CN218672655U

CN218672655U - Constant temperature device and electric water heater

Info

Publication number: CN218672655U
Application number: CN202222057623.5U
Authority: CN
Inventors: 赵龙; 赵小勇; 王孟菲; 李勇; 马腾
Original assignee: Haier Smart Home Co Ltd; Qingdao Economic and Technological Development Zone Haier Water Heater Co Ltd
Current assignee: Haier Smart Home Co Ltd; Qingdao Economic and Technological Development Zone Haier Water Heater Co Ltd
Priority date: 2022-08-05
Filing date: 2022-08-05
Publication date: 2023-03-21
Anticipated expiration: 2032-08-05

Abstract

The utility model discloses a constant temperature equipment and electric water heater. The thermostat device includes: the valve body is provided with a water outlet, a first water inlet, a second water inlet and a mounting opening, the valve body is also provided with a first connecting pipe, one side of the first connecting pipe is provided with a second connecting pipe, the other side of the first connecting pipe is provided with a connecting channel, a partition plate is arranged in the connecting channel, and the partition plate divides the connecting channel into a first sub-channel and a second sub-channel; the automatic temperature adjusting assembly is arranged on the mounting opening and is configured to adjust the opening degree of the second water inlet according to the temperature of the water outlet; the pipe wall of the auxiliary connecting pipe is provided with an annular water tank, the pipe wall of the auxiliary connecting pipe is also provided with two first sealing rings, and the annular water tank is positioned between the two first sealing rings. The compact design of the whole structure of the constant temperature device is realized, so that the whole volume is reduced.

Description

Constant temperature device and electric water heater

Technical Field

The utility model belongs to the technical field of domestic appliance, especially, relate to a constant temperature equipment and electric water heater.

Background

At present, an electric water heater is a household appliance commonly used in daily life of people. An electric water heater is generally provided with a water tank and an electric heating pipe arranged in the water tank, and the water in the water tank is heated after the electric heating pipe of a motor is electrified. Meanwhile, the water tank is connected with a water inlet pipe and a water outlet pipe, cold water enters the water tank through the water inlet pipe, and hot water in the water tank is output from the water outlet pipe.

In order to output hot water at a constant temperature, a thermostat is usually provided to control the temperature of the water in the prior art electric water heater. Chinese patent publication No. CN216557697U discloses an anti-scald module and an electric water heater, which adopts an automatic temperature adjusting component to automatically control the mixing proportion of hot and cold water so as to achieve the effect of constant temperature water outlet and anti-scald.

However, in order to satisfy the bypass of the cold water flowing into the inside, a connecting flow passage needs to be added to the pipe body facing away from the hot water inlet so that the cold water delivered from the pipe body of the cold water inlet flows into the cold water chamber through the flow passage. However, the overall size is increased due to the additional flow passages. Therefore, how to design a technology with a compact structure to reduce the overall volume is the technical problem to be solved by the present invention.

SUMMERY OF THE UTILITY MODEL

The utility model provides a constant temperature equipment and electric water heater realizes the design of constant temperature equipment overall structure compactification to reduce whole volume.

In order to achieve the technical purpose, the utility model adopts the following technical scheme:

in one aspect, the present invention provides a thermostat device, comprising:

the valve body is provided with a water outlet, a first water inlet, a second water inlet and a mounting port, the first water inlet and the second water inlet are arranged on the valve body side by side, the valve body is also provided with a first connecting pipe, one side of the first connecting pipe is provided with a second connecting pipe, the other side of the first connecting pipe is provided with a connecting channel, a partition plate is arranged in the connecting channel, and the partition plate divides the connecting channel into a first sub-channel and a second sub-channel;

the automatic temperature adjusting assembly is arranged on the mounting opening and is configured to adjust the opening degree of the second water inlet according to the temperature of the water outlet;

the pipe wall of the auxiliary connecting pipe is provided with an annular water tank, the pipe wall of the auxiliary connecting pipe is also provided with two first sealing rings, and the annular water tank is positioned between the two first sealing rings;

the auxiliary connecting pipe is inserted into the first connecting pipe and is communicated with the first water inlet through the first sub-channel, and the second connecting pipe is communicated with the second water inlet through the annular water tank and the second sub-channel in sequence.

In an embodiment of the present application, a first through hole, a second through hole, and a third through hole are formed in a side wall of the first connecting pipe, wherein the first through hole and the second through hole are arranged oppositely, and the second through hole and the third through hole are arranged side by side along an axis of the first connecting pipe;

the second connecting pipe is communicated with the first through hole, the first sub-channel is communicated with the second through hole, and the second sub-channel is communicated with the third through hole; the annular water tank is located between the first through hole and the second through hole.

In one embodiment of the application, one end of the valve body is provided with the mounting opening, and the other end of the valve body is of a closed structure.

In this application embodiment, be provided with on the lateral wall of valve body the delivery port first water inlet the second water inlet, first water inlet with the second water inlet is arranged and is being close to one side of first connecting pipe, the delivery port dorsad first connecting pipe sets up.

In one embodiment of the application, the automatic temperature adjusting assembly comprises a plunger, a sealing plug, a temperature sensing component, a positioning component and a driving component, wherein a fixing hole and at least one through hole are formed in the plunger, the through hole is located on one side of the fixing hole, the temperature sensing component comprises a cylinder body and a push rod, the push rod is inserted into the cylinder body, a temperature sensing cavity is formed between the push rod and the inside of the cylinder body, a thermal expansion and cold contraction material is filled in the temperature sensing cavity, the cylinder body is arranged in the fixing hole, the positioning component is arranged between the push rod and the sealing plug, and the driving component is used for driving the positioning component to move relative to the sealing plug;

the sealing plug is arranged on the mounting opening, the plunger is slidably and hermetically arranged in the valve body, the cylinder body is located in a flow path between the first water inlet and the water outlet, the thermal expansion and cold contraction material is used for driving the push rod to move by depending on the change of the temperature of water, and the push rod is used for driving the plunger to slide so as to control the switch of the second water inlet.

In one embodiment of the application, the sealing plug is provided with a slidable sliding block, a screw rod is arranged on the sliding block, a rotatable rotating shaft is arranged on the sealing plug, a threaded hole is formed in the inner end part of the rotating shaft, the screw rod is in threaded connection with the threaded hole, the outer end part of the rotating shaft is connected with the driving part, and the positioning part is arranged on the sliding block.

In one embodiment of the application, an installation groove is formed in the sliding block, the positioning part is slidably arranged in the installation groove, and a return spring is further arranged between the positioning part and the installation groove.

In this application embodiment, the outer ring of plunger is provided with the second sealing washer, the second sealing washer clamp in the plunger with between the inner wall of valve body, the second sealing washer is located first water inlet with between the second water inlet.

In an embodiment of the application, the automatic temperature adjustment assembly comprises an installation sleeve and an elastic reset part, the outer wall of the installation sleeve is provided with a hollow structure, the cylinder body is arranged in the installation sleeve, and the elastic reset part is used for aligning the plunger or the cylinder body applies an orientation to the elastic force of the sealing plug direction.

In another aspect, the utility model also provides an electric water heater, which comprises a water tank, wherein the water tank is provided with a water inlet pipe and a water outlet pipe, the water inlet pipe is provided with a tee joint, and the electric water heater also comprises the constant temperature device; and a first connecting pipe of the constant temperature device is connected with the water outlet pipe, and a second connecting pipe of the constant temperature device is connected with the tee joint.

Compared with the prior art, the utility model discloses an advantage is with positive effect: through be provided with second connecting pipe and interface channel respectively in the both sides of first connecting pipe, simultaneously, dispose supplementary connecting pipe in the first connecting pipe, utilize supplementary connecting pipe to carry hot water, and the annular basin that forms on the supplementary connecting pipe outer wall supplies cold water to flow through, like this, alright come independent transport hot and cold water through two subchannels with the realization, because second connecting pipe and interface channel distribute in the both sides of first connecting pipe, arrange the rivers flow path with the space of abundant utilization first connecting pipe both sides, realize the design of constant temperature equipment overall structure compactification, in order to reduce whole volume.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive labor.

Fig. 1 is a schematic structural view of an embodiment of the thermostat of the present invention;

fig. 2 is a sectional view of an embodiment of the thermostat of the present invention;

fig. 3 is an exploded view of an embodiment of the thermostat of the present invention;

FIG. 4 is one of the schematic structural views of the valve body of FIG. 1;

FIG. 5 is a second schematic structural view of the valve body of FIG. 1;

FIG. 6 is a cross-sectional view of the valve body of FIG. 1

Fig. 7 is a schematic structural view of the plunger in fig. 1.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

It should be noted that in the description of the present invention, the terms of direction or positional relationship indicated by the terms "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, which are merely for convenience of description, and do not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly, e.g., as meaning fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those of ordinary skill in the art.

In the present application, unless expressly stated or limited otherwise, the recitation of a first feature "on" or "under" a second feature may include the recitation of the first and second features being in direct contact, and may also include the recitation of the first and second features not being in direct contact, but being in contact with another feature between them. Also, the first feature "on," "above" and "over" the second feature may include the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is at a higher level than the second feature. "beneath," "under" and "beneath" a first feature includes the first feature being directly beneath and obliquely beneath the second feature, or simply indicating that the first feature is at a lesser elevation than the second feature.

The following disclosure provides many different embodiments or examples for implementing different features of the invention. In order to simplify the disclosure of the present invention, the components and arrangements of specific examples are described below. Of course, they are merely examples and are not intended to limit the present invention. Furthermore, the present invention may repeat reference numerals and/or reference letters in the various examples, which have been repeated for purposes of simplicity and clarity and do not in themselves dictate a relationship between the various embodiments and/or arrangements discussed. In addition, the present disclosure provides examples of various specific processes and materials, but one of ordinary skill in the art may recognize applications of other processes and/or use of other materials.

As shown in fig. 1-7, the present embodiment provides a thermostatic device, which is installed on a water outlet pipe of a water tank in an electric water heater to achieve the purpose of discharging water at a constant temperature.

The constant temperature device includes: the hot water supply valve comprises a valve body 1, wherein a water outlet 11, a mounting port 12, a first water inlet 13 and a second water inlet 14 are formed in the valve body 1, a first connecting pipe 2 and a second connecting pipe 3 are arranged on the valve body 1, the first connecting pipe 2 is used for conveying hot water to the first water inlet 13, and the second connecting pipe 3 is used for conveying cold water to the second water inlet 14. The thermostat device further includes: a thermostat assembly 4 and an auxiliary nozzle 5. The automatic temperature adjusting assembly is arranged on the mounting opening and is configured to adjust the opening degree of the second water inlet according to the temperature of the water outlet, and the auxiliary connecting pipe 5 is inserted into the first connecting pipe and is connected with a water outlet pipe of the water heater in an auxiliary mode.

In an embodiment of the present application, in order to make the overall structure more compact, the overall volume is reduced. Arranging the second connecting pipe at one side of the first connecting pipe, arranging a connecting channel 6 at the other side of the first connecting pipe, arranging a partition plate 61 in the connecting channel 6, and dividing the connecting channel 6 into a first sub-channel 62 and a second sub-channel 63 by the partition plate 61; an annular water tank 51 is arranged on the pipe wall of the auxiliary connecting pipe, two first sealing rings 52 are further arranged on the pipe wall of the auxiliary connecting pipe, and the annular water tank 51 is positioned between the two first sealing rings 52; wherein the auxiliary connection pipe is inserted in the first connection pipe and is communicated with the first water inlet through a first sub-passage 62, and the second connection pipe is communicated with the second water inlet through an annular water tank 51 and a second sub-passage 63 in sequence.

In particular, during use, the second connecting pipe is connected to a water pipe for conveying cold water, and the auxiliary connecting pipe is connected to a water outlet pipe of the water heater.

The automatic temperature adjusting assembly is arranged on the valve body and adjusts the opening degree of the second water inlet according to the water outlet temperature of the water outlet, and further adjusts the proportion of cold water and hot water so as to achieve the purpose of constant-temperature water outlet. With respect to the specific structure of the thermostat assembly and the specific manner of adjusting the ratio of hot water to cold water, reference is made to conventional technologies without limitation.

During the water consumption process of the user, the hot water input by the auxiliary connecting pipe flows into the first water inlet via the first sub-channel 62, and the hot water is output from the water outlet.

The automatic temperature adjusting assembly adjusts the opening degree of the second water inlet according to the water temperature of the water outlet, and when the second water inlet is opened, cold water input from the second connecting pipe firstly enters the first connecting pipe and is limited between the two first sealing rings 52, and the cold water flows into the second sub-channel 63 through the annular water tank 51 and is finally conveyed to the second water inlet, so that the cold water and the hot water can be mixed to realize constant-temperature water outlet.

In the case of the valve body, the second connection pipe and the connection passage 6 are installed and arranged by making full use of the space on both sides of the first connection pipe, and the cold water flows through the inner space by means of the first connection pipe, so that the overall structure is more compact.

In one embodiment, a side wall of the first connecting pipe is provided with a first through hole 21, a second through hole 22 and a third through hole 23, wherein the first through hole 21 and the second through hole 22 are oppositely arranged, and the second through hole 22 and the third through hole 23 are arranged side by side along the axis of the first connecting pipe;

wherein the second connecting pipe is communicated with the first through hole 21, the first sub-channel 62 is communicated with the second through hole 22, and the second sub-channel 63 is communicated with the third through hole 23; the annular water tank 51 is located between the first through-hole 21 and the second through-hole 22.

Specifically, in order to facilitate connection between the second connecting pipe and the connecting channel 6 and the first connecting pipe, a plurality of through holes are formed in the pipe wall of the first connecting pipe, and the second connecting pipe is integrated on the first connecting pipe and connected with the first connecting pipe through the first through hole 21. Similarly, the connecting channel 6 is connected to the sub-channels in the connecting channel 6 via the second through hole 22 and the third through hole 23.

In one embodiment, one end of the valve body is provided with the mounting port, and the other end of the valve body is of a closed structure. The side wall of the valve body is provided with the water outlet, the first water inlet and the second water inlet are arranged on one side close to the first connecting pipe, and the water outlet is arranged back to the first connecting pipe.

Specifically, by adopting the arrangement mode, the first connecting pipe and the second connecting pipe can be conveniently connected with the water heater and the cold water pipe, and the water outlet is arranged back to the first connecting pipe, so that the water outlet is arranged towards the lower part or the front part of the water heater when in use, and a water using terminal is more conveniently connected.

In another embodiment of the application, the thermostatic device is installed on the water heater for convenience, so that the use universality of the thermostatic device is improved.

The end face of one end part of the auxiliary connecting pipe is provided with an outlet, the side part of the other end part of the auxiliary connecting pipe is provided with an inlet, the side part of the other end part of the auxiliary connecting pipe is also provided with an annular groove 53 and a positioning plate 54, and the positioning plate 54 is positioned between the annular groove 53 and the outlet

The auxiliary connection pipe is inserted into the first connection pipe, the positioning plate 54 abuts against an end face of the first connection pipe, and the screw 50 is screwed into the threaded hole and inserted into the annular groove 53.

Specifically, the first connecting pipe needs to be connected with a water outlet pipe of the water heater, and is limited by the installation position and space of the water heater, and during actual installation, the first connecting pipe needs to be adjusted according to the installation positions of the water heaters in different families.

The first connecting pipe is connected with a water outlet pipe of the water heater through the auxiliary connecting pipe, and in the installation process, the first connecting pipe rotates by a certain angle through the auxiliary connecting pipe and is connected with the water outlet pipe of the water heater through an inlet at the side part.

During actual assembly, the screw 50 is loosened to enable the auxiliary connection pipe to rotate in the first connection pipe, the angle of the auxiliary connection pipe is rotated to match the water outlet pipe of the water heater, and then the screw 50 is tightened to lock the auxiliary connection pipe.

In one embodiment, one side wall of the annular recess 53 is an inclined surface 531, the inclined surface 531 is far away from the positioning plate 54, and the screw 50 abuts against the inclined surface 531.

Specifically, in order to more securely and reliably lock the auxiliary adapter by the screw 50, the groove side wall of the annular recess 53 away from the positioning plate 54 is provided with an inclined surface 531, so that the screw 50 abuts against the inclined surface 531 during the tightening of the screw 50, and the auxiliary adapter can be gradually assembled in place.

In some embodiments, the first connecting pipe is provided with a plurality of threaded holes, and each threaded hole is screwed with a screw 50.

Specifically, the plurality of screws 50 can apply pressure to the inclined surface 531, so that the auxiliary adapter is more securely and reliably mounted in the first adapter.

In another embodiment, the positioning plate 54 surrounds the outer circumference of the auxiliary adapter, and the two sides of the positioning plate 54 are respectively provided with a straight portion 541.

Specifically, by arranging the flat portion 541 on the positioning plate 54, in the assembling process, the operator can adjust the angle of the auxiliary connection pipe by clamping the tool such as a wrench on the flat portion 541, so that the operator can install and use the auxiliary connection pipe conveniently.

Based on the above technical solution, optionally, there are multiple ways for the thermostat assembly to represent entities, and the following description is made with reference to the accompanying drawings.

The automatic temperature adjusting assembly 4 comprises a plunger 41, a sealing plug 42, a temperature sensing part 43 and a positioning part 422, wherein the plunger 41 is provided with a fixing hole 411 and at least one through hole 412, the through hole 412 is positioned at one side of the fixing hole 411, the temperature sensing part 43 comprises a cylinder 431 and a push rod 432, the push rod 432 is inserted into the cylinder 431, a temperature sensing cavity is formed between the push rod 432 and the inside of the cylinder 431, the temperature sensing cavity is filled with a thermal expansion and contraction material (not shown), and the cylinder 431 is arranged in the fixing hole 411;

the sealing plug 42 is arranged on the mounting hole 12, the plunger 41 is slidably and hermetically arranged in the valve body 1, a cold water cavity is formed between the plunger 41 and the sealing plug 42 inside the valve body 1, and the push rod 432 is arranged opposite to the positioning component 422; the cylinder 431 is located in a flow path between the first water inlet 13 and the water outlet 11, the thermal expansion and contraction material is used for driving the push rod 432 to move by means of temperature change of water flowing between the first water inlet 13 and the water outlet 11, and the push rod 432 is used for matching with the positioning component 422 to drive the plunger 41 to slide so as to control the second water inlet 14 to selectively communicate with the cold water cavity and adjust the opening degree of the second water inlet.

Specifically, the valve body 1 in this embodiment is provided with the automatic temperature adjustment assembly 4, so as to automatically adjust the outlet water temperature of the water outlet 11 through the automatic temperature adjustment assembly 4, so as to realize constant temperature outlet water.

In actual use, the first connecting pipe 2 is used for feeding hot water, and the second connecting pipe 3 is used for feeding cold water. Hot water enters the valve body 1 and is output through the water outlet 11, and the cold water in the second connecting pipe 3 is controlled by the automatic temperature adjusting assembly 4.

The method specifically comprises the following steps: when the outlet water temperature of the water outlet 11 is too high, the thermal expansion and contraction material in the cylinder 431 of the temperature sensing component 43 expands and makes the push rod 432 abut against the sealing plug 42. The push rod 432 pushes the cylinder 431 to drive the plunger 41 to move towards a direction away from the sealing plug 42 by using the force generated by the thermal expansion and contraction material, so that the second water inlet 14 arranged on the valve body 1 is communicated with the cold water cavity formed inside the valve body.

At this time, the cold water introduced by the second connection pipe 3 enters the cold water chamber, and the cold water flows out through the through hole 412 and is mixed with the hot water flowing in from the first water inlet 13, and finally, the outlet temperature of the water outlet 11 is reduced, thereby preventing the user from being scalded.

And the volume of the automatic temperature adjusting component 4 changes according to the temperature change by means of the expansion and contraction material so as to control the push rod 432 to move, and further control the second water inlet 14 to be selectively communicated with the cold water cavity.

In some embodiments, the choice of the expansion/contraction material may be made by using paraffin wax for temperature control in the conventional technology, for example, paraffin wax filling material in a paraffin wax temperature controller may be used, and the specific component ratio of the paraffin wax filling material is not limited herein.

In other embodiments, in order to achieve effective temperature control within a set temperature range, the push rod 432 of the thermostat assembly 4 is disposed at a certain distance from the positioning component 422 in the initial state, so as to achieve more accurate temperature control within a certain temperature range.

For example: when the temperature of the outlet water of the water outlet 11 is lower than the first set temperature T1, a gap is formed between the free end of the push rod 432 and the positioning component 422; when the temperature of the outlet water of the water outlet 11 is higher than the second set temperature T2, the free end of the push rod 432 abuts against the positioning member 422.

Specifically, the temperature value of T2 is greater than the temperature value of T1, and in the process of outputting hot water to the outside from the water outlet 11 of the valve body 1, when the water temperature is lower than T1, the push rod 432 is in a completely retracted state, and after the water temperature of the water outlet 11 is greater than T1, the push rod 432 gradually extends out relative to the cylinder 431 under the action of the thermal expansion and cold contraction material, and before the water temperature of the water outlet 11 does not reach T2, the plunger 41 is in an immovable state to keep the second water inlet 14 disconnected from the cold water cavity. Therefore, the hot water can be ensured to be used by the user within the set temperature range, and further the phenomenon that the temperature of the water used by the user is too low due to the fact that cold water is added under the condition that the temperature of the hot water is not high is avoided.

In the practical application process, the values of T1 and T2 are not limited, and T2 is used as a temperature trigger value for triggering and using cold water to mix so as to avoid scalding the user according to the temperature required by the hot water using requirements of the user under different conditions.

In another embodiment, in order to prevent the water entering the first connection pipe 2 and the second connection pipe 3 from affecting each other, the thermostat assembly 4 further includes: and a second sealing ring 44, wherein the second sealing ring 44 is sleeved on the plunger 41 and is clamped between the plunger 41 and the inner pipe wall of the valve body 1, and the second sealing ring 44 is positioned between the first water inlet 13 and the second water inlet 14.

Specifically, after the plunger 41 is inserted into the valve body 1, the second sealing ring 44 is tightly attached to the inner wall of the valve body 1, and the first water inlet 13 and the second water inlet 14 are spaced apart by the second sealing ring 44, so as to prevent hot and cold water entering from the first water inlet 13 and the second water inlet 14 from interfering with each other.

In some embodiments, the thermostat assembly 4 further includes a resilient return member 45, and the resilient return member 45 is used to apply a resilient force to the plunger 41 or the cylinder 431 in a direction toward the sealing plug 42.

Specifically, when the temperature of water in the valve body 1 is high, the push rod 432 extends out and abuts against the sealing plug 42 to drive the plunger 41 to move, so that the second water inlet 14 is communicated with the cold water cavity. When the temperature of the water in the valve body 1 is lowered, in order to avoid the over-low temperature of the water at the water outlet 11, the waterway between the second water inlet 14 and the cold water cavity needs to be timely reduced or cut off.

By configuring the elastic resetting member 45, when the push rod 432 retracts by using the elastic force exerted by the elastic resetting member 45, the elastic resetting member 45 can drive the plunger 41 to reset, thereby reducing or cutting off the water path between the second water inlet 14 and the cold water chamber.

In one embodiment, the elastic restoring member 45 may be a spring or a leaf spring. Taking a spring as an example, the spring is located in the valve body 1, one end of the spring abuts against the plunger 41 or the cylinder 431, and the other end of the spring abuts against the valve body 1. Taking the example of the spring abutting against the cylinder 431, the spring can apply a spring force to the cylinder 431, and the direction of the spring force is toward the sealing plug 42. In order to facilitate installation of the elastic resetting part 45, a mounting sleeve 47 may be further configured, a circumferential surface of the mounting sleeve 47 is a hollow structure, the mounting sleeve 47 is inserted into the valve body 1 through the mounting opening 11, the elastic resetting part 45 is inserted into the mounting sleeve 47, and the mounting sleeve 47 assists in installation of the elastic resetting part 45.

Wherein, a mounting groove (not shown) is arranged in the slide block, the positioning component is slidably arranged in the mounting groove, and a return spring 48 is further arranged between the positioning component and the mounting groove. Specifically, after the push rod 432 in the temperature sensing part 43 extends and abuts against the positioning part 422, when the positioning part 422 is stressed too much, the buffer can be further performed by compressing the return spring 48, so as to improve the use reliability.

When the temperature of the water outlet 11 is higher than T2 and the hot and cold water needs to be mixed, the push rod 432 abuts against the sealing plug 42 to drive the cylinder 431 and the plunger 41 to move, so as to compress the spring. And under the condition that the temperature of the water outlet 11 is lower than T2, the push rod 432 retracts, and the spring drives the cylinder 431 to drive the plunger 41 to move reversely and reset, so that the flow path between the second water inlet 14 and the cold water cavity is cut off.

In addition, a guide post 433 extending in a direction away from the sealing plug 42 may be further disposed on the cylinder 431, the spring is sleeved on the guide post 433, and the guide post 433 can support and shape the spring, so that the posture of the spring is not inclined when the spring is compressed, and the assembling reliability is improved.

In a preferred embodiment, for example, to more reliably control the on/off of the flow path between the second water inlet 14 and the cold water chamber through the plunger 41, the sealing plug 42 is provided with a first retaining ring 421, one end surface of the plunger 41 is provided with a second retaining ring 413, and the second retaining ring 413 surrounds the outside of the through hole 412; after the first retaining ring 421 abuts against the second retaining ring 413, the edge of the first retaining ring 421 and the edge of the second retaining ring 413 cooperate with each other to form a sealing water blocking surface.

Specifically, when the flow path between the second water inlet 14 and the cold water cavity needs to be cut off, after the first retaining ring 421 abuts against the second retaining ring 413, a connection portion formed between the first retaining ring 421 and the second retaining ring 413 forms a sealed water blocking surface, so as to cut off the flow path between the second water inlet 14 and the cold water cavity.

When the cold water and the hot water entering through the second water inlet 14 are required to be mixed, the plunger 41 moves to make the second retainer ring 413 far away from the first retainer ring 421, so that the flow path between the second water inlet 14 and the cold water cavity is conducted.

In some embodiments, the position of the positioning member 422 is adjusted for convenience of the drive member. The sealing plug is provided with a slidable sliding block 423, the sliding block is provided with a screw rod 424, the sealing plug is provided with a rotatable rotating shaft 425, the inner end part of the rotating shaft is provided with a threaded hole (not shown), the screw rod is in threaded connection with the threaded hole, the outer end part of the rotating shaft is connected with the driving component, and the positioning component is arranged on the sliding block. The thermostat assembly 4 further comprises a drive member 46, the drive member 46 being adapted to drive said screw

Specifically, the driving part rotates to drive the rotating shaft 425 to rotate, the screw rod 424 and the threaded hole 426 drive the sliding block 423 to move in the sealing plug, and then the initial distance between the positioning part 422 and the push rod 432 is adjusted, so that the adjustment of the outlet water temperature is realized.

The invention also provides a water heater, which comprises a water tank, a thermostatic device and a water tank, wherein the water tank is provided with a water inlet pipe and a water outlet pipe; and a first connecting pipe of the thermostatic device is connected with the water outlet pipe, and a second connecting pipe of the thermostatic device is connected with the tee joint.

The specific structural form of the water heater is not limited, hot water output after being heated in the water tank enters the thermostatic device through the water outlet pipe, similarly, cold water of the water inlet pipe is connected with an external water supply source through the tee joint, and meanwhile, the cold water can be shunted to the connecting water pipe through the tee joint to be mixed with water in the thermostatic device so as to achieve the purpose of preventing scalding.

The above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or that equivalents may be substituted for elements thereof; such modifications and substitutions do not depart from the spirit and scope of the present invention, which is claimed.

Claims

1. A thermostatic device, characterized by comprising:

the auxiliary connecting pipe is inserted into the first connecting pipe and communicated with the first water inlet through the first sub-channel, and the second connecting pipe is communicated with the second water inlet through the annular water tank and the second sub-channel in sequence.

2. The thermostat device according to claim 1, wherein a side wall of the first connecting pipe is provided with a first through hole, a second through hole, and a third through hole, wherein the first through hole and the second through hole are arranged oppositely, and the second through hole and the third through hole are arranged side by side along an axis of the first connecting pipe;

3. A thermostat device according to claim 1, wherein one end portion of the valve body is provided with the mounting port, and the other end portion of the valve body is of a closed structure.

4. The thermostat device as claimed in claim 1, wherein the side wall of the valve body is provided with the water outlet, the first water inlet, and the second water inlet, the first water inlet and the second water inlet are disposed at a side close to the first connecting pipe, and the water outlet is disposed facing away from the first connecting pipe.

5. The constant temperature device according to any one of claims 1 to 4, wherein the automatic temperature adjusting assembly comprises a plunger, a sealing plug, a temperature sensing component, a positioning component and a driving component, the plunger is provided with a fixing hole and at least one through hole, the through hole is positioned on one side of the fixing hole, the temperature sensing component comprises a cylinder body and a push rod, the push rod is inserted into the cylinder body, a temperature sensing cavity is formed between the push rod and the inside of the cylinder body, the temperature sensing cavity is filled with a thermal expansion and contraction material, the cylinder body is arranged in the fixing hole, the positioning component is arranged between the push rod and the sealing plug, and the driving component is used for driving the positioning component to move relative to the sealing plug;

6. The thermostat device as claimed in claim 5, wherein the sealing plug is provided with a slidable slider, the slider is provided with a screw, the sealing plug is provided with a rotatable rotating shaft, the inner end of the rotating shaft is provided with a threaded hole, the screw is in threaded connection with the threaded hole, the outer end of the rotating shaft is connected with the driving part, and the positioning part is arranged on the slider.

7. A thermostat according to claim 6, wherein a mounting groove is provided in the slider, the positioning member is slidably disposed in the mounting groove, and a return spring is further provided between the positioning member and the mounting groove.

8. A thermostatic device according to claim 5, wherein an outer peripheral ring of the plunger is provided with a second sealing ring sandwiched between the plunger and an inner wall of the valve body, the second sealing ring being located between the first and second water inlets.

9. The constant temperature device as claimed in claim 5, wherein the automatic temperature adjusting assembly comprises a mounting sleeve and an elastic resetting component, the outer wall of the mounting sleeve is provided with a hollowed structure, the cylinder body is arranged in the mounting sleeve, and the elastic resetting component is used for applying elastic force to the plunger or the cylinder body towards the direction of the sealing plug.

10. An electric water heater comprising a water tank having an inlet pipe and an outlet pipe, the inlet pipe being provided with a tee, characterized by further comprising a thermostatic device according to any one of claims 1-9; and a first connecting pipe of the constant temperature device is connected with the water outlet pipe, and a second connecting pipe of the constant temperature device is connected with the tee joint.