CN216078437U

CN216078437U - Anti-freezing valve and water heater applying same

Info

Publication number: CN216078437U
Application number: CN202121484419.0U
Authority: CN
Inventors: 秦刚; 张陈诗
Original assignee: Ningbo Fotile Kitchen Ware Co Ltd
Current assignee: Ningbo Fotile Kitchen Ware Co Ltd
Priority date: 2021-06-30
Filing date: 2021-06-30
Publication date: 2022-03-18
Anticipated expiration: 2031-06-30

Abstract

The utility model relates to an anti-freezing valve and a water heater using the same, wherein the anti-freezing valve comprises a valve body and is characterized in that: the valve body is internally nested with an inner cylinder, the inner cylinder is provided with a first water passing channel communicated with the water inlet and the water outlet and a second water passing channel communicated with the water outlet and the water outlet, the inner cylinder is also internally provided with a switch piece capable of alternatively opening the first water passing channel and the second water passing channel and a driving mechanism capable of driving the switch piece to move along the direction of the water outlet, compared with the prior art, the valve has the advantages that: the switch part driven by the driving mechanism to move can be switched from a position for opening the first water passing channel to a position for opening the second water passing channel, and an implementation mode of the anti-freezing valve is provided for realizing automatic control of the gas rapid water heater.

Description

Anti-freezing valve and water heater applying same

Technical Field

The utility model relates to a valve for a water heater, in particular to an anti-freezing valve and a water heater applying the anti-freezing valve.

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.

SUMMERY OF THE UTILITY MODEL

The first technical problem to be solved by the present invention is to provide an antifreezing valve which is convenient for users to operate in view of the above-mentioned prior art.

The second technical problem to be solved by the present invention is to provide a water heater using the above mentioned frost valve, in view of the above mentioned prior art.

The technical scheme adopted by the utility model for solving the first technical problem is as follows: the antifreezing valve comprises a valve body, wherein 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 first accommodating cavity are formed in the valve body; the method is characterized in that: the valve body is internally nested with an inner barrel, the inner barrel is provided with a first water passing channel communicated with the water inlet and the water outlet and a second water passing channel communicated with the water outlet and the water outlet, a switch piece capable of alternatively opening the first water passing channel and the second water passing channel is further arranged in the inner barrel, and a driving mechanism capable of driving the switch piece to move along the direction of the water outlet so as to enable the switch piece to be switched from the position of opening the first water passing channel to the position of opening the second water passing channel.

In order to close the first water passage by the switch member, from the viewpoint of simple structure, it is preferable that the inner circumferential wall of the inner cylinder is provided with a first limit notch adjacent to the first water passage, and the switch member includes a first sealing portion capable of sealing the first limit notch, and when the switch member is driven by the driving mechanism to move in the direction of the water outlet, the switch member is capable of deflecting in its circumferential direction, and the first sealing portion is limited in the first limit notch under the actuation of the deflecting force, so as to close the first water passage.

In order to close the second water passage by the switch, it is preferable that the inner circumferential wall of the inner cylinder is provided with a second limiting notch adjacent to the second water passage, the switch includes a second sealing portion capable of sealing the second limiting notch, the valve body is provided with a first fixing seat communicated with the drain outlet corresponding to the drain outlet, the first fixing seat is connected with a first elastic member, and the first elastic member acts on the second sealing portion to limit the second sealing portion in the second limiting notch, so as to close the second water passage.

In order to realize that the switching element alternatively opens the first water passing channel and the second water passing channel, preferably, the switching element further comprises a rod body connecting the first sealing part and the second sealing part, the outer end of the rod body extends out of the valve body and is linked with the driving mechanism, and the inner end of the rod body is fixed on the first fixing seat.

In order to realize that the first water passing channel is opened by the first sealing part, preferably, a second fixed seat is arranged between the first sealing part and the outer end of the rod body of the valve body, a second elastic part is connected to the second fixed seat, and the second elastic part acts on the first sealing part to enable the first sealing part to have a tendency of opening the first water passing channel, so that the first sealing part can be limited in the first limiting notch only under the actuation of deflection force, and the first water passing channel is closed.

The driving mechanism further comprises an outer cylinder connected with the valve body, a cam body capable of rotating in the outer cylinder and advancing and retreating towards the direction of the water outlet, and a driving rod capable of pushing the cam body to advance towards the direction of the water outlet, wherein the cam body is connected with the outer end of the rod body, the outer cylinder is provided with a limiting structure for limiting the advancing position and the retreating position of the cam body, the cam body and the rod body advance towards the direction of the water outlet together in the state of pressing the driving rod and are kept at the advancing position under the action of a deflection force, and the cam body and the rod body return to the retreating position together in the state of releasing the pressing of the driving rod. When the user presses the driving rod, the cam body and the rod body can move forwards towards the water outlet to be kept at the forward position, namely the position of opening the second water passing channel, and the user presses the driving rod to release the pressing force of the driving rod, so that the cam body and the rod body can move backwards away from the direction of the water outlet to return to the backward position, namely the position of opening the first water passing channel.

In order to keep the cam body and the lever body at the advanced position, that is, at the position of opening the second water passage when the cam body and the lever body are advanced in the direction of the drain opening, it is preferable that the front end of the drive lever forms a serration capable of pushing the cam body forward, the outer surface of the cam body forms a protrusion connected and fixed to the serration, the stopper structure is such that the inner circumferential surface of the outer cylinder forms a shallow groove and a deep groove alternately in the circumferential direction by a raised portion, the front end of the shallow groove forms a serrated cam surface for stopping the protrusion of the cam body, the protrusion of the cam body can enter the shallow groove of the outer cylinder, the cam body is kept at the advanced position in a state where the protrusion and the cam surface are connected and fixed, and the cam body is kept at the retracted position in a state where the protrusion enters the deep groove of the outer cylinder.

In order to achieve the effect that the protrusion of the cam body is held at the advanced position after entering the front end of the shallow groove and deflects in the circumferential direction thereof, and thereby the first sealing portion of the opening/closing member is stopped at the first stopper notch to close the first water passage, it is preferable that the cam surface formed at the front end of the shallow groove in a zigzag shape includes a first cam surface and a second cam surface which deflect the cam body in the circumferential direction, the first cam surface is parallel to the direction of the deep groove, and the second cam surface is deeper than the first cam surface and gradually deflects and inclines in the circumferential direction from the rear to the front.

In order to prevent the driving rod from sliding out of the outer cylinder, the outer surface of the driving rod is preferably provided with a limiting convex part for preventing the driving rod from sliding out of the outer cylinder.

In order to solve the second technical problem, the utility model further provides a water heater with the anti-freezing valve, which comprises a casing, and is characterized in that: the valve body is connected to the water inlet connector of the casing.

Compared with the prior art, the utility model has the advantages that: the valve body is integrated with the water inlet, the water outlet and the water outlet, the inner cylinder is provided with the first water passing channel communicated with the water inlet and the water outlet and the second water passing channel communicated with the water outlet and the water outlet, and the switch part driven to move by the driving mechanism is arranged at the same time, so that the position of opening the first water passing channel can be switched to the position of opening the second water passing channel, further the switching of water inlet and water outlet is realized, and an implementation mode of the anti-freezing valve is provided for realizing the automatic control of the gas quick water heater.

Drawings

FIG. 1 is a schematic view of a freeze valve according to an embodiment of the present invention;

FIG. 2 is a sectional view of the antifreeze valve of the embodiment of the present invention in a normal use state;

FIG. 3 is a sectional view of the antifreeze valve of the embodiment of the present invention in the antifreeze state;

FIG. 4 is an exploded, schematic view of a freeze valve according to an embodiment of the present invention;

FIG. 5 is an exploded view of the drive mechanism in an embodiment of the present invention;

FIG. 6 is a structural sectional view showing the cam body with its projection in the deep groove of the outer cylinder in the embodiment of the present invention;

fig. 7 is a structural sectional view showing the structure in which the projections of the cam body are located in the shallow grooves of the outer cylinder in the embodiment of the present invention.

Detailed Description

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

As shown in FIGS. 1 to 7, the embodiment of the present invention is shown. The anti-freezing valve of the embodiment comprises a valve body 1 with an accommodating cavity 10 therein, wherein the valve body 1 is provided with a water inlet 11, a water outlet 12 and a water outlet 13 which are communicated with the accommodating cavity 10, an inner cylinder 2 is nested in the valve body 1, the inner cylinder 2 is provided with a first water passing channel 21 communicated with the water inlet 11 and the water outlet 12 and a second water passing channel 22 communicated with the water outlet 12 and the water outlet 13, the inner cylinder 2 is also internally provided with a switch member 3 capable of alternatively opening the first water passing channel 21 and the second water passing channel 22 and a driving mechanism 6 capable of driving the switch member 3 to move along the direction of the water outlet 13, so that the switch member 3 is switched from a position for opening the first water passing channel 21 to a position for opening the second water passing channel 22. The valve body 1 is integrated with the water inlet 11, the water outlet 12 and the water outlet 13, the inner cylinder 2 is provided with the first water passing channel 21 communicated with the water inlet 11 and the water outlet 12 and the second water passing channel 22 communicated with the water outlet 12 and the water outlet 13, and the switch part 3 driven by the driving mechanism 6 to move is arranged, so that the position of opening the first water passing channel 21 can be switched to the position of opening the second water passing channel 22, and the switching of water inlet and water drainage can be realized.

Specifically, in order to close the first water passage 21 by the switch member 3, from the viewpoint of simple structure, it is preferable that the inner peripheral wall of the inner cylinder 2 is provided with a first limit notch 23 adjacent to the first water passage 21, and the switch member 3 includes a first sealing portion 31 capable of sealing the first limit notch 23, and when the switch member 3 moves in the direction in which the drain opening 13 is driven by the driving mechanism 6, the switch member can deflect in its own circumferential direction, and the first sealing portion 31 can be limited in the first limit notch 23 by the actuation of the deflecting force, so as to close the first water passage 21. Similarly, in order to close the second water passing channel 22 by the switch member 3, the inner peripheral wall of the inner cylinder 2 is provided with a second limit notch 24 adjacent to the second water passing channel 22, the switch member 3 comprises a second sealing portion 32 capable of sealing the second limit notch 24, the valve body 1 is provided with a first fixed seat 14 communicated with the water outlet 13 corresponding to the water outlet, the first fixed seat 14 is connected with a first elastic member 4, and the first elastic member 4 acts on the second sealing portion 32 to enable the second sealing portion 32 to have a tendency of limiting the second sealing portion 32 in the second limit notch 24, so that the second water passing channel 22 is closed. The switch member 3 of this embodiment further includes a rod 33 connecting the first sealing portion 31 and the second sealing portion 32, an outer end of the rod 33 extends out of the valve body 1 to be linked with the driving mechanism 6, and an inner end of the rod 33 is fixed on the first fixing seat 14. In order to open the first water passing channel 21 by the first sealing part 31, the second fixing seat 15 is arranged between the first sealing part 31 and the outer end of the rod body 33 of the valve body 1, the second fixing seat 15 is connected with the second elastic piece 5, the second elastic piece 5 acts on the first sealing part 31, so that the first sealing part 31 tends to open the first water passing channel 21, and the first sealing part 31 can be limited in the first limiting notch 23 only under the actuation of deflection force, so that the first water passing channel 21 is closed.

The driving mechanism 6 of the present embodiment includes an outer cylinder 61 connected to the valve body 1, a cam 62 capable of rotating in the outer cylinder 61 and moving forward and backward in the direction of the drain opening 13, and a driving lever 63 capable of pushing the cam 62 forward in the direction of the drain opening 13, wherein the cam 62 is connected to the outer end of the rod 33, and the outer cylinder 61 has a limit structure for limiting the forward position and the backward position of the cam 62, and in a state where the driving lever 63 is pressed, the cam 62 moves forward in the direction of the drain opening 13 together with the rod 33 and is held in the forward position by a biasing force, and in a state where the pressing of the driving lever 63 is released, the cam 62 returns to the backward position together with the rod 33. When the user presses the driving lever 63, the cam 62 and the lever 33 can move forward toward the water outlet 13 to be kept at the forward position, i.e., the position of opening the second water passage 22, and when the user presses the driving lever 63 to release the pressing force of the driving lever 63, the cam 62 and the lever 33 can move backward away from the water outlet 13 to return to the backward position, i.e., the position of opening the first water passage 21. When the cam body 62 and the rod body 33 can move forward in the direction of the drain opening 13, the driving rod 63 is held at a forward position, that is, at a position of "opening the second water passage 22", the front end of the driving rod 63 forms a saw tooth 631 capable of pushing the cam body 62 forward, the outer surface of the cam body 62 forms a protrusion 621 connected and fixed to the saw tooth 631, the inner circumferential surface of the outer cylinder 61 forms a shallow groove 611 and a deep groove 612 alternating in the circumferential direction by a raised portion, the front end of the shallow groove 611 forms a saw-toothed cam surface for restricting the protrusion 621 of the cam body 62, the protrusion 621 of the cam body 62 can enter the shallow groove 611 of the outer cylinder 61, the cam body 62 is held at the forward position in a state where the protrusion 621 is connected and fixed to the cam surface, and the cam body 62 is held at the backward position in a state where the protrusion 621 enters the deep groove 612 of the outer cylinder 61. In order to keep the protrusion 621 of the cam body 62 at the advanced position after entering the front end of the shallow groove 611 and to deflect itself in the circumferential direction, thereby realizing that the first sealing portion 31 of the switching member 3 is stopped and relayed by the first stopper notch 23 to close the first water passage 21, the front end of the shallow groove 611 is formed with a serrated cam surface including a first cam surface 611a and a second cam surface 611b for deflecting the cam body 62 in the circumferential direction, the first cam surface 611a is parallel to the direction of the deep groove 612, and the second cam surface 611b is deeper than the first cam surface 611a and gradually deflects and inclines in the circumferential direction from the rear to the front of the first cam surface 611 a. Finally, in order to prevent the driving rod 63 from slipping out of the outer cylinder 61, the outer surface of the driving rod 63 has a stopper protrusion 632 for preventing it from slipping out of the outer cylinder 61.

The embodiment also provides a water heater with the anti-freezing valve, which comprises a machine shell, wherein the valve body 1 is connected to a water inlet connector of the machine shell, the device is only required to be additionally arranged on a cold water inlet pipeline of the water heater during installation, other structures of the water heater are not required to be changed, and the water heater is convenient to install and use.

In summary, the waterway path of the antifreeze valve in the water inlet and water discharge states is as follows: taking the water inlet 11 as an example and the water outlet 13 as an example, the water outlet 12 is unfolded between the water inlet 11 and the water outlet 13;

in a normal state (refer to fig. 2), the first elastic element 4 acts on the second sealing part 32 to limit the second sealing part 32 in the second limit notch 24 and close the second water passing channel 22, the second elastic element 5 acts on the first sealing part 31, and the first sealing part 31 is in a state of opening the first water passing channel 21 and is in a normal water inlet state;

when preventing frost cracking in winter (refer to fig. 3), the user can press the driving rod 63 downwards, since the front end of the driving rod 63 forms the saw tooth 631 capable of pushing the cam body 62 forwards, and correspondingly, the outer surface of the cam body 62 forms the protrusion 621 connected and fixed with the saw tooth 631, and the inner circumferential surface of the outer cylinder 61 forms the shallow groove 611 and the deep groove 612 alternating along the circumferential direction through the raised part, and the front end of the shallow groove 611 forms the saw tooth cam surface, for this reason, when the driving rod 63 is pressed downwards, the cam body 62 can move downwards along the deep groove 612 along the direction of the water outlet 13 along with the driving rod 63, when the protrusion 621 of the cam body 62 rotates into the shallow groove 611, under the state that the protrusion 621 is connected and fixed with the cam surface, the cam body 62 is kept at the advancing position, thereby the first sealing part 31 of the switch member 3 is stopped at the first limit notch 23 to close the first water passage 21, and the second water passage 22 is opened, at this time, the water is in a drainage and anti-freezing state;

when the pressing state of the driving rod 63 is released, the cam body 62 is kept at the retreating position under the condition that the protrusion 621 of the cam body 62 enters the deep groove 612 of the outer cylinder 61, and at this time, the first sealing part 31 is restored to the state of opening the first water passing channel 21 again under the action of the elastic restoring force of the second elastic member 5, and the normal water inlet state can be switched.

Claims

1. An anti-freezing valve comprises a valve body (1), wherein an accommodating cavity (10) is formed in the valve body (1), and a water inlet (11), a water outlet (12) and a water outlet (13) which are communicated with the accommodating cavity (10) are formed in the valve body (1); the method is characterized in that: an inner cylinder (2) is nested in the valve body (1), the inner cylinder (2) is provided with a first water passing channel (21) communicated with the water inlet (11) and the water outlet (12) and a second water passing channel (22) communicated with the water outlet (12) and the water outlet (13), a switch piece (3) capable of opening the first water passing channel (21) and the second water passing channel (22) alternatively and a driving mechanism (6) capable of driving the switch piece (3) to move along the direction of the water outlet (13) are further arranged in the inner cylinder (2), so that the switch piece (3) is switched from the position of opening the first water passing channel (21) to the position of opening the second water passing channel (22).

2. The antifreeze valve according to claim 1, wherein: the inner peripheral wall of the inner barrel (2) is provided with a first limiting notch (23) adjacent to the first water passing channel (21), the switch piece (3) comprises a first sealing part (31) capable of sealing the first limiting notch (23), when the switch piece (3) is driven by the driving mechanism (6) to move in the direction of the water outlet (13), the switch piece can deflect in the circumferential direction, and the first sealing part (31) can be limited in the first limiting notch (23) under the actuation of the deflection force, so that the first water passing channel (21) is closed.

3. The antifreeze valve according to claim 2, wherein: the inner peripheral wall of the inner barrel (2) is provided with a second limiting notch (24) adjacent to the second water passing channel (22), the switch piece (3) comprises a second sealing part (32) capable of sealing the second limiting notch (24), the valve body (1) is provided with a first fixing seat (14) communicated with the water outlet (13) corresponding to the water outlet, the first fixing seat (14) is connected with a first elastic piece (4), and the first elastic piece (4) acts on the second sealing part (32) to enable the second sealing part (32) to have a tendency of being limited in the second limiting notch (24), so that the second water passing channel (22) is closed.

4. The antifreeze valve according to claim 3, wherein: the switch piece (3) is characterized by further comprising a rod body (33) connected with the first sealing portion (31) and the second sealing portion (32), the outer end of the rod body (33) extends out of the valve body (1) and the driving mechanism (6) are linked, and the inner end of the rod body (33) is fixed on the first fixing seat (14).

5. The antifreeze valve according to claim 4, wherein: the valve body (1) is arranged between the first sealing portion (31) and the outer end of the rod body (33) and is provided with a second fixing seat (15), a second elastic piece (5) is connected to the second fixing seat (15), the second elastic piece (5) acts on the first sealing portion (31) to enable the first sealing portion to have a tendency of opening the first water passing channel (21), and the first sealing portion (31) can be limited in the first limiting notch (23) only under the actuation of deflection force, so that the first water passing channel (21) is closed.

6. The antifreeze valve according to claim 4 or 5, wherein: the driving mechanism (6) comprises an outer cylinder (61) connected with the valve body (1), a cam body (62) which can rotate in the outer cylinder (61) and advance and retreat towards the direction of the water outlet (13), and a driving rod (63) which can push the cam body (62) to advance towards the direction of the water outlet (13), wherein the cam body (62) is connected with the outer end of the rod body (33), the outer cylinder (61) is provided with a limiting structure for limiting the advancing position and the retreating position of the cam body (62), under the state that the driving rod (63) is pressed, the cam body (62) and the rod body (33) advance towards the water outlet (13) and are kept at the advancing position under the action of deflection force, when the pushing state of the drive lever (63) is released, the cam body (62) returns to the retreated position together with the lever body (33).

7. The antifreeze valve according to claim 6, wherein: the front end of the driving rod (63) is provided with a saw tooth (631) which can push the cam body (62) forwards, and the outer surface of the cam body (62) is formed with a protrusion (621) connected and fixed with the sawtooth (631), the limiting structure is characterized in that shallow grooves (611) and deep grooves (612) which are alternated along the circumferential direction are formed on the inner circumferential surface of the outer cylinder (61) through raised parts, the front ends of the shallow grooves (611) form sawtooth-shaped cam surfaces, the cam surface limits the protrusion (621) of the cam body (62), the protrusion (621) of the cam body (62) can enter the shallow groove (611) of the outer cylinder (61), the cam body (62) is held at the advanced position in a state where the projection (621) is fixedly connected to the cam surface, and the cam body (62) is held at the retreated position in a state where the projection (621) enters the deep groove (612) of the outer cylinder (61).

8. The antifreeze valve according to claim 7, wherein: the cam surface formed with the sawtooth shape at the front end of the shallow groove (611) comprises a first cam surface (611a) and a second cam surface (611b) which enable the cam body (62) to deflect along the circumferential direction, the first cam surface (611a) is parallel to the direction of the deep groove (612), and the second cam surface (611b) is deeper than the first cam surface (611a) and gradually deflects and inclines along the circumferential direction from the back to the front of the first cam surface (611 a).

9. The antifreeze valve according to claim 8, wherein: the outer surface of the driving rod (63) is provided with a limiting convex part (632) which prevents the driving rod from sliding out of the outer cylinder (61).

10. A water heater using the frost valve of any of claims 1 to 9, comprising a housing, wherein: the valve body (1) is connected to the water inlet connector of the casing.