Temperature control device and drying system

Abstract

The utility model belongs to the field of drying equipment, and particularly provides a temperature control device and a drying system.The temperature control device comprises a compressor, an evaporator, a pressure relief passage and at least one heat supply passage, and the compressor comprises an air inlet end and an air outlet end; the evaporator comprises an inlet end and an outlet end, and the outlet end is connected with the air inlet end; one end of the heat supply channel is connected with the air outlet end, the other end of the heat supply channel is connected with the inlet end, the heat supply channel comprises a first condenser, and the first condenser is used for outputting heat to a target area; one end of the pressure relief passage is connected with the air outlet end, the other end of the pressure relief passage is connected with the inlet end, the pressure relief passage comprises a pressure relief electromagnetic valve and a second condenser, the pressure relief electromagnetic valve can control the pressure relief passage to be opened and closed, and the second condenser is located outside the target area. A heat pump structure is formed by the compressor, the evaporator and the first condenser, heat is output to the target area through the first condenser, the temperature adjusting range of the target area can be wide, and energy consumption of temperature control can be reduced.

Description

Technical Field

[0001] The present application belongs to the technical field of drying equipment, and more specifically, to a temperature control device and a drying system. Background Art

[0002] Industrial dryer is a common equipment in the industrial production process. At present, some industrial dryers heat the target area through electric heating structure. The advantage of this type of industrial dryer is fast heating speed, but the energy consumption is relatively high. Some industrial dryers are heat pump dryers. The temperature adjustment range of this type of heat pump dryer is narrow and the adjustment flexibility is poor, which limits the application scope of industrial dryers and cannot meet the production needs of some products. Utility Model Content

[0003] The purpose of the present application is to provide a temperature control device and a drying system to solve the technical problem of high energy consumption of the temperature control device in the prior art.

[0004] To achieve the above purpose, the technical solution adopted in this application is:

[0005] In one aspect, a temperature control device is provided, the temperature control device comprising:

[0006] A compressor, the compressor comprising an air inlet end and an air outlet end;

[0007] An evaporator, the evaporator comprising an inlet end and an outlet end, the outlet end being connected to the air inlet end;

[0008] at least one heat supply passage, one end of the heat supply passage is connected to the air outlet, the other end of the heat supply passage is connected to the inlet, the heat supply passage comprises a first condenser, and the first condenser is used to output heat to the target area;

[0009] A pressure relief passage, one end of which is connected to the outlet end, and the other end of which is connected to the inlet end, wherein the pressure relief passage comprises a pressure relief solenoid valve and a second condenser, wherein the pressure relief solenoid valve can control the on-off of the pressure relief passage, and the second condenser is located outside the target area.

[0010] On the one hand, a heat pump structure is formed by the compressor, the evaporator and the first condenser, and the first condenser is used to output heat to the target area, which can not only make the temperature stability of the target area higher and the temperature adjustment range of the target area wider, but also reduce the energy consumption of temperature control; on the other hand, by setting the pressure relief passage, the pressure relief passage and the heating passage form a parallel structure, and the opening and closing of the pressure relief solenoid valve is used to control the on-off of the pressure relief passage, so that the pressure relief passage can selectively divert the refrigerant discharged by the compressor, so as to adjust the amount of refrigerant flowing through the heating passage, thereby realizing the output heat regulation of the first condenser and the temperature control of the target area, and avoiding the overall pressure of the pipeline being too high to cause the compressor to switch to the high-pressure protection mode, thereby effectively ensuring the continuous and stable operation of the system.

[0011] As an implementation manner, the pressure relief solenoid valve is arranged on a side of the second condenser close to the gas outlet end.

[0012] Specifically, by arranging the pressure relief solenoid valve upstream of the refrigerant delivery direction of the second condenser, the pressure relief solenoid valve can isolate the second condenser from the compressor, restricting the refrigerant from entering the second condenser, thereby avoiding the refrigerant from exchanging heat in the second condenser. As a result, all the refrigerant discharged from the compressor passes through the first condenser and exchanges heat in the first condenser, so that the heat of the refrigerant is fully utilized, thereby helping to improve the efficiency of the first condenser in outputting heat to the target area.

[0013] As an implementation manner, the pressure relief passage further includes a pressure relief expansion valve, and the pressure relief expansion valve is arranged on a side of the second condenser away from the gas outlet end.

[0014] Specifically, the flow rate and pressure of the pressure relief passage are different from those of the heat supply passage. By arranging the pressure relief expansion valve on the side of the second condenser away from the air outlet, the pressure relief expansion valve can achieve a buffering effect, thereby avoiding direct conduction between the refrigerant in the pressure relief passage and the refrigerant in the heat supply passage, thereby helping to reduce the flow fluctuation of the refrigerant in the heat supply passage, thereby helping to improve the stability of the output heat of the first condenser.

[0015] As an implementation manner, the second condenser is thermally connected to the evaporator, and the heat of the second condenser can be transferred to the evaporator.

[0016] Specifically, by thermally connecting the second condenser to the evaporator, heat can be provided to the evaporator, thereby improving the evaporation efficiency of the evaporator for the refrigerant, thereby helping the refrigerant to evaporate more fully and reducing the risk of liquid hammer in the compressor.

[0017] As an implementation manner, the heating passage further includes a heating solenoid valve, and the heating solenoid valve can control the on-off of the heating passage.

[0018] Specifically, by providing the heating solenoid valve capable of controlling the on-off of the heating passage, the flow of the refrigerant passing through the first condenser can be controlled, thereby achieving effective control of the output heat of the first condenser.

[0019] As an implementation manner, the heat supply passage further includes a capillary tube, and two ends of the capillary tube are connected to two ends of the heating solenoid valve in a one-to-one correspondence.

[0020] Specifically, by setting the capillary tube in parallel with the heating solenoid valve, when the heating solenoid valve is closed, a small amount of refrigerant can still pass through the capillary tube, so that the heating passage is still kept conductive. At this time, the amount of refrigerant flowing through the first condenser is small, which will not cause a significant increase in the output heat of the first condenser, but can enable the first condenser to output a small amount of heat, so as to reduce the rate of temperature drop in the target area, thereby making the temperature drop in the target area more gradual.

[0021] As an implementation manner, the temperature control device further includes a pressure sensor, the pressure sensor is disposed between the heat supply passage and the air outlet, and the pressure sensor is used to detect the pressure of the refrigerant.

[0022] Specifically, when the temperature of the target area reaches the target value, the heating solenoid valve switches to a closed state. At this time, the refrigerant flow rate of the heating passage decreases, thereby causing the refrigerant pressure between the gas outlet and the heating passage to increase. This solution detects the refrigerant pressure between the gas outlet and the heating passage by setting the pressure sensor. When the refrigerant pressure is higher than a preset value, the pressure relief solenoid valve opens and uses the pressure relief passage to divert the refrigerant to reduce the refrigerant pressure between the gas outlet and the heating passage, thereby avoiding excessive refrigerant pressure in the pipeline.

[0023] As an implementation manner, the number of the heating passages is two, and the heating solenoid valve is arranged on a side of the first condenser on the heating passage away from the air outlet end.

[0024] Specifically, by setting the heating solenoid valve on the side of the corresponding first condenser away from the air outlet, the two sides of the first condensers close to the air outlet can be connected to each other, thereby effectively improving the consistency of the internal pressure of the two first condensers and avoiding excessive pressure fluctuations of the first condenser during the process of switching the opening and closing states of the heating solenoid valve, thereby helping to improve the pressure stability of the first condenser during the operation of the first condenser.

[0025] As an implementation manner, the number of the compressors is two, the two compressors are arranged in parallel, the air inlet ends of the two compressors are connected, the air outlet ends of the two compressors are connected, and the two compressors can work independently.

[0026] Specifically, by setting up two compressors in parallel, when the target area needs to be heated up quickly, the two compressors can be turned on at the same time to increase the flow rate of the refrigerant, thereby increasing the refrigerant flowing through the first condenser, thereby increasing the output heat of the first condenser; when the temperature of the target area enters the dynamic equilibrium stage, the amount of refrigerant required by the first condenser is small, and the temperature control device can turn off one of the compressors and only use the other compressor to provide refrigerant to the first condenser to maintain the first condenser outputting heat to the target area.

[0027] On the other hand, a drying system is provided, which includes a box and any one of the temperature control devices described above, wherein the first condenser is disposed in the box.

[0028] Specifically, by arranging the first condenser in the box, the first condenser is utilized to stably and reliably deliver heat to the workpieces in the box, thereby effectively improving the drying efficiency of the workpieces.

[0029] The beneficial effects of the temperature control device and drying system provided by the present application are:

[0030] On the one hand, a heat pump structure is formed by the compressor, the evaporator and the first condenser, and the first condenser is used to output heat to the target area, which can not only make the temperature stability of the target area higher and the temperature adjustment range of the target area wider, but also reduce the energy consumption of temperature control; on the other hand, by setting the pressure relief passage, the pressure relief passage and the heating passage form a parallel structure, and the opening and closing of the pressure relief solenoid valve is used to control the on-off of the pressure relief passage, so that the pressure relief passage can selectively divert the refrigerant discharged by the compressor, so as to adjust the amount of refrigerant flowing through the heating passage, thereby realizing the output heat regulation of the first condenser and the temperature control of the target area, and avoiding the overall pressure of the pipeline being too high to cause the compressor to switch to the high-pressure protection mode, thereby effectively ensuring the continuous and stable operation of the system. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0032] Figure 1 Schematic diagram of the temperature control device provided in the embodiment of the present application Figure 1 ;

[0033] Figure 2 Schematic diagram of the temperature control device provided in the embodiment of the present application Figure 2 ;

[0034] Figure 3 Schematic diagram of the temperature control device provided in the embodiment of the present application Figure 3 ;

[0035] Figure 4 Schematic diagram of the drying system provided in the embodiment of the present application Figure 1 ;

[0036] Figure 5 Schematic diagram of the drying system provided in the embodiment of the present application Figure 2 ;

[0037] Figure 6 Schematic diagram of the drying system provided in the embodiment of the present application Figure 3 .

[0038] Among them, the reference numerals in the figure are:

[0039] 1. Compressor; 11. Air inlet; 12. Air outlet;

[0040] 2. Evaporator; 21. Inlet end; 22. Outlet end;

[0041] 3. Heating passage; 31. First condenser; 32. Heating solenoid valve; 33. Capillary tube; 34. Heating expansion valve; 35. One-way valve;

[0042] 4. Pressure relief passage; 41. Pressure relief solenoid valve; 42. Second condenser; 43. Pressure relief expansion valve;

[0043] 5. Pressure sensor;

[0044] 100. Box; 101. Target area. DETAILED DESCRIPTION

[0045] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0046] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0047] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present application 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 should not be understood as a limitation on the present application.

[0048] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0049] The present application embodiment provides a temperature control device, such as Figure 1 and Figure 4 As shown, the temperature control device includes a compressor 1, an evaporator 2, a pressure relief passage 4 and at least one heat supply passage 3, the compressor 1 includes an air inlet end 11 and an air outlet end 12; the evaporator 2 includes an inlet end 21 and an outlet end 22, and the outlet end 22 is connected to the air inlet end 11; one end of the heat supply passage 3 is connected to the air outlet end 12, and the other end of the heat supply passage 3 is connected to the inlet end 21, and the heat supply passage 3 includes a first condenser 31, and the first condenser 31 is used to output heat to the target area 101; one end of the pressure relief passage 4 is connected to the air outlet end 12, and the other end of the pressure relief passage 4 is connected to the inlet end 21, and the pressure relief passage 4 includes a pressure relief solenoid valve 41 and a second condenser 42, and the pressure relief solenoid valve 41 can control the on and off of the pressure relief passage 4, and the second condenser 42 is located outside the target area 101.

[0050] On the one hand, a heat pump structure is formed by the compressor 1, the evaporator 2 and the first condenser 31, and the first condenser 31 is used to output heat to the target area 101, which can not only make the temperature stability of the target area 101 higher and the temperature adjustment range of the target area 101 wider, but also reduce the energy consumption of temperature control; on the other hand, by setting the pressure relief passage 4, the pressure relief passage 4 and the heating passage 3 form a parallel structure, and the opening and closing of the pressure relief solenoid valve 41 is used to control the on-off of the pressure relief passage 4, so that the pressure relief passage 4 can selectively divert the refrigerant discharged by the compressor 1, so as to adjust the amount of refrigerant flowing through the heating passage 3, thereby realizing the output heat regulation of the first condenser 31 and the temperature control of the target area 101, and avoiding the overall pressure of the pipeline being too high to cause the compressor 1 to switch to the high-pressure protection mode, thereby effectively ensuring the continuous and stable operation of the system. Further, when the output heat of the first condenser 31 reaches a preset value, the pressure relief solenoid valve 41 switches to an open state, so that the pressure relief passage 4 is turned on. At this time, the pressure relief passage 4 diverts the refrigerant of the heating passage 3, thereby preventing the output heat of the first condenser 31 from continuing to rise; when the output heat of the first condenser 31 is lower than the preset value, the pressure relief solenoid valve 41 switches to a closed state, so that the pressure relief passage 4 is disconnected. At this time, the refrigerant no longer flows through the pressure relief passage 4, but all flows through the heating passage 3, thereby increasing the output heat of the first condenser 31. Overall, the dynamic balance of the output heat of the first condenser 31 is achieved through the opening and closing of the pressure relief solenoid valve 41, so that the temperature control device can accurately and stably control the temperature of the target area 101.

[0051] During the specific implementation process, the heat pump structure formed by the compressor 1, evaporator 2 and first condenser 31 is used to control the temperature of the target area 101, so that the temperature of the target area 101 can be adjusted between 40 degrees and 85 degrees, thereby enabling the target area 101 to meet the temperature requirements in the production process of more different products, which helps to improve the versatility of the temperature control device.

[0052] In one embodiment, if Figure 1 As shown, the pressure relief solenoid valve 41 is arranged on a side of the second condenser 42 close to the air outlet end 12. Specifically, by arranging the pressure relief solenoid valve 41 upstream of the refrigerant delivery direction of the second condenser 42, the pressure relief solenoid valve 41 can isolate the second condenser 42 from the compressor 1, restrict the refrigerant from entering the second condenser 42, and avoid the refrigerant from exchanging heat in the second condenser 42, so that the refrigerant discharged from the compressor 1 all passes through the first condenser 31 and exchanges heat in the first condenser 31, so that the heat of the refrigerant is fully utilized, thereby helping to improve the efficiency of the first condenser 31 in outputting heat to the target area 101.

[0053] Of course, in other embodiments, the pressure relief solenoid valve 41 can also be arranged on the side of the second condenser 42 away from the air outlet end 12, that is, the pressure relief solenoid valve 41 is arranged downstream of the refrigerant delivery direction of the second condenser 42. In this state, the second condenser 42 and the compressor 1 are connected. Although this design will allow a small amount of refrigerant to enter the second condenser 42, this design as a whole can also achieve on-off control of the pressure relief passage 4. Furthermore, this design can also limit the refrigerant from entering the second condenser 42 in large quantities and performing heat exchange, thereby allowing the refrigerant to more fully enter the first condenser 31 and perform heat exchange.

[0054] In one embodiment, if Figure 1 As shown, the pressure relief passage 4 further includes a pressure relief expansion valve 43 , and the pressure relief expansion valve 43 is disposed on a side of the second condenser 42 away from the gas outlet end 12 .

[0055] Specifically, the flow rate and pressure of the pressure relief passage 4 are different from those of the heating passage 3. By setting a pressure relief expansion valve 43 on the side of the second condenser 42 away from the air outlet end 12, the pressure relief expansion valve 43 can achieve a buffering effect, thereby avoiding direct conduction between the refrigerant in the pressure relief passage 4 and the refrigerant in the heating passage 3, thereby helping to reduce the flow fluctuation of the refrigerant in the heating passage 3, thereby helping to improve the stability of the output heat of the first condenser 31.

[0056] In one embodiment, if Figure 1 As shown, the second condenser 42 is thermally connected to the evaporator 2 , and the heat of the second condenser 42 can be transferred to the evaporator 2 .

[0057] Specifically, by thermally connecting the second condenser 42 to the evaporator 2 , heat can be provided to the evaporator 2 , thereby improving the evaporation efficiency of the evaporator 2 for the refrigerant, thereby helping the refrigerant to evaporate more fully and reducing the risk of liquid hammer in the compressor 1 .

[0058] In one embodiment, if Figure 1 As shown, the second condenser 42 is arranged in parallel with the evaporator 2, and the second condenser 42 is located on the air inlet side of the evaporator 2, and the evaporator 2 is located on the air outlet side of the second condenser 42. Specifically, the air after absorbing heat and heating up in the second condenser 42 immediately enters the evaporator 2, and the air transfers heat to the evaporator 2, so that the temperature of the evaporator 2 increases, which helps to improve the evaporation efficiency of the evaporator 2 for the refrigerant.

[0059] In the specific implementation process, the evaporator 2 is correspondingly provided with a first fan, and the first fan is used to drive air through the evaporator 2. The second condenser 42 is correspondingly provided with a second fan, and the second fan is used to drive air through the second condenser 42. When the second condenser 42 and the evaporator 2 are arranged in parallel, the first fan and the second fan can share a fan, and the fan is arranged on the side of the evaporator 2 away from the second condenser 42. The fan can form a negative pressure on the side of the evaporator 2 away from the second condenser 42, so that the air on the side of the second condenser 42 away from the evaporator 2 is attracted and passes through the second condenser 42 and the evaporator 2 in sequence, thereby realizing efficient and reliable air flow and heat exchange. Of course, in other embodiments, when the second condenser 42 and the evaporator 2 are arranged in parallel, it can also be designed as follows: the first fan is arranged on the side of the evaporator 2 away from the second condenser 42, and the second fan is arranged between the evaporator 2 and the second condenser 42.

[0060] In one embodiment, a heat conductor is provided between the second condenser 42 and the evaporator 2, one end of the heat conductor is connected to the second condenser 42, and the other end of the heat conductor is connected to the evaporator 2. The heat conductor directly transfers the heat of the second condenser 42 to the evaporator 2. This design has high thermal conductivity efficiency.

[0061] In one embodiment, if Figure 1 As shown, the heating passage 3 also includes a heating solenoid valve 32 , which can control the on-off of the heating passage 3 .

[0062] Specifically, by setting a heating solenoid valve 32 capable of controlling the on and off of the heating passage 3, the refrigerant flow through the first condenser 31 can be controlled, thereby achieving effective control of the output heat of the first condenser 31. Further, when the output heat of the first condenser 31 reaches a preset value, the heating solenoid valve 32 switches to a closed state, at which time the refrigerant flowing through the heating passage 3 decreases, thereby causing the output heat of the first condenser 31 to no longer continue to rise; when the output heat of the first condenser 31 is lower than the preset value, the heating solenoid valve 32 switches to an open state, at which time the refrigerant flowing through the heating passage 3 increases, thereby increasing the output heat of the first condenser 31. Overall, by opening and closing the heating solenoid valve 32, the refrigerant flow of the heating passage 3 changes rapidly, thereby achieving a dynamic balance of the output heat of the first condenser 31, so that the temperature control device can accurately and stably control the temperature of the target area 101.

[0063] In one embodiment, if Figure 1 As shown, the heat supply passage 3 further includes a capillary tube 33 , and two ends of the capillary tube 33 are connected to two ends of the heating solenoid valve 32 in a one-to-one correspondence.

[0064] Specifically, by setting a capillary tube 33 in parallel with the heating solenoid valve 32, when the heating solenoid valve 32 is closed, a small amount of refrigerant can still pass through the capillary tube 33, so that the heating passage 3 still remains conductive. At this time, the amount of refrigerant flowing through the first condenser 31 is small, which will not cause a significant increase in the output heat of the first condenser 31. Instead, it can enable the first condenser 31 to output a small amount of heat, so as to reduce the rate of temperature drop in the target area 101, thereby making the temperature drop in the target area 101 more gradual.

[0065] In one embodiment, if Figure 1 As shown, the temperature control device further includes a pressure sensor 5, which is disposed between the heat supply passage 3 and the air outlet 12, and is used to detect the pressure of the refrigerant.

[0066] Specifically, when the temperature of the target area 101 reaches the target value, the heating solenoid valve 32 is switched to a closed state. At this time, the refrigerant flow rate of the heating passage 3 decreases, thereby causing the refrigerant pressure between the gas outlet 12 and the heating passage 3 to increase. In this solution, a pressure sensor 5 is provided to detect the refrigerant pressure between the gas outlet 12 and the heating passage 3. When the refrigerant pressure is higher than a preset value, the pressure relief solenoid valve 41 is opened, and the refrigerant is diverted by the pressure relief passage 4 to reduce the refrigerant pressure between the gas outlet 12 and the heating passage 3, thereby avoiding excessive refrigerant pressure in the pipeline.

[0067] In one embodiment, the temperature control device further includes a controller, which is electrically connected to the pressure relief solenoid valve 41 , the heating solenoid valve 32 and the pressure sensor 5 , so as to control the on-off of the heating passage 3 and the pressure relief passage 4 as a whole.

[0068] In one embodiment, if Figure 1 As shown, there are two heating passages 3 , and the heating solenoid valve 32 is arranged on the side of the first condenser 31 on the heating passage 3 away from the air outlet end 12 .

[0069] Specifically, by setting the heating solenoid valve 32 on the side of the corresponding first condenser 31 away from the air outlet end 12, the two sides of the first condensers 31 close to the air outlet end 12 can be connected to each other, thereby effectively improving the consistency of the internal pressure of the two first condensers 31, avoiding excessive pressure fluctuations in the first condenser 31 during the switching of the opening and closing states of the heating solenoid valve 32, thereby helping to improve the pressure stability of the first condenser 31 during the working process.

[0070] Of course, in other embodiments, the number of heating passages 3 may be more than three, such as four or five or six, etc. During application, the specific number of heating passages 3 may be determined according to the number of target areas, so that each heating passage 3 corresponds to a target area, thereby enabling the temperature control device to serve multiple target areas and output heat to multiple target areas.

[0071] Of course, in other embodiments, the heating solenoid valve 32 may also be disposed on a side of the first condenser 31 on the heating passage 3 close to the air outlet end 12 .

[0072] In a specific implementation process, the first condensers 31 on the two different heat supply paths 3 can be arranged at different positions according to the requirements of the target area 101 .

[0073] In one embodiment, if Figure 1 As shown, the heating passage 3 further includes a heating expansion valve 34 , which is disposed on a side of the heating solenoid valve 32 away from the first condenser 31 .

[0074] Specifically, the flow rate and pressure of the pressure relief passage 4 are different from those of the heating passage 3. By setting a heating expansion valve 34 on the side of the heating solenoid valve 32 away from the first condenser 31, the heating expansion valve 34 can achieve a buffering effect, thereby avoiding direct conduction between the refrigerant in the pressure relief passage 4 and the refrigerant in the heating passage 3, thereby helping to reduce the flow fluctuation of the refrigerant in the heating passage 3 and the pressure relief passage 4, thereby helping to improve the working stability of the first condenser 31 and the second condenser 42.

[0075] In one embodiment, if Figure 1 As shown, the two heat supply paths 3 share a heat supply expansion valve 34, that is, the two heat supply paths 3 converge into a main path away from the gas outlet 12, and the heat supply expansion valve 34 is arranged on the main path. Of course, in other embodiments, it can also be designed that: the two heat supply paths 3 are respectively provided with an independent heat supply expansion valve 34, such as Figure 2 shown.

[0076] In one embodiment, if Figure 1 As shown, the heating passage 3 further includes a one-way valve 35 , which is disposed between the first condenser 31 and the heating solenoid valve 32 .

[0077] In one embodiment, if Figure 3 As shown, there are two compressors 1, which are arranged in parallel, the air inlet ends 11 of the two compressors 1 are connected, the air outlet ends 12 of the two compressors 1 are connected, and the two compressors 1 can work independently.

[0078] Specifically, by setting up two parallel compressors 1, when the target area 101 needs to be heated up quickly, the two compressors 1 can be turned on at the same time to increase the flow rate of the refrigerant, thereby increasing the refrigerant flowing through the first condenser 31, thereby increasing the output heat of the first condenser 31; when the temperature of the target area 101 enters the dynamic equilibrium stage, the amount of refrigerant required by the first condenser 31 is small, and the temperature control device can turn off one of the compressors 1 and only use the other compressor to provide refrigerant to the first condenser 31, so as to maintain the first condenser 31 outputting heat to the target area 101.

[0079] In one embodiment, the air inlet end 11 and the air outlet end 12 of the compressor 1 are respectively provided with temperature detection components. These two sets of temperature detection components are used to monitor the return air temperature and the exhaust air temperature of the compressor 1, and to alarm when the return air temperature or the exhaust air temperature is abnormal, so as to ensure the effective operation of the compressor 1 and effectively maintain the service life of the compressor 1.

[0080] In one embodiment, the air inlet end 11 and the air outlet end 12 of the compressor 1 are respectively provided with pressure detection components. These two sets of pressure detection components are used to monitor the return air pressure and exhaust pressure of the compressor 1, and to alarm when the return air pressure or the exhaust pressure is abnormal, so as to ensure the effective operation of the compressor 1 and effectively maintain the service life of the compressor 1.

[0081] The present application also provides a drying system. Figure 4 As shown, the drying system includes a box 100 and any of the above-mentioned temperature control devices, and the first condenser 31 is arranged in the box 100. Specifically, by arranging the first condenser 31 in the box 100, the first condenser 31 is used to stably and reliably transfer heat to the workpiece in the box 100, thereby effectively improving the drying efficiency of the workpiece. In the specific implementation process, the drying system can be applied to the production of the shoe industry.

[0082] In one embodiment, the drying system further includes a conveyor line. A target area 101 for drying the workpiece is provided inside the box 100 . The conveyor line runs through the box 100 , and the conveyor line can convey the workpiece to the target area 101 .

[0083] In one embodiment, there are two conveyor lines, two target areas 101 are arranged inside the box 100, the two conveyor lines correspond to the two target areas 101 one by one, the temperature control device includes two heat supply passages 3, and the first condensers 31 of the two heat supply passages 3 correspond to the two target areas 101 one by one. Furthermore, the two conveyor lines are distributed up and down, and the two target areas 101 are also distributed up and down, one heat supply passage 3 is arranged corresponding to the upper target area 101, and the other heat supply passage 3 is arranged corresponding to the lower target area 101.

[0084] In one embodiment, each heating passage 3 includes two first condensers 31 , and the two first condensers 31 in the same heating passage 3 are respectively arranged on the left and right sides of the same conveying line to make the temperature of the target area 101 more uniform.

[0085] In another embodiment, if Figure 5 As shown, the drying system includes a box 100, two conveying lines distributed up and down, and two temperature control devices, and each temperature control device includes two first condensers 31. The first temperature control device is used to transfer heat to the upper conveying line, that is, the two first condensers 31 of the first temperature control device are respectively arranged on the left and right sides of the upper conveying line; the second temperature control device is used to transfer heat to the lower conveying line, that is, the two first condensers 31 of the second temperature control device are respectively arranged on the left and right sides of the lower conveying line.

[0086] Of course, in another embodiment, if Figure 6 As shown, it can also be designed as: the drying system includes a box 100, two conveying lines distributed up and down, and two temperature control devices, and the temperature control devices each include two first condensers 31, the first temperature control device is used to transport heat to the left side of the upper and lower conveying lines, that is, the two first condensers 31 of the first temperature control device are respectively arranged on the left side of the upper conveying line and the left side of the lower conveying line; the second temperature control device is used to transport heat to the right side of the upper and lower conveying lines, that is, the two first condensers 31 of the second temperature control device are respectively arranged on the right side of the upper conveying line and the right side of the lower conveying line.

[0087] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. A temperature control device, characterized in that: include: A compressor, the compressor comprising an air inlet end and an air outlet end; An evaporator, the evaporator comprising an inlet end and an outlet end, the outlet end being connected to the air inlet end; at least one heat supply passage, one end of the heat supply passage is connected to the air outlet, the other end of the heat supply passage is connected to the inlet, the heat supply passage comprises a first condenser, and the first condenser is used to output heat to the target area; A pressure relief passage, one end of which is connected to the outlet end, and the other end of which is connected to the inlet end, wherein the pressure relief passage comprises a pressure relief solenoid valve and a second condenser, wherein the pressure relief solenoid valve can control the on-off of the pressure relief passage, and the second condenser is located outside the target area.

2. The temperature control device according to claim 1, characterized in that: The pressure relief solenoid valve is arranged on a side of the second condenser close to the gas outlet end.

3. The temperature control device according to claim 1, characterized in that: The pressure relief passage further includes a pressure relief expansion valve, and the pressure relief expansion valve is arranged on a side of the second condenser away from the gas outlet end.

4. The temperature control device according to claim 1, characterized in that: The second condenser is thermally connected to the evaporator, and the heat of the second condenser can be transferred to the evaporator.

5. The temperature control device according to any one of claims 1 to 4, characterized in that: The heating passage also includes a heating solenoid valve, which can control the on and off of the heating passage.

6. The temperature control device according to claim 5, characterized in that: The heat supply passage also includes a capillary tube, and two ends of the capillary tube are connected to two ends of the heat supply solenoid valve in a one-to-one correspondence.

7. The temperature control device according to claim 5, characterized in that: The temperature control device further includes a pressure sensor, which is disposed between the heat supply passage and the air outlet, and is used to detect the pressure of the refrigerant.

8. The temperature control device according to claim 5, characterized in that: The number of the heating passages is two, and the heating solenoid valve is arranged on a side of the first condenser on the heating passage away from the air outlet end.

9. The temperature control device according to claim 8, characterized in that: The number of the compressors is two, the two compressors are arranged in parallel, the air inlet ends of the two compressors are connected, the air outlet ends of the two compressors are connected, and the two compressors can work independently.

10. A drying system, characterized in that: It comprises a housing and the temperature control device according to any one of claims 1 to 9, wherein the first condenser is arranged in the housing.

Images