CN201033016Y - Drinking machine water deficiency auto-power-off protective equipment - Google Patents
Drinking machine water deficiency auto-power-off protective equipment Download PDFInfo
- Publication number
- CN201033016Y CN201033016Y CNU200720022816XU CN200720022816U CN201033016Y CN 201033016 Y CN201033016 Y CN 201033016Y CN U200720022816X U CNU200720022816X U CN U200720022816XU CN 200720022816 U CN200720022816 U CN 200720022816U CN 201033016 Y CN201033016 Y CN 201033016Y
- Authority
- CN
- China
- Prior art keywords
- water
- relay
- power supply
- power
- water dispenser
- 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.)
- Expired - Fee Related
Links
Landscapes
- Control Of Resistance Heating (AREA)
Abstract
The utility model relates to a control circuit in the field of electric heating, in particular to an auto-power off device for water fountain lacking of water. The technical scheme is that: a power supply circuit is compose of a transformer B, a rectifying block DZ and a capacitance C; a water-level detecting control circuit consists of a resistance R, a water-level sensor M, a dynatron T and a relay J; a normally closed contact J-1 of the relay is connected in series with the electric heater JR of the main circuit. The utility model has the advantages of simple structure and convenient retrofitting, and is able to be installed in front of the power supply of the heating pipe in water fountain to prevent the burning out of the heating pipe in water fountain by cutting off the power supply even if the water is used up but not be detected early enough.
Description
Technical field
The utility model relates to the control circuit of field of electric heating, specifically is a kind of water dispenser lack of water automatic power-off protection device.
Background technology
The present family or the water dispenser of office have only temperature-control circuit, and do not have the lack of water automatic shutdown circuitry, do not have to find just might burn the heating tube of water dispenser in case inner bucket water is used up.
The utility model content
The purpose of this utility model is exactly the defective that exists at prior art, and the water dispenser lack of water power-off protection apparatus of realizing automatic power-off protection under a kind of water dispenser lack of water situation is provided.
Its technical scheme is: form power supply circuits by transformer B, rectifying block DZ, capacitor C; Form the water level detecting and controlling circuit by resistance R, level sensor M, triode T, relay J; The normally-closed contact J-1 of relay J is connected on the electric heater JR in the main circuit.
The utlity model has simple in structure, install additional conveniently, be installed in the heating tube power supply of water dispenser before, can use up and the effect of powered-down when not finding at water, play the heating tube purpose of safety that prevents to burn water dispenser.
Description of drawings
Accompanying drawing is the circuit theory diagrams of a kind of embodiment.A, N are attaching plugs among the figure; JR is the electric heater of water dispenser.
The specific embodiment:
Be further described with regard to its circuit formation and operation principle below in conjunction with accompanying drawing:
Transformer B connects rectifying block DZ, capacitor C is formed power supply circuits; Triode T connects resistance R, level sensor M, relay J composition water level detecting and controlling circuit; The normally-closed contact J-1 of relay J is connected in the main circuit on the electric heater JR, at the two ends of relay J parallel diode D.
When water dispenser was worked, during lack of water, level sensor M did not connect, and triode T ends, not adhesive of relay J, and the normally-closed contact J-1 of relay J remains closed, the water dispenser operate as normal; When lack of water appearred in water dispenser, level sensor M disconnected, triode T conducting, and the relay J adhesive, the normally-closed contact J-1 of relay J disconnects, and the heating tube power supply of water dispenser will be closed.Thereby realize the purpose of automatic disconnection power supply electricity.
Claims (2)
1. a water dispenser lack of water automatic power-off protection device comprises power switch (K), transformer (B), rectifying block (DZ), electric capacity (C) composition power supply circuits; It is characterized in that: the output connection at power supply circuits is formed the water level detecting and controlling circuit by resistance (R), level sensor (M), triode (T), relay (J); The normally-closed contact (J-1) of relay (J) is connected on the electric heater (JR) in the main circuit.
2. water dispenser lack of water automatic power-off protection device according to claim 1 is characterized in that: at the two ends parallel diode (D) of relay (J).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200720022816XU CN201033016Y (en) | 2007-05-29 | 2007-05-29 | Drinking machine water deficiency auto-power-off protective equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200720022816XU CN201033016Y (en) | 2007-05-29 | 2007-05-29 | Drinking machine water deficiency auto-power-off protective equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201033016Y true CN201033016Y (en) | 2008-03-12 |
Family
ID=39193908
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU200720022816XU Expired - Fee Related CN201033016Y (en) | 2007-05-29 | 2007-05-29 | Drinking machine water deficiency auto-power-off protective equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201033016Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101721138B (en) * | 2008-10-15 | 2013-01-02 | 优格斯特/弗里斯马格股份公司 | Electric beverage making machine comprising control unit |
| CN105078247A (en) * | 2015-08-31 | 2015-11-25 | 南丹县人民医院 | Water drinking machine |
-
2007
- 2007-05-29 CN CNU200720022816XU patent/CN201033016Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101721138B (en) * | 2008-10-15 | 2013-01-02 | 优格斯特/弗里斯马格股份公司 | Electric beverage making machine comprising control unit |
| CN105078247A (en) * | 2015-08-31 | 2015-11-25 | 南丹县人民医院 | Water drinking machine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |