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CN-224215662-U - Dew-proof heating control device and refrigerator

CN224215662UCN 224215662 UCN224215662 UCN 224215662UCN-224215662-U

Abstract

The application relates to a dewing prevention heating control device and a refrigerator, wherein the dewing prevention heating control device comprises a control module and a dewing detection module, the control module comprises a comparator and a relay, a first output end of the comparator is electrically connected with the relay, the relay is electrically connected with a heating device, the dewing detection module comprises a first dewing detection unit and a second dewing detection unit, the first dewing detection unit is electrically connected with a first input end of the comparator, the second dewing detection unit is electrically connected with a second input end of the comparator, the first dewing detection unit is used for detecting the surface humidity of cabinet door glass and outputting a first voltage to the comparator, the second dewing detection unit is used for detecting the ambient humidity and outputting a second voltage to the comparator, and the comparator is used for controlling the relay to be turned on or off. Compared with a singlechip, the comparator has the advantages of low price and strong anti-interference performance, reduces the requirements of the power supply on performance, electromagnetic shielding and heat dissipation of the whole machine, and reduces the cost of the whole machine.

Inventors

  • SUN JIAN

Assignees

  • 青州华艺家电玻璃有限公司

Dates

Publication Date
20260508
Application Date
20250526

Claims (10)

  1. 1. The anti-condensation heating control device is characterized by comprising a control module and a condensation detection module; The control module comprises a comparator and a relay, wherein a first output end of the comparator is electrically connected with the relay, and the relay is electrically connected with the heating device; The dew condensation detection module comprises a first dew condensation detection unit and a second dew condensation detection unit, wherein the first dew condensation detection unit is electrically connected with a first input end of the comparator, and the second dew condensation detection unit is electrically connected with a second input end of the comparator; The first dew condensation detection unit is used for detecting the surface humidity of cabinet door glass and outputting a first voltage to the comparator, the second dew condensation detection unit is used for detecting the ambient humidity and outputting a second voltage to the comparator, and the comparator is used for controlling the relay to be switched on or switched off based on the first voltage and the second voltage.
  2. 2. The anti-condensation heating control apparatus according to claim 1, wherein the first condensation detection unit includes a first condensation sensor, and the second condensation detection unit includes a second condensation sensor.
  3. 3. The dewing prevention heating control device according to claim 1, wherein, The first dew detection unit comprises a first humidity resistor and a first resistor which are connected in series, and the connection point of the first humidity resistor and the first resistor is electrically connected with the first input end; The second dew detection unit comprises a second humidity resistor and a second resistor which are connected in series, and the connection point of the second humidity resistor and the second resistor is electrically connected with the second input end.
  4. 4. The dewing prevention heating control device of claim 1, wherein said control module further comprises a power supply unit electrically connected to said comparator and said relay, respectively; the power supply unit is used for converting the external power supply voltage into working voltages required by the comparator and the relay.
  5. 5. The dewing prevention heating control device of claim 4, wherein the relay comprises a third input terminal, a fourth input terminal, a fifth input terminal and a second output terminal, wherein the third input terminal is electrically connected with the comparator, the fourth input terminal is electrically connected with the power supply unit, the fifth input terminal is electrically connected with an external power supply, and the second output terminal is electrically connected with the heating device.
  6. 6. The anti-dewing heating control device of claim 5, wherein said relay comprises a solid state relay.
  7. 7. The anti-dewing heating control device of claim 1, further comprising a status indication module; The state indicating module is electrically connected with the comparator and is used for indicating the heating state of the heating device.
  8. 8. The dewing prevention heating control device according to any one of claims 1 to 7, further comprising a first pair of inserting connectors and a second pair of inserting connectors; The first opposite-plug connector comprises a first connecting port and a second connecting port, the first connecting port is electrically connected with the first dew condensation detection unit, the second connecting port is electrically connected with the first input end, and the first connecting port and the second connecting port are in air opposite-plug connection; The second opposite-plug connector comprises a third connecting port and a fourth connecting port, the third connecting port is electrically connected with the second dew condensation detection unit, the fourth connecting port is electrically connected with the second input end, and the third connecting port and the fourth connecting port are in air opposite-plug connection.
  9. 9. A refrigerator, characterized by comprising a heating device and the anti-condensation heating control device according to any one of claims 1-8; The heating device is arranged on the cabinet door glass of the refrigerator, and the anti-condensation heating control device is electrically connected with the heating device.
  10. 10. The refrigerator according to claim 9, wherein the control module is located at a top of the refrigerator, the condensation detection module is fixed at a first position of the door glass, and the second condensation detection unit is located at a side of the first condensation detection unit facing away from the door glass; the distance between the first position and the edge of the cabinet door glass is smaller than a set distance.

Description

Dew-proof heating control device and refrigerator Technical Field The application 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 is easy to form condensation, so that the permeation effect is affected, and a heating device is generally adopted to heat the glass door, so that the temperature of the outer surface of the cabinet door glass is higher than the dew point temperature, and the condensation is prevented. In the related art, the heating control device mainly comprises a controller (such as a single-chip microcomputer), a temperature and humidity sensor, a temperature sensor, a relay and other devices, wherein the temperature and humidity sensor is used for collecting the temperature and humidity of the environment, the temperature sensor is used for collecting the temperature of cabinet door glass, the single-chip microcomputer calculates the dew point temperature according to the temperature and humidity of the environment, when the temperature of the glass door is close to the dew point temperature, the single-chip microcomputer controls the heating device to heat, and when the temperature of the glass door is higher than the dew point temperature, the single-chip microcomputer controls the heating device to stop heating. The singlechip, the temperature and humidity sensor, the temperature sensor and other devices which are easy to be subjected to electromagnetic interference have certain requirements on the performance of a power supply, the selection of electronic components, electromagnetic shielding and heat dissipation of the whole machine, so that the cost of the whole machine can be increased. Disclosure of utility model In order to solve the technical problems, the application provides an anti-condensation heating control device and a refrigerator. The application provides a dew-proof heating control device, comprising: the control module and the dew detection module; The control module comprises a comparator and a relay, wherein a first output end of the comparator is electrically connected with the relay, and the relay is electrically connected with the heating device; The dew condensation detection module comprises a first dew condensation detection unit and a second dew condensation detection unit, wherein the first dew condensation detection unit is electrically connected with a first input end of the comparator, and the second dew condensation detection unit is electrically connected with a second input end of the comparator; The first dew condensation detection unit is used for detecting the surface humidity of cabinet door glass and outputting a first voltage to the comparator, the second dew condensation detection unit is used for detecting the ambient humidity and outputting a second voltage to the comparator, and the comparator is used for controlling the relay to be switched on or switched off based on the first voltage and the second voltage. Optionally, the first condensation detection unit includes a first condensation sensor, and the second condensation detection unit includes a second condensation sensor. Optionally, the first condensation detection unit comprises a first humidity resistor and a first resistor which are connected in series, and a connection point of the first humidity resistor and the first resistor is electrically connected with the first input end; The second dew detection unit comprises a second humidity resistor and a second resistor which are connected in series, and the connection point of the second humidity resistor and the second resistor is electrically connected with the second input end. Optionally, the control module further comprises a power supply unit, wherein the power supply unit is electrically connected with the comparator and the relay respectively; the power supply unit is used for converting the external power supply voltage into working voltages required by the comparator and the relay. Optionally, the relay includes a third input end, a fourth input end, a fifth input end and a second output end, wherein the third input end is electrically connected with the comparator, the fourth input end is electrically connected with the power supply unit, the fifth input end is electrically connected with an external power supply, and the second output end is electrically connected with the heating device. Optionally, the relay comprises a solid state relay. Optionally, the anti-condensation heating control device also comprises a status indication module; The state indicating module is electrically connected with the comparator and is used for indicating the heating state of the heating device. Optionally, the anti-dewing heating control device further comprises a first pair of inserting connectors and a second pair of inserting connectors; The first opposite-plug connector comprises a f