Water inlet valve core and temperature controller

Abstract

This utility model relates to a water inlet valve core and a thermostat, including a water inlet pipe and a first branch pipe and a second branch pipe connected to the water inlet pipe. The water inlet pipe is divided into an upper cavity that connects to the upper pipe opening and a lower cavity that connects to the lower pipe opening. The first branch pipe connects to the upper cavity, and the second branch pipe connects to the lower cavity. A detachable steel cap water outlet is connected to the upper side of the water inlet pipe. The water inlet cavity inside the steel cap water outlet is connected to the upper cavity, and the steel cap water outlet has an outlet hole that connects to the water inlet cavity. Existing tea stoves using this structure of thermostat can simultaneously assemble a water pump into an electric kettle. The electric kettle is easy to disassemble and assemble, making it convenient to repair or replace a damaged water pump. The addition of a detachable steel cap water outlet to the water inlet valve core, when applied to a fountain-type kettle, can reduce the water flow speed and prevent the water jet from the upper pipe opening from directly forming a water column that sprays upwards.

Description

Technical Field

[0001] This utility model relates to the field of thermostats, specifically an inlet valve core and a thermostat. Background Technology

[0002] Most current electric kettles with a perforated design have their water pumps installed in a base on a tabletop. When the pump malfunctions, the base needs to be removed from the tabletop and then disassembled further, making repairs inconvenient. Therefore, some tea kettles now incorporate the water pump into the kettle, with further improvements to the matching thermostat structure. For example, Chinese patent document, application number 202420562112.5, describes a thermostat and kettle with an inlet pipe including a first pipe and a second pipe, which connect to the water pump inside the kettle, thus integrating the pump for easier future repair or replacement. However, this kettle's internal structure still has some drawbacks, such as the water flow from the inlet pipe being too fast or forming a water column. Therefore, the applicant has improved the structure to perfect the existing thermostat technology, making it more suitable for consumers. Utility Model Content

[0003] The purpose of this utility model is to solve the above-mentioned existing problems and provide a simple and reasonable inlet valve core and thermostat.

[0004] A water inlet valve core includes a water inlet pipe and a first branch pipe and a second branch pipe connected to the water inlet pipe. The water inlet pipe is divided into an upper cavity that communicates with an upper pipe opening and a lower cavity that communicates with a lower pipe opening. The first branch pipe communicates with the upper cavity, and the second branch pipe communicates with the lower cavity. A detachable steel cover water outlet is connected to the upper side of the water inlet pipe. The water inlet cavity inside the steel cover water outlet is connected to the upper cavity, and the steel cover water outlet has an outlet hole that communicates with the water inlet cavity.

[0005] The objective of this utility model can also be achieved by the following technical measures:

[0006] As a more specific embodiment, the bottom of the steel cover outlet is provided with a connection port that connects to the upper pipe opening, and the steel cover outlet is provided with a backflow prevention device, which is moved and blocked on the upper side of the connection port by force.

[0007] As a further solution, a connecting pipe extends downward from the bottom of the steel cover water outlet corresponding to the communication port, and is tightly inserted into the upper pipe opening through the connecting pipe, so that the steel cover water outlet and the water inlet pipe form a detachable connection.

[0008] As a further embodiment, the steel cover water outlet includes a steel cover base and a steel cover. The steel cover is tightly fitted onto the upper side of the steel cover base, and the two together define the water inlet cavity. The steel cover is at least higher than the steel cover base, and multiple water outlet holes are circumferentially opened on the higher part.

[0009] As a further embodiment, the backflow prevention device includes a first steel ball. The steel cover seat has an open steel ball placement groove with an inclined bottom facing the connection opening. The first steel ball is freely placed in the steel ball placement groove and, guided by the inclined bottom and by its own weight, blocks the connection opening.

[0010] Alternatively, a sealing spring is provided between the first steel ball and the steel cover or steel cover seat, and the first steel ball is blocked at the communication port by the elastic potential energy of the sealing spring.

[0011] As a further embodiment, the bottom surface of the steel cover water outlet is provided with an annular groove along the outer periphery of the connecting port, and an elastic sealing ring is embedded in the annular groove, with the top surface of the water inlet pipe pressed against the elastic sealing ring.

[0012] As a further embodiment, the first branch pipe and the second branch pipe are both integrally formed from the side wall of the inlet pipe in the same direction; the first branch pipe and the second branch pipe are arranged parallel to each other and perpendicular to each other with respect to the inlet pipe; the main pipe sections of the first branch pipe and the second branch pipe are also integrally connected by a connecting plate.

[0013] As a further embodiment, a one-way valve core is also provided in the lower tube cavity; the one-way valve core includes a return spring, a second steel ball and a leak-proof sleeve arranged from top to bottom, and the second steel ball is sealed against the leak-proof sleeve by the return spring.

[0014] The purpose of this utility model is achieved as follows:

[0015] A thermostat includes an upper connector and a metal bracket disposed on the upper side of the upper connector. The upper connector is provided with a conductive line, which includes an anti-dry-burning switch. The metal bracket is provided with an anti-dry-burning device that engages with the anti-dry-burning switch. The thermostat is characterized in that a central assembly channel is provided inside the upper connector, and a water inlet valve core with the above-mentioned structure is installed in the central assembly channel.

[0016] As a further embodiment, the metal bracket has a central clearance opening corresponding to the water inlet pipe, and the metal bracket has a supporting step surface along the outer periphery of the central clearance opening; the side wall of the steel cover water outlet extends with a limiting ring that abuts against the supporting step surface.

[0017] The beneficial effects of this utility model are as follows:

[0018] This utility model discloses an inlet valve core and a thermostat. When the thermostat of this structure is applied to an existing tea stove, the water pump can be installed in the electric kettle at the same time. The electric kettle is easy to disassemble and assemble, making it convenient to repair or replace a damaged water pump. The addition of a detachable steel cap outlet to the inlet valve core can reduce the water flow speed when applied to a fountain-type kettle, preventing the water jet from the upper pipe from directly forming a water column and spraying upwards. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the inlet valve core structure in this utility model.

[0020] Figure 2 This is a schematic diagram of the cross-sectional structure of the water inlet valve core in this utility model.

[0021] Figure 3 This is a schematic diagram of another embodiment of the reflux cessation device of this utility model.

[0022] Figure 4 This is a schematic diagram of the temperature controller structure in this utility model.

[0023] Figure 5 This is an exploded view of the temperature controller in this utility model. Detailed Implementation

[0024] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0025] See Figure 1 and Figure 2 As shown, a water inlet valve core includes a water inlet pipe 1 and a first branch pipe 2 and a second branch pipe 3 connected to the water inlet pipe 1. The water inlet pipe 1 is divided into an upper pipe cavity 101 that connects to an upper pipe port 1a and a lower pipe cavity 102 that connects to a lower pipe port 1b. The first branch pipe 2 is connected to the upper pipe cavity 101, and the second branch pipe 3 is connected to the lower pipe cavity 102. A detachable steel cover water outlet 4 is connected to the upper side of the water inlet pipe 1. The water inlet cavity 401 in the steel cover water outlet 4 is connected to the upper pipe cavity 101. The steel cover water outlet 4 has an outlet hole 402 that connects to the water inlet cavity 401.

[0026] The existing thermostat with this structure can also be installed in the electric kettle. The electric kettle is easy to disassemble and install, making it convenient to repair or replace the damaged water pump. The addition of a detachable steel cap outlet 4 to the inlet valve core A can reduce the water flow speed when applied to a spring-type kettle, preventing the water jet from the upper pipe 1a from forming a water column and spraying upwards.

[0027] The bottom of the steel cover water outlet 4 is provided with a connecting port 403 that connects to the upper pipe port 1a. The steel cover water outlet is provided with a backflow prevention device. The backflow prevention device is moved and blocked on the upper side of the connecting port 403 by force. The backflow prevention device seals the connecting port 403 to prevent backflow.

[0028] The bottom surface of the steel cap water outlet 4 has a connecting pipe 43 extending downward from the corresponding connecting port 403. The connecting pipe 43 is tightly inserted into the upper pipe port 1a, so that the steel cap water outlet 4 and the water inlet pipe 1 form a detachable connection. This structure allows the steel cap water outlet 4 to be installed separately on the water inlet pipe 1 after the water inlet pipe 1 and the thermostat are assembled, making the installation of the thermostat simpler. Moreover, by using the connection method of embedding the connecting pipe 43 into the upper pipe port 1a, the steel cap water outlet 4 can be fixed without relying on the thermostat or other structures of the electric kettle.

[0029] Furthermore, to facilitate the insertion of the connecting tube 43 into the upper tube opening 1a, the bottom of the connecting tube 43 has an inclined guide surface, which helps the connecting tube 43 to be aligned with the upper tube opening 1a.

[0030] The steel cover water outlet 4 includes a steel cover base 41 and a steel cover 42. The steel cover 42 is tightly fitted onto the upper side of the steel cover base 41, and the two together define the water inlet cavity 401. The steel cover 42 is at least higher than the steel cover base 41, and multiple water outlet holes 402 are opened circumferentially on the higher part; so that the steel cover water outlet 4 can be disassembled to facilitate the placement of the first steel ball 5.

[0031] In this embodiment, the anti-backflow device includes a first steel ball 5. The steel cover seat 41 is provided with an open steel ball placement groove 411. The steel ball placement groove 411 is provided with an inclined groove bottom 412 facing the communication port 403. The first steel ball 5 is freely placed in the steel ball placement groove 411 and blocked on the communication port 403 by its own weight, guided by the inclined groove bottom 412.

[0032] In other embodiments, a sealing spring is provided between the first steel ball 5 and the steel cover 42 or the steel cover seat 41, and the first steel ball 5 is blocked on the communication port 403 by the elastic potential energy of the sealing spring (this embodiment is not shown in the drawings).

[0033] In more embodiments, see Figure 3 As shown, the backflow prevention device includes a leak-proof umbrella cap 51, which is made of an elastic structure such as silicone. The leak-proof umbrella cap 51 is connected to the bottom of the steel cover seat 41 through the bottom fastening post.

[0034] The bottom surface of the steel cover 41 is provided with an annular groove 413 along the outer periphery of the connecting port 403. An elastic sealing ring 6 is embedded in the annular groove 413. The top surface of the water inlet pipe 1 is pressed against the elastic sealing ring 6. The elastic sealing ring 6 seals the gap between the water inlet pipe 1 and the water outlet 4 of the steel cover, and prevents water leakage when it is detachable.

[0035] The first branch pipe 2 and the second branch pipe 3 are integrally formed from the side wall of the water inlet pipe 1 in the same direction; the first branch pipe 2 and the second branch pipe 3 are arranged parallel to each other and perpendicular to the water inlet pipe 1; the first branch pipe 2 and the second branch pipe 3 in the same direction facilitate subsequent connection work and can improve production efficiency.

[0036] The main sections of the first branch pipe 2 and the second branch pipe 3 are also integrally connected by a connecting plate 23; the connecting plate 23 can improve the strength of the first branch pipe 2 and the second branch pipe 3, making them less prone to bending or breaking.

[0037] The lower pipe cavity 102 is also provided with a one-way valve core 7; the one-way valve core 7 includes a return spring 71, a second steel ball 72 and a leak-proof sleeve 73 arranged from top to bottom, the second steel ball 72 is sealed against the leak-proof sleeve 73 by the return spring 71; it can prevent water leakage from the residual water in the lower pipe cavity 102 or the second branch pipe 3 after the electric kettle is lifted; in more embodiments, the one-way valve core 7 can be omitted from the lower pipe cavity 102 (the water pump itself can play the role of water circuit cut-off).

[0038] A thermostat, see Figure 4 and Figure 5 As shown, it includes an upper connecting seat 8 and a metal bracket 9 disposed on the upper side of the upper connecting seat 8. The upper connecting seat 8 is provided with conductive lines, including an anti-dry-burning switch 10. The metal bracket 9 is provided with an anti-dry-burning device 11 that is in contact with the anti-dry-burning switch 10. A central assembly channel 801 is opened in the upper connecting seat 8, and the water inlet valve core A with the above structure is installed in the central assembly channel 801.

[0039] The conductive circuit includes concentric conductive rings of different diameters arranged in the upper connecting seat 8. The anti-dry-burning switch 10 is connected in series between the conductive rings. The anti-dry-burning switch 10 includes a moving contact and a stationary contact that touch each other. The anti-dry-burning switch 10 includes a bimetallic strip fixed on the metal bracket 9 and an insulating rod disposed between the bimetallic strip and the moving contact. When the temperature sensed by the bimetallic strip is equal to or exceeds a set value, it deforms and pushes the insulating rod, driving the moving contact and the stationary contact to separate and cut off the power. The anti-dry-burning switch 10 and the anti-dry-burning device 11 are existing technologies and will not be described in detail here.

[0040] The metal bracket 9 has a central clearance opening 901 corresponding to the water inlet pipe 1, and the metal bracket 9 has a supporting step surface 902 along the outer periphery of the central clearance opening 901; the side wall of the steel cover water outlet 4 extends with a limiting ring 414 that abuts against the supporting step surface 902, and the limiting ring 414 is integrally formed from the side wall of the steel cover seat 41; when the steel cover water outlet 4 is installed into the water inlet pipe 1, the cooperation between the supporting step surface 902 and the limiting ring 414 plays a role in positioning and limiting.

[0041] Furthermore, a notch 904 of a certain width is provided on the supporting step surface 902. The limiting ring 414 extends outward to form a limiting block 415. The extension direction of the limiting block 415 is consistent with that of the first branch pipe 2 and the second branch pipe 3. The limiting block 415 is swaying within the notch 904 and engages with the two side walls of the notch 904 for limiting. The engagement of the limiting block 415 with the notch 904 allows the first branch pipe 2 and the second branch pipe 3 to have a certain swing space, allowing for position adjustment as needed and facilitating pipe connection. Secondly, the limiting block 415 abuts against the left or right side wall, preventing excessive swinging of the first branch pipe 2 and the second branch pipe 3.

[0042] In addition, several heightening connecting protrusions 81 extend from the upper connecting seat 8. A through hole 903 is opened on one side of the metal bracket 9 corresponding to the heightening connecting protrusion 81. The fastening unit passes through the through hole 903 and connects with the heightening connecting protrusion 81, so that the metal bracket 9 is suspended and connected to the upper side of the upper connecting seat 8. The outer ends of the first branch pipe 2 and the second branch pipe 3 extend out of the outside of the suspended space.

[0043] The first branch pipe 2 and the second branch pipe 3 protrude outward from the outer side of the upper connecting seat 8, making it easier to connect the water pump to the hose between the first branch pipe 2 or the second branch pipe 3 and reducing interference from the upper connecting seat 8 or the metal bracket 9.

[0044] The above describes the preferred embodiments of this utility model, illustrating and describing its basic principles, main features, and advantages. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of protection of this utility model as defined by the appended claims and their equivalents.

Claims

1. A water inlet valve core, comprising a water inlet pipe and a first branch pipe and a second branch pipe connected to the water inlet pipe, wherein the water inlet pipe is divided into an upper cavity communicating with an upper pipe opening and a lower cavity communicating with a lower pipe opening, the first branch pipe communicating with the upper cavity, and the second branch pipe communicating with the lower cavity, characterized in that... The upper side of the water inlet pipe is connected to a detachable steel cover water outlet. The water inlet cavity inside the steel cover water outlet is connected to the upper pipe cavity, and the steel cover water outlet has an outlet hole that connects to the water inlet cavity.

2. The inlet valve core according to claim 1, characterized in that: The bottom of the steel cover water outlet is provided with a connection port that connects to the upper pipe opening. The steel cover water outlet is provided with a backflow prevention device, which is moved and blocked on the upper side of the connection port by force.

3. The inlet valve core according to claim 2, characterized in that: The bottom surface of the steel cover water outlet has a connecting pipe extending downwards from the corresponding communication port. The connecting pipe is tightly inserted into the upper pipe opening, so that the steel cover water outlet and the water inlet pipe form a detachable connection.

4. The inlet valve core according to claim 2, characterized in that: The steel cover water outlet includes a steel cover base and a steel cover. The steel cover is tightly fitted onto the upper side of the steel cover base, and the two together define the water inlet cavity. The steel cover is at least higher than the steel cover base, and multiple water outlet holes are opened circumferentially on the higher part.

5. The inlet valve core according to claim 4, characterized in that: The backflow prevention device includes a first steel ball. The steel cover seat has an open steel ball placement groove with an inclined bottom facing the communication port. The first steel ball is freely placed in the steel ball placement groove and, guided by the inclined bottom and by its own weight, blocks the communication port. Alternatively, a sealing spring is provided between the first steel ball and the steel cover or steel cover seat, and the first steel ball is blocked at the communication port by the elastic potential energy of the sealing spring.

6. The inlet valve core according to claim 2, characterized in that: The bottom surface of the steel cover water outlet is provided with an annular groove along the outer periphery of the connecting port, and an elastic sealing ring is embedded in the annular groove. The top surface of the water inlet pipe is pressed against the elastic sealing ring.

7. The inlet valve core according to claim 1, characterized in that: The first branch pipe and the second branch pipe are both integrally formed from the side wall of the water inlet pipe in the same direction; the first branch pipe and the second branch pipe are arranged parallel to each other and perpendicular to each other with respect to the water inlet pipe; the main pipe sections of the first branch pipe and the second branch pipe are also integrally connected by a connecting plate.

8. The inlet valve core according to claim 1, characterized in that: The lower tube cavity is also provided with a one-way valve core; the one-way valve core includes a return spring, a second steel ball and a leak-proof sleeve arranged from top to bottom, and the second steel ball is sealed against the leak-proof sleeve by the return spring.

9. A thermostat, comprising an upper connector and a metal bracket disposed on the upper side of the upper connector, wherein the upper connector is provided with conductive lines, the conductive lines including an anti-dry-burning switch, and the metal bracket is provided with an anti-dry-burning device that engages with the anti-dry-burning switch, characterized in that: The upper connecting seat has a central assembly channel, and the water inlet valve core according to any one of claims 1-8 is installed in the central assembly channel.

10. A temperature controller according to claim 9, characterized in that: The metal bracket has a central clearance opening corresponding to the water inlet pipe, and the metal bracket has a supporting step surface along the outer periphery of the central clearance opening; the side wall of the steel cover water outlet has a limiting ring that abuts against the supporting step surface.

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