CN116006721A - Temperature control water switch - Google Patents

Abstract

The invention discloses a temperature control water switch, which comprises a water inlet base, a valve core assembly, an elastic component, a push rod and a thermal expansion deformation element, wherein the push rod is arranged on the water inlet base; the valve core assembly is locked on the water inlet base and forms a sealed cavity with the water inlet base; the water inlet base is provided with a water inlet channel and a water outlet channel; the water inlet channel and the water outlet channel are communicated with the sealing cavity; the thermal expansion deformation element deforms when the temperature changes to drive the ejector rod to move upwards or downwards; the ejector rod is respectively connected with the valve core assembly and the thermal expansion deformation element and pushes the valve core assembly upwards or downwards under the action of the thermal expansion deformation element so as to cut off or conduct the water inlet channel and the water outlet channel; the elastic component is respectively contacted with the valve core assembly and the ejector rod and provides elastic acting force to realize the reset of the ejector rod; the temperature control water switch provided by the embodiment of the invention realizes control of the on-off of the water adding channel by utilizing the surface temperature change of the steam generator in the steam electric appliance, has a dry burning prevention function, and meets the use requirements in specific application scenes.

Description

Temperature control water switch

Technical Field

The invention relates to the technical field of switches, in particular to a temperature-control water switch.

Background

The temperature control switch is widely applied to the intelligent household appliance fields such as electric kettles, steaming ovens, egg steaming devices and the like. However, the temperature control switch in the prior art is only used for controlling the on-off of a circuit, namely when water in the intelligent household electrical appliance is boiled or dried, the contact temperature is detected to be higher than a preset temperature value, and the movable contact piece and the static contact piece in the temperature control switch are tilted, so that the circuit is disconnected, and the circuit is stopped to continue heating.

As disclosed in the specification of chinese patent application CN216353955U, the lower switch temperature controller with integrated fin structure and steam box comprises a base and an anti-dry-burning device mounted on the base, the base extends to the outside integrally with a mounting frame, a fin is connected to the mounting frame in a swinging manner, a bimetal is arranged at the tail of the mounting frame, the bimetal is in swinging linkage fit with the anti-dry-burning device through the fin, a switch mounting position is arranged on the mounting frame, a toggle switch is connected to the mounting frame in a swinging manner through the switch mounting position, one end of the toggle switch is provided with a toggle part, and the other end of the toggle switch is connected with the head of the fin; the tail part of the rocker is integrally provided with a steam box corresponding to the bimetallic strip, and the steam box is provided with a connecting port capable of being connected with a steam pipeline; the anti-dry heating device is an anti-dry heating assembly and a conductive circuit, wherein the anti-dry heating assembly and the conductive circuit are in linkage with the temperature controller, namely, the anti-dry heating device is arranged in the temperature controller, and when the temperature controller detects that the temperature is higher than a preset temperature, the conductive circuit is disconnected to realize power failure.

As another example, chinese patent application CN112890588A discloses an egg steamer with manual switch function, including steaming an egg ware body, steaming an egg ware body includes the lid, this internal tray mechanism that is provided with of steaming an egg ware, tray mechanism's below is provided with heating mechanism, temperature controller and link gear, heating mechanism with temperature controller electric connection, temperature controller with link gear swing joint, when heating to the settlement temperature, the temperature controller disconnection, link gear resets, and heating mechanism stops heating, needs manual operation link gear, makes the inside switch-on of temperature controller, and heating mechanism just can carry out the heating work again.

Therefore, the inventor finds that the function of preventing dry heating is realized by adopting a circuit breaking mode under the normal condition in the intelligent household electrical appliance through a large number of researches and comparison of temperature control switches in the prior art, but under some use scenes, the time of cooking does not reach the preset time, the circuit is broken due to the condition of dry heating, water is needed to be added and the heating can be continued by switching on the switch again manually, a certain time difference exists from the dry heating moment to the circuit breaking moment, the moisture in the electrical appliance is completely burned off when the circuit is broken, and the temperature in the intelligent household electrical appliance is higher, so that the electrical appliance is extremely fragile.

Disclosure of Invention

The present invention aims to solve at least one of the technical problems existing in the prior art. Therefore, the invention provides a temperature-controlled water switch which realizes automatic control of water adding, has a dry burning prevention function and is suitable for steam electric appliances such as a steam oven, an egg steamer and the like.

The invention provides a temperature control water switch, which comprises a water inlet base, a valve core assembly, an elastic component, a push rod and a thermal expansion deformation element, wherein the push rod is arranged on the water inlet base; wherein:

the valve core assembly is locked on the water inlet base and forms a sealing cavity with the water inlet base;

the water inlet base is provided with a water inlet channel and a water outlet channel; the water inlet channel and the water outlet channel are communicated with the sealing cavity;

the thermal expansion deformation element deforms when the temperature changes so as to drive the ejector rod to move upwards or downwards;

the ejector rod is respectively connected with the valve core assembly and the thermal expansion deformation element, and pushes the valve core assembly upwards or downwards under the action of the thermal expansion deformation element so as to cut off or conduct the water inlet channel and the water outlet channel;

the elastic component is respectively contacted with the valve core assembly and the ejector rod and provides elastic acting force to realize the reset of the ejector rod.

As a further scheme of the invention, the valve core assembly comprises a valve core elastomer and a valve cover, wherein a first convex ring is outwards arranged on the valve core elastomer in a ring mode, and the water inlet base and the valve cover are oppositely pressed against the first convex ring so that the valve core elastomer and the water inlet base form the sealing cavity.

As a further scheme of the invention, the valve core elastomer is internally and annularly provided with a second convex ring, the top of the ejector rod is concavely provided with an annular notch corresponding to the second convex ring, and the second convex ring is clamped into the annular notch so that the ejector rod penetrates into the valve cover and then is buckled with the valve core elastomer to form a whole.

As a further scheme of the invention, sealing ribs are convexly arranged at the contact surface of the water inlet base and the valve core elastomer, a horn-shaped round platform connector is arranged between the first convex ring and the second convex ring of the valve core elastomer, and the round platform connector is subjected to compression deformation when the ejector rod moves downwards.

As a further scheme of the invention, the valve cover is provided with a base plate, an annular raised line and a supporting seat which are integrally formed, the annular raised line is matched with the base plate in shape, the annular raised line is positioned at the outer edge of the base plate to form a containing area for positioning the valve core elastomer together with the base plate, the base plate is provided with a first through hole and a plurality of threaded mounting holes, the ejector rod penetrates through the first through hole to be in buckled connection with the valve core elastomer, the base plate is in threaded locking with the water inlet base through the threaded mounting holes, and the supporting seat is positioned at the lower side of the base plate for fixing or supporting.

As a further scheme of the invention, the temperature control water switch further comprises a positioning bracket and a backstop meson piece, wherein the ejector rod ring is provided with a third convex ring, the backstop meson piece is sleeved on the ejector rod so as to form a fixed clamping position with the third convex ring for limiting the movement of the thermal expansion deformation element, the thermal expansion deformation element and the valve core component are respectively fixedly connected with the positioning bracket and are provided with a containing space for the movement of the ejector rod, and the thermal expansion deformation element is limited at the fixed clamping position to deform when the temperature changes so as to drive the ejector rod to move upwards or downwards.

As a further scheme of the invention, the positioning support is arranged in a U-shaped structure, the ejector rod is positioned at the U-shaped opening of the positioning support, the thermal expansion deformation element is a bimetallic strip, a bayonet is arranged at the U-shaped bottom of the positioning support, one end of the bimetallic strip is provided with a positioning bulge corresponding to the bayonet, the bimetallic strip is lapped on the positioning support, the positioning bulge is clamped into the bayonet, and the other end of the bimetallic strip is sleeved on the ejector rod and limited at the fixing clamping position.

As a further scheme of the invention, the elastic component is arranged as a spring piece, when the thermal expansion surface of the bimetallic strip is arranged towards one side of the water inlet base, the spring piece is sleeved on the ejector rod, the spring piece is arranged in the valve core component, and when the bimetallic strip is heated to bend and deform downwards, the ejector rod is pulled, and the valve core component is driven to displace downwards under the action of the ejector rod, so that the water inlet channel and the water outlet channel are conducted to form a continuous channel.

As a further scheme of the invention, the elastic component is arranged as a spring piece, when the thermal expansion surface of the bimetallic strip is arranged back to the water inlet base, the spring piece is sleeved on the ejector rod, the spring piece is arranged outside the valve core component, and when the bimetallic strip is heated to bend and deform upwards, the ejector rod is pushed, and under the action of the ejector rod, the valve core component is driven to shift upwards so as to stop the water inlet channel and the water outlet channel to form a closed channel.

As a further scheme of the invention, the water inlet channel and the water outlet channel of the water inlet base have a height difference, and the valve core assembly is positioned between the water inlet channel and the water outlet channel.

The embodiment of the invention has at least the following beneficial effects:

compared with the prior art, the temperature control water switch provided by the embodiment of the invention realizes control of the on-off of the water adding channel by utilizing the surface temperature change of the steam generator in the steam electric appliance, has the function of preventing dry heating, ensures that the steam electric appliance can continuously and rapidly and efficiently generate steam, meets the use requirements in specific application scenes, is especially suitable for electric appliances such as a steam oven, an egg steamer and the like, and is different from the mode that the existing temperature control switch is used for controlling the on-off of a circuit; in the concrete implementation process, the thermal expansion deformation element is heated to deform, the deformed temperature source is obtained by contacting the surface temperature of the steam generator in the electric appliance, namely, the deformation of the thermal expansion deformation element is related to the surface temperature of the steam generator in the electric appliance, the ejector rod, the valve core component and the elastic component are linked under the action of the thermal expansion deformation element, so that the valve core component is closed or conducted with the water inlet channel and the water outlet channel, when the dry heating state occurs, the thermal expansion deformation element deforms, the valve core component is downwards shifted, the water inlet channel is communicated with the water outlet channel, and the running water flows into the appointed position in the electric appliance through the water outlet channel after entering the sealing cavity from the water inlet channel, so that the electric appliance continues to normally operate, and the response speed is high.

Drawings

The foregoing and/or additional aspects and advantages of the invention will become apparent and may be better understood from the following description of embodiments taken in conjunction with the accompanying drawings in which:

FIG. 1 is a schematic perspective view of a temperature-controlled water switch according to an embodiment of the present invention;

FIG. 2 is a schematic top view of a temperature-controlled water switch according to an embodiment of the present invention;

FIG. 3 isbase:Sub>A cross-sectional structural view of A-A of FIG. 2;

FIG. 4 is a cross-sectional structural view of B-B of FIG. 2;

FIG. 5 is a schematic diagram showing an exploded structure of a temperature-controlled water switch according to an embodiment of the present invention;

fig. 6 is another schematic cross-sectional view of a temperature-controlled water switch according to an embodiment of the present invention.

Reference numerals illustrate: the water inlet base 100, the water inlet channel 110, the water outlet channel 120, the sealing cavity 130, the sealing rib 140, the valve core assembly 200, the valve core elastomer 210, the first convex ring 211, the second convex ring 212, the round table connector 213, the valve cover 220, the base plate 221, the annular convex strip 222, the supporting seat 223, the containing area 224, the first through hole 225, the threaded mounting hole 226, the elastic component 300, the ejector rod 400, the annular notch 410, the third convex ring 420, the fixing clamp position 430, the thermal expansion deformation element 500, the positioning protrusion 510, the positioning bracket 600, the bayonet 610 and the anti-back scale member 700.

Detailed Description

Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the invention.

In the description of the present invention, it should be understood that references to orientation descriptions such as upper, lower, front, rear, left, right, etc. are based on the orientation or positional relationship shown in the drawings, are merely for convenience of description of the present invention and to simplify the description, and do not indicate or imply that the apparatus or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present invention.

In the description of the present invention, a number means one or more, a number means two or more, and greater than, less than, exceeding, etc. are understood to not include the present number, and above, below, within, etc. are understood to include the present number. The description of the first and second is for the purpose of distinguishing between technical features only and should not be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.

In the description of the present invention, unless explicitly defined otherwise, terms such as arrangement, installation, connection, etc. should be construed broadly and the specific meaning of the terms in the present invention can be reasonably determined by a person skilled in the art in combination with the specific contents of the technical scheme.

The function of preventing dry burning is designed in the intelligent household electrical appliance in the normal condition and is realized by adopting a circuit breaking way, but under some use scenes, the time of cooking is not up to the preset time, the circuit is broken due to the dry burning condition, water is needed to be added and the cooking can be continued by switching on and off again manually, a certain time difference exists from the dry burning moment to the circuit breaking moment, and when the circuit is broken, the moisture in the electrical appliance is completely burned off, the temperature in the intelligent household electrical appliance is higher, and the electrical appliance is extremely easy to damage. Therefore, in steam electric appliances such as a steam oven, an egg steamer and the like, the temperature control water switch provided by the embodiment of the invention can be utilized to realize automatic water adding.

Fig. 1 to 5 show the structure of a temperature-controlled water switch according to an embodiment of the present invention. Specifically, the embodiment of the invention provides a temperature-controlled water switch, which comprises a water inlet base 100, a valve core assembly 200, an elastic member 300, a push rod 400 and a thermal expansion deformation element 500; wherein:

the valve core assembly 200 is locked on the water inlet base 100 and forms a sealing cavity 130 with the water inlet base 100;

a water inlet base 100 provided with a water inlet channel 110 and a water outlet channel 120; the water inlet channel 110 and the water outlet channel 120 are communicated with the sealing cavity 130;

the thermal expansion deformation element 500 deforms to drive the ejector rod 400 to move upwards or downwards when the temperature changes;

the ejector rod 400 is respectively connected with the valve core assembly 200 and the thermal expansion deformation element 500, and pushes the valve core assembly 200 upwards or downwards under the action of the thermal expansion deformation element 500 so as to stop or conduct the water inlet channel 110 and the water outlet channel 120;

the elastic member 300 is in contact with the valve core assembly 200 and the jack 400, respectively, and provides an elastic force to achieve restoration of the jack 400.

Compared with the prior art, the temperature control water switch provided by the embodiment of the invention realizes control of the on-off of the water adding channel by utilizing the surface temperature change of the steam generator in the steam electric appliance, has the function of preventing dry heating, ensures that the steam electric appliance can continuously and rapidly and efficiently generate steam, meets the use requirements in specific application scenes, is especially suitable for electric appliances such as a steam oven, an egg steamer and the like, and is different from the mode that the existing temperature control switch is used for controlling the on-off of a circuit; in a specific implementation process, the thermal expansion deformation element 500 is heated to deform, and the deformed temperature is obtained by contacting the surface temperature of the steam generator in the electrical appliance, namely, the deformation of the thermal expansion deformation element 500 is related to the surface temperature of the steam generator in the electrical appliance, the ejector rod 400, the valve core assembly 200 and the elastic member 300 are linked under the action of the thermal expansion deformation element 500, so that the valve core assembly 200 is blocked or connected with the water inlet channel 110 and the water outlet channel 120, when the thermal expansion deformation element 500 is in a dry burning state, the valve core assembly 200 is deformed, the water inlet channel 110 is downwards shifted and communicated with the water outlet channel 120, and flowing water flows into a designated position in the electrical appliance through the water outlet channel 120 after entering the sealing cavity 130 from the water inlet channel 110, so that the electrical appliance continues to normally operate, and the response speed is high.

In a preferred embodiment, as shown in fig. 3-5, the valve core assembly 200 includes a valve core elastomer 210 and a valve cover 220, the valve core elastomer 210 is provided with a first convex ring 211 outwards in a ring manner, and the water inlet base 100 and the valve cover 220 are oppositely pressed against the first convex ring 211 so that the valve core elastomer 210 and the water inlet base 100 form a sealed cavity 130; it can be understood that the water inlet base 100, the valve core elastomer 210 and the valve cover 220 are sequentially arranged from top to bottom, the valve core elastomer 210 is arranged between the water inlet base 100 and the valve cover 220, and the valve cover 220 and the water inlet base 100 are combined to press the valve core elastomer 210 due to the certain elasticity of the first convex ring 211, the valve core elastomer 210 and the water inlet base 100 form a sealing cavity 130, and the sealing cavity 130 is communicated with the water inlet channel 110 and the water outlet channel 120 of the water inlet base 100.

In a preferred embodiment, as shown in fig. 3-5, the valve core elastomer 210 is provided with a second convex ring 212 in an inward ring, the top of the push rod 400 is concavely provided with an annular notch 410 corresponding to the second convex ring 212, and the second convex ring 212 is clamped into the annular notch 410 to be buckled with the valve core elastomer 210 into a whole after the push rod 400 penetrates into the valve cover 220; that is, the ejector rod 400 and the valve core elastic body 210 form a whole, and when the ejector rod 400 moves up and down, the valve core elastic body 210 is driven to be linked, and the valve core elastic body 210 is stressed to elastically deform; in the cut-off state of the water inlet channel 110 and the water outlet channel 120, the valve core elastomer 210 props against the water inlet channel 110 or the water outlet channel 120, so that the communicated channels are closed; in the on state of the water inlet channel 110 and the water outlet channel 120, the valve core elastic body 210 is downwardly displaced by the ejector rod 400 and is elastically deformed, so that the water inlet channel 110, the sealing cavity 130 and the water outlet channel 120 are communicated, and external flowing water can flow into a designated position in the electric appliance through the temperature control water switch to prevent dry burning.

In a preferred embodiment, as shown in fig. 3 to 5, the water inlet base 100 is convexly provided with a sealing rib 140 at the contact surface with the valve core elastomer 210, a horn-shaped round table connector 213 is arranged between the first convex ring 211 and the second convex ring 212 of the valve core elastomer 210, and when the ejector rod 400 moves downwards, the round table connector 213 is compressed and deformed under force; because the valve core elastomer 210 has certain elasticity, when the valve core elastomer 210 is assembled, the sealing ribs 140 of the water inlet base 100 press the valve core elastomer 210 to achieve good sealing performance, the truncated cone connecting body 213 is arranged in a horn shape, the ejector rod 400 moves downwards, the truncated cone connecting body 213 is compressed and deformed under force, the ejector rod 400 moves upwards, the truncated cone connecting body 213 can be restored to the original position, and the valve core elastomer has good elastic deformation performance.

In a preferred embodiment, as shown in fig. 3-5, the valve cover 220 is provided with a base plate 221, an annular raised line 222 and a supporting seat 223 which are integrally formed, the annular raised line 222 is in shape fit with the base plate 221, the annular raised line 222 is positioned at the outer edge of the base plate 221 to form a containing area 224 for positioning the valve core elastomer 210 together with the base plate 221, the base plate 221 is provided with a first through hole 225 and a plurality of threaded mounting holes 226, the ejector rod 400 passes through the first through hole 225 to be in buckling connection with the valve core elastomer 210, the base plate 221 is in threaded locking with the water inlet base 100 through the threaded mounting holes 226, and the supporting seat 223 is positioned at the lower side of the base plate 221 for fixing or supporting; when the valve core elastic body 210 is assembled, the valve cover 220 is placed, and the containing area 224 formed by the annular raised line 222 and the base plate 221 is just matched with the first raised ring 211 at the lower side of the valve core elastic body 210, so that the positioning function is realized; before/after assembling the valve core elastomer 210 and the valve cover 220, the push rod 400 may be installed at the second flange 212 in the valve core elastomer 210 to form a linkage whole; the push rod 400 penetrates the first through hole 225 of the valve cover 220; after that, the water inlet base 100 is covered, and the lower side of the water inlet base 100 is just contacted with the first convex ring 211 of the valve core elastic body 210, and the valve cover 220 and the valve core elastic body 210 are locked on the water inlet base 100 by adopting self-tapping screws, so that a sealing cavity 130 is formed between the valve core elastic body 210 and the water inlet base 100.

In a preferred embodiment, as shown in fig. 1-6, the temperature-controlled water switch may further include a positioning bracket 600 and a retaining washer 700, the ejector rod 400 is provided with a third protruding ring 420 in a surrounding manner, the retaining washer 700 is sleeved on the ejector rod 400 to form a fixing clamping position 430 with the third protruding ring 420 for limiting the movement of the thermal expansion deformation element 500, the thermal expansion deformation element 500 and the valve core assembly 200 are respectively fixedly connected with the positioning bracket 600, and a containing space for the movement of the ejector rod 400 is reserved, and the thermal expansion deformation element 500 is limited at the fixing clamping position 430 to deform when the temperature changes so as to drive the ejector rod 400 to move upwards or downwards; it will be appreciated that the positioning bracket 600 serves as a connection fixture; the thermal expansion deformation element 500 deforms due to thermal expansion, and a certain movable space is needed to cooperate with the ejector rod 400 to realize the displacement of the valve core elastomer 210 in the valve core assembly 200; compared with the limit of the thermal expansion deformation element 500 by directly arranging the fixed mounting structure on the ejector rod 400, the fixed clamping position 430 formed by the cooperation of the stop meson piece 700 and the third convex ring 420 can more flexibly assemble the thermal expansion deformation element 500, and the expansibility is stronger, namely, the stop meson piece 700 and the third convex ring 420 cooperate up and down to limit the movement range of the thermal expansion deformation element 500, so that the ejector rod 400 can be pushed to link when the thermal expansion deformation element 500 is subjected to bending deformation.

In a preferred embodiment, as shown in fig. 1-5, the positioning bracket 600 is provided in a U-shaped structure, the ejector rod 400 is located at a U-shaped opening of the positioning bracket 600, the thermal expansion deformation element 500 is a bimetallic strip, a bayonet 610 is provided at the U-shaped bottom of the positioning bracket 600, one end of the bimetallic strip is provided with a positioning protrusion 510 corresponding to the bayonet 610, the bimetallic strip is lapped on the positioning bracket 600, the positioning protrusion 510 is clamped into the bayonet 610, and the other end of the bimetallic strip is sleeved on the ejector rod 400 and limited at the fixing clamping position 430; it will be appreciated that a bi-metallic strip, which is a composite of two or more metals or other materials having suitable properties, will deform and bend when heated, depending on the bending characteristics of the bi-metal, with two or more bi-metallic strips having different coefficients of thermal expansion; the supporting seat 223 of the valve cover 220 is locked on the positioning bracket 600 through a self-tapping screw, one end of the bimetallic strip is fixed on the positioning bracket 600, and the other end is limited at the fixed clamping position 430 of the ejector rod 400; according to the characteristics of the bimetal, the positioning bracket 600 is provided with a U-shaped structure, on one hand, the positioning bracket is well connected and fixed with the bimetal, and on the other hand, a certain movable space can be provided for the bimetal and the ejector rod 400 to move.

The elastic member 300 is provided at a different position in the temperature control switch, and may be classified into a normally open type temperature water switch and a normally closed type temperature water switch. As shown in fig. 2-3, is a normally open temperature controlled water switch. Shown in fig. 6 is a normally closed temperature controlled water switch. The following is a detailed description.

As shown in fig. 2-3, the temperature-controlled water switch is a normally open type water switch, the elastic member 300 is a spring member, when the thermal expansion surface of the bimetallic strip is arranged back to the water inlet base 100, the spring member is sleeved on the ejector rod 400, and the spring member is arranged outside the valve core assembly 200, when the bimetallic strip is heated and bent upwards, the ejector rod 400 is pushed, and the valve core assembly 200 is driven to shift upwards under the action of the ejector rod 400, so that the water inlet channel 110 and the water outlet channel 120 are blocked to form a closed channel; specifically, the spring member is disposed outside the valve core assembly 200, two ends of the spring member respectively abut against the valve cover 220 and the third convex ring 420, and due to the elastic action of the spring member, the ejector rod 400 is displaced downward, and the valve core elastic body 210 connected with the ejector rod 400 is also displaced downward, so that the water inlet channel 110 and the water outlet channel 120 are communicated via the sealing cavity 130, and the temperature water switch maintains a normally open state; at this time, the thermal expansion surface of the bimetal is disposed opposite to the water inlet base 100, that is, the thermal expansion surface of the bimetal is disposed below, when the temperature exceeds the preset range, the bimetal is bent and deformed upwards by heating, so as to push the push rod 400 upwards, the spring member is forced to compress, and the valve core elastic body 210 is also displaced upwards, so that the water inlet channel 110 and the water outlet channel 120 of the water inlet base 100 are disconnected, and the closed channel is a cut-off state; when the temperature is restored to the preset range, the bimetal is restored to the original shape, the spring member is restored, and the push rod 400 is also downwardly displaced thereby, opening the passage.

As shown in fig. 6, the elastic member 300 is a spring member, when the thermal expansion surface of the bimetal is set towards one side of the water inlet base 100, the spring member is sleeved on the ejector rod 400, and the spring member is arranged in the valve core assembly 200, when the bimetal is heated and bent downwards, the ejector rod 400 is pulled, and the valve core assembly 200 is driven to displace downwards under the action of the ejector rod 400, so that the water inlet channel 110 and the water outlet channel 120 are conducted to form a continuous channel; specifically, the spring member is disposed in the valve core assembly 200, that is, in the valve core elastomer 210, two ends of the spring member respectively abut against the valve cover 220 and the valve core elastomer 210, and due to the elastic action of the spring member, the valve core elastomer 210 is shifted upwards, the passages of the water inlet channel 110 and the water outlet channel 120 are cut off, and the temperature water switch maintains a normally closed state; at this time, the thermal expansion surface of the bimetal is installed facing the water inlet base 100, that is, the thermal expansion surface of the bimetal is arranged above, when the temperature exceeds the preset range, the bimetal is bent and deformed downwards by heating, the ejector rod 400 is pulled to displace downwards, the spring member is stressed and compressed, the valve core elastic member displaces downwards, so that the water inlet channel 110, the sealing cavity 130 and the water outlet channel 120 of the water inlet base 100 are communicated, and the water can flow into the appointed position in the electric appliance through the temperature control switch as a communicating channel, namely, a conducting state; when the temperature is restored to the preset range, the bimetallic strip is restored to the original shape, the spring piece is restored, the valve core elastic piece is pushed to shift upwards, the ejector rod 400 is upwards, and the temperature control switch is restored to the normally closed state.

The normally open type temperature water switch and the normally closed type temperature water switch can be flexibly designed and used according to different use scenes, and are not repeated here.

In a preferred embodiment, as shown in fig. 1 to 5, the water inlet channel 110 and the water outlet channel 120 of the water inlet base 100 have a height difference, and the valve core assembly 200 is located between the water inlet channel 110 and the water outlet channel 120; as shown in fig. 3, a sealing cavity 130 is formed between the valve core elastic member and the water inlet base 100, and flowing water flows out through the water outlet channel 120 after entering the sealing cavity 130 through the water inlet channel 110, wherein the water inlet channel 110 is positioned on the side wall of the water inlet base 100, the water outlet channel 120 is positioned on the top of the water inlet base 100, the water inlet channel 110 is lower than the water outlet channel 120, and the upward displacement of the valve core elastic member can block the water inlet channel 110.

The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge of one of ordinary skill in the art without departing from the spirit of the present invention.

Claims (10)

1. The temperature control water switch is characterized by comprising a water inlet base, a valve core assembly, an elastic component, a push rod and a thermal expansion deformation element; wherein:

the valve core assembly is locked on the water inlet base and forms a sealing cavity with the water inlet base;

the water inlet base is provided with a water inlet channel and a water outlet channel; the water inlet channel and the water outlet channel are communicated with the sealing cavity;

the thermal expansion deformation element deforms when the temperature changes so as to drive the ejector rod to move upwards or downwards;

the ejector rod is respectively connected with the valve core assembly and the thermal expansion deformation element, and pushes the valve core assembly upwards or downwards under the action of the thermal expansion deformation element so as to cut off or conduct the water inlet channel and the water outlet channel;

the elastic component is respectively contacted with the valve core assembly and the ejector rod and provides elastic acting force to realize the reset of the ejector rod.

2. The temperature-controlled water switch of claim 1, wherein the valve core assembly comprises a valve core elastomer and a valve cover, the valve core elastomer is provided with a first convex ring in an outward ring, and the water inlet base and the valve cover are pressed against the first convex ring in an involution manner so that the valve core elastomer and the water inlet base form the sealing cavity.

3. The temperature-controlled water switch according to claim 2, wherein the valve core elastomer is internally provided with a second convex ring in a ring manner, the top of the ejector rod is concavely provided with an annular notch corresponding to the second convex ring, and the second convex ring is clamped into the annular notch so that the ejector rod is buckled with the valve core elastomer into a whole after penetrating into the valve cover.

4. A temperature-controlled water switch according to claim 3, wherein the water inlet base is provided with sealing ribs at the contact surface with the valve core elastomer, a horn-shaped round table connector is arranged between the first convex ring and the second convex ring of the valve core elastomer, and the round table connector is compressed and deformed under the action of force when the ejector rod moves downwards.

5. The temperature-controlled water switch according to claim 2, wherein the valve cover is provided with an integrally formed base plate, an annular protruding strip and a supporting seat, the annular protruding strip is matched with the base plate in shape, the annular protruding strip is located on the outer edge of the base plate to form a containing area for locating the valve core elastomer together with the base plate, the base plate is provided with a first through hole and a plurality of threaded mounting holes, the ejector rod penetrates through the first through hole to be in buckling connection with the valve core elastomer, the base plate is in threaded locking with the water inlet base through the threaded mounting holes, and the supporting seat is located on the lower side of the base plate to be used for fixing or supporting.

6. The temperature-controlled water switch according to claim 1, further comprising a positioning bracket and a backstop meson member, wherein a third convex ring is arranged on the ejector rod in a surrounding manner, the backstop meson member is sleeved on the ejector rod to form a fixing clamping position with the third convex ring for limiting the movement of the thermal expansion deformation element, the thermal expansion deformation element and the valve core assembly are fixedly connected with the positioning bracket respectively, a containing space for the movement of the ejector rod is reserved, and the thermal expansion deformation element is limited at the fixing clamping position to deform when the temperature changes so as to drive the ejector rod to move upwards or downwards.

7. The temperature-controlled water switch according to claim 6, wherein the positioning bracket is arranged in a U-shaped structure, the ejector rod is positioned at a U-shaped opening of the positioning bracket, the thermal expansion deformation element is a bimetallic strip, a bayonet is arranged at the U-shaped bottom of the positioning bracket, one end of the bimetallic strip is provided with a positioning bulge corresponding to the bayonet, the bimetallic strip is lapped on the positioning bracket, the positioning bulge is clamped into the bayonet, and the other end of the bimetallic strip is sleeved on the ejector rod and limited at the fixing clamping position.

8. The temperature-controlled water switch according to claim 7, wherein the elastic member is a spring member, when the thermal expansion surface of the bimetallic strip is arranged towards one side of the water inlet base, the spring member is sleeved on the ejector rod, and the spring member is arranged in the valve core assembly, and when the bimetallic strip is heated to bend downwards, the ejector rod is pulled, and the valve core assembly is driven to displace downwards under the action of the ejector rod, so that the water inlet channel and the water outlet channel are conducted to form a continuous channel.

9. The temperature-controlled water switch according to claim 7, wherein the elastic member is a spring member, when the thermal expansion surface of the bimetal is opposite to the water inlet base, the spring member is sleeved on the ejector rod, and the spring member is arranged outside the valve core assembly, and when the bimetal is heated and bent upwards, the ejector rod is pushed, and under the action of the ejector rod, the valve core assembly is driven to shift upwards so as to stop the water inlet channel and the water outlet channel to form a closed channel.

10. The temperature-controlled water switch of claim 1, wherein the water inlet channel and the water outlet channel of the water inlet base have a height difference, and the valve core assembly is positioned between the water inlet channel and the water outlet channel.

Images