CN210899750U - Constant-voltage constant-current power supply for sterilizing and purifying refrigerator - Google Patents
Constant-voltage constant-current power supply for sterilizing and purifying refrigerator Download PDFInfo
- Publication number
- CN210899750U CN210899750U CN201921899257.XU CN201921899257U CN210899750U CN 210899750 U CN210899750 U CN 210899750U CN 201921899257 U CN201921899257 U CN 201921899257U CN 210899750 U CN210899750 U CN 210899750U
- Authority
- CN
- China
- Prior art keywords
- ljy5203
- control chip
- drive control
- led drive
- efficiency led
- 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.)
- Active
Links
Images
Landscapes
- Cold Air Circulating Systems And Constructional Details In Refrigerators (AREA)
- Disinfection, Sterilisation Or Deodorisation Of Air (AREA)
- Apparatus For Disinfection Or Sterilisation (AREA)
Abstract
A constant-voltage constant-current power supply for sterilizing and purifying a refrigerator comprises a shell and an LJY5203 high-efficiency LED drive control chip. The LJY5203 high-efficiency LED drive control chip is arranged in the shell. One end of the shell is provided with an input end, and a voltage stabilizing capacitor is connected with the input end in parallel. One end of the voltage-stabilizing capacitor is connected with a reactor through a lead, and the other end of the reactor is connected with a VDD pin of the LJY5203 high-efficiency LED drive control chip. The reactor and the VDD pin of the LJY5203 high-efficiency LED drive control chip are connected with a filter capacitor through a lead, and the other end of the filter capacitor is connected with two GND pins of the LJY5203 high-efficiency LED drive control chip. The other pin D of the LJY5203 high-efficiency LED drive control chip is connected with an inductor through a lead, and the other end of the inductor is connected with a UV disinfection and sterilization lamp through a lead. The utility model discloses simple structure, it is with low costs, can ensure the permanent stable operation of refrigerator disinfection clean system, provide constant voltage constant current power supply for the UV sterilamp, guarantee the life of sterilamp.
Description
Technical Field
The utility model belongs to the technical field of the circuit board, a refrigerator disinfection purifies constant voltage constant current power supply is related to.
Background
The refrigerator is a refrigerating device for keeping constant low temperature, and is a civil product for keeping food or other articles in a constant low-temperature cold state. The cabinet or the box is provided with a compressor, an ice maker for freezing and a storage box with a refrigerating device. The use of refrigerators is increasing in people's lives today. The existing refrigerator is provided with the decorative lamp and the sterilizing lamp, but the power supply voltage for supplying power to the decorative lamp and the sterilizing lamp in the refrigerator is unstable, after the refrigerator is used for a period of time, the phenomenon that the LED is burnt due to the rise of current can often occur, the service life is shortened, and food in the refrigerator is easy to deteriorate and breed bacteria due to the fact that the sterilizing lamp does not work.
SUMMERY OF THE UTILITY MODEL
To the problem that exists among the above-mentioned prior art, the utility model provides a refrigerator disinfection purifies constant voltage constant current power supply, the device can ensure that the disinfection of refrigerator purifies microcirculation system and continuously plays a role, provides constant voltage constant current power supply for the UV sterilamp, guarantees the life of sterilamp.
In order to achieve the purpose, the utility model adopts the following technical scheme:
a constant-voltage constant-current power supply for sterilizing and purifying a refrigerator comprises a shell and an LJY5203 high-efficiency LED drive control chip. The LJY5203 high-efficiency LED drive control chip is fixedly arranged in the shell.
One end of the shell is provided with an input end, and a voltage stabilizing capacitor is connected with the input end in parallel. One end of the voltage-stabilizing capacitor is connected with a reactor through a lead, and the other end of the reactor is connected with a VDD pin of the LJY5203 high-efficiency LED drive control chip.
The reactor and the VDD pin of the LJY5203 high-efficiency LED drive control chip are connected with a filter capacitor through a lead, and the other end of the filter capacitor is connected with two GND pins of the LJY5203 high-efficiency LED drive control chip.
The other end of the voltage stabilizing capacitor is connected with a sampling resistor through a lead, and the other end of the sampling resistor is connected with a CS pin of an LJY5203 high-efficiency LED drive control chip. The input end of the sampling resistor is connected with the filter capacitor and two GND pins of the LJY5203 high-efficiency LED drive control chip through leads.
The other pin D of the LJY5203 high-efficiency LED drive control chip is connected with an inductor through a lead, and the other end of the inductor is connected with a UV disinfection and sterilization lamp through a lead.
Furthermore, the GATE pin of the LJY5203 high-efficiency LED drive control chip is connected with an oscillation resistor through a lead, and the other end of the oscillation resistor is connected with the ROSE pin of the LJY5203 high-efficiency LED drive control chip through a lead.
Furthermore, a fast-discharge diode is arranged between the input end and the voltage-stabilizing capacitor.
Further, the input voltage of the input end is 12V direct current.
Furthermore, a D pin of the LJY5203 high-efficiency LED drive control chip is connected with a decorative lamp through a wire.
The utility model has the advantages that: simple structure, it is with low costs, can continuously provide accurate 3.1-3.5V direct current, ensure that the disinfection purification system of refrigerator can long stable operation, ensure that the disinfection purification microcirculation system of refrigerator continuously plays a role. And a constant-voltage and constant-current power supply is provided for the UV disinfection lamp, so that the service life of the disinfection lamp is ensured.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Reference numerals: 1-input end, 2-LJY5203 high-efficiency LED drive control chip, 3-decorative lamp, 4-UV disinfection lamp, 5-fast discharge diode, 6-voltage stabilizing capacitor, 7-inductor, 8-oscillating resistor, 9-sampling resistor, 10-reactor, 11-filter capacitor and 12-shell.
Detailed Description
For the convenience of understanding, the technical solution of the present invention is further described in detail below by way of embodiments with reference to the accompanying drawings:
as shown in figure 1, the constant-voltage constant-current power supply for sterilizing and purifying the refrigerator comprises a housing 12 and an LJY5203 high-efficiency LED drive control chip 2. The LJY5203 high-efficiency LED drive control chip 2 is fixedly arranged in the housing 12.
An input end 1 is arranged at one end of the shell 12, and the input voltage of the input end 1 is 12V direct current.
A voltage stabilizing capacitor 6 is arranged in parallel with the input terminal 1. A fast-discharge diode 5 is arranged between the input end 1 and the voltage-stabilizing capacitor 6.
One end of the voltage-stabilizing capacitor 6 is connected with a reactor 10 through a lead, and the other end of the reactor 10 is connected with a VDD pin of the LJY5203 high-efficiency LED drive control chip 2.
The reactor 10 and the VDD pin of the LJY5203 high-efficiency LED drive control chip 2 are connected with a filter capacitor 11 through a lead, and the other end of the filter capacitor 11 is connected with two GND pins of the LJY5203 high-efficiency LED drive control chip 2.
The other end of the voltage stabilizing capacitor 6 is connected with a sampling resistor 9 through a lead, and the other end of the sampling resistor 9 is connected with a CS pin of the LJY5203 high-efficiency LED drive control chip 2. The input end of the sampling resistor 9 is connected with the filter capacitor 11 and two GND pins of the LJY5203 high-efficiency LED drive control chip 2 through leads.
The GATE pin of the LJY5203 high-efficiency LED drive control chip 2 is connected with an oscillation resistor 8 through a lead, and the other end of the oscillation resistor 8 is connected with the ROSE pin of the LJY5203 high-efficiency LED drive control chip 2 through a lead.
One D pin of the LJY5203 high-efficiency LED driving control chip 2 is connected with a decorative lamp 3 through a wire.
The other pin D of the LJY5203 high-efficiency LED drive control chip 2 is connected with an inductor 7 through a lead, and the other end of the inductor 7 is connected with a UV disinfection and sterilization lamp 4 through a lead.
The working principle is as follows: 12V direct current is input into an input end 1, and 3.1-3.5V direct current is output from an output end through voltage reduction and rectification of a circuit to drive a UV disinfection lamp in the refrigerator to disinfect and sterilize the refrigerator. Meanwhile, 3.1-3.5V direct current voltage of cross current constant voltage is provided for the decorative lamp 3. Can continuously provide accurate 3.1-3.5V direct current, and ensure the long-term stable operation of the disinfection and purification system of the refrigerator. Ensuring the disinfection and purification micro-circulation system of the refrigerator to continuously play a role.
The above embodiments are merely illustrative or explanatory of the technical solution of the present invention, and should not be construed as limiting the technical solution of the present invention, and it is obvious that those skilled in the art can make various modifications and variations to the present invention without departing from the spirit and scope of the present invention. The present invention also includes such modifications and variations provided they come within the scope of the appended claims and their equivalents.
Claims (4)
1. A constant-voltage constant-current power supply for disinfection and purification of a refrigerator comprises a shell and an LJY5203 high-efficiency LED drive control chip, wherein the LJY5203 high-efficiency LED drive control chip is fixedly arranged in the shell;
one end of the shell is provided with an input end, a voltage stabilizing capacitor is connected with the input end in parallel, one end of the voltage stabilizing capacitor is connected with an electric reactor through a lead, and the other end of the electric reactor is connected with a VDD pin of an LJY5203 high-efficiency LED drive control chip;
the reactor and the VDD pin of the LJY5203 high-efficiency LED drive control chip are connected with a filter capacitor through a lead, and the other end of the filter capacitor is connected with two GND pins of the LJY5203 high-efficiency LED drive control chip;
the other end of the voltage stabilizing capacitor is connected with a sampling resistor through a lead, the other end of the sampling resistor is connected with a CS pin of the LJY5203 high-efficiency LED drive control chip, and the input end of the sampling resistor is connected with the filter capacitor and two GND pins of the LJY5203 high-efficiency LED drive control chip through leads;
the other pin D of the LJY5203 high-efficiency LED drive control chip is connected with an inductor through a lead, and the other end of the inductor is connected with a UV disinfection and sterilization lamp through a lead.
2. The constant-voltage constant-current power supply for sterilizing and purifying a refrigerator as claimed in claim 1, wherein: the GATE pin of the LJY5203 high-efficiency LED drive control chip is connected with an oscillation resistor through a lead, and the other end of the oscillation resistor is connected with the ROSE pin of the LJY5203 high-efficiency LED drive control chip through a lead.
3. The constant-voltage constant-current power supply for sterilizing and purifying a refrigerator as claimed in claim 1, wherein: and a fast-discharge diode is arranged between the input end and the voltage-stabilizing capacitor.
4. The constant-voltage constant-current power supply for sterilizing and purifying a refrigerator as claimed in claim 1, wherein: one D pin of the LJY5203 high-efficiency LED drive control chip is connected with a decorative lamp through a wire.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921899257.XU CN210899750U (en) | 2019-11-05 | 2019-11-05 | Constant-voltage constant-current power supply for sterilizing and purifying refrigerator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921899257.XU CN210899750U (en) | 2019-11-05 | 2019-11-05 | Constant-voltage constant-current power supply for sterilizing and purifying refrigerator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210899750U true CN210899750U (en) | 2020-06-30 |
Family
ID=71324273
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921899257.XU Active CN210899750U (en) | 2019-11-05 | 2019-11-05 | Constant-voltage constant-current power supply for sterilizing and purifying refrigerator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210899750U (en) |
-
2019
- 2019-11-05 CN CN201921899257.XU patent/CN210899750U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101672558A (en) | Refrigerator with timing and alarming functions during opening door | |
| CN210899750U (en) | Constant-voltage constant-current power supply for sterilizing and purifying refrigerator | |
| CN203068911U (en) | Food fresh-keeping device | |
| CN102905415A (en) | LED (Light Emitting Diode) driving power supply without electrolytic capacitors | |
| CN208832833U (en) | The Modular refrigerator of function combination | |
| CN201503817U (en) | Improved control loop of electronic contactor | |
| CN111110904A (en) | Portable ultraviolet sterilization lamp | |
| CN205030658U (en) | Novel domestic medicine box | |
| CN202455167U (en) | CT (computerized tomography) power taking circuit | |
| CN110595146A (en) | Control system for refrigeration house and refrigerator | |
| CN201759886U (en) | Full-automatic intermittent circulation type ozone sterilization deodorizer in refrigerator | |
| CN203493963U (en) | Adjustable ion sterilization system and refrigerator thereof | |
| CN113100631B (en) | Sterilization control system and sterilization control method of water dispenser | |
| CN213694230U (en) | Human infrared induction intelligence LED lithium cell lamps and lanterns | |
| CN210573314U (en) | Control circuit of ozone generator | |
| CN211962680U (en) | Portable ultraviolet sterilization lamp | |
| CN201527149U (en) | Refrigerator provided with magnetic field optical wave sterilizing fresh-keeping device | |
| CN203898791U (en) | Light-wave energy purification system used on purifier | |
| CN212512024U (en) | Refrigerating and sterilizing integrated machine | |
| CN208141192U (en) | Fish tank oxygen increasing machine work automatic controller | |
| CN209526651U (en) | A kind of high-precision high voltage pulse power | |
| CN203057586U (en) | An energy-saving lamp circuit system | |
| CN204629903U (en) | A kind of novel intelligent automatic air humidifier for family life | |
| CN203550411U (en) | Door opening alarming circuit for mechanically-controlled refrigerator | |
| CN210518925U (en) | Light emitting diode lighting driving circuit, semiconductor chip and lighting device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |