CN110657259A - Bypass flow valve and gas water heater comprising same - Google Patents
Bypass flow valve and gas water heater comprising same Download PDFInfo
- Publication number
- CN110657259A CN110657259A CN201910957974.1A CN201910957974A CN110657259A CN 110657259 A CN110657259 A CN 110657259A CN 201910957974 A CN201910957974 A CN 201910957974A CN 110657259 A CN110657259 A CN 110657259A
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- Prior art keywords
- valve
- magnet
- memory alloy
- bypass flow
- valve seat
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K11/00—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves
- F16K11/02—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit
- F16K11/04—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only lift valves
-
- 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
- F24H9/0005—Details for water heaters
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Temperature-Responsive Valves (AREA)
Abstract
The invention discloses a bypass flow valve and a gas water heater comprising the same. The bypass flow valve includes: the valve comprises a shell, a valve seat, a memory alloy spring, a first magnet, a second magnet, a valve core and a flexible sealing element, wherein the valve seat, the memory alloy spring, the first magnet and the second magnet are mutually attracted; the valve seat is fixed relative to the shell; the valve core is a hollow cylindrical component, a first end of the valve core is connected with the cold water inlet through a flexible sealing piece, and a second end of the valve core is arranged opposite to the valve seat; the memory alloy spring biases the valve core to move towards the direction away from the valve seat; the first magnet is fixed on the valve core, and the second magnet is fixed on the valve seat. The bypass flow valve adopts the memory alloy spring, and the water inflow of cold water can be adjusted according to the temperature of flowing hot water through the cooperation of the memory alloy spring and the magnet, so that the temperature of the flowing mixed water is adjusted, and the phenomenon that the temperature of the flowing mixed water is too high or too low is avoided. The gas water heater can adjust the water outlet temperature and prevent the water outlet temperature from suddenly rising or dropping.
Description
Technical Field
The invention relates to the field of machine manufacturing, in particular to a bypass flow valve and a gas water heater comprising the same.
Background
The water outlet temperature of the existing gas water heater is adjusted by adjusting the heating amplitude, and users only can adjust the water outlet temperature through a water mixing valve of a water tap if the water outlet temperature needs to be adjusted again, however, the adjustment of the heating amplitude of the gas water heater has hysteresis, and when the user adjusts the hot water supply down, the inside of the gas water heater can correspondingly reduce the heating amplitude, namely reduce the firepower to avoid the water temperature from rising, but the heat exchanger can not be cooled down quickly, so the temperature of the outlet water of the gas water heater can be increased quickly in a short time, a user is easily scalded, and similarly, when the user adjusts the hot water supply, the heating amplitude of the interior of the gas water heater can be correspondingly increased, namely the firepower is increased to avoid the water temperature from dropping, however, the heat exchanger cannot be heated up quickly, so that the temperature of the outlet water of the gas water heater is still reduced quickly in a short time, and users are easy to freeze.
When the water yield of the existing gas water heater is adjusted by a user, the problem that the water temperature is suddenly cooled and suddenly heated can occur, so that the use experience of the user is extremely poor.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provides a bypass flow valve and a gas water heater comprising the same.
The invention solves the technical problems through the following technical scheme:
a bypass flow valve, comprising: the valve comprises a shell, a valve seat, a memory alloy spring, a first magnet, a second magnet, a valve core and a flexible sealing element, wherein the valve seat, the memory alloy spring, the first magnet and the second magnet are mutually attracted;
the shell is provided with a cold water inlet, a hot water inlet and a hot water outlet;
the valve seat is fixed relative to the housing;
the valve core is a hollow cylindrical member, a first end of the valve core is connected with the cold water inlet through the flexible sealing piece so that cold water can only pass through the inner part of the valve core, and a second end of the valve core is arranged opposite to the valve seat;
the memory alloy spring biases the valve element to move the valve element in a first direction;
the first magnet is fixed on the valve core, and the second magnet is fixed on the valve seat;
the first direction is a direction in which the valve core is far away from the valve seat.
Preferably, the valve seat is of a cylindrical structure, and the end part of the valve seat close to the valve core is sharpened.
Preferably, the memory alloy spring is sleeved on the valve seat.
Preferably, the first magnet and the second magnet are both arranged inside the memory alloy spring.
Preferably, the housing comprises a hot water pipe and a cold water pipe connected to the hot water pipe, and the memory alloy spring is arranged in the hot water pipe.
Preferably, the outer peripheral surface of the valve core is provided with an abutting part, and the memory alloy spring abuts against the abutting part.
Preferably, the first magnet is provided on a side of the abutting portion close to the valve seat.
Preferably, the flexible seal is a membrane.
Preferably, the first magnet is an annular member sleeved on the valve element, and the second magnet is an annular member sleeved on the valve element.
The gas water heater is characterized in that the bypass flow valve is arranged in the water outlet pipeline of the gas water heater.
The positive progress effects of the invention are as follows: the bypass flow valve adopts the memory alloy spring, and the water inflow of cold water can be adjusted according to the temperature of flowing hot water through the cooperation of the memory alloy spring and the magnet, so that the temperature of the flowing mixed water is adjusted, and the phenomenon that the temperature of the flowing mixed water is too high or too low is avoided. The gas water heater can adjust the water outlet temperature and prevent the water outlet temperature from suddenly rising or dropping.
Drawings
Fig. 1 is a schematic structural view of a gas water heater according to a preferred embodiment of the present invention.
Fig. 2 is another structural schematic view of a gas water heater according to a preferred embodiment of the present invention.
FIG. 3 is a perspective view of a bypass flow valve according to a preferred embodiment of the present invention.
FIG. 4 is a schematic cross-sectional view of a bypass flow valve according to a preferred embodiment of the present invention.
Description of reference numerals:
Casing 110
Hot water inlet 113
Cold water inlet 115
Valve seat 120
Convex ring 121
Valve core 150
Abutting portion 151
Air inlet joint 201
Water inlet joint 202
Water outlet joint 203
Proportional valve assembly 204
Water valve assembly 205
Fan assembly 206
Combustor can 208
Electric controller assembly 209
Heat exchanger assembly 210
Gas collecting channel assembly 211
First direction X
Second direction Y
Detailed Description
The present invention is further illustrated by way of example and not by way of limitation in the scope of the following examples in connection with the accompanying drawings.
As shown in fig. 1-2, the gas water heater 200 includes: the gas-fired boiler comprises an air inlet connector 201, a water inlet connector 202, a water outlet connector 203, a proportional valve assembly 204, a water quantity valve assembly 205, a fan assembly 206, a gas distributor 100, a combustion chamber box 208, an electric controller assembly 209, a heat exchanger assembly 210 and a gas collecting hood assembly 211.
The proportional valve assembly 204 is used for controlling the on-off of gas and the size of gas flow, the water quantity valve assembly 205 is used for detecting a water flow signal and transmitting the water flow signal to the electric controller assembly 209, the fan assembly 206 is used for controlling the air intake, the gas distributor 100 is used for distributing and adjusting the gas flow, the electric controller assembly 209 is used for detecting a signal and outputting a control signal to control the whole machine, the heat exchanger assembly 210 is used for absorbing the heat of the flue gas to heat cold water in the flue gas into hot water, and the gas collecting hood assembly 211 is used for discharging the flue gas.
Cold water enters from the water inlet connection 202 and flows through the heat exchanger assembly 210 and exits from the water outlet connection 203. The gas enters from the gas inlet connector 201, passes through the proportional valve assembly 204, enters the gas distribution chamber, is sprayed into the combustion chamber box 208 through the nozzle 123 of the gas distribution chamber, meanwhile, the fan component 206 conveys air to the interior of the combustion chamber box 208, the gas and the air are mixed and combusted in the interior of the combustion chamber box 208, the generated flue gas flows upwards and flows through the heat exchanger component 210, and finally the flue gas flows out from the gas collecting hood component 211.
The gas water heater 200 further includes: a water inlet pipe 301 and a water outlet pipe 302, wherein cold water flows through the water inlet pipe 301 to be heated in the gas water heater 200, and finally flows out through the water outlet pipe 302 to be supplied to a user.
A bypass flow valve is arranged in the water outlet pipeline 302 and is respectively communicated with the water outlet pipeline 302 and the water inlet pipeline 301.
As shown in fig. 3-4, the bypass flow valve comprises: the valve comprises a shell 110, a valve seat 120 arranged inside the shell 110, a memory alloy spring 130, a first magnet 141 and a second magnet 142 which are mutually attracted, a valve core 150 and a flexible sealing member 160.
The inlet pipe 301 is connected to the cold water inlet 115 and the hot water pipe 111 is connected to the outlet pipe 302.
The valve seat 120 is fixed relative to the housing 110.
In the present embodiment, the valve seat 120 has a cylindrical structure, and the end of the valve seat 120 close to the valve core 150 is sharpened. By sharpening the end, the valve seat 120 and the valve core 150 form a socket structure, and a gap between the valve seat 120 and the valve core 150 forms a flow passage for cold water. The present invention is not limited thereto and those skilled in the art can select other forms of valve seat 120 as desired.
The wall of the hot water pipe 111 is provided with an opening, and the valve seat 120 is fixed to the wall of the hot water pipe 111 through the opening, preferably, the valve seat 120 is fixed to the wall by screwing, but the present invention is not limited to this, and a person skilled in the art may select means such as laser welding and adhesion to fix the valve seat 120 to the wall as needed, or fix the valve seat without the aid of the opening.
The outer circumferential surface of the valve seat 120 is provided with a convex ring 121, and the convex ring 121 is used to define the position of the memory alloy spring 130. It will be understood by those skilled in the art that the raised ring 121 is not required and that the raised ring 121 may not be provided and the position of the memory alloy spring 130 may be defined in other ways.
In this embodiment, most of the memory alloy spring 130 is disposed in the hot water pipe 111, so that the hot water directly contacts the memory alloy spring 130, and the memory alloy spring 130 can adjust its deformation according to the temperature of the directly contacted hot water, thereby adjusting the size of the opening between the valve core 150 and the valve seat 120. However, the present invention is not limited thereto, and by reasonable layout and proper adjustment, all of the memory alloy spring 130 can be disposed in the hot water pipe 111, or most of the memory alloy spring 130 can be disposed in the cold water pipe 112, which does not affect the function of the memory alloy spring 130.
The memory alloy spring 130 is sleeved on the valve seat 120. However, the present invention is not limited thereto, and the memory alloy spring 130 may be a plurality of springs disposed around the valve seat 120.
The material of the memory alloy spring 130 is common SMA, the common SMA mainly comprises Ni-Ti-based SMA, Cu-based SMA, Fe-based SMA, Ag-based SMA, Au-based SMA, Co-based SMA and the like, wherein the Ni-Ti-based SMA has the best performance and the widest application. For example, AgCd, AuCd, CuAlNi, CuAuZn, CuSn, CuZn, InTi, NiAl, TiNi, FePt, FePd, MnCu, etc. may all undergo a martensitic phase change at a temperature below 100 ℃, thereby deforming the manufactured spring.
In this embodiment, the memory alloy spring 130 is preferably made of a material that can be deformed (restored) in an environment of-50 to 100 ℃, such as TiNi.
The first magnet 141 is fixed to the valve core 150, and the second magnet 142 is fixed to the valve seat 120. The first magnet 141 and the second magnet 142 may be fixed by adhesion, for example, with waterproof glue or the like. In other embodiments, the valve body 150 may be formed of two members engaged with each other, and the first magnet 141 is engaged between the two members to be fixed, and similarly, the valve seat 120 may be formed of two members engaged with each other, and the second magnet 142 is engaged between the two members to be fixed.
The first and second magnets 141 and 142 are both provided inside the memory alloy spring 130 so as not to interfere with the deformation of the memory alloy spring 130.
In the present embodiment, the first magnet 141 is an annular member sleeved on the valve element 150, and the second magnet 142 is an annular member sleeved on the valve element 150. However, the present invention is not limited thereto, and the first magnet 141 may be one or more cylinders inserted into the valve core 150, and the second magnet 142 may be one or more cylinders or blocks inserted into the valve seat 120.
The first and second magnets 141 and 142 may be permanent magnets, and the material thereof may be natural magnets or synthetic magnets, such as neodymium iron boron magnets (Nd)2Fe14B magnet), samarium cobalt magnet (SmCo magnet), ALNiCO magnet (ALNiCO magnet), iron chromium cobalt magnet (FeCrCo magnet), or sintered rubidium iron boron, etc., and may be a magnetic plastic.
The valve core 150 is a hollow cylindrical member, a first end of the valve core 150 is connected to the cold water inlet 115 through a flexible seal 160 so that cold water can pass only from the inside of the valve core 150, and a second end of the valve core 150 is disposed facing the valve seat 120.
The memory alloy spring 130 biases the valve spool 150 to move the valve spool 150 toward the first direction X. The first direction X is a direction in which the spool 150 moves away from the valve seat 120, and the second direction Y is opposite to the first direction X.
The outer peripheral surface of the valve core 150 is provided with an abutting portion 151, and the memory alloy spring 130 abuts against the abutting portion 151. In the present embodiment, the memory alloy spring 130 is defined therebetween by the abutment 151 and the collar 121. In the present embodiment, the abutting portion 151 has an annular structure, but the present invention is not limited to this, and a person skilled in the art may set the abutting portion 151 to have another shape or structure as needed.
The first magnet 141 is provided on the side of the abutting portion 151 close to the valve seat 120, so that there is no interference between the first magnet 141 and the second magnet 142, and the attraction therebetween is not prevented.
In the present embodiment, the flexible seal 160 is a film. However, the present invention is not limited thereto, and those skilled in the art may select other members as the flexible sealing member 160 as long as it is flexibly deformable to provide a moving space for the valve core 150 and to achieve sealing.
The inner wall of the cold water pipe 112 is provided with an annular protrusion 170, one end of the flexible sealing member 160 is connected to the annular protrusion 170, and the other end of the flexible sealing member 160 is connected to the first end of the valve core 150. Although not shown, the flexible seal 160 is typically secured to the annular projection 170 by an annular fastener, and the flexible seal 160 is connected to the valve core 150 by a clip or other means.
The components of the bypass flow valve other than the first and second magnets 141, 142 are preferably constructed of non-ferromagnetic materials so as not to affect the attractive force between the first and second magnets 141, 142.
The operation of the bypass flow valve is briefly described below.
When hot water enters from the hot water inlet 113, the hot water contacts the memory alloy spring 130, the memory alloy spring 130 deforms (recovers) according to the temperature of the hot water, and if the temperature of the hot water is higher than a set value (an attractive force between the first magnet 141 and the second magnet 142), the deformation (recovery amount) of the memory alloy spring 130 is increased, the valve element 150 is pushed to move in the first direction X, the opening between the valve element 150 and the valve seat 120 is increased, the cold water entering amount is increased, and the cold water is mixed with the hot water so that the temperature of the hot water flowing out of the hot water outlet 114 is not too high or the original temperature is maintained. Similarly, if the temperature of the hot water is lower than the set value (the attractive force between the first magnet 141 and the second magnet 142), the deformation (recovery amount) of the memory alloy spring 130 is reduced, and the valve body 150 moves in the second direction Y by the attractive force between the first magnet 141 and the second magnet 142, so that the opening between the valve body 150 and the valve seat 120 is reduced, the amount of cold water entering is reduced, and the cold water mixed with the hot water is reduced, so that the temperature of the hot water flowing out of the hot water outlet 114 is not too low, or the original temperature is maintained.
For the gas water heater, when the user adjusts the amount of hot water, correspondingly, the gas water heater can also adjust the firepower of the gas water heater, so as to prevent the water temperature from rising due to the fact that less water is heated by the same firepower. However, this fire adjustment is hysteretic, because the heat exchanger will heat the cold water to a temperature that will increase the temperature of the water flowing into the outlet conduit (above the original temperature), and the bypass flow valve will now operate to introduce more cold water so that the temperature of the water flowing out of the outlet conduit will not be too high or will remain at the original temperature. Similarly, when the user increases the amount of hot water, the gas water heater adjusts its own heating power accordingly, so that more water is heated with the same heating power, resulting in a decrease in water temperature. However, this fire adjustment is hysteretic, because of which the heat exchanger heating the cold water will still cause the temperature of the water flowing into the outlet conduit to drop (below the original temperature), at which time the bypass flow valve acts to reduce the introduction of cold water so that the temperature of the water flowing out of the outlet conduit will not be too low or will remain at the original temperature.
The temperature setting of the gas water heater, the fire power adjustment, the water temperature setting, the cold water introduction amount, the opening size between the valve core 150 and the valve seat 120, and the size of the attractive force between the first magnet 141 and the second magnet 142 can all be set according to actual needs and can be obtained through experience of persons skilled in the art or existing technical formulas, and therefore, the details are not repeated here.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, are merely for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed in a particular orientation, and be operated, and therefore, should not be construed as limiting the present invention unless otherwise specified herein.
While specific embodiments of the invention have been described above, it will be appreciated by those skilled in the art that this is by way of example only, and that the scope of the invention is defined by the appended claims. Various changes and modifications to these embodiments may be made by those skilled in the art without departing from the spirit and scope of the invention, and these changes and modifications are within the scope of the invention.
Claims (10)
1. A bypass flow valve, comprising: the valve comprises a shell, a valve seat, a memory alloy spring, a first magnet, a second magnet, a valve core and a flexible sealing element, wherein the valve seat, the memory alloy spring, the first magnet and the second magnet are mutually attracted;
the shell is provided with a cold water inlet, a hot water inlet and a hot water outlet;
the valve seat is fixed relative to the housing;
the valve core is a hollow cylindrical member, a first end of the valve core is connected with the cold water inlet through the flexible sealing piece so that cold water can only pass through the inner part of the valve core, and a second end of the valve core is arranged opposite to the valve seat;
the memory alloy spring biases the valve element to move the valve element in a first direction;
the first magnet is fixed on the valve core, and the second magnet is fixed on the valve seat;
the first direction is a direction in which the valve core is far away from the valve seat.
2. The bypass flow valve of claim 1 wherein the valve seat is cylindrical in configuration and the end of the valve seat adjacent the valve spool is sharpened.
3. The bypass flow valve of claim 2, wherein the memory alloy spring is nested in the valve seat.
4. The bypass flow valve of claim 3, wherein the first magnet and the second magnet are both disposed within the memory alloy spring.
5. The bypass flow valve of claim 1 wherein the housing includes a hot water conduit and a cold water conduit connected to the hot water conduit, the memory alloy spring being disposed within the hot water conduit.
6. The bypass flow valve of claim 1, wherein the valve spool has an abutment on the outer peripheral surface thereof, and the memory alloy spring abuts against the abutment.
7. The bypass flow valve of claim 6, wherein the first magnet is disposed on a side of the abutment proximate the valve seat.
8. The bypass flow valve of claim 1, wherein the flexible seal is a membrane.
9. The bypass flow valve of claim 1, wherein the first magnet is an annular member that is sleeved on the valve spool and the second magnet is an annular member that is sleeved on the valve spool.
10. A gas water heater characterized in that a bypass flow valve according to any one of claims 1-9 is provided in the water outlet pipe of the gas water heater.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910957974.1A CN110657259B (en) | 2019-10-10 | 2019-10-10 | Bypass flow valve and gas water heater comprising same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910957974.1A CN110657259B (en) | 2019-10-10 | 2019-10-10 | Bypass flow valve and gas water heater comprising same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110657259A true CN110657259A (en) | 2020-01-07 |
| CN110657259B CN110657259B (en) | 2021-11-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910957974.1A Active CN110657259B (en) | 2019-10-10 | 2019-10-10 | Bypass flow valve and gas water heater comprising same |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115560122A (en) * | 2022-12-05 | 2023-01-03 | 南京大学 | Water pipe valve for limiting highest temperature of water flow and working method thereof |
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| GB2165967A (en) * | 1984-10-19 | 1986-04-23 | Donald Hugh Campbell Mackay | Improvements in and relating to water supply systems |
| CN2771603Y (en) * | 2004-09-10 | 2006-04-12 | 董民超 | Radiator constant temperature valve regulator |
| CN201462080U (en) * | 2009-04-29 | 2010-05-12 | 余玉存 | Water control valve |
| CN202252177U (en) * | 2011-09-07 | 2012-05-30 | 宁波日月制冷设备有限公司 | Magnetic one-way valve |
| CN206207717U (en) * | 2016-10-27 | 2017-05-31 | 广东万家乐燃气具有限公司 | A kind of central fuel gas water heating device with memory alloy one-way valve |
| CN108397575A (en) * | 2017-02-07 | 2018-08-14 | 苏俊秀 | Normally opened check valve |
| CN209067930U (en) * | 2018-11-14 | 2019-07-05 | 中山市力科电器有限公司 | A kind of gas heater idle water yield self-checking device |
-
2019
- 2019-10-10 CN CN201910957974.1A patent/CN110657259B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2165967A (en) * | 1984-10-19 | 1986-04-23 | Donald Hugh Campbell Mackay | Improvements in and relating to water supply systems |
| CN2771603Y (en) * | 2004-09-10 | 2006-04-12 | 董民超 | Radiator constant temperature valve regulator |
| CN201462080U (en) * | 2009-04-29 | 2010-05-12 | 余玉存 | Water control valve |
| CN202252177U (en) * | 2011-09-07 | 2012-05-30 | 宁波日月制冷设备有限公司 | Magnetic one-way valve |
| CN206207717U (en) * | 2016-10-27 | 2017-05-31 | 广东万家乐燃气具有限公司 | A kind of central fuel gas water heating device with memory alloy one-way valve |
| CN108397575A (en) * | 2017-02-07 | 2018-08-14 | 苏俊秀 | Normally opened check valve |
| CN209067930U (en) * | 2018-11-14 | 2019-07-05 | 中山市力科电器有限公司 | A kind of gas heater idle water yield self-checking device |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115560122A (en) * | 2022-12-05 | 2023-01-03 | 南京大学 | Water pipe valve for limiting highest temperature of water flow and working method thereof |
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| CN110657259B (en) | 2021-11-19 |
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