CN112201491A - Refrigerator with a door - Google Patents
Refrigerator with a door Download PDFInfo
- Publication number
- CN112201491A CN112201491A CN202011232677.XA CN202011232677A CN112201491A CN 112201491 A CN112201491 A CN 112201491A CN 202011232677 A CN202011232677 A CN 202011232677A CN 112201491 A CN112201491 A CN 112201491A
- Authority
- CN
- China
- Prior art keywords
- door
- main control
- refrigerator
- control board
- power supply
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H3/00—Mechanisms for operating contacts
- H01H3/02—Operating parts, i.e. for operating driving mechanism by a mechanical force external to the switch
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D23/00—General constructional features
- F25D23/02—Doors; Covers
- F25D23/028—Details
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D29/00—Arrangement or mounting of control or safety devices
- F25D29/003—Arrangement or mounting of control or safety devices for movable devices
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D29/00—Arrangement or mounting of control or safety devices
- F25D29/006—Safety devices
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H5/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal non-electric working conditions with or without subsequent reconnection
- H02H5/12—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal non-electric working conditions with or without subsequent reconnection responsive to undesired approach to, or touching of, live parts by living beings
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/007—Regulation of charging or discharging current or voltage
- H02J7/00712—Regulation of charging or discharging current or voltage the cycle being controlled or terminated in response to electric parameters
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J9/00—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
- H02J9/04—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source
- H02J9/06—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/30—Systems integrating technologies related to power network operation and communication or information technologies for improving the carbon footprint of the management of residential or tertiary loads, i.e. smart grids as climate change mitigation technology in the buildings sector, including also the last stages of power distribution and the control, monitoring or operating management systems at local level
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S20/00—Management or operation of end-user stationary applications or the last stages of power distribution; Controlling, monitoring or operating thereof
- Y04S20/20—End-user application control systems
Abstract
The invention discloses a refrigerator, comprising: the power supply box comprises a box body provided with a first contact end, a box door provided with a second contact end, a power utilization component arranged on the box door, and a standby power supply arranged in the box door and used for supplying power to the power utilization component when the box door is opened, wherein the first contact end is in contact with the second contact end to be conducted when the box door is closed, and the first contact end and the second contact end are respectively powered off when the box door is opened. According to the refrigerator, the first contact end and the second contact end are powered off respectively when the refrigerator door is opened, so that the safety of electricity utilization of a user is guaranteed, the situation that the contact ends are in electric shock after the refrigerator door is opened by the user is avoided, the wireless communication modules are arranged on the refrigerator body and the refrigerator door, electric signals on the refrigerator body and the refrigerator door can be mutually transmitted, charging is controlled according to the residual electric quantity, and the service life of a battery is prolonged.
Description
Technical Field
The invention relates to the field of refrigerators, in particular to a refrigerator.
Background
In the existing refrigerator, electric parts, such as a display, a door sensor, an electric heating wire and the like, are arranged on a rotary door of the refrigerator. The power supply and the main control board are often disposed in the refrigerator body, and therefore, the wire harnesses for achieving electrical connection need to be led out from the refrigerator body and the refrigerator door respectively. The rotating shaft of a common revolving door can be hollow, the connecting wire harness is led out from the box door through the rotating shaft, and then the embedded box is arranged beside the rotating shaft of the box body in a butt joint mode. The structure is complex in design, and a plurality of assembly parts are added, so that the production and the installation are not facilitated.
In the prior art, a refrigerator in which connection is achieved by using contact connection instead of the prior art that a wire harness penetrates through a hollow rotating shaft, so that the electrical connection between a refrigerator door and a refrigerator body can be more simply and conveniently achieved, appears. However, the structure can cause that the control of the load in the box door is lost when the door is opened, and the contact end is electrified, so that the electricity utilization safety of a user is influenced.
Disclosure of Invention
The invention provides a refrigerator for solving the technical problem that safety is affected by electrification of a contact end in the prior art.
The technical scheme adopted by the invention is as follows:
the invention provides a refrigerator, comprising: the power supply box comprises a box body provided with a first contact end, a box door provided with a second contact end, a power utilization component arranged on the box door, and a standby power supply arranged in the box door and used for supplying power to the power utilization component when the box door is opened, wherein the first contact end is in contact with the second contact end to be conducted when the box door is closed, and the first contact end and the second contact end are respectively powered off when the box door is opened.
The invention also comprises a first communication module arranged on the box body and a second communication module which is arranged on the box door, is connected with the electric part and is in wireless communication with the first communication module. The door switch is used for detecting the opening and closing state of the door of the refrigerator and sending a door opening and closing signal, and the first main control board is arranged on the refrigerator body and used for receiving the door opening and closing signal and controlling the on-off state of the first contact end.
Furthermore, a relay is arranged at the power output end of the first main control board, the relay is connected with the first contact end through a power line, and when the first main control board receives a door opening signal, the first relay is controlled to disconnect the connection between the first contact end and the first main control board.
Further, the second contact end is connected to a power line of the electric component and passes through a door switch, and the door switch disconnects the second contact end from the power line of the electric component when the box door is opened.
The electric component includes: the load is connected with the door switch and receives the door switch signal to control the second main control board of the charging and discharging of the standby power supply, and the second main control board transmits the received door switch signal to the first main control board through the communication module.
The specific control is as follows:
when the door of the refrigerator is closed, the second main control panel detects the residual electric quantity of the standby power supply, judges whether the residual electric quantity is lower than a charging preset value, and if yes, the second main control panel is communicated with the standby power supply to charge.
And in the process that the second main control board is communicated with the standby power supply to charge, judging whether the residual electric quantity of the standby power supply is higher than or equal to a termination preset value, if so, disconnecting the second main control board from the standby power supply.
Preferably, the second main control board judges the remaining capacity of the standby power supply by collecting the voltage of the standby power supply.
Furthermore, an intermediate relay is arranged at the power input end of the box door or the second main control board, and the intermediate relay is connected between the second main control board and the standby power supply in series.
Compared with the prior art, the refrigerator door power-off device has the advantages that the first contact end and the second contact end are powered off respectively when the refrigerator door is opened, so that the safety of electricity utilization of a user is guaranteed, the situation that the contact ends are in electric shock after the refrigerator door is opened by the user is avoided, the wireless communication modules are arranged on the refrigerator body and the refrigerator door, electric signals on the refrigerator body and the refrigerator door can be mutually transmitted, the charging is controlled according to the residual electric quantity, and the service life of a battery is prolonged.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive exercise.
FIG. 1 is a schematic structural diagram in an embodiment of the present invention;
FIG. 2 is a flow chart of the selective powering according to an embodiment of the present invention;
FIG. 3 is a flowchart illustrating controlling whether the contact terminal is charged according to an embodiment of the present invention;
FIG. 4 is a flowchart of controlling an intermediate relay in an embodiment of the present invention;
FIG. 5 is a flow chart of controlling a relay in an embodiment of the present invention;
fig. 6 is a flowchart of controlling charging of the backup power supply according to an embodiment of the present invention.
Detailed Description
In order to make the technical problems, technical solutions and advantageous effects to be solved by the present invention more clearly apparent, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The principles and construction of the present invention will be described in detail below with reference to the drawings and examples.
As shown in fig. 1, the present invention provides a refrigerator including: the box comprises a box body 1, a box door 2, power utilization parts and a standby power supply 4. The front opening of box 1, chamber door 2 articulate at the front opening part of box 1, make chamber door 2 can follow a side rotation right, open or close the positive opening of box 1, the setting structure of general refrigerator promptly, do not specifically give unnecessary details.
As shown in fig. 2, the power consumption component and the standby power source 4 are disposed on the box door 2, the opening side of the box body 1 is provided with a first contact end 11, and a second contact end 21 is disposed on the box door 2 at a position corresponding to the first contact end 11, so that the first contact end 11 is in contact with the second contact end 21 when the box door 2 is closed. When the door 2 is opened, the first contact end 11 is separated from the second contact end 21 and is powered off respectively, and at the moment, the power utilization components on the door 2 are powered on through the standby power supply 4. The first contact end 11 and the second contact end 21 are respectively powered off when the refrigerator door is opened, so that the situation that a user accidentally touches the contact end 21 to cause electric shock after opening the refrigerator door is avoided, and the power utilization safety of the user is guaranteed.
As shown in fig. 3 to 5, the present invention further includes a first communication module 12, a second communication module 22, a first main control board 13, a door switch 5, a load 31, and a second main control board 32. The load 31 and the second main control board 32 are power-consuming parts on the box door 2, and the first communication module 12 and the first main control board 13 are connected and arranged on the box body 1. The second communication module 22 is electrically connected to the second main control board 32 and the load 31 and is disposed on the door 2. The first communication module 12 can perform wireless communication with the second communication module 22, so that the first main control board 13 and the second main control board 32 can transmit information through the communication module, thereby ensuring information interaction between the box body 1 and the box door 2 when the box door is opened. Since the load on the door 2 generally includes a control panel for displaying the temperature and controlling the temperature or operation state of the refrigerator, these are transferred to the first main control panel to control specific components through the first main control panel.
The power input end of the first main control board 13 is provided with a first relay, the first relay is connected with the first contact end 11 through a power line, and when the first main control board 13 receives a door opening signal sent by the second main control board 32, the first relay is controlled to disconnect the power output end of the first main control board 13 from the first contact end 11, so that the first contact end 11 is not electrified. When the first main control board 13 receives the door closing signal sent by the second main control board 32, the first relay is controlled to communicate the power output end of the first main control board 13 with the first contact end 11, so that the first contact end is electrified and the second contact end is conducted to supply power to the power utilization component on the door.
The door switch 5 is arranged on the door 2 and is a mechanical door switch commonly used on a refrigerator, different electric signals for opening and closing the door are formed by pressing and conducting a spring when the door is closed, so that the opening and closing state of the door can be detected, a door opening and closing signal is sent to the second main control board, a power line of a power input positive end of the second main control board is connected with the second contact end and passes through the door switch, the power line is disconnected due to rebounding of the spring positioned in the door switch when the door is opened, and the second contact end is disconnected with the second main control board and is not electrified.
In one embodiment, the positive terminal of the power input terminal of the second main control board 32 is provided with a second relay, and the second contact end 21 is directly connected to the positive terminal and the negative terminal of the power input terminal of the second main control board 32 without passing through the second relay. One end of the standby power supply 4 is connected to the negative end of the power supply input end of the second main control board 32, and the other end is connected to the second relay. The second main control board 32 is enabled to select conduction with the backup power by controlling the second relay. And the second relay can also be set up on the chamber door 2 alone as an individual intermediate relay, its normally closed auxiliary contact connects in series on the second main control panel and stand-by power supply's power cord. Is convenient for maintenance and replacement in the future.
When the door is opened, the door switch 5 automatically disconnects the power line between the second contact end 21 and the second main control board 32, the second main control board 32 receives a door opening signal sent by the door switch, and the second main control board 32 controls the second relay to enable the input positive end of the second main control board 32 to be connected with the standby power supply 4, so that the standby power supply 4 supplies power to the second main control board 32 and the load.
When the door is closed, the door switch 5 is automatically connected to a power line between the second contact end 21 and the second main control board 43, the second main control board 43 receives a door opening signal sent by the door switch, the second main control board 43 sends the door opening signal to the first main control board 13, the first main control board 13 controls the first relay to conduct the first contact end 11, and at this time, the first contact end 11 is in contact with the second contact end 21 to be conducted. When the door is closed, the external power supply supplies power to the electric devices in the door.
In order to prolong the service life of the battery in the backup power supply, the second main control board 32 controls the power of the backup power supply 4. When the door 2 of the refrigerator is closed, the second main control panel 32 detects the remaining power of the standby power supply, and judges whether the remaining power is lower than a preset charging value; if the power supply is insufficient, the second main control board is communicated with the standby power supply through a second relay to charge the standby power supply; and if not, the second main control board is disconnected with the standby power supply through a second relay.
In the process that the second main control board 32 communicates the standby power supply 4 to charge, the second main control board 32 judges whether the remaining capacity of the standby power supply 4 is higher than or equal to the termination preset value, if so, the second main control board 32 controls the second relay to disconnect from the standby power supply, and if not, the second main control board continues to communicate the standby power supply through the second relay. Charging is specifically carried out as follows.
As shown in fig. 6, the second main control board 32 collects the terminal voltage of the backup power source 4 to sense the power condition in the backup power source. Setting a voltage interval in which the electric quantity is most beneficial to the service life of the standby power supply, wherein the two ends of the interval are respectively an initial charging voltage and a final charging voltage.
When the collected voltage is smaller than the initial charging voltage, namely the charging preset value, the second main control board controls the second relay to be conducted, and at the moment, the standby power supply is charged. And then, continuously collecting the terminal voltage at intervals. If the collected voltage is smaller than the initial charging voltage or within the range of the initial charging voltage and the ending charging voltage, the standby power supply is continuously charged. And when the voltage reaches the charging termination voltage, the second main control board controls the second relay to be disconnected, and the standby power supply is stopped to be charged at the moment. And repeating the process again until the voltage collected again is less than the initial charging voltage to charge the standby power supply.
When the collected voltage is larger than the initial charging voltage, the second main control board controls the second relay to be disconnected, and the standby power supply is not charged at the moment. The above-mentioned process is not started until the terminal voltage is detected to be less than the initial charging voltage again, the standby power supply is charged, and the charging is stopped until the terminal voltage reaches the final charging voltage. And repeating the process again when the terminal voltage to be acquired again is smaller than the initial charging voltage to charge the standby power supply. The procedure was repeated. Through the control, the electric quantity in the standby power supply can be always in the range favorable for prolonging the service life, and the service life of the standby power supply is prolonged.
In other embodiments, the door switch may be disposed on the box body, and sends the door opening and closing signal to the first main control board, and then the first main control board sends the door opening and closing signal to the second main control board through wireless communication. And door switches can be arranged on the box body and the box door, and door opening and closing signals are respectively sent to the first main control board and the second main control board, so that the reliability is improved, and the invention is in the protection scope.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (10)
1. A refrigerator, comprising: the power supply box comprises a box body provided with a first contact end, a box door provided with a second contact end, a power utilization component arranged on the box door, and a standby power supply arranged in the box door and used for supplying power to the power utilization component when the box door is opened, wherein the first contact end is in contact with the second contact end to conduct when the box door is closed.
2. The refrigerator as claimed in claim 1, further comprising a first communication module disposed on the cabinet, and a second communication module disposed on the door and connected to the electric parts and wirelessly communicating with the first communication module.
3. The refrigerator of claim 2, further comprising: the door switch is used for detecting the opening and closing state of the door of the refrigerator and sending a door opening and closing signal, and the first main control board is arranged on the refrigerator body and used for receiving the door opening and closing signal and controlling the on-off state of the first contact end.
4. The refrigerator as claimed in claim 3, wherein the power output terminal of the first main control board is provided with a relay, the relay is connected to the first contact terminal through a power line, and the first relay is controlled to disconnect the first contact terminal from the first main control board when the first main control board receives a door opening signal.
5. The refrigerator as claimed in claim 3, wherein the second contact terminal is connected to a power line of the electric part through a door switch, and the door switch disconnects the second contact terminal from the power line of the electric part when the door is opened.
6. The refrigerator as claimed in claim 3, wherein the power using part comprises: the load is connected with the door switch and receives the door switch signal to control the second main control board of the charging and discharging of the standby power supply, and the second main control board transmits the received door switch signal to the first main control board through the communication module.
7. The refrigerator as claimed in claim 6, wherein when the door of the refrigerator is closed, the second main control panel detects a remaining power amount of the standby power supply, determines whether the remaining power amount is lower than a charging preset value, and if so, the second main control panel is connected to the standby power supply for charging.
8. The refrigerator of claim 7, wherein in the process of the second main control board communicating with the backup power supply for charging, it is determined whether the remaining capacity of the backup power supply is higher than or equal to a termination preset value, and if so, the second main control board is disconnected from the backup power supply.
9. The refrigerator of claim 7, wherein the second main control board judges the remaining capacity of the backup power by collecting a voltage of the backup power.
10. The refrigerator as claimed in claim 6, wherein an intermediate relay is provided at a power input terminal of the door or the second main control board, and the intermediate relay is connected in series between the second main control board and the standby power.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011232677.XA CN112201491A (en) | 2020-11-06 | 2020-11-06 | Refrigerator with a door |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011232677.XA CN112201491A (en) | 2020-11-06 | 2020-11-06 | Refrigerator with a door |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112201491A true CN112201491A (en) | 2021-01-08 |
Family
ID=74034140
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011232677.XA Pending CN112201491A (en) | 2020-11-06 | 2020-11-06 | Refrigerator with a door |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112201491A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4290138B2 (en) * | 2005-03-25 | 2009-07-01 | 三洋電機株式会社 | Low temperature storage |
| CN204693945U (en) * | 2015-03-20 | 2015-10-07 | 合肥晶弘电器有限公司 | A kind of refrigerator with independent display board |
| CN105553053A (en) * | 2016-03-07 | 2016-05-04 | 成都比善科技开发有限公司 | Uninterrupted power supply-powered control system for entrance guard |
| CN105627664A (en) * | 2014-10-31 | 2016-06-01 | 宁波吉德电器有限公司 | Freshness retaining refrigerator capable of automatically powering off to remove static electricity after door is opened |
| CN209707939U (en) * | 2019-03-25 | 2019-11-29 | 青岛海尔洗衣机有限公司 | Circuit is protected in the enabling of electrical equipment |
| CN110736295A (en) * | 2018-07-19 | 2020-01-31 | 博西华电器（江苏）有限公司 | Household electrical appliance |
-
2020
- 2020-11-06 CN CN202011232677.XA patent/CN112201491A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4290138B2 (en) * | 2005-03-25 | 2009-07-01 | 三洋電機株式会社 | Low temperature storage |
| CN105627664A (en) * | 2014-10-31 | 2016-06-01 | 宁波吉德电器有限公司 | Freshness retaining refrigerator capable of automatically powering off to remove static electricity after door is opened |
| CN204693945U (en) * | 2015-03-20 | 2015-10-07 | 合肥晶弘电器有限公司 | A kind of refrigerator with independent display board |
| CN105553053A (en) * | 2016-03-07 | 2016-05-04 | 成都比善科技开发有限公司 | Uninterrupted power supply-powered control system for entrance guard |
| CN110736295A (en) * | 2018-07-19 | 2020-01-31 | 博西华电器（江苏）有限公司 | Household electrical appliance |
| CN209707939U (en) * | 2019-03-25 | 2019-11-29 | 青岛海尔洗衣机有限公司 | Circuit is protected in the enabling of electrical equipment |
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Application publication date: 20210108 |
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| RJ01 | Rejection of invention patent application after publication |