled water outlet; 24, screw compressor; 25, suction port; 26, discharge port; 27, oil separation box; 28, output pipe; 29, transport channel; 30, threaded transport roller; 31, servo motor; 32, cooling water inlet; 33, cooling water outlet; 34, air vent; 35, expansion valve; 36, control console; 37, touch screen; 38, refrigerant outlet. DETAILED DESCRIPTION

[0041] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only 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.

[0042] In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "two ends", "one end", "the other end" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0043] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0044] Example 1: Please refer to Figure 1 , an embodiment provided by the present invention: a screw water cooling unit with a cooling and heating synchronization function, comprising a collection module 1, the collection module 1 is used to obtain the temperature outside the screw water cooling unit and the chilled water inlet and outlet water temperatures, cooling water inlet and outlet water temperatures, evaporation pressure and condensation pressure data in the screw water cooling unit through a sensor;

[0045] The acquisition module 1 is electrically connected to the processor module 2 and the temperature threshold module 3 respectively. The temperature threshold module 3 is used to send the data of switching cooling or heating to the processor module 2 when the acquired outdoor temperature is higher or lower than the set value. The processor module 2 sends instructions to the PLC controller 4 according to the acquired data, and the PLC controller 4 controls the actuator 5 to switch the cooling or heating mode;

[0046] The processor module 2 includes a logic judgment switching module 6, a manual switching module 7 and an emergency intervention module 8. The logic judgment switching module 6 is used to determine whether the cooling mode or heating module should be operated currently according to the acquired temperature data and the set parameters. The manual switching module 7 is used to manually switch the cooling mode or heating mode. The emergency intervention module 8 includes a shutdown module 9, an information warning module 10 and a forced mode switching module 11. The shutdown module 9 is used to stop the screw water cooling unit when a fault occurs or the operation is unstable. The information warning module 10 is used to send the operation data to the user when a fault occurs or the operation is unstable. The forced mode switching module 11 is used to manually switch the cooling mode or heating mode, and the indoor temperature exceeds the set danger threshold, and send information to the user through the information warning module 10. If no reply data is received within the set time, the cooling mode or heating module is automatically switched through the logic judgment switching module 6;

[0047] Further, through the settings of the logic judgment switching module 6, the manual switching module 7 and the emergency intervention module 8 included in the processor module 2, according to whether the external temperature obtained by the acquisition module 1 exceeds or is lower than the set threshold data, the logic judgment switching module 6 automatically adjusts and switches the cooling mode or the heating mode, and during the operation, after the user uses the manual switching module 7, the logic judgment switching module 6 will be automatically closed, and the switching of the cooling and heating modes will be determined manually. The emergency intervention module 8 is used to detect that the external temperature exceeds or is lower than the dangerous threshold when the logic judgment switching module 6 is closed. The information warning module 10 can send information to inform the user whether to continue to use it according to the temperature. If the user does not confirm the information within the set time, the emergency intervention module 8 automatically starts the logic judgment switching module 6 to switch the cooling or heating mode, thereby improving the safety of use;

[0048] The dangerous temperature threshold refers to the temperature data that will affect the user's health if the human body is exposed to this temperature for a long time;

[0049] By using the logic judgment switching module 6 to automatically adjust the setting of the switching cooling mode or the heating mode according to the external temperature change data, the effect of synchronous supply of cold and hot can be achieved, thereby avoiding unnecessary energy waste and improving the flexibility and applicability of the screw water cooling unit.

[0050] Example 2: Please refer to Figure 2 , Figure 4 and Figure 5, an embodiment provided by the present invention: the actuator 5 includes a support frame 12, an evaporator 13 is installed at the front end of the support frame 12, a condenser 14 is installed at the rear end of the support frame 12, a four-way valve 15 is installed on one side of the top of the support frame 12, and a first connection port 16, a second connection port 17, a third connection port 18 and a fourth connection port 19 are installed in sequence from one side to the other side of the top of the four-way valve 15;

[0051] A return air port 20 is installed on one side of one end of the evaporator 13, and the return air port 20 is connected to one end of the first connecting port 16 through a pipeline, a refrigerant inlet 21 is installed on the other side of one end of the evaporator 13, a chilled water inlet 22 is installed on one side of the outer wall of the evaporator 13, and a chilled water outlet 23 is installed on the other end of the evaporator 13;

[0052] A screw compressor 24 is mounted on one side of the top of the evaporator 13 through a bracket, a suction port 25 is mounted on one side of the outer wall of the screw compressor 24, and the suction port 25 is mounted on one end of the second connecting port 17 through a pipeline, a discharge port 26 is mounted on the other side of the outer wall of the screw compressor 24, the discharge port 26 is connected to an oil separation box 27 through a pipeline, and the bottom of the oil separation box 27 is mounted on the middle of the top of the evaporator 13 through a bracket, an output pipe 28 is mounted on one side of the outer wall of the oil separation box 27, and the output pipe 28 is mounted on one end of the third connecting port 18 through a pipeline;

[0053] A cooling water inlet 32 ​​is installed at the top of one end of the condenser 14, a cooling water outlet 33 is installed at the other end of the condenser 14, a vent 34 is installed at the middle of the top of the outer wall of the condenser 14, and the vent 34 is installed at one end of the fourth connecting port 19 through a pipeline;

[0054] A refrigerant outlet 38 is installed at the bottom of one end of the condenser 14, an expansion valve 35 is installed at one end of the refrigerant outlet 38, and the expansion valve 35 is installed at one end of the refrigerant inlet 21 through a pipeline;

[0055] Furthermore, through the arrangement of the four-way valve 15, when performing refrigeration, the evaporator 13 will generate gaseous refrigerant which will be transported to the four-way valve 15 through the return port 20 and the first connection port 16, and then transported to the screw compressor 24 through the arrangement of the second connection port 17 and the suction port 25. After being compressed by the screw compressor 24, the gaseous refrigerant will be transported to the four-way valve 15 again through the arrangement of the output pipe 28 of the oil separation box 27 and the third connection port 18, and then transported to the condenser 14 through the arrangement of the fourth connection port 19 and the vent port 34 to form a high-pressure liquid refrigerant, and then the refrigerant will be transported to the evaporator 13 through the refrigerant outlet 38 and the expansion valve 35 to perform heat absorption evaporation for refrigeration.

[0056] When heating is performed, the functions of the condenser 14 and the evaporator 13 are interchanged through the setting of the four-way valve 15. The condenser 14 absorbs heat from the outdoor air, evaporates the refrigerant into a gaseous state, and delivers it to the four-way valve 15 through the vent 34 and the fourth connection port 19. The gaseous refrigerant is then delivered to the screw compressor 24 through the setting of the second connection port 17 and the suction port 25. After compression by the screw compressor 24, the gaseous refrigerant is delivered to the four-way valve 15 again through the setting of the output pipe 28 of the oil separation box 27 and the setting of the third connection port 18. Finally, the gaseous refrigerant is delivered to the evaporator 13 through the setting of the first connection port 16 and the return air port 20, and is condensed by the evaporator 13 to meet the heating demand.

[0057] By setting the four-way valve 15, the flow direction of the refrigerant in the screw water cooling unit can be changed, thereby realizing the interchange of the functions of the condenser 14 and the evaporator 13. Through this switching mechanism, the screw water cooling unit can flexibly respond to different climatic conditions and usage requirements, providing users with a comfortable indoor environment.

[0058] Example 3: Please refer to Figure 2 and Figure 6 , an embodiment provided by the present invention: a screw compressor 24 is installed on one side of the top of the evaporator 13 through a bracket, a suction port 25 is installed on one side of the outer wall of the screw compressor 24, and the suction port 25 is installed at one end of the second connecting port 17 through a pipeline, a discharge port 26 is installed on the other side of the outer wall of the screw compressor 24, the discharge port 26 is connected to an oil separation box 27 through a pipeline, and the bottom of the oil separation box 27 is installed at the middle of the top of the evaporator 13 through a bracket, an output pipe 28 is installed on one side of the outer wall of the oil separation box 27, and the output pipe 28 is installed at one end of the third connecting port 18 through a pipeline;

[0059] The screw compressor 24 includes a transport channel 29, a threaded transport roller 30 and a servo motor 31, and the servo motor 31 is installed on one side of the transport channel 29, and the output end of the servo motor 31 passes through one side of the transport channel 29 and is installed with the threaded transport roller 30, and the outer wall of the threaded transport roller 30 is installed inside the transport channel 29;

[0060] Furthermore, through the setting of the screw compressor 24 and its stable operating characteristics, it is possible to reduce its influence on external factors, thereby maintaining a long-term high-efficiency and stable operating state, which is beneficial to reducing the failure rate and improving its operating stability, thereby increasing the service life of the screw water cooling unit.

[0061] Example 4: Please refer to Figure 2 and Figure 3, an embodiment provided by the present invention: a screw water cooling unit with a cooling and heating synchronization function, comprising a collection module 1, the collection module 1 is used to obtain the temperature outside the screw water cooling unit and the chilled water inlet and outlet water temperatures, cooling water inlet and outlet water temperatures, evaporation pressure and condensation pressure data in the screw water cooling unit through a sensor;

[0062] The acquisition module 1 is electrically connected to the processor module 2 and the temperature threshold module 3 respectively. The temperature threshold module 3 is used to send the data of switching cooling or heating to the processor module 2 when the acquired outdoor temperature is higher or lower than the set value. The processor module 2 sends instructions to the PLC controller 4 according to the acquired data, and the PLC controller 4 controls the actuator 5 to switch the cooling or heating mode;

[0063] The processor module 2 includes a logic judgment switching module 6, a manual switching module 7 and an emergency intervention module 8. The logic judgment switching module 6 is used to determine whether the cooling mode or heating module should be operated currently according to the acquired temperature data and the set parameters. The manual switching module 7 is used to manually switch the cooling mode or heating mode. The emergency intervention module 8 includes a shutdown module 9, an information warning module 10 and a forced mode switching module 11. The shutdown module 9 is used to stop the screw water cooling unit when a fault occurs or the operation is unstable. The information warning module 10 is used to send the operation data to the user when a fault occurs or the operation is unstable. The forced mode switching module 11 is used to manually switch the cooling mode or heating mode, and the indoor temperature exceeds the set danger threshold, and send information to the user through the information warning module 10. If no reply data is received within the set time, the cooling mode or heating module is automatically switched through the logic judgment switching module 6;

[0064] A control console 36 is installed on the other side of the top of the condenser 14. A touch screen 37 is embedded and installed on the outer wall of the control console 36. The touch screen 37 is bidirectionally electrically connected to the processor module 2.

[0065] Furthermore, the touch screen 37 can display various commands issued by the processor module 2 and data acquired by the acquisition module 1 in real time, which is beneficial for on-site staff to view in real time.

[0066] Example 5: Please refer to Figure 7 , an embodiment provided by the present invention: the working steps of the screw type water cooling unit with cooling and heating synchronization function are as follows:

[0067] S1, according to whether the external temperature obtained by the acquisition module 1 exceeds or is lower than the set threshold data, the switching module 6 automatically adjusts and switches the cooling mode or the heating mode through logic judgment;

[0068] S2. During operation, after the user uses the manual switching module 7, the logic judgment switching module 6 will be automatically closed, and the switching of the cooling and heating modes will be determined manually;

[0069] S3, when the emergency intervention module 8 detects that the external temperature exceeds or falls below the danger threshold when the logic judgment switching module 6 is turned off, the information warning module 10 can send information to inform the user to determine whether to continue to use the device at that temperature;

[0070] S4: If the user fails to confirm the information within the set time, the emergency intervention module 8 automatically starts the logic judgment switching module 6 to switch the cooling or heating mode;

[0071] S5. By setting the four-way valve 15, the flow direction of the refrigerant in the screw water cooling unit can be changed, so as to realize the interchange of the functions of the condenser 14 and the evaporator 13, thereby achieving the function of synchronous cooling and heating;

[0072] S5 also includes the following steps:

[0073] S51, when performing refrigeration, the evaporator 13 will generate gaseous refrigerant and deliver it to the four-way valve 15 through the return port 20 and the first connection port 16, and then deliver it to the screw compressor 24 through the second connection port 17 and the suction port 25. After compression by the screw compressor 24, the gaseous refrigerant is again delivered to the four-way valve 15 through the output pipe 28 of the oil separation box 27 and the third connection port 18, and then delivered to the condenser 14 through the fourth connection port 19 and the vent port 34 to form a high-pressure liquid refrigerant, and then the refrigerant is delivered to the evaporator 13 through the refrigerant outlet 38 and the expansion valve 35 to perform heat absorption evaporation for refrigeration;

[0074] S52. When heating is performed, the functions of the condenser 14 and the evaporator 13 are interchanged through the setting of the four-way valve 15. The condenser 14 absorbs heat from the outdoor air, evaporates the refrigerant into a gaseous state, and delivers it to the four-way valve 15 through the air vent 34 and the fourth connecting port 19. The gaseous refrigerant is then delivered to the screw compressor 24 through the setting of the second connecting port 17 and the suction port 25. After compression by the screw compressor 24, the gaseous refrigerant is again delivered to the four-way valve 15 through the setting of the output pipe 28 of the oil separation box 27 and the setting of the third connecting port 18. Finally, the gas is delivered to the evaporator 13 through the setting of the first connecting port 16 and the return air port 20, and is condensed by the evaporator 13 to meet the heating demand.

[0075] Working principle: through the settings of the logic judgment switching module 6, the manual switching module 7 and the emergency intervention module 8 included in the processor module 2, according to whether the external temperature obtained by the acquisition module 1 exceeds or is lower than the set threshold data, the logic judgment switching module 6 automatically adjusts and switches the cooling mode or the heating mode, and during the operation, after the user uses the manual switching module 7, the logic judgment switching module 6 will be automatically closed, and the cooling and heating mode switching will be determined manually. The emergency intervention module 8 is used to detect that the external temperature exceeds or is lower than the dangerous threshold when the logic judgment switching module 6 is closed. The information warning module 10 can send information to inform the user whether to continue to use it according to the temperature, and use it within the set time. If the personnel do not confirm the information, the emergency intervention module 8 automatically starts the logic judgment switching module 6 to switch the cooling or heating mode, thereby improving the safety of use. The dangerous threshold of temperature refers to the temperature data that will affect the health of the user if the human body is exposed to this temperature for a long time. By using the logic judgment switching module 6 to automatically adjust the setting of the cooling mode or heating mode according to the external temperature change data, the effect of synchronous supply of cold and hot can be achieved, thereby avoiding unnecessary energy waste and improving the flexibility and applicability of the screw water cooling unit. Through the setting of the four-way valve 15, when cooling is performed, the evaporator 13 will generate gaseous refrigerant and transport it to the four-way valve 15 through the return air port 20 and the first connecting port 16, and then through the second The connection port 17 and the suction port 25 are set to transport the refrigerant to the screw compressor 24. After the screw compressor 24 compresses, it is transported to the four-way valve 15 again through the output pipe 28 of the oil separation box 27 and the setting of the third connection port 18, and is transported to the condenser 14 through the setting of the fourth connection port 19 and the air vent 34 to form a high-pressure liquid refrigerant. The refrigerant is then transported to the evaporator 13 through the refrigerant outlet 38 and the expansion valve 35 to absorb heat and evaporate for cooling. When heating, the function of the condenser 14 and the evaporator 13 is interchanged through the setting of the four-way valve 15. The condenser 14 absorbs heat from the outdoor air, evaporates the refrigerant into a gaseous state, and transports it to the four-way valve 15 through the air vent 34 and the fourth connection port 19, and then from the second connection port The gaseous refrigerant is delivered to the screw compressor 24 by the setting of the suction port 17 and the suction port 25. After being compressed by the screw compressor 24, the gaseous refrigerant is delivered to the four-way valve 15 again through the output pipe 28 of the oil separation box 27 and the setting of the third connection port 18. Finally, it is delivered to the evaporator 13 through the setting of the first connection port 16 and the return air port 20. The evaporator 13 releases heat and condenses the refrigerant, thereby meeting the heating demand. The setting of the four-way valve 15 can change the flow direction of the refrigerant in the screw water cooling unit, thereby realizing the interchange of the functions of the condenser 14 and the evaporator 13. Through this switching mechanism, the screw water cooling unit can flexibly respond to different climatic conditions and usage requirements, and provide users with a comfortable indoor environment. Through the setting of the screw compressor 24,Through its stable operating characteristic setting, it can reduce the impact of external factors, thereby maintaining a long-term efficient and stable operating state, which is conducive to reducing the failure rate and improving its use stability, thereby increasing the service life of the screw water cooling unit. The touch screen 37 can display various commands issued by the processor module 2 and the data obtained by the acquisition module 1 in real time, which is conducive to real-time viewing by on-site staff.

[0076] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

Claims

1. A screw-type water-cooling unit with cooling and heating synchronization function, comprising a collection module (1), characterized in that: The acquisition module (1) is used to obtain the temperature outside the screw water cooling unit and the chilled water inlet and outlet water temperatures, cooling water inlet and outlet water temperatures, evaporation pressure and condensation pressure data inside the screw water cooling unit through sensors; The acquisition module (1) is electrically connected to a processor module (2) and a temperature threshold module (3), respectively; the temperature threshold module (3) is used to send data for switching cooling or heating to the processor module (2) when the acquired outdoor temperature is higher or lower than a set value; the processor module (2) sends instructions to a PLC controller (4) based on the acquired data; and the PLC controller (4) controls an actuator (5) to switch cooling or heating mode; The processor module (2) comprises a logic judgment switching module (6), a manual switching module (7) and an emergency intervention module (8); the logic judgment switching module (6) is used to determine whether the cooling mode or the heating mode should be currently operated according to the acquired temperature data and the set parameters; the manual switching module (7) is used to manually switch the cooling mode or the heating mode; the emergency intervention module (8) comprises a shutdown module (9), an information warning module (10) and a forced mode switching module (11); the shutdown module (9) is used to stop the screw water cooling unit when a fault occurs or the operation is unstable; the information warning module (10) is used to send corresponding operation data to a user when a fault occurs or the operation is unstable; the forced mode switching module (11) is used to send information to the user through the information warning module (10) when the cooling mode or the heating mode is manually switched and the indoor temperature exceeds a set danger threshold; and if no reply data is received within a set time, the logic judgment switching module (6) automatically switches the cooling mode or the heating module; The actuator (5) comprises a support frame (12), an evaporator (13) is mounted on the front end of the support frame (12), a condenser (14) is mounted on the rear end of the support frame (12), a four-way valve (15) is mounted on one side of the top of the support frame (12), and a first connection port (16), a second connection port (17), a third connection port (18) and a fourth connection port (19) are mounted in sequence from one side to the other side of the top of the four-way valve (15); A screw compressor (24) is mounted on one side of the top of the evaporator (13) via a bracket, a suction port (25) is mounted on one side of the outer wall of the screw compressor (24), and the suction port (25) is mounted to one end of the second connecting port (17) via a pipeline, a discharge port (26) is mounted on the other side of the outer wall of the screw compressor (24), the discharge port (26) is connected to an oil separation box (27) via a pipeline, and the bottom of the oil separation box (27) is mounted to the middle of the top of the evaporator (13) via a bracket, and an output pipe (28) is mounted on one side of the outer wall of the oil separation box (27), and the output pipe (28) is mounted to one end of the third connecting port (18) via a pipeline.

2. The screw type water cooling unit with cooling and heating synchronization function according to claim 1, characterized in that: An air return port (20) is installed on one side of one end of the evaporator (13), and the air return port (20) is connected to one end of the first connecting port (16) through a pipeline. A refrigerant inlet (21) is installed on the other side of one end of the evaporator (13). A chilled water inlet (22) is installed on one side of the outer wall of the evaporator (13). A chilled water outlet (23) is installed on the other end of the evaporator (13).

3. The screw type water cooling unit with cooling and heating synchronization function according to claim 1, characterized in that: The screw compressor (24) comprises a transport channel (29), a threaded transport roller (30) and a servo motor (31), wherein the servo motor (31) is installed on one side of the transport channel (29), and an output end of the servo motor (31) passes through a side of the transport channel (29) on which the threaded transport roller (30) is installed, and an outer wall of the threaded transport roller (30) is installed inside the transport channel (29).

4. The screw type water cooling unit with cooling and heating synchronization function according to claim 2, characterized in that: A cooling water inlet (32) is installed at the top of one end of the condenser (14), a cooling water outlet (33) is installed at the other end of the condenser (14), a vent (34) is installed in the middle of the top of the outer wall of the condenser (14), and the vent (34) is installed at one end of the fourth connecting port (19) through a pipeline.

5. The screw type water cooling unit with cooling and heating synchronization function according to claim 2, characterized in that: A refrigerant outlet (38) is installed at the bottom of one end of the condenser (14), an expansion valve (35) is installed at one end of the refrigerant outlet (38), and the expansion valve (35) is installed at one end of the refrigerant inlet (21) through a pipeline.

6. The screw type water cooling unit with cooling and heating synchronization function according to claim 2, characterized in that: A control console (36) is installed on the other side of the top of the condenser (14), a touch screen (37) is embedded and installed on the outer wall of the control console (36), and the touch screen (37) is bidirectionally electrically connected to the processor module (2).

7. A method for using a screw-type water-cooling unit with cooling and heating synchronization function according to any one of claims 1 to 6, characterized in that: The working steps of the screw water cooling unit with cooling and heating synchronization function are as follows: S1, according to whether the external temperature acquired by the acquisition module (1) exceeds or is lower than the set threshold data, the switching module (6) automatically adjusts and switches the cooling mode or the heating mode through the logic judgment; S2, during operation, after the user uses the manual switching module (7), the logic judgment switching module (6) will automatically shut down, and the switching between the cooling and heating modes will be determined manually; S3, when the emergency intervention module (8) detects that the external temperature exceeds or falls below the danger threshold value when the logic judgment switching module (6) is in a closed state, the information warning module (10) can send information to inform the user to determine whether to continue to use the device at the temperature; S4, if the user fails to confirm the information within the set time, the emergency intervention module (8) automatically starts the logic judgment switching module (6) to switch the cooling or heating mode; S5. By setting the four-way valve (15), the flow direction of the refrigerant in the screw water cooling unit can be changed, thereby realizing the interchange of the functions of the condenser (14) and the evaporator (13), thereby achieving the function of synchronous cooling and heating.

8. The method for using a screw-type water-cooling unit with cooling and heating synchronization function according to claim 7, characterized in that: The step S5 also includes the following steps: S51, when performing refrigeration, the evaporator (13) generates gaseous refrigerant and delivers it to the four-way valve (15) through the return port (20) and the first connecting port (16), and then delivers it to the screw compressor (24) through the second connecting port (17) and the suction port (25). After being compressed by the screw compressor (24), the gaseous refrigerant is again delivered to the four-way valve (15) through the output pipe (28) of the oil separation box (27) and the third connecting port (18), and then delivered to the condenser (14) through the fourth connecting port (19) and the vent (34) to form a high-pressure liquid refrigerant. The refrigerant is then delivered to the evaporator (13) through the refrigerant outlet (38) and the expansion valve (35), and then subjected to heat absorption and evaporation for refrigeration; S52. When heating is performed, the functions of the condenser (14) and the evaporator (13) are interchanged by setting the four-way valve (15). The condenser (14) absorbs heat from the outdoor air, evaporates the refrigerant into a gaseous state, and delivers the refrigerant to the four-way valve (15) through the vent (34) and the fourth connecting port (19). The gaseous refrigerant is then delivered to the screw compressor (24) through the second connecting port (17) and the suction port (25). After being compressed by the screw compressor (24), the refrigerant is again delivered to the four-way valve (15) through the output pipe (28) of the oil separation box (27) and the third connecting port (18). Finally, the refrigerant is delivered to the evaporator (13) through the first connecting port (16) and the return air port (20). The evaporator (13) releases heat and condenses the refrigerant, thereby meeting the heating requirement.

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