CN112855987A - Zero cold water one-way valve for water heater - Google Patents
Zero cold water one-way valve for water heater Download PDFInfo
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- CN112855987A CN112855987A CN202110028124.0A CN202110028124A CN112855987A CN 112855987 A CN112855987 A CN 112855987A CN 202110028124 A CN202110028124 A CN 202110028124A CN 112855987 A CN112855987 A CN 112855987A
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- pipe section
- water pipe
- cold water
- hot water
- cold
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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
- F16K11/06—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only sliding valves, i.e. sliding closure elements
- F16K11/065—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only sliding valves, i.e. sliding closure elements with linearly sliding closure members
- F16K11/07—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only sliding valves, i.e. sliding closure elements with linearly sliding closure members with cylindrical slides
- F16K11/0716—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only sliding valves, i.e. sliding closure elements with linearly sliding closure members with cylindrical slides with fluid passages through the valve member
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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
- F16K15/00—Check valves
- F16K15/02—Check valves with guided rigid valve members
- F16K15/06—Check valves with guided rigid valve members with guided stems
- F16K15/063—Check valves with guided rigid valve members with guided stems the valve being loaded by a spring
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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
- F16K15/00—Check valves
- F16K15/18—Check valves with actuating mechanism; Combined check valves and actuated valves
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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
- F16K27/00—Construction of housing; Use of materials therefor
- F16K27/04—Construction of housing; Use of materials therefor of sliding valves
- F16K27/041—Construction of housing; Use of materials therefor of sliding valves cylindrical slide valves
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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
- F16K37/00—Special means in or on valves or other cut-off apparatus for indicating or recording operation thereof, or for enabling an alarm to be given
- F16K37/0075—For recording or indicating the functioning of a valve in combination with test equipment
- F16K37/0091—For recording or indicating the functioning of a valve in combination with test equipment by measuring fluid parameters
Abstract
The invention discloses a zero-cold-water one-way valve for a water heater, which comprises a valve body, a one-way plug, a first elastic part, a connecting rod mechanism and a second elastic part. The invention senses the water pressure in the hot water pipe section by arranging the connecting rod mechanism, which is equivalent to monitoring the work of a circulating booster pump of the gas water heater, so as to judge the start and stop of the check valve, thereby realizing the effect of preventing the water heater from being started by mistake. The invention has the advantages of high reliability of preventing false start, small flow resistance in the circulating process, adjustable starting pressure and strong applicability.
Description
Technical Field
The invention relates to a zero-cold-water one-way valve for a water heater.
Background
The zero-cold-water gas water heater has a preheating function and has certain requirements on installation and use environments. The zero-cold-water heater is communicated with the cold water pipe and the hot water pipe through the zero-cold-water one-way valve, when a cold water faucet of a wash stand, a flushing toilet, shower cold water or a washing machine is opened, tap water is shunted, most of the tap water flows to a water consumption point through the cold water pipe, and a small part of the tap water sequentially flows through the water heater, the hot water pipe and the zero-cold-water one-way valve and then flows to the water consumption point, wherein the ratio of shunting of the hot water pipe to shunting of the cold water pipe is close to. The starting flow of a zero-cold water gas water heater in the market is generally 2.5L/min; when the water consumption of tap water reaches more than 10L/min, the shunt water amount of the hot water pipe exceeds the starting flow of the water heater, so that the water heater is started by mistake and ignition is influenced, and the user experience is influenced.
In the prior art, a check valve device with a flow limiting mechanism is usually adopted to control the flow of a water consumption point, for example, the flow limiting mechanism is arranged at a cold water outlet connected with the water consumption point on the check valve device, so that the pressure of a cold water pipe is reduced, the pressure of a hot water pipe is correspondingly reduced, namely the flow of the hot water pipe is controlled, and the condition of false start is reduced. However, this method still has a problem that the occurrence of false start cannot be completely prevented and the flow resistance is large.
Disclosure of Invention
The technical problem to be solved by the invention is to overcome the defects in the prior art and provide a zero-cold-water one-way valve for a water heater.
The invention solves the technical problems through the following technical scheme:
a zero cold water check valve for a water heater comprising:
the valve body is provided with a cold water pipe section, a hot water pipe section and an installation section which is arranged along the radial direction of the hot water pipe section in a protruding mode, the cold water pipe section is provided with a cold water inlet and a cold water outlet, the hot water pipe section is provided with a hot water inlet and a hot water outlet, and the installation section is provided with a stroke cavity;
the valve comprises a one-way plug and a first elastic piece, wherein two ends of the first elastic piece are respectively connected with the one-way plug and one end of the valve body, and the one-way plug is used for enabling water to flow from the hot water pipe section to the cold water pipe section and disconnecting the cold water pipe section and the hot water pipe section;
the connecting rod mechanism comprises an input end and an output end which are positioned in the stroke cavity, the input end is provided with a pressure surface facing the hot water pipe section, and two ends of the second elastic piece are respectively connected with the input end and the end part of the installation section;
the linkage is configured to: in the initial state and when the water pressure of the hot water pipe section is lower than the first pressure, the output end restrains the displacement freedom degree of the one-way plug towards one side of the cold water pipe section; when the water pressure of the hot water pipe section reaches a first pressure, the input end compresses the second elastic piece under the action of the water pressure to drive the output end to rotate, the output end is connected with the one-way plug in a sliding mode, and the one-way plug moves towards one side of the cold water pipe section to enable the cold water pipe section to be communicated with the hot water pipe section.
Preferably, the input end comprises a disc body, the disc body is provided with the pressure surface, and in an initial state, the side surface of the disc body abuts against the inner wall of the stroke cavity.
Preferably, the disc and the end of the travel chamber facing the hot water pipe section have tapered sides;
and/or one end of the disc body facing away from the hot water pipe section is provided with a conical side surface;
and/or the end surface of one end of the disc body, which is far away from the hot water pipe section, is provided with a plane for being attached to the end surface of the stroke cavity;
and/or the disc body comprises a first disc part and a second disc part which are symmetrically arranged, the centers of the first disc part and the second disc part are fixedly connected through a short shaft, and a gap is formed between the first disc part and the second disc part.
Preferably, the end of the tray body is provided with a guide part, the guide part is arranged in a protruding manner or a recessed manner relative to the end face of the tray body, and the second elastic piece is inserted into or sleeved with the guide part.
Preferably, the mounting section includes:
the installation pipe body is communicated with the inside of the hot water pipe section;
the mounting end cover is detachably connected with the mounting pipe body and is provided with a mounting hole for accommodating the second elastic piece; and
and the mounting plug is fixedly connected with the mounting end cover and restrains the second elastic piece in the mounting hole.
Preferably, the disk body partially penetrates into the mounting hole and is in sliding connection with the mounting hole.
Preferably, the link mechanism further comprises a first connecting rod and a second connecting rod, two ends of the first connecting rod are respectively hinged with the input end and one end of the second connecting rod, and the other end of the second connecting rod is fixedly connected with the output end.
Preferably, the one-way plug comprises a sliding piece, one of the sliding piece and the output end is a sliding rod, and the other one of the sliding piece and the output end is provided with a sliding groove for the sliding rod to penetrate through;
the surface of the sliding rod is provided with a limit guide part which is arranged in a protruding mode, and the sliding groove is provided with a guide groove which extends along the axial direction of the sliding rod; when the limiting guide portion is abutted to the end face of the sliding groove, the output end restrains the one-way plug to move towards the cold water pipe section side, and when the sliding piece and the output end rotate relatively and the guiding limiting portion corresponds to the guiding groove, the output end is connected with the one-way plug in a sliding mode.
Preferably, the unidirectional plug comprises a barrel-shaped plug main body and a sliding rod, and one end of the sliding rod is fixed at the end part of the plug main body; the limiting guide part is of a plate-shaped structure extending along the axial direction of the sliding rod.
Preferably, the side wall of the plug main body is provided with circulation ports, and when the cold water pipe section is communicated with the hot water pipe section, the two circulation ports are communicated with the cold water inlet and the cold water outlet in a one-to-one correspondence manner.
Preferably, the zero-cold-water one-way valve for the water heater further comprises a sleeve, two ends of the sleeve are respectively abutted to the end portion of the valve body and the inner wall of the valve body, the side wall of the sleeve is provided with water passing holes formed at a plurality of intervals, the side wall of the plug main body is connected with the inner wall of the sleeve in a sliding mode, and the first elastic piece is arranged in the sleeve.
Preferably, one end, facing the cold water pipe section, of the one-way plug is provided with a guide post in a protruding mode, a guide cylinder is arranged in the sleeve, the guide post is connected with the guide cylinder in a sliding mode, and the first elastic piece is arranged in the guide cylinder and abutted to the guide post.
Preferably, the side surface of the guide post is provided with a convex part which protrudes outwards along the radial direction, and the guide cylinder is provided with a guide groove for the convex part to slide;
and/or the guide column is a hollow body;
and/or the end part of the valve body is provided with a protruding column which extends into the guide cylinder, and the first elastic piece is sleeved on the protruding column.
Preferably, the cold water inlet and the cold water outlet are located on opposite sides of the valve body;
and/or the hot water inlet is arranged right opposite to the one-way plug.
On the basis of the common knowledge in the field, the above preferred conditions can be combined randomly to obtain the preferred embodiments of the invention.
The positive progress effects of the invention are as follows:
according to the invention, the water pressure in the hot water pipe section is sensed by arranging the connecting rod mechanism, which is equivalent to monitoring the work of the circulating booster pump of the gas water heater, so that the start and stop of the check valve are judged, and the effect of preventing the water heater from being started by mistake is realized. The invention has the advantages of high reliability of preventing false start, small flow resistance in the circulating process, adjustable starting pressure and strong applicability.
Drawings
FIG. 1 is a schematic structural diagram of a zero cold water check valve for a water heater according to an embodiment of the present invention;
FIG. 2 is an exploded view of a zero cold water check valve for a water heater according to an embodiment of the present invention;
FIG. 3 is an internal structural view of a zero cold water check valve for a water heater according to an embodiment of the present invention, in which a valve body is hidden;
FIG. 4 is a cross-sectional view of a zero cold water check valve for a water heater according to an embodiment of the present invention;
FIG. 5 is a cross-sectional view of a zero cold water check valve for a water heater according to an embodiment of the present invention;
fig. 6 is a cross-sectional view of a zero cold water check valve for a water heater according to an embodiment of the present invention.
Description of reference numerals:
one-way valve body 1
Cold water pipe section 11
Cold water inlet 111
Hot water pipe section 12
Hot water inlet 121
Raised post 14
One-way plug 2
Plug body 21
First elastic member 3
Second elastic member 5
Detailed Description
The present invention is further illustrated by the following examples, but is not limited thereby in the scope of the examples described below.
Please refer to fig. 1-6 for understanding. The embodiment of the invention provides a zero-cold-water one-way valve for a water heater, which comprises a valve body 1, a one-way plug 2, a first elastic part 3, a link mechanism 4 and a second elastic part 5.
The valve body 1 has a cold water pipe section 11, a hot water pipe section 12 and a mounting section 13 arranged in a protruding manner in the radial direction of the hot water pipe section 12, the cold water pipe section 11 has a cold water inlet 111 and a cold water outlet 112, the hot water pipe section 12 has a hot water inlet 121 and a hot water outlet 122, and the mounting section 13 has a stroke chamber 131. The cold water pipe segment 11 and the hot water pipe segment 12 may be formed as an integral body, or may be two separate members, and the two are sealed and fixed.
The two ends of the first elastic part 3 are respectively connected with the one-way plug 2 and one end of the valve body 1, the first elastic part 3 can be in a compression state or a reset state, and the interaction between one end of the valve body 1 close to the cold water pipe section 11 and the one-way plug 2 is not required to be kept all the time, so that the flow pipe resistance can be reduced in the using process. The one-way plug 2 is used for realizing that water flows from the hot water pipe section 12 to the cold water pipe section 11 and realizing that the cold water pipe section 11 is disconnected with the hot water pipe section 12, namely the one-way plug 2 is equivalent to a one-way valve core and can control the cold water pipe section 11 and the hot water pipe section 12 not to be communicated with each other and can also control the hot water to flow to the cold water but not to flow to the hot water.
The linkage 4 includes an input 41 and an output 42 located within a stroke chamber 131, the input 41 being movable within the stroke chamber 131. The inlet 41 has a pressure surface 43 facing the hot water pipe section 12, so that a large force can be generated with the water pressure in the hot water pipe section 12. The two ends of the second elastic element 5 are respectively connected with the input end 41 and the end of the mounting section 13, and the second elastic element 5 can be always kept in a compressed state. When the pressure applied by the pressure surface 43 from the inside of the hot water pipe section 12 exceeds the elastic force of the second elastic member 5, the input end 41 moves in the stroke cavity 131 and further compresses the second elastic member 5, and if the water pressure is high enough, the input end 41 moves to abut against the end surface of the stroke cavity 131 close to one end of the second elastic member 5 and stops moving; when the water pressure is reduced, the pressure applied to the pressure surface 43 is correspondingly reduced, the second elastic member 5 is extended, the input end 41 moves in the opposite direction, and when the water pressure is sufficiently low, the input end 41 moves to abut against the end surface or the side wall of the stroke cavity 131 far away from the end of the second elastic member 5 to stop moving, and at this time, the input end 41 is in the initial state.
The link mechanism 4 is provided as: when the water pressure of the hot water pipe section 12 is lower than the first pressure in the initial state, the output end 42 restricts the displacement freedom degree of the one-way plug 2 towards one side of the cold water pipe section 11, and at the moment, the cold water pipe section 11 is not communicated with the hot water pipe section 12; when the water pressure of the hot water pipe section 12 reaches the first pressure, the input end 41 compresses the second elastic element 5 under the action of the water pressure to drive the output end 42 to rotate, the output end 42 is in sliding connection with the one-way plug 2, and the one-way plug 2 moves towards one side of the cold water pipe section 11 to enable the cold water pipe section 11 to be communicated with the hot water pipe section 12. It should be noted that the first pressure is a preset pressure, and the first pressure can be set according to the model of the water heater. The first pressure can be set by combining the working condition of a circulating booster pump of the gas water heater.
Considering that the one-way valve is only needed to be used to construct a circulation loop when the gas water heater works circularly, and the water pressure of a hot water pipeline passing through the gas water heater is generally stable at a user end, the water pressure in the hot water pipe section 12 is sensed by arranging the connecting rod mechanism 4, which is equivalent to monitoring the work of a circulating booster pump of the gas water heater, so as to judge the start and stop of the one-way valve, thereby realizing the effect of preventing the water heater from being started by mistake. Specifically, in an initial state, as shown in fig. 4, the first elastic element 3 acts on one end of the one-way plug 2, and the link mechanism 4 limits the one-way plug 2 from the other end thereof, so that the one-way plug 2 disconnects the hot water pipe segment 12 from the cold water pipe segment 11; when the circulating booster pump starts to work, the water pressure of the hot water pipeline is increased, and when the water pressure reaches a first pressure, the water pushes the input end 41 and then drives the link mechanism 4 to move, so that the output end 42 and the one-way plug 2 are released along the axial constraint of the hot water pipe section 12, as shown in fig. 5; the water pressure of the hot water pipe section 12 pushes the one-way choke plug 2 to move towards one side of the cold water pipe section 11, the state is changed into the state shown in fig. 6, the hot water pipe section 12 is communicated with the cold water pipe section 11, and therefore the construction of a circulating pipeline is achieved.
When the circulating booster pump does not work, the state of the circulating booster pump is shown in fig. 4, the water pressure of the hot water pipeline is basically unchanged, the position of the one-way plug 2 limited by the connecting rod mechanism 4 is changed, so that the one-way valve fails, and the one-way plug 2 cannot be opened no matter how the pressure of the cold water pipeline changes, so that the effect of preventing the water heater from being started by mistake is achieved.
In addition, the first elastic part 3 only needs to achieve the reset function, the elastic coefficient is small, so that the circulating flow resistance is reduced, the starting pressure of the one-way valve is adjusted by adjusting the compression amount of the second elastic part 5, and therefore the optimal use effect is achieved by adjusting according to the specific conditions of a user home.
In summary, the invention has the advantages of high reliability of preventing false start, small flow resistance in the circulation process, adjustable starting pressure and strong applicability.
In the embodiment of the present invention, the input end 41 includes a disc 44, a pressure surface 43 is formed on the disc 44, and in an initial state, a side surface of the disc 44 abuts against an inner wall of the stroke chamber 131.
The disc 44 and the stroke chamber 131 have tapered sides toward the end of the hot water pipe section 12 to facilitate smooth contact or separation therebetween during operation, reduce cogging, and improve reliability and lifespan.
In an embodiment of the invention, the end of the disc 44 facing away from the hot water pipe section 12 has a tapered side. The end face of the disk 44 at the end facing away from the hot water pipe section 12 has a flat surface for abutting against the end face of the travel chamber 131, so that the travel chamber 131 can provide sufficient support for the disk 44 when the water pressure of the hot water pipe section 12 is high.
In the embodiment of the present invention, the disk 44 includes a first disk 441 and a second disk 442 that are symmetrically disposed, centers of the first disk 441 and the second disk 442 are fixedly connected by a short shaft, and a gap is provided between the first disk 441 and the second disk 442.
In the embodiment of the present invention, the end of the tray body 44 has the guiding portion 443, the guiding portion 443 is disposed in a protruding manner or in a recessed manner with respect to the end surface of the tray body 44, and the second elastic element 5 is inserted into or sleeved on the guiding portion 443, so as to ensure stability and reliability of the second elastic element 5 during the movement process.
In the embodiment of the present invention, the mounting section 13 includes a mounting tube 132, a mounting cap 133, and a mounting plug 134. The mounting tube 132 communicates with the interior of the hot water pipe section 12; the mounting tube 132 may be integrally formed with the hot water pipe section 12. The mounting end cap 133 is detachably connected to the mounting tube 132 to plug the mounting tube 132; the mounting end cap 133 has a mounting hole for receiving the second elastic member 5. The mounting plug 134 is fixedly coupled to the mounting cap 133 at the mounting hole and restrains the second elastic member 5 in the mounting hole. Preferably, the mounting plug 134 is threadably coupled to the mounting end cap 133.
In the embodiment of the invention, the disk body 44 is partially inserted into the mounting hole and is in sliding connection with the mounting hole, so that the disk body and the mounting hole form a mutual guiding relationship, and the stability and the reliability in the working process are improved. In addition, the above-described guide portion 443 can be understood as a portion of the disk 44 partially penetrating into the mounting hole.
In the embodiment of the present invention, the link mechanism 4 further includes a first link 45 and a second link 46, two ends of the first link 45 are respectively hinged to the input end 41 and one end of the second link 46, the other end of the second link 46 is fixedly connected to the output end 42, and the second link 46 and the output end 42 may be an integrally formed body. When the input end 41 moves in the stroke cavity 131, the first link 45 moves along with the input end and drives the output end 42 to output rotary motion.
In the embodiment of the present invention, the one-way plug 2 includes a sliding member, one of the sliding member and the output end 42 is a sliding rod 22, and the other one has a sliding slot 47 for the sliding rod 22 to penetrate through. The surface of the slide rod 22 is provided with a limit guide part 221 which is arranged in a protruding way, and the sliding groove 47 is provided with a guide groove 48 which extends along the axial direction of the slide rod 22; when the limiting guide part 221 abuts against the end face of the sliding groove 47, the output end 42 restricts the one-way plug 2 from moving towards the cold water pipe section 11, and when the sliding part and the output end 42 rotate relatively and the guiding limiting part corresponds to the guiding groove 48, the output end 42 is connected with the one-way plug 2 in a sliding mode.
In the embodiment of the invention, the unidirectional plug 2 comprises a barrel-shaped plug main body 21 and a sliding rod 22, wherein one end of the sliding rod 22 is fixed at the end part of the plug main body 21; the stopper guide 221 has a plate-like structure extending in the axial direction of the slide bar 22.
In the embodiment of the invention, the side wall of the plug main body 21 is provided with the circulation ports 211, and when the cold water pipe segment 11 is communicated with the hot water pipe segment 12, the two circulation ports 211 are correspondingly communicated with the cold water inlet 111 and the cold water outlet 112 one by one, so that water can be conveniently circulated.
In the embodiment of the invention, the zero-cold-water one-way valve for the water heater further comprises a sleeve 6, two ends of the sleeve 6 are respectively abutted against the end part of the valve body 1 and the inner wall of the valve body 1, and the side wall of the sleeve 6 is provided with a plurality of water through holes 61 arranged at intervals so as to facilitate the communication between the cold water outlet 112 and the cold water inlet; the side wall of the plug main body 21 is connected with the inner wall of the sleeve 6 in a sliding manner, and the first elastic piece 3 is arranged in the sleeve 6.
In the embodiment of the invention, one end of the one-way choke plug 2 facing the cold water pipe section 11 is provided with the guide post 23 which is convexly arranged, the sleeve 6 is internally provided with the guide cylinder 62, the guide post 23 is in sliding connection with the guide cylinder 62, the first elastic part 3 is internally arranged in the guide cylinder 62 and is abutted against the guide post 23, and the guide cylinder 62 ensures the stability of the first elastic part 3 and the reliability of the first elastic part 3 and the guide post 23.
In the embodiment of the present invention, the side surface of the guiding column 23 is provided with a protruding portion 231 protruding outward in the radial direction, and the guiding cylinder 62 is provided with a guiding groove 621 for the protruding portion 231 to slide, so as to improve the movement stability of the unidirectional plug 2; the guide column 23 is a hollow body; the end of the valve body 1 is provided with a protruding column 14 extending into the guide cylinder 62, and the first elastic member 3 is sleeved on the protruding column 14. In addition, the valve body 1 has a sealing cover provided at one end of the cold water pipe segment 11, a sealing end cover is detachably and sealingly connected with the cold water pipe segment 11, and the protruding column 14 is provided on the sealing end cover.
In the embodiment of the invention, the cold water inlet 111 and the cold water outlet 112 are positioned at two opposite sides of the valve body 1; the hot water inlet 121 is arranged right opposite to the one-way plug 2, so that the hot water pressure can directly act on the one-way plug 2, and the sensitivity of the one-way valve is improved.
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 (14)
1. A zero cold water check valve for a water heater, comprising:
the valve body is provided with a cold water pipe section, a hot water pipe section and an installation section which is arranged along the radial direction of the hot water pipe section in a protruding mode, the cold water pipe section is provided with a cold water inlet and a cold water outlet, the hot water pipe section is provided with a hot water inlet and a hot water outlet, and the installation section is provided with a stroke cavity;
the valve comprises a one-way plug and a first elastic piece, wherein two ends of the first elastic piece are respectively connected with the one-way plug and one end of the valve body, and the one-way plug is used for enabling water to flow from the hot water pipe section to the cold water pipe section and disconnecting the cold water pipe section and the hot water pipe section;
the connecting rod mechanism comprises an input end and an output end which are positioned in the stroke cavity, the input end is provided with a pressure surface facing the hot water pipe section, and two ends of the second elastic piece are respectively connected with the input end and the end part of the installation section;
the linkage is configured to: in the initial state and when the water pressure of the hot water pipe section is lower than the first pressure, the output end restrains the displacement freedom degree of the one-way plug towards one side of the cold water pipe section; when the water pressure of the hot water pipe section reaches a first pressure, the input end compresses the second elastic piece under the action of the water pressure to drive the output end to rotate, the output end is connected with the one-way plug in a sliding mode, and the one-way plug moves towards one side of the cold water pipe section to enable the cold water pipe section to be communicated with the hot water pipe section.
2. The zero chill check valve for a water heater of claim 1 wherein said input comprises a disk having said pressure surface, wherein initially a side of said disk abuts an inner wall of said travel chamber.
3. The cold water zero check valve for a water heater as claimed in claim 2,
the end of the disc body and the stroke cavity facing the hot water pipe section are provided with tapered side surfaces;
and/or one end of the disc body facing away from the hot water pipe section is provided with a conical side surface;
and/or the end surface of one end of the disc body, which is far away from the hot water pipe section, is provided with a plane for being attached to the end surface of the stroke cavity;
and/or the disc body comprises a first disc part and a second disc part which are symmetrically arranged, the centers of the first disc part and the second disc part are fixedly connected through a short shaft, and a gap is formed between the first disc part and the second disc part.
4. The non-cold water check valve for the water heater as claimed in claim 2, wherein the end of the tray body has a guide portion which is protruded or recessed with respect to the end surface of the tray body, and the second elastic member is inserted or sleeved with the guide portion.
5. A zero cold water check valve for a water heater as recited in claim 2, wherein said mounting section comprises:
the installation pipe body is communicated with the inside of the hot water pipe section;
the mounting end cover is detachably connected with the mounting pipe body and is provided with a mounting hole for accommodating the second elastic piece; and
and the mounting plug is fixedly connected with the mounting end cover and restrains the second elastic piece in the mounting hole.
6. The zero-cold-water check valve for a water heater as claimed in claim 5, wherein said disk body is partially inserted into said mounting hole and slidably coupled to said mounting hole.
7. The non-cold water check valve for a water heater as claimed in claim 1, wherein said link mechanism further comprises a first link and a second link, both ends of said first link are hinged to said input end and one end of said second link, respectively, and the other end of said second link is fixedly connected to said output end.
8. The cold water zero check valve for a water heater as claimed in claim 1, wherein said check plug comprises a sliding member, one of said sliding member and said output end is a sliding rod, and the other one is provided with a sliding groove for said sliding rod to pass through;
the surface of the sliding rod is provided with a limit guide part which is arranged in a protruding mode, and the sliding groove is provided with a guide groove which extends along the axial direction of the sliding rod; when the limiting guide portion is abutted to the end face of the sliding groove, the output end restrains the one-way plug to move towards the cold water pipe section side, and when the sliding piece and the output end rotate relatively and the guiding limiting portion corresponds to the guiding groove, the output end is connected with the one-way plug in a sliding mode.
9. The zero-cold-water one-way valve for a water heater as claimed in claim 8, wherein the one-way choke plug comprises a tubular choke plug body and the slide rod, one end of the slide rod is fixed to the end of the choke plug body; the limiting guide part is of a plate-shaped structure extending along the axial direction of the sliding rod.
10. The cold water non-return valve for a water heater as claimed in claim 9, wherein said plug body has a plurality of communication holes on a sidewall thereof, and when said cold water pipe section and said hot water pipe section are communicated, two of said communication holes are communicated with said cold water inlet and said cold water outlet in a one-to-one correspondence.
11. The zero-cold-water check valve for the water heater according to claim 9, further comprising a sleeve, wherein two ends of the sleeve are respectively abutted against the end portion of the valve body and the inner wall of the valve body, the side wall of the sleeve is provided with a plurality of water through holes arranged at intervals, the side wall of the plug body is slidably connected with the inner wall of the sleeve, and the first elastic member is arranged in the sleeve.
12. The cold water zero check valve for a water heater as claimed in claim 11, wherein the one-way plug has a protruding guide post at an end facing the cold water pipe section, the sleeve has a guide cylinder therein, the guide post is slidably connected with the guide cylinder, and the first elastic member is disposed in the guide cylinder and abuts against the guide post.
13. The zero-cold-water check valve for a water heater as recited in claim 12,
the side surface of the guide post is provided with a bulge part which protrudes outwards along the radial direction, and the guide cylinder is provided with a guide groove for the bulge part to slide;
and/or the guide column is a hollow body;
and/or the end part of the valve body is provided with a protruding column which extends into the guide cylinder, and the first elastic piece is sleeved on the protruding column.
14. Zero cold water check valve for a water heater as claimed in any one of claims 1 to 13,
the cold water inlet and the cold water outlet are positioned on two opposite sides of the valve body;
and/or the hot water inlet is arranged right opposite to the one-way plug.
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| CN202110028124.0A CN112855987B (en) | 2021-01-07 | 2021-01-07 | Zero cold water one-way valve for water heater |
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| CN202110028124.0A CN112855987B (en) | 2021-01-07 | 2021-01-07 | Zero cold water one-way valve for water heater |
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| CN112855987B CN112855987B (en) | 2022-03-22 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114508613A (en) * | 2022-01-10 | 2022-05-17 | 青岛澳柯玛生活电器有限公司 | Zero cold water one-way valve of gas water heater |
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|---|---|
| CN112855987B (en) | 2022-03-22 |
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