CN218955292U - Dew-proof heating control device and refrigerator - Google Patents

Abstract

The present disclosure relates to a condensation prevention heating control device and a refrigerator, the condensation prevention heating control device including: a control module and a sensor module; the control module comprises a master controller and a solid-state relay, the master controller is electrically connected with the solid-state relay, and the solid-state relay is electrically connected with the heating device; the sensor module comprises a temperature sensor and a temperature and humidity sensor, and the temperature sensor and the temperature and humidity sensor are electrically connected with the main controller; the temperature sensor is used for collecting the cabinet door temperature of the refrigerator, the temperature and humidity sensor is used for collecting the environment temperature and humidity, and the main controller is used for controlling the duty ratio of the energizing time of the solid-state relay based on the environment temperature and humidity and the cabinet door temperature. The solid-state relay has no mechanical contact part and no service life of the contact part, and can be repeatedly switched on and off in a very short time, so that the heating power of the heating device can be controlled more sensitively and efficiently, and the energy consumption loss is reduced.

Description

Dew-proof heating control device and refrigerator

Technical Field

The disclosure relates to the technical field of dewing prevention of a refrigerator, in particular to a dewing prevention heating control device and a refrigerator.

Background

The outer surface of the cabinet door glass of the refrigerator is easy to form condensation, so that the permeation effect is affected, and an electric heater is generally adopted to heat the glass, so that the temperature of the cabinet door glass is higher than the dew point temperature, and the condensation is prevented. In the related art, a mechanical relay (Mechanical State Relay, MSR) is adopted for the anti-condensation heating controller to control the heater, and the mechanical relay is attracted by a contact, so that the attraction times are generally about 10 ten thousand times, and the electric life exists; and the mechanical relay can only control the on-off of the output passage, the sensitivity is lower, and the energy loss is large.

Disclosure of Invention

In order to solve the technical problem, the present disclosure provides an anti-condensation heating control device and a refrigerator.

In a first aspect, the present disclosure provides an anti-condensation heating control device applied to a refrigerator, the anti-condensation heating control device comprising: a control module and a sensor module;

the control module comprises a master controller and a solid-state relay, wherein the master controller is electrically connected with the solid-state relay, and the solid-state relay is electrically connected with the heating device;

the sensor module comprises a temperature sensor and a temperature and humidity sensor, and the temperature sensor and the temperature and humidity sensor are electrically connected with the main controller;

the temperature sensor is used for collecting the temperature of a cabinet door of the refrigerator, the temperature and humidity sensor is used for collecting the ambient temperature and humidity, and the main controller is used for controlling the duty ratio of the energizing time of the solid-state relay based on the ambient temperature and humidity and the temperature of the cabinet door.

Optionally, the condensation-preventing heating control device further includes: the plug-in connector comprises a first connecting port and a second connecting port;

the first connecting port is electrically connected with the sensor module, the second connecting port is electrically connected with the main controller, and the first connecting port and the second connecting port are connected in an air inserting mode.

Optionally, the sensor module further comprises: a sensor mount;

the sensor mount is for securing the temperature sensor.

Optionally, the condensation-preventing heating control device further includes: a potentiometer; the potentiometer is electrically connected with the main controller and is used for setting a compensation value of the temperature of the cabinet door.

Optionally, the control module further comprises: a power module; the power module is connected with the main controller, the solid-state relay and the sensor module and is used for converting external power supply voltage into working voltage required by the main controller, the solid-state relay and the sensor module.

Optionally, the condensation-preventing heating control device further includes: a status indication module; the state indicating module is electrically connected with the main controller and is used for indicating the power supply state of the power supply module, the working state of the sensor module and the heating state of the heating device.

Optionally, the potentiometer and/or the status indication module are integrally arranged on the temperature and humidity sensor.

Optionally, the solid state relay includes first input, second input, third input and output, first input with the master controller electricity is connected, the second input with power module electricity is connected, the third input is connected with external power supply electricity, the output is connected with heating device electricity.

In a second aspect, the present disclosure also provides a refrigerator comprising: the heating device is arranged on the door glass of the refrigerator; and any one of the above dew condensation prevention heating control devices, wherein the dew condensation prevention heating control device is electrically connected with the heating device.

Optionally, the refrigerator further includes: a door frame arranged around the cabinet door glass and a decorative cover positioned at the top of the refrigerator;

the control module is arranged in the decorative cover, the temperature and humidity sensor is arranged on the outer surface of the decorative cover, and the temperature sensor is arranged at least one of the cabinet door glass and the door frame.

Compared with the prior art, the technical scheme provided by the disclosure has the following advantages:

the present disclosure provides a dew condensation prevention heating control device and freezer, this dew condensation prevention heating control device includes: a control module and a sensor module; the control module comprises a master controller and a solid-state relay, the master controller is electrically connected with the solid-state relay, and the solid-state relay is electrically connected with the heating device; the sensor module comprises a temperature sensor and a temperature and humidity sensor, and the temperature sensor and the temperature and humidity sensor are electrically connected with the main controller; the temperature sensor is used for collecting the cabinet door temperature of the refrigerator, the temperature and humidity sensor is used for collecting the environment temperature and humidity, and the main controller is used for controlling the duty ratio of the energizing time of the solid-state relay based on the environment temperature and humidity and the cabinet door temperature. The solid-state relay has no mechanical contact part and no service life of the contact part, and can be repeatedly switched on and off in a very short time, so that the heating power of the heating device can be controlled more sensitively and efficiently, and the energy consumption loss is reduced.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the disclosure and together with the description, serve to explain the principles of the disclosure.

In order to more clearly illustrate the embodiments of the present disclosure or the solutions in the prior art, the drawings that are required for the description of the embodiments or the prior art will be briefly described below, and it will be obvious to those skilled in the art that other drawings can be obtained from these drawings without inventive effort.

Fig. 1 is a schematic structural diagram of an anti-condensation heating control device according to an embodiment of the present disclosure;

fig. 2 is a schematic structural view of another anti-condensation heating control device according to an embodiment of the present disclosure;

fig. 3 is a schematic structural diagram of a refrigerator according to an embodiment of the present disclosure.

Wherein, 10, the anti-dewing heating control device; 11. a control module; 111. a master controller; 112. a solid state relay; 113. a power module; 114. externally connecting a power line; 115. a connecting wire; 121. a temperature and humidity sensor; 122. a temperature sensor; 123. a sensor mount; 13. an opposite-plug connector; 131. a first connection port; 132. a second connection port; 14. a potentiometer; 15. a status indication module; 20. a cabinet door glass; 30. a heating device; 40. a door frame; 50. and (5) a decorative cover.

Detailed Description

In order that the above objects, features and advantages of the present disclosure may be more clearly understood, a further description of aspects of the present disclosure will be provided below. It should be noted that, without conflict, the embodiments of the present disclosure and features in the embodiments may be combined with each other.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present disclosure, but the present disclosure may be practiced otherwise than as described herein; it will be apparent that the embodiments in the specification are only some, but not all, embodiments of the disclosure.

In order to solve the problems of the background art section, embodiments of the present disclosure provide an anti-condensation heating control device and a refrigerator, the anti-condensation heating control device including: a control module and a sensor module; the control module comprises a master controller and a solid-state relay, the master controller is electrically connected with the solid-state relay, and the solid-state relay is electrically connected with the heating device; the sensor module comprises a temperature sensor and a temperature and humidity sensor, and the temperature sensor and the temperature and humidity sensor are electrically connected with the main controller; the temperature sensor is used for collecting the cabinet door temperature of the refrigerator, the temperature and humidity sensor is used for collecting the environment temperature and humidity, and the main controller is used for controlling the duty ratio of the energizing time of the solid-state relay based on the environment temperature and humidity and the cabinet door temperature. The solid-state relay has no mechanical contact part and no service life of the contact part, and can be repeatedly switched on and off in a very short time, so that the heating power of the heating device can be controlled more sensitively and efficiently, and the energy consumption loss is reduced.

Referring to fig. 1 to 3, an anti-condensation heating control device and a refrigerator provided in an embodiment of the present disclosure are exemplarily described.

The embodiment of the disclosure provides an anti-condensation heating control device which is applied to a refrigerator. As shown in fig. 1 to 2, the dew condensation prevention heating control apparatus 10 includes: a control module 11 and a sensor module; the control module 11 comprises a master controller 111 and a solid-state relay 112, wherein the master controller 111 is electrically connected with the solid-state relay 112, and the solid-state relay 112 is electrically connected with the heating device 30; the sensor module comprises a temperature sensor 122 and a temperature and humidity sensor 121, and the temperature sensor 122 and the temperature and humidity sensor 121 are electrically connected with the main controller 111; the temperature sensor 122 is used for collecting the temperature of a cabinet door of the refrigerator, the temperature and humidity sensor 121 is used for collecting the ambient temperature and humidity, and the main controller 111 is used for controlling the duty ratio of the energizing time of the solid state relay 112 based on the ambient temperature and humidity and the temperature of the cabinet door.

The main controller 111 includes a processor with data processing capability and a memory with a storage function, where the processor can run a computer program or an instruction stored in the memory, determine a dew point temperature according to the collected ambient temperature and humidity, compare the collected cabinet door temperature with the dew point temperature, and determine a duty ratio of the energizing time of the solid state relay 112 according to a difference value between the cabinet door temperature and the dew point temperature, that is, a proportion of the energizing time of the solid state relay 112 occupies a preset duration; for example, if the solid state relay 112 is energized for 36 seconds per minute, the duty cycle of the solid state relay 112 is 60% for the energized time. When the solid relay 112 is electrified, the heating device is powered on and heats the cabinet door glass; when the solid relay 112 is powered off, the heating device cuts off the power supply to stop heating the cabinet door glass; the main controller 111 adjusts the heating power of the heating device by adjusting the on-time duty ratio of the solid state relay 112; because the solid state relay 112 can be repeatedly switched in a very short time, the duty ratio of the power-on time can be quickly adjusted, the heating power of the heating device 30 can be controlled more sensitively and efficiently, the heating device is prevented from running at higher heating power all the time, the service life of the heating device 30 is prolonged, and the electric energy consumption and the running cost are reduced.

When the temperature of the cabinet door is lower than the dew point temperature, dew condensation is generated on the refrigerator door 20, and in order to prevent the dew condensation of the cabinet door 20, the heating device 30 needs to be started to heat the glass of the cabinet door; considering the acquisition error of the sensor, when the temperature of the cabinet door is lower than the dew point temperature and the temperature difference of the cabinet door and the cabinet door is greater than the preset temperature difference, the heating device is controlled to heat the glass; the preset temperature difference may be set to 1 ℃ by way of example. The larger the temperature difference between the cabinet door temperature and the dew point temperature is, the higher the heating power of the heating device 30 is, namely, the larger the duty ratio of the on time of the solid state relay 112 is; and presetting an association relation between the temperature difference and the duty ratio of the energizing time of the solid-state relay 112, and determining the corresponding duty ratio of the energizing time of the solid-state relay 112 according to the temperature difference between the cabinet door temperature and the dew point temperature when the cabinet door temperature is lower than the dew point temperature.

The embodiment of the disclosure provides an anti-condensation heating control device, which comprises: a control module 11 and a sensor module; the control module 11 comprises a master controller 111 and a solid-state relay 112, wherein the master controller 111 is electrically connected with the solid-state relay 112, and the solid-state relay 112 is electrically connected with the heating device 30; the sensor module comprises a temperature sensor 122 and a temperature and humidity sensor 121, and the temperature sensor 122 and the temperature and humidity sensor 121 are electrically connected with the main controller 111; the temperature sensor 122 is used for collecting the temperature of a cabinet door of the refrigerator, the temperature and humidity sensor 121 is used for collecting the ambient temperature and humidity, and the main controller 111 is used for controlling the duty ratio of the energizing time of the solid state relay 112 based on the ambient temperature and humidity and the temperature of the cabinet door. By the arrangement, no mechanical contact part exists in the solid-state relay 112, the service life of the contact part is not guaranteed, and the solid-state relay 112 can be repeatedly switched on and off in a very short time, so that the heating power of the heating device 30 can be controlled more sensitively and efficiently, and the energy consumption loss is reduced.

In some embodiments, as shown in fig. 2, the condensation-preventing heating control apparatus 10 further comprises: an opposite-plug connector including a first connection port 131 and a second connection port 132; the first connection port 131 is electrically connected to the sensor module, the second connection port 132 is electrically connected to the main controller 111, and the first connection port 131 and the second connection port 132 are connected to each other by air.

Wherein the opposite-plug connector comprises at least one of a circular connector, a rectangular connector and a ribbon flat cable connector. The number of the connectors to be inserted can be flexibly set according to the requirement of the anti-condensation heating control device 10, for example, the number of the connectors to be inserted is equal to the number of the sensors, namely, the connectors to be inserted are in one-to-one correspondence with the sensors; alternatively, as shown in fig. 2, one sensor corresponds to one opposite connector, and the anti-condensation heating control device 10 includes two opposite connectors, wherein a first connection port 131 of one opposite connector is electrically connected to the temperature and humidity sensor 121, a first connection port 131 of the other opposite connector is electrically connected to the temperature sensor 122, and second connection ports 132 of the two opposite connectors are both electrically connected to the main controller 111.

So set up, the sensor (temperature and humidity sensor 121 and temperature sensor 122) contacts well with master controller 111, simple to operate, and easy change when the sensor breaks down.

In some embodiments, as shown in fig. 2, the sensor module further comprises: a sensor mount 123; the sensor mount 123 is used to secure the temperature sensor 122.

The sensor mounting 123 is used for fixing the temperature sensor 122 on the door glass and/or the door frame of the refrigerator, so as to ensure good contact with the surface of the door glass and/or the door frame of the refrigerator. The fixing manner of the sensor mounting member 123 may be any fixing manner known to those skilled in the art, for example, as shown in fig. 2, the sensor mounting member 123 is configured in a square plate shape, and is provided with a screw fixing hole, and the temperature sensor 122 is fixed on the door glass and/or the door frame of the refrigerator by a screw; alternatively, the sensor mount 123 is attached to the door glass or the door frame by double-sided tape, which is not limited herein.

In some embodiments, as shown in fig. 2, the condensation-preventing heating control apparatus 10 further comprises: a potentiometer 14; the potentiometer 14 is electrically connected with the main controller 111 and is used for setting the compensation value of the cabinet door temperature.

The temperature sensor 122 is limited in number, an error exists in the acquisition result, the acquired cabinet door temperature is not necessarily the real temperature of the cabinet door, if the duty ratio of the energizing time of the solid relay is regulated and controlled only by taking the cabinet door temperature acquired by the temperature sensor as a basis, the condensation phenomenon still exists in a part of the area of the cabinet door glass, and aiming at the problem, the anti-condensation heating control device 10 is provided with the potentiometer 14 to compensate the cabinet door temperature acquired by the temperature sensor 122, and the compensation temperature is increased when the temperature difference between the cabinet door temperature and the dew point temperature is calculated, so that the condensation phenomenon can not occur on the cabinet door glass. The setting range of the compensation temperature is 0-8 ℃, the compensation temperature can be set by a user according to actual conditions, when dew condensation occurs on the cabinet door glass, the actual temperature of the cabinet door glass is lower than the acquisition temperature, and the setting value (namely the compensation temperature) is increased on the basis of the original setting value of the potentiometer.

The potentiometer 14 may be provided as one of a knob type potentiometer and a slide bar type potentiometer, or as all types of potentiometers known to those skilled in the art, and is not limited herein.

In some embodiments, as shown in fig. 2, the control module 11 further includes: a power supply module 113; the power module 113 is connected with the main controller 111, the solid state relay 112 and the sensor module, and is used for converting the external power voltage into working voltages required by the main controller 111, the solid state relay 112 and the sensor module.

The external power supply includes a utility power grid or a self-generating device, the voltage of the external power supply is generally higher, and the working voltages of the main controller 111, the solid state relay 112 and the sensor module are lower, for example, 5V, and the voltage of the external power supply is converted into low voltage after being processed by the power module 113, so as to meet the voltage required by the working of the main controller 111, the solid state relay 112 and the sensor module.

In some embodiments, as shown in fig. 2, the condensation-preventing heating control apparatus 10 further comprises: a status indication module 15; the status indication module 15 is electrically connected to the main controller 111, and is used for indicating the power supply status of the power supply module 113, the working status of the sensor module, and the heating status of the heating device 30.

Wherein the status indication module 15 is configured as a light emitting diode (Light Emitting Diode, LED) indicator light. Illustratively, as shown in FIG. 2, the status indication module 15 includes three differently colored LED indicators, wherein

Green, +.is red, ≡is yellow; the green LED indicator is used for indicating the power supply state of the power module 113, and when the LED indicator is turned on, the power module 113 is indicated to work normallyWhen the LED indicator lights are extinguished, the power supply module 113 is abnormal in operation and needs to be powered off for maintenance; the red LED indicator light is used for indicating the heating state of the heating device 30, when the LED indicator light is on, the heating device 30 is heated, and when the LED indicator light is off, the heating device 30 is stopped; the heating state of the heating device 30 is related to the energized and de-energized states of the solid state relay 112, when the solid state relay 112 is in the energized state, the heating device 30 is heating, and when the solid state relay 112 is in the de-energized state, the heating device 30 stops working; the yellow LED indicator is used for indicating the working state of the temperature and humidity sensor 121 and/or the temperature sensor 122, when the LED indicator is on, the working abnormality of the temperature and humidity sensor 121 and/or the temperature sensor 122 is indicated, and when the LED indicator is off, the working abnormality of the temperature and humidity sensor 121 and/or the temperature sensor 122 is indicated.

It should be noted that, fig. 2 only exemplarily illustrates that the status indication module 15 includes three LED indicator lamps, and the three indicator lamps are respectively green, red, and yellow, but the condensation-preventing heating control device provided by the embodiment of the present disclosure is not limited. In other embodiments, the number of the LED indicator lamps may be one, two, four or more, and colors other than green, red and yellow may be provided, which is not limited herein.

In some embodiments, as shown in fig. 2, the potentiometer 14 and/or the status indication module 15 are integrally disposed on the temperature and humidity sensor 121.

As shown in fig. 2, three LED indicator lamps in the potentiometer 14 and the status indication module 15 are integrally disposed on the temperature and humidity sensor 121, so that the temperature and humidity sensor 121, the potentiometer 14 and the status indication module 15 only need to be provided with one mounting hole on the refrigerator door frame, which reduces the number of mounting holes and is beneficial to simplifying the mounting operation.

The potentiometer 14 and the status indication module 15 are integrally disposed on the temperature and humidity sensor 121, and the potentiometer 14 and the status indication module 15 are electrically connected to the main controller 111 through the first connection port 131 and the second connection port 132, which are connected in an air-to-air manner.

In some embodiments, as shown in fig. 2, the solid state relay 112 includes a first input terminal electrically connected to the master controller 111, a second input terminal electrically connected to the power module 113, a third input terminal electrically connected to an external power source, and an output terminal electrically connected to the heating device 30.

Illustratively, as shown in fig. 2, the solid-state relay 112 includes three input terminals and one output terminal, wherein a first input terminal of the voltage regulating module 13 is connected to the master controller 111, and is configured to receive a control instruction sent by the master controller 111; the second input end of the solid state relay 112 is connected with the power module 113, and is used for receiving the working voltage provided by the power module 113 so as to maintain the operation of the solid state relay 112; the third input end of the solid state relay 112 is connected with the live wire L, the output end is connected with the heating device 30, the heating device 30 is also connected with the zero line N, and the heating power of the heating device is adjusted by controlling the duty ratio of the energizing time of the solid state relay 112.

On the basis of the implementation mode, the embodiment of the disclosure also provides a refrigerator. As shown in fig. 3, the refrigerator includes: the heating device is arranged on the cabinet door glass 20 of the refrigerator; and any one of the above-mentioned anti-condensation heating control devices, the anti-condensation heating control device is electrically connected with the heating device; has the corresponding beneficial effects, and is not repeated here for avoiding repeated description.

Wherein the heating device 30 (not shown in fig. 3) includes at least one of an electrothermal film, an electrothermal wire, and a heating electrode.

It should be noted that, in fig. 3, the right side of the control module 11 includes three connection lines, two of which are external power lines 114, such as a live line and a neutral line of the utility power grid; the other is a connection line 115 between the solid state relay and the heating device, and since the heating device is not shown in fig. 3, the other end of the connection line 115 is not connected to a component.

In some embodiments, as shown in fig. 3, the refrigerator further comprises: a door frame 40 arranged around the cabinet door glass 20 and a decorative cover 50 positioned on the top of the refrigerator; the control module 11 is disposed in the decoration cover 50, the temperature and humidity sensor 121 is disposed on the outer surface of the decoration cover 50, and the temperature sensor 122 is disposed on at least one of the door glass 20 and the door frame 40.

Wherein, set up control module 11 in the decorative cover 50 at freezer top, on the one hand do not occupy the outer space of freezer, do not influence the pleasing to the eye of freezer, on the other hand control module 11 not with environment direct contact, not fragile. A mounting hole of a temperature and humidity sensor 121 is reserved on a decorative cover 40 at the top of the refrigerator, and a probe of the temperature and humidity sensor 121 passes through the mounting hole and is fixed on the outer surface of the decorative cover 50; the potentiometer 14 and the status indication module 15 are integrally arranged on the temperature and humidity sensor 121, so that only one mounting hole is required to be formed in the decorative cover at the top of the refrigerator, the number of the mounting holes is reduced, and the assembly process is simplified.

Illustratively, as shown in fig. 3, the anti-condensation heating control device includes two temperature sensors 122 respectively fixed at the edge of the cabinet door glass 20 and the position of the door frame adjacent to the cabinet door glass 20, so that the temperature sensors 122 do not obstruct the view of the user, and the whole refrigerator is more beautiful. In other embodiments, the temperature sensor 122 may be fixed in a central area of the cabinet door glass 20, or a plurality of temperature sensors 122 may be fixed on the cabinet door glass 20 in a manner of symmetrical or even distribution in fixed positions, so that the detection result of the temperature sensor 122 is closer to the average temperature of the cabinet door glass, and accurate control of the heating device is achieved.

In other embodiments, the mounting holes can be formed on the decorative cover 50 at the top of the refrigerator for the potentiometer and the status indication module, so that the potentiometer and the status indication module are exposed on the outer surface of the decorative cover 50, and the temperature compensation value of the refrigerator door and the status of the LED indication lamp can be conveniently set.

It should be noted that in this document, relational terms such as "first" and "second" and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.

The foregoing is merely a specific embodiment of the disclosure to enable one skilled in the art to understand or practice the disclosure. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the disclosure. Thus, the present disclosure is not intended to be limited to the embodiments shown and described herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (10)

1. The utility model provides a dew prevention heating control device, is applied to freezer, its characterized in that includes: a control module and a sensor module;

the control module comprises a master controller and a solid-state relay, wherein the master controller is electrically connected with the solid-state relay, and the solid-state relay is electrically connected with the heating device;

the sensor module comprises a temperature sensor and a temperature and humidity sensor, and the temperature sensor and the temperature and humidity sensor are electrically connected with the main controller;

the temperature sensor is used for collecting the temperature of a cabinet door of the refrigerator, the temperature and humidity sensor is used for collecting the ambient temperature and humidity, and the main controller is used for controlling the duty ratio of the energizing time of the solid-state relay based on the ambient temperature and humidity and the temperature of the cabinet door.

2. The dewing prevention heating control device of claim 1, further comprising: the plug-in connector comprises a first connecting port and a second connecting port;

the first connecting port is electrically connected with the sensor module, the second connecting port is electrically connected with the main controller, and the first connecting port and the second connecting port are connected in an air inserting mode.

3. The dewing prevention heating control device of claim 1, wherein said sensor module further comprises: a sensor mount;

the sensor mount is for securing the temperature sensor.

4. The dewing prevention heating control device of claim 1, further comprising: a potentiometer; the potentiometer is electrically connected with the main controller and is used for setting a compensation value of the temperature of the cabinet door.

5. The anti-condensation heating control apparatus according to claim 4, wherein the control module further comprises: a power module; the power module is connected with the main controller, the solid-state relay and the sensor module and is used for converting external power supply voltage into working voltage required by the main controller, the solid-state relay and the sensor module.

6. The dewing prevention heating control device of claim 5, further comprising: a status indication module; the state indicating module is electrically connected with the main controller and is used for indicating the power supply state of the power supply module, the working state of the sensor module and the heating state of the heating device.

7. The anti-condensation heating control device according to claim 6, wherein the potentiometer and/or the status indication module are integrally provided on the temperature and humidity sensor.

8. The anti-condensation heating control device according to claim 5, wherein the solid state relay comprises a first input terminal, a second input terminal, a third input terminal and an output terminal, wherein the first input terminal is electrically connected with the main controller, the second input terminal is electrically connected with the power module, the third input terminal is electrically connected with an external power supply, and the output terminal is electrically connected with the heating device.

9. A refrigerator, comprising: the heating device is arranged on the door glass of the refrigerator; and the dew condensation prevention heating control device according to any one of claims 1 to 8, which is electrically connected to the heating device.

10. The cooler according to claim 9, further comprising: a door frame arranged around the cabinet door glass and a decorative cover positioned at the top of the refrigerator;

the control module is arranged in the decorative cover, the temperature and humidity sensor is arranged on the outer surface of the decorative cover, and the temperature sensor is arranged at least one of the cabinet door glass and the door frame.

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