Humidity control units, refrigeration units and refrigerated vehicles

Abstract

The embodiments of the present invention disclose a humidity control device, a refrigeration device and a refrigerated vehicle. The humidity control device includes: a liquid storage container, which is provided with a first cooling part inside; a dehumidification container, which is provided with a second cooling part inside, and is connected to different positions of the liquid storage container through a first pipe and a second pipe at different positions; a first output port; a first valve, which is provided on the first pipe, and is used to control the connection between any two of the liquid storage container, the dehumidification container and the first output port; a first input port; a second valve, which is provided on the second pipe, and is used to control the connection between any two of the liquid storage container, the dehumidification container and the first input port; a heating container, which is provided with a heating component inside, and is connected to the dehumidification container and the liquid storage container. The humidity control device provided by the embodiments of the present invention can control the humidity of the refrigerated environment within an appropriate range.

Description

Technical Field

[0001] The invention relates to the technical field of humidity control, and in particular to a humidity control device, a refrigeration component and a refrigerated vehicle. Background Art

[0002] With the continuous development of the economy, people's material needs for life are getting higher and higher, especially the demand for fresh food. Cold chain logistics uses refrigerated transportation to deliver fresh food to various places, thus meeting the needs of people in different regions for fresh food.

[0003] At present, cold chain logistics often use refrigerated trucks for transportation. During the refrigerated transportation process, the refrigerated compartment of the refrigerated truck will inevitably leak cold air, which will cause the temperature in the refrigerated compartment to rise; when the temperature in the refrigerated compartment rises to 0℃, the ice in the refrigerated compartment will melt into water, causing the humidity in the refrigerated compartment to change. The change in humidity will have a great impact on the preservation of the food loaded in the refrigerated compartment. For example, when the humidity in the refrigerated compartment exceeds the suitable humidity range of agricultural products such as fruits, vegetables or seeds, it will inevitably affect the quality of the agricultural products and even cause the fruits, vegetables and other food ingredients to rot, which will cause huge economic losses.

[0004] It can be seen that in cold chain logistics, it is necessary to provide a humidity control device to control the humidity of the refrigerated environment to maintain it within a suitable range for the agricultural products in the refrigerated environment. Summary of the invention

[0005] Therefore, the embodiments of the present invention provide a humidity control device, a refrigeration device and a refrigerated vehicle, which can control the humidity of the refrigerated environment within a suitable range.

[0006] On the one hand, an embodiment of the present invention provides a humidity control device, comprising: a liquid storage container, which is provided with a first cooling part inside; a dehumidification container, which is provided with a second cooling part inside, and is connected to different positions of the liquid storage container through a first pipe and a second pipe at different positions; a first output port; a first valve, which is provided in the first pipe and is used to control the connection between the liquid storage container, the dehumidification container and any two of the first output port; a first input port; a second valve, which is provided in the second pipe and is used to control the connection between the liquid storage container, the dehumidification container and any two of the first input port; a heating container, which is provided with a heating component inside and is connected to the dehumidification container and the liquid storage container.

[0007] In one embodiment of the present invention, the first cooling part is arranged at the upper part of the liquid storage container, and the second cooling part is arranged at the upper part of the dehumidification container; wherein, the two ends of the first pipe are respectively connected to the upper part of the liquid storage container and the upper part of the dehumidification container; the two ends of the second pipe are respectively connected to the corresponding lower part of the liquid storage container and the opposite lower part of the dehumidification container; wherein, the connecting position of the dehumidification container and the heating container is located below the second cooling part.

[0008] In one embodiment of the present invention, the heating container is connected to the dehumidification container through a third pipe and a fourth pipe respectively; the heating assembly is located at the lower part of the heating container; wherein, one end of the third pipe is connected to the lower part of the dehumidification container, and one end of the fourth pipe is connected to the upper part of the dehumidification container and is located below the second cooling part; the other end of the third pipe is connected to the upper part of the heating container, and the other end of the fourth pipe is connected to the lower part of the heating container; wherein, a first circulation pump is provided on the third pipe to pump the dehumidification solution in the dehumidification container to the heating container; and the fourth pipe returns the dehumidification solution in the heating container to the dehumidification container.

[0009] In one embodiment of the present invention, the humidity control device further comprises: a heat exchanger, which is disposed between the heating container and the dehumidification container and is connected to the heating container, the dehumidification container and the liquid storage container.

[0010] In one embodiment of the present invention, the humidity control device further comprises: a second circulation pump, which is arranged at the first input port.

[0011] On the other hand, a refrigeration device provided by an embodiment of the present invention includes: a humidity control device as described in any one of the above embodiments; a refrigeration device, including: a second input port, arranged at the upper part of the refrigeration device and connected to the first output port of the humidity control device; a second output port, arranged at the lower part of the refrigeration device and connected to the first input port of the humidity control device; a humidity sensor, arranged inside the refrigeration device.

[0012] In one embodiment of the present invention, the refrigeration device further includes: a second circulation pump connected between the first input port and the second output port.

[0013] On the other hand, an embodiment of the present invention provides a refrigerated truck, comprising a refrigerated truck body; a humidity control device as described in any one of the above embodiments, disposed on the refrigerated truck body; a refrigerated compartment, disposed on the refrigerated truck body, comprising: a second input port, disposed on the upper portion of the refrigerated compartment and connected to the first output port of the humidity control device; a second output port, disposed on the lower portion of the refrigerated compartment and connected to the first input port of the humidity control device; a humidity sensor, disposed inside the refrigerated compartment; and a second circulating pump, connected between the first input port and the second output port.

[0014] In one embodiment of the present invention, the heating component of the humidity control device is connected to the engine of the refrigerated vehicle body, and the engine heats the heating component; the first cooling part and the second cooling part of the humidity control device are respectively connected to the air-conditioning equipment of the refrigerated vehicle body, and the first cooling part and the second cooling part receive cold air from the air-conditioning equipment.

[0015] In one embodiment of the present invention, the first cooling part and the second cooling part of the humidity control device are respectively connected to the outside of the refrigerated truck to receive cold air outside the refrigerated truck.

[0016] In summary, the above-mentioned embodiments of the present application may have the following advantages or beneficial effects: the humidity of the refrigerated environment can be controlled so that the humidity of the refrigerated environment is maintained within an appropriate range, thereby ensuring the transportation quality of agricultural products such as fruits, vegetables or seeds, and avoiding economic losses caused by the deterioration of crop quality due to improper humidity maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0018] Figure 1 This is a schematic structural diagram of a humidity control device 100 provided in the first embodiment of the present invention.

[0019] Figure 2 This is a schematic structural diagram of a refrigeration device 300 provided in the second embodiment of the present invention.

[0020] Description of main component symbols:

[0021] 100 is a humidity control device; 10 is a liquid storage container; 21 is a first cooling part; 22 is a second cooling part; 30 is a dehumidification container; 41 is a first output port; 42 is a second input port; 51 is a first valve; 52 is a second valve; 53 is a third valve; 54 is a fourth valve; 61 is a first pipe; 62 is a second pipe; 63 is a third pipe; 64 is a fourth pipe; 65 is a fifth pipe; 66 is a sixth pipe; 70 is a heating container; 71 is a heating component; 80 is a heat exchanger; 91 is a first circulation pump; 92 is a second circulation pump; 300 is a refrigeration device; 200 is a refrigeration device; refrigeration space 201; 210 is a humidity sensor; 231 is a second input port; 232 is a second output port. DETAILED DESCRIPTION

[0022] 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.

[0023] [First embodiment]

[0024] See also Figure 1 , which is a humidity control device provided by the first embodiment of the present invention, the humidity control device 100, for example, comprises: a liquid storage container 10, a dehumidification container 30 and a heating container 70. Specifically, a first cooling part 21 is provided inside the liquid storage container 10, a second cooling part 22 is provided inside the dehumidification container 30, and the liquid storage container 10 is connected to the dehumidification container 30 through a first pipe 61 and a second pipe 62 respectively, and the first pipe 61 and the second pipe 62 are connected at different positions of the liquid storage container 10 and the dehumidification container 30 respectively; a heating component 71 is provided inside the heating container 70, and the heating container 70 is connected to the dehumidification container 30 and the liquid storage container 10 through a third pipe 63 and a fifth pipe 65 respectively.

[0025] The liquid storage container 10 can contain water for humidification of liquid, the first cooling part 21 is located at the upper part of the liquid storage container 10, and one end of the first pipe 61 is connected to the upper part of the liquid storage container 10, such as the top of the liquid storage container 10, and correspondingly, one end of the second pipe 62 is connected to the lower part of the liquid storage container 10, such as the bottom of the liquid storage container 10; the dehumidification container 30 can contain dehumidification solution, the second cooling part 22 is located at the upper part of the dehumidification container 30, and the other end of the first pipe 61 is connected to the upper part of the dehumidification container 30, such as the top of the dehumidification container 30, and correspondingly, the other end of the second pipe 62 is connected to the lower part of the dehumidification container 30, such as the bottom of the dehumidification container 30. The dehumidification solution is, for example, a mixed solution of one or more of calcium chloride solution, lithium chloride solution, lithium bromide solution or triethylene glycol aqueous solution, and of course, the dehumidification solution can also be a solution having the same dehumidification function as the above-mentioned solutions.

[0026] Furthermore, the humidity control device 100, for example, also includes: a first output port 41 connected to the liquid storage container 10 and the dehumidification container 30 respectively through a first pipe 61, and a first valve 51 arranged on the first pipe 61, the first valve 51 is, for example, a three-way valve, and is used to control the connection between the liquid storage container 10 and the first output port 41, the connection between the liquid storage container 10 and the dehumidification container 30, and the connection between the dehumidification container 30 and the first output port 41.

[0027] Furthermore, the humidity control device 100, for example, also includes: a first input port 42 connected to the liquid storage container 10 and the dehumidification container 30 respectively through a second pipe 62, and a second valve 52 arranged on the second pipe 62, the second valve 52 is, for example, a three-way valve, and is used to control the connection between the liquid storage container 10 and the first input port 42, the connection between the liquid storage container 10 and the dehumidification container 30, and the connection between the dehumidification container 30 and the first input port 42.

[0028] Preferably, a second circulation pump 92 is also provided on the second pipeline 62 , and the second circulation pump 92 is arranged between the first input port 42 and the second valve 52 . The second circulation pump 92 is used to pump air that needs to be humidified or dehumidified to the dehumidification container 30 or the liquid storage container 10 .

[0029] Furthermore, the humidity control device 100 further includes, for example: a sixth pipe 66 and a third valve 53 disposed on the sixth pipe 66; the sixth pipe 66 is connected between the liquid storage container 10 and the dehumidification container 30, and the flow of the water in the liquid storage container 10 and the dehumidification solution in the dehumidification container 30 can be conducted under the action of the third valve 53. For example, the two ends of the sixth pipe 66 are respectively connected to the lower part of the liquid storage container 10 and the lower part of the dehumidification container 30, and the third valve 53 is used to control whether the sixth pipe 66 is conducted, and the third valve 53 can be a one-way solenoid valve, and of course it can also be other valves.

[0030] Furthermore, the humidity control device 100 further includes, for example: a fourth valve 54 . The fourth valve 54 is disposed on the first pipe 61 and is located between the first valve 51 and the liquid storage container 10 .

[0031] The humidity control device 100 further includes, for example, a heat exchanger 80 disposed between the dehumidification container 30 and the heating container 70. For example, the heating component 71 is disposed at the lower portion of the heating container 70, one end of the third pipe 63 is connected to the lower portion of the dehumidification container 30, the other end of the third pipe 63 is connected to the upper portion of the heating container 70, and the portion of the third pipe 63 passing through the heat exchanger 80 is spiral, and the portion of the other end of the third pipe 63 extending into the heating container 70 is connected to a plurality of nozzles, and the plurality of nozzles are directly facing the heating component 71.

[0032] Preferably, a first circulation pump 91 is also provided on the third pipeline 63 . The first circulation pump 91 is arranged between the heat exchanger 80 and the dehumidification container 30 . The first circulation pump 91 is used to pump the dehumidification solution in the dehumidification container 30 into the heating container 70 .

[0033] Furthermore, the dehumidification container 30 and the heating container 70 are also connected through the fourth pipe 64. For example, the fourth pipe 64 includes two parts, the first part is a pipe connecting the heating container 70 and the heat exchanger 80, and the second part is a pipe connecting the heat exchanger 80 and the heating container 70; one end of the first part of the fourth pipe 64 is connected to the upper part of the dehumidification container 30, and the one end of the first part is inserted into the dehumidification container 30 and connected to a plurality of nozzles, and is located below the second cooling part 22, the other end of the first part of the fourth pipe 64 is connected to the lower part of the heat exchanger 80, one end of the second part of the fourth pipe 64 is connected to the upper part of the heat exchanger 80, and the other end of the second part of the fourth pipe 64 is connected to the lower part of the heating container 70.

[0034] Among them, the heating container 70 is also connected to the liquid storage container 10 through the fifth pipe 65, wherein one end of the fifth pipe 65 is connected to the upper part of the heating container 70, and the other end of the fifth pipe 65 is connected to the lower part of the liquid storage container 10. Preferably, the other end of the fifth pipe 65 is inserted into the water in the liquid storage container 10.

[0035] Preferably, the liquid storage container 10 is provided with, from top to bottom, a connecting point of the first pipe 61, the first cooling part 21, the other end of the fifth pipe 65, a connecting point of the sixth pipe 66, and a connecting point of the second pipe 62; the dehumidification container 30 is provided with, from top to bottom, a connecting point of the first pipe 61, the second cooling part 22, the connecting point of the fourth pipe 64, the connecting point of the sixth pipe 66, the connecting point of the third pipe 63, and a connecting point of the second pipe 62.

[0036] Preferably, the installation height of the heating container 70 should be higher than the installation height of the heat exchanger 80; the dehumidification container 30 and the liquid storage container 10 should be installed at the same level and lower than the installation height of the heat exchanger 80. The installation height is the level at which the bottom of the corresponding components is located.

[0037] Preferably, the temperature of the heating assembly 71 in the heating container 70 should be higher than the boiling point of water but lower than the boiling point of the dehumidifying solution. The lowest temperature provided by the first cooling part 21 and the second cooling part 22 should not be less than 0°C.

[0038] [Second embodiment]

[0039] See also Figure 2 , which is a refrigeration device provided in the second embodiment of the present invention. The refrigeration device 300, for example, includes: the humidity control device 100 as described in the first embodiment and a refrigeration device 200 connected to the humidity control device 100.

[0040] Specifically, the refrigeration device 200 may be a refrigeration device such as a refrigerated warehouse or a refrigerated compartment having a refrigerated space 201. The refrigeration device 200 includes, for example, the refrigerated space 201, a second output port 232 is provided at the lower portion of the refrigerated space 201, a second input port 231 is provided at the upper portion of the refrigerated space 201, and a humidity sensor 210 is provided inside the refrigerated space 201. The humidity sensor 210 is, for example, a humidity sensor for detecting and acquiring humidity data in the refrigerated space 201.

[0041] The first output port 41 is paired and connected with the second input port 231 , and the first input port 42 is paired and connected with the second output port 232 , so as to realize the connection between the humidity control device 10 and the refrigeration equipment 200 .

[0042] The usage of the refrigeration device 300 includes at least the following two situations:

[0043] In the first case, when crop seeds are stored in the cold storage space 201, the humidity in the cold storage space 201 must be strictly controlled between 50% and 60%. When the humidity sensor 210 detects that the humidity in the cold storage space 201 is greater than this range, a dehumidification process is required, specifically: setting the first valve 51 and connecting the dehumidification container 30 to the first output port 41 through the first pipe 61, and the dehumidification container 30 is not connected to the liquid storage container 10, and the liquid storage container 10 is also not connected to the first output port 41; closing the third valve 53 so that the dehumidification container 30 is not connected to the liquid storage container 10; setting the second valve 52 and connecting the dehumidification container 30 to the first output port 41 through the second pipe 62, and the dehumidification container 30 is not connected to the liquid storage container 10, and the liquid storage container 10 is also not connected to the first output port 41.

[0044] At this time, on the one hand, under the action of the second cooling part 22, the dehumidification solution with a lower temperature in the dehumidification container 30 flows through the heat exchanger 80 and then enters the heating container 70 under the drive of the first circulation pump 91, and is sprayed onto the heating component 71 through multiple nozzles connected to the third pipe; due to the high temperature of the heating component 71, the water in the dehumidification solution is evaporated into water vapor, and the water vapor flows back to the liquid storage container 10 through the fifth pipe 65, and condenses into water through the first cooling part 21; at the same time, the heated unsaturated dehumidification solution in the heating container 7 flows into the heat exchanger 80 through the fourth pipe 64 connected to the lower part of the heating container 70, and then flows back to the dehumidification container 30 through the fourth pipe 64; the first circulation pump 91 circulates continuously to drive the unsaturated dehumidification solution in the dehumidification container 30 to perform the above circulation.

[0045] Preferably, the heat exchanger 80 may also be connected to the liquid storage container 10 via the fifth pipe 65 to transport the water vapor in the heat exchanger 80 to the liquid storage container 10, which will not be described in detail here.

[0046] On the other hand, driven by the second circulation pump 92, the air to be dehumidified in the cold storage space 201 is extracted through the coordinated connection of the first input port 42 and the second output port 232, and the air to be dehumidified is transported from the bottom of the dehumidification container 30 to the inside of the dehumidification container 30. The dehumidification solution in the dehumidification container 30 evaporates a lot of water due to the heat treatment of the heating component 71. Therefore, the dehumidification solution is unsaturated, and the unsaturated dehumidification solution can just absorb the moisture in the air to be dehumidified; the air to be dehumidified is converted into dry air after being treated with the unsaturated dehumidification solution, and the dry air is converted into cooled dry air after being cooled by the second cooling part 22. The cooled dry air enters the cold storage space 201 through the first pipe 61, the first output port 41 and the second input port 231, thereby realizing the dehumidification process.

[0047] In the second case, when the refrigerated space 201 is loaded with crops such as fruits and vegetables, the humidity in the refrigerated space 201 should be maintained at 80% to 90%. When the humidity sensor 210 detects that the humidity in the refrigerated space 201 is less than this range, the humidity needs to be increased. The specific process is: the first valve 51 is set to connect the liquid storage container 10 with the first output port 41, and the dehumidification container 30 is not connected to the first output port 41, and the dehumidification container 30 is also not connected to the liquid storage container 10; when the fourth valve 54 is set, the fourth valve 54 is opened; the third valve 53 is opened to allow the water in the liquid storage container 10 and the dehumidification solution in the dehumidification container 30 to exchange flow, so that the dehumidification solution in the dehumidification container 30 is in a saturated state; the second valve 52 is set to connect the liquid storage container 10 with the first output port 41, and the dehumidification container 30 is not connected to the first output port 41, and the dehumidification container 30 is also not connected to the liquid storage container 10.

[0048] At this time, on the one hand, the dehumidification solution in the dehumidification container 30 flows through the heat exchanger 80 and enters the heating container 70 under the drive of the first circulation pump 91, and is sprayed onto the heating component 71 through multiple nozzles connected to the third pipe 63; the saturated dehumidification solution will generate a large amount of water vapor after being heated, and the water vapor will enter the liquid storage container 10 through the fifth pipe 65 and condense into water through the first cooling part 21; and the unsaturated dehumidification solution generated after the water in the heating container 70 is evaporated will flow back to the dehumidification container 30 through the fourth pipe 64. The first circulation pump 91 keeps circulating to drive the saturated dehumidification solution in the dehumidification container 30 to perform the above circulation.

[0049] On the other hand, the liquid storage container 10 obtains a large amount of water through the heating container 70, and the second circulation pump 92 pumps the air to be humidified at the bottom of the refrigerated space 201 into the liquid storage container 10 through the second pipe 62, and the air to be humidified enters the liquid storage container 10 from the bottom of the liquid storage container 10, and is humidified by the water in the liquid storage container 10 to obtain humidified air, which is cooled by the first cooling part 21 and then flows to the refrigerated space 201 through the first pipe 51, the first output port 41 and the second input port 231. Thus, the humidification of the cold device 200 is achieved.

[0050] [Third embodiment]

[0051] A second embodiment of the present invention provides a refrigerated vehicle, which includes, for example, the humidity control device 100 and a refrigerated compartment as described in the first embodiment.

[0052] Among them, the refrigerated compartment is configured the same as the refrigeration device 200 in the second embodiment, and the connection method between the refrigerated compartment and the humidity control device 100 refers to the connection method of the refrigeration device 300 in the above-mentioned second embodiment, which will not be repeated here.

[0053] Among them, the engine of the refrigerated vehicle body is connected to the heating component 71 of the humidity control device 100, and the engine provides heat to the heating component 71 when running; the air-conditioning equipment of the refrigerated vehicle body is connected to the first cooling part 21 and the second cooling part 22 of the humidity control device 100, and the first cooling part 21 and the second cooling part 22 respectively receive the cold air of the air-conditioning equipment to achieve a cooling effect.

[0054] Furthermore, the first cooling part 21 and the second cooling part 22 of the humidity control device 100 can also be connected to the outside of the refrigerated truck respectively to receive the cold air outside the refrigerated truck to achieve a cooling effect. This implementation method can be implemented in winter. For example, in winter, when the refrigerated truck is running, the first cooling part 21 and the second cooling part 22 respectively receive the cold air flowing outside the refrigerated truck to cool the liquid storage container 10 and the dehumidification container 30 respectively.

[0055] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A humidity control device, characterized in that: include: A liquid storage container is provided with a first cooling part inside, and the first cooling part is arranged on the upper part of the liquid storage container; The dehumidification container is provided with a second cooling part inside, which is connected to different positions of the liquid storage container through the first pipe and the second pipe at different positions, and the second cooling part is arranged at the upper part of the dehumidification container; A heating container, which is provided with a heating component inside and is connected to the dehumidification container and the liquid storage container, and the heating component is located at the lower part of the heating container; a heat exchanger, disposed between the heating container and the dehumidification container, and communicating with the heating container, the dehumidification container and the liquid storage container; a first pipe and a second pipe, wherein two ends of the first pipe are respectively connected to the upper part of the liquid storage container and the upper part of the dehumidification container, and two ends of the second pipe are respectively connected to the corresponding lower part of the liquid storage container and the lower part of the dehumidification container, and the connecting position between the dehumidification container and the heating container is located below the second cooling part; a third pipe, one end of the third pipe being connected to the lower part of the dehumidification container, the other end of the third pipe being connected to the upper part of the heating container, and the third pipe being provided with a first circulation pump to pump the dehumidification solution in the dehumidification container to the heating container; a fourth pipe, one end of which is connected to the upper part of the dehumidification container and is located below the second cooling part, and the other end of which is connected to the lower part of the heating container, and the fourth pipe returns the dehumidification solution in the heating container to the dehumidification container; a first output port; a first valve, disposed on the first pipeline, for controlling the communication between any two of the liquid storage container, the dehumidification container and the first output port; First input port; The second valve is arranged on the second pipeline, and is used to control the communication between any two of the liquid storage container, the dehumidification container and the first input port.

2. The humidity control device according to claim 1, characterized in that: Also includes: The second circulation pump is arranged at the first input port.

3. A refrigeration device, characterized in that: include: The humidity control device according to any one of claims 1 to 2; Refrigeration equipment, including: a second input port disposed on an upper portion of the refrigeration device and connected to the first output port of the humidity control device; a second output port disposed at a lower portion of the refrigeration device and connected to the first input port of the humidity control device; The humidity sensor is arranged inside the refrigeration device.

4. The refrigeration device according to claim 3, characterized in that: Also includes: The second circulation pump is connected between the first input port and the second output port.

5. A refrigerated vehicle, characterized in that: include: Refrigerated car bodies; The humidity control device according to any one of claims 1 to 2, arranged on the refrigerated vehicle body; The refrigerated compartment is arranged on the refrigerated vehicle body and comprises: a second input port disposed at an upper portion of the refrigerated compartment and connected to the first output port of the humidity control device; a second output port disposed at a lower portion of the refrigerated compartment and connected to the first input port of the humidity control device; a humidity sensor disposed inside the refrigerated compartment; The second circulation pump is connected between the first input port and the second output port.

6. The refrigerated vehicle according to claim 5, characterized in that: The heating component of the humidity control device is connected to the engine of the refrigerated vehicle body, and the engine heats the heating component; the first cooling part and the second cooling part of the humidity control device are respectively connected to the air-conditioning equipment of the refrigerated vehicle body, and the first cooling part and the second cooling part receive cold air from the air-conditioning equipment.

7. The refrigerated vehicle according to claim 6, characterized in that: The first cooling part and the second cooling part of the humidity control device are respectively connected to the outside of the refrigerated vehicle to receive cold air outside the refrigerated vehicle.

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