Search

CN-116670394-B - Inspection method of water supply pump

CN116670394BCN 116670394 BCN116670394 BCN 116670394BCN-116670394-B

Abstract

A method of inspecting a water supply pump (28), the water supply pump (28) being provided in an ice maker (25) inside a refrigerator (10) for delivering water from a water supply tank (26) to an ice making tray (27), includes controlling an operation of the water supply pump (28), and judging whether the water supply pump (28) is good or bad based on a voltage at which the water supply pump (28) is operated. The quality of the water supply pump (28) is judged based on the voltage of the water supply pump (28) when the water supply pump is operated, and the water discharge amount of the water supply pump (28) is not required to be measured, so that the quality of the pump can be simply judged.

Inventors

  • OOTANI TAKASHI
  • AOKI KINSHI

Assignees

  • 海尔智家股份有限公司
  • 青岛海尔电冰箱有限公司
  • AQUA株式会社

Dates

Publication Date
20260512
Application Date
20211220
Priority Date
20201225

Claims (9)

  1. 1. A method of inspecting a water supply pump for delivering water from a water supply tank to an ice making tray in an ice making machine provided inside a refrigerator, the method comprising: Controlling the operation of the water supply pump, and Judging whether the water supply pump is good or bad based on the voltage when the water supply pump is operated; The "judging whether the water supply pump is good or bad" based on the voltage at the time of the operation of the water supply pump includes judging that the water supply pump is good if the peak voltage during the reverse rotation when the water supply pump is not under load is lower than the peak voltage during the normal rotation when the water supply pump is under rated load in a state that water is present in the water supply tank.
  2. 2. The method for inspecting a water supply pump according to claim 1, wherein, "Controlling the operation of the water supply pump" includes: the water supply pump is controlled to operate in a forward rotation direction and a reverse rotation direction.
  3. 3. The method for inspecting a water supply pump according to claim 1, wherein, "Controlling the operation of the water supply pump" includes: And controlling the water supply pump to operate in a forward rotation direction and a reverse rotation direction in a state that water exists in the water supply tank and in a state that water does not exist in the water supply tank.
  4. 4. The method of inspecting a water supply pump according to any one of claims 1 to 3, wherein "judging whether the water supply pump is good or bad based on a voltage at the time of operation of the water supply pump" includes judging whether the water supply pump is good or bad based on a voltage value detected by a conversion circuit in the refrigerator.
  5. 5. The inspection method of a water supply pump according to claim 3, wherein "judging whether the water supply pump is good or bad based on a voltage at the time of operation of the water supply pump" includes: and in the state that water exists in the water supply tank, if the peak voltage of the water supply pump is larger than the threshold voltage during the normal rotation of the water supply pump when the water supply pump is rated to be loaded, judging that the water supply pump is qualified.
  6. 6. The inspection method of a water supply pump according to claim 3, wherein "judging whether the water supply pump is good or bad based on a voltage at the time of operation of the water supply pump" includes: and in a state that the water supply tank is not filled with water, if the peak voltage during the forward rotation of the water supply pump is smaller than the threshold voltage when the water supply pump is not loaded, judging that the water supply pump is qualified.
  7. 7. The inspection method of a water supply pump according to claim 4, wherein "judging whether the water supply pump is good or bad based on a voltage at the time of operation of the water supply pump" includes: if the voltage value does not change, it is determined that an electric wire connected to the water supply pump is disconnected or a control board or a circuit element is damaged.
  8. 8. The inspection method of a water supply pump according to claim 4, wherein "judging whether the water supply pump is good or bad based on a voltage at the time of operation of the water supply pump" includes: If the voltage value does not change, it is determined that the lead wire is connected to the water supply pump in reverse.
  9. 9. The inspection method of a water supply pump according to claim 3, wherein "judging whether the water supply pump is good or bad based on a voltage at the time of operation of the water supply pump" includes: If the water supply pump is reversed and water is not supplied from the water supply tank in all the time periods, it is determined that an electric wire connected to the water supply pump is broken or a control board or a circuit element is damaged.

Description

Inspection method of water supply pump Technical Field The present invention relates to a method for inspecting a water supply pump, and more particularly, to a method for inspecting a water supply pump provided in an ice maker of a refrigerator. Background Among the refrigerators in recent years, there are refrigerators including an automatic ice maker. In this automatic ice maker, a water supply tank and a water supply pump are disposed in a refrigerator, and an ice tray is disposed in a freezer. When the automatic ice maker makes ice, water stored in the water supply tank is transferred to the ice making tray by an attractive force of the water supply pump, and the water is frozen in the ice making tray, thereby making ice. For example, patent document 1 (japanese patent application laid-open No. 2003-014349) describes a refrigerator including an automatic ice maker. In a manufacturing process of a refrigerator including an automatic ice maker, there is a testing process in which operations of various constituent devices included in the refrigerator are confirmed after an assembling process of the refrigerator is completed. In this test step, the operation of the automatic ice maker was also confirmed. Specifically, water is stored in the water supply tank, and the water supply pump is operated to confirm the flow rate of water supplied by the water supply pump, thereby confirming the operation of the automatic ice maker. However, in the above-described background art, there is room for improvement from the viewpoint of efficiently confirming the quality of the ice maker. Specifically, when determining whether or not the ice maker is good by confirming the discharge amount of the water supply pump, the operator needs to dispose a measuring instrument on the discharge side of the water supply pump, and visually confirm the discharge amount. Such a confirmation operation is complicated, and a long time is required. Disclosure of Invention The present invention has been made in view of the above circumstances, and an object of the present invention is to provide an inspection method capable of judging whether an ice maker is good or bad even if the amount of water discharged is not confirmed. The inspection method of the water supply pump is used for inspecting the water supply pump, the water supply pump is arranged in an ice maker in the refrigerator and used for conveying water from a water supply tank to an ice making tray, and the inspection method is characterized by comprising the steps of controlling the operation of the water supply pump and judging whether the water supply pump is good or bad based on the voltage when the water supply pump works. In the inspection method of the water supply pump according to the present invention, the "controlling the operation of the water supply pump" includes controlling the operation of the water supply pump in the forward rotation direction and the reverse rotation direction, and the "judging the quality of the water supply pump based on the voltage when the water supply pump is operated" includes judging the quality of the water supply pump based on the voltage when the water supply pump is operated in the forward rotation direction and the voltage when the water supply pump is operated in the reverse rotation direction. In the inspection method of the water supply pump according to the present invention, the "controlling the operation of the water supply pump" includes operating the water supply pump in a forward direction and a reverse direction in a state where water is present in the water supply tank and in a state where water is not present in the water supply tank, and the "determining whether the water supply pump is good or bad based on the voltage at the time of operation of the water supply pump" includes determining whether the water supply pump is good or bad based on the voltage at the time of operation of the water supply pump in the forward direction and the voltage at the time of operation of the water supply pump in the reverse direction in a state where water is not present in the water supply tank. In the inspection method of the water supply pump according to the present invention, the "determining whether the water supply pump is good or bad based on the voltage at the time of operation of the water supply pump" includes determining whether the water supply pump is good or bad based on the voltage value detected by the inverter circuit in the refrigerator. Effects of the invention The inspection method of the water supply pump is used for inspecting the water supply pump, and the water supply pump is arranged in an ice maker in the refrigerator to convey water from a water supply tank to an ice making tray. Therefore, according to the inspection method of the water supply pump of the present invention, the quality of the water supply pump is determined based on the voltage at the time of operation of the water supply pump, and thus it i