CN111022703A

CN111022703A - Anti-freezing valve and gas water heater using same

Info

Publication number: CN111022703A
Application number: CN201911379411.5A
Authority: CN
Inventors: 金晶; 周高云; 段裘铭
Original assignee: Ningbo Fotile Kitchen Ware Co Ltd
Current assignee: Ningbo Fotile Kitchen Ware Co Ltd
Priority date: 2019-12-27
Filing date: 2019-12-27
Publication date: 2020-04-17

Abstract

The invention relates to an anti-freezing valve and a gas water heater using the same, wherein the anti-freezing valve comprises a valve body, an accommodating cavity is formed in the valve body, and a water inlet, a water outlet and a water outlet which are communicated with the accommodating cavity are formed in the valve body; the valve ball can be rotatably arranged in the accommodating cavity and can rotate to a first position or a second position, the valve ball is provided with a through water passing channel, two ends of the water passing channel are respectively and correspondingly communicated with the water inlet and the water outlet in a fluid mode under the condition that the valve ball is at the first position, and two ends of the water passing channel are respectively and correspondingly communicated with the water outlet and the water outlet in a fluid mode under the condition that the valve ball is at the second position; and one end of the valve rod penetrates through the valve body and is connected with the valve ball, and the other end of the valve rod is positioned outside the valve body and serves as a driving end. The valve rod is arranged, so that the antifreezing valve disclosed by the invention has low dependence on electrical elements and can be manually operated.

Description

Anti-freezing valve and gas water heater using same

Technical Field

The invention belongs to the technical field of water heaters, and particularly relates to an anti-freezing valve and a gas water heater using the same.

Background

The gas water heater is communicated with the outdoor environment through the smoke exhaust pipe, and cold air easily enters the water heater along the smoke exhaust pipe when the outdoor temperature is lower than zero centigrade in cold winter, so that the weak part of a water path pipeline of the water heater is frozen and cracked, and most of the gas water heaters are additionally provided with the electric heating anti-freezing cracking device, so that a certain anti-freezing function is achieved. The electric heating anti-frost-crack device can normally start to work only when the water heater is in a power-on state, and the situation that the electric heating device cannot be started and a water heater pipeline is frost-cracked due to the fact that some users have the habit of pulling out a power plug of the water heater after using the water heater, or have power failure at home, or a newly-decorated house does not use power failure for a long time and the like can be caused. The water channel of the water heater is usually a normally open valve at the water inlet end and a normally closed valve at the water outlet end, so that if a user does not find that the water inlet valve is closed in time, the whole machine leaks water, and property loss and safety problems such as water soaking on the floor, electric leakage and the like are caused.

In order to solve the above problems, the chinese utility model patent with patent number CN201220167240.7 (publication number CN202708175U) discloses a "valve ball and an anti-freezing valve with the same", wherein the valve ball comprises a body, a first channel and a second channel, the first channel is arranged on the body, the second channel is arranged on the body, the first channel and the second channel are not communicated with each other. The antifreezing valve comprises a valve body, the valve ball and a valve rod for driving the valve ball to rotate, wherein the valve ball is arranged in the valve body, a water inlet, a water outlet and a water outlet are formed in the valve body, the first channel is arranged corresponding to the water outlet and the water inlet, and the second channel is arranged corresponding to the water outlet and the water outlet. In the water inlet state, the first channel enables the water inlet to be communicated with the water outlet, and the water outlet is in the closed state. In the drainage state, the second channel enables the drainage port to be communicated with the water outlet, so that accumulated water remained in a water tank of the gas water heater connected with the anti-freezing valve can be completely drained.

The antifreezing valve has the following defects: 1. a limiting structure for limiting the rotation angle of the valve rod is not arranged, so that if the valve rod rotates excessively or does not rotate in place, the first channel cannot be communicated with the water inlet and the water outlet or the second channel cannot correspond to the water outlet and the water outlet; 2. the valve rod is low in use frequency and only used when water needs to be drained, and when the valve rod is not used for a long time, internal lubricating oil is condensed, so that the valve rod is difficult to rotate; 3. the valve ball is provided with a first channel and a second channel which are not communicated with each other, namely two flow channels are required to realize the communication switching from the water inlet and the water outlet to the water outlet and the water outlet, one flow channel is communicated with the water inlet and the water outlet, and the other flow channel is communicated with the water outlet and the water outlet, so that the valve ball is complex and is not easy to process.

For example, the solar water heater pipeline frost valve disclosed in the chinese utility model with the patent number CN200720023750.6 (publication number CN201093097Y) is composed of an electronic actuator, a valve core and a valve body, the valve core is a ball valve, and is a two-position three-way valve, a right-angle channel is arranged in the valve core, and the on-off of the water channel is controlled by the electronic actuator. The valve core of the antifreezing valve is only provided with one channel, so that the antifreezing valve is simple, but the rotation of the valve core is controlled by an electronic actuator, and if the valve core is in a power-off condition, the valve core cannot rotate, water in a pipeline cannot be drained, and finally the pipeline is cracked.

Disclosure of Invention

The first technical problem to be solved by the invention is to provide an antifreezing valve with a valve ball rotating independent of an electric control element, aiming at the current situation of the prior art.

The second technical problem to be solved by the present invention is to provide an antifreeze valve which prevents the valve rod driving the valve ball to rotate from being used for a long time and being difficult to rotate, aiming at the current situation of the prior art.

The third technical problem to be solved by the present invention is to provide a water heater using the above anti-freezing valve, in which the rotation of the valve ball does not depend on the electric control element, in view of the current situation of the prior art.

The technical scheme adopted by the invention for solving the first technical problem is as follows: an antifreeze valve comprises

The valve body is internally provided with an accommodating cavity, and the valve body is provided with a water inlet, a water outlet and a water outlet which are communicated with the accommodating cavity;

the valve ball can be rotatably arranged in the accommodating cavity and can rotate to a first position or a second position, the valve ball is provided with a through water passing channel, two ends of the water passing channel are respectively and correspondingly communicated with the water inlet and the water outlet in a fluid mode under the condition that the valve ball is at the first position, and two ends of the water passing channel are respectively and correspondingly communicated with the water outlet and the water outlet in a fluid mode under the condition that the valve ball is at the second position;

it is characterized by also comprising

And one end of the valve rod penetrates through the valve body and is connected with the valve ball, and the other end of the valve rod is positioned outside the valve body and serves as a driving end.

In order to facilitate waterway switching, the water passing channel comprises a first channel and a second channel which penetrate through the center of the valve ball and are vertically crossed, one end of each of the first channel and the second channel is communicated with the valve ball, the central line of the water inlet end of the water outlet is perpendicular to the central line of the water inlet end of the water outlet, and the central line of the water inlet end of the water outlet is perpendicular to the central line of the water outlet end of the water inlet. The structure of the valve body and the valve ball enables a user to realize waterway switching only by clockwise or anticlockwise rotating for 90 degrees, and avoids the situation that the waterway inside the valve ball is complex and the user easily rotates not in place.

In order to facilitate the rotation of a user, a knob which is convenient for rotating the valve rod is arranged on the driving end of the valve rod, a limiting structure which limits the rotation angle of the valve rod is arranged between the knob and the valve body, and the situation that the user does not rotate the valve ball in place and fails in water path switching is further prevented by the limiting structure.

The limiting structure can have various structural forms, preferably, the valve body is provided with a valve rod seat which is used for the valve rod to penetrate through and rotate relatively at the position corresponding to the valve rod, a first limiting rib and a second limiting rib which extend axially are arranged on the circumferential wall of the valve rod seat at intervals along the circumferential direction, a stop block which can alternatively abut against the first limiting rib and the second limiting rib is arranged at the position corresponding to the position between the first limiting rib and the second limiting rib on the knob, and the first limiting rib, the second limiting rib and the stop block jointly form the limiting structure.

In order to further facilitate the user to rotate the valve rod in place to realize the effective switching of the water route, be equipped with the identification plate that is used for indicateing the turned position of knob between knob and the valve body, this identification plate links to each other with the valve body and sets up the through-hole that supplies valve rod seat, first spacing muscle and the spacing muscle of second to pass on the identification plate, be equipped with the identification structure who instructs the turned position of knob on the identification plate. Therefore, the user can rotate the knob to the position corresponding to the identification structure according to the identification structure on the identification plate.

In order to ensure the sealing performance between the valve ball and the valve body, a first sealing ring which is close to the water outlet end of the water inlet and is in sealing contact with the valve ball and a second sealing ring which is close to the water inlet end of the water outlet and is in sealing contact with the valve ball are arranged in the accommodating cavity of the valve body. The first sealing ring can prevent water from leaking into the accommodating cavity from the water inlet and then flowing out of the water outlet to cause water leakage when the water outlet is in fluid communication with the water outlet; the second sealing ring ensures that water cannot leak out from the water outlet when the water outlet is in fluid communication with the water inlet.

The technical scheme adopted by the invention for solving the second technical problem is as follows: the valve body is provided with a through hole for the valve rod to pass through, the outer side of the through hole is provided with a containing groove communicated with the through hole, and the driving assembly is arranged in the containing groove and can at least partially extend out of the containing groove to push the valve rod to rotate.

The drive assembly can have multiple structural style, and preferably, the drive assembly is temperature sensing drive arrangement, including heating coil, paraffin and ejector pin set gradually along being close to the valve rod direction, heating coil sets up on the paraffin periphery wall, the outer wall epirelief of valve rod is equipped with the lug, just the lug is located the ejector pin and moves towards the valve rod on the route. When a user uses the water heater, the heating coil works, paraffin is subjected to phase change expansion to push the ejector rod to move towards the valve rod, and a convex block on the valve rod is pushed in the moving process of the ejector rod to enable the valve rod to realize micro-angle rotation, so that the valve rod can be easily rotated; when a user does not use the water heater, the water heater is in a standby state or a shutdown state, the heating coil does not work, paraffin is recovered to be solid, and the valve rod rotates in the opposite direction to enable the convex block to push the ejector rod to return to the initial position.

In order to make contact all the time between paraffin and the ejector pin, drive assembly is still including locating the spring in the storage tank, the spring both ends lean on inner wall and the paraffin of storage tank respectively, and the spring makes and remains the contact state all the time between paraffin and the ejector pin, and the paraffin of not only being convenient for like this promotes the ejector pin and removes towards the lug direction, also can prevent the hard interference between lug and the paraffin, because if not set up the spring, when paraffin resumes solid-state, there is the clearance between paraffin and the ejector pin, at this moment when the lug promotes the ejector pin and resets, the lug can strike paraffin and cause the part damage, and set up the spring and then can solve this problem.

The technical scheme adopted by the invention for solving the third technical problem is as follows: the gas water heater using the anti-freezing valve is characterized in that: the water heater also comprises a water heater body, and the water outlet of the valve body is in fluid communication with the water inlet end of the water heater body.

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 along a flow path from the first portion and/or 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 element, 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 through, or a combination thereof.

Compared with the prior art, the invention has the advantages that: 1. the valve rod is arranged, and the valve ball is driven to rotate by the valve rod, so that the condition that the valve ball cannot rotate to switch a water channel and cannot drain water when no electricity exists is avoided, and if the antifreezing valve cannot drain water, water in a pipeline is frozen and expands to crack the pipeline and then leaks water, the valve rod is arranged, so that the antifreezing valve disclosed by the invention is low in dependence on electrical elements and can be manually operated; 2. the through water channel is arranged in the ball valve, so that the internal waterway has a simple structure, the processing is convenient, the waterway switching is convenient, otherwise, the waterway switching is difficult for a user if the internal waterway is complicated, and the situations that the valve ball rotates not in place and the waterway switching fails are easily caused; 3. the valve rod switching mechanism is provided with the driving assembly, when the valve rod is not used for a long time, the driving assembly can partially extend out of the accommodating groove to push the valve rod to rotate by a tiny angle, so that the dilemma that the valve rod is difficult to rotate is relieved, and a user can conveniently rotate the valve rod to switch a water channel.

Drawings

Fig. 1 is a schematic structural view of an antifreeze valve according to embodiment 1 of the present invention;

FIG. 2 is a schematic view of the structure of FIG. 1 in another direction;

FIG. 3 is a cross-sectional view of FIG. 1 (with the valve ball in a first position);

FIG. 4 is a cross-sectional view of FIG. 1 (with the valve ball in a second position);

FIG. 5 is a cross-sectional view in another direction of FIG. 1;

FIG. 6 is an exploded view of FIG. 1;

FIG. 7 is a schematic structural view of the valve ball of FIG. 1;

FIG. 8 is a schematic view of the knob of FIG. 1;

FIG. 9 is a schematic structural view of the anti-freeze valve of FIG. 1 applied to a gas water heater;

FIG. 10 is a sectional view of the antifreeze valve according to the embodiment 2 of the present invention;

fig. 11 is a cross-sectional view of the drive assembly of fig. 10.

Detailed Description

The invention is described in further detail below with reference to the accompanying examples.

Example 1

As shown in fig. 1 to 9, the gas water heater of the preferred embodiment includes a water heater body 8 and an anti-freezing valve a, wherein the anti-freezing valve a includes a valve body 1, a valve ball 2, a valve rod 3 and a knob 4.

The valve body 1 is internally provided with an accommodating cavity 11, the valve body 1 is provided with a water inlet 12, a water outlet 13 and a water outlet 14 which are communicated with the accommodating cavity 11, and the water outlet 13 of the valve body 1 is in fluid communication with the water inlet end of the water heater body 8.

The valve ball 2 is rotatably disposed in the accommodating cavity 11 and can rotate to a first position or a second position, a through water passage 21 is formed in the valve ball 2, that is, two ends of the water passage 21 penetrate through the outer wall of the valve ball 2, as shown in fig. 3, when the valve ball 2 is at the first position, two ends of the water passage 21 are respectively and correspondingly in fluid communication with the water inlet 12 and the water outlet 13, and as shown in fig. 4, when the valve ball 2 is at the second position, two ends of the water passage 21 are respectively and correspondingly in fluid communication with the water outlet 13 and the water outlet 14.

As shown in fig. 3 and 7, in the present embodiment, the water passing channel 21 includes a first channel 211 and a second channel 212, both of which pass through the center of the valve ball 2 and intersect vertically, each of the first channel 211 and the second channel 212 has one end penetrating through the valve ball 2, and one end of the first channel 211 penetrating through the valve ball 2 and one end of the second channel 212 penetrating through the valve ball 2 are both ends of the water passing channel 21. The center line of the water inlet end of the water outlet 13 and the center line of the water inlet end of the water outlet 14 are perpendicular to each other, and the center line of the water inlet end of the water outlet 13 and the center line of the water outlet end of the water inlet 12 are perpendicular to each other. Therefore, the valve ball 2 rotates clockwise or anticlockwise by 90 degrees to realize the switching between the first position and the second position so as to realize the waterway switching.

As can be seen from the above, the valve ball 2 of the present embodiment has only one water passage 21 (formed by the first passage 211 and the second passage 212), which is convenient for processing and manufacturing, and the water passage is simple, so that the user can switch the water passage conveniently.

Valve rod 3 one end is passed valve body 1 and is linked to each other with valve ball 2, offers the perforation 17 that supplies valve rod 3 to pass on the valve body 1, offers the one end that supplies valve rod 3 on the valve ball 2 and inserts the first slot 22 of locating in. The other end of valve rod 3 is located valve body 1 and is regarded as the drive end outward, and is equipped with the knob 4 of being convenient for rotate valve rod 3 on the drive end of valve rod 3, is equipped with the second slot 42 that supplies the drive end cartridge of valve rod 3 in on the knob 4, and the cross-section of the drive end of valve rod 3 is the D type, and the cross-section of second slot 42 is the D type with the drive end looks adaptation of valve rod 3, can prevent the relative knob 4 rotation of valve rod 3 like this.

As shown in fig. 6 and 8, a limit structure for limiting the rotation angle of the valve rod 3 is arranged between the knob 4 and the valve body 1, and the limit structure can prevent the situations that a user does not rotate in place and the waterway switching fails. In this embodiment, the valve body 1 has a valve stem seat 19 through which the valve stem 3 passes at a position corresponding to the valve stem 3, the valve stem 3 can rotate relative to the valve stem seat 19, the through hole 17 is partially opened on the valve stem seat 19, the circumferential wall of the valve stem seat 19 is circumferentially provided with first limiting ribs 15 and second limiting ribs 16 extending axially at intervals, the knob 4 is provided with a stopper 41 capable of alternatively abutting against the first limiting ribs 15 and the second limiting ribs 16 (both of which refer to the first limiting ribs 15 and the second limiting ribs 16) at a position corresponding to a position between the first limiting ribs 15 and the second limiting ribs 16, and the first limiting ribs 15, the second limiting ribs 16 and the stopper 41 jointly form the limiting structure.

The rotation range of the abutting block 41 is limited between the first limiting rib 15 and the second limiting rib 16, and the valve ball 2 is in the first position under the state that the abutting block 41 abuts against the first limiting rib 15; the valve ball 2 is in the second position when the abutting block 41 abuts against the second limiting rib 16.

Of course, the limiting structure can be arranged between the valve rod 3 and the valve body 1, so that the abutting block 41 is required to be arranged on the valve rod 3, and the first limiting rib 15 and the second limiting rib 16 are still arranged on the valve body 1.

As shown in fig. 2 and 6, an identification plate 5 for prompting the rotation position of the knob 4 is disposed between the knob 4 and the valve body 1, the identification plate 5 is connected to the valve body 1, a through hole 51 for allowing the valve rod seat 19, the first limiting rib 15 and the second limiting rib 16 to pass through is disposed on the identification plate 5, and an identification structure 52 for indicating the rotation position of the knob 4 is disposed on the identification plate 5. The user can then turn the knob 4 to the position corresponding to the sign board 5 according to the sign structure 52 on the sign board 5. In this embodiment, as shown in fig. 2, the identification structure 52 is in the words of "power on operation" and "freeze proof drainage", but may be in other structures, such as scales.

As shown in fig. 3 and 4, the accommodating cavity 11 of the valve body 1 is provided with a first sealing ring 61 adjacent to the water outlet end of the water inlet 12 and in sealing contact with the valve ball 2, and a second sealing ring 62 adjacent to the water inlet end of the water outlet 14 and in sealing contact with the valve ball 2.

The first sealing ring 61 is annular, and the wall surface facing the valve ball 2 of the first sealing ring 61 is in arc transition connection with the inner hole of the first sealing ring 61, so that the first sealing ring 61 can be well matched with the valve ball 2, and water can be prevented from leaking into the accommodating cavity 11 and flowing out from the water outlet 13 to cause water leakage when the water outlet 13 is in fluid communication with the water outlet 14.

The second sealing ring 62 is provided with a stepped hole with a diameter increasing towards the valve ball 2, and each hole of the stepped hole is in arc transition connection with a corresponding wall surface of the second sealing ring 62 facing the valve ball 2, so that the second sealing ring 62 can be well matched with the valve ball 2, and water cannot leak from the water outlet 14 when the water outlet 13 and the water inlet 12 are in fluid communication.

As shown in fig. 1 and 2, in this embodiment, the valve body 1 includes a hollow tube 1a and a valve cover 1b screwed to the tube, the water inlet 12 and the water outlet 13 are provided on the tube 1a, and the water outlet 14 is provided on the valve cover 1b, so that the valve cover 1b can be conveniently detached and a water outlet pipe can be subsequently installed at the water outlet 14.

Example 2

Example 2 differs from example 1 in that: a drive assembly 7 is also provided.

As shown in fig. 10 and 11, the through hole 17 is provided with an accommodating groove 18 radially outside the through hole 17, in this embodiment, the accommodating groove 18 is formed on the first limiting rib 15, and the driving assembly 7 is disposed in the accommodating groove 18 and can at least partially extend out of the accommodating groove 18 to push the valve rod 3 to rotate. The driving assembly 7 is a temperature sensing driving device, and comprises a spring 74, a heating coil 71, paraffin 72 and an ejector rod 73, wherein the paraffin 72 and the ejector rod 73 are sequentially arranged along the direction close to the valve rod 3, the heating coil 71 is arranged on the peripheral wall of the paraffin 72, the paraffin 72 can be accommodated in a capsule, a convex block 31 is arranged on the outer wall of the valve rod 3 in a protruding manner, the convex block 31 is positioned on the path of the ejector rod 73 moving towards the valve rod 3, and two ends of the spring 74 respectively abut against the inner wall of the accommodating groove 18 and the paraffin.

The heating coil 71 is electrically connected with a controller (a PLC controller can be adopted) of the water heater, when a user uses the water heater, the controller receives a signal and controls the heating coil 71 to work, the paraffin 72 is subjected to phase change expansion to push the ejector rod 73 to move towards the valve rod 3, the cam 31 on the valve rod 3 is pushed in the moving process of the ejector rod 73 to enable the valve rod 3 to realize micro-angle rotation, and then the valve rod 3 can be easily rotated; when a user does not use the water heater, and the water heater is in a standby state or a shutdown state, the controller receives a signal and controls the heating coil 71 not to work, the paraffin 72 is recovered to be solid, and the valve rod 3 rotates in the opposite direction to enable the lug 31 to push the ejector rod 73 to return to the initial position. Of course, the operation of the heating coil 71 may be controlled in other manners.

In order to facilitate the projection 31 to push the jack 73, a corner of the jack 73 toward the end of the projection 31 may be provided as a curved surface.

Of course, the driving assembly 7 may also be an electric push rod.

Claims

1. An antifreeze valve comprises

The water-saving valve comprises a valve body (1), wherein an accommodating cavity (11) is formed in the valve body (1), and a water inlet (12), a water outlet (13) and a water outlet (14) which are communicated with the accommodating cavity (11) are formed in the valve body (1);

the valve ball (2) is rotatably arranged in the accommodating cavity (11) and can rotate to a first position or a second position, the valve ball (2) is provided with a through water passing channel (21), two ends of the water passing channel (21) are respectively and correspondingly communicated with the water inlet (12) and the water outlet (13) in a fluid mode under the condition that the valve ball (2) is located at the first position, and two ends of the water passing channel (21) are respectively and correspondingly communicated with the water outlet (13) and the water outlet (14) in a fluid mode under the condition that the valve ball (2) is located at the second position;

it is characterized by also comprising

And one end of the valve rod (3) penetrates through the valve body (1) and is connected with the valve ball (2), and the other end of the valve rod (3) is positioned outside the valve body (1) and serves as a driving end.

2. The antifreeze valve according to claim 1, wherein: the water passing channel (21) comprises a first channel (211) and a second channel (212) which penetrate through the center of the valve ball (2) and are vertically crossed, one end of each of the first channel (211) and the second channel (212) penetrates through the valve ball (2), the center line of the water inlet end of the water outlet (13) is perpendicular to the center line of the water inlet end of the water outlet (14), and the center line of the water inlet end of the water outlet (13) is perpendicular to the center line of the water outlet end of the water inlet (12).

3. The antifreeze valve according to claim 1, wherein: the valve is characterized in that a knob (4) convenient for rotating the valve rod (3) is arranged at the driving end of the valve rod (3), and a limiting structure for limiting the rotation angle of the valve rod (3) is arranged between the knob (4) and the valve body (1).

4. The antifreeze valve according to claim 3, wherein: the valve body (1) is provided with a valve rod seat (19) which is used for the valve rod (3) to penetrate through and rotate relatively at a position corresponding to the valve rod (3), a first limiting rib (15) and a second limiting rib (16) which extend axially are arranged on the peripheral wall of the valve rod seat (19) at intervals along the circumferential direction, a stop block (41) which can alternatively abut against the first limiting rib (15) and the second limiting rib (16) is arranged at a position corresponding to the position between the first limiting rib (15) and the second limiting rib (16) on the knob (4), and the first limiting rib (15), the second limiting rib (16) and the stop block (41) jointly form the limiting structure.

5. The antifreeze valve according to claim 4, wherein: be equipped with between knob (4) and valve body (1) and be used for indicateing the rotational position's of knob (4) sign board (5), this sign board (5) link to each other with valve body (1) and offer on sign board (5) through-hole (51) that supply valve rod seat (19), first spacing muscle (15) and second spacing muscle (16) to pass, be equipped with on sign board (5) and instruct the identification structure (52) of the rotational position of knob (4).

6. The antifreeze valve according to claim 1, wherein: a first sealing ring (61) which is close to the water outlet end of the water inlet (12) and is in sealing contact with the valve ball (2) and a second sealing ring (62) which is close to the water inlet end of the water discharge port (14) and is in sealing contact with the valve ball (2) are arranged in the accommodating cavity (11) of the valve body (1).

7. The antifreeze valve according to any one of claims 1 to 6, wherein: the valve body (1) is provided with a through hole (17) for the valve rod (3) to pass through, the outer side of the through hole (17) is provided with a containing groove (18) communicated with the through hole, and the driving assembly (7) is arranged in the containing groove (18) and can at least partially extend out of the containing groove (18) to drive the valve rod (3) to rotate.

8. The antifreeze valve according to claim 7, wherein: drive assembly (7) are temperature sensing drive arrangement, including heating coil (71), paraffin (72) and ejector pin (73) set gradually along being close to valve rod (3) direction, heating coil (71) set up on paraffin (72) periphery wall, the outer wall epirelief of valve rod (3) is equipped with lug (31), just lug (31) are located ejector pin (73) and move towards valve rod (3) on the route.

9. The antifreeze valve according to claim 8, wherein: the driving assembly (7) further comprises a spring (74) arranged in the accommodating groove (18), and two ends of the spring (74) are respectively abutted against the inner wall of the accommodating groove (18) and the paraffin (72).

10. A gas water heater using the anti-freezing valve as claimed in any one of claims 1 to 9, wherein: the water heater also comprises a water heater body (8), and a water outlet (13) of the valve body (1) is in fluid communication with a water inlet end of the water heater body (8).