CN216078553U

CN216078553U - Anti-freezing valve and water heater applying same

Info

Publication number: CN216078553U
Application number: CN202121484420.3U
Authority: CN
Inventors: 沈文权
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, and the anti-freezing valve comprises a valve body with an accommodating cavity, wherein the valve body is provided with a water inlet, a water outlet and a water outlet which are communicated with the accommodating cavity; the method is characterized in that: the anti-freezing device also comprises an intermediate switch part limited on the anti-freezing mechanism, and the anti-freezing mechanism can drive the intermediate switch part to switch from a water inlet opening state to a water outlet opening state when the ambient temperature is lower than the preset temperature, and compared with the prior art, the anti-freezing device has the advantages that: the water inlet, the water outlet and the water outlet are integrated on the valve body, and the anti-freezing mechanism is arranged, so that the switching of water inlet and water discharge can be completed even in a power-off state, and the problem that a heat exchanger is frozen and damaged is avoided.

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. In order to solve the above problems, for example, in the utility model patent of china with patent number ZL201510398012.9 (publication number CN104976771B), a water inlet pipe, a water outlet pipe, a bypass pipe, a water outlet pipe and a U-shaped pipe are arranged on a valve body, which is communicated with a valve cavity; the other end of the U-shaped pipe is communicated with the water outlet pipe, and the water inlet pipe, the water outlet pipe, the bypass pipe, the water outlet pipe and the communication ports of the U-shaped pipe and the valve cavity are positioned on the same circle; the valve core is provided with a first pipeline and a second pipeline which are communicated with each other; when the first pipeline conducts the water inlet pipe and the water outlet pipe, the second pipeline is closed by the valve body; when the bypass pipe and the U-shaped pipe are communicated by the first pipeline, the second pipeline is communicated with the drain pipe, and the anti-freezing device can realize the conversion of water supply and drainage functions only by rotating the valve core.

In addition, the existing water heater is also provided with an anti-freezing heating rod, so that a user can use the water heater normally, and the anti-freezing heating rod starts to work when the temperature of inlet water is lower than 5 ℃ under the condition of no power failure, so that frost cracking caused by over-low temperature is prevented; however, when the user is out of the door and the power is off, when the temperature is lower than 5 ℃, the anti-freezing heating rod cannot work, the water inlet temperature can be further reduced downwards, and when the temperature is reduced to below zero, the danger of freezing damage can be caused, so that the prior anti-freezing device needs to be further improved.

SUMMERY OF THE UTILITY MODEL

The first technical problem to be solved by the present invention is to provide an anti-freezing valve which can avoid the problem of freezing damage of a heat exchanger when a water heater is powered off, 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 with an accommodating cavity, wherein the valve body is provided with a water inlet, a water outlet and a water outlet which are communicated with the accommodating cavity; the method is characterized in that: the anti-freezing device also comprises an intermediate switch piece limited on the anti-freezing mechanism, and the anti-freezing mechanism can drive the intermediate switch piece to switch from a water inlet opening state to a water outlet opening state when the ambient temperature is lower than the preset temperature.

The intermediate switch spare is considered from simple structure's angle, preferably, the intermediate switch spare is including the intermediate junction pole, the both ends of intermediate junction pole are provided with first switch head and second switch head respectively, first switch head sets up in the inhalant canal that the water inlet corresponds, be used for opening and closing the water inlet, and the second switch head sets up in the drainage channel that the outlet corresponds, be used for opening and closing the outlet, still including making the intermediate junction pole have all the time to the outlet place direction removes in order to open the first elastic component of outlet trend.

In order to realize that the intermediate switch member is limited by the anti-freezing mechanism, preferably, the middle of the intermediate connecting rod is hollow, the anti-freezing mechanism comprises a limiting member and a second elastic member, the limiting member and the second elastic member are at least partially arranged in the middle of the intermediate connecting rod, the second elastic member applies a preset force to the limiting member to enable the intermediate connecting rod to be in a state of opening the water inlet, when the external temperature is lower than the preset value of the second elastic member, the limiting member can be driven to leave the middle of the intermediate connecting rod, and then the intermediate connecting rod can move towards the water outlet under the action of the first elastic member to open the water outlet. The second elastic element is arranged to close the antifreezing valve even in the power-off condition.

From the viewpoint of simple structure, it is preferable that the second elastic member is a heat-sensitive spring, and an elastic force applied by the heat-sensitive spring to the limiting member is reduced with a decrease in ambient temperature or is not applied to the limiting member when the ambient temperature is lower than a predetermined temperature.

Furthermore, the locating part is including being located the middle spacing head in middle part of the middle connecting rod, being located towards the first tail end of delivery port and the second tail end that sets up opposite with first tail end in the middle spacing head, correspondingly the valve body corresponds the position of second tail end is provided with mount pad and the third elastic component that supplies its installation, the third elastic component can apply force in middle spacing head removes to the delivery port place direction. When the outside temperature is lower than the preset value of the second elastic piece, the elastic force is not applied to the middle limiting head, the middle limiting head can be driven to leave the middle of the middle connecting rod under the action of the third elastic piece, so that the limitation on the middle connecting rod is removed, the middle connecting rod can move towards the direction of the water outlet under the action of the first elastic piece, and finally the water inlet is closed, the water outlet is opened, and the anti-freezing drainage is realized.

In order to facilitate connection between the second elastic element and the third elastic element, preferably, the middle limiting head protrudes out from the first tail end and the second tail end, the second elastic element is sleeved on the first tail end, one end of the second elastic element is connected to the water outlet channel corresponding to the water outlet, the other end of the second elastic element is connected to the middle limiting head, the third elastic element is sleeved on the second tail end, one end of the third elastic element is connected to the mounting seat, and the other end of the third elastic element is connected to the middle limiting head.

Also, in order to facilitate the connection of the first elastic member, it is preferable that a connection portion for connecting the first elastic member is provided outside the middle portion of the middle connection rod, wherein one end of the first elastic member is connected to the water inlet channel corresponding to the water inlet, and the other end of the first elastic member is connected to the connection portion.

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 water inlet, the water outlet and the water outlet are integrated on the valve body, and the anti-freezing mechanism is arranged, so that the switching of water inlet and water discharge can be completed even in a power-off state, and the problem that a heat exchanger is frozen and damaged is avoided.

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 in the normal state according to the embodiment of the present invention;

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

FIG. 4 is a schematic structural diagram of an intermediate switch member according to an embodiment of the present invention;

FIG. 5 is a schematic structural diagram of a limiting element according to an embodiment of the disclosure;

fig. 6 is a structural sectional view of a frost valve of a water heater according to an 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 6, the preferred embodiment of the present invention is shown. The anti-freezing valve of the embodiment comprises a valve body 1 with an accommodating cavity 10, 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 anti-freezing valve further comprises an intermediate switch piece 3 limited on the anti-freezing mechanism 2, when the ambient temperature is lower than the preset temperature, the anti-freezing mechanism 2 can drive the intermediate switch piece 3 to be switched from a state of opening the water inlet 11 to a state of opening the water outlet 13, the water inlet 11, the water outlet 12 and the water outlet 13 are integrated on the valve body 1, the anti-freezing mechanism 2 is arranged, the switching of water inlet and water outlet can be completed even in a power-off state, and the problem of damage of a heat freezing exchanger is avoided.

Specifically, referring to fig. 4, the intermediate switch member 3 includes an intermediate connecting rod 31, a first switch head 32 and a second switch head 33 are respectively disposed at two ends of the intermediate connecting rod 31, the first switch head 32 is disposed in the water inlet channel 111 corresponding to the water inlet 11 and is used for opening and closing the water inlet 11, the second switch head 33 is disposed in the water discharge channel 131 corresponding to the water discharge opening 13 and is used for opening and closing the water discharge opening 13, and the intermediate switch member 3 further includes a first elastic member 4 which enables the intermediate connecting rod 31 to always move towards the direction of the water discharge opening 13 to open the water discharge opening 13. In order to realize that the intermediate switch member 3 is limited by the anti-freezing mechanism 2, the structure can be realized as follows: the middle of the middle connecting rod 31 is hollow, the anti-freezing mechanism 2 comprises a limiting part 21 and a second elastic part 22 which are at least partially arranged in the middle of the middle connecting rod 31, the second elastic part 22 applies a preset force to the limiting part 21 to enable the middle connecting rod 31 to be in a state of opening the water inlet 11, when the external temperature is lower than the preset value of the second elastic part 22, the limiting part 21 can be driven to leave the middle of the middle connecting rod 31, and then the middle connecting rod 31 can move towards the water outlet 13 under the action of the first elastic part 4 to open the water outlet 13. This allows the antifreeze valve to be closed even in the case of power failure by the provision of the second elastic member 22. The second elastic member 22 of the present embodiment is a thermal spring, wherein the elastic force applied by the thermal spring to the limiting member 21 can be reduced along with the decrease of the ambient temperature or the elastic force is not applied to the limiting member 21 when the ambient temperature is lower than the predetermined temperature. As shown in fig. 5, the limiting member 21 of the present embodiment includes a middle limiting head 211 located in the middle of the middle connecting rod 31, a first tail end 212 located in the middle limiting head 211 and facing the water outlet 12, and a second tail end 213 opposite to the first tail end 212, and a mounting seat 14 and a third elastic member 15 are correspondingly disposed at a position of the valve body 1 corresponding to the second tail end 213 for mounting the valve body, and the third elastic member 15 can apply force to the middle limiting head 211 to move toward the water outlet 12. When the outside temperature is lower than the preset value of the second elastic member 22, the middle limiting head 211 is not applied with an elastic force, and the middle limiting head 211 can be driven to leave the middle part of the middle connecting rod 31 under the action of the third elastic member 15, so that the limitation on the middle connecting rod 31 is removed, the middle connecting rod 31 can move towards the water outlet 13 under the action of the first elastic member 4, and finally the water inlet 11 is closed, the water outlet 13 is opened, and freeze-proof drainage is realized. In order to facilitate the connection between the second elastic element 22 and the third elastic element 15, the middle position-limiting head 211 protrudes from the first end 212 and the second end 213, the second elastic element 22 is sleeved on the first end 212, one end of the second elastic element is connected to the water outlet channel 121 corresponding to the water outlet 12, the other end of the second elastic element is connected to the middle position-limiting head 211, the third elastic element 15 is sleeved on the second end 213, one end of the third elastic element is connected to the mounting seat 14, and the other end of the third elastic element is connected to the middle position-limiting head 211. Similarly, in order to facilitate the connection of the first elastic element 4, the middle portion of the middle connecting rod 31 has a connecting portion 310 for the first elastic element 4 to connect, and the connecting portion 310 may be stepped, wherein one end of the first elastic element 4 is connected to the water inlet channel 111 corresponding to the water inlet 11, and the other end is connected to the connecting portion 310, and the first elastic element 4 and the third elastic element 15 are both selected as compression springs. Finally, the present embodiment also provides a water heater (refer to fig. 6) with the above-mentioned antifreeze valve applied thereto, which includes a housing 20, and is characterized in that: the valve body 1 is connected to a water inlet connector 201 of the housing 20. The device is only needed to be additionally arranged on a cold water inlet pipeline of the water heater during installation, other structures of the water heater are not needed to be changed, and the installation and the use are convenient.

In summary, the operation of the antifreeze valve of the present embodiment is as follows:

in a normal state (see fig. 2), the first switch head 32 of the middle connecting rod 31 is in a state of opening the water inlet 11, the second switch head 33 is in a state of closing the water inlet 11, at this time, the second elastic member 22 is in a normal preset force, the third elastic member 15 is in a compressed state, so that the limiting member 21 is located in the middle of the middle connecting rod 31, and the middle connecting rod 31 is limited to move towards the water outlet 13, thereby realizing a water inlet operation;

when frost cracking is prevented in winter (refer to fig. 3), even in the case of power failure, when the external temperature is lower than the preset value of the second elastic member 22, the second elastic member 22 loses the preset force on the limiting member 21, so that the limiting member 21 moves towards the water outlet 12 under the resetting action of the third elastic member 15, the middle connecting rod 31 is released from the limitation of the limiting member 21 and then moves towards the water outlet 13 under the action of the first elastic member 4, thereby opening the water outlet 13, closing the water inlet 11 and realizing water drainage operation;

if the water heater needs to be switched to the normal state, the water heater needs to be plugged again, the middle connecting rod 31 is pushed back to the initial state again, the temperature rises, the second elastic element 22 recovers the preset force, and the middle limiting head 211 of the limiting element 21 is limited again.

Claims

1. An anti-freezing valve comprises a valve body (1) with an accommodating cavity (10), wherein 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: the anti-freezing device also comprises an intermediate switch piece (3) limited on the anti-freezing mechanism (2), and the anti-freezing mechanism (2) can drive the intermediate switch piece (3) to switch from a state of opening the water inlet (11) to a state of opening the water outlet (13) when the ambient temperature is lower than a preset temperature.

2. The antifreeze valve according to claim 1, wherein: intermediate switch spare (3) are including intermediate junction pole (31), the both ends of intermediate junction pole (31) are provided with first switch head (32) and second switch head (33) respectively, first switch head (32) set up in inhalant canal (111) that water inlet (11) correspond, be used for opening and closing water inlet (11), and second switch head (33) set up in drainage channel (131) that outlet (13) correspond, be used for opening and closing outlet (13), still including making intermediate junction pole (31) have all the time to outlet (13) place direction removes in order to open first elastic component (4) of outlet (13) trend.

3. The antifreeze valve according to claim 2, wherein: the middle of the middle connecting rod (31) is hollow, the anti-freezing mechanism (2) comprises a limiting part (21) and a second elastic part (22), at least part of the limiting part (21) is arranged in the middle of the middle connecting rod (31), the second elastic part (22) applies preset force capable of enabling the middle connecting rod (31) to be in a state of opening the water inlet (11) to the limiting part (21), when the external temperature is lower than the preset value of the second elastic part (22), the limiting part (21) can be driven to leave the middle of the middle connecting rod (31), and then the middle connecting rod (31) can move towards the water outlet (13) under the action of the first elastic part (4) to open the water outlet (13).

4. The antifreeze valve according to claim 3, wherein: the second elastic member (22) is a heat-sensitive spring, wherein the elastic force applied by the heat-sensitive spring to the limiting member (21) can be reduced along with the reduction of the ambient temperature or the elastic force is not applied to the limiting member (21) when the ambient temperature is lower than the preset temperature.

5. The antifreeze valve according to claim 4, wherein: locating part (21) including be located middle spacing head (211) at middle part of middle connecting rod (31), be located first tail end (212) towards delivery port (12) in middle spacing head (211) and with first tail end (212) opposite second tail end (213) that sets up, correspondingly valve body (1) corresponds the position of second tail end (213) is provided with mount pad (14) and third elastic component (15) that supply its installation, third elastic component (15) can apply force in middle spacing head (211) removes to delivery port (12) direction.

6. The antifreeze valve according to claim 5, wherein: middle spacing head (211) compare first tail end (212) and second tail end (213) are more outstanding, second elastic component (22) cover is established on first tail end (212), and its one end is connected on delivery port (12) corresponding outlet channel (121), and the other end is then connected on middle spacing head (211), third elastic component (15) are then established second tail end (213), and its one end is connected on mount pad (14), the other end is connected on middle spacing head (211).

7. The antifreeze valve according to any one of claims 2 to 6, wherein: the middle part of middle connecting rod (31) has the confession outward connecting portion (310) that first elastic component (4) are connected, wherein the one end of first elastic component (4) is connected on inhalant canal (111) that water inlet (11) correspond, and the other end is then connected on connecting portion (310).

8. A water heater applying an anti-freezing valve according to any one of claims 1 to 7, comprising a housing (20), characterized in that: the valve body (1) is connected to a water inlet joint (201) of the machine shell (20).