CN2544321Y - Power source for refrigerated water dispenser - Google Patents

Abstract

The utility model relates to a power supply for a refrigerating drinking machine, which comprises a universal power supply for the drinking machine. A water temperature setting bridge is arranged between a reference power supply and a water temperature judging circuit which are arranged in the power supply, the output end of the water temperature setting bridge is connected with the input end of the water temperature judging circuit; then the refrigerating state of drinking water is regulated; in order to keep a proper temperature difference between the drinking water and the environment, either bridge arm of the water temperature setting bridge is connected with an environment temperature sensor. The utility model has the benefit effects of concise circuit, low cost, energy conservation and good taste of the provided drinking water.

Description

The power supply that a kind of refrigerating drinker is used

Technical field

The utility model relates to the water dispenser power technique fields, and particularly a kind of potable water that freezes can keep the refrigerating drinker power supply of the corresponding temperature difference with environment temperature.

Background technology

Existing a kind of refrigerating drinker power supply is set bridge (C by reference power supply (Vref), water temperature ₁), water temperature decision circuitry (IC), voltage transitions and control circuit (C ₃) and refrigeration device (C ₄) constitute, water temperature is set bridge (C ₁) by resistance (R ₁, R ₂, R ₃), water temperature detects thermistor (R _TC1) form, referring to Fig. 1, shown in Figure 2.When water temperature decision circuitry (IC) detects actual water temperature and is lower than the water temperature setting value, voltage transitions and control circuit (C ₃) lower or no-voltage of output gives refrigeration device (C ₄), make the water dispenser refrigerating part be in weak refrigerating state, or be called keeping warm mode.

Above-mentioned water dispenser desired temperature is fixed, and is generally 8-12 ℃.Therefore, the Chilled Drinking Water water temperature of water dispenser is fixed substantially.When environment temperature was higher, mouthfeel was too cool; When environment temperature was low, mouthfeel was iced inadequately.As seen, the potable water water temperature of above-mentioned water dispenser can not keep the corresponding temperature difference with environment temperature, thereby influences mouthfeel.When environment temperature was higher, cooling time was long on the other hand, wasted energy.

Summary of the invention

The power supply that provides a kind of refrigerating drinker simple in structure, lower-cost to use is provided the technical problems to be solved in the utility model, and it can make the potable water water temperature of water dispenser and environment temperature keep the corresponding temperature difference.

Technical solution of the present utility model is such: the power supply that a kind of refrigerating drinker is used, comprise general water dispenser power supply, be provided with between this power supply internal reference power supply and the water temperature decision circuitry by resistance and water temperature and detect the water temperature setting bridge that thermistor is formed, this water temperature is set the bridge output terminal and is inserted water temperature decision circuitry input end, refrigerating state to potable water is controlled, and inserts environment temperature sensor in arbitrary brachium pontis of described water temperature setting bridge.Described environment temperature sensor is posistor (PTC) or negative tempperature coefficient thermistor (NTC) or conductor temperature Sensitive Apparatus.Described environment temperature sensor and water temperature are set that the resistance of arbitrary brachium pontis in the bridge or water temperature detect that thermistor be connected in series or and are connect or go here and there also hybrid junction.

Principle of work of the present utility model is referring to shown in Figure 3, and water temperature is set bridge by resistance (R ₁, R ₂, R ₃), water temperature detects thermistor (R _TC1), environment temperature detects thermistor (R _TC2) form.Under 25 ℃ of conditions of standard ambient temperature, the water temperature setting value be generally 12 ℃ or near.When water temperature descended, water temperature detected thermistor (R _TC1) resistance changes, when reaching $\frac{\mathrm{<figure-callout\; id="3"\; label="R"\; filenames="Y0222770800081.png"\; state="\{\{state\}\}">R</figure-callout>}3}{\mathrm{RTC}1}=\frac{R1}{R2+\mathrm{RTC}2}$ The time, the water temperature decision circuitry begins to change output state, the refrigerating state generation respective change of water dispenser.

When variation of ambient temperature, environment temperature detects resistance (R _TC2) the resistance change, the corresponding change of water temperature setting value.

Especially, when environment temperature raise, environment temperature detected negative tempperature coefficient thermistor (R _TC2) resistance reduce.At this moment, as water temperature detection negative tempperature coefficient thermistor (R _TC1) resistance hour, just can reach $\frac{\mathrm{<figure-callout\; id="3"\; label="R"\; filenames="Y0222770800081.png"\; state="\{\{state\}\}">R</figure-callout>}3}{\mathrm{RTC}1}=\frac{R1}{R2+\mathrm{RTC}2}$ Condition, water temperature decision circuitry output state changes, the refrigeration system of water dispenser enters weak refrigeration or keeping warm mode.That is to say that when environment temperature was higher, the also corresponding raising of the Chilled Drinking Water water temperature of water dispenser made it to keep the corresponding temperature difference with environment temperature.

Compared with prior art, the utlity model has following beneficial effect:

(1) circuit is succinct.Only need add environment temperature sensor in the water temperature initialization circuit of general water dispenser power supply gets final product.

(2) cost is low.Only increase an element cost.

(3) when temperature uses than low country, the automatic corresponding reduction of the potable water water temperature of water dispenser meeting, mouthfeel is cool; When used in the higher area of temperature, the corresponding raising of potable water water temperature can be shortened cooling time, can prolong temperature retention time again, energy savings, and mouthfeel is better simultaneously.

Description of drawings

Fig. 1 is existing a kind of electronic cooling water dispenser power supply block scheme.

Fig. 2 is the circuit theory diagrams that water temperature shown in Figure 1 is set bridge.

Fig. 3 is the circuit theory diagrams that water temperature of the present utility model is set bridge.

Fig. 4 is embodiment circuit theory diagrams of the present utility model.

Fig. 5 is the circuit theory diagrams of the 2nd embodiment of the present utility model.

Fig. 6 is the circuit theory diagrams of the 3rd embodiment of the present utility model.

Fig. 7 is the circuit theory diagrams of the 4th embodiment of the present utility model.

Embodiment

By following embodiment the utility model is further elaborated.

Embodiment 1:

Referring to shown in Figure 4, this example is made up of existing water dispenser power supply and external environment temperature sensor.Existing water dispenser power supply is set bridge (resistance R by DC power supply (AC/DC), water temperature ₁, R ₃, R ₃, thermistor NTC ₁), water temperature decision circuitry (IC), strong and weak refrigerating state change-over circuit (resistance R ₄, triode T ₁, relay R Y) form.Described external environment temperature sensor adopts thermistor NTC2.

Resistance R 2 and thermistor (NTC ₂) after the series connection again with resistance (R ₁, R ₂, R ₃), water temperature detects thermistor (NTC ₁) composition water temperature initialization circuit.

When environment temperature was low, thermistor NTC2 resistance was bigger, and A point current potential is higher, and promptly the water temperature setting value is than normal value (as 12 ℃) lower (as 8 ℃).Have only when the standing definite value of potable water water temperature calibration is lower, water dispenser just can enter weak refrigerating state or keeping warm mode.

Embodiment 2:

Referring to shown in Figure 5, this routine described water dispenser power supply by the patent No. is: Switching Power Supply and environment temperature sensor NTC that the disclosed a kind of temperature self-adaptation water dispenser of ZL01235750.2 utility model patent is used ₃Form.

Resistance (R ₁₀, R ₁₁, R ₁₂, R ₁₃), thermistor (NTC ₁, NTC ₂) and thermistor (NTC ₃) form the water temperature initialization circuit together.

When environment temperature was low, thermistor NTC3 resistance was big, integrated circuit (IC) (15) pin voltage is higher.Has only the water temperature of working as than normal value (as 12 ℃) lower (as 8 ℃), thermistor (NTC ₁) when resistance is big, switch power source output voltage V ₀Ability step-down, water dispenser enter weak refrigerating state or keeping warm mode.

When environment temperature is higher, then take place and above-mentioned opposite process.

Embodiment 3:

Referring to shown in Figure 6, this routine water temperature is set bridge by resistance (R ₁, R ₂, R ₃, R ₄), posistor (PTC), negative tempperature coefficient thermistor (NTC ₁) form.Posistor (PTC) is used for the testing environment temperature, negative tempperature coefficient thermistor (NTC ₁) be used to detect water temperature.

When environment temperature was low, thermistor (PTC) resistance reduced, and A point current potential raises.Have only when water temperature is low, detect the thermistor (NTC of water temperature ₁) resistance is bigger, switch power source output voltage V0 just changes.When environment temperature was higher, process was opposite.

Embodiment 4:

Referring to shown in Figure 7, this routine water temperature initialization circuit is by resistance (R ₁₀, R ₁₁, R ₁₂, R ₁₃), thermistor (NTC ₁, NTC ₂) form.Thermistor (NTC ₁) be used to detect water temperature, another thermistor (NTC ₂) be used for the testing environment temperature.

When environment temperature is low, thermistor (NTC ₂) resistance is bigger, under identical water temperature condition, makes B point current potential descend.Have only when water temperature during, just can make B point current potential rise to the potential value that A is ordered, switch power source output voltage V than normal value (as 12 ℃) lower (as 8 ℃) ₀Just change.When environment temperature was higher, process was opposite.

Claims (3)

1, the power supply used of a kind of refrigerating drinker, comprise general water dispenser power supply, be provided with between this power supply internal reference power supply and the water temperature decision circuitry by resistance and water temperature and detect the water temperature setting bridge that thermistor is formed, this water temperature is set the bridge output terminal and is inserted water temperature decision circuitry input end, refrigerating state to potable water is controlled, and it is characterized in that: insert environment temperature sensor in arbitrary brachium pontis of described water temperature setting bridge.

2, the power supply of refrigeration drinking-water usefulness according to claim 1, it is characterized in that: described environment temperature sensor is posistor (PTC) or negative tempperature coefficient thermistor (NTC) or conductor temperature Sensitive Apparatus.

3, the power supply of refrigeration according to claim 1 drinking-water usefulness is characterized in that: described environment temperature sensor and water temperature are set that the resistance of arbitrary brachium pontis in the bridge or water temperature detect that thermistor is connected in series or and are connect or go here and there also hybrid junction.

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