CN201110643Y - Water heater constant pressure water supply control device - Google Patents
Water heater constant pressure water supply control device Download PDFInfo
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- CN201110643Y CN201110643Y CNU2007200273856U CN200720027385U CN201110643Y CN 201110643 Y CN201110643 Y CN 201110643Y CN U2007200273856 U CNU2007200273856 U CN U2007200273856U CN 200720027385 U CN200720027385 U CN 200720027385U CN 201110643 Y CN201110643 Y CN 201110643Y
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- water heater
- water supply
- control device
- tubing pump
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Abstract
The utility model discloses a constant pressure water supply controlling device of a water heater, wherein a pressure transducer and an inline pump are arranged in a water supply piping of the water heater, the pressure transducer detects water pressure in the water supply piping, outputs detected signals to a control device of the water heater, the control device outputs control signals via an output terminal of the control device, thereby controlling on-off states of the inline pump. The constant pressure water supply controlling device arranges the pressure transducer and the inline pump in the water supply piping of the water heater, the inline pump is opened when water pressure of cold water supply is lower than a set value to increase pressure for the water supply piping, thereby enabling the of pressure of the cold water to satisfy the requirement, further, the inline pump is controlled to stop working when the cold water pressure is recovered, thereby keeping stability of temperature of output water of the water heater.
Description
Technical field
The utility model belongs to technical field of water heaters, specifically, relates to a kind of constant pressure water supply control device that is used for water heater.
Background technology
Commercial relatively large electric heating or solar water heater can satisfy the needs that the several people has a bath simultaneously.This water heater has a shortcoming, and when the cold water water supply pressure was low, the delivery port water temperature can uprise; And when cold water hydraulic pressure was high, the delivery port water temperature again can step-down.If many people have a bath simultaneously, problem will occur when water inlet pipe was thin, and when perhaps water consumption was suddenly big or suddenly small, it is more serious that this situation can become, and the sometimes hot and sometimes cold water capacity easily makes the people catch a cold, but also has the danger of scald.The reason that this situation occurs is because the pressure of hot water of most water heaters is constant substantially, and cold water hydraulic pressure can change along with the variation of other people water, water for a long time, cold water hydraulic pressure can reduce, water after a little while, cold water hydraulic pressure can improve again, and this situation was more obvious when especially the tap water supply pipe was thin.
The utility model content
The utility model to reduce water pressure fluctuations, is guaranteed the stable of water heater leaving water temperature in order to solve existing water heater because the sometimes hot and sometimes cold problem of water outlet that cold water pressure of supply water instability causes provides a kind of novel water heater constant pressure water supply control device.
For solving the problems of the technologies described above, the utility model is achieved by the following technical solutions:
A kind of water heater constant pressure water supply control device, in the water supply line of described water heater, be provided with pressure sensor and tubing pump, described pressure sensor detects the hydraulic pressure in the water supply line, the controller of output detection signal to the water heater, described controller is exported control signal by its output to tubing pump, to control the on off state of described tubing pump.
Wherein, described tubing pump is installed in the cold water water side of water heater, and described pressure sensor is installed in the water inlet end of water heater; The installation site of described pressure sensor is away from the installation site of tubing pump.
In addition, also can establish a storage tank in addition in described water heater, the water inlet of described storage tank connects the water inlet end of water heater, the input of the delivery port connecting pipe pump of storage tank, and the pipeline delivery side of pump connects the cold water water side of water heater.Described pressure sensor is installed in the water inlet end of water heater, and its installation site should be away from the installation site of tubing pump.
Further, the water storage tank water level control assembly is installed, the liquid level in the water tank is controlled in real time in the water inlet of described storage tank.And in the water supply line of described water heater, the cold water output channel that connects the water heater water inlet end intersects by check valve and described pipeline delivery side of pump, and then connects the cold water water side of described water heater.
Further again, the output of described controller connects described tubing pump by an ON-OFF control circuit.
Wherein, include a NPN type triode and a relay in described ON-OFF control circuit, the base stage of described NPN type triode connects the output of described controller, grounded emitter, and colelctor electrode connects dc source by relay coil; The normal open switch of described relay is connected on to tubing pump and provides between the feeder ear of the power supply of operating voltage and described tubing pump.
Further again, in order to improve the accuracy that water heater water inlet end hydraulic pressure detects, described pressure sensor preferably adopts the electronic pressure sensor of range below 1MPa.
Compared with prior art, advantage of the present utility model and good effect are: the utility model is by being provided with pressure sensor and tubing pump in the water supply line of water heater, when the cold water pressure of supply water is lower than setting value, open tubing pump, be the water supply line supercharging, cold water hydraulic pressure is met the demands; And after cold water hydraulic pressure recovered, the control tubing pump quit work, to keep the stable of water heater leaving water temperature.Water heater constant pressure water supply control device of the present utility model is simple in structure, control is reliable, helps to promote the complete machine performance and the market competitiveness of water heater product, is adapted at supporting use in the big-and-middle-sized water heater.
After reading the detailed description of the utility model embodiment in conjunction with the accompanying drawings, other characteristics of the present utility model and advantage will become clearer.
Description of drawings
Fig. 1 is the structural representation of one of them embodiment of the water heater constant pressure water supply control device that proposes of the utility model;
Fig. 2 is the structural representation of another embodiment of described constant pressure water supply control device;
Fig. 3 is the schematic diagram of control circuit.
The specific embodiment
Below in conjunction with accompanying drawing the specific embodiment of the present utility model is described in further detail.
The utility model is constant in order to ensure cold water hydraulic pressure, in the water supply line of water heater, be provided with devices such as pressure sensor and tubing pump, detect the water inlet end hydraulic pressure of water heater in real time by pressure sensor, thereby on off state according to hydraulic pressure situation control tubing pump, when being lower than setting value to be implemented in cold water pressure, tubing pump starts automatically, and hydraulic pressure is met the demands; And after hydraulic pressure recovered normally, tubing pump stopped automatically, and then reaches the stable purpose of water heater leaving water temperature.
Should be noted that: described water supply of water heater pipeline is logical in the utility model to refer to that one is cut to the pipeline that water heater provides the water source, and comprising the cold water circulation duct that generally has in the existing water heater and adopting alternate manner is the water heater inlet channel that replenishes the water source etc.This explanation will have clearer and more definite explanation in follow-up embodiment.
Embodiment one, referring to shown in Figure 1, computer plate 3 is installed in the casing 1 of water heater, can design the control circuit of control water heater heat time heating time or heating setpoint temperature and the switch motion of control water heater heating element heater etc. on it.Near setting pressure sensor 7 water inlet end of the water supply line 6 of water heater detects in real time to the cold water pressure of water inlet end, and detection signal is transferred to controller in the computer plate 3 by cable 2.Described controller judges whether needs unlatching tubing pump 5 to increase cold water hydraulic pressure according to detected water inlet end pressure, and the control signal of its generation is sent to tubing pump 5 by transmission cable 4, with the on off state of control tubing pump 5.Described tubing pump 5 is preferably disposed near the cold water water side of water heater, and its installation site should be away from the installation site of pressure sensor 7, and the accurate detection to pressure sensor 7 when avoiding its work causes adverse effect.
In order to reach the purpose of the stable cold water hydraulic pressure that the utility model proposes, on described water heater computer plate 3, need to design correspondent control circuits to realize to the real-time collection of pressure sensor 7 output signals and to effective control of tubing pump 5 on off states, present embodiment provides wherein a kind of simple in structure and effective circuit structure, sees for details shown in Figure 3.
Among Fig. 3, the controller in the control circuit can adopt at present common single-chip microcomputer IC1 to realize, certainly, also can adopt other little process chip to substitute, and the utility model is not limited thereto.For pressure sensor U1 provides stable dc supply, the detection signal output OUT of pressure sensor U1 connects wherein one tunnel analog-to-digital conversion mouth ADI of single-chip microcomputer IC1 to dc source VCC through resistance R 1, filter capacitor C3 after capacitor C 1, C2 filtering.Described single-chip microcomputer IC1 compares the setting value that the analog voltage signal that receives converts to after the data signal with its storage inside, if be lower than setting value, think that then the cold water pressure in water heater this moment is low excessively, and then export high-level control signal by its output IO and open with control tubing pump 5, increase the hydraulic pressure of water supply line.And when the detected hydraulic pressure of pressure sensor U1 is greater than or equal to described setting value, think that then the water pipe pressure in the water heater meets the demands, at this moment, single-chip microcomputer IC1 is by its output IO output low level control signal, quit work with control tubing pump 5, and then maintaining heat hydrophone leaving water temperature is stable.
Accurately start and stop in order to drive tubing pump 5, be connected with an ON-OFF control circuit at the output IO of described single-chip microcomputer IC1.Described ON-OFF control circuit can adopt multiple version to realize that present embodiment is only enumerated wherein a kind of way of realization at this, comprises a NPN type triode N1 and a relay K.The base stage of described NPN type triode N1 is passed through the output IO that resistance R 3 connects single-chip microcomputer IC1, grounded emitter, and colelctor electrode connects dc source VCC by relay coil K; The normal open switch K1 of described relay is connected between 1,2 pin of the interface CN1 that links to each other with tubing pump 5.1 pin of described interface CN1 is connected to the power supply that tubing pump 5 provides operating voltage, the feeder ear of 2 pin connecting pipe pumps 5.When single-chip microcomputer IC1 output high-level control signal, triode N1 conducting, and then make the power circuit conducting of relay coil K, and its normal open switch K1 closure, power supply starts tubing pump 5 for tubing pump 5 provides operating voltage, is water supply line 6 superchargings.And when the output IO of single-chip microcomputer IC1 output low level control signal, triode N1 ends, relay coil K dead electricity, its normal open switch K1 is disconnected, and then the blocking-up power supply makes tubing pump 5 outages quit work the current hydraulic pressure of maintenance water supply line 6 to the power supply of tubing pump 5.
Certainly, described tubing pump 5 also can adopt the tubing pump with flow regulating function to realize, at this moment, single-chip microcomputer IC1 can have the control end of the analog signal of different potentials value to described tubing pump 5 according to the hydraulic pressure size output that pressure sensor U1 collects, to regulate the output flow of tubing pump 5, make the cold water hydraulic pressure in the water supply of water heater pipeline 6 obtain more stable control.
The technical scheme of present embodiment is applicable to the situation that water pressure fluctuations is not too big, and this infrastructure cost is low, is fit to present most cases.But when the bigger situation of water pressure fluctuations, tubing pump 5 can not obtain enough water inlets from the water heater water inlet end, also just can't implement supercharging.In order to address this problem, can adopt the technical scheme of following embodiment.
Embodiment two, referring to shown in Figure 2, at the inner or outside storage tank 9 that supplies water for tubing pump 5 separately of setting up of water heater, the water inlet of storage tank 9 connects the water inlet end of water heater by cistern water level control assembly 10, when storage tank 9 water levels are lower than to a certain degree, storage tank 9 moisturizings are given in 10 actions of water level control assembly, and this control device can adopt now existing any mechanical device to realize.Certainly, described water level control assembly 10 also can be arranged on storage tank 9 inside, and the break-make of water inlet is controlled.The input of the delivery port connecting pipe pump 5 of storage tank 9, the output of tubing pump 5 connects the cold water water side of water heater.Also constitute the part of described water supply of water heater pipeline 6 here, by the moisturizing pipeline of storage tank 9 and connecting pipe pump 5.Pressure sensor 7 is installed in the water inlet end of water heater, and its installation site should be away from the installation site of tubing pump 5.The water supply line 6 that passes through water heater for the water supply that prevents tubing pump 5 outputs refluxes to water inlet end, thereby the hydraulic pressure that prevents tubing pump 5 outputs simultaneously is applied to the accurate detection that water inlet end influences 7 pairs of water inlet end hydraulic pressure of pressure sensor, in the water supply line 6 of water heater, the cold water output channel that connects the water heater water inlet end intersects by the output of check valve 8 with described tubing pump 5, and then connects the cold water water side of described water heater.
In the present embodiment, the control circuit of control tubing pump 5 start and stop can adopt circuit structure shown in Figure 3 equally, and present embodiment is no longer given unnecessary details at this.Certainly, can adopt other multiple ON-OFF control circuit form, the utility model does not specifically limit this yet.
When using the described water heater of present embodiment, when pressure sensor 7 detected water inlet end pressure and is lower than setting value, control tubing pump 5 was opened, and replenishes cold water by storage tank 9; And after water heater water inlet end hydraulic pressure was normal, controller control tubing pump 5 quit work, and automatically restored to the normal operating conditions that is supplied water by water inlet end.
It should be noted that: in order to improve the accuracy that water heater water inlet end hydraulic pressure detects, the electronic pressure sensor of employed pressure sensor 7 best selected ranges below 1MPa in above-mentioned two embodiment is such as the MPX5999D type electronic pressure transmitter of FREESCALE company release.
Certainly; above-mentioned explanation is not to be to restriction of the present utility model; the utility model also is not limited in above-mentioned giving an example, and variation, remodeling, interpolation or replacement that those skilled in the art are made in essential scope of the present utility model also should belong to protection domain of the present utility model.
Claims (10)
1, a kind of water heater constant pressure water supply control device, it is characterized in that: in the water supply line of described water heater, be provided with pressure sensor and tubing pump, described pressure sensor detects the hydraulic pressure in the water supply line, the controller of output detection signal to the water heater, described controller is exported control signal by its output to tubing pump, to control the on off state of described tubing pump.
2, water heater constant pressure water supply control device according to claim 1, it is characterized in that: described tubing pump is installed in the cold water water side of water heater, and described pressure sensor is installed in the water inlet end of water heater.
3, water heater constant pressure water supply control device according to claim 2, it is characterized in that: the installation site of described pressure sensor is away from the installation site of tubing pump.
4, water heater constant pressure water supply control device according to claim 1, it is characterized in that: in described water heater, establish a storage tank in addition, the water inlet of described storage tank connects the water inlet end of water heater, the input of the delivery port connecting pipe pump of storage tank, the pipeline delivery side of pump connects the cold water water side of water heater.
5, water heater constant pressure water supply control device according to claim 4, it is characterized in that: described pressure sensor is installed in the water inlet end of water heater, and its installation site is away from the installation site of tubing pump.
6, water heater constant pressure water supply control device according to claim 4 is characterized in that: in the water inlet of described storage tank the water storage tank water level control assembly is installed.
7, water heater constant pressure water supply control device according to claim 4, it is characterized in that: in the water supply line of described water heater, the cold water output channel that connects the water heater water inlet end intersects by check valve and described pipeline delivery side of pump, and then connects the cold water water side of described water heater.
8, according to each described water heater constant pressure water supply control device in the claim 1 to 7, it is characterized in that: the output of described controller connects described tubing pump by an ON-OFF control circuit.
9, water heater constant pressure water supply control device according to claim 8, it is characterized in that: in described ON-OFF control circuit, include a NPN type triode and a relay, the base stage of described NPN type triode connects the output of described controller, grounded emitter, colelctor electrode connects dc source by relay coil; The normal open switch of described relay is connected on to tubing pump and provides between the feeder ear of the power supply of operating voltage and described tubing pump.
10, according to each described water heater constant pressure water supply control device in the claim 1 to 7, it is characterized in that: described pressure sensor is the electronic pressure sensor of range below 1MPa.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200273856U CN201110643Y (en) | 2007-09-07 | 2007-09-07 | Water heater constant pressure water supply control device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200273856U CN201110643Y (en) | 2007-09-07 | 2007-09-07 | Water heater constant pressure water supply control device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201110643Y true CN201110643Y (en) | 2008-09-03 |
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ID=39895176
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200273856U Expired - Lifetime CN201110643Y (en) | 2007-09-07 | 2007-09-07 | Water heater constant pressure water supply control device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201110643Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109595820A (en) * | 2017-09-30 | 2019-04-09 | 宁波方太厨具有限公司 | A kind of control method of gas heater and the gas heater of application this method |
-
2007
- 2007-09-07 CN CNU2007200273856U patent/CN201110643Y/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109595820A (en) * | 2017-09-30 | 2019-04-09 | 宁波方太厨具有限公司 | A kind of control method of gas heater and the gas heater of application this method |
| CN109595820B (en) * | 2017-09-30 | 2023-05-26 | 宁波方太厨具有限公司 | Control method of gas water heater and gas water heater applying same |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20080903 |