Anti-condensation heating control device and refrigerator

Abstract

The utility model relates to an anti-condensation heating control device and a refrigerator. The anti-condensation heating control device comprises a control module and a condensation detection module. The control module comprises a comparator and a relay, the first output end of the comparator is electrically connected with the relay, and the relay is electrically connected with the heating device; the moisture condensation detection module comprises a first moisture condensation detection unit and a second moisture condensation detection unit, the first moisture condensation detection unit is electrically connected with the first input end of the comparator, and the second moisture condensation detection unit is electrically connected with the second input end of the comparator; the first condensation detection unit is used for detecting the surface humidity of cabinet door glass and outputting a first voltage to the comparator; the second condensation detection unit is used for detecting environment humidity and outputting a second voltage to the comparator; the comparator is used for controlling on or off of the relay. Through the arrangement, compared with a single chip microcomputer, the comparator has the advantages of being low in price and high in anti-interference performance, the requirements for the performance of a power supply, electromagnetic shielding and heat dissipation of the whole machine are lowered, and the cost of the whole machine is lowered.

Description

Technical Field

[0001] This application relates to the field of anti-condensation technology for freezers, and in particular to an anti-condensation heating control device and a freezer. Background Technology

[0002] The outer surface of cabinet door glass is prone to condensation, affecting transparency. Heating devices are typically used to heat the glass door, raising its surface temperature above the dew point to prevent condensation. Related technologies typically employ heating control devices including a controller (e.g., a microcontroller), temperature and humidity sensors, a temperature sensor, and relays. The temperature and humidity sensors collect ambient temperature and humidity data, while the temperature sensor collects the cabinet door glass temperature. The microcontroller calculates the dew point temperature based on the ambient temperature and humidity. When the glass door temperature approaches the dew point, the microcontroller controls the heating device to heat; when the glass door temperature exceeds the dew point, the microcontroller stops heating. However, the microcontroller, temperature and humidity sensors, and temperature sensor are susceptible to electromagnetic interference, placing specific requirements on power supply performance, electronic component selection, electromagnetic shielding, and overall heat dissipation, thus increasing the overall cost. Utility Model Content

[0003] To address the aforementioned technical problems, this application provides an anti-condensation heating control device and a freezer.

[0004] This application provides an anti-condensation heating control device, including: a control module and a condensation detection module;

[0005] The control module includes a comparator and a relay, the first output terminal of the comparator is electrically connected to the relay, and the relay is electrically connected to the heating device.

[0006] The condensation detection module includes a first condensation detection unit and a second condensation detection unit. The first condensation detection unit is electrically connected to the first input terminal of the comparator, and the second condensation detection unit is electrically connected to the second input terminal of the comparator.

[0007] The first condensation detection unit is used to detect the surface humidity of the cabinet door glass and output a first voltage to the comparator; the second condensation detection unit is used to detect the ambient humidity and output a second voltage to the comparator; the comparator is used to control the relay to turn on or off based on the first voltage and the second voltage.

[0008] Optionally, the first condensation detection unit includes a first condensation sensor, and the second condensation detection unit includes a second condensation sensor.

[0009] Optionally, the first condensation detection unit includes a first humidity-sensitive resistor and a first resistor connected in series, and the connection point of the first humidity-sensitive resistor and the first resistor is electrically connected to the first input terminal.

[0010] The second condensation detection unit includes a second humidity-sensitive resistor and a second resistor connected in series, and the connection point of the second humidity-sensitive resistor and the second resistor is electrically connected to the second input terminal.

[0011] Optionally, the control module further includes a power supply unit, which is electrically connected to the comparator and the relay respectively;

[0012] The power supply unit is used to convert the external power supply voltage into the operating voltage required by the comparator and the relay.

[0013] Optionally, the relay includes a third input terminal, a fourth input terminal, a fifth input terminal, and a second output terminal. The third input terminal is electrically connected to the comparator, the fourth input terminal is electrically connected to the power supply unit, the fifth input terminal is electrically connected to an external power supply, and the second output terminal is electrically connected to the heating device.

[0014] Optionally, the relay includes a solid-state relay.

[0015] Optionally, the anti-condensation heating control device further includes: a status indication module;

[0016] The status indication module is electrically connected to the comparator and is used to indicate the heating status of the heating device.

[0017] Optionally, the anti-condensation heating control device further includes: a first mating connector and a second mating connector;

[0018] The first mating connector includes a first connection port and a second connection port. The first connection port is electrically connected to the first condensation detection unit, and the second connection port is electrically connected to the first input terminal. The first connection port and the second connection port are connected in-air by mating.

[0019] The second mating connector includes a third connection port and a fourth connection port. The third connection port is electrically connected to the second condensation detection unit, and the fourth connection port is electrically connected to the second input terminal. The third connection port and the fourth connection port are connected in the air by mating.

[0020] This application also provides a freezer, including: a heating device and any of the above-mentioned anti-condensation heating control devices;

[0021] The heating device is installed on the glass door of the freezer, and the anti-condensation heating control device is electrically connected to the heating device.

[0022] Optionally, the control module is located at the top of the freezer, the condensation detection module is fixed at a first position on the cabinet door glass, and the second condensation detection unit is located on the side of the first condensation detection unit away from the cabinet door glass.

[0023] The distance between the first position and the edge of the cabinet door glass is less than a set distance.

[0024] The technical solution provided in this application has the following advantages compared with the prior art:

[0025] This application provides an anti-condensation heating control device, including: a control module and a condensation detection module; the control module includes a comparator and a relay, the first output terminal of the comparator is electrically connected to the relay, and the relay is electrically connected to the heating device; the condensation detection module includes a first condensation detection unit and a second condensation detection unit, the first condensation detection unit is electrically connected to the first input terminal of the comparator, and the second condensation detection unit is electrically connected to the second input terminal of the comparator; the first condensation detection unit is used to detect the surface humidity of the cabinet door glass and output a first voltage to the comparator; the second condensation detection unit is used to detect the ambient humidity and output a second voltage to the comparator; the comparator is used to control the relay to turn on or off based on the first voltage and the second voltage. With this configuration, compared with a microcontroller, the comparator has the advantages of low price and strong anti-interference performance, which reduces the requirements for power supply performance, electromagnetic shielding, and overall heat dissipation, and also reduces the overall cost of the device. Attached Figure Description

[0026] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application.

[0027] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0028] Figure 1 This is a schematic diagram of the structure of an anti-condensation heating control device provided in an embodiment of this application;

[0029] Figure 2 A schematic diagram of another anti-condensation heating control device provided in an embodiment of this application;

[0030] Figure 3 A schematic diagram of the structure of another anti-condensation heating control device provided in the embodiments of this application;

[0031] Figure 4A schematic diagram of the structure of another anti-condensation heating control device provided in the embodiments of this application;

[0032] Figure 5 This is a schematic diagram of the structure of a freezer provided in an embodiment of this application;

[0033] Figure 6 This is a schematic diagram of the condensation detection module fixed to the glass of the cabinet door according to an embodiment of this application. Detailed Implementation

[0034] To better understand the above-mentioned objectives, features, and advantages of this application, the solution of this application will be further described below. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0035] Many specific details are set forth in the following description in order to provide a full understanding of this application, but this application may also be implemented in other ways different from those described herein; obviously, the embodiments in the specification are only some embodiments of this application, and not all embodiments.

[0036] This application provides an anti-condensation heating control device, such as... Figure 1 As shown, the anti-condensation heating control device includes a control module 1 and a condensation detection module 2. The control module 1 includes a comparator 11 and a relay 12. The first output terminal of the comparator 11 is electrically connected to the relay, and the relay 12 is electrically connected to the heating device 3. The condensation detection module 2 includes a first condensation detection unit 21 and a second condensation detection unit 22. The first condensation detection unit 21 is electrically connected to the first input terminal of the comparator 11, and the second condensation detection unit 22 is electrically connected to the second input terminal of the comparator 11.

[0037] In this embodiment, the first condensation detection unit 21 is used to detect the surface humidity of the cabinet door glass and output a first voltage U1 to the comparator 11; the second condensation detection unit 22 is used to detect the ambient humidity and output a second voltage U2 to the comparator 11; the comparator 11 is used to control the relay 12 to be turned on or off based on the first voltage U1 and the second voltage U2, thereby turning the heating device 3 on or off. The heating device 3 is located on the cabinet door glass of the refrigerator. The heating device 3 includes at least one of an electric heating film, an electric heating wire, and a heating electrode.

[0038] When the surface humidity of the cabinet door glass exceeds the ambient humidity, condensation will form on the glass. At this time, the first voltage U1 output by the first condensation detection unit 21 and the second voltage U2 output by the second condensation detection unit 22 are not equal. The comparator 11 controls the relay 12 to turn on, thereby activating the heating device 3. The heating device 3 heats the cabinet door glass, effectively preventing condensation. When the surface humidity of the cabinet door glass does not exceed the ambient humidity, condensation will not form. Since the surface humidity of the cabinet door glass is close to the ambient humidity, the first voltage U1 output by the first condensation detection unit 21 and the second voltage U2 output by the second condensation detection unit 22 are approximately equal. The comparator 11 controls the relay 12 to turn off, thereby shutting off the heating device 3. The heating device 3 stops heating the cabinet door glass, reducing energy loss.

[0039] The anti-condensation heating control device provided in this application includes: a control module 1 and a condensation detection module 2; the control module 1 includes a comparator 11 and a relay 12, the first output terminal of the comparator 11 is electrically connected to the relay 12, and the relay 12 is electrically connected to the heating device 3; the condensation detection module 2 includes a first condensation detection unit 21 and a second condensation detection unit 22, the first condensation detection unit 21 is electrically connected to the first input terminal of the comparator 11, and the second condensation detection unit 22 is electrically connected to the second input terminal of the comparator 11; the first condensation detection unit 21 is used to detect the surface humidity of the cabinet door glass and output a first voltage U1 to the comparator 11; the second condensation detection unit 22 is used to detect the ambient humidity and output a second voltage U2 to the comparator 11; the comparator 11 is used to control the relay 12 to be turned on or off based on the first voltage U1 and the second voltage U2. With this configuration, compared with a microcontroller, the comparator 11 has the advantages of low price and strong anti-interference performance, which reduces the requirements for power supply performance, electromagnetic shielding, and overall heat dissipation, and also reduces the overall cost.

[0040] In some embodiments, such as Figure 2 As shown, the first condensation detection unit 21 includes a first condensation sensor 211, and the second condensation detection unit 22 includes a second condensation sensor 221.

[0041] In this application, the types of the first condensation sensor 211 and the second condensation sensor 221 are not limited, and include, but are not limited to, capacitive condensation sensors, resistive condensation sensors, and thermal conductivity condensation sensors. Compared with temperature sensors and temperature and humidity sensors in related technologies, condensation sensors have advantages such as small size, high sensitivity, and fast response speed, while also having the advantage of lower price.

[0042] In this embodiment, the ambient humidity is usually relatively stable, and the second voltage U2 output by the second condensation sensor 221 remains basically unchanged. Even if the ambient humidity changes, in addition to affecting the second voltage U2 output by the second condensation sensor 221, it will have the same effect on the first condensation sensor 211, thereby eliminating the influence of the change in ambient humidity on the output signal of the comparator 11.

[0043] When condensation occurs on the cabinet door glass, its surface humidity exceeds the ambient humidity, resulting in a large change in the first voltage U1. This causes the first voltage U1 to be unequal to the second voltage U2. Comparator 11 controls relay 12 to conduct, and the heating device 3 heats the cabinet door glass. When condensation does not occur on the cabinet door glass, its surface humidity is close to the ambient humidity, and the first voltage U1 and the second voltage U2 are approximately equal. Comparator 11 controls relay 12 to turn off, and the heating device 3 does not heat the cabinet door glass.

[0044] In some embodiments, such as Figure 3 As shown, the first condensation detection unit 21 includes a first humidity-sensitive resistor 212 and a first resistor 213 connected in series, and the connection point of the first humidity-sensitive resistor 212 and the first resistor 213 is electrically connected to the first input terminal of the comparator 11; the second condensation detection unit 22 includes a second humidity-sensitive resistor 222 and a second resistor 223 connected in series, and the connection point of the second humidity-sensitive resistor 222 and the second resistor 223 is electrically connected to the second input terminal of the comparator 11.

[0045] In this embodiment, the first condensation detection unit 21 is a first voltage divider circuit. The first humidity-sensitive resistor 212 and the first resistor 213, connected in series, are connected at one end to a power supply (e.g., a 5V power supply) and at the other end to ground. The connection point is electrically connected to the first input terminal of the comparator 11. The resistance value of the first humidity-sensitive resistor 212 changes with the surface humidity of the cabinet door glass, and the voltage at the connection point of the first humidity-sensitive resistor 212 and the first resistor 213 (i.e., the first voltage U1) also changes accordingly. The resistance value of the first humidity-sensitive resistor 212 is negatively correlated with the surface humidity of the cabinet door glass. For example, as... Figure 3 As shown, the higher the surface humidity of the door glass, the lower the resistance value of the first humidity-sensitive resistor 212, and the higher the corresponding first voltage U1.

[0046] The second condensation detection unit 22 is a second voltage divider circuit. The second humidity-sensitive resistor 222 and the second resistor 223, connected in series, are connected at one end to a power supply (e.g., 5V) and at the other end to ground. Their connection point is electrically connected to the second input terminal of the comparator 11. The resistance value of the first humidity-sensitive resistor 212 changes with ambient humidity. Normally, when the ambient humidity is relatively stable, the resistance value of the second humidity-sensitive resistor 222 remains essentially unchanged, and the output second voltage U2 also remains constant. Even if the ambient humidity changes, it only affects the resistance value of the second humidity-sensitive resistor 222, and has the same effect on the resistance value of the first humidity-sensitive resistor 212, thus eliminating the influence of ambient humidity changes on the output signal of the comparator 11.

[0047] For example, such as Figure 3 As shown, the first condensation detection unit 21 includes a first humidity-sensitive resistor 212 and a first resistor 213 connected in series. The connection point of the first humidity-sensitive resistor 212 and the first resistor 213 is electrically connected to the first input terminal of the comparator 11. The second condensation detection unit 22 includes a second humidity-sensitive resistor 222 and a second resistor 223 connected in series. The connection point of the second humidity-sensitive resistor 222 and the second resistor 223 is electrically connected to the second input terminal of the comparator 11. The first input terminal of the comparator 11 is an inverting input terminal, and the second input terminal is a positive input terminal. The power supply voltage is 5V, and the resistance values ​​of the first resistor and the second resistor are both 300kΩ. When the first voltage U1 is greater than the second voltage U2, it indicates that the surface humidity of the cabinet door glass exceeds the ambient humidity, and condensation appears on the cabinet door glass. The comparator 11 controls the relay 12 to conduct, thereby turning on the heating device 3, which heats the cabinet door glass. When the first voltage U1 is not greater than the second voltage U2, it indicates that the surface humidity of the cabinet door glass does not exceed the ambient humidity, and no condensation appears on the cabinet door glass (or the condensation has been eliminated). The comparator 11 controls the relay 12 to turn off, thereby turning off the heating device 3, and the heating device 3 stops heating the cabinet door glass.

[0048] In some embodiments, such as Figure 4 As shown, the control module 1 also includes a power supply unit 13, which is electrically connected to the comparator 11 and the relay 12 respectively; the power supply unit is used to convert the external power supply voltage into the operating voltage required by the comparator 11 and the relay 12.

[0049] The external power supply includes the mains power grid or a self-generated generator. The voltage of the external power supply is usually high, while the operating voltage of comparator 11, relay 12 and condensation detection module 2 is low, such as 5V. The voltage of the external power supply is converted into a low voltage after being processed by the power supply unit 13 to meet the voltage required for the operation of comparator 11, relay 12 and condensation detection module 2.

[0050] In some embodiments, such as Figure 4As shown, the relay 12 includes a third input terminal a, a fourth input terminal b, a fifth input terminal c, and a second output terminal d. The third input terminal a is electrically connected to the comparator 11, the fourth input terminal b is electrically connected to the power supply unit 13, the fifth input terminal c is electrically connected to the external power supply, and the second output terminal d is electrically connected to the heating device.

[0051] For example, such as Figure 4 As shown, relay 12 includes three input terminals and one output terminal. The third input terminal a of relay 12 is connected to comparator 11 to receive control commands sent by comparator 11. The fourth input terminal b of relay 12 is connected to power supply unit 13 to receive the operating voltage provided by power supply unit 13 to maintain the operation of relay 12. The fifth input terminal c of relay 12 is connected to the live wire L of external power supply. The second output terminal d is connected to heating device 3 through heating wire H. Heating device 3 is also connected to the neutral wire N of external power supply. By controlling relay 12 to conduct or turn off, the heating device 3 can be turned on and off.

[0052] In some embodiments, the relay includes a solid-state relay.

[0053] With this configuration, the solid-state relay has no mechanical contact parts, eliminating the lifespan issue of contact parts. Furthermore, the solid-state relay can be switched on and off repeatedly in a very short time, enabling more sensitive and efficient control of the heating power of the heating device, thereby reducing energy loss.

[0054] In some embodiments, such as Figure 4 As shown, the anti-condensation heating control device also includes: a status indication module 5; the status indication module 5 is electrically connected to the comparator 11 and is used to indicate the heating status of the heating device 3.

[0055] The status indicator module 5 is configured as a light-emitting diode (LED) indicator. The LED indicator is used to indicate the heating status of the heating device 3. When the LED indicator is lit, it indicates that the heating device 3 is heating; when the LED indicator is off, it indicates that the heating device 3 has stopped heating. The heating status of the heating device 3 is related to the energization and de-energization status of the relay 12. When the relay 12 is energized, the heating device 3 is heating; when the relay 12 is de-energized, the heating device 3 stops working.

[0056] In some embodiments, the status indication module 5 is integrated into the control module 1.

[0057] In some embodiments, such as Figure 4As shown, the anti-condensation heating control device further includes: a first mating connector and a second mating connector; wherein, the first mating connector includes a first connection port 61 and a second connection port 62, the first connection port 61 is electrically connected to the first condensation detection unit 21, the second connection port 62 is electrically connected to the first input terminal of the comparator 11, and the first connection port 61 and the second connection port 62 are connected in the air; the second mating connector includes a third connection port 63 and a fourth connection port 64, the third connection port 63 is electrically connected to the second condensation detection unit 22, the fourth connection port 64 is electrically connected to the second input terminal of the comparator 11, and the third connection port 63 and the fourth connection port 64 are connected in the air.

[0058] The mating connector includes at least one of a circular connector, a rectangular connector, and a ribbon flat cable connector.

[0059] With this configuration, the first condensation detection unit 21 and the second condensation detection unit 22 make good contact with the comparator 11, are easy to install, and can be easily replaced if one of the first condensation detection unit 21 or the second condensation detection unit 22 fails.

[0060] In some embodiments, such as Figure 6 As shown, the condensation detection module also includes: a sensor mounting component 23; the sensor mounting component 23 is used to fix the first condensation detection unit 21 and the second condensation detection unit 22.

[0061] The sensor mounting component 23 is used to fix the first condensation detection unit 21 and the second condensation detection unit 22 to the refrigerator door glass 4, ensuring good contact with the refrigerator door glass 4. The sensor mounting component 23 can be fixed using any fixing method known to those skilled in the art, for example, such as... Figure 6 As shown, the sensor mounting component 23 is a square plate with screw holes, on which the temperature sensor 122 is fixed to the glass door of the freezer by screws; or the sensor mounting component 23 can be pasted to the glass door by double-sided tape, which is not limited here.

[0062] Based on the above embodiments, this application also provides a freezer. For example... Figure 5 As shown, the freezer 100 includes: a heating device and any of the above-mentioned anti-condensation heating control devices; wherein, the heating device is installed on the glass door 4 of the freezer, and the anti-condensation heating control device is electrically connected to the heating device and has corresponding beneficial effects, which will not be described in detail here to avoid repetition.

[0063] It should be noted that, Figure 5 The right side of the control module 1 includes three connection lines, two of which are external power supply lines 71, such as the live and neutral wires of the mains power grid; the other is a connection line 72 between the relay and the heating device. Figure 6Since the heating device is not shown, the other end of the connecting line 72 is not connected to any components.

[0064] In some embodiments, such as Figure 5 and Figure 6 As shown, the control module 1 is located on the top of the freezer 100, the condensation detection module 2 is fixed at a first position on the cabinet door glass 4, and the second condensation detection unit 22 is located on the side of the first condensation detection unit 21 away from the cabinet door glass 4; wherein, the distance between the first position and the edge of the cabinet door glass 4 is less than a set distance.

[0065] The control module 1 is located on the top of the freezer 100, which does not occupy the external space of the freezer and is positioned high to avoid damage. The status indicator module 5 is integrated into the control module 1, eliminating the need for mounting holes on the top of the freezer and simplifying the assembly process.

[0066] The condensation detection module 2 is fixed to the edge of the cabinet door glass 4 without obstructing the view, allowing for easy inspection of the items stored in the freezer. For example, as shown... Figure 5 As shown, the condensation detection module 2 is fixed to the bottom edge of the cabinet door glass 4.

[0067] like Figure 6 As shown, since the temperature is lower at the bottom edge of the cabinet door glass 4, the first condensation detection unit 21 is positioned close to the cabinet door glass 4, and the second condensation detection unit 22 is positioned on the side of the first condensation detection unit 21 away from the cabinet door glass 4. With this configuration, the first condensation detection unit 21 can accurately detect the humidity of the cabinet door glass 4, and the second condensation detection unit 22 can accurately detect the ambient humidity.

[0068] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0069] The above description is merely a specific embodiment of this application, enabling those skilled in the art to understand or implement this application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this application. Therefore, this application is not to be limited to the embodiments described herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A heating control device for preventing condensation, characterized in that, include: Control module and condensation detection module; The control module includes a comparator and a relay, the first output terminal of the comparator is electrically connected to the relay, and the relay is electrically connected to the heating device. The condensation detection module includes a first condensation detection unit and a second condensation detection unit. The first condensation detection unit is electrically connected to the first input terminal of the comparator, and the second condensation detection unit is electrically connected to the second input terminal of the comparator. The first condensation detection unit is used to detect the surface humidity of the cabinet door glass and output a first voltage to the comparator; the second condensation detection unit is used to detect the ambient humidity and output a second voltage to the comparator; the comparator is used to control the relay to turn on or off based on the first voltage and the second voltage.

2. The anti-condensation heating control device according to claim 1, characterized in that, The first condensation detection unit includes a first condensation sensor, and the second condensation detection unit includes a second condensation sensor.

3. The anti-condensation heating control device according to claim 1, characterized in that, The first condensation detection unit includes a first humidity-sensitive resistor and a first resistor connected in series, and the connection point of the first humidity-sensitive resistor and the first resistor is electrically connected to the first input terminal; The second condensation detection unit includes a second humidity-sensitive resistor and a second resistor connected in series, and the connection point of the second humidity-sensitive resistor and the second resistor is electrically connected to the second input terminal.

4. The anti-condensation heating control device according to claim 1, characterized in that, The control module further includes a power supply unit, which is electrically connected to the comparator and the relay respectively. The power supply unit is used to convert the external power supply voltage into the operating voltage required by the comparator and the relay.

5. The anti-condensation heating control device according to claim 4, characterized in that, The relay includes a third input terminal, a fourth input terminal, a fifth input terminal, and a second output terminal. The third input terminal is electrically connected to the comparator, the fourth input terminal is electrically connected to the power supply unit, the fifth input terminal is electrically connected to an external power supply, and the second output terminal is electrically connected to the heating device.

6. The anti-condensation heating control device according to claim 5, characterized in that, The relays include solid-state relays.

7. The anti-condensation heating control device according to claim 1, characterized in that, Also includes: Status indicator module; The status indication module is electrically connected to the comparator and is used to indicate the heating status of the heating device.

8. The anti-condensation heating control device according to any one of claims 1-7, characterized in that, Also includes: First mating connector and second mating connector; The first mating connector includes a first connection port and a second connection port. The first connection port is electrically connected to the first condensation detection unit, and the second connection port is electrically connected to the first input terminal. The first connection port and the second connection port are connected in-air by mating. The second mating connector includes a third connection port and a fourth connection port. The third connection port is electrically connected to the second condensation detection unit, and the fourth connection port is electrically connected to the second input terminal. The third connection port and the fourth connection port are connected in the air by mating.

9. A freezer, characterized in that, include: Heating device and anti-condensation heating control device as described in any one of claims 1-8; The heating device is installed on the glass door of the freezer, and the anti-condensation heating control device is electrically connected to the heating device.

10. The freezer according to claim 9, characterized in that, The control module is located at the top of the freezer, the condensation detection module is fixed at the first position of the cabinet door glass, and the second condensation detection unit is located on the side of the first condensation detection unit away from the cabinet door glass. The distance between the first position and the edge of the cabinet door glass is less than a set distance.

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