Printing equipment liquid cooling system and printing equipment

Abstract

The utility model belongs to the technical field of ink-jet printing, and particularly relates to a liquid cooling system of printing equipment and the printing equipment. The liquid cooling system of the printing equipment comprises a first temperature adjusting unit which comprises a first liquid container, a condenser, a compressor, a first heat exchange pipeline and a first conveying pipeline, and the first heat exchange pipeline is located in the first liquid container; the second temperature adjusting unit comprises a second liquid container, a second heat exchange pipeline and a second conveying pipeline, the second heat exchange pipeline is located in the second liquid container, an inlet of the second heat exchange pipeline is communicated with the first liquid container, and an outlet of the second heat exchange pipeline is communicated with the first liquid container; the inlet end and the outlet end of the second conveying pipeline are communicated with the interior of the second liquid container, and at least one part of the second conveying pipeline extends to a heat dissipation part of a second working device of the printing equipment. According to the utility model, a plurality of working devices of the printing equipment can be effectively cooled.

Description

Technical Field

[0001] The utility model relates to the technical field of inkjet printing, in particular to a printing equipment liquid cooling system and a printing equipment. Background Art

[0002] As the speed of inkjet printing equipment increases, the corresponding data processing volume and the workload of the printhead will increase, especially in double-sided printing equipment, which needs to dry after printing on one side before printing on the other side. In short, the faster the speed of inkjet printing equipment, the higher the production capacity, which will bring about various power consumption increases and heat increases. If the increased heat is not removed in time, it will bring various unstable factors to the inkjet printing equipment, thereby affecting the quality of inkjet printing.

[0003] Printing equipment often has multiple working devices, each of which has different functions. These working devices work together to realize the complete functions of the printing equipment. Some of these working devices will generate heat that affects the printing equipment. For example, the nozzle driver board that controls the nozzle to spray ink, the nozzle used for inkjet, and the paper path used to transport the printing medium will all generate heat.

[0004] Among them, the nozzle driver board mainly converts the data signal into a circuit signal to drive the piezoelectric crystal of the nozzle to perform inkjet action. As the printing speed increases, the conversion frequency of the data signal will gradually increase, so the heat generated by the drive circuit will increase sharply and can reach above 120°C. Conventional driver boards generally use heat sinks for heat dissipation. The heat dissipation method of heat sinks has low heat dissipation efficiency and is not suitable for long-term heat dissipation under high loads. Therefore, some fans are added to the heat sink to assist the flow and speed up the air flow to further remove the heat. However, this method will be affected by environmental factors. Therefore, its heat dissipation capacity is better than the automatic heat dissipation of the heat sink. It can only be used in some low-speed inkjet application scenarios. Secondly, in most application scenarios, the driver board is installed near the nozzle, and the heat dissipated by the above two methods will affect the working environment of the nozzle.

[0005] Because the working frequency of the nozzle is close to the limit when printing at high speed, the high-frequency PZT oscillation will cause the nozzle temperature to rise continuously. When the nozzle temperature rises, on the one hand, the workability of PZT is reduced, and on the other hand, the viscosity of the ink in the nozzle is reduced. After the viscosity changes, the oscillation amplitude of PZT needs to be adjusted, but the temperature changes quickly. If the oscillation amplitude cannot be adjusted in time, it will cause unstable injection. Some nozzles use the temperature viscosity change curve to control the oscillation amplitude in real time. Due to insufficient control accuracy, it is difficult to achieve good results.

[0006] During double-sided printing, it is necessary to dry the graphics and text printed on one side and then perform the printing on the second side. Due to the high-speed operation of the paper path, before the heat of the dried paper tape has completely dissipated, it enters the second-side printing. At this time, the temperature of the paper tape will radiate to the print head, affecting the working temperature of the print head again, and at the same time increasing the temperature rise of the print head, which is also the key factor for the uncontrollable temperature of the print head. Usually, the paper path is extended and a fan is added to cool the paper path; or a water-cooled roller is added to cool the paper path. However, due to the working state of the paper path, it is not combined with the printing system. During shutdown, due to the too low temperature of the water-cooled roller, condensation is likely to occur. After the paper tape absorbs water and is under the action of tension, paper breakage occurs.

[0007] At present, although there are cooling facilities for cooling a single working device separately, during the operation of the printing device, there are often multiple working devices that need to be cooled and have different cooling requirements. Therefore, the current cooling measures for the printing device cannot effectively cool multiple working devices of the printing device in a relatively simple way. Utility Model Content

[0008] In view of this, the present utility model provides a liquid cooling system for a printing device and a printing device, which are used to solve the technical problem that the existing cooling methods of the printing device cannot effectively cool multiple working devices of the printing device.

[0009] The technical solution adopted by the present utility model is as follows:

[0010] In the first aspect, the present utility model provides a liquid cooling system for a printing device, including:

[0011] A first temperature adjustment unit, including a first liquid container, a condenser, a compressor, a first heat exchange pipeline, and a first delivery pipeline. The first heat exchange pipeline is located inside the first liquid container. One end of the first heat exchange pipeline is connected to one end of the condenser, and the opposite end is connected to the other end of the condenser through the compressor. The inlet end and the outlet end of the first delivery pipeline are communicated with the first liquid container, and at least a part of the first delivery pipeline extends to the heat dissipation part of the first working device of the printing device;

[0012] A second temperature adjustment unit, including a second liquid container, a second heat exchange pipeline, and a second delivery pipeline. The second heat exchange pipeline is located inside the second liquid container. The inlet of the second heat exchange pipeline is communicated with the first liquid container, the outlet of the second heat exchange pipeline is communicated with the first liquid container, the inlet end and the outlet end of the second delivery pipeline are internally communicated with the second liquid container, and at least a part of the second delivery pipeline extends to the heat dissipation part of the second working device of the printing device.

[0013] Preferably, the first working device is a printing medium conveying device. The first temperature regulating unit further includes a first water pump. The inlet of the first water pump is connected to the inside of a first liquid container through a first conveying pipeline. The outlet of the first water pump is connected to the liquid inlet of the printing medium conveying device through a first conveying pipeline. The liquid outlet of the printing medium conveying device is connected to the inside of the first liquid container through a first conveying pipeline.

[0014] Preferably, the second working device is a board. The second temperature regulating unit further includes a second water pump. The inlet of the second water pump is connected to the inside of a second liquid container through a second conveying pipeline. The outlet of the second water pump is connected to the inlet end of a board heat sink through a second conveying pipeline. The outlet end of the board heat sink is connected to the inside of the second liquid container through a second conveying pipeline.

[0015] Preferably, the second temperature regulating unit further includes a fourth conveying pipeline and a fourth water pump. The inlet of the second heat exchange pipeline is connected to the first liquid container through the fourth conveying pipeline. The outlet of the second heat exchange pipeline is connected to the first liquid container through the fourth conveying pipeline. The fourth water pump is arranged on the fourth conveying pipeline and is between the inlet of the second heat exchange pipeline and the first liquid container.

[0016] Preferably, the first temperature regulating unit further includes a first temperature sensor for detecting the temperature of the liquid in the first liquid container. The second temperature regulating unit further includes a second temperature sensor and a first heating device. The second temperature sensor is used for detecting the temperature of the liquid in the second liquid container. The part of the first heating device for heating is located in the second liquid container.

[0017] Preferably, a third temperature regulating unit is further included. The third temperature regulating unit includes a third liquid container, a third heat exchange pipeline, and a third conveying pipeline. The third liquid container is used for containing liquid. The third heat exchange pipeline is located inside the third liquid container. The inlet of the third heat exchange pipeline is connected to the first liquid container. The outlet of the third heat exchange pipeline is connected to the first liquid container. The inlet end and the outlet end of the third conveying pipeline are connected to the inside of the third liquid container. At least a part of the third conveying pipeline extends to the heat dissipation area of the third working device of the printing equipment.

[0018] Preferably, the third working device is a print head. The third temperature regulating unit further includes a third water pump. The inlet of the third water pump is connected to the inside of the third liquid container through a third conveying pipeline. The outlet of the third water pump is connected to the inlet end of a print head base plate through a third conveying pipeline. The outlet end of the print head base plate is connected to the inside of the third liquid container through a third conveying pipeline.

[0019] Preferably, the third temperature regulation unit further includes a fifth delivery pipeline and a fifth water pump. The inlet of the third heat exchange pipeline is connected to the first liquid container through the fifth delivery pipeline, and the outlet of the third heat exchange pipeline is connected to the first liquid container through the fifth delivery pipeline. The fifth water pump is arranged on the fifth delivery pipeline and is located between the inlet of the third heat exchange pipeline and the first liquid container.

[0020] Preferably, the third temperature regulation unit further includes a third temperature sensor and a second heating device. The third temperature sensor is used to detect the temperature of the liquid in the third liquid container, and the part of the second heating device for heating is located in the third liquid container.

[0021] In a second aspect, the present invention provides a printing device, including the printing device liquid cooling system described in the first aspect.

[0022] Beneficial effects: The printing device liquid cooling system and the printing device of the present invention use at least two temperature regulation units to cool different working devices in the printing device. The present invention adjusts the temperature of the liquid in the first liquid container through the compressor and condenser in the first temperature regulation unit, and uses the liquid in the first liquid container to cool the first working device. Then, the liquid in the first liquid container is introduced into the second heat exchange pipeline arranged in the second liquid container to cool the liquid in the second liquid container, thereby adjusting the temperature of the liquid in the second liquid container, and using the liquid in the second liquid container to cool the second working device. Since the two temperature regulation units use the liquids in different liquid containers to be introduced into the parts that need to be cooled by different working devices, the temperatures of different working devices can be independently adjusted. Also, because the liquid in the first liquid container is used to adjust the temperature of the liquid in the second liquid container, the two temperature regulation units form an integrated cooling system. In this way, the entire system only needs a set of compressor and condenser to independently adjust the temperatures of multiple different working devices. Therefore, the structure is simple and the cost is lower. Description of the Drawings

[0023] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following will briefly introduce the drawings required to be used in the embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings, and all of these are within the protection scope of the present invention.

[0024] Figure 1 It is a schematic diagram of the printing device liquid cooling system of the present invention;

[0025] Figure 2 It is a schematic diagram of the printing device liquid cooling system with three temperature regulation units of the present invention;

[0026] Figure 3 This is the schematic diagram of the first temperature adjustment unit in the present utility model;

[0027] Figure 4 This is the schematic diagram of the second temperature adjustment unit in the present utility model;

[0028] Figure 5 This is the schematic diagram of the third temperature adjustment unit in the present utility model.

[0029] Parts and their numbers in the figure:

[0030] First temperature adjustment unit 1, first liquid container 11, condenser 12, first switch 121, second switch 122, compressor 13, first heat exchange pipeline 14, first conveying pipeline 15, first water pump 16, first temperature sensor 17, first liquid level switch 18, first flow switch 19, second temperature adjustment unit 2, second liquid container 21, second heat exchange pipeline 22, second conveying pipeline 23, second water pump 241, second flow switch 242, fourth conveying pipeline 25, fourth water pump 261, fourth flow switch 262, second temperature sensor 27, first heating device 28, second liquid level switch 29, third temperature adjustment unit 3, third liquid container 31, third heat exchange pipeline 32, third conveying pipeline 33, fifth conveying pipeline 34, third flow switch 351, third water pump 352, third temperature sensor 36, second heating device 37, third liquid level switch 38, fifth flow switch 391, fifth water pump 392, water-cooled roller 4, board card heat dissipation plate 5, nozzle bottom plate 6. Specific implementation manners

[0031] To make the objectives, technical solutions, and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or sequence between these entities or operations. In the description of the present utility model, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying 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 construed as a limitation of the present utility model. Moreover, the terms "include", "comprise" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device. Without further limitation, elements defined by the statement "including..." do not exclude the existence of additional identical elements in the process, method, article or device including the said elements. If there is no conflict, the embodiments of the present utility model and the various features in the embodiments may be combined with each other, and all are within the protection scope of the present utility model.

[0032] Embodiment 1

[0033] As Figure 1 shown, the present utility model provides a liquid cooling system for a printing device. The liquid cooling system for the printing device includes a first temperature regulation unit 1 and a second temperature regulation unit 2, and the two regulation units are respectively used to regulate the temperatures of two different working devices.

[0034] Among them, the first temperature regulation unit 1 includes a first liquid container 11, a condenser 12, a compressor 13, a first heat exchange pipeline 14, and a first conveying pipeline 15. The first heat exchange pipeline 14 is located in the first liquid container 11. One end of the heat exchange pipeline is connected to the condenser 12, and the opposite end is connected to the other end of the condenser 12 through the compressor 13. The inlet end and the outlet end of the first conveying pipeline 15 are communicated with the first liquid container 11, and at least a part of the first conveying pipeline 15 extends to the heat dissipation part of the first working device of the printing device.

[0035] The first liquid container 11 is used to hold liquid. The working fluid in the first heat exchange pipeline 14 exchanges heat with the liquid in the first container to absorb the heat of the liquid in the first container, then flows to the compressor 13, and after being pressurized by the compressor 13, flows to the condenser 12. After releasing heat in the condenser 12, the working fluid flows back to the position of the first heat exchange pipe to exchange heat with the liquid in the first liquid container 11. The heat exchange pipeline can adopt a coiled pipe to increase the heat exchange area. The cooled first liquid is transported to the heat dissipation part of the first working device through the first transport pipeline 15 to dissipate heat from the first working device.

[0036] To control the flow of the working fluid, a switch can be set on the pipeline connecting the compressor 13 and the condenser 12, such as Figure 1 the first switch 121 in [], or a second switch 122 can also be set on the pipeline connecting the first heat exchange pipeline and the condenser 12.

[0037] The second temperature adjustment unit 2 includes a second liquid container 21, a second heat exchange pipeline 22, and a second transport pipeline 23. The second heat exchange pipeline 22 is located inside the second liquid container 21. The inlet of the second heat exchange pipeline 22 is connected to the first liquid container 11, the outlet of the second heat exchange pipeline 22 is connected to the first liquid container 11, the inlet end and the outlet end of the second transport pipeline 23 are connected to the inside of the second liquid container 21, and at least a part of the second transport pipeline 23 extends to the heat dissipation part of the second working device of the printing device.

[0038] The second liquid container 21 is used to hold liquid. The liquid in the first liquid container 11 exchanges heat with the liquid in the second container when flowing through the second heat exchange pipeline 22 to absorb the heat of the liquid in the second container, and then flows back to the first liquid container 11. The second heat exchange pipeline 22 can adopt a coiled pipe to increase the heat exchange area.

[0039] In this embodiment, two temperature adjustment units are used to cool two different working devices in the printing device. The temperature of the liquid in the first liquid container 11 is adjusted by the compressor 13 and the condenser 12 in the first temperature adjustment unit 1, and the liquid in the first liquid container 11 is used to cool the first working device. Then, the liquid in the first liquid container 11 is introduced into the second heat exchange pipeline 22 arranged in the second liquid container 21 to cool the liquid in the second liquid container 21, so as to adjust the temperature of the liquid in the second liquid container 21, and the liquid in the second liquid container 21 is used to cool the second working device. Since the two temperature adjustment units use the liquid in different liquid containers to flow into the parts of different working devices that need to be cooled, the temperatures of different working devices can be independently adjusted. Also, since the liquid in the first liquid container 11 is used to adjust the temperature of the liquid in the second liquid container 21, the two temperature adjustment units form an integrated cooling system. In this way, the whole system only needs a set of compressor 13 and condenser 12 to independently adjust the temperatures of multiple different working devices. Therefore, the structure is simple and the cost is lower.

[0040] As Figure 2 shown, in this embodiment, a third temperature adjustment unit 3 is further included. The third temperature adjustment unit 3 includes a third liquid container 31, a third heat exchange pipeline 32, and a third delivery pipeline 33. The third liquid container 31 is used to hold the liquid. The third heat exchange pipeline 32 is located inside the third liquid container 31. The inlet of the third heat exchange pipeline 32 is communicated with the first liquid container 11, and the outlet of the third heat exchange pipeline 32 is communicated with the first liquid container 11. The inlet end and the outlet end of the third delivery pipeline 33 are communicated with the inside of the third liquid container 31, and at least a part of the third delivery pipeline 33 extends to the heat dissipation area of the third working device of the printing device.

[0041] The third liquid container 31 is used to hold the liquid. When the liquid in the first liquid container 11 flows through the third heat exchange pipeline 32, it exchanges heat with the liquid in the third container to absorb the heat of the liquid in the third container and then flows back to the first liquid container 11. The third heat exchange pipeline 32 can adopt a coil pipe to increase the heat exchange area.

[0042] In this embodiment, the liquid in the first liquid container 11 is introduced into the third heat exchange pipeline 32 arranged in the third liquid container 31 to cool the liquid in the third liquid container 31, so as to adjust the temperature of the liquid in the third liquid container 31, and the liquid in the third liquid container 31 is used to cool the third working device. In this way, both the number of working devices with independently adjustable temperature is increased, and no additional compressor 13 and condenser 12 are needed. Therefore, while ensuring a good temperature adjustment effect on the printing device, the system structure is simplified and the cost is reduced.

[0043] The aforementioned first working device, second working device, and third working device can be selected according to the working requirements of the printing device, and there is no limitation here. For example, the first working device, second working device, and third working device can be working devices of the printing device such as a printing medium conveying device, a board card, a print head, etc.

[0044] As an example, in this embodiment, the first working device is a printing medium conveying device, and the first temperature regulating unit 1 further includes a first water pump 16. The inlet of the first water pump 16 is connected to the inside of the first liquid container 11 through a first conveying pipeline 15, and the outlet of the first water pump 16 is connected to the liquid inlet of the printing medium conveying device through the first conveying pipeline 15. The liquid outlet of the printing medium conveying device is connected to the inside of the first liquid container 11 through the first conveying pipeline 15.

[0045] The first water pump 16 pumps the liquid in the first liquid container 11 to the parts of the printing medium conveying device that need to be cooled. The liquid absorbs the heat of the printing medium conveyed in the printing medium conveying device during the process of flowing through these parts. Then it flows back to the first liquid container 11 through the liquid outlet of the printing medium conveying device.

[0046] The printing medium conveying device is a device in the printing device for conveying the printing medium. For example, a water-cooled roller. The liquid in the first liquid container 11 is pumped into the water-cooled roller through the first water pump 16 and the first conveying pipeline 15, so that the printing medium conveyed on the water-cooled roller can be cooled.

[0047] As Figure 3 shown, in this embodiment, a first flow switch 19 can also be provided in the pipeline where the liquid flows back from the liquid outlet of the printing medium conveying device to the inside of the first liquid container 11 to control the connection and disconnection between the first liquid container 11 and the liquid outlet of the first printing medium conveying device.

[0048] The first temperature regulating unit 1 further includes a first temperature sensor 17, and the first temperature sensor 17 is used to detect the temperature of the liquid in the first liquid container 11. One or more first temperature sensors 17 can be provided. When there are multiple first temperature sensors 17, at least one first temperature sensor 17 can be provided respectively in the upper and lower parts of the first liquid container 11.

[0049] As Figure 3 shown, in this embodiment, a first liquid level switch 18 can also be provided. The detection head of the first liquid level switch 18 can be arranged in the first liquid container 11 to generate a signal when the liquid level in the first liquid container 11 exceeds the preset height, so as to avoid the liquid level being too high.

[0050] As Figure 1As shown, in this embodiment, the second temperature regulating unit 2 further includes a fourth delivery pipeline 25 and a fourth water pump 261. The inlet of the second heat exchange pipeline 22 is communicated with the first liquid container 11 through the fourth delivery pipeline 25, and the outlet of the second heat exchange pipeline 22 is communicated with the first liquid container 11 through the fourth delivery pipeline 25. The fourth water pump 261 is disposed on the fourth delivery pipeline 25 and is between the inlet of the second heat exchange pipeline 22 and the first liquid container 11.

[0051] In this embodiment, the fourth water pump 261 is used to deliver the liquid in the first liquid container 11 into the second heat exchange pipeline 22 to exchange heat with the liquid in the second liquid container 21, and the temperature of the liquid in the second liquid container 21 is controlled by controlling the flow rate of the fourth water pump 261. The second temperature regulating unit 2 further includes a second temperature sensor 27 and a first heating device 28. The second temperature sensor 27 is used to detect the temperature of the liquid in the second liquid container 21, and the part of the first heating device 28 for heating is located in the second liquid container 21. The second temperature regulating unit 2 further includes a second liquid level switch 29. The second liquid level switch 29 is used to detect the liquid level of the liquid in the second liquid container 21 and generate a signal when the liquid level in the second liquid container 21 exceeds a preset height to avoid too high a liquid level.

[0052] In this embodiment, a fourth flow switch 262 can also be disposed in the pipeline where the liquid flows back from the second heat exchange pipeline 22 to the first liquid container 11 to control the connection and disconnection between the second heat exchange pipeline 22 and the first liquid container 11.

[0053] As Figure 4 shown, as an example, the second working device is a board card. The second temperature regulating unit 2 further includes a second water pump 241. The inlet of the second water pump 241 is internally communicated with the second liquid container 21 through a second delivery pipeline 23. The outlet of the second water pump 241 is communicated with the inlet end of the board card heat dissipation plate through the second delivery pipeline 23. The outlet end of the board card heat dissipation plate is internally communicated with the second liquid container 21 through the second delivery pipeline 23.

[0054] The liquid in the second liquid container 21 is pumped to the board card heat dissipation plate by the second water pump 241. The liquid absorbs the heat of the board card during the process of flowing through the board card heat dissipation plate and then flows back to the inside of the second liquid container 21. In this embodiment, the temperature of the board card can also be adjusted by adjusting the flow rate of the second water pump 241. In this embodiment, a second flow switch 242 can also be disposed in the pipeline where the liquid flows back from the board card heat dissipation plate to the second liquid container 21 to control the connection and disconnection between the second liquid container 21 and the board card heat dissipation plate. Since there may be multiple board card heat dissipation plates in the printing device, a set of the second water pump 241, the second delivery pipeline 23, and the second flow switch 242 can be provided for each board card.

[0055] As Figure 5 shown, in this embodiment, the third temperature adjustment unit 3 further includes a fifth delivery pipeline 34 and a fifth water pump 392. The inlet of the third heat exchange pipeline 32 is connected to the first liquid container 11 through the fifth delivery pipeline 34, and the outlet of the third heat exchange pipeline 32 is connected to the first liquid container 11 through the fifth delivery pipeline 34. The fifth water pump 392 is arranged on the fifth delivery pipeline 34 and is between the inlet of the third heat exchange pipeline 32 and the first liquid container 11.

[0056] The fifth water pump 392 can be used to deliver the liquid in the first liquid container 11 into the third heat exchange pipeline 32 for heat exchange with the liquid in the third liquid container 31, and the temperature of the liquid in the third liquid container 31 can be controlled by controlling the flow rate of the fifth water pump 392. As Figure 5 shown, the third temperature adjustment unit 3 further includes a third temperature sensor 36 and a second heating device 37. The third temperature sensor 36 is used to detect the temperature of the liquid in the third liquid container 31, and the part of the second heating device 37 for heating is located in the third liquid container 31. The third temperature adjustment unit 3 further includes a third liquid level switch 38. The third liquid level switch 38 is used to detect the liquid level of the liquid in the third liquid container 31 and generate a signal when the liquid level in the third liquid container 31 exceeds a preset height to avoid the liquid level being too high. The aforementioned first heating device 28 and second heating device 37 can adopt heating rods.

[0057] In this embodiment, a fifth flow switch 391 can also be arranged in the pipeline where the liquid flows back from the third heat exchange pipeline 32 to the first liquid container 11 to control the connection and disconnection between the third heat exchange pipeline 32 and the first liquid container 11.

[0058] As an example, in this embodiment, the third working device is a nozzle. The third temperature adjustment unit 3 further includes a third water pump 352. The inlet of the third water pump 352 is internally connected to the third liquid container 31 through a third delivery pipeline 33, the outlet of the third water pump 352 is connected to the inlet end of the nozzle base plate through the third delivery pipeline 33, and the outlet end of the nozzle base plate is internally connected to the third liquid container 31 through the third delivery pipeline 33.

[0059] The liquid in the third liquid container 31 is pumped to the nozzle base plate by the third water pump 352. During the process of flowing through the nozzle base plate, the liquid absorbs the heat of the nozzle base plate and then flows back into the interior of the third liquid container 31. In this embodiment, the temperature of the nozzle base plate can also be adjusted by regulating the flow rate of the third water pump 352. In this embodiment, a third flow switch 351 can also be provided in the pipeline where the liquid flows back from the nozzle base plate to the third liquid container 31 to control the connection and disconnection between the third liquid container 31 and the nozzle base plate. Since there may be multiple nozzle base plates in the printing device, a set of the third water pump 352, the third delivery pipeline 33 and the third flow switch 351 can be provided for each nozzle base plate.

[0060] In this embodiment, a temperature and humidity sensor can also be provided to detect the temperature and humidity of the environment where the printing device is located through the temperature and humidity sensor. The normal temperature water tank can automatically adjust the temperature of the liquid in the liquid container that provides temperature regulation for the circuit board according to this data; the printing system can automatically adjust the printing state of the device according to this data.

[0061] As described above, only the specific embodiments of the present invention are provided. Those skilled in the art can clearly understand that for the convenience and brevity of description, the specific working processes of the systems, modules and units described above can refer to the corresponding processes in the foregoing method embodiments, and will not be described herein again. It should be understood that the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention can easily think of various equivalent modifications or substitutions, and these modifications or substitutions should all be covered within the protection scope of the present invention.

[0062] As described above, only the specific embodiments of the present invention are provided. Those skilled in the art can clearly understand that for the convenience and brevity of description, the specific working processes of the systems, modules and units described above can refer to the corresponding processes in the foregoing method embodiments, and will not be described herein again. It should be understood that the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention can easily think of various equivalent modifications or substitutions, and these modifications or substitutions should all be covered within the protection scope of the present invention.

Claims

1. The liquid cooling system of a printing device, characterized in that, Comprising: A first temperature regulation unit, including a first liquid container, a condenser, a compressor, a first heat exchange pipeline, and a first delivery pipeline. The first heat exchange pipeline is located inside the first liquid container. One end of the first heat exchange pipeline is connected to one end of the condenser, and the opposite end is connected to the other end of the condenser through the compressor. The inlet end and the outlet end of the first delivery pipeline are respectively communicated with the first liquid container, and at least a part of the first delivery pipeline extends to the heat dissipation part of the first working device of the printing device. A second temperature regulation unit, including a second liquid container, a second heat exchange pipeline, and a second delivery pipeline. The second heat exchange pipeline is located inside the second liquid container. The inlet of the second heat exchange pipeline is communicated with the first liquid container, and the outlet of the second heat exchange pipeline is communicated with the first liquid container. The inlet end and the outlet end of the second delivery pipeline are internally communicated with the second liquid container, and at least a part of the second delivery pipeline extends to the heat dissipation part of the second working device of the printing device.

2. The liquid cooling system of the printing device according to claim 1, characterized in that, The first working device is a printing medium conveying device. The first temperature regulation unit further includes a first water pump. The inlet of the first water pump is internally communicated with the first liquid container through the first delivery pipeline. The outlet of the first water pump is communicated with the liquid inlet of the printing medium conveying device through the first delivery pipeline. The liquid outlet of the printing medium conveying device is internally communicated with the first liquid container through the first delivery pipeline.

3. The liquid cooling system of the printing device according to claim 1, characterized in that, The second working device is a circuit board. The second temperature regulation unit further includes a second water pump. The inlet of the second water pump is internally communicated with the second liquid container through the second delivery pipeline. The outlet of the second water pump is communicated with the inlet end of the circuit board heat dissipation plate through the second delivery pipeline. The outlet end of the circuit board heat dissipation plate is internally communicated with the second liquid container through the second delivery pipeline.

4. The liquid cooling system of the printing device according to claim 1, wherein, The second temperature regulation unit further includes a fourth delivery pipeline and a fourth water pump. The inlet of the second heat exchange pipeline is communicated with the first liquid container through the fourth delivery pipeline. The outlet of the second heat exchange pipeline is communicated with the first liquid container through the fourth delivery pipeline. The fourth water pump is arranged on the fourth delivery pipeline and is between the inlet of the second heat exchange pipeline and the first liquid container.

5. The liquid cooling system of the printing device according to claim 1, characterized in that, The first temperature regulation unit further includes a first temperature sensor for detecting the temperature of the liquid in the first liquid container. The second temperature regulation unit further includes a second temperature sensor and a first heating device. The second temperature sensor is used for detecting the temperature of the liquid in the second liquid container. The part of the first heating device for heating is located in the second liquid container.

6. The liquid cooling system of the printing device according to claim 1, wherein It further includes a third temperature regulation unit, which includes a third liquid container, a third heat exchange pipeline, and a third delivery pipeline. The third liquid container is used to hold a liquid. The third heat exchange pipeline is located inside the third liquid container. The inlet of the third heat exchange pipeline is connected to the first liquid container, and the outlet of the third heat exchange pipeline is connected to the first liquid container. The inlet end and the outlet end of the third delivery pipeline are connected to the inside of the third liquid container, and at least a part of the third delivery pipeline extends to the heat dissipation part of the third working device of the printing device.

7. The liquid cooling system of the printing device according to claim 6, characterized in that, The third working device is a print head. The third temperature regulation unit further includes a third water pump. The inlet of the third water pump is connected to the inside of the third liquid container through the third delivery pipeline. The outlet of the third water pump is connected to the inlet end of the print head base plate through the third delivery pipeline. The outlet end of the print head base plate is connected to the inside of the third liquid container through the third delivery pipeline.

8. The liquid cooling system of the printing device according to claim 6, characterized in that, The third temperature regulation unit further includes a fifth delivery pipeline and a fifth water pump. The inlet of the third heat exchange pipeline is connected to the first liquid container through the fifth delivery pipeline. The outlet of the third heat exchange pipeline is connected to the first liquid container through the fifth delivery pipeline. The fifth water pump is arranged on the fifth delivery pipeline and is located between the inlet of the third heat exchange pipeline and the first liquid container.

9. The liquid cooling system of a printing device according to claim 6, characterized in that, The third temperature regulation unit further includes a third temperature sensor and a second heating device. The third temperature sensor is used to detect the temperature of the liquid in the third liquid container. The part of the second heating device for heating is located in the third liquid container.

10. A printing device, characterized in that, It includes the liquid cooling system of the printing device according to any one of claims 1 to 9.

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