CN204512524U - A kind of constant temp gas water heater valve body - Google Patents
A kind of constant temp gas water heater valve body Download PDFInfo
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- CN204512524U CN204512524U CN201420832125.6U CN201420832125U CN204512524U CN 204512524 U CN204512524 U CN 204512524U CN 201420832125 U CN201420832125 U CN 201420832125U CN 204512524 U CN204512524 U CN 204512524U
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- gas
- valve core
- valve
- valve body
- water heater
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Abstract
The utility model discloses a kind of constant temp gas water heater valve body, comprise valve body body, valve body body comprises air valve body, gas valve core, air valve body is connected with admission line, admission line is provided with can the solenoid valve of switch admission line, the valve pocket hole of round taper hole structure is offered in gas valve core, gas valve core is the conical round table structure corresponding with valve pocket hole, valve pocket hole side opening is provided with gas outlet, gas valve core offers at least one circumference distribution and the vent corresponding with gas outlet, gas valve core is driven by valve core rotation driving mechanism and rotates, thus realize the function being communicated with vent and gas outlet or shutoff gas outlet, and compress gas valve core by elastic devices such as springs, gas valve core and valve pocket hole can closely cooperate, make the gap between gas valve core and valve pocket hole negligible, ensure the sealability of valve body, the one-way of valve body is guaranteed, and the degree of regulation of gas valve core is higher more reliable.
Description
Technical field
The utility model relates to a kind of constant temp gas water heater valve body being applied to gas water-heater.
Background technique
At present, domestic constant temp gas water heater realizing automatic regulation of gas mainstream technology, comprises gas ratio valve regulating the qi flowing in the channels and stepper motor regulating the qi flowing in the channels two kinds, wherein gas ratio valve system cost is higher, and although stepper motor regulating the qi flowing in the channels mode cost is lower, existing defects in performance, affects constant temperature effect.
The feature of stepper motor regulating the qi flowing in the channels mode Thermostatic water heaters: on existing water vapor linked valve architecture basics, adopts stepper motor to drive gas valve core, and automatical control system, according to the change of water-exit temperature, adjusts gas valve core, realizes constant temperature by throttling adjustment amount of consumed gas.In fact this constant temperature machine, simulates the manual temperature adjustment process of ordinary strong exhaust water heater exactly and realizes constant temperature, product structure advantage of lower cost.
From existing product structure, in water vapor linked valve, gas valve core is cylindric, and adopts Spielpassung between air valve body matching hole.In process of producing product, this gap is difficult to control: excesssive gap, gap air leak amount may be caused excessive, affect regulating effect; Improve accuracy of manufacturing, be difficult to make a breakthrough under existing production specifications, certainly will impact cost of production simultaneously, also not meet requirements of mass production.
For this problem, there is producer on stepper motor constant temperature product, on also carried out some improve: add seal with elastometic washer in the bottom of gas valve core, intercept air-flow after being led to regulating spool by above-mentioned gap from valve body hole bottom, but to gas valve core macropore, to lead to air-flow after regulating spool by matching gap just helpless, more fatal is, this gap air leak amount, itself be irregular, relevant to often overlapping the factor such as valve body and the supporting situation of spool, angle of swing, sense of rotation, cannot anticipation, more can not control.
This defect is when conventional products manual temperature, and impact is also not obvious, but when stepper motor automatic temperature-control, has just become critical defect, can be described as mentality of designing defect, is difficult to make up.The situation that may occur: water heater temperature adjustment, when automatically controlled judgement gas quantity need increase, stepper motor strengthens gas valve core aperture by normal design, but may reduce due to actual gap, and gas supply amount reduces on the contrary; Further increasing gas quantity, may occur that again gas supply amount is too much; Controller starts again to reduce spool aperture, affects equally by gap, may occur that again gas supply amount is very few, and due to direction of motor rotation change, cause the change of gas valve core Impact direction, gap possibility contrary to previous state is very large; So repeatedly, cause water-exit temperature to fluctuate always, can not constant temperature, the life-span of control system is also affected simultaneously.
By technical term, regulating system does not possess one-way, is not suitable for automatic adjustment.
Affect by above matching gap equally, water heater minimal temperature rise is difficult to control, and can only adopt the several fire row blast tube of closed electromagnetic valve, artificially fix a minimal temperature rise, occurs minimal temperature rise thus and automatically regulate temperature range to exist out of stock.
Summary of the invention
In order to overcome the deficiencies in the prior art, the utility model provides a kind of constant temp gas water heater valve body.
The utility model solves the technological scheme that its technical problem adopts:
A kind of constant temp gas water heater valve body, comprise valve body body, described valve body body comprises air valve body, gas valve core, described air valve body is connected with an admission line, described admission line is provided with can the solenoid valve of switch admission line, the valve pocket hole of round taper hole structure is offered in described gas valve core, described gas valve core is a conical round table structure corresponding with valve pocket hole, described valve pocket hole side opening is provided with gas outlet, described gas valve core offers at least one circumference distribution and the vent corresponding with gas outlet, described gas valve core is driven by a valve core rotation driving mechanism and rotates, and described gas valve core is compacted in valve pocket hole by an elastic device.
Described elastic device is spring, and the gas valve core of described conical round table structure is provided with a coupling shaft, and described spring housing is located on this coupling shaft, and described spring one end top is pressed on gas valve core, and its other end top is pressed in air valve body inwall.
Described valve core rotation driving mechanism is a gear drive, and it comprises the gearwheel be connected with spool, the small gear engaged with gearwheel and stepper motor, and the output shaft of described stepper motor is connected with small gear.
Described air valve body is provided with a fixed plate, described stepper motor is fixed on this fixed plate.
Described vent is circular port or grooved hole, or the combination in circular port and grooved hole.
The beneficial effects of the utility model are: a kind of constant temp gas water heater valve body, comprise valve body body, described valve body body comprises air valve body, gas valve core, described air valve body is connected with an admission line, described admission line is provided with can the solenoid valve of switch admission line, the valve pocket hole of round taper hole structure is offered in described gas valve core, described gas valve core is a conical round table structure corresponding with valve pocket hole, described valve pocket hole side opening is provided with gas outlet, described gas valve core offers at least one circumference distribution and the vent corresponding with gas outlet, described gas valve core is driven by a valve core rotation driving mechanism and rotates, thus realize the function being communicated with vent and gas outlet or shutoff gas outlet, and compress gas valve core by elastic devices such as springs, gas valve core and valve pocket hole by after Vehicle Processing again abrasive process can closely cooperate, make the gap between gas valve core and valve pocket hole negligible, ensure the sealability of valve body, gap air leak in original design is not just present in substantially, the one-way of valve body is guaranteed, and the degree of regulation of gas valve core is higher more reliable.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the utility model is further illustrated.
Fig. 1 is generalized section of the present utility model.
Embodiment
With reference to Fig. 1, Fig. 1 is the generalized section of the utility model specific embodiment, as shown in the figure, a kind of constant temp gas water heater valve body, comprise valve body body, described valve body body comprises air valve body 1, gas valve core 2, described air valve body 1 is connected with an admission line 3, described admission line 3 is provided with can the solenoid valve 4 of switch admission line 3, the valve pocket hole of round taper hole structure is offered in described gas valve core 2, described gas valve core 2 is a conical round table structure corresponding with valve pocket hole, described valve pocket hole side opening is provided with gas outlet 50, described gas valve core 2 offers at least one circumference distribution and the vent corresponding with gas outlet 50, described gas valve core 2 is driven by a valve core rotation driving mechanism and rotates, and described gas valve core 2 is compacted in valve pocket hole by an elastic device.
As shown in the figure, as preferably, a coupling shaft 20 is provided with bottom the gas valve core 2 of described conical round table structure, described valve core rotation driving mechanism is a gear drive, it comprises the gearwheel 41 be connected with coupling shaft 20, the small gear 42 engaged with gearwheel 41 and stepper motor 43, the output shaft of described stepper motor 43 is connected with small gear 42, in the present embodiment, a fixed plate 7 is provided with in the upper end of air valve body 1, described stepper motor 43 is fixed on this fixed plate 7, and this fixed plate 7 upper cover is contained in side, valve pocket hole, with this valve pocket hole of capping, stepper motor 43 controls its angle of rotating by the control system of gas water-heater.
As preferably, as shown in the figure, described elastic device is a spring 5, described spring 5 is set on this coupling shaft 20, and top, this spring 5 one end is pressed in bottom gas valve core 2, its the other end top is pressed in inside fixed plate 7, makes gas valve core 2 all the time and keep between supporting valve pocket hole fitting, avoids gas leakage.
The valve pocket hole of the utility model by adopting the gas valve core 2 of conical round table structure to coordinate taper, and compress gas valve core 2 by elastic device such as spring 5 grade, spool and valve pocket hole can closely cooperate, and make the gap between spool and valve pocket hole negligible,
In actual course of working, gas valve core 2 and the supporting mitre velve lumen pore of conical round table structure first adopt finish turning to process, if when machining accuracy does not still reach seal request, by gas valve core 2 and mitre velve lumen pore abrasive machining, can realize its sealing.
Owing to substantially realizing between gas valve core 2 and air valve body 1 sealing, the gap air leak in original design is not just present in substantially, and the one-way of Air-regulating valves is guaranteed, and the degree of regulation of gas valve core 2 is higher more reliable.
On the other hand, owing to substantially sealing between air valve body 1 and gas valve core 2, therefore, by little vent 22 size of gas valve core 2, accurately can control water heater minimum load amount, realize wide Load Regulation, thus do not need summer in winter solenoid valve.
In fact, water heater minimum load controls, and is mainly limited by two factors: one is the minimum Throughput of air valve body 1, by the little vent 22 of gas valve core 2, the combined influence in gap between air valve body 1 and gas valve core 2, structure is difficult to control; Be then the impact by Water heater igniting on the other hand, too small gas quantity may cause flame between the multiple burner of water heater effectively not transmit, and Some gases is without outside the direct discharge chamber of burning.
And the utility model better overcomes the above problems, substantially seal between air valve body 1 and gas valve core 2, water heater minimum load is decided by the little vent 22 of gas valve core 2, and during Water heater igniting, can by gas valve core 2 position during controller setting igniting, after ensureing that enough gas quantities complete igniting, then water heater is adjusted to gas valve core position needed for stable in outlet water temperature.
In the utility model, described vent is circular port or grooved hole, or the combination in circular port and grooved hole, in the present embodiment, gas valve core 2 offers the vent of 2, be respectively regulating the qi flowing in the channels vent 21 and little vent 22, its medium and small vent 22 is circular hole, for the minimum tolerance of control valve body; Regulating the qi flowing in the channels vent 21 is the combination in circular hole that the little vent of relative aperture 22 is large or circular port and grooved hole, rotated by stepper motor 43 rotating band spool 2 of taking offence, get final product the Throughput of regulation valve body, and by arranging grooved hole, make gas valve core 2 in certain angle range, the Throughput of valve body can be allowed to maintain a metastable state.
Working principle: combustion gas enters from the admission line 3 of air valve body 1, after solenoid valve 4, enters perforate below gas valve core 2, by gas valve core 2 side vent, discharges from the gas outlet 50 of air valve body 1; Water heater automatic control system, by the difference of comparison outlet water temperature of water heater and user's setting temperature, drives stepper motor 43 to rotate; Stepper motor 43 rotates, and by gearwheel 41 and small gear 42, drives gas valve core 2 to rotate, realizes regulating gas supply, finally make outlet water temperature of water heater reach user's setting temperature, complete gas water-heater thermostatic process; The effect of spring 5 keeps certain pressure, and make gas valve core 2 all the time and keep between supporting valve pocket hole fitting, avoid gas leakage, fixed plate 7 is arranged on air valve body 1, and stepper motor 43 is arranged on fixed plate 7; Owing to adopting motorized adjustment gas quantity mode, thus can, by gas quantity during Water heater igniting, control in precalculated position, ensure water heater normal ignition, after water heater completes igniting, then carry out gas quantity adjustment.
Above better enforcement of the present utility model is illustrated; certainly; the utility model can also adopt form different from the embodiment described above; as elastic device can adopt the alternative springs 5 such as torsion spring; and valve core rotation driving mechanism also can adopt actuating motor etc. to substitute; therefore the equivalent conversion done under the prerequisite without prejudice to spirit of the present invention of those of ordinary skill in the art or change accordingly, all should belong in protection domain of the present utility model.
Claims (5)
1. a constant temp gas water heater valve body, comprise valve body body, it is characterized in that: described valve body body comprises air valve body (1), gas valve core (2), described air valve body (1) is connected with an admission line (3), described admission line (3) is provided with can the solenoid valve (4) of switch admission line (3), the valve pocket hole of round taper hole structure is offered in described gas valve core (2), described gas valve core (2) is a conical round table structure corresponding with valve pocket hole, described valve pocket hole side opening is provided with gas outlet (50), described gas valve core (2) offers at least one circumference distribution and the vent corresponding with gas outlet (50), described gas valve core (2) is driven by a valve core rotation driving mechanism and rotates, and described gas valve core (2) is compacted in valve pocket hole by an elastic device.
2. a kind of constant temp gas water heater valve body according to claim 1, it is characterized in that: described elastic device is spring (5), the gas valve core (2) of described conical round table structure is provided with a coupling shaft (20), described spring (5) is set on this coupling shaft (20), top, described spring (5) one end is pressed on gas valve core (2), and its other end top is pressed in air valve body (1) inwall.
3. a kind of constant temp gas water heater valve body according to claim 1 and 2, it is characterized in that: described valve core rotation driving mechanism is a gear drive, it comprises the gearwheel (41) be connected with spool (3), the small gear (42) engaged with gearwheel (41) and stepper motor (43), and the output shaft of described stepper motor (43) is connected with small gear (42).
4. a kind of constant temp gas water heater valve body according to claim 3, it is characterized in that: described air valve body (1) is provided with a fixed plate (7), described stepper motor (43) is fixed on this fixed plate (7).
5. a kind of constant temp gas water heater valve body according to claim 1, is characterized in that: described vent is circular port or grooved hole, or the combination in circular port and grooved hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420832125.6U CN204512524U (en) | 2014-12-23 | 2014-12-23 | A kind of constant temp gas water heater valve body |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420832125.6U CN204512524U (en) | 2014-12-23 | 2014-12-23 | A kind of constant temp gas water heater valve body |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204512524U true CN204512524U (en) | 2015-07-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420832125.6U Expired - Fee Related CN204512524U (en) | 2014-12-23 | 2014-12-23 | A kind of constant temp gas water heater valve body |
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| CN (1) | CN204512524U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111380228A (en) * | 2020-03-04 | 2020-07-07 | 华帝股份有限公司 | Low-air-pressure identification control method of gas water heater |
-
2014
- 2014-12-23 CN CN201420832125.6U patent/CN204512524U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111380228A (en) * | 2020-03-04 | 2020-07-07 | 华帝股份有限公司 | Low-air-pressure identification control method of gas water heater |
| CN111380228B (en) * | 2020-03-04 | 2021-07-16 | 华帝股份有限公司 | Low-air-pressure identification control method of gas water heater |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150729 Termination date: 20161223 |
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| CF01 | Termination of patent right due to non-payment of annual fee |