CN216078431U

CN216078431U - Anti-freezing valve and water heater applying same

Info

Publication number: CN216078431U
Application number: CN202121481123.3U
Authority: CN
Inventors: 黄启彬
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, the valve body is provided with a water inlet, a water outlet and a water outlet which are communicated with an accommodating cavity, and the anti-freezing valve is characterized in that: the valve body is provided with a containing cavity, a valve core with a water passage is arranged in the containing cavity in a rotatable manner, and a limiting mechanism arranged on the valve body can enable the valve core to turn from a first position to a second position only under the condition of releasing the limiting function of the limiting mechanism, compared with the prior art, the valve body has the advantages that: the water inlet, the water outlet and the water outlet are integrated on the valve body, the water passing channel and the limiting mechanism which are communicated with the ports are arranged on the valve core, and the switching of water supply and water drainage functions can be realized only by rotating the valve core under the condition of releasing the limiting function of the limiting mechanism.

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 one of the necessary devices in daily life of people and is used for providing safe and comfortable hot water. Common gas water heaters can be classified into forced-ventilated type, flue type and balanced type according to the exhaust mode. In any water heater, when the residual water inside the water heater is solidified under low temperature conditions, the coil pipe inside the water heater is easily frozen and cracked, so that the gas water heater is damaged. Aiming at the problem of frost cracking of low-temperature pipelines, the conventional solutions at present comprise: electric heating method, and manual drainage method. The electric heating method is that a heating resistor is used for heating the coil as the name suggests; but the electric heating has the defects of potential safety hazard on one hand and electric energy consumption on the other hand. The manual drain valve is to be used as a main body for manual drainage in time, so that the accidental water drainage exists, and the user experience and feeling are influenced. In addition, the existing frost valve requires the user to open the water outlet faucet first when performing freeze-proof drainage. However, no good mechanism for preventing misoperation is provided, which easily causes a user to rotate the anti-freezing valve to a drainage gear when the water tap is not opened, and if the static pressure at the rear end of the water heater is too high, a large amount of water flow is rapidly ejected during drainage, so that the user and a cabinet are wetted, and further improvement on the anti-freezing valve is needed.

SUMMERY OF THE UTILITY MODEL

The first technical problem to be solved by the present invention is to provide an antifreeze valve capable of automatically sensing water pressure to prevent a user from operating the antifreeze valve by mistake, in view of the above 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:

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 method is characterized in that: also comprises

The valve core is provided with a water passing channel and can be rotatably arranged in the accommodating cavity, the water passing channel is in fluid communication with the water inlet and the water outlet when the valve core is in a first position, and the water passing channel is in fluid communication with the water outlet and the water outlet when the valve core is in a second position; and

and the limiting mechanism is arranged in the valve body and is matched with the valve core and/or the valve rod, and the valve rod can drive the valve core to rotate from the first position to the second position only under the limiting action of the limiting mechanism.

The limiting mechanism is preferably only matched with the valve rod, wherein the limiting mechanism is limited in a limiting cavity communicated with the accommodating cavity, the limiting mechanism comprises a limiting rod which can stretch and retract relative to the inside and the outside of the limiting cavity, and the valve core can be limited from a first position to a second position when the limiting rod extends out of the limiting cavity and is locked with the valve rod.

Wherein: the water pressure in the containing cavity of the valve body is still high, the limiting rod is still in an extending state, then the knob connected with the valve rod is blocked at the pressure relief block and cannot be continuously screwed to the anti-freezing drainage block, so that a user is reminded to open the pressure relief of the water outlet faucet, the water inlet and the water outlet are both closed at the moment, the water outlet faucet is opened by the user for later use, the water pressure P at the rear end is reduced to about zero, the limiting rod retracts under the action of the reset spring, at the moment, the user can continuously rotate the adjusting knob to the anti-freezing drainage gear, the valve rod drives the valve core to rotate, at the moment, the valve core is connected with the water outlet and the water outlet, the water inlet is closed, and the anti-freezing mode is opened.

When the limiting rod retracts into the limiting cavity, a user can drive the valve rod to rotate, preferably, one end of the valve rod penetrates through the valve body and is connected with the valve core, the other end of the valve rod is located outside the valve body and serves as a driving end, and the valve rod can drive the valve core to rotate from the first position to the second position under the condition that the limiting action of the limiting rod is relieved under the state that the limiting rod and the driving end of the valve rod are locked.

Preferably, a valve rod cover is connected outside the driving end of the valve rod, a first through hole for exposing the driving end of the valve rod is formed in the center of the valve rod cover, the limiting cavity is provided with a second through hole communicated with the accommodating cavity, the valve rod cover is provided with a third through hole communicated with the limiting cavity, the limiting rod comprises a head portion capable of covering the second through hole and a tail portion capable of extending out of the third through hole, and the limiting mechanism further comprises an elastic piece enabling the tail portion of the limiting rod to be retracted into the limiting cavity all the time. When the pressure P at the rear end of the water heater is consistent with the water inlet pressure and is at a higher level, the water pressure pushes the head of the limiting rod through the second through hole, so that the tail of the limiting rod is in a state of extending out of the third through hole, and the limiting rod is used for locking the knob of the valve rod to limit the rotation of the knob.

Furthermore, the elastic part is a compression spring sleeved on the limiting rod, one end of the compression spring is connected to the head part, and the other end of the compression spring is connected to the valve rod cover in the peripheral part of the third through hole, so that the tail part of the limiting rod always has the tendency of retracting to the limiting cavity. When the pressure in the accommodating cavity of the valve body is reduced, the compression spring enables the limiting rod to have the function of retracting to the limiting cavity all the time, so that the limiting function on the valve rod is relieved, and then the valve core is enabled to turn to the second position from the first position.

In order to solve the second technical problem, the utility model further provides a water heater with the anti-freezing valve, and the water heater further comprises a water heater body, wherein 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 utility model has the advantages that: the water inlet, the water outlet and the water outlet are integrated on the valve body, the water passing channel and the limiting mechanism which are communicated with the ports are arranged on the valve core, the switching of water supply and water discharge functions can be realized only by rotating the valve core under the condition of releasing the limiting function of the limiting mechanism, 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 schematic structural view of a frost valve according to an embodiment of the present invention in a normal state;

FIG. 3 is an angled cross-sectional view of the antifreeze valve of the embodiment of the present invention in its normal state;

FIG. 4 is a cross-sectional view at another angle in the normal state of the antifreeze valve of the embodiment of the present invention;

FIG. 5 is a schematic structural diagram illustrating a pressure relief state of a faucet of an embodiment of the antifreeze valve of the present invention;

FIG. 6 is an angled cross-sectional view of a freeze valve according to an embodiment of the present invention in a pressure relief state of a faucet;

FIG. 7 is a cross-sectional view of another angle of the embodiment of the antifreeze valve of the present invention in a state of pressure relief of the faucet;

FIG. 8 is a schematic structural view of a frost valve of an embodiment of the present invention in frost drain of a faucet;

FIG. 9 is a cross-sectional view of the antifreeze valve of the embodiment of the present invention in antifreeze discharge from the faucet;

FIG. 10 is a schematic structural diagram of a water heater with a frost valve 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 10, the preferred embodiment of the present invention is shown. The antifreezing valve of the embodiment comprises a valve body 1, wherein the valve body 1 is internally provided with an accommodating cavity 10, 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, the antifreezing valve further comprises a valve core 2, the valve core 2 is provided with a water passing channel 21 and can be rotatably arranged in the accommodating cavity 10, the water passing channel 21 is in fluid communication with the water inlet 11 and the water outlet 12 when the valve core 2 is at a first position, and the water passing channel 21 is in fluid communication with the water outlet 12 and the water outlet 13 when the valve core 2 is at a second position; and be provided with stop gear 3 in the valve body 1, this stop gear 3 and case 2 and/or valve rod 4 cooperation only under the limiting displacement who removes stop gear 3, just can make valve rod 4 drive case 2 turn to the second position from the primary importance to avoided when water heater rear end static pressure is too big, having had a large amount of rivers to jet out fast during the drainage, and then lead to the phenomenon of wetting user and cupboard to take place.

Specifically, the present embodiment is explained in a manner that the limiting mechanism 3 is only matched with the valve rod 4, wherein the limiting mechanism 3 is limited in the limiting cavity 31 communicated with the accommodating cavity 10, the limiting mechanism 3 comprises a limiting rod 32 which can be extended and retracted relative to the limiting cavity 31, and the valve core 2 can be limited from the first position to the second position when the limiting rod 32 is in a state of extending out of the limiting cavity 31 and locked with the valve rod 4. Wherein: when the water pressure in the accommodating cavity 10 of the valve body 1 is still high, the limiting rod 32 is still in an extending state, the knob 40 is blocked by the pressure relief block and cannot be continuously screwed to the anti-freezing drainage block, so as to remind a user to open the water outlet faucet for pressure relief, at the moment, the water inlet 11 and the drainage port 13 are both closed, the water pressure P at the rear end is reduced to about zero after the user opens the water outlet faucet, the limiting rod 32 retracts under the action of the reset spring, at the moment, the user can continuously rotate the adjusting knob to the anti-freezing drainage gear, the valve rod 4 drives the valve core 2 to rotate, at the moment, the valve core 2 is communicated with the water outlet 12 and the drainage port 13, the water inlet 11 is closed, and the anti-freezing mode is opened. The valve body 1 is also internally provided with a valve rod 4 capable of driving the valve core 2 to rotate, one end of the valve rod 4 penetrates through the valve body 1 and is connected with the valve core 2, the other end of the valve rod 4 is positioned outside the valve body 1 and serves as a driving end 41, and the valve rod 4 can drive the valve core 2 to rotate from the first position to the second position under the condition that the limiting action of the limiting rod 32 is released under the condition that the limiting rod 32 is locked with the driving end 41 of the valve rod 4. The driving end 41 of the valve rod 4 is externally connected with a valve rod cover 42, the center of the valve rod cover 42 is provided with a first through hole 421 for exposing the driving end 41 of the valve rod 4, the limiting cavity 31 is provided with a second through hole 311 communicated with the accommodating cavity 10, the valve rod cover 42 is provided with a third through hole 422 communicated with the limiting cavity 31, the limiting rod 32 comprises a head 321 capable of covering the second through hole 311 and a tail 322 capable of extending out of the third through hole 422, the limiting mechanism 3 further comprises an elastic element 323 capable of enabling the tail 322 of the limiting rod 32 to be retracted into the limiting cavity 31 all the time, when the pressure P at the rear end of the water heater is consistent with the water inlet pressure and is at a higher level, the water pressure pushes the head 321 of the limiting rod 32 through the second through hole 311, so that the tail 322 of the limiting rod 32 is in a state of extending out of the third through hole 422, thereby utilizing the limiting rod 32 to lock the knob 40 of the valve rod 4 and limit the rotation of the knob 40. Preferably, the elastic element 323 is a compression spring 5 sleeved on the limiting rod 32, one end of the compression spring 5 is connected to the head portion 321, and the other end is connected to the valve rod cover 42 in the peripheral portion of the third through hole 422, so that the tail portion 322 of the limiting rod 32 always has a tendency to retract to the limiting cavity 31. When the pressure in the accommodating cavity 10 of the valve body 1 is reduced, the compression spring enables the limiting rod 32 to have the function of retracting to the limiting cavity 31 all the time, so that the limiting function on the valve rod 4 is relieved, and then the valve core 2 is enabled to rotate to the second position from the first position. Finally, the present embodiment also provides a water heater (as shown in fig. 10) using the anti-freezing valve, further comprising a water heater body 6, wherein the water outlet 12 of the valve body 1 is in fluid communication with the water inlet end of the water heater body 6. During installation, the device is only needed to be additionally arranged on the water inlet end of the water heater, other structures of the water heater are not needed to be changed, and the installation and the use are convenient.

In summary, the waterway path of the antifreeze valve in the water inlet and water discharge states is as follows:

when the temperature is normal (as shown in fig. 2-4), at the moment, anti-freezing is not needed, a user rotates an adjusting knob to a normal working gear, a valve rod 4 drives a valve core 2 to rotate, the valve core 2 is communicated with a water outlet 12 and a water inlet 11, a water outlet 13 is closed, and the anti-freezing mode is closed; as shown in fig. 4, at this time, the pressure P at the rear end of the water heater is consistent with the water inlet pressure and is at a higher level, and the water pressure pushes the limiting rod 32 to enable the limiting rod to be in an extending state;

when the air temperature is too low (as shown in fig. 2 and 5), freezing prevention is needed, as shown in fig. 7, a user rotates an adjusting knob, if the water pressure at the rear end is still high, and the limiting rod 32 is still in an extending state, the knob is blocked at a pressure relief block and cannot be continuously screwed to a freezing prevention drainage block, so as to remind the user to open a water outlet faucet for pressure relief, at the moment, a water inlet 11 and a water outlet 13 are both closed, the water outlet faucet is opened by the user to cause the water pressure P at the rear end to be reduced to about zero, the limiting rod 32 retracts under the action of a return spring (as shown in fig. 6 and 7), at the moment, the user can continuously rotate the adjusting knob to a freezing prevention drainage gear, the valve rod 4 drives the valve core 2 to rotate, the valve core 2 is communicated with the water outlet 12 and the water outlet 13, the water inlet 11 is closed (as shown in fig. 8 and 9), and a freezing prevention mode is opened.

Claims

1. An antifreeze valve comprising:

the water-saving 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: also comprises

The valve core (2), the said valve core (2) has water channel (21), and can locate in the above-mentioned holding chamber (10) rotatably, in the state that the valve core (2) is in the first position, the said water channel (21) and water inlet (11) and water outlet (12) are in fluid communication, in the state that the valve core (2) is in the second position, the said water channel (21) and water outlet (12) and drainage outlet (13) are in fluid communication; and

and the limiting mechanism (3) is arranged in the valve body (1) and is matched with the valve core (2) and/or the valve rod (4), and the valve rod (4) can drive the valve core (2) to rotate from the first position to the second position only under the limiting action of releasing the limiting mechanism (3).

2. The antifreeze valve according to claim 1, wherein: the limiting mechanism (3) is only matched with the valve rod (4), wherein the limiting mechanism (3) is limited in a limiting cavity (31) communicated with the accommodating cavity (10), the limiting mechanism (3) comprises a limiting rod (32) which can stretch out and draw back relative to the limiting cavity (31), and the valve core (2) can be limited from a first position to a second position when the limiting rod (32) extends out of the limiting cavity (31) and is locked with the valve rod (4).

3. The antifreeze valve according to claim 2, wherein: one end of the valve rod (4) penetrates through the valve body (1) to be connected with the valve core (2), the other end of the valve rod (4) is located outside the valve body (1) and serves as a driving end (41), and the valve rod (4) can drive the valve core (2) to rotate from a first position to a second position under the condition that the limiting rod (32) is locked with the driving end (41) of the valve rod (4) under the condition that the limiting effect of the limiting rod (32) is relieved.

4. The antifreeze valve according to claim 3, wherein: the valve rod cover (42) is connected to the outside of the driving end (41) of the valve rod (4), a first through hole (421) for exposing the driving end (41) of the valve rod (4) is formed in the center of the valve rod cover (42), the limiting cavity (31) is provided with a second through hole (311) communicated with the accommodating cavity (10), the valve rod cover (42) is provided with a third through hole (422) communicated with the limiting cavity (31), the limiting rod (32) comprises a head portion (321) capable of covering the second through hole (311) and a tail portion (322) capable of extending out of the third through hole (422), and the limiting mechanism (3) further comprises an elastic piece (323) enabling the tail portion (322) of the limiting rod (32) to be retracted into the limiting cavity (31) all the time.

5. The antifreeze valve according to claim 4, wherein: the elastic piece (323) is a compression spring (5) sleeved on the limiting rod (32), one end of the compression spring (5) is connected to the head portion (321) while the other end is connected to the valve rod cover (42) in the peripheral portion of the third through hole, so that the tail portion of the limiting rod (32) always tends to retract to the limiting cavity (31).

6. A water heater applying the anti-freezing valve as claimed in any one of claims 1 to 5, further comprising a water heater body (6), wherein the water outlet (12) of the valve body (1) is in fluid communication with the water inlet end of the water heater body (6).