CN201319151Y - Refrigeration switch power supply for drinking fountain - Google Patents
Refrigeration switch power supply for drinking fountain Download PDFInfo
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- CN201319151Y CN201319151Y CNU2008202045242U CN200820204524U CN201319151Y CN 201319151 Y CN201319151 Y CN 201319151Y CN U2008202045242 U CNU2008202045242 U CN U2008202045242U CN 200820204524 U CN200820204524 U CN 200820204524U CN 201319151 Y CN201319151 Y CN 201319151Y
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- water temperature
- power supply
- circuit
- temperature sensing
- switching power
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Abstract
The utility model relates to a refrigeration switch power supply for a drinking fountain. The utility model is characterized in that the refrigeration switch power supply for a drinking fountain is formed by connecting a switch power supply circuit and a water temperature sensing circuit, wherein the voltage output end of the switch power supply circuit is connected with the voltage input end of the water temperature sensing circuit; the signal output end of the water temperature sensing circuit is connected with the feedback signal input end of the switch power supply circuit; the water temperature sensing circuit detects the water temperature and generates a voltage output signal and sends the voltage output signal to the feedback signal input end of the switch power supply circuit; and the control unit of the switch power supply circuit controls the on and off of the voltage output end according to the received voltage signal. The utility model has concise circuit, increases extremely low cost compared with a universal switch power supply, realizes the electric contactless switch, prolongs the service life of the drinking fountain and increases the working efficiency.
Description
Technical field
The utility model is a kind of cold water of drinking machine Switching Power Supply, particularly relates to a kind of Switching Power Supply that can change duty with water temperature.Belong to the water dispenser power technique fields.
Background technology
Existing water dispenser refrigeration power supply is universal configuration switches power supply, its refrigeration work voltage temperature controlling of not freezed.But in actual applications,, enter keeping warm mode this moment when water temperature reaches certain low temperature level, in the time of need stopping to freeze, just cuts off the refrigeration power supply.When water temperature is warming up to uniform temperature, connect the refrigeration power supply again.So circulation, the refrigeration power supply is in the circulation switching state of connection-cut-out.In the prior art, generally adopt mechanical switch structure to switch the refrigeration power supply source,, have the short defective of life time, thereby influence water dispenser mission life and work efficiency because mechanical switch structure easily produces the fatigability fault in frequent handoff procedure.
The utility model content
The purpose of this utility model is to exist mission life to shorten and ineffective shortcoming in order to overcome the existing mechanical construction of switch, and a kind of cold water of drinking machine Switching Power Supply is provided.
The purpose of this utility model can reach by taking following technical scheme:
A kind of cold water of drinking machine Switching Power Supply, its design feature is: connected to form by switching power circuit and water temperature sensing circuit; The voltage output end of switching power circuit connects the voltage input end of water temperature sensing circuit, and the signal output part of water temperature sensing circuit connects the feedback signal input end with switching power circuit; The water temperature sensing circuit is delivered to the feedback signal input end of switching power circuit by detecting water temperature and producing the voltage output signal, and the control module of switching power circuit is controlled the on-off of voltage output end according to the voltage signal that receives.
Switching power circuit output produces an internal reference voltage, this internal reference voltage provides reference voltage for the water temperature sensing circuit, when water dispenser water temperature and environment temperature reached certain deviation, the output of the output control switch power supply of water temperature sensing circuit changed.
A kind of embodiment of the present utility model is: switching power circuit can be formed by connecting by rectifier bridge, switching tube, transformer, output rectification unit, feedback sample unit and PWM control module; Rectifier bridge, switching tube, transformer and output rectification unit are electrically connected in proper order, the input end of two output terminals difference feedback sample unit of output rectification unit and the voltage input end of water temperature sensing circuit, the output terminal of feedback sample unit is by the control input end of PWM control module connection switching tube, and the feedback input end of feedback sample unit connects the signal output part of water temperature sensing circuit.
A kind of embodiment of the present utility model is: the inside voltage stabilizing reference voltage source that described water temperature sensing circuit can be made up of current-limiting resistance R27 and zener diode ZD3, by the water temperature identification circuit that temperature sensor, balance resistance RJ5, switching tube Q4 form, filter capacitor capacitor C 16, driving resistor R34, balance resistance RJ4 and linear regulator U03 form.
A kind of embodiment of the present utility model is: the inside voltage stabilizing reference voltage source that described water temperature sensing circuit can be made up of current-limiting resistance R27 and zener diode ZD3, by the water temperature identification circuit that temperature sensor, balance resistance RJ5, switching tube Q4 form, filter capacitor capacitor C 16, driving resistor R34, linear optical coupling U02A and resistance R 18, R26 form.
A kind of embodiment of the present utility model is: described temperature sensor can be made of negative tempperature coefficient thermistor NTC or posistor PTC.
The beneficial effects of the utility model are:
The utility model comprises switching power circuit and water temperature sensing circuit, and the water temperature sensing circuit provides transducing signal by temperature sensor, and when water dispenser water temperature and environment temperature reached certain deviation, the output of control switching changed.With compared with prior art, this circuit has following effect: 1, circuit is succinct, with respect to Universal Switching Power Supply, cost increases few.2, realize the oncontacting electric switch, prolonged water dispenser serviceable life and improved work efficiency.
After the water dispenser process of refrigerastion enters keeping warm mode, need not switch block and switch, the duty of Switching Power Supply is changed, have the characteristics that prolong and provide work efficiency serviceable life that make water dispenser.
Figure of description
Fig. 1 is a water temperature sensing circuit schematic diagram of the present utility model.
Fig. 2 is the theory diagram of switching power circuit.
Fig. 3 is the circuit theory diagrams of specific embodiment of the utility model 1.
Fig. 4 is the circuit theory diagrams of specific embodiment of the utility model 2.
Embodiment
Specific embodiment 1:
See figures.1.and.2, present embodiment comprises switching power circuit and water temperature sensing circuit; The signal output part of described switching power circuit is connected with the signal input part of water temperature sensing circuit, and a signal output part of described water temperature sensing circuit is connected with a signal input part of described switching power circuit.The inside voltage stabilizing reference voltage source that described water temperature sensing circuit is made up of current-limiting resistance R27 and zener diode ZD3, by the water temperature identification circuit that temperature sensor, balance resistance RJ5, switching tube Q4 form, filter capacitor capacitor C 16, driving resistor R34, balance resistance RJ4 and linear regulator U03 form.Described temperature sensor is made of negative tempperature coefficient thermistor NTC.
With reference to Fig. 2, described switch power supply route rectifier bridge, switching tube, transformer, output rectification unit, feedback sample unit and PWM control module are formed, described rectifier bridge, switching tube, transformer, output rectification unit connect successively, and a signal output part of output rectification unit is connected with a signal input part of switching tube with the PWM control module by the feedback sample unit.
The principle of work of present embodiment:
With reference to Fig. 3, current-limiting resistance R27 and zener diode ZD3 form inner voltage stabilizing reference voltage source, electric current enters current-limiting resistance R27 and zener diode ZD3 by the output of Switching Power Supply, is regulated by voltage stabilizing diode ZD3 when output voltage fluctuates, and the voltage that makes V1 order keeps stable.The water temperature identification circuit is made up of temperature sensor NTC, balance resistance RJ5, switching tube Q4.Wherein capacitor C 16 is a filter capacitor, suppresses high frequency interference; Resistance R 34 is a driving resistor, for opening of triode provides current path.When water temperature is room temperature (25 ℃), mid-point voltage＜0.7V of NTC and RJ5, switching tube Q4 is in off state, and sensor is the output of control switching not, the cooling piece operate as normal.When water temperature drops near the setting value (12 ℃), mid-point voltage 〉=0.7V of NTC and RJ5, switching tube Q conducting, A, the K level electric current of linear regulator U03 are increased, make Switching Power Supply feedback regulating circuit out of trim, thus control switching output, and cooling piece quits work.When water temperature is gone up (〉=15 ℃), mid-point voltage＜0.7V of NTC and RJ5, Q4 turn-offs, the Switching Power Supply operate as normal, cooling piece begins refrigeration.
Specific embodiment 2:
With reference to Fig. 4, the characteristics of present embodiment are: the inside voltage stabilizing reference voltage source that described water temperature sensing circuit is made up of current-limiting resistance R27 and zener diode ZD3, by the water temperature identification circuit that temperature sensor NTC, balance resistance RJ5, switching tube Q4 form, filter capacitor capacitor C 16, driving resistor R34, linear optical coupling U02A and resistance R 18, R26 form.Other are identical with specific embodiment 1.
Principle of work:
When temperature sensor was room temperature (25 ℃) in water temperature, Q4 turn-offed, the Switching Power Supply operate as normal, and cooling piece continues refrigeration; When water temperature reached design temperature (12 ℃), the Q4 conducting increased the electric current of linear optical coupling, and the main switch ON time of control switching reduces, thereby makes switch power source output voltage reduce, and cooling piece quits work.When temperature recovery, process is opposite.
Specific embodiment 3:
The characteristics of present embodiment are: described temperature sensor is posistor PTC.Other are identical with specific embodiment 1 or 2.
Claims (5)
1, a kind of cold water of drinking machine Switching Power Supply is characterized in that: connected to form by switching power circuit and water temperature sensing circuit; The voltage output end of switching power circuit connects the voltage input end of water temperature sensing circuit, and the signal output part of water temperature sensing circuit connects the feedback signal input end with switching power circuit; The water temperature sensing circuit is delivered to the feedback signal input end of switching power circuit by detecting water temperature and producing the voltage output signal, and the control module of switching power circuit is controlled the on-off of voltage output end according to the voltage signal that receives.
2, a kind of refrigerating drinker Switching Power Supply according to claim 1, it is characterized in that: switch power supply route rectifier bridge, switching tube, transformer, output rectification unit, feedback sample unit and PWM control module are formed by connecting; Rectifier bridge, switching tube, transformer and output rectification unit are electrically connected in proper order, the input end of two output terminals difference feedback sample unit of output rectification unit and the voltage input end of water temperature sensing circuit, the output terminal of feedback sample unit is by the control input end of PWM control module connection switching tube, and the feedback input end of feedback sample unit connects the signal output part of water temperature sensing circuit.
3, a kind of refrigerating drinker Switching Power Supply according to claim 1, it is characterized in that: the inside voltage stabilizing reference voltage source that described water temperature sensing circuit is made up of current-limiting resistance R27 and zener diode ZD3, by the water temperature identification circuit that temperature sensor, balance resistance RJ5, switching tube Q4 form, filter capacitor capacitor C 16, driving resistor R34, balance resistance RJ4 and linear regulator U03 form.
4, a kind of refrigerating drinker Switching Power Supply according to claim 1, it is characterized in that: the inside voltage stabilizing reference voltage source that described water temperature sensing circuit is made up of current-limiting resistance R27 and zener diode ZD3, by the water temperature identification circuit that temperature sensor, balance resistance RJ5, switching tube Q4 form, filter capacitor capacitor C 16, driving resistor R34, linear optical coupling U02A and resistance R 18, R26 form.
5, according to claim 3 or 4 described a kind of refrigerating drinker Switching Power Supplies, it is characterized in that: described temperature sensor is made of negative tempperature coefficient thermistor NTC or posistor PTC.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008202045242U CN201319151Y (en) | 2008-12-02 | 2008-12-02 | Refrigeration switch power supply for drinking fountain |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008202045242U CN201319151Y (en) | 2008-12-02 | 2008-12-02 | Refrigeration switch power supply for drinking fountain |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201319151Y true CN201319151Y (en) | 2009-09-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008202045242U Expired - Fee Related CN201319151Y (en) | 2008-12-02 | 2008-12-02 | Refrigeration switch power supply for drinking fountain |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201319151Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106406385A (en) * | 2016-08-25 | 2017-02-15 | 珠海格力电器股份有限公司 | Switching power supply, feedback control circuit and method thereof and water dispenser |
| CN107367069A (en) * | 2017-06-30 | 2017-11-21 | 邹彦双 | A kind of air-source water heater voltage regulating and controlling circuit |
| CN110986424A (en) * | 2019-12-16 | 2020-04-10 | 佛山零度电器有限公司 | Low-power-consumption refrigerating sheet system |
-
2008
- 2008-12-02 CN CNU2008202045242U patent/CN201319151Y/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106406385A (en) * | 2016-08-25 | 2017-02-15 | 珠海格力电器股份有限公司 | Switching power supply, feedback control circuit and method thereof and water dispenser |
| CN106406385B (en) * | 2016-08-25 | 2019-01-29 | 珠海格力电器股份有限公司 | A kind of feedback control circuit of Switching Power Supply, method, Switching Power Supply and water dispenser |
| CN107367069A (en) * | 2017-06-30 | 2017-11-21 | 邹彦双 | A kind of air-source water heater voltage regulating and controlling circuit |
| CN107367069B (en) * | 2017-06-30 | 2018-06-26 | 佛山市顺德区约利节能设备有限公司 | A kind of air-source water heater voltage regulating and controlling circuit |
| CN110986424A (en) * | 2019-12-16 | 2020-04-10 | 佛山零度电器有限公司 | Low-power-consumption refrigerating sheet system |
| CN110986424B (en) * | 2019-12-16 | 2021-08-27 | 佛山零度电器有限公司 | Low-power-consumption refrigerating sheet system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: GUANGDONG REAL-DESIGN INTELLIGENT TECHNOLOGY CO., Free format text: FORMER NAME: FOSHAN SHUNDE REALDESIGN ELECTRONICS INDUSTRY CO., LTD. |
|
| CP03 | Change of name, title or address |
Address after: 528300 Shunde, Guangdong, Daliang Industrial Park, Fengxiang, Xiang Xiang Road, No. 1 Patentee after: GUANGDONG REAL-DESIGN INTELLIGENT TECHNOLOGY CO., LTD. Address before: 528300 Guangdong province Foshan city Shunde District Daliang Industrial Park Fengxiang Huaye Road No. 1 Patentee before: Foshan Shunde Realdesign Electronics Industry Co., Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090930 Termination date: 20151202 |
|
| EXPY | Termination of patent right or utility model |