Humidity control device and cold store

Abstract

The application discloses a humidity control device, and relates to the technical field of cold storage internal environment humidity control, which comprises a control cabinet, a heating device and a condensing device. The control cabinet is internally provided with a containing cavity. An air inlet for connecting the containing cavity and a cold cavity is arranged on the side wall of the control cabinet. An air outlet for connecting the containing cavity and the cold cavity is arranged on the side wall of the control cabinet. The heating device is arranged in the containing cavity and is used for heating low-temperature gas in the cold cavity entering the containing cavity through the air inlet to form heated gas. The condensing device is arranged in the containing cavity and is used for cooling and condensing the heated gas to form condensate water in the heated gas and dry gas. The dry gas can be discharged into the cold cavity through the air outlet. The application further provides a cold storage comprising the humidity control device. The humidity control device and the cold storage can improve the dehumidification effect of the cold storage.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of humidity control in cold storage, and in particular to a humidity control device and a cold storage. BACKGROUND

[0002] For the storage requirements of medicines and medical devices, national laws and regulations and the Chinese Pharmacopoeia have requirements for temperature and humidity. Most medicine and medical device production, sales and use units can meet the temperature requirements, but most medicine storage cold storages do not have humidity control devices and cannot control the relative humidity of the cold storage. Some existing humidity control devices, such as the rack-type environment humidity control device provided in patent publication No. CN114791745A, are suitable for normal or high temperature environments in machine rooms, but if applied to humidity control in low-temperature cold storages, the gas in the cold storage enters the device and condensate is generated on the condensing surface of the condenser during the dehumidification process. However, because the temperature of the gas in the cold storage is low, the temperature difference between the low-temperature environment air in the cold storage and the condensing surface of the condenser is not large during use, and it is difficult to form condensate on the condensing surface of the condenser, and the dehumidification effect is not good. SUMMARY

[0003] The purpose of the present application is to provide a humidity control device and a cold storage to solve the problems existing in the prior art and improve the dehumidification effect of the cold storage.

[0004] To achieve the above-mentioned purpose, the present application provides the following solutions.

[0005] The present application provides a humidity control device, which comprises a control cabinet, a heating device and a condensing device. The control cabinet has a receiving cavity. An air inlet for connecting the receiving cavity and a cold cavity is arranged on the side wall of the control cabinet. An air outlet for connecting the receiving cavity and the cold cavity is arranged on the side wall of the control cabinet. The heating device is arranged in the receiving cavity and is used to heat the low-temperature gas in the cold cavity that enters the receiving cavity through the air inlet to form heated gas. The condensing device is arranged in the receiving cavity and is used to cool and condense the heated gas to form condensate water in the heated gas and dry gas from the heated gas. The dry gas can be discharged into the cold cavity through the air outlet.

[0006] Preferably, the humidity control device further comprises a humidifying device arranged in the receiving cavity. The water inlet of the humidifying device can be connected to the condensate water, and the humidifying device can atomize the condensate water and discharge it into the cold cavity through the atomizing outlet.

[0007] Preferably, the accommodating cavity has a first partition plate, which separates the accommodating cavity into a first cavity and a second cavity, and a first through hole is arranged on the upper portion of the first partition plate and communicates the first cavity and the second cavity; the air inlet is arranged on the side wall of the first cavity, the heating device is arranged in the first cavity, the air outlet is arranged on the side wall of the second cavity, and the condensing device and the humidifying device are arranged in the second cavity; the heating device is used for heating the low-temperature gas entering the first cavity through the air inlet to form the heated gas, the heated gas enters the second cavity through the first through hole, and the condensing device is used for cooling and condensing the heated gas in the second cavity to form condensed water from the steam in the heated gas and to form the dry gas from the heated gas.

[0008] Preferably, a second partition plate is arranged in the first cavity, which separates the first cavity into a heating cavity and a communicating cavity from bottom to top; the heating device is arranged in the heating cavity, the air inlet is arranged on the side wall of the heating cavity and is used for communicating the heating cavity and the cold cavity; a second through hole is arranged on the second partition plate, which communicates one end of a gas pipeline, the other end of the gas pipeline passes through the first through hole and is connected and communicated with the air outlet; the gas pipeline includes a condensing section in the second cavity, the condensing device is arranged in the condensing section, and a water outlet is arranged at the lower portion of the condensing section and is used for communicating the inside of the condensing section and the second cavity and for flowing out of the condensed water; the humidifying device is arranged below the condensing section and is used for communicating with the water outlet so that the condensed water can enter the humidifying device.

[0009] Preferably, the condensing section includes a first inclined section and a second inclined section fixedly connected along the gas conveying direction, and the longitudinal section of the condensing section is a V-shaped section with an opening upward; the condensing device is arranged in the first inclined section and / or the second inclined section; the lower portion of the connecting end of the first inclined section and the second inclined section is provided with the water outlet; and the lower portion of the water outlet has a water collecting tank fixedly arranged in the second cavity, the humidifying device is arranged below the water collecting tank, and the water collecting tank is used for collecting the condensed water and communicating with the humidifying device through a water outlet pipeline.

[0010] Preferably, the device further comprises a refrigeration device, which is used for refrigerating the dry gas, and the refrigeration device is arranged in the gas pipeline and is located behind the condensing device along the gas conveying direction.

[0011] Preferably, the device further comprises an air suction device arranged at the air inlet, which is used for sucking the low-temperature gas in the cold cavity into the accommodating cavity.

[0012] Preferably, the humidity control device further comprises a humidity monitoring component arranged in the cold cavity and configured to send a humidity signal, and a central control component in communication with the humidity monitoring component, the heating device, the condensing device, the humidifying device, the refrigerating device and the air suction device, and configured to receive the humidity signal and control the operation of the heating device, the condensing device, the humidifying device, the refrigerating device and the air suction device.

[0013] Preferably, the humidity control device further comprises a water storage device configured to store standby water, and the water storage device is in communication with the water inlet of the humidifying device through a water pump.

[0014] The application further provides a refrigeration house comprising a cold cavity and the humidity control device as described above, and the air inlet and the air outlet of the humidity control device are in communication with the cold cavity.

[0015] The application has the following technical effects compared with the prior art:

[0016] The humidity control device provided by the application can continuously circulate the low-temperature gas in the cold cavity, the heating device heats the low-temperature gas entering the accommodating cavity to form heated gas, the heated gas is cooled and condensed by the condensing device, the steam in the heated gas forms condensed water to make the heated gas become dry gas, and the dry gas reenters the cold cavity through the air outlet, so that the dehumidification of the cold cavity is completed. The heating device heats the low-temperature gas entering the accommodating cavity to form heated gas, which increases the temperature difference between the steam and the condensing device, facilitates the condensation of more condensed water, and thus improves the dehumidification effect.

[0017] The humidity control device provided by the application can continuously circulate the low-temperature gas in the cold cavity, the heating device heats the low-temperature gas entering the accommodating cavity to form heated gas, the heated gas is cooled and condensed by the condensing device, the steam in the heated gas forms condensed water to make the heated gas become dry gas, and the dry gas reenters the cold cavity through the air outlet, so that the dehumidification of the cold cavity is completed. The heating device heats the low-temperature gas entering the accommodating cavity to form heated gas, which increases the temperature difference between the steam and the condensing device, facilitates the condensation of more condensed water, and thus improves the dehumidification effect. BRIEF DESCRIPTION OF DRAWINGS

[0018] In order to make the technical solutions in the embodiments of the present application or the prior art clearer, the accompanying drawings needed in the embodiments will be briefly introduced. Obviously, the accompanying drawings in the following description only need to be some embodiments of the present application, and other drawings can be obtained by those skilled in the art without any creative effort.

[0019] Figure 1 A schematic view of an axial structure of the humidity control device provided for Embodiment One;

[0020] Figure 2 Another schematic view of an axial structure of the humidity control device provided for Embodiment One;

[0021] Figure 3 A front view of the humidity control device provided for Embodiment One.

[0022] Figure: 1-humidity control device; 10-control cabinet; 11-housing cavity; 111-first cavity; 1111-heating cavity; 1112-communication cavity; 112-second cavity; 12-air inlet; 13-air outlet; 14-first partition; 141-first through hole; 15-second partition; 151-second through hole; 20-heating device; 30-condensing device; 40-humidifying device; 41-atomizing outlet; 50-gas pipeline; 51-condensing section; 511-first inclined section; 512-second inclined section; 513-water outlet; 60-water collecting tank; 61-water outlet pipeline; 70-refrigeration device; 80-air suction device. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only some embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without any creative effort belong to the scope of protection of the present application.

[0024] The purpose of the present application is to provide a humidity control device and a cold storage to solve the problems in the prior art and improve the dehumidification effect of the cold storage.

[0025] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the present application will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0026] Embodiment One

[0027] The embodiment provides a humidity control device 1, which comprises a control cabinet 10, a heating device 20 and a condensing device 30, the control cabinet 10 has a containing cavity 11, a gas inlet 12 for connecting the containing cavity 11 and a cold cavity is arranged on the side wall of the control cabinet 10, and a gas outlet 13 for connecting the containing cavity 11 and the cold cavity is arranged on the side wall of the control cabinet 10; the heating device 20 is arranged in the containing cavity 11, and the heating device 20 is used for heating low-temperature gas in the cold cavity to form heated gas; the condensing device 30 is arranged in the containing cavity 11, and the condensing device 30 is used for cooling and condensing the heated gas to form condensed water in the heated gas and to form dry gas from the heated gas, and the dry gas can be discharged into the cold cavity through the gas outlet 13.

[0028] In the process of dehumidifying the cold storage, the low-temperature gas in the cold storage is introduced into the containing cavity 11 of the control cabinet 10 through the gas inlet 12, the low-temperature gas in the containing cavity 11 is heated by the heating device 20 to form heated gas, which does not affect other low-temperature gas in the cold cavity, the heated gas is cooled and condensed by the condensing device 30, the steam in the heated gas forms condensed water to make the heated gas become dry gas, and the dry gas reenters the cold storage through the gas outlet 13, so that the dehumidification of the cold storage is continuously circulated; since the low-temperature gas in the containing cavity 11 is heated by the heating device 20 to form heated gas, the temperature difference between the steam and the condensing device 30 is increased, more condensed water is condensed, and the dehumidification effect is improved.

[0029] In an optional scheme of the embodiment, preferably, the humidity control device 1 provided by the embodiment further comprises a humidifying device 40, and the humidifying device 40 is arranged in the containing cavity 11; a water inlet of the humidifying device 40 can introduce condensed water, the humidifying device 40 can atomize the condensed water and discharge the condensed water into the cold cavity through an atomizing outlet 41; by arranging the humidifying device 40 in the containing cavity 11, the integration of the humidity control device 1 can be improved; and the humidifying device 40 can utilize the condensed water generated in the dehumidification process to humidify the cold storage and save water resources.

[0030] Specifically, the humidifying device 40 can be an ultrasonic atomizing device.

[0031] In an optional solution of the embodiment, preferably, the accommodating cavity 11 has a first partition plate 14, the first partition plate 14 divides the accommodating cavity 11 into a first cavity 111 and a second cavity 112, and the first partition plate 14 has a first through hole 141 at an upper portion of the first partition plate 14, the first through hole 141 being in communication with the first cavity 111 and the second cavity 112; the air inlet 12 is arranged on a side wall of the first cavity 111, the heating device 20 is arranged in the first cavity 111, the air outlet 13 is arranged on a side wall of the second cavity 112, and the condensing device 30 and the humidifying device 40 are arranged in the second cavity 112; the heating device 20 is used for heating the low-temperature gas entering the first cavity 111 through the air inlet 12 to form heated gas, the heated gas is used for entering the second cavity 112 through the first through hole 141, and the condensing device 30 is used for cooling and condensing the heated gas in the second cavity 112 to form condensed water from the steam in the heated gas and to form dry gas from the heated gas; the low-temperature gas heating and the condensing and humidifying processes are separated by the first partition plate 14, and the mutual influence is avoided.

[0032] In an optional solution of the embodiment, preferably, the first cavity 111 has a second partition plate 15, the second partition plate 15 divides the first cavity 111 from bottom to top into a heating cavity 1111 and a communication cavity 1112; the heating device 20 is arranged in the heating cavity 1111, the air inlet 12 is arranged on a side wall of the heating cavity 1111 and is used for communicating the heating cavity 1111 and the cold cavity; the second partition plate 15 has a second through hole 151, the second through hole 151 is in communication with one end of a gas pipeline 50, the other end of the gas pipeline 50 passes through the first through hole 141 and is connected with the air outlet 13 and is in communication; the gas pipeline 50 includes a condensing section 51 in the second cavity 112, the condensing section 51 has a water outlet 513 at a lower portion of the condensing section 51, the water outlet 513 being in communication with an inside of the condensing section 51 and the second cavity 112 and being used for flowing out of the condensed water; the humidifying device 40 is arranged below the condensing section 51 and is used for being in communication with the water outlet 513 so that the condensed water can enter the humidifying device 40; the first cavity 111 is divided into the heating cavity 1111 and the communication cavity 1112 by the second partition plate 15, in the dehumidification process, the heated gas in the heating cavity 1111 can enter the condensing section 51 in the gas pipeline 50 in the second cavity 112 through the gas pipeline 50 in the communication cavity 1112, the heated gas is cooled and condensed by the condensing device 30 in the condensing section 51, the condensed water flows out through the water outlet 513, and the dry gas is discharged to the cold storage through the air outlet 13; the gas pipeline 50 is arranged to better realize the gas circulation, and the condensing device 30 is arranged in the gas pipeline 50 to better realize the dehumidification.

[0033] Specifically, the heating device 20 can be configured as a heating plate located at the bottom of the heating chamber 1111, and heat sinks can be provided on the heating plate to better heat the low-temperature gas in the heating chamber 1111; in addition, the heating device 20 can also be configured as other components, as long as they can achieve the heating of the low-temperature gas.

[0034] Furthermore, the second partition 15 can be configured as an inverted cone shape to further facilitate the collection and flow of heating gas into the gas pipeline 50.

[0035] Furthermore, the control cabinet 10 and its internal devices can be placed inside a cold storage room, allowing the air inlet 12 and outlet 13 to be directly connected to the cold storage room without the need for additional piping. The control cabinet 10 can be fully enclosed to protect its internal components. An air inlet 12 and outlet 13 are provided on the side wall. The outlet 13 can be configured as multiple air vents, some connected to the gas pipeline 50 and others to the second chamber. The outlet 13 allows air to be discharged while maintaining stable air pressure in the second chamber 112. To allow the atomized gas from the humidifier 40 to enter the cold storage room, a humidification port connected to the atomization outlet 41 of the humidifier 40 is provided on the side wall. This type of control cabinet 10 is constructed entirely of heat-insulating material to prevent temperature interference with the cold storage room. Additionally, the control cabinet 10 can also be configured with one open side, such as... Figure 1 As shown, the heating chamber 1111 is set as an independent chamber within the first chamber 111, and the atomizing outlet 41 of the humidification device 40 faces the open side. This type of control cabinet 10 is mainly suitable for cold storage temperatures above zero, avoiding the freezing of condensate caused by the open opening. In this structure, at least the chamber of the heating chamber 1111 and the gas pipeline 50 are made of heat-insulating material to avoid mutual influence with the temperature inside the cold storage. The specific configuration of the control cabinet 10 can be determined according to actual needs.

[0036] In the optional embodiment, more preferably, the condensing section 51 includes a first inclined section 511 and a second inclined section 512 fixedly connected along the gas conveying direction. The longitudinal section of the condensing section 51 is a V-shaped opening with the opening facing upwards, which facilitates the collection of condensate. A condensing device 30 is provided in both the first inclined section 511 and / or the second inclined section 512. Specifically, a condensing device 30 is provided in both the first inclined section 511 and the second inclined section 512 to further improve the dehumidification effect. A water outlet 513 is provided at the lower part of the connection end of the first inclined section 511 and the second inclined section 512 to facilitate the outflow of condensate. Below the water outlet 513, there is a water collection tank 60 fixedly installed in the second cavity 112. The humidifying device 40 is located below the water collection tank 60. The water collection tank 60 is used to collect condensate and is connected to the humidifying device 40 through the water outlet pipe 61. The water collection tank 60 can collect condensate and allow the condensate to flow into the humidifying device 40 through the water outlet pipe 61 under the action of gravity.

[0037] Specifically, the condensing device 30 can be provided as a plurality of condensing pieces, which are fixed side by side in the condensing section 51, and condense the heated gas while the heated gas passes through. In addition, after the dehumidification is completed, the temperature of the condensing pieces is increased. In order to cool the condensing pieces, the heating device 20 can be closed, and then the low-temperature gas in the cold storage is introduced into the control cabinet 10 to circulate and cool the condensing pieces, so as to dehumidify next time. Alternatively, the temperature of the condensing device 30 itself can be directly controlled by the central control component to achieve the dehumidification and condensation requirement. In addition, the condensing device 30 can also be provided with other structures, as long as it can condense the heated gas while the heated gas passes through.

[0038] In an optional solution of the embodiment, preferably, the humidity control device 1 provided by the embodiment further comprises a refrigeration device 70, which is used to refrigerate the dry gas. The refrigeration device 70 is located in the gas pipeline 50, and is located behind the condensing device 30 along the gas conveying direction. The refrigeration device 70 is used to further cool the dry gas, so as to avoid that the temperature of the dry gas has a great influence on the temperature of the cold storage.

[0039] Specifically, the refrigeration device 70 can be provided as a semiconductor refrigeration piece. In addition, the refrigeration device 70 can also be provided with other structures, as long as it can cool the dry gas while the dry gas passes through.

[0040] In an optional solution of the embodiment, preferably, the humidity control device 1 provided by the embodiment further comprises an air suction device 80 provided at the air inlet 12, which is used to suck the low-temperature gas in the cold cavity into the containing cavity 11. The air suction device 80 is used to realize the circulation of the gas, and can stir the low-temperature gas to make the low-temperature gas heated uniformly in the heating cavity 1111.

[0041] Specifically, the air suction device 80 is provided as a CPU fan.

[0042] In an optional solution of the embodiment, preferably, the humidity control device 1 provided by the embodiment further comprises a humidity monitoring component and a central control component. The humidity monitoring component is arranged in the cold cavity and is configured to send a humidity signal. The central control component is in communication connection with the humidity monitoring component, the heating device 20, the condensing device 30, the humidifying device 40, the refrigerating device 70 and the air suction device 80. The central control component is configured to receive the humidity signal and control the operation of the heating device 20, the condensing device 30, the humidifying device 40, the refrigerating device 70 and the air suction device 80. The humidity in the cold storage is monitored by the humidity monitoring component. If the humidity exceeds the specified humidity, the dehumidification mode is started. The central control component controls the operation of the air suction device 80, the condensing device 30 and the refrigerating device 70, and closes the humidifying device 40, so as to realize dehumidification of the cold storage. If the humidity is lower than the specified humidity, the central control component controls the operation of the humidifying device 40, and closes the air suction device 80, the condensing device 30 and the refrigerating device 70, so as to humidify the cold storage.

[0043] Further, a temperature monitoring component can be arranged in the heating cavity 1111. The temperature monitoring component is configured to monitor the temperature of the heated gas. The temperature monitoring component is in communication connection with the central control component, so as to automatically control the heating power of the heating device 20.

[0044] Specifically, the humidity monitoring component can be a humidity sensor, and the temperature monitoring component can be a temperature sensor.

[0045] In an optional solution of the embodiment, preferably, the humidity control device 1 provided by the embodiment further comprises a water storage device. The water storage device is configured to store standby water. The water storage device is in communication with the water inlet of the humidifying device 40 through a water pump. When the condensate water is insufficient to meet the water demand of the humidifying device 40, the water pump supplies water to the humidifying device 40. Specifically, the water storage device and the water pump can be located in the control cabinet 10 or arranged outside the control cabinet 10. The water pump can be in communication connection with the central control component. The central control component controls the operation of the water pump according to the water level of the humidifying device 40.

[0046] Embodiment Two

[0047] The embodiment provides a cold storage, which comprises a cold cavity and the humidity control device 1 provided by the embodiment. The air inlet 12 and the air outlet 13 of the humidity control device 1 are connected with the cold cavity. The low-temperature gas in the cold cavity continuously enters the control cabinet 10. The heating device 20 heats and warms the low-temperature gas entering the containing cavity 11 to form heated gas. The steam in the heated gas forms condensate water under the cooling and condensing action of the condensing device 30, so that the heated gas becomes dry gas. The dry gas reenters the cold storage through the air outlet 13, so as to continuously circulate and complete the dehumidification of the cold storage. The heating device 20 heats and warms the low-temperature gas entering the containing cavity 11 to form heated gas, which increases the temperature difference between the steam and the condensing device 30, facilitates the condensation of more condensate water, and thus improves the dehumidification effect.

[0048] The principles and implementations of the present application are described in the specific examples. The above examples are only used to help understand the method of the present application and its core idea. Meanwhile, for those skilled in the art, according to the idea of the present application, the specific implementation and application range will be changed. In summary, the content of the specification should not be understood as a limitation of the present application.

Claims

1. A humidity control device, characterized by: The utility model relates to a control cabinet (10) has the accommodation cavity (11) in the control cabinet (10), the accommodation cavity (11) has the first baffle (14) in, the first baffle (14) divides the accommodation cavity (11) into first cavity (111) and second cavity (112), the first baffle (14) upper portion is provided with the first through -hole (141) of the communication first cavity (111) and second cavity (112), first cavity (111) is provided with the second baffle (15) in, the second baffle (15) is set as inverted cone, the second baffle (15) divides first cavity (111) from below and upwards into heating chamber (1111) and communication chamber (1112), the sidewall of heating chamber (1111) is provided with the air inlet (12) for the communication accommodation cavity (11) and cold chamber, the sidewall of second cavity (112) is provided with the air outlet (13) for the communication accommodation cavity (11) and cold chamber, the second baffle (15) is provided with the second through -hole (151), the second through -hole (151) with one end of gas pipeline (50) is communicated, the other end of gas pipeline (50) passes through the first through -hole (141) and is connected with the air outlet (13) and is communicated, the gas pipeline (50) includes the condensation section (51) in second cavity (112), the condensation section (51) includes the first inclined section (511) and the second inclined section (512) of fixed connection along gas delivery direction, the longitudinal section of condensation section (51) is the V type of opening upwards, the lower part of the connecting end of first inclined section (511) and the second inclined section (512) is provided with the water outlet (513) for the condensed water outflow, Heating device (20) is arranged in the heating chamber (1111), and the heating device (20) is used for heating the low-temperature gas of the cold chamber into the heating chamber (1111) through the air inlet (12) to form heated gas, and the heated gas is used for entering the gas pipeline (50) through the first through -hole (141), and Condensing device (30) is arranged in the condensation section (51), and the condensing device (30) is used for cooling and condensing the heated gas to form condensed water in the heated gas and to form dry gas in the heated gas, and the dry gas can be discharged into the cold chamber through the air outlet (13), Refrigeration device (70) is used for refrigerating the dry gas, and the refrigeration device (70) is located in the gas pipeline (50), and the refrigeration device (70) is located behind the condensing device (30) along the gas delivery direction. It also includes humidifying device (40), and the humidifying device (40) is arranged in the accommodation cavity (11), the water inlet of the humidifying device (40) can be connected to the condensed water, and the humidifying device (40) can atomize the condensed water and discharge into the cold chamber through the atomizing outlet (41).

2. The humidity control device of claim 1, wherein: ​ 3. The humidity control device of claim 2, wherein: The humidifying device (40) is arranged in the second cavity (112).

4. The humidity control device of claim 3, wherein: The humidifying device (40) is arranged below the condensing section (51) and is in communication with the water outlet (513) to enable the condensed water to enter the humidifying device (40).

5. The humidity control device of claim 4, wherein: The first inclined section (511) and / or the second inclined section (512) are provided with the condensing device (30); and the water outlet (513) is provided below with a water collecting tank (60) fixedly arranged in the second cavity (112), the humidifying device (40) is arranged below the water collecting tank (60), the water collecting tank (60) is used for collecting the condensed water and is in communication with the humidifying device (40) through a water outlet pipeline (61).

6. The humidity control device of claim 4, wherein: The air suction device (80) is arranged at the air inlet (12) and is used for sucking the low-temperature gas in the cold cavity into the accommodating cavity (11).

7. The humidity control device of claim 6, wherein: The humidity monitoring component is arranged in the cold cavity and sends a humidity signal, and the central control component is in communication connection with the humidity monitoring component, the heating device (20), the condensing device (30), the humidifying device (40), the refrigerating device (70) and the air suction device (80), receives the humidity signal, and controls the actions of the heating device (20), the condensing device (30), the humidifying device (40), the refrigerating device (70) and the air suction device (80).

8. The humidity control device of claim 2, wherein: The water storage device is used for storing standby water and is in communication with the water inlet of the humidifying device (40) through a water pump.

9. A cold store, characterised in that: The humidity control device (1) of any one of claims 1-8 is arranged in the cold cavity, and the air inlet (12) and the air outlet (13) of the humidity control device (1) are in communication with the cold cavity.

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