CN113847737B - Anti-freezing water heater - Google Patents
Anti-freezing water heater Download PDFInfo
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- CN113847737B CN113847737B CN202010599792.4A CN202010599792A CN113847737B CN 113847737 B CN113847737 B CN 113847737B CN 202010599792 A CN202010599792 A CN 202010599792A CN 113847737 B CN113847737 B CN 113847737B
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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
- F24H15/00—Control of fluid heaters
- F24H15/10—Control of fluid heaters characterised by the purpose of the control
- F24H15/136—Defrosting or de-icing; Preventing freezing
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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
- F24H1/00—Water heaters, e.g. boilers, continuous-flow heaters or water-storage heaters
- F24H1/10—Continuous-flow heaters, i.e. heaters in which heat is generated only while the water is flowing, e.g. with direct contact of the water with the heating medium
- F24H1/12—Continuous-flow heaters, i.e. heaters in which heat is generated only while the water is flowing, e.g. with direct contact of the water with the heating medium in which the water is kept separate from the heating medium
- F24H1/14—Continuous-flow heaters, i.e. heaters in which heat is generated only while the water is flowing, e.g. with direct contact of the water with the heating medium in which the water is kept separate from the heating medium by tubes, e.g. bent in serpentine form
- F24H1/145—Continuous-flow heaters, i.e. heaters in which heat is generated only while the water is flowing, e.g. with direct contact of the water with the heating medium in which the water is kept separate from the heating medium by tubes, e.g. bent in serpentine form using fluid fuel
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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
- F24H9/14—Arrangements for connecting different sections, e.g. in water heaters
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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
- F24H9/2035—Arrangement or mounting of control or safety devices for water heaters using fluid fuel
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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)
- Details Of Valves (AREA)
Abstract
An anti-freezing water heater comprises a water heater body; the water inlet pipe is in fluid communication with the water inlet end of the water heater body; the water outlet pipe is in fluid communication with the water outlet end of the water heater body; an anti-freeze valve; a tap water pipe; the first valve body is internally provided with a first water flow channel which is longitudinally communicated and a valve chamber which is crossed with the first water flow channel, the section of the first water flow channel positioned above the valve chamber is an outlet channel, the section of the first water flow channel positioned below the valve chamber is an inlet channel, the outlet channel is in fluid communication with an inlet pipe, and the inlet channel is in fluid communication with a tap water pipe; a first valve body provided in the valve chamber and movable relative to the valve chamber; the driving piece is connected with the first valve core, can expand when heated and pushes the first valve core to a position far away from the first water flow channel, and can contract when cooled to enable the first valve core to block the water inlet channel and the water outlet channel without water inlet into the water inlet pipe.
Description
Technical Field
The invention belongs to the technical field of water heaters, and particularly relates to an anti-freezing water heater.
Background
After the gas water heater is installed, the internal water channel pipeline is generally filled with tap water, when the ambient air temperature is too low, water in the pipeline is frozen, the volume of the water is increased by about 10% on the original volume in the process of forming ice by the water, the expansion of the volume causes the pressure inside the pipeline to rise sharply, and finally the pressure is released at one or more weak points in the pipeline, so that the water channel of the gas water heater is broken. After the temperature rises, ice in the pipeline of the water heater melts into water, tap water can continuously leak from the frost crack places, and finally a large amount of water is accumulated on the ground of a user, so that poor use experience is brought to the user.
Although anti-freezing gas water heaters are available on the market, the gas water heaters are all prevented from freezing by heating with an electric heating rod at low temperature, and the gas water heaters are also frozen if the gas water heaters are not plugged. To solve the problem, chinese utility model patent No. CN201120285735.5 (publication No. CN 202140624U) discloses a "automatic protection valve for frozen and exploded pipeline in water heater", which adopts a purely mechanical protection valve structure, including a valve body, the valve body is divided into a piston cavity and a one-way valve cavity by an interlayer with a through small hole, a piston is arranged in the piston cavity to divide the cavity into a piston front cavity and a piston rear cavity, a water inlet is arranged at a position opposite to the side surface of the piston on the piston front cavity, a water outlet is arranged at a position opposite to the front end surface of the piston, and a spring is arranged between the piston rear end surface in the piston rear cavity and the interlayer; the check valve cavity is divided into an upper valve cavity and a lower valve cavity, the upper valve cavity and the lower valve cavity are respectively provided with a hot water inlet and a hot water outlet, the check valve core is arranged between the upper valve cavity and the lower valve cavity, and a pressure spring with the lower end positioned is sleeved on a check valve rod; the through small holes of the interlayer are communicated with the lower valve cavity, and the protective valve can effectively prevent tap water from gushing out greatly after the pipeline in the water heater is frozen and burst.
The protection valve only can play a role after the pipeline is frozen and cracked in the water heater, the pipeline is already expanded and cracked at the moment, although the water outlet of the front cavity of the piston is blocked at the moment, tap water can not enter the pipeline of the water heater again, but after the temperature is warmed up, water formed by melting ice in the pipeline can still leak from the frozen and cracked position, and the problems that the floor is damaged by bubbles and the like are caused.
Disclosure of Invention
The first technical problem to be solved by the invention is to provide an anti-freezing water heater which can block tap water from entering before a pipeline of the water heater is frozen and cracked, aiming at the current situation of the prior art.
A second technical problem to be solved by the present invention is to provide an anti-freezing water heater capable of blocking the inflow of tap water and discharging a water portion in a pipe before the pipe of the water heater is frozen and broken, in view of the current state of the prior art.
The third technical problem to be solved by the invention is to provide an anti-freezing water heater which can block the water from entering the water heater before the pipeline of the water heater is frozen and cracked and can discharge all the water in the pipeline.
The technical scheme adopted by the invention for solving the first technical problem is as follows: an anti-freezing water heater comprises
The water heater body is provided with a water inlet end and a water outlet end;
the water inlet pipe is in fluid communication with the water inlet end of the water heater body;
the water outlet pipe is in fluid communication with the water outlet end of the water heater body;
the anti-freezing valve is arranged between the water inlet pipe and the water outlet pipe;
the tap water pipe is in fluid communication with the water inlet pipe through the antifreezing valve;
characterized in that the anti-freezing valve comprises
The first valve body is internally provided with a first water flow channel which is longitudinally communicated and a valve chamber which is arranged in a crossed manner with the first water flow channel, the section of the first water flow channel which is positioned above the valve chamber is a water outlet channel, the section of the first water flow channel which is positioned below the valve chamber is a water inlet channel, the water outlet channel is communicated with a water inlet pipe in a fluid manner, and the water inlet channel is communicated with a tap water pipe in a fluid manner;
a first spool disposed in the valve chamber and movable relative to the valve chamber;
the driving part is arranged on the outer side of the first valve body and connected with the first valve core through the first connecting rod, the driving part can expand when heated to push the first valve core to a position far away from the first water flow channel, and the driving part can contract when cooled to push the first valve core to the intersection of the valve chamber and the first water flow channel, so that the first valve core blocks the water inlet channel and the water outlet channel.
The technical scheme adopted by the invention for solving the second technical problem is as follows: the first valve core is provided with a communicating port, the communicating port is communicated with the water outlet channel and the valve chamber under the condition that the first valve core is positioned at the intersection of the valve chamber and the first water flow channel, and the valve chamber is in fluid communication with a first water outlet pipe.
The technical scheme adopted by the invention for solving the third technical problem is as follows: the frost valve also comprises
The second valve body is internally provided with a valve cavity and a second water flow channel, one end of the second water flow channel is in fluid communication with the water discharge pipe, and the other end of the second water flow channel is crossed with the valve cavity and penetrates through the side wall of the second valve body;
and the second valve core is arranged in the valve cavity and can move relative to the valve cavity, the second valve core can move to the intersection of the second water flow passage and the valve cavity to block the second water flow passage, and under the condition that the first valve core is positioned at the intersection of the first water flow passage and the valve cavity, the second valve core is far away from the second water flow passage under the action that the driving part continuously contracts when meeting cold.
Under the normal use state, first valve core keeps away from first rivers passageway, and the second rivers passageway is blocked to the second valve core to guarantee that the water in the water pipe gets into the inlet tube smoothly, then flow out from the drain pipe after the heating, for guaranteeing that the second valve core is in the position of blocking the second rivers passageway, be equipped with the elastic component that acts on the second valve core in the valve pocket, the second valve core has the trend of blocking the second rivers passageway all the time under this elastic component's effect.
In order to collect the water in the first water outlet pipe and the second water outlet pipe and avoid wetting the floor, the other end of the second water flow channel is connected with the second water outlet pipe, the second end of the first water outlet pipe is communicated with a box body in a fluid mode, the second water outlet pipe is also communicated with the box body in a fluid mode, and a water absorption part is arranged in the box body.
Preferably, the water absorbing component is absorbent cotton. Because the total water content in the machine is generally not more than 500ml, the absorbent cotton can completely absorb the water discharged by the first water outlet pipe and the second water outlet pipe, and the floor is prevented from being wetted.
In order not to treat water in the box body, the box body is provided with air holes. Therefore, the water in the box body can be evaporated, and the water is not poured by people.
In order to enable the driving part to apply force to the first connecting rod and the second connecting rod well, a first plate connected with the driving part is arranged on the first connecting rod, a second plate connected with the driving part is arranged on the second connecting rod, and therefore the first connecting rod and the second connecting rod have large contact areas with the driving part.
In order to improve the working reliability of the driving part, the driving part is arranged in a box body, the box body is in fluid communication with a tap water pipe through a connecting pipe, and an exhaust valve for exhausting gas in the box body is arranged on the side wall of the box body. Like this the driving piece can direct perception water temperature of the water that the water pipe flowed in carry out expend with heat and contract with cold, for the mode of driving piece perception temperature, the operational reliability of driving piece is higher.
In order to close the anti-freezing valve when a user does not need to use the automatic anti-freezing function of the machine, a button is arranged on the box body and can move relative to the box body, the first valve core is always in a state of being far away from the first water flow channel under the condition that the button extends into the driving piece to enable the driving piece to be in an expanded state, and the second valve core is always in a state of blocking the second water flow channel, so that the water inlet pipe and the water supply pipe are always in fluid communication, water in the water discharge pipe can be smoothly discharged, and in order to avoid interference between the driving piece and the inner wall of the valve chamber due to thermal expansion, a space for the first valve core to move when the driving piece is continuously expanded is arranged in the valve chamber.
Compared with the prior art, the invention has the advantages that: 1. the water supply device is provided with the driving piece and the first valve core, so that the first valve core moves to a position for blocking the first water flow channel under the action of the driving piece before the temperature reaches the temperature capable of enabling a pipeline to be frost-cracked, namely, the water inlet of a tap water pipe is blocked, so that even if the residual water in the subsequent pipeline is frozen to freeze the pipeline, only the original residual water in the pipeline leaks out after the temperature is warmed up, otherwise, tap water continuously enters the pipeline after the pipeline is frost-cracked, and large-area water leakage can be caused; 2. the invention is provided with the first water outlet pipe which is in fluid communication with the valve chamber, under the condition that the first valve core blocks the first water flow channel, the communication port on the first valve core is communicated with the water outlet channel and the valve chamber, residual water in the water inlet pipe flows into the valve chamber from the water outlet channel and then flows out from the first water outlet pipe, although the water discharge is smaller because the water inlet pipe is not communicated with the atmosphere, the water inlet pipe can be prevented from being frozen and cracked to a certain extent; 3. the water heater is also provided with a second valve body and a second valve core, the second valve core is positioned at a position for blocking a second water flow channel in the normal use state of the water heater, when the temperature is reduced, the first valve core blocks the first water flow channel, the temperature is continuously reduced after water in the tap water pipe cannot enter the water inlet pipe, the second valve core can be far away from the second water flow channel under the action of the driving piece to enable the second water flow channel to be in a communicated state, at the moment, the water is communicated with the atmosphere, the water in the water inlet pipe and the water outlet pipe can be completely discharged, and the pipeline is further prevented from being frozen and cracked by residual water in the water.
Drawings
FIG. 1 is a schematic structural diagram of an embodiment of the present invention;
FIG. 2 is an enlarged view taken at A of FIG. 1 (initial state, driver in expanded state, button not pressed);
FIG. 3 is an enlarged view taken at A of FIG. 1 (temperature drop, driver cold shrinkage, button not pressed);
FIG. 4 is an enlarged view taken at A of FIG. 1 (temperature continues to drop, driver continues to contract when cooled, and button is not pressed);
FIG. 5 is an enlarged view taken at A of FIG. 1 (with the temperature further reduced, the driver further contracted by cooling, and the button not depressed);
fig. 6 is an enlarged view of fig. 1 at a (button press-in driver).
Detailed Description
The invention is described in further detail below with reference to the accompanying examples.
As shown in fig. 1 to 6, the antifreeze water heater of the preferred embodiment takes a gas water heater as an example, and includes a water heater body 1, a water inlet pipe 2, a water outlet pipe 3, an antifreeze valve 4, a tap water pipe 5, a tank 8, and the like, where the water heater body 1 has a water inlet end, a water outlet end, and a heat exchange component located between the water inlet end and the water outlet end, which are the prior art and will not be described herein again.
The water inlet pipe 2 is in fluid communication with the water inlet end of the water heater body 1, the water outlet pipe 3 is in fluid communication with the water outlet end of the water heater body 1, and the anti-freezing valve 4 is arranged between the water inlet pipe 2 and the water outlet pipe 3.
The antifreeze valve 4 includes a first valve body 41, a first valve spool 42, a driving member 43, a second valve body 44, and a second valve spool 45, the first valve body 41 is located on the side of the water inlet pipe 2, the second valve body 44 is located on the side of the water outlet pipe 3, and the driving member 43 is located between the first valve body 41 and the second valve body 44.
A first water flow channel 412 longitudinally penetrating and a valve chamber 411 intersecting with the first water flow channel 412 are arranged in the first valve body 41, referring to fig. 2, the first water flow channel 412 is longitudinally arranged, the valve chamber 411 is transversely arranged, a section of the first water flow channel 412 above the valve chamber 411 is a water outlet channel 4121, a section of the first water flow channel 412 below the valve chamber is a water inlet channel 4122, wherein the water outlet channel 4121 is in fluid communication with the water inlet pipe 2, and the water inlet channel 4122 is in fluid communication with the water inlet pipe 5, that is, the water inlet pipe 5 is in fluid communication with the water inlet pipe 2 through the first valve body 41.
The first valve core 42 is disposed in the valve chamber 411 and can move relative to the valve chamber 411, the first valve core 42 is connected to the driving member 43 through a first connecting rod 421, and one end of the first connecting rod 421 close to the driving member 43 is provided with a first plate member 423 connected to the driving member 43.
Under normal conditions, the first valve core 42 is pushed to a position far away from the first water flow channel 412 by the thermal expansion of the driving member 43, the first water flow channel 412 is used for communicating the tap water pipe 5 with the water inlet pipe 2, and the water can be normally fed into the water heater body 1; when the temperature is lowered, the driving member 43 contracts when it is cold and pushes the first valve core 42 to the intersection of the valve chamber 411 and the first water flow passage 412, so that the first valve core 42 blocks the water inlet passage 4122 and the water outlet passage 4121, and at this time, the water in the tap water pipe 5 cannot enter the water inlet pipe 2. Such as summer, where the temperature is high and the driver 43 expands with heat, the first valve spool 42 is located away from the first water flow passage 412; in winter, the temperature is low, the driving member 43 contracts when cooled, and the first valve core 42 is pushed to the intersection of the valve chamber 411 and the first water flow passage 412 by the driving member 43.
The first valve core 42 is provided with a communication port 422, the communication port 422 is communicated with the water outlet channel 4121 and the valve chamber 411 when the first valve core 42 is positioned at the intersection of the valve chamber 411 and the first water flow channel 412, and one first water outlet pipe 61 is in fluid communication with the valve chamber 411. In this embodiment, in a state where the first valve core 42 is located at the intersection of the valve chamber 411 and the first water flow passage 412, the first valve core 42 is located at the leftmost end of the valve chamber 411, and an area of the valve chamber 411 located at the right side of the first valve core 42 is in fluid communication with the first water outlet pipe 61 and the communication port 422.
The second valve body 44 has a valve chamber 441 therein, and a second water flow passage 442 having one end in fluid communication with the drain pipe 3 and the other end crossing the valve chamber 441 and penetrating a sidewall of the second valve body 44. In this embodiment, referring to fig. 2, the second water flow channel 442 is L-shaped, the transverse section 4421 is in fluid communication with the water discharge pipe 3, the vertical section 4422 is arranged to intersect with the valve cavity 441, the valve cavity 441 is transversely arranged, one end of the vertical section 4422 is in fluid communication with the transverse section 4421, and the other end of the vertical section 4422 penetrates through the side wall of the second valve body 44 and is connected with the second water outlet pipe 62, in this embodiment, the second water outlet pipe 62 is integrally formed with the following box body 7.
The second valve spool 45 is disposed in the valve cavity 441 and can move relative to the valve cavity 441, the second valve spool 45 is connected to the driving member 43 through a second connecting rod 451, and a second plate 452 connected to the driving member 43 is disposed at one end of the second connecting rod 451 close to the driving member 43. The valve cavity 441 is provided with an elastic member 46 acting on the second valve core 45, the second valve core 45 always tends to block the second water flow channel 442 under the action of the elastic member 46, in this embodiment, the elastic member 46 is a spring, and is sleeved on the second connecting rod 451, and two ends of the elastic member respectively abut against the inner walls of the second valve core 45 and the valve cavity 441.
In this embodiment, when the first valve core 42 is located at the intersection of the first water flow passage 412 and the valve chamber 411, the first valve core 42 and the side wall of the valve chamber 411 are abutted and can not move continuously towards the driving member 43; when the second valve core 45 is located at the intersection of the second water flow channel 442 and the valve cavity 441, the second valve core 45 and the side wall of the valve cavity 441 are against each other and cannot move further away from the driving member 43.
Under normal conditions, the second spool 45 is at the intersection of the second water flow passage 442 and the valve chamber 441 to block the second water flow passage 442. In the state where the first spool 42 is located at the intersection of the first water passage 412 and the valve chamber 411, the driving member 43 is contracted further when it is cooled to drive the second spool 45 away from the second water passage 442, and the water in the drain pipe 3 can flow out from the second water passage 442.
The driving member 43 may include a casing and a material capable of expanding with heat and contracting with cold, such as mercury, and the casing may be made of an elastic material so as to deform along with the expansion with heat and contraction with cold of mercury, and further apply force on the first link 421 and the second link 451.
The driving member 43 is disposed in the box 8, the box 8 is in fluid communication with the tap water pipe 5 through a connection pipe 51, a through hole may be formed in a side wall of the box 8, an exhaust valve 81 capable of shielding or opening the through hole is disposed at the through hole, the exhaust valve 81 may be a floating ball type structure, and when the box 8 is filled with tap water, air in the box 8 is exhausted from the exhaust valve 81. Therefore, the driving member 43 can directly sense the water temperature of the water flowing in from the water pipe 5 to expand with heat and contract with cold, and the working reliability of the driving member 43 is higher compared with a mode that the driving member 43 is placed in the air to sense the air temperature.
The housing 8 is provided with a button 9, the button 9 being movable relative to the housing 8, and the button 9 being extendable into the drive member 43 to bring the drive member 43 into an expanded state. The switch-off can be performed by means of the button 9 when the user does not need to use the automatic anti-freeze function of the machine. The principle is as follows: when the automatic freeze prevention function is used, the button 9 is in an unpressed state, and the freeze valve 4 is normally operated, as shown in fig. 2. When the push button 9 is pressed, the push button 9 is pressed into the driving member 43 to forcibly bring the driving member 43 into a state similar to the expansion state, as shown in fig. 6, and it is required to ensure that the expansion amount of the driving member 43 brings the first spool 42 into a state away from the first water flow passage 412, and the second water flow passage 442 into a state blocked by the second spool 45, and there is a space in the valve chamber 411 for the first spool 42 to move when the driving member 43 continues to expand, i.e., there is a space reserved to the right side of the first spool 42 enough for the first spool 42 to move when the driving member 43 continues to expand.
The second end of the first water outlet pipe 61 is in fluid communication with a box body 7, the second end of the second water outlet pipe 62 is also in fluid communication with the box body 7, and a water absorbing part 71 is arranged in the box body 7, wherein in the embodiment, the water absorbing part 71 is water absorbing cotton. Since the total water content in the machine is generally not more than 500ml, the absorbent cotton can completely absorb the water discharged from the first water outlet pipe 61 and the second water outlet pipe 62, and the floor is prevented from being wetted. The box body 7 is provided with an air hole 72. So that the water in the cartridge 7 can be evaporated without manual operation. Preferably, the absorbent cotton covers the air hole 72 to prevent water in the box body 7 from flowing out of the air hole 72 without passing through the absorbent cotton.
The operation of the antifreeze valve 4 of the present embodiment is as follows:
as shown in fig. 2, after the tap water pipe 5 is supplied with water, the tap water flows into the tank 8 through the connection pipe 51, the air inside the tank 8 is exhausted by the exhaust valve 81, and the current water temperature is sensed by the driving member 43. At normal temperature, the second valve core 45 is at the leftmost end under the action of the elastic member 46 (the second valve core 45 is at the intersection of the second water flow passage 442 and the valve cavity 441 to block the second water flow passage 442), and the water in the drain pipe 3 flows out normally; the driving member 43 positions the first valve core 42 at the right side of the first water flow passage 412 (at this time, the first valve core 42 is far away from the first water flow passage 412, and the tap water pipe 5 and the water inlet pipe 2 are in a communication state), at this time, the water inlet and the water outlet of the water heater are smooth, and the water heater can operate normally.
When the temperature drops, for example, to about 5 ℃, the first valve spool 42 starts to move to the left under the contraction action of the driver 43, as shown in fig. 3, and the first valve spool 42 starts to slowly block the communication between the water inlet passage 4122 and the water outlet passage 4121.
The temperature continues to drop, the first valve core 42 moves to the leftmost end (at this time, the first valve core 42 is located at the intersection of the valve chamber 411 of the first water flow channel 412), the first valve core 42 completely blocks the water inlet channel 4122 and the water outlet channel 4121, as shown in fig. 4, and at this time, the communication port 422 on the first valve core 42 fluidly connects the water outlet channel 4121 and the valve chamber 411, the water in the water inlet pipe 2 flows through the first water outlet pipe 61 under the action of its own gravity, and finally enters the tank 8 to be absorbed by the water absorbing part 71, so the water outlet is not communicated with the atmosphere, the water discharge amount of the water inlet pipe 2 is relatively small at this time, but the pipeline can also be prevented from being frozen and cracked to a certain extent.
As the temperature continues to drop, the actuator 43 continues to contract, and since the first spool 42 has moved to the far left, the second spool 45 will move to the right away from the second flow path 442, eventually placing the drain pipe 3 in fluid communication with the second outlet pipe 62, as shown in fig. 5, where both the water inlet and the water outlet of the water heater are in communication with the tank 8, corresponding to the atmosphere, so that most of the water in the water heater will drain by gravity to the suction member 71, and the water heater will not freeze even if the temperature at the rear drops to the freezing point.
When the temperature of the material is slowly restored, on the contrary, the second valve core 45 will block the second water flow channel 442 under the action of the driving member 43 and the elastic member 46, and then the first valve core 42 is far away from the first water flow channel 412, and then the water heater can be used normally again, and the state of fig. 2 is restored.
The term "fluid communication" as used herein refers to a spatial relationship between two components or portions (hereinafter collectively referred to as a first portion and a second portion, respectively), i.e., a fluid (gas, liquid or a mixture of both) can flow from the first portion along a flow path or/and be transported to the second portion, and may be a direct communication between the first portion and the second portion, or an indirect communication between the first portion and the second portion via at least one third member, such as a fluid channel, e.g., a pipe, a channel, a conduit, a flow guide, a hole, a groove, or a chamber that allows a fluid to flow therethrough, or a combination thereof.
Claims (8)
1. An anti-freezing water heater comprises
The water heater comprises a water heater body (1) with a water inlet end and a water outlet end;
the water inlet pipe (2) is in fluid communication with the water inlet end of the water heater body (1);
the water discharge pipe (3) is in fluid communication with the water outlet end of the water heater body (1);
the anti-freezing valve (4) is arranged between the water inlet pipe (2) and the water outlet pipe (3);
the tap water pipe (5) is in fluid communication with the water inlet pipe (2) through the antifreezing valve (4);
characterized in that said anti-freeze valve (4) comprises
The first valve body (41) is internally provided with a first water flow channel (412) which is longitudinally communicated and a valve chamber (411) which is crossed with the first water flow channel (412), the section of the first water flow channel (412) which is positioned above the valve chamber (411) is an outlet channel (4121), the section of the first water flow channel (412) which is positioned below the valve chamber (411) is an inlet channel (4122), the outlet channel (4121) is communicated with the inlet pipe (2) in a fluid manner, and the inlet channel (4122) is communicated with the tap water pipe (5) in a fluid manner;
a first valve element (42) which is provided in the valve chamber (411) and can move relative to the valve chamber (411);
the driving piece (43) is arranged on the outer side of the first valve body (41) and is connected with the first valve core (42) through a first connecting rod (421), the driving piece (43) can expand by heating to push the first valve core (42) to a position far away from the first water flow channel (412), and the driving piece (43) can contract by cooling to push the first valve core (42) to the intersection of the valve chamber (411) and the first water flow channel (412) so that the first valve core (42) blocks the water inlet channel (4122) and the water outlet channel (4121); the first valve core (42) is provided with a communication port (422), the communication port (422) is communicated with the water outlet channel (4121) and the valve chamber (411) under the condition that the first valve core (42) is positioned at the intersection of the valve chamber (411) and the first water flow channel (412), and the valve chamber (411) is in fluid communication with a first water outlet pipe (61); the anti-freezing valve (4) also comprises
A second valve body (44) having a valve chamber (441) and a second water flow passage (442) provided therein, the second water flow passage (442) having one end in fluid communication with the drain pipe (3) and the other end crossing the valve chamber (441) and penetrating a sidewall of the second valve body (44);
the second valve core (45) is arranged in the valve cavity (441) and can move relative to the valve cavity (441), the second valve core (45) is connected with the driving piece (43) through a second connecting rod (451), and the second valve core (45) can move to the intersection of the second water flow channel (442) and the valve cavity (441) to block the second water flow channel (442).
2. The antifreeze water heater of claim 1, wherein: an elastic piece (46) acting on the second valve core (45) is arranged in the valve cavity (441), and the second valve core (45) always has the tendency of blocking the second water flow channel (442) under the action of the elastic piece (46).
3. The antifreeze water heater of claim 2, wherein: the other end of the second water flow channel (442) is connected with a second water outlet pipe (62), the second end of the first water outlet pipe (61) is in fluid communication with a box body (7), the second water outlet pipe (62) is also in fluid communication with the box body (7), and a water absorption part (71) is arranged in the box body (7).
4. The antifreeze water heater of claim 3, wherein: the water absorption part (71) is water absorption cotton.
5. The antifreeze water heater of claim 3, wherein: the box body (7) is provided with an air hole (72).
6. The antifreeze water heater of claim 1, wherein: be equipped with first plate (423) that link to each other with driving piece (43) on first connecting rod (421), be equipped with second plate (452) that link to each other with driving piece (43) on second connecting rod (451).
7. The antifreeze water heater of any one of claims 1 to 6, wherein: the driving piece (43) is arranged in a box body (8), the box body (8) is in fluid communication with the tap water pipe (5) through a connecting pipe (51), and an exhaust valve (81) for exhausting gas in the box body (8) is arranged on the side wall of the box body (8).
8. The antifreeze water heater of claim 7, wherein: the box body (8) is provided with a button (9), the button (9) can move relative to the box body (8), when the button (9) extends into the driving piece (43) to enable the driving piece (43) to be in an expansion state, the first valve core (42) is in a state of being far away from the first water flow channel (412), the second valve core (45) is in a state of blocking the second water flow channel (442), and a space for the first valve core (42) to move when the driving piece (43) continues to expand is formed in the valve chamber (411).
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| CN202010599792.4A CN113847737B (en) | 2020-06-28 | 2020-06-28 | Anti-freezing water heater |
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| CN202010599792.4A CN113847737B (en) | 2020-06-28 | 2020-06-28 | Anti-freezing water heater |
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| CN113847737B true CN113847737B (en) | 2022-11-08 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2023141349A1 (en) * | 2022-01-24 | 2023-07-27 | Rheem Manufacturing Company | Freeze protection valves, systems, and methods |
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| JPH09229477A (en) * | 1996-02-26 | 1997-09-05 | Rinnai Corp | Freeze protection method and apparatus for hot water supply apparatus and low temperature actuated drain valve used for the same |
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| CN113847737A (en) | 2021-12-28 |
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