CN114963550B - Water heater and control method - Google Patents
Water heater and control method Download PDFInfo
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- CN114963550B CN114963550B CN202110696406.8A CN202110696406A CN114963550B CN 114963550 B CN114963550 B CN 114963550B CN 202110696406 A CN202110696406 A CN 202110696406A CN 114963550 B CN114963550 B CN 114963550B
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 788
- 238000000034 method Methods 0.000 title claims abstract description 29
- 238000001514 detection method Methods 0.000 claims abstract description 34
- 238000005507 spraying Methods 0.000 claims description 4
- 238000004519 manufacturing process Methods 0.000 abstract description 11
- 239000000463 material Substances 0.000 abstract description 5
- 239000008399 tap water Substances 0.000 description 12
- 235000020679 tap water Nutrition 0.000 description 12
- 210000003298 dental enamel Anatomy 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 230000006698 induction Effects 0.000 description 4
- 238000005485 electric heating Methods 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 239000008236 heating water Substances 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000000630 rising effect Effects 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H9/00—Details
- F24H9/20—Arrangement or mounting of control or safety devices
- F24H9/2007—Arrangement or mounting of control or safety devices for water heaters
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/40—Solar thermal energy, e.g. solar towers
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Heat-Pump Type And Storage Water Heaters (AREA)
Abstract
The invention discloses a water heater and a control method, wherein the water heater comprises a water tank, a water pressure detection device and a pressure relief device, wherein the water pressure detection device is used for detecting the water pressure difference information of a water inlet end and a water outlet end of the water tank; the pressure relief device is used for controlling whether to relieve pressure of the water tank or not based on the water pressure difference information detected by the water pressure detection device. The control method comprises the steps of obtaining the water pressure difference information of the water inlet end and the water outlet end of the water tank; and judging whether the water pressure difference information reaches a preset threshold value, and if so, controlling the pressure relief device to relieve the pressure of the water tank. According to the water heater provided by the invention, the water pressure difference information of the water inlet end and the water outlet end of the water tank is detected to automatically control the water heater to release pressure, so that the water tank is prevented from bearing excessive pressure, the cost of water tank manufacturing materials and manufacturing processes is reduced, and the use experience of users is improved.
Description
Technical Field
The invention relates to the technical field of household appliances, in particular to a water heater and a control method.
Background
At present, the water storage type airtight water heater does not have the pressure discharging capability, and the pressure and water are discharged through a pressure relief valve and a flow guide pipe device. The standard prescribes that: the pressure release device in the closed water heater should be capable of preventing the pressure of the container from exceeding the rated pressure of 0.1MPa, namely the safety valve should not exceed the rated pressure of 0.1MPa of the liner. It is understood from the standard that the rated pressure of the relief valve is higher than the rated pressure of the liner, and the relief valve is opened only if the pressure in the water tank is higher than the rated pressure and reaches the rated pressure of the relief valve.
The existing water storage type water heater generally adopts a metal enamel process, a water inlet pipe and a water outlet pipe are reserved in the water tank, the water inlet pipe is communicated with tap water for entering cold water, and the hot water outlet pipe is communicated with a faucet or a shower head. During the heating process, the pressure in the tank will rise continuously. The rising pressure is large, so that the water tank is deformed on one hand, and if the deformation is too large, an enamel anti-corrosion layer on the inner wall of the water tank is damaged, so that the water tank is corroded; on the other hand, the pressure is transmitted to the tap water pipe, and damage to the pipe is likely to occur. The existing method is that a safety valve is arranged at the water inlet pipe, when the pressure in the water tank is overlarge, the safety valve is opened under the action of pressure, and the pressure is released. However, the pressure threshold value is relatively large when the traditional safety valve is opened at present, so that the requirement on the pressure-bearing performance of the water tank is high, and the manufacturing cost of the water tank is increased.
In the prior art, although there is a method for reducing the pressure in the water tank, the required parts are numerous and complex, which is not beneficial to maintenance and overhaul, for example: the invention patent with the application number of CN202011486669.8 discloses an electric water heater with a function of preventing excessive water pressure of an inner container, which comprises an inner container, an electric heating component, a water pressure sensor, a pressure relief device and a controller, wherein the electric heating component is arranged in the inner container; the water pressure sensor is used for detecting the water pressure of the inner container; the pressure relief device comprises a pressure relief valve body, an electric valve core assembly and a Hall sensor, wherein the pressure relief valve body is provided with a pressure relief channel, a pressure relief water outlet and a pressure relief water inlet, the electric valve core assembly is arranged in the pressure relief channel, the controller is configured to receive signals of the water pressure sensor and control the electric valve core assembly to be connected with or disconnected from the pressure relief channel, and the controller is configured to receive signals of the Hall sensor and the water pressure sensor and control the electric heating assembly to stop heating. The pressure relief device can be used for relieving pressure on the inner container, effectively solving the problem of overlarge water pressure of the inner container, judging whether the pressure relief device is damaged or not, and improving safety. But the water pressure sensor is arranged in the inner container (100), which is unfavorable for maintenance and has complex overall operation.
In view of this, the present invention has been made.
Disclosure of Invention
The water heater with the water pressure detection device and the pressure relief device can automatically relieve pressure when hot water is not used, and can stop pressure relief when the hot water is required to be used in order to ensure enough water pressure in the water tank; the water heater has less parts and components required for pressure relief, high automation degree and higher use experience.
In order to achieve the object, according to one aspect of the present invention, the following technical solutions are adopted:
a water heater, comprising: a water tank; the water pressure detection device is used for detecting the water pressure difference information of the water inlet end and the water outlet end of the water tank; and the pressure relief device is used for controlling whether to relieve pressure of the water tank based on the water pressure difference information detected by the water pressure detection device.
Further, the water heater also comprises a water inlet pipe and a water outlet pipe which are respectively communicated with the water tank.
Further, the water pressure detection device comprises water pressure sensors respectively arranged on the water inlet pipe and the water outlet pipe.
Further, the pressure relief device is provided with a pressure relief opening communicated with the outside, and when the water pressure detection device detects that the water pressure of the water inlet pipe and the water outlet pipe is in a balanced state, the pressure relief opening is controlled to be communicated with the water outlet pipe, so that the pressure relief of the water tank is realized.
Further, the pressure relief device includes: the pressure release valve is provided with a pressure release opening; the driving module drives the pressure release valve to enable the pressure release opening to be communicated or blocked with the water tank; and the control module is used for controlling the driving module to drive the pressure relief valve to act according to the received water pressure difference information fed back by the water pressure detection device.
Further, the relief valve includes: a valve casing provided with a pressure relief opening; the valve core is rotatably arranged in the valve shell; the valve core is internally provided with a pressure relief channel, a water inlet channel and a water outlet channel; the pressure relief device is arranged on the water inlet pipe and the water outlet pipe and is provided with a pressure relief state and a water inlet and outlet conduction state capable of conducting the water inlet pipe and the water outlet pipe.
Further, in the pressure relief state, the valve core rotates to a pressure relief position where the pressure relief channel is communicated with the water outlet pipe and the pressure relief opening, and the water inlet channel and the water outlet channel are closed.
Further, when the water inlet and outlet channels are in a water inlet and outlet conducting state, the valve core rotates to a water inlet conducting position where the water inlet channel and the water outlet channel are respectively communicated with the water inlet pipe, the water outlet pipe and the pressure relief channel.
Further, the water inlet pipe comprises: the first section of water inlet pipe, the inlet end is connected with an external water source, and the outlet end is connected with a pressure relief valve; the inlet end of the second section of water inlet pipe is connected with the pressure relief valve, and the outlet end of the second section of water inlet pipe is connected with the water tank;
further, the water outlet pipe comprises: the first section of water outlet pipe is connected with the pressure release valve at the inlet end and the spraying structure at the outlet end; and the inlet end of the second section of water outlet pipe is connected with the water tank, and the outlet end of the second section of water outlet pipe is connected with the pressure relief valve.
Preferably, in a water inlet and outlet conducting state, the water inlet end of the water inlet channel is communicated with the outlet end of the first section of water inlet pipe, and the water outlet end of the water inlet channel is communicated with the inlet end of the second section of water inlet pipe; the water inlet end of the water outlet channel is communicated with the outlet end of the second section of water outlet pipe, and the water outlet end of the water outlet channel is communicated with the outlet section of the first section of water outlet pipe.
Preferably, in the pressure relief state, the pressure relief water inlet end of the pressure relief channel is communicated with the outlet end of the second section of water outlet pipe, and the water outlet end of the pressure relief channel is communicated with the pressure relief opening.
Further, the water pressure sensor is respectively arranged on the first section water inlet pipe and the first section water outlet pipe.
Further, the valve housing is further provided with: the first water inlet connection port is connected with the outlet end of the first section of water inlet pipe; the second water inlet connection port is connected with the inlet end of the second section of water inlet pipe; the first water outlet connection port is connected with the inlet end of the first section of water outlet pipe; the second water outlet connector is connected with the outlet end of the second section of water outlet pipe.
Preferably, in the water inlet and outlet conducting state, the water inlet end of the water inlet channel is conducted with the first water inlet connecting port, and the water outlet end is conducted with the second water inlet connecting port; the water inlet end of the water outlet channel is communicated with the second water outlet connecting port, and the water outlet end of the water outlet channel is communicated with the first water outlet connecting port.
Preferably, in the pressure relief state, the pressure relief inlet end of the pressure relief channel is communicated with the second water outlet connection port, and the pressure relief outlet end is communicated with the pressure relief port.
Another object of the present invention is also to provide a control method of the water heater as described above, the control method comprising: acquiring the water pressure difference information of a water inlet end and a water outlet end of a water tank; and judging whether the water pressure difference information reaches a preset threshold value, and if so, controlling the pressure relief device to relieve the pressure of the water tank.
Further, the control method further includes: when the water pressure of the water inlet pipe and the water outlet pipe is in a balanced state, controlling the pressure relief valve to act, opening the pressure relief opening and relieving the pressure of the water tank; when the water pressure of the water inlet pipe is larger than the water pressure of the water outlet pipe, the pressure relief device is controlled to stop pressure relief.
Further, the control method further includes: when the water pressure detection device detects that the water pressure of the water inlet pipe and the water outlet pipe is equal, the control valve core rotates to the pressure relief position where the pressure relief channel is communicated with the water outlet pipe and the pressure relief opening, and the water inlet channel and the water outlet channel are closed.
Further, when the water pressure detection device detects that the water pressure of the water inlet pipe is larger than the water pressure of the water outlet pipe, the control valve core rotates to a water inlet and outlet conduction position for conducting the closing of the water inlet channel, the water outlet channel and the pressure relief opening.
Further, the control method further includes: when hot water is used, the running water valve is controlled to be opened, and when the water pressure detection device detects that the water pressure of the water inlet pipe is greater than the water pressure of the water outlet pipe, the control module controls the valve core to rotate to the water inlet and outlet conducting position through the driving module.
Further, when hot water is not used, the running water valve is closed, the water pressure detection device detects that the water pressure of the water inlet pipe is equal to the water pressure of the water outlet pipe, and the control module controls the valve core to rotate to the pressure relief position through the driving module.
After the technical scheme is adopted, compared with the prior art, the invention has the following beneficial effects:
the water heater with the water pressure detection device and the pressure relief device can automatically relieve pressure when hot water is not used, and the pressure relief can be stopped for ensuring enough water pressure in the water tank when the hot water is needed; the water heater has less parts and components required for pressure relief, high automation degree and higher use experience.
Drawings
FIG. 1 is a schematic view of a water heater according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of the structure of a pressure relief device, a water inlet pipe and a water outlet pipe in the water heater according to the embodiment of the invention;
FIG. 3 is a top view of FIG. 2 with the pressure relief device in a pressure relief state;
FIG. 4 is a cross-sectional view I of the base of FIG. 3;
FIG. 5 is a second cross-sectional view of the base of FIG. 3;
FIG. 6 is a top view of FIG. 2, wherein the pressure relief device is in a water inlet-outlet conductive state;
FIG. 7 is a cross-sectional view I of the base of FIG. 6;
FIG. 8 is a second cross-sectional view of the base of FIG. 6;
FIG. 9 is a schematic diagram showing a perspective structure of a pressure relief device, a water inlet pipe and a water outlet pipe in a water heater according to an embodiment of the present invention;
FIG. 10 is a schematic diagram showing a perspective structure of a pressure relief device, a water inlet pipe and a water outlet pipe in a water heater according to an embodiment of the present invention;
FIG. 11 is a schematic diagram of a control method implementation flow of a water heater according to an embodiment of the present invention;
in the figure:
100-a water tank;
200-water inlet pipe; 210-a first section of water inlet pipe; 220-a second section of water inlet pipe;
300-a water outlet pipe; 310-a first section of water outlet pipe; 320-a second section of water outlet pipe;
400-water pressure sensor;
500-a pressure relief device; 510-a pressure relief valve;
511-a valve housing; 5111-pressure relief vent; 5112-a first water inlet connection port; 5113-a second water inlet connection port; 5114-a first water outlet connection port; 5115-a second outlet connection port; 5116-a pressure relief tube;
512-valve core; 5121-pressure relief channel; 5122-water inlet channel; 5123-water outlet channel.
It should be noted that these drawings and the written description are not intended to limit the scope of the inventive concept in any way, but to illustrate the inventive concept to those skilled in the art by referring to the specific embodiments.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions in the embodiments will be clearly and completely described with reference to the accompanying drawings in the embodiments of the present invention, and the following embodiments are used to illustrate the present invention, but are not intended to limit the scope of the present invention.
In the description of the present invention, it should be noted that the directions or positional relationships indicated by the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention.
In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
In the existing water storage type water heater, a metal enamel technology is generally adopted in the water tank 100, the water tank 100 is provided with a water inlet pipe 200 and a water outlet pipe 300, the water inlet pipe 200 is communicated with tap water for inlet and cold water, and the water outlet pipe 300 is communicated with a water tap. During the heating, the pressure in the water tank 100 may continuously rise. The rising pressure is large, so that on one hand, the water tank 100 can deform, and if the deformation is too large, an enamel anti-corrosion layer on the inner wall of the water tank 100 can be damaged, so that the water tank 100 is corroded; on the other hand, the pressure is transmitted to the tap water pipe, and the pipe may be damaged. In the current method, a safety valve is installed at the water inlet pipe 200, and when the pressure in the water tank 100 is too high, the safety valve is opened under the action of pressure to release the pressure.
In the prior art, in order to ensure that the water pressure is sufficient, the opening pressure of the safety valve is relatively large, and the water tank 100 is deformed under such pressure, which requires that the yield strength of the material of the water tank 100 is relatively high; the greater yield strength results in greater difficulty in manufacturing water tank 100 and a complex manufacturing process, which provides for manufacturing costs of water tank 100. At the same time, the relatively high water pressure may cause damage to the tap water pipe. Based on the above, the technical scheme is specifically proposed.
The present invention will be described in further detail with reference to examples.
As shown in fig. 1-2, 9-10, a water heater comprising: a water tank 100; the water pressure detection device is used for detecting the water pressure difference information of the water inlet end and the water outlet end of the water tank 100; the pressure release device 500 controls whether to release pressure from the water tank 100 based on the pressure difference information of the water pressure detected by the water pressure detection device. The pressure relief device 500 in the technical scheme can replace a traditional safety valve, and passive pressure relief is changed into active pressure relief.
Further, the water heater further includes a water inlet pipe 200 and a water outlet pipe 300 respectively communicating with the water tank 100.
Further, the water pressure detecting means includes water pressure sensors 400 provided on the water inlet pipe 200 and the water outlet pipe 300, respectively. The sensor can also realize the opening and closing or on-off of the valve core 512 by other induction modes such as induction water flow and the like; the sensor can also be used for realizing the opening and closing or on-off of the valve core 512 in a linkage way by sensing the opening and closing of the water tap.
As shown in fig. 3-5, the pressure relief device 500 further has a pressure relief port 5111 communicating with the outside, and when the water pressure detecting device detects that the water pressure of the water inlet pipe 200 and the water outlet pipe 300 is in the balanced state, the pressure relief port 5111 is controlled to be communicated with the water outlet pipe 300, so as to relieve the pressure of the water tank 100. It will be appreciated that, to avoid the risk that the ejected steam may cause to the human body, the pressure relief tube 5116 connected to the pressure relief opening 5111 is provided, and the pressure relief tube 5116 is led to a direction away from the human body.
Further, the pressure relief device 500 includes: a relief valve 510 having a relief port 5111; the driving module drives the pressure release valve 510 to enable the pressure release opening 5111 to be communicated with or blocked from the water tank 100; the control module controls the driving module to drive the pressure release valve 510 to act according to the received water pressure difference information fed back by the water pressure detection device.
The control module may include a controller that may control the pressure relief valve 510 by sensing a change in water pressure. The controller water pressure sensing can be used for detecting the water pressure in a mechanical or electronic mode. On the premise of ensuring safety, the controller can also be arranged at the position of the pipeline or the tap.
The driving module includes a motor, and may be driven by a solenoid valve or other suitable means, which is not limited herein.
Further, the relief valve 510 includes: a valve housing 511 provided with a pressure relief vent 5111; a valve core 512 rotatably provided in the valve housing 511; the valve core 512 has a pressure release channel 5121, a water inlet channel 5122 and a water outlet channel 5123. It can be appreciated that the pressure relief channel 5121, the water inlet channel 5122 and the water outlet channel 5123 are integrated into the valve core 512, which has the advantage of small volume.
The pressure relief device 500 is disposed on the water inlet pipe 200 and the water outlet pipe 300, and the pressure relief device 500 has a pressure relief state and a water inlet and outlet conducting state capable of conducting the water inlet pipe 200 and the water outlet pipe 300.
As shown in fig. 3-5, preferably, in the pressure release state, the valve core 512 rotates to a pressure release position where the pressure release channel 5121 is closed to connect the water outlet pipe 300 and the pressure release port 5111, and the water inlet channel 5122 and the water outlet channel 5123.
As shown in fig. 6-8, preferably, in the water inlet and outlet conducting state, the valve core 512 rotates to the water inlet channel 5122 and the water outlet channel 5123 respectively connect the water inlet pipe 200, the water outlet pipe 300 and the pressure release channel 5121 to be closed.
Further, the water inlet pipe 200 includes: a first section inlet pipe 210 and a second section inlet pipe 220. The inlet end of the first section of water inlet pipe 210 is connected with an external water source, and the outlet end is connected with a pressure relief valve 510; the inlet end of the second section of water inlet pipe 220 is connected to the pressure relief valve 510 and the outlet end is connected to the water tank 100.
Further, the water outlet pipe 300 includes: a first section of outlet pipe 310 and a second section of outlet pipe 320. The inlet end of the first section of water outlet pipe 310 is connected with the pressure release valve 510, and the outlet end is connected with the spraying structure; the inlet end of the second section of water outlet pipe 320 is connected with the water tank 100, and the outlet end is connected with the pressure release valve 510.
Preferably, in and out of the water conducting state, the water inlet end of the water inlet channel 5122 is communicated with the outlet end of the first section water inlet pipe 210, and the water outlet end is communicated with the inlet end of the second section water inlet pipe 220; the water inlet end of the water outlet channel 5123 is communicated with the outlet end of the second section of water outlet pipe 320, the water outlet end is communicated with the outlet end of the first section of water outlet pipe 310, the pressure release channel 5121 is closed, and hot water can be used. The water pressure is not reduced when hot water is used, so that the sufficient pressure of the used water is ensured.
Preferably, in the pressure relief state, the pressure relief water inlet end of the pressure relief channel 5121 is communicated with the outlet end of the second section of water outlet pipe 320, and the water outlet end of the pressure relief channel 5121 is communicated with the pressure relief port 5111. At this time, the water inlet passage 5122 and the water outlet passage 5123 are in a closed state. When hot water is not used, the automatic pressure release can be realized at all times, so that the pressure can not be transmitted to a tap water pipeline.
Further, the water pressure sensor 400 is disposed on the first-stage water inlet pipe 210 and the first-stage water outlet pipe 310, respectively.
The pressure release valve 510 is integrally disposed between the outlet end of the first water outlet pipe 310 and the inlet end of the second water outlet pipe 320, and between the inlet end of the first water outlet pipe 310 and the outlet end of the second water outlet pipe 320.
As shown in fig. 3 to 8, further, the valve housing 511 is provided with: a first water inlet connection port 5112, a second water inlet connection port 5113, a first water outlet connection port 5114 and a second water outlet connection port 5115. The first water inlet connection port 5112 is connected with the outlet end of the first water inlet pipe 210; the second water inlet connection port 5113 is connected with the inlet end of the second water inlet pipe 220; the first water outlet connection port 5114 is connected with the inlet end of the first section of water outlet pipe 310; the second water outlet connection port 5115 is connected to the outlet end of the second water outlet pipe 320.
Preferably, in the water inlet and outlet conducting state, the water inlet end of the water inlet channel 5122 is conducted with the first water inlet connection port 5112, and the water outlet end is conducted with the second water inlet connection port 5113; the water inlet end of the water outlet channel 5123 is communicated with the second water outlet connection port 5115, and the water outlet end is communicated with the first water outlet connection port 5114.
Preferably, in the pressure relief state, the pressure relief inlet end of the pressure relief channel 5121 is communicated with the second water outlet connection port 5115, and the pressure relief outlet end is communicated with the pressure relief port 5111.
As shown in fig. 9, another object of the present invention is to provide a control method of the water heater as described above, the control method comprising: acquiring the water pressure difference information of the water inlet end and the water outlet end of the water tank 100; and judging whether the water pressure difference information reaches a preset threshold value, and if so, controlling the pressure relief device 500 to relieve the pressure of the water tank 100.
Further, the control method further includes: when the water pressure of the water inlet pipe 200 and the water outlet pipe 300 is in the balanced state, the pressure release valve 510 is controlled to act, the pressure release opening 5111 is opened, and the pressure of the water tank 100 is released; when the water pressure of the water inlet pipe 200 is greater than the water pressure of the water outlet pipe 300, the pressure relief device 500 is controlled to stop the pressure relief.
Further, the control method further includes: when the water pressure detecting device detects that the water pressures of the water inlet pipe 200 and the water outlet pipe 300 are equal, the control valve core 512 rotates to a pressure relief position where the pressure relief channel 5121 conducts the water outlet pipe 300 and the pressure relief opening 5111, and the water inlet channel 5122 and the water outlet channel 5123 are closed.
Further, when the water pressure detecting device detects that the water pressure of the water inlet pipe 200 is greater than the water pressure of the water outlet pipe 300, the control valve core 512 rotates to a water inlet/outlet conducting position where the water inlet channel 5122, the water outlet channel 5123 and the pressure relief opening 5111 are closed.
Further, the control method further includes: when the running water valve is controlled to be opened during hot water use, and the water pressure detection device detects that the water pressure of the water inlet pipe 200 is greater than the water pressure of the water outlet pipe 300, the control module controls the valve core 512 to rotate to the water inlet and outlet conducting position through the driving module.
Further, when the tap water valve is closed and the water pressure detecting device detects that the water pressure of the water inlet pipe 200 and the water outlet pipe 300 is equal when the hot water is not used, the control module controls the valve core 512 to rotate to the pressure release position through the driving module.
The embodiment states that the pressure relief device 500 capable of being intelligently controlled, when hot water is needed to be used, a faucet is opened, the controller feeds back pressure data through a pressure sensor, the pressure of a water inlet end is sensed to be larger than the pressure of a water outlet end, a motor rotation valve (a valve core 512) is controlled to be communicated with a water inlet channel 5122 and a water outlet channel 5123, a pressure relief opening 5111 is closed, and a closed waterway is formed at the moment, so that the hot water can be normally used; when the water heater stops using the hot water, the faucet valve is closed, the controller senses that the pressure of the water inlet end and the pressure of the water outlet end are balanced, and controls the motor to rotate the valve to close the water inlet channel 5122 and the water outlet channel 5123, so that the water heater tank 100 and the pressure relief opening 5111 are connected; after the pressure relief port 5111 is connected, the water tank 100 of the water heater is directly communicated with the atmosphere, so that the pressure generated by heating water in the water tank 100 can be completely released through the pressure relief channel 5121 of the pressure relief valve 510, and the excessive pressure generated in the water tank 100 is avoided, so that the water tank 100 and a tap water pipeline are prevented from bearing excessive pressure. Thus, the yield strength of the material used for the water tank 100 can be reduced, the manufacturing difficulty in the forming process of the water tank 100 can be reduced, the manufacturing process can be reduced, and the material cost and the manufacturing cost of the water tank 100 can be reduced; at the same time, the risk of damage to the tap water pipeline due to excessive pressure is avoided as much as possible.
The water pressure detection device and the pressure relief device 500 are arranged outside the water tank 100 of the water heater, and can directly control whether the water tank 100 needs to be subjected to pressure relief according to the water pressure difference information detected by the water pressure detection device, the water heater with the water pressure detection device and the pressure relief device 500 can automatically relieve pressure when hot water is not used, and the pressure relief can be stopped when the hot water is required to be used so as to ensure enough water pressure in the water tank 100; the water heater has less parts and components required for pressure relief, high automation degree and higher use experience.
Example 1
As shown in fig. 1 to 10, the present embodiment discloses a water heater with a pressure relief device 500, which includes a water tank 100, a water inlet pipe 200 and a water outlet pipe 300 respectively communicating with the water tank 100, a water pressure sensor 400, and the pressure relief device 500.
The inlet pipe 200 includes a first section inlet pipe 210 and a second section inlet pipe 220. The outlet pipe 300 includes a first section outlet pipe 310 and a second section outlet pipe 320.
The water pressure sensor 400 is used for detecting the water pressure difference information of the water inlet end and the water outlet end of the water tank 100; water pressure sensors 400 are provided on the water inlet pipe 200 and the water outlet pipe 300, respectively. The sensor can also realize the opening and closing or on-off of the valve core 512 by other induction modes such as induction water flow and the like; the sensor can also be used for realizing the opening and closing or on-off of the valve core 512 in a linkage way by sensing the opening and closing of the water tap. Further, the water pressure sensor 400 is disposed on the first-stage water inlet pipe 210 and the first-stage water outlet pipe 310, respectively.
The pressure release device 500 controls whether to release pressure from the water tank 100 based on the pressure difference information of the water pressure detected by the water pressure detection device. The pressure relief device 500 in the technical scheme can replace a traditional safety valve, and passive pressure relief is changed into active pressure relief. The pressure relief device 500 has a pressure relief port 5111 communicating with the outside, and when the water pressure sensor 400 detects that the water pressure of the water inlet pipe 200 and the water outlet pipe 300 is in a balanced state, the pressure relief port 5111 is controlled to be communicated with the water outlet pipe 300, so as to realize pressure relief of the water tank 100. It will be appreciated that, to avoid the risk that the ejected steam may cause to the human body, the pressure relief tube 5116 connected to the pressure relief opening 5111 is provided, and the pressure relief tube 5116 is led to a direction away from the human body.
Further, the pressure relief device 500 includes a pressure relief valve 510, a motor, and a controller.
Wherein the relief valve 510 includes a valve housing 511 and a valve spool 512. The valve housing 511 is provided with the pressure relief port 5111, the first water inlet connection port 5112, the second water inlet connection port 5113, the first water outlet connection port 5114 and the second water outlet connection port 5115. The valve spool 512 is rotatably disposed within the valve housing 511, and includes a pressure relief passage 5121, a water inlet passage 5122, and a water outlet passage 5123, which are integrated together to form the valve spool 512. The pressure release valve 510 is integrally disposed between the outlet end of the first water outlet pipe 310 and the inlet end of the second water outlet pipe 320, and between the inlet end of the first water outlet pipe 310 and the outlet end of the second water outlet pipe 320.
The motor drives the relief valve 510 to make the relief port 5111 communicate with or block the water tank 100. Of course, the driving may be performed by an appropriate means such as a solenoid valve, and the driving is not limited thereto.
The controller controls the motor to drive the pressure release valve 510 to act according to the received water pressure difference information fed back by the water pressure detection device. The controller may control the relief valve 510 by sensing a change in water pressure. The controller water pressure sensing can be used for detecting the water pressure in a mechanical or electronic mode. On the premise of ensuring safety, the controller can also be arranged at the position of the pipeline or the tap.
As shown in fig. 3 to 10, the pressure relief device 500 is disposed on the water inlet pipe 200 and the water outlet pipe 300, and the pressure relief device 500 has a pressure relief state and a water inlet and outlet conducting state capable of conducting the water inlet pipe 200 and the water outlet pipe 300. In the pressure release state, the valve core 512 rotates to a pressure release position where the pressure release channel 5121 is closed by the water outlet pipe 300 and the pressure release opening 5111, and the water inlet channel 5122 and the water outlet channel 5123. In the water inlet/outlet conducting state, the valve core 512 rotates to the water inlet channel 5122 and the water outlet channel 5123 respectively connect the water inlet pipe 200, the water outlet pipe 300 and the pressure release channel 5121.
Further, the inlet end of the first section of water inlet pipe 210 is connected with an external water source, and the outlet end is connected with the pressure release valve 510; the inlet end of the second section of water inlet pipe 220 is connected to the pressure relief valve 510 and the outlet end is connected to the water tank 100. The inlet end of the first section of water outlet pipe 310 is connected with the pressure release valve 510, and the outlet end is connected with the spraying structure; the inlet end of the second section of water outlet pipe 320 is connected with the water tank 100, and the outlet end is connected with the pressure release valve 510. Preferably, in and out of the water conducting state, the water inlet end of the water inlet channel 5122 is communicated with the outlet end of the first section water inlet pipe 210, and the water outlet end is communicated with the inlet end of the second section water inlet pipe 220; the water inlet end of the water outlet channel 5123 is communicated with the outlet end of the second section of water outlet pipe 320, the water outlet end is communicated with the outlet end of the first section of water outlet pipe 310, the pressure release channel 5121 is closed, and hot water can be used. The water pressure is not reduced when hot water is used, so that the sufficient pressure of the used water is ensured. Preferably, in the pressure relief state, the pressure relief water inlet end of the pressure relief channel 5121 is communicated with the outlet end of the second section of water outlet pipe 320, and the water outlet end of the pressure relief channel 5121 is communicated with the pressure relief port 5111. At this time, the water inlet passage 5122 and the water outlet passage 5123 are in a closed state. When hot water is not used, the automatic pressure release can be realized at all times, so that the pressure can not be transmitted to a tap water pipeline.
Further, the first water inlet connection port 5112 is connected to the outlet end of the first water inlet pipe 210; the second water inlet connection port 5113 is connected with the inlet end of the second water inlet pipe 220; the first water outlet connection port 5114 is connected with the inlet end of the first section of water outlet pipe 310; the second water outlet connection port 5115 is connected to the outlet end of the second water outlet pipe 320. Preferably, in the water inlet and outlet conducting state, the water inlet end of the water inlet channel 5122 is conducted with the first water inlet connection port 5112, and the water outlet end is conducted with the second water inlet connection port 5113; the water inlet end of the water outlet channel 5123 is communicated with the second water outlet connection port 5115, and the water outlet end is communicated with the first water outlet connection port 5114. In the pressure relief state, the pressure relief inlet end of the pressure relief channel 5121 is communicated with the second water outlet connection port 5115, and the pressure relief outlet end is communicated with the pressure relief port 5111.
As shown in fig. 9 to 10, the valve core 512 has a cylindrical shape, and the corresponding valve housing 511 has a cylindrical hollow interior and is coated on the outside of the valve core 512; the pressure relief port 5111, the first water inlet connection port 5112, the second water inlet connection port 5113, the first water outlet connection port 5114, and the second water outlet connection port 5115 are provided on the peripheral side wall of the valve housing 511. The first water inlet connection port 5112 is disposed corresponding to the second water inlet connection port 5113, and the first water outlet connection port 5114 is disposed corresponding to the second water outlet connection port 5115.
The motor may be provided at the back (rear) of the valve housing 511 to drive the pressure relief passage 5121, the water inlet passage 5122 and the water outlet passage 5123 in the valve cartridge 512 by the motor. Specifically, when the motor drives the water inlet channel 5122 and the water outlet channel 5123 to act, two ends of the water inlet channel 5122 are respectively communicated with the first water inlet connection port 5112 and the second water inlet connection port 5113, two ends of the water outlet channel 5123 are respectively communicated with the first water outlet connection port 5114 and the second water outlet connection port 5115 (as shown in fig. 7), at this time, the pressure release channel 5121 is in a closed state (as shown in fig. 8), pressure release is not performed, and at this time, hot water can be used. When the motor drives the pressure release channel 5121 to act, two ends of the pressure release channel 5121 are respectively connected with the second water outlet connection port 5115 and the pressure release port 5111 (as shown in fig. 5), and at this time, the water inlet channel 5122 and the water outlet channel 5123 are in a closed state (as shown in fig. 4), so that the water tank 100 can release pressure.
The working principle of the embodiment is as follows: when hot water is needed to be used, the faucet is opened, the controller feeds back pressure data through the pressure sensor, the pressure at the water inlet end is sensed to be larger than the pressure at the water outlet end, the motor is controlled to rotate the valve core 512 to switch on water inlet and water outlet, the pressure relief opening 5111 is closed, and a closed waterway is formed at the moment, so that the hot water can be normally used; the faucet valve is closed, the controller senses that the pressure at the water inlet end and the pressure at the water outlet end are balanced, controls the motor to rotate the valve core 512 to close water inlet and water outlet, and switches on the water heater tank 100 and the pressure relief port 5111; after the pressure relief port 5111 is connected, the water tank 100 of the water heater is directly communicated with the atmosphere, and the pressure relief outlet is arranged at a safe position where people cannot be scalded, so that the pressure generated by heating water in the water tank 100 can be completely released through the pressure relief valve 510. According to the water heater provided by the invention, the water pressure difference information of the water inlet end and the water outlet end of the water tank is detected to automatically control the water heater to release pressure, so that the water tank is prevented from bearing excessive pressure, the cost of water tank manufacturing materials and manufacturing processes is reduced, and the use experience of users is improved.
Example two
As shown in fig. 11, the present embodiment states a method of controlling the water heater on the basis of the first embodiment, and specifically includes the following steps:
step S20: the hydraulic pressure difference information of the water inlet end and the water outlet end of the water tank 100 is obtained.
Step S30: and judging whether the water pressure difference information reaches a preset threshold value or not.
If the hydraulic pressure difference information reaches the preset threshold, step S40 is executed: the pressure relief device 500 is controlled to relieve pressure in the water tank 100.
The control method of the water heater further comprises the following steps:
when the water pressures of the water inlet pipe 200 and the water outlet pipe 300 are in the balanced state, step S41 is performed: the pressure release valve 510 is controlled to operate, and the pressure release port 5111 is opened to release the pressure of the water tank 100.
When the water pressure of the water inlet pipe 200 is greater than the water pressure of the water outlet pipe 300, step S50 is performed: the pressure relief device 500 is controlled to stop the pressure relief.
Further, the control method of the water heater may further include: when the water pressure detection device detects that the water pressures of the water inlet pipe 200 and the water outlet pipe 300 are equal, the control valve core 512 rotates to a pressure relief position where the pressure relief channel 5121 conducts the water outlet pipe 300 and the pressure relief opening 5111, and the water inlet channel 5122 and the water outlet channel 5123 are closed; when the water pressure detecting device detects that the water pressure of the water inlet pipe 200 is greater than the water pressure of the water outlet pipe 300, the control valve core 512 rotates to a water inlet and outlet conducting position for conducting the closing of the water inlet channel 5122, the water outlet channel 5123 and the pressure relief opening 5111.
Further, when the tap water valve is controlled to be opened during hot water use, the control module controls the valve core 512 to rotate to the water inlet and outlet conducting position through the driving module when the water pressure detecting device detects that the water pressure of the water inlet pipe 200 is greater than the water pressure of the water outlet pipe 300; when the tap water valve is closed when the hot water is not used, the water pressure detection device detects that the water pressure of the water inlet pipe 200 and the water outlet pipe 300 is equal, and the control module controls the valve core 512 to rotate to the pressure relief position through the driving module.
The foregoing description is only illustrative of the preferred embodiment of the present invention, and is not to be construed as limiting the invention, but is to be construed as limiting the invention to any and all simple modifications, equivalent variations and adaptations of the embodiments described above, which are within the scope of the invention, may be made by those skilled in the art without departing from the scope of the invention.
Claims (9)
1. A water heater, comprising:
a water tank;
the water pressure detection device is used for detecting the water pressure difference information of the water inlet end and the water outlet end of the water tank;
the pressure relief device is used for controlling whether to relieve pressure of the water tank or not based on the water pressure difference information detected by the water pressure detection device;
the water heater also comprises a water inlet pipe and a water outlet pipe which are respectively communicated with the water tank;
the water pressure detection device comprises water pressure sensors respectively arranged on the water inlet pipe and the water outlet pipe;
the pressure relief device is provided with a pressure relief opening communicated with the outside, and when the water pressure detection device detects that the water pressure of the water inlet pipe and the water outlet pipe is in a balanced state, the pressure relief opening is controlled to be communicated with the water outlet pipe, so that the pressure relief of the water tank is realized.
2. A water heater according to claim 1, wherein the pressure relief device comprises:
the pressure release valve is provided with a pressure release opening;
the driving module drives the pressure release valve to enable the pressure release opening to be communicated or blocked with the water tank;
and the control module is used for controlling the driving module to drive the pressure relief valve to act according to the received water pressure difference information fed back by the water pressure detection device.
3. A water heater according to claim 2, wherein the pressure relief valve comprises:
a valve casing provided with a pressure relief opening;
the valve core is rotatably arranged in the valve shell;
the valve core is internally provided with a pressure relief channel, a water inlet channel and a water outlet channel;
the pressure relief device is arranged on the water inlet pipe and the water outlet pipe and is provided with a pressure relief state and a water inlet and outlet conducting state capable of conducting the water inlet pipe and the water outlet pipe;
in the pressure relief state, the valve core rotates to a pressure relief position where the pressure relief channel is communicated with the water outlet pipe and the pressure relief opening, and the water inlet channel and the water outlet channel are closed;
when the water inlet and outlet is in a conducting state, the valve core rotates to a water inlet channel and a water outlet channel which are respectively communicated with a water inlet pipe, a water outlet pipe and a pressure release channel, and the water inlet and outlet is in a closed conducting position.
4. A water heater as claimed in claim 3, wherein:
the water inlet pipe includes:
the first section of water inlet pipe, the inlet end is connected with an external water source, and the outlet end is connected with a pressure relief valve;
the inlet end of the second section of water inlet pipe is connected with the pressure relief valve, and the outlet end of the second section of water inlet pipe is connected with the water tank;
the water outlet pipe comprises:
the first section of water outlet pipe is connected with the pressure release valve at the inlet end and the spraying structure at the outlet end;
the second section of water outlet pipe has inlet end connected to the water tank and outlet end connected to the pressure relief valve;
the water pressure sensor is respectively arranged on the first section of water inlet pipe and the first section of water outlet pipe;
in the water inlet and outlet conduction state, the water inlet end of the water inlet channel is communicated with the outlet end of the first section of water inlet pipe, and the water outlet end of the water inlet channel is communicated with the inlet end of the second section of water inlet pipe; the water inlet end of the water outlet channel is communicated with the outlet end of the second section of water outlet pipe, and the water outlet end of the water outlet channel is communicated with the outlet section of the first section of water outlet pipe;
in the pressure release state, the pressure release water inlet end of the pressure release channel is communicated with the outlet end of the second section of water outlet pipe, and the water outlet end of the pressure release channel is communicated with the pressure release opening.
5. The water heater as recited in claim 4, wherein the valve housing is further provided with:
the first water inlet connection port is connected with the outlet end of the first section of water inlet pipe;
the second water inlet connection port is connected with the inlet end of the second section of water inlet pipe;
the first water outlet connection port is connected with the inlet end of the first section of water outlet pipe;
the second water outlet connector is connected with the outlet end of the second section of water outlet pipe;
when the water inlet and outlet are in a conducting state, the water inlet end of the water inlet channel is communicated with the first water inlet connecting port, and the water outlet end of the water inlet channel is communicated with the second water inlet connecting port; the water inlet end of the water outlet channel is communicated with the second water outlet connecting port, and the water outlet end of the water outlet channel is communicated with the first water outlet connecting port;
and in the pressure relief state, the pressure relief inlet end of the pressure relief channel is communicated with the second water outlet connector, and the pressure relief outlet end of the pressure relief channel is communicated with the pressure relief opening.
6. A control method of a water heater as claimed in any one of claims 1 to 5, wherein the control method comprises:
acquiring the water pressure difference information of a water inlet end and a water outlet end of a water tank;
and judging whether the water pressure difference information reaches a preset threshold value, and if so, controlling the pressure relief device to relieve the pressure of the water tank.
7. The control method of a water heater according to claim 6, further comprising:
when the water pressure of the water inlet pipe and the water outlet pipe is in a balanced state, controlling the pressure relief valve to act, opening the pressure relief opening and relieving the pressure of the water tank; when the water pressure of the water inlet pipe is larger than the water pressure of the water outlet pipe, the pressure relief device is controlled to stop pressure relief.
8. The control method of a water heater as recited in claim 7, comprising: when the water pressure detection device detects that the water pressure of the water inlet pipe and the water outlet pipe is equal, the valve core is controlled to rotate to a pressure relief position where the pressure relief channel is communicated with the water outlet pipe and the pressure relief opening, and the water inlet channel and the water outlet channel are closed;
when the water pressure detection device detects that the water pressure of the water inlet pipe is larger than the water pressure of the water outlet pipe, the control valve core rotates to a water inlet and outlet conduction position where the water inlet channel and the water outlet channel are conducted and the pressure relief opening is closed.
9. The control method of a water heater as recited in claim 8, comprising:
when hot water is used, a running water valve is controlled to be opened, and when the water pressure detection device detects that the water pressure of the water inlet pipe is greater than the water pressure of the water outlet pipe, the control module controls the valve core to rotate to a water inlet and outlet conducting position through the driving module;
when the hot water is not used, the running water valve is closed, the water pressure detection device detects that the water pressure of the water inlet pipe is equal to the water pressure of the water outlet pipe, and the control module controls the valve core to rotate to the pressure relief position through the driving module.
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| CN202110696406.8A CN114963550B (en) | 2021-06-23 | 2021-06-23 | Water heater and control method |
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| CN202110696406.8A CN114963550B (en) | 2021-06-23 | 2021-06-23 | Water heater and control method |
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| CN112484300A (en) * | 2020-12-16 | 2021-03-12 | 广东万家乐燃气具有限公司 | Electric water heater with function of preventing water pressure of inner container from being too high |
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2021
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| CN103363156A (en) * | 2013-07-29 | 2013-10-23 | 王树 | Multifunctional safety valve |
| CN104110511A (en) * | 2013-10-31 | 2014-10-22 | 芜湖美的厨卫电器制造有限公司 | Intake, exhaust and drainage solenoid valve and water heater with same |
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