CN209399561U - Water heater and frost valve - Google Patents

Abstract

The application discloses a kind of water heater, comprising: for storing the container of water；Water inlet pipe, the outlet pipe being connected with the container；The antifreeze mechanism being set on the water inlet pipe；The antifreeze mechanism has the normal condition for allowing the water flowing in the water inlet pipe to pass through and blocks off state of the water inlet pipe to the container water delivery；The antifreeze mechanism switches to the off state from the normal condition under the driving of pressure inside it when environment temperature is lower than the first predetermined temperature.Water heater and frost valve provided by the present application can prevent heat exchanger from freeze damage occurs in the case where water heater powers off, while the case where avoid user house from being steeped.

Description

Water heater and frost valve

Technical field

This application involves field of water heaters more particularly to a kind of water heaters and frost valve.

Background technique

To avoid water heater freezing, existing water heater usually has antifreeze function.Existing antifreeze function is added using electricity Heat is antifreeze and igniting is antifreeze, and the water freezing in water heater is avoided to expand.Regardless of being that electrical heating antifreezing or igniting are antifreeze Need power supply.

But due to the consumption habit problem of different user, water heater or long period are being finished without gas and hot water The power supply of water heater can be closed in the case where device, or the natural gas valve of gas heater is closed, this results in hot water The existing antifreeze function of device can not work, thus the problem for causing the water tank of water heater freezing.

Since water heater is constantly connected to tap water inlet pipe road, if when user stays out water heater be damaged by frost it will cause The case where user family is steeped forms biggish loss.Especially in the Yangtze river basin of not Central Heating Providing, there is subzero weather When often there is a large amount of water heater and be damaged by frost, cause biggish loss, very influence user experience.

Utility model content

In view of the deficiencies in the prior art, the purpose of the application is to provide a kind of water heater and frost valve, with can be in hot water The case where device avoids user house from being steeped in the case where powering off.

The technical solution of the application is as follows:

A kind of water heater, comprising:

For storing the container of water；

Water inlet pipe, the outlet pipe being connected with the container；

The antifreeze mechanism being set on the water inlet pipe；The antifreeze mechanism has the water flowing allowed in the water inlet pipe The normal condition of process and block off state of the water inlet pipe to the container water delivery；The antifreeze mechanism is in environment The off state is switched to from the normal condition under the driving of pressure inside it when temperature is lower than the first predetermined temperature.

As a preferred embodiment, the antifreeze mechanism, which is equipped with, can be located at the default of the normal condition Power, the pre set force are steady state value, and the antifreeze mechanism is higher than the pre set force Shi Qi in the antifreeze mechanism internal pressure The off state is switched to from the normal condition under the driving of internal pressure.

As a preferred embodiment, the antifreeze mechanism, which is equipped with, can be located at the default of the normal condition Power；The pre set force decreases below the antifreeze mechanism internal pressure when environment temperature is lower than the first predetermined temperature, so that The antifreeze mechanism switches to the off state from the normal condition under the driving of pressure inside it.

As a preferred embodiment, the antifreeze mechanism can also be incited somebody to action when environment temperature is lower than the first predetermined temperature Water in at least partly described container is discharged from the container.

As a preferred embodiment, the antifreeze mechanism includes closed component and aerial drainage component；

When the antifreeze mechanism is located at normal condition, the closed component opens its inner flow passage, and the aerial drainage Component is connected to the downstream of the closed component；

When the antifreeze mechanism is located at off state, the closed component closes its inner flow passage, and the aerial drainage Component is communicated with the atmosphere, and the water in the container is discharged.

As a preferred embodiment, when the antifreeze mechanism is located at off state, the closed component and institute Aerial drainage component is stated mutually to separate.

As a preferred embodiment, the closed component and the aerial drainage component can be along the length of the water inlet pipe Direction relative motion, so that the antifreeze mechanism switches to off state from normal condition.

As a preferred embodiment, the closed component, which has shell and can close, opens the shell The spool of inner flow passage；

The aerial drainage component includes leak-off pipe；The leak-off pipe has relative to the shell is extending at least partially into the shell Internal portion simultaneously makes the spool open the first position of the runner and be communicated with the atmosphere and the spool is made to close the stream The second position in road.

As a preferred embodiment, the leak-off pipe is switched to from the first position relative to the shell When the second position with the valve spool.

As a preferred embodiment, the shell can be relative to the leak-off pipe edge and the water inlet in-pipe flow Stream moves in the opposite direction, so that the leak-off pipe switches to the second position from first position.

As a preferred embodiment, the shell has the connecting pin and open end for connecting the water inlet pipe； The leak-off pipe can protrude into the shell from the open end；The outer wall of the leak-off pipe is equipped with card slot；

The shell is equipped with the shackle member that can be moved radially；The antifreeze mechanism is located at clamping when normal condition Part protrudes into the card slot so that the leak-off pipe is located at the first position；

The antifreeze mechanism internal pressure be higher than the pre set force when, the leak-off pipe make the shackle member radially to It is moved out the card slot outside, and then the shell is moved along the direction opposite with flow direction in the water inlet pipe.

As a preferred embodiment, being additionally provided with resetting structure on the shell；The resetting structure can be to described Shackle member applies the pre set force radially inward.

Lead to as a preferred embodiment, the wall of the shell is equipped with for what the shackle member passed radially through Hole；

The resetting structure includes: the outer tube and spring being sheathed on outside shell；The outer wall of the shell is equipped with contact Step；The spring is between the outer tube and the contact step；The spring applies to the outer tube along the flow direction Elastic force；The inner wall of the outer tube is equipped with the first inclined-plane；First inclined-plane applies the pre set force to the shackle member.

As a preferred embodiment, the shackle member is spherical structure.

As a preferred embodiment, the diameter of the through-hole is less than the diameter of the spherical structure.

As a preferred embodiment, the card slot has the second inclined-plane matched with the shackle member；It is described Second inclined-plane is flowed to along described towards the leak-off pipe inner inclination.

As a preferred embodiment, the spring is the first temperature sensing spring or material is spring steel；Wherein, institute The elastic force that the outer tube applies can be reduced or in environment temperature with the reduction of environment temperature by stating the first temperature sensing spring Elastic force is not applied to the outer tube when lower than the first predetermined temperature.

As a preferred embodiment, the shell is equipped with sealing element in the upstream of the shackle member；The sealing Part between the leak-off pipe and the shell for will seal；The shell is equipped with sealing surface in the upstream of the sealing element；Institute The enclosure interior runner is closed when stating spool and the sealing face contact.

As a preferred embodiment, being additionally provided with the locating part positioned at the outer tube downstream on the shell；It is described Outer tube contacted with the locating part be limited can not continue along it is described flow direction move.

As a preferred embodiment, the leak-off pipe was equipped with wet part close to one end of the spool；It is described Wet part is crossed equipped at least one water hole；

The elastic component for keeping the spool mobile to the sealing surface is additionally provided in the shell；The spool is towards the mistake One end of wet part is additionally provided with contact bar；The valve is pushed by the contact bar when leak-off pipe is located at the first position Core opens the intracorporal runner of the shell.

As a preferred embodiment, the water inlet pipe includes first part and second part；The first part It is connected between the water supply connector of the water heater and the shell；The second part is connected to the container and the aerial drainage Between pipe.

As a preferred embodiment, being equipped with movable component between the first part and the water supply connector；Institute Stating movable component allows the first part to move along the length direction of the water inlet pipe.

As a preferred embodiment, the movable component includes the company with the first hinged end and the second hinged end Adapter tube；The connecting tube is hinged by the first hinged end and the first part；The connecting tube passes through the second hinged end and institute It is hinged to state water supply connector.

As a preferred embodiment, the container includes heat exchanger.

As a preferred embodiment, the pre set force is lower than the minimum pressure voltage of the heat exchanger.

As a preferred embodiment, being additionally provided with relief valve on the outlet pipe；The relief valve can be in environment Temperature is opened when being lower than the second predetermined temperature；Second predetermined temperature is lower than first predetermined temperature.

As a preferred embodiment, the relief valve includes valve body, is set to the intracorporal closeouts of the valve；Institute State the second temperature sensing spring for being additionally provided in valve body and applying elastic force to the closeouts；Second temperature sensing spring can be in environment temperature The closeouts are driven to open the relief valve by deformation when degree is lower than the second predetermined temperature.

As a preferred embodiment, the water heater includes gas heater or wall-hung boiler.

A kind of frost valve, the frost valve have normal condition and off state；The frost valve can pressure inside it Driving under from the normal condition switch to the off state；

Wherein, the frost valve has closed component and aerial drainage component；

When the frost valve is located at normal condition, the closed component opens its inner flow passage, and the aerial drainage group Part is connected to the downstream of the closed component；

When the frost valve is located at off state, the closed component closes its inner flow passage.

As a preferred embodiment, the closed component, which has shell and can close, opens the shell The spool of inner flow passage；The aerial drainage component includes leak-off pipe；The leak-off pipe has relative to the shell at least partly to be stretched Enter the enclosure interior and the spool is made to open the first position of the runner and be detached from the shell and make the spool Turn off the second position of the runner；Wherein,

The shell has connecting pin and open end；The leak-off pipe can protrude into the shell from the open end； The outer wall of the leak-off pipe is equipped with card slot；

The shell is equipped with the shackle member that can be moved radially；The frost valve is located at shackle member when normal condition It protrudes into the card slot so that the leak-off pipe is located at the first position；

When the frost valve switches to the off state from the normal condition, the internal pressure of the frost valve is driven Moving the leak-off pipe makes the shackle member be moved radially outwards the disengaging card slot, and then the shell and the leak-off pipe produce Raw relative movement.

Lead to as a preferred embodiment, the wall of the shell is equipped with for what the shackle member passed radially through Hole；Resetting structure is additionally provided on the shell；

The resetting structure includes: the outer tube and spring being sheathed on outside shell；The outer wall of the shell is equipped with contact Step；The spring is between the outer tube and the contact step；The spring applies to the outer tube along described antifreeze The elastic force of valve internal liquid flow direction；The inner wall of the outer tube is equipped with the first inclined-plane；First inclined-plane is to the shackle member Apply pre set force radially inward.

As a preferred embodiment, the shackle member is spherical structure；The diameter of the through-hole is less than the ball The diameter of shape structure.

The utility model has the advantages that

Antifreeze mechanism is arranged in water heater provided herein on water inlet pipe, is lower than by antifreeze mechanism in environment temperature The off state is switched to from the normal condition when the first predetermined temperature, thus at low ambient temperatures cut off water inlet, and And the antifreeze mechanism can switch to the off state from the normal condition under the driving of internal pressure, be not necessarily to electric power Supply, can switch to off state under gas-fired water heater power blackout situation.Therefore, water heater provided by present embodiment The case where user house capable of being avoided to be steeped in the case where water heater powers off.

The antifreeze mechanism of water heater provided herein can also will at least when environment temperature is lower than the first predetermined temperature The heat exchanger is discharged in water in the heat exchanger of part, to avoid heat exchanger that freeze damage occurs.

Referring to following description and accompanying drawings, the particular implementation of the utility model is disclosed in detail, specifies practical Novel principle can be in a manner of adopted.It should be understood that the embodiments of the present invention in range not thus by Limitation.In the range of the spirit and terms of appended claims, the embodiments of the present invention includes many changes, modifications With it is equivalent.

The feature for describing and/or showing for a kind of embodiment can be in a manner of same or similar one or more It uses in a other embodiment, is combined with the feature in other embodiment, or the feature in substitution other embodiment.

It should be emphasized that term "comprises/comprising" refers to the presence of feature, one integral piece, step or component when using herein, but simultaneously It is not excluded for the presence or additional of one or more other features, one integral piece, step or component.

Detailed description of the invention

In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is only It is some embodiments of the utility model, for those skilled in the art, without any creative labor, It is also possible to obtain other drawings based on these drawings.

Fig. 1 is the gas-fired water heater structural schematic diagram that a kind of embodiment of the application provides；

Fig. 2 is cross-sectional view at the A-A of Fig. 1；

Fig. 3 is the antifreeze mechanism structural schematic diagram of Fig. 2；

Fig. 4 is the sectional view of Fig. 3 in normal state；

Fig. 5 is the sectional view of Fig. 3 in the off case；

Fig. 6 is the water inlet pipe and movable component rough schematic view of Fig. 2；

Fig. 7 is the pressure-relief valve structure schematic diagram that a kind of embodiment of the application provides.

Specific embodiment

In order to make those skilled in the art more fully understand the technical solution in the utility model, below in conjunction with this reality With the attached drawing in new embodiment, the technical scheme in the utility model embodiment is clearly and completely described, it is clear that The described embodiments are only a part of the embodiments of the utility model, instead of all the embodiments.Based on the utility model In embodiment, those of ordinary skill in the art's every other implementation obtained without making creative work The range of the utility model protection all should belong in example.

It should be noted that it can directly on the other element when element is referred to as " being set to " another element Or there may also be another elements placed in the middle.When an element is considered as " connection " another element, it be can be directly It is connected to another element in succession or may be simultaneously present another element placed in the middle.Term as used herein " vertically ", " water It is flat ", "left", "right" and similar statement for illustrative purposes only, be not meant to be the only embodiment.

Unless otherwise defined, all technical and scientific terms used herein are led with the technology for belonging to the utility model The normally understood meaning of the technical staff in domain is identical.Terminology used in the description of the utility model herein only be The purpose of description specific embodiment, it is not intended that in limitation the utility model.Term as used herein "and/or" packet Include any and all combinations of one or more related listed items.

Fig. 1 is please referred to Fig. 6.A kind of gas-fired water heater is provided in the application embodiment, comprising: heat exchanger 100； Water inlet pipe 200, the outlet pipe 400 being connected with the heat exchanger 100.The combustion gas water heating apparatus may include gas and hot water Device or wall-hung boiler.

In the present embodiment, the gas-fired water heater further includes the antifreeze mechanism being set on the water inlet pipe 200 300.The antifreeze mechanism 300 has described in the normal condition for allowing the water flowing in the water inlet pipe 200 to pass through and blocking Off state of the water inlet pipe 200 to 100 water delivery of heat exchanger.The antifreeze mechanism 300 is pre- lower than first in environment temperature The off state is switched to from the normal condition under the driving of pressure inside it when determining temperature.

Antifreeze mechanism 300 is arranged in gas-fired water heater provided by present embodiment on water inlet pipe 200, passes through antifreeze machine Structure 300 switches to the off state from the normal condition when environment temperature is lower than the first predetermined temperature, thus in low temperature Water inlet is cut off under environment, also, the antifreeze mechanism 300 can switch under the driving of internal pressure from the normal condition The off state is not necessarily to power supply, can switch to off state under gas-fired water heater power blackout situation.Therefore, originally Gas-fired water heater provided by embodiment can avoid leading since heat exchanger is damaged by frost in the case where water heater powers off It applies family man the case where being steeped.

Antifreeze mechanism 300 in present embodiment is that purely mechanic movement structure is not necessarily to by the pressure-driven of therein Electric energy supply has very high application value so as to use in the power-off state.

For the off state for avoiding the false triggering antifreeze mechanism 300, the first predetermined temperature can take at 5 degrees Celsius or less Value.For different embodiments, the first predetermined temperature of the antifreeze mechanism 300 be can also be different.For example, in the embodiment having In, the first predetermined temperature can be higher than 0 degree Celsius, and in the embodiment having, the first predetermined temperature can be at 0 degree Celsius or less (including 0 degree Celsius).

In the application embodiment, antifreeze mechanism 300 is influenced by ambient temperature, to switch to shutdown shape from normal condition State reaches antifreezing effect.300 place environment temperature of antifreeze mechanism can be 300 position of antifreeze mechanism or the temperature of surrounding. For example, 300 place environment temperature of antifreeze mechanism can be room temperature, it is contemplated that not have sexual intercourse when antifreeze mechanism 300 is located at indoor Between temperature there may be temperature difference, 300 place environment temperature of antifreeze mechanism can be the environment near antifreeze mechanism 300 Temperature.

In view of when freezing, volume can expand water, expansion rear heat exchange internal pressure increases, correspondingly, antifreeze mechanism Pressure inside 300 increases, and antifreeze mechanism 300 switches to off state under the driving of the pressure.Wherein, antifreeze mechanism 300 It can be connected on water inlet pipe 200.Certainly, antifreeze mechanism 300 can also be set to one end of water inlet pipe 200, to be connected on Between heat exchanger 100 and water inlet pipe 200.As a preferred option, in order to reach better antifreeze and protecting effect, antifreeze machine Structure 300 is connected on water inlet pipe 200.

Specifically as shown in Fig. 2, Fig. 6.The water inlet pipe 200 includes first part 201 and second part 202.Described A part 201 is connected between the water supply connector 700 of the gas-fired water heater and the antifreeze mechanism 300.Water supply connector 700 It can be installed in the shell 600 of gas-fired water heater.The second part 202 is connected to the heat exchanger 100 and described Between antifreeze mechanism 300.Wherein, first part 201 is connected to the upstream of antifreeze mechanism 300, and second part 202 is connected to antifreeze The downstream of mechanism 300.

Switch to the second state from normal condition for convenience of antifreeze mechanism 300, first part 201 and second part 202 it One permission activity.Preferably, being equipped with movable component 800 between the first part 201 and the water supply connector 700.The work Dynamic component 800 allows the first part 201 to move along the length direction of the water inlet pipe 200.

Specifically, refering to shown in Fig. 2, Fig. 6.The movable component 800 includes having the first hinged end 802 and second hinged The connecting tube 801 at end 803.The connecting tube 801 is hinged by the first hinged end 802 and the first part 201.The connection Pipe 801 is hinged by the second hinged end 803 and the water supply connector 700.

In antifreeze mechanism 300 from the action process that normal condition switches to off state, first part 201 is moved down And connecting tube 801 is driven to rotate by the first hinged end 802.Correspondingly, connecting tube 801 is rotated around the second hinged end 803, such as This realizes that first part 201 moves down, so that the component relative motion of antifreeze mechanism 300.

In the present embodiment, antifreeze mechanism 300 can switch to off state from normal condition.The application is not intended to limit Whether antifreeze mechanism 300 can switch to normal condition from off state.It is antifreeze for the recycling convenient for antifreeze mechanism 300 Mechanism 300 can also switch to normal condition from off state.Wherein, antifreeze mechanism 300 can by itself resetting-mechanism from It is dynamic to be reset to normal condition, normal condition can also be switched to from off state by way of man-made assembly.

As shown in Figure 4, Figure 5.Inside antifreeze mechanism 300 have for by water inlet pipe 200 water pass through runner (1a, 2a).In normal state, the runner inside antifreeze mechanism 300 is connected state, and the water in water inlet pipe 200 can pass through at this time The runner enters in heat exchanger 100.In the off case, the runner of antifreeze mechanism 300 is blocked, correspondingly, water inlet pipe 200 In water can not by supplying water in 300 heat exchanger 100 of antifreeze mechanism, thus even if heat exchanger 100 because temperature reduce due to Cracking also only only flows out internal a small amount of water, and is unlikely to form larger impact to the family of user.

As shown in Figure 1 and Figure 2.Heat exchanger tube has can be set in heat exchanger 100, by being formed in heat exchanger tube and combustion chamber 500 High-temperature flue gas heat exchange to by heat exchanger tube water heat.Heat exchanger 100 (water tank) and heat exchanger tube can be installed on combustion In the shell 600 of gas hot water apparatus.Water inlet pipe 200 can input cold water with heat exchanger 100.

It, can be with using water supply connector 700 specifically, water inlet pipe 200 can connect the water supply connector 700 of gas-fired water heater It is connected with the pipeline of registering one's residence (water supply pipe) of user.Water inlet pipe 200 is connected with water supply pipe, thus in normal temperature state Pressure under (such as 5 degrees Celsius or more) in water inlet pipe 200 is identical as the hydraulic pressure in running water pipe.Outlet pipe 400 can will be warm Water in exchanger 100 exports outward.Wherein, outlet pipe 400 can connect the water outlet connector of gas-fired water heater, utilize water outlet Fittings are with water end (W.E.) (such as shower, tap).

Unique limit is not made to the first predetermined temperature in this application.Such as: in one embodiment, the first predetermined temperature Degree can be 0 degree Celsius (0 DEG C).In this embodiment, the environment temperature of the antifreeze mechanism 300 lower than 0 degree (0 degree Celsius Referred to as) hereinafter, the water in heat exchanger 100 starts to freeze.Due to that can not drain outward, thus inside with heat exchanger 100 Volume expansion, so that 100 internal pressure of heat exchanger increases.Since water inlet pipe 200 is connected with heat exchanger 100, thus into Pressure in water pipe 200 equally will increase.There is the runner (1a, 2a) being connected with water inlet pipe 200 inside antifreeze mechanism 300. In this state, the internal pressure of antifreeze mechanism 300 equally will increase, from institute under the driving of 300 its internal pressure of antifreeze mechanism It states normal condition and switches to the off state.

In the present embodiment, the antifreeze mechanism 300 is equipped with the pre set force that can be located at the normal condition.Utilize this Pre set force can make antifreeze mechanism 300 be maintained at normal condition.Antifreeze mechanism 300 is when switching to off state from normal condition The pre set force is overcome to act.The pre set force can be steady state value, and the antifreeze mechanism 300 is in the antifreeze mechanism 300 The off state is switched to from the normal condition under the driving of pressure inside it when portion's pressure is higher than the pre set force.

In this embodiment, when environment temperature is lower than the first predetermined temperature, heat exchanger 100 and water inlet pipe 200 or go out Fluid expansion in water pipe 400 (in view of heat exchanger 100 is main Water-storage machine structure, based on 100 inside of heat exchanger) will Internal pressure is promoted, until the pressure inside antifreeze mechanism 300 is higher than pre set force.

In the present embodiment, pre set force is invariant with temperature, or vary with temperature it is faint, to show as constant Value.It is thus desirable to which the pressure inside antifreeze mechanism 300 increases until being more than pre set force.In the embodiment, 300 quilt of antifreeze mechanism When triggering switches to off state, there are freezing and expansion phenomenons inside heat exchanger 100, so as to cause internal pressure increase, phase It answers, the first predetermined temperature can be 0 degree Celsius.

In another embodiment, it is not required that the internal pressure of antifreeze mechanism 300 increases.In this embodiment, first is pre- Determining temperature can be 5 degrees Celsius, to reduce the probability of false triggering, while guarantee antifreezing effect.Wherein, where antifreeze mechanism 300 When environment temperature is lower than 5 degree or less, such as environment temperature, between 0-5 degree, antifreeze mechanism 300 is located at normal condition Pre set force (being referred to as pretightning force) reduces, and is decreased to less than 300 internal pressure of antifreeze mechanism (internal pressure can be with Constant or slightly increase, which is not required for), correspondingly, under the driving of 300 its internal pressure of antifreeze mechanism from it is described just Normal state switches to the off state, thus the shutdown water inlet of antifreeze mechanism 300.

In the present embodiment, the antifreeze mechanism 300 is equipped with the pre set force that can be located at the normal condition.It is described pre- If power decreases below 300 internal pressure of antifreeze mechanism when environment temperature is lower than the first predetermined temperature, so that described anti- Freeze mechanism 300 and switches to the off state from the normal condition under the driving of pressure inside it.

In this embodiment, pre set force can vary with temperature, and when temperature reduces, pre set force is reduced.Certainly, pre set force It can be consecutive variations, namely as temperature change constantly changes, alternatively, pre set force can be discontinuously variation, for example, at some Temperature spot pre set force reduces suddenly, and can remain unchanged in the above pre set force of the temperature spot.Certainly, the application is not to default How power, which varies with temperature, imposes any restrictions.

In this embodiment, antifreeze mechanism 300 is triggered when switching to off state, can be simultaneously inside heat exchanger 100 There is no freezing and expansion phenomenons, only need environment temperature to reach first predetermined following.Antifreeze mechanism is real by reducing pre set force Existing internal pressure driving antifreeze mechanism 300, which is triggered, to be acted to off state.Correspondingly, to avoid false triggering antifreeze mechanism 300, Guarantee user normal use, the first predetermined temperature can between 0 to 5 degree Celsius value.

Schematic quality is exemplified as: pre set force can be provided by spring 6, be temperature sensing spring (memory spring) in spring 6 When, losing elasticity with the coefficient of elasticity reduction of the reduction temperature sensing spring of temperature or under the first predetermined temperature, (coefficient of elasticity is returned Zero), so that pre set force provided by temperature sensing spring 6 changes.At this point, normal hydraulic pressure of the antifreeze mechanism 300 inside drives It can switch to off state under dynamic.

In addition, the common spring is not sent out with the change of temperature when spring 6 is the common spring of common spring steel material The change of raw coefficient of elasticity, so that the pre set force that spring 6 provides is kept constant.At this point, antifreeze mechanism 300 is needed by internal water Freezing and expansion promotes internal pressure to pre set force is higher than, and is then switched to off state.

It should be noted that avoiding heat exchanger 100 broken during internal pressure increases for protection heat exchanger 100 It splits, the pre set force is lower than the minimum pressure voltage of the heat exchanger 100.It so can be by antifreeze mechanism when reaching pre set force 300 drivings switch to off state, are not up to the minimum pressure voltage of heat exchanger 100, guarantee that heat exchanger 100 is not broken It is bad.

Cause the water freezing expansion in heat exchanger 100 that heat exchanger 100 is made to crack to avoid reducing because of temperature, influences to fire The normal use of gas hot water apparatus.In a preferred embodiment, the antifreeze mechanism 300 is in environment temperature lower than the first predetermined temperature The heat exchanger 100 can also be discharged in the water in at least partly described heat exchanger 100 when spending.The antifreeze mechanism 300 can be with By a part discharge in heat exchanger 100, whole water in heat exchanger 100 can also be discharged, to alleviate because of water freezing Internal pressure caused by expanding increases, and reduces heat exchanger 100 because of the probability for the cracking that freezes.

In this embodiment, antifreeze mechanism 300 is when environment temperature is lower than the first predetermined temperature, in the same of shutdown that will intake When by the part water in heat exchanger 100.When the water inside heat exchanger 100 is discharged in antifreeze mechanism 300, due to antifreeze mechanism 300 turn off the water inlet of water inlet pipe 200, so that water inlet pipe 200 can not continue to supply water in heat exchanger 100.

In this embodiment, the water of discharge can be emitted into designated position (such as in a container) by antifreeze mechanism 300, Exhaust position can not be limited after the outflow of antifreeze mechanism 300.Since the water in heat exchanger 100 is less, it is contemplated that set The simplicity set, the water being discharged when being located at off state with antifreeze mechanism 300 are directly excellent to 300 outside drain of antifreeze mechanism The scheme of choosing.

Specifically, the antifreeze mechanism 300 includes closed component and aerial drainage component.The antifreeze mechanism 300 is located at normal When state, the closed component opens its inner flow passage 1a, and the aerial drainage component is connected under the closed component Trip.When the antifreeze mechanism 300 is located at off state, the closed component closes its inner flow passage 1a, and the aerial drainage Component is communicated with the atmosphere, and the water in the heat exchanger 100 is discharged.

When the antifreeze mechanism 300 is located at off state, the closed component is mutually separated with the aerial drainage component.At it In his embodiment, closed component and aerial drainage component can not separated, and only need aerial drainage component that water in heat exchanger 100 can be discharged ?.Suitability quality is exemplified as, aerial drainage component when the antifreeze mechanism 300 of structure that can be shown in Fig. 5 is located at off state Assembled state (suspension status) is still kept with closed component, but the sealing of aerial drainage component has been destroyed, thus big with the external world Gas connection, it is externally drained to antifreeze mechanism 300.Certainly in the embodiment having, by the effect of gravity or as inside is pressed The increase of power, closed component and aerial drainage component can release suspension status, and the two, which is realized, to be detached from.

In the application embodiment, the closed component and the aerial drainage component can be along the length of the water inlet pipe 200 Direction relative motion, so that the antifreeze mechanism 300 switches to off state from normal condition.Wherein, closed component can phase Aerial drainage component is acted, that is, aerial drainage component is fixed, closed component movement；Alternatively, aerial drainage component can be relative to envelope Component movement is closed, that is, closed component is fixed, the movement of aerial drainage component.

Certainly, closed component and the heterodromous scheme of aerial drainage component is not precluded in the application, and closed component is far from aerial drainage Component movement, aerial drainage component are moved far from closed component, and the two can be acted.As it can be seen that being sealed in the application embodiment Relative motion need to only be generated by closing component and aerial drainage component, it is not limited to closed component or the movement of aerial drainage component.Wherein, Fixed with one of closed component and aerial drainage component in the application embodiment, another mode that can be acted is preferred side Case, so convenient for setting and manufacture.

In addition, closed component and aerial drainage component are not precluded in the application embodiment by other direction of relative movement, Because the pressure in antifreeze mechanism 300 can be considered as static pressure, so that it can provide the driving force of any direction.In antifreeze machine Under 300 internal pressure of structure, closing combination and the direction of relative movement that aerial drainage component can produce desirably can flexibly be set.

As shown in Figure 4, Figure 5.The closed component, which has shell 1 and can close, opens 1 inner flow passage of shell Spool 3.The aerial drainage component includes leak-off pipe 2.The leak-off pipe 2 is by having at least portion relative to the shell 1 movement Divide and protrudes into 1 inside of shell and the spool 3 is made to open the first position of the runner and be communicated with the atmosphere and make described Spool 3 closes the second position of the runner.

Leak-off pipe 2 can be structure as a whole with water inlet pipe 200, and one end of water inlet pipe 200 is configured to protrude into shell 1 In.In an embodiment as illustrated in figure 2, leak-off pipe 2 is fixedly connected on the second part 202 of water inlet pipe 200 far from heat exchanger 100 one end.In normal state, spool 3 is located at the upstream of leak-off pipe 2.In the off case, spool 3 is by 1 inside stream of shell Road blocks, and leak-off pipe 2 is located at the second position.

In the present embodiment, relative to the shell 1, the leak-off pipe 2 switches to described from the first position It links when two positions with the spool 3.Wherein, leak-off pipe 2 is moved synchronously with spool 3.Spool 3, which has, beats 1 inner flow passage of shell The open position opened and the block-up position for blocking 1 inner flow passage of shell.Pressure-driven in antifreeze mechanism 300 (shell 1) Under, when leak-off pipe 2 is mobile to the second position from first position relative to shell 1, spool 3 is mobile from open position to block-up position Until the inner wall runner of shell 1 is blocked.

In the present embodiment, spool 3 and leak-off pipe 2 link relative to shell 1, the manner of execution of spool 3 and leak-off pipe 2 Can be identical, for example be translation, be rotation etc., in addition, may be different movement shapes between spool 3 and leak-off pipe 2 Formula, such as spool 3 switch to block-up position from open position by rotation, and leak-off pipe 2 is switched to by translating from first position The second position.In embodiment as shown in Figure 5, leak-off pipe 2 and spool 3 translate up movement (for shell 1) together, It realizes from first position and switches to the second position, switch to block-up position from open position.

Leak-off pipe 2 has the first position being connected to shell 1 and the second position not being connected to shell 1.Leak-off pipe 2 It can be separated with shell 1 at the second position, suspension or connection status, the application can also be kept not to limit with shell 1 System.Wherein, shell 1 is displaced downwardly to can disengage with leak-off pipe 2, form the two parts mutually separated.

As preferred embodiment, the shell 1 can relative to the leak-off pipe 2 along with water flow in the water inlet pipe 200 Stream moves in the opposite direction, so that the leak-off pipe 2 switches to the second position from first position.Connected by first part 201 It is connected to movable component 800, realizes moving down until forming off state for shell 1.

In such as Fig. 2, Fig. 3, Fig. 4, embodiment shown in fig. 5, the shell 1 has the company for connecting the water inlet pipe 200 Connect end and open end.Open end has the opening protruded into for leak-off pipe 2.The leak-off pipe 2 can be protruded into from the open end In the shell 1.The outer wall of the leak-off pipe 2 is equipped with card slot 15.The shell 1 is equipped with the shackle member that can be moved radially 4.Shackle member 4 is by mobile realization radially to the locking and unlocking of leak-off pipe 2.The antifreeze mechanism 300 is located at normal shape The shackle member 4 protrudes into the card slot 15 so that the leak-off pipe 2 is located at the first position when state.

In normal state, at least partly leak-off pipe 2 protrudes into shell 1 from the open end, until the card slot of its side wall 15 are radially aligned with shackle member 4.Also, part shackle member 4 protrudes into card slot 15 and locks 2 position of leak-off pipe.At this point, aerial drainage Spool 3 is pushed and (is pushed when facing Fig. 4, Fig. 5) by pipe 2, and spool 3 is made to be moved to open position from block-up position.

When 300 internal pressure of antifreeze mechanism is higher than the pre set force, the leak-off pipe 2 makes 4 edge of shackle member It is moved radially outward and is detached from the card slot 15, and then the shell 1 is along the direction opposite with flow direction in the water inlet pipe 200 It is mobile.In this embodiment, 2 position of leak-off pipe is fixed.Shell 1 is locked on leak-off pipe 2 by shackle member 4, is being clamped After part 4 and card slot 15 are detached from, shell 1 loses the supported and suspended effect of leak-off pipe 2, so that shell 1 can be along separate leak-off pipe 2 Direction movement, until leak-off pipe 2 is communicated with the atmosphere, spool 3 blocks the runner inside shell 1.

Certainly, in other embodiments, the position of shell 1 is fixed, leak-off pipe 2 can also along with the water inlet pipe 200 flow direction movements.

In the present embodiment, resetting structure is additionally provided on the shell 1.The resetting structure can apply the shackle member 4 Add the pre set force radially inward.Resetting structure can make shackle member 4 be maintained at the locking bit that can lock leak-off pipe 2 It sets, so that leak-off pipe 2 and shell 1 remain connected to logical fixed position relative in normal state.In other embodiments, it is clamped Part 4 itself can be elastic construction, for example shackle member 4 is opening circular ring structure, at this time without additional setting resetting structure.

Specifically, the wall of the shell 1 is equipped with the through-hole 10 passed radially through for the shackle member 4.The reset knot Structure includes: the outer tube 5 and spring 6 being sheathed on outside shell 1.The outer wall of the shell 1 is equipped with top in the upstream of the outer tube 5 To step.The spring 6 is between the outer tube 5 and the contact step.The spring 6 applies to the outer tube 5 along institute State the elastic force of flow direction；The inner wall of the outer tube 5 is equipped with the first inclined-plane 9；First inclined-plane 9 applies to the shackle member 4 The pre set force.

The pre set force radially in effect so that shackle member 4 is extending at least partially into card slot 15, leak-off pipe 2 is fixed with this With the relative position of shell 1, keep the two relatively fixed.Wherein, the flow direction of the first inclined-plane 9 water along the water inlet pipe 200 to Outer incline.First inclined-plane 9 pushes when moving up (mobile far from first part 201) radially inward under the drive of outer tube 5 Shackle member 4；First inclined-plane 9 can permit clamping when moving down (mobile close to first part 201) under the drive of outer tube 5 Part 4 is moved radially outwards, so that leak-off pipe 2 pushes shackle member 4 to be moved out under the pressure-driven inside antifreeze mechanism 300 It is dynamic, realize the unlock of leak-off pipe 2.

Shackle member 4 can have various structures, and shackle member 4 can be the body of rod radially extended or strip knot Structure etc..Specifically, the shackle member 4 is spherical structure.10 cross section of through-hole is circle, which can be taper Hole, internal diameter is gradually reduced through-hole 10 radially inward.To avoid shackle member 4 from falling into shell 1 by the through-hole 10, so that card Fitting 4 is maintained between shell 1 and outer tube 5, and the diameter of the through-hole 10 is less than the diameter of the spherical structure.

To guarantee that antifreeze mechanism 300 switches to the smooth of off state from normal condition.The card slot 15 have with it is described The second inclined-plane 14 that shackle member 4 matches.Second inclined-plane 14 is flowed to along described towards 2 inner inclination of leak-off pipe. Wherein, card slot 15 is along the flow direction (flow direction that the flow direction in the application embodiment is interpreted as water in water inlet pipe 200) With upper side wall and lower wall.Second inclined-plane 14 forms the lower wall of the card slot 15.

Under the action of 300 inside water pressure of antifreeze mechanism, with the trend mutually separated between leak-off pipe 2 and shell 1, and by Shackle member 4, which protrudes into card slot 15, stops leak-off pipe 2 and shell 1 to separate.It, can be to avoid leak-off pipe by being equipped with second inclined-plane 14 2 and shackle member 4 be stuck so that leak-off pipe 2 and shell 1 are detached from smoothly, guarantee antifreeze mechanism 300 can smoothly be cut from normal condition Shift to off state.

The spring 6 is the first temperature sensing spring or material is spring steel.Wherein, first temperature sensing spring is to described outer The elastic force that pipe 5 applies can reduce with the reduction of environment temperature or when environment temperature is lower than the first predetermined temperature it is not right The outer tube 5 applies elastic force.6 material of spring is common spring 6 when being spring steel at this point, presetting provided by spring 6 Power is steady state value.

Under normal condition shown in Fig. 4, the runner 2a of leak-off pipe is connected with the runner 1a of shell 1.Such as Fig. 4, Fig. 5 institute Show.The shell 1 is equipped with sealing element 11 in the upstream of the shackle member 4.The sealing element 11 is used for the leak-off pipe 2 and institute It states and is sealed between shell 1.Specifically, the sealing element 11 is sealing ring, which is fixed on the inner wall of shell 1.It is described Shell 1 is equipped with sealing surface 7 in the upstream of the sealing element 11.By the shell 1 when the spool 3 is contacted with the sealing surface 7 Inner flow passage is closed.

In the present embodiment, the locating part positioned at 5 downstream of outer tube is additionally provided on the shell 1.The outer tube 5 with The locating part contact, which is limited, can not continue to move along the flow direction.The locating part can be fixed on the outer wall of outer tube 5, can also With with 5 integral structure of outer tube.Locating part forms retention bead on the outer wall of outer tube 5.

As shown in Figure 4, Figure 5, outer tube 5 moves upwards, and using the first inclined-plane 9 spherical shackle member 4 is moved radially inward It is dynamic.When outer tube 5 encounters limit plate (specific embodiment of locating part), outer tube 5 can not be moved up by the continuation of spring 6 contact, be protected It holds in present position.By the way that locating part is arranged, prevents outer tube 5 from moving up and be detached from the shell 1, lead to antifreeze modular construction point It dissipates, is unfavorable for secondary use, also, prevent from outer tube 5 from moving upwards to lead to spherical shackle member 4 card at through-hole 10 apart from too long Extremely, it is unfavorable for the smooth switching of 300 state of antifreeze mechanism.

To realize moving synchronously for leak-off pipe 2 and spool 3.The leak-off pipe 2 was equipped with water close to one end of the spool 3 Component 12.The wet part 12 of crossing is equipped at least one water hole 13.It can be water plate that this, which crosses wet part 12,.This crosses water plate It is fixed on the lower end of leak-off pipe 2.It crosses water plate and is equipped with multiple water holes 13 that the flow direction of water is penetrated through along water inlet pipe 200, Guarantee the stabilization that heat exchanger 100 supplies water in normal state.

The elastic component 8 for keeping the spool 3 mobile to the sealing surface is additionally provided in the shell 1.The spool 3 is towards institute The one end for stating wet part 12 is additionally provided with contact bar.It is pushed away when the leak-off pipe 2 is located at the first position by the contact bar The spool 3 is moved to open the runner in the shell 1.The elastic component 8 can be the cylinder bullet being sheathed on outside the spool 3 Spring.

When scope of readers is to Fig. 1 to Fig. 6, the second part 202 of the upper end connection water inlet pipe 200 of leak-off pipe 2.Described first Part 201 is connected between the water supply connector 700 of the gas-fired water heater and the shell 1.The second part 202 connects Between the heat exchanger 100 and the leak-off pipe 2.The upper end of leak-off pipe 2 connects the end of second part 202 by internal screw thread Portion.Leak-off pipe 2 extends along the extending direction of water inlet pipe 200.Flow direction of the shell 1 inside water inlet pipe 200 is divided into two parts: connection The lower partial shell 1b of 200 first part 201 of the water inlet pipe and top part shell body 1c being arranged for outer tube 5.Top part shell body The upper end of 1c has opening, and leak-off pipe 2 is protruded into top part shell body 1c by the opening.

Top part shell body 1c is sheathed on outside leak-off pipe 2 in normal state, and outer tube 5 is sheathed on the top part shell body 1c Outside, three is coaxially disposed.Outer diameter is identical along its length by top part shell body 1c, and the outer diameter of lower partial shell 1b is greater than top part shell The outer diameter of body 1c.The lower end of lower partial shell 1b connects the first part 201 of water inlet pipe 200 by internal screw thread.Spool 3, which is located at, to be let out The lower section of flow tube 2.

In the present embodiment, spool 3 is bar structure, and the upper end of spool 3 has the sealed end 3a of taper.Shell 1 it is interior Wall is equipped with sealing cone 7 (a kind of embodiment of sealing surface 7), and the sealed end of spool 3 is close when contacting with the sealing cone 7 Position where sealing the conical surface 7 blocks.Be arranged with cylindrical spring 6 outside spool 3, contact of the spool 3 by cylindrical spring 6, keep with The water baffle (a kind of embodiment for crossing water section) of crossing of 2 lower end of leak-off pipe is in contact.Leak-off pipe 2 move up relative to shell 1 (namely Shell 1 moves down) when, spool 3 is moved up in the case where the support of cylindrical spring 6 is pushed with leak-off pipe 2 together, is moved directly to sealing cone 7 Extremely it is in contact with sealing cone 7.

Correspondingly, leak-off pipe 2 reaches the second position will seal releasing accordingly, and can be separated with shell 1.Antifreeze Under the driving of in-house pressure, shell 1 can be detached from rapidly with leak-off pipe 2.In addition, shell 1 can also lose leak-off pipe 2 Suspension strut is detached to move down under the effect of gravity with leak-off pipe 2.After leak-off pipe 2 and shell 1 are separated, leak-off pipe 2 The exposed outside draining of lower end port, until will inside heat exchanger 100 emptying prevent bursting by freezing.

In one preferred embodiment of the application.Relief valve 900 is additionally provided on the outlet pipe 400.The pressure release Valve 900 can be opened when environment temperature is lower than the second predetermined temperature；Second predetermined temperature is lower than first predetermined temperature. It may further include the heat exchanger 100 not by spalling by relief valve 900, guarantee the interior whole in heat exchanger 100 It releases.

Specifically, as shown in Figure 7.The relief valve 900 includes valve body 91, the closeouts being set in the valve body 91 95.The second temperature sensing spring 6 for applying elastic force to the closeouts 95 is additionally provided in the valve body 91.Second temperature sensing spring 6 can drive the closeouts 95 to open the relief valve 900 when environment temperature is lower than the second predetermined temperature by deformation.

In this embodiment, valve body 91 is equipped with water inlet 92 and water outlet 93 and (can run both in the embodiment having , the application and with no restrictions).Fixed ring is equipped in valve body 91.Second memory spring 94 is temperature sensing spring.Second memory spring 94 between closeouts 95 and fixed ring.One end of second memory spring 94 connects the closeouts 95.Second memory Spring 94 can be contact state when being higher than the second predetermined temperature, will be in valve body 91 in valve seat mouth position by 95 contact of closeouts Runner block.Deformation occurs when being lower than the second predetermined temperature for second memory spring 94, which can make the second memory The length of spring 94 shortens, to pull closeouts 95 to open the runner of valve body 91, so that the water in heat exchanger 100 is whole It releases.

Please continue to refer to Fig. 1 to Fig. 7.A kind of frost valve 300, the frost valve 300 are also provided in the application embodiment With normal condition and off state；The frost valve 300 can switch under the driving of pressure from the normal condition inside it To the off state.Wherein, the frost valve 300 has closed component and aerial drainage component.

When the frost valve 300 is located at normal condition, the closed component opens its inner flow passage, and the aerial drainage Component is connected to the downstream of the closed component.When the frost valve 300 is located at off state, the closed component will be inside it Runner is closed.In off state, aerial drainage component is for releasing fluid downstream.In normal condition, aerial drainage component tool There is the connection end being connected with closed component.In off state, the connection end of aerial drainage component is communicated with the atmosphere.

The frost valve 300 can be installed on 200 position of water inlet pipe of required winterized equipment when installing.In use, aerial drainage group Part can be communicated with the atmosphere in the off case, so that fluid of the connection in the container of aerial drainage assemblies downstream be released, realize It is antifreeze.The frost valve 300 is purely mechanical valve, by the pressure-driven of therein, is supplied without electric energy, so as to power off It is used under state, there is very high application value.

Specifically, the closed component has shell 1 and can close the spool for opening 1 inner flow passage of shell 3；The aerial drainage component includes leak-off pipe 2；The leak-off pipe 2 has relative to the shell 1 is extending at least partially into the shell 1 It is internal and the spool 3 is made to open the first position of the runner and fluid can be released and to close the spool 3 described The second position of runner.The leak-off pipe 2 is detached from the shell 1 and the spool 3 is made to turn off the stream when being located at the second position Road.

Wherein, the shell 1 has connecting pin and open end；The leak-off pipe 2 can protrude into described from the open end In shell 1；The outer wall of the leak-off pipe 2 is equipped with card slot 15；The shell 1 is equipped with the shackle member 4 that can be moved radially；Institute The shackle member 4 when frost valve 300 is located at normal condition is stated to protrude into the card slot 15 so that the leak-off pipe 2 is located at described the One position；When the frost valve 300 switches to the off state from the normal condition, the leak-off pipe 2 makes the card Fitting 4, which is moved radially outwards, is detached from the card slot 15, and then the shell 1 and the leak-off pipe 2 generate relative movement.It is described Leak-off pipe 2 can be driven by the internal pressure of the frost valve 300.

The wall of the shell 1 is equipped with the through-hole 10 passed radially through for the shackle member 4；It is additionally provided on the shell 1 Resetting structure；The resetting structure includes: the outer tube 5 and spring 6 being sheathed on outside shell 1.The outer wall of the shell 1 is equipped with Contact step.The spring 6 is between the outer tube 5 and the contact step.The contact step is located at the outer tube 5 Upstream.The spring 6 applies the elastic force along the flow direction to the outer tube 5；The inner wall of the outer tube 5 is equipped with the first inclined-plane 9；First inclined-plane 9 applies the pre set force radially inward to the shackle member 4.The shackle member 4 is spherical structure； The diameter of the through-hole 10 is less than the diameter of the spherical structure.

It should be noted that the frost valve 300 in present embodiment can be with reference to institute in above embodiment or embodiment The description of the antifreeze mechanism 300 of description is no longer repeated one by one in present embodiment.

Please continue to refer to Fig. 1 to Fig. 7.A kind of water heater is also provided in the application embodiment, which includes but not It is limited to above-mentioned gas-fired water heater, it can be precious with electric heater or small kitchen.

Specifically, the water heater includes the container for storing water；The water inlet pipe 200 that is connected with the container goes out Water pipe 400；The antifreeze mechanism 300 being set on the water inlet pipe 200；The antifreeze mechanism 300 has the permission water inlet pipe The normal condition and block off state of the water inlet pipe 200 to the container water delivery that water flowing in 200 is passed through；Institute Antifreeze mechanism 300 is stated to cut from the normal condition under the driving of pressure inside it when environment temperature is lower than the first predetermined temperature Shift to the off state.

Wherein, container can be water tank, liner or heat exchanger 100.In preferred embodiment, water heater is combustion gas heat Water installations, the container are heat exchanger 100.

Water heater in present embodiment can be with gas-fired water heater described in reference above embodiment Content no longer repeats one by one herein.

Herein cited any digital value all include between lower limit value to upper limit value with the lower value of an incremented and The all values of upper value, there are the intervals of at least two units between any lower value and any much higher value.For example, such as Fruit elaborates that the quantity an of component or the value of process variable (such as temperature, pressure, time etc.) are from 1 to 90, preferably from 20 To 80, more preferably from 30 to 70, then purpose is arrived in order to illustrate also clearly listing such as 15 to 85,22 in the specification 68,43 to 51,30 to 32 is equivalent.For the value less than 1, suitably think that a unit is 0.0001,0.001,0.01,0.1. These are only intended to the example clearly expressed, it is believed that all possibility for the numerical value enumerated between minimum and peak Combination is all expressly set forth in the specification in a similar manner.

Unless otherwise indicated, all ranges all include all numbers between endpoint and endpoint.It is used together with range " about " or " approximation " be suitable for two endpoints of the range.Thus, " about 20 to 30 " are intended to cover that " about 20 to about 30 ", including at least the endpoint indicated.

All articles and reference disclosed, including patent application and publication, for various purposes by quoting knot Together in this.Describing combined term " substantially by ... constitute " should include identified element, ingredient, component or step and reality Other elements, ingredient, component or the step of the basic novel feature of the combination are not influenced in matter.Using term "comprising" or " comprising " describes the combination of element here, ingredient, component or step it is also contemplated that substantially by these elements, ingredient, component Or the embodiment that step is constituted.Here by using term " can with ", it is intended to illustrate that " can with " includes described any Attribute is all optional.

Multiple element, ingredient, component or step can be provided by single integrated component, ingredient, component or step.Optionally Ground, single integrated component, ingredient, component or step can be divided into multiple element, ingredient, component or the step of separation.It is used to The open "a" or "an" for describing element, ingredient, component or step is not said to exclude other elements, ingredient, component Or step.

It should be understood that above description is to illustrate rather than to be limited.By reading above-mentioned retouch It states, many embodiments and many applications except provided example all will be aobvious and easy for a person skilled in the art See.Therefore, the range of this introduction should not be determined referring to foregoing description, but should referring to appended claims and this The full scope of the equivalent that a little claims are possessed determines.For comprehensive purpose, all articles and with reference to including special The disclosure of benefit application and bulletin is all by reference to being incorporated herein.Theme disclosed herein is omitted in preceding claims Any aspect is not intended to abandon the body matter, also should not be considered as inventor the theme is not thought of as it is disclosed A part of utility model theme.

Claims (32)

1. a kind of water heater characterized by comprising

For storing the container of water；

Water inlet pipe, the outlet pipe being connected with the container；

The antifreeze mechanism being set on the water inlet pipe；The antifreeze mechanism, which has, allows the water flowing in the water inlet pipe to pass through Normal condition and block the off state of the water inlet pipe to the container water delivery；The antifreeze mechanism is in environment temperature The off state is switched to from the normal condition under the driving of pressure inside it when lower than the first predetermined temperature.

2. water heater as described in claim 1, it is characterised in that: the antifreeze mechanism, which is equipped with, can be located at the normal shape The pre set force of state, the pre set force are steady state value, and the antifreeze mechanism is higher than described default in the antifreeze mechanism internal pressure The off state is switched to from the normal condition under the driving of pressure inside it when power.

3. water heater as described in claim 1, it is characterised in that: the antifreeze mechanism, which is equipped with, can be located at the normal shape The pre set force of state；The pre set force is decreased below when environment temperature is lower than the first predetermined temperature and is pressed inside the antifreeze mechanism Power, so that the antifreeze mechanism switches to the off state from the normal condition under the driving of pressure inside it.

4. water heater as claimed in claim 2 or claim 3, it is characterised in that: the antifreeze mechanism is pre- lower than first in environment temperature The water in at least partly described container can also be discharged from the container when determining temperature.

5. water heater as claimed in claim 4, it is characterised in that: the antifreeze mechanism includes closed component and aerial drainage component；

When the antifreeze mechanism is located at normal condition, the closed component opens its inner flow passage, and the aerial drainage component It is connected to the downstream of the closed component；

When the antifreeze mechanism is located at off state, the closed component closes its inner flow passage, and the aerial drainage component It is communicated with the atmosphere, the water in the container is discharged.

6. water heater as claimed in claim 5, it is characterised in that: when the antifreeze mechanism is located at off state, the envelope Component is closed mutually to separate with the aerial drainage component.

7. water heater as claimed in claim 5, it is characterised in that: the closed component and the aerial drainage component can along it is described into The length direction relative motion of water pipe, so that the antifreeze mechanism switches to off state from normal condition.

8. water heater as claimed in claim 7, it is characterised in that: the closed component, which has shell and can close, to be beaten Open the spool of the enclosure interior runner；

The aerial drainage component includes leak-off pipe；The leak-off pipe has relative to the shell to be extending at least partially into the shell Portion simultaneously makes the spool open the first position of the runner and be communicated with the atmosphere and the spool is made to close the runner The second position.

9. water heater as claimed in claim 8, it is characterised in that: relative to the shell, the leak-off pipe is from described first When position switches to the second position with the valve spool.

10. water heater as claimed in claim 8 or 9, it is characterised in that: the shell can be relative to the leak-off pipe edge and institute It is mobile to state the opposite direction of flow direction in water inlet pipe, so that the leak-off pipe switches to the second position from first position.

11. water heater as claimed in claim 10, it is characterised in that: the shell has the connection for connecting the water inlet pipe End and open end；The leak-off pipe can protrude into the shell from the open end；The outer wall of the leak-off pipe is equipped with card Slot；

The shell is equipped with the shackle member that can be moved radially；The antifreeze mechanism when being located at normal condition the shackle member stretch Enter in the card slot so that the leak-off pipe is located at the first position；

When the antifreeze mechanism internal pressure is higher than the pre set force, the leak-off pipe moves the shackle member radially It is dynamic to be detached from the card slot, and then the shell is moved along the direction opposite with flow direction in the water inlet pipe.

12. water heater as claimed in claim 11, it is characterised in that: be additionally provided with resetting structure on the shell；The reset Structure can apply the pre set force radially inward to the shackle member.

13. water heater as claimed in claim 12, it is characterised in that: the wall of the shell is equipped with for the shackle member along diameter To the through-hole passed through；

The resetting structure includes: the outer tube and spring being sheathed on outside shell；The outer wall of the shell is equipped with contact platform Rank；The spring is between the outer tube and the contact step；The spring applies to the outer tube along the flow direction Elastic force；The inner wall of the outer tube is equipped with the first inclined-plane；First inclined-plane applies the pre set force to the shackle member.

14. water heater as claimed in claim 13, it is characterised in that: the shackle member is spherical structure.

15. water heater as claimed in claim 14, it is characterised in that: the diameter of the through-hole is less than the straight of the spherical structure Diameter.

16. water heater as claimed in claim 13, it is characterised in that: the card slot has the matched with the shackle member Two inclined-planes；Second inclined-plane is flowed to along described towards the leak-off pipe inner inclination.

17. water heater as claimed in claim 13, it is characterised in that: the spring is the first temperature sensing spring or material is bullet Spring steel；Wherein, first temperature sensing spring elastic force that the outer tube applies can be reduced with the reduction of environment temperature or Person does not apply elastic force to the outer tube when environment temperature is lower than the first predetermined temperature.

18. the water heater as described in claim 11-17 any one, it is characterised in that: the shell is in the shackle member Upstream is equipped with sealing element；The sealing element between the leak-off pipe and the shell for will seal；The shell is described close The upstream of sealing is equipped with sealing surface；The enclosure interior runner is closed when the spool and the sealing face contact.

19. the water heater as described in claim 13-17 any one, it is characterised in that: be additionally provided on the shell positioned at institute State the locating part in outer tube downstream；The outer tube contacted with the locating part be limited can not continue along it is described flow direction move.

20. water heater as claimed in claim 18, it is characterised in that: the leak-off pipe was equipped with close to one end of the spool Wet part；The wet part of crossing is equipped at least one water hole；

The elastic component for keeping the spool mobile to the sealing surface is additionally provided in the shell；The spool crosses water portion towards described One end of part is additionally provided with contact bar；Push the spool will by the contact bar when leak-off pipe is located at the first position The intracorporal runner of shell is opened.

21. water heater as claimed in claim 10, it is characterised in that: the water inlet pipe includes first part and second part； The first part is connected between the water supply connector of the water heater and the shell；The second part is connected to the appearance Between device and the leak-off pipe.

22. water heater as claimed in claim 21, it is characterised in that: be equipped between the first part and the water supply connector Movable component；The movable component allows the first part to move along the length direction of the water inlet pipe.

23. water heater as claimed in claim 22, it is characterised in that: the movable component includes with the first hinged end and the The connecting tube of two hinged ends；The connecting tube is hinged by the first hinged end and the first part；The connecting tube passes through the Two hinged ends and the water supply connector are hinged.

24. water heater as claimed in claim 2, it is characterised in that: the container includes heat exchanger.

25. water heater as claimed in claim 24, it is characterised in that: the pre set force is resistance to lower than the minimum of the heat exchanger Pressure value.

26. water heater as described in claim 1, it is characterised in that: be additionally provided with relief valve on the outlet pipe；The pressure release Valve can be opened when environment temperature is lower than the second predetermined temperature；Second predetermined temperature is lower than first predetermined temperature.

27. water heater as claimed in claim 26, it is characterised in that: the relief valve includes valve body, is set to the valve body Interior closeouts；The second temperature sensing spring for applying elastic force to the closeouts is additionally provided in the valve body；Second temperature-sensitive Spring can drive the closeouts to open the relief valve when environment temperature is lower than the second predetermined temperature by deformation.

28. water heater as described in claim 1, it is characterised in that: the water heater includes gas heater or wall-hung boiler.

29. a kind of frost valve, which is characterized in that the frost valve has normal condition and off state；The frost valve can be The off state is switched to from the normal condition under the driving of its internal pressure；

Wherein, the frost valve has closed component and aerial drainage component；

When the frost valve is located at normal condition, the closed component opens its inner flow passage, and the aerial drainage component connects Pass through the downstream of the closed component；

When the frost valve is located at off state, the closed component closes its inner flow passage.

30. frost valve as claimed in claim 29, it is characterised in that: the closed component has shell and can close Open the spool of the enclosure interior runner；The aerial drainage component includes leak-off pipe；The leak-off pipe has relative to the shell Have and is extending at least partially into the enclosure interior and so that the spool is opened the first position of the runner and be detached from the shell And the spool is made to turn off the second position of the runner；Wherein,

The shell has connecting pin and open end；The leak-off pipe can protrude into the shell from the open end；It is described The outer wall of leak-off pipe is equipped with card slot；

The shell is equipped with the shackle member that can be moved radially；The frost valve when being located at normal condition the shackle member protrude into So that the leak-off pipe is located at the first position in the card slot；

When the frost valve switches to the off state from the normal condition, the leak-off pipe makes the shackle member along diameter It is detached from the card slot to being displaced outwardly, and then the shell and the leak-off pipe generate relative movement.

31. frost valve as claimed in claim 30, it is characterised in that: the wall of the shell is equipped with for the shackle member along diameter To the through-hole passed through；Resetting structure is additionally provided on the shell；

The resetting structure includes: the outer tube and spring being sheathed on outside shell；The outer wall of the shell is equipped with contact platform Rank；The spring is between the outer tube and the contact step；The spring applies to the outer tube along the frost valve The elastic force of internal liquid flow direction；The inner wall of the outer tube is equipped with the first inclined-plane；It is applied to the shackle member on first inclined-plane Add pre set force radially inward.

32. frost valve as claimed in claim 31, it is characterised in that: the shackle member is spherical structure；The through-hole it is straight Diameter is less than the diameter of the spherical structure.