阅读说明：本技术 旁通恒温调节阀及包含其的燃气热水器 (Bypass constant-temperature regulating valve and gas water heater comprising same ) 是由 段裘铭 金晶 梁稳 周高云 王启栋 方思思 柯建辉 于 2019-09-30 设计创作，主要内容包括：本发明公开了一种旁通恒温调节阀及包含其的燃气热水器。该旁通恒温调节阀包括：壳体和设于壳体内部的阀座、记忆合金弹簧、弹性件、阀芯、柔性密封件；壳体设有冷水入口、热水入口、热水出口；阀座相对于壳体固定；阀芯为中空的筒形构件,阀芯的第一端通过柔性密封件与冷水入口连接阀芯的第二端面对阀座设置；记忆合金弹簧偏压阀芯以使得阀芯朝向第一方向运动；弹性件偏压阀芯以使得阀芯朝向第二方向运动。该旁通恒温调节阀采用了记忆合金弹簧,可以根据流经的热水的温度调节冷水的进水量,从而调节流出的混合水的温度,避免流出的混合水的温度过高或过低。该燃气热水器可以调节出水温度,防止出水温度骤升或骤降。(The invention discloses a bypass constant-temperature regulating valve and a gas water heater comprising the same. This bypass thermostatic control valve includes: the valve comprises a shell, a valve seat, a memory alloy spring, an elastic piece, a valve core and a flexible sealing piece, wherein the valve seat, the memory alloy spring, the elastic piece, the valve core and the flexible sealing piece are arranged in the shell; the shell is provided with a cold water inlet, a hot water inlet and a hot water outlet; the valve seat is fixed relative to the shell; the valve core is a hollow cylindrical component, and a first end of the valve core is connected with a second end of the valve core through a flexible sealing piece and a cold water inlet, and the second end of the valve core is arranged opposite to the valve seat; the memory alloy spring biases the valve core to move the valve core towards a first direction; the resilient member biases the valve element to move the valve element in the second direction. The bypass constant-temperature regulating valve adopts the memory alloy spring, and can regulate the water inflow of cold water according to the temperature of flowing hot water, so that the temperature of the flowing mixed water is regulated, and the over-high or over-low temperature of the flowing mixed water is avoided. The gas water heater can adjust the water outlet temperature and prevent the water outlet temperature from suddenly rising or dropping.)

1. A bypass thermostatic regulating valve, characterized in that it includes: the valve comprises a shell, a valve seat, a memory alloy spring, an elastic piece, a valve core and a flexible sealing piece, wherein the valve seat, the memory alloy spring, the elastic piece, the valve core and the flexible sealing piece are arranged in the shell;

the shell is provided with a cold water inlet, a hot water inlet and a hot water outlet;

the valve seat is fixed relative to the housing;

the valve core is a hollow cylindrical member, a first end of the valve core is connected with the cold water inlet through the flexible sealing piece so that cold water can only pass through the inner part of the valve core, and a second end of the valve core is arranged opposite to the valve seat;

the memory alloy spring biases the valve element to move the valve element in a first direction;

the elastic member biases the valve core to move towards a second direction;

the first direction is a direction in which the valve element is far away from the valve seat, and the second direction is opposite to the first direction.

2. The bypass thermostatic regulating valve of claim 1, wherein the valve seat is of cylindrical configuration, the end of the valve seat adjacent the valve spool being sharpened.

3. The bypass thermostatic regulating valve of claim 2, wherein said memory alloy spring is nested in said valve seat.

4. The bypass thermostatic control valve of claim 1, wherein the housing includes a hot water line and a cold water line connected to the hot water line, the memory alloy spring disposed within the hot water line.

5. The bypass thermostatic regulating valve according to claim 1, wherein an abutting portion is provided on an outer peripheral surface of said valve body, and said memory alloy spring and said elastic body are abutted against said abutting portion.

6. The bypass thermostatic regulating valve of claim 1, wherein the flexible seal is a membrane.

7. The bypass thermostatic regulating valve of claim 6, wherein the housing comprises a hot water pipe and a cold water pipe connected to the hot water pipe, an inner wall of the cold water pipe is provided with an annular protrusion, one end of the flexible sealing member is connected to the annular protrusion, and the other end of the flexible sealing member is connected to the first end of the valve core.

8. The bypass thermostatic regulating valve according to claim 7, wherein an abutting portion is provided on an outer peripheral surface of the valve body, one end of the elastic member abuts against the abutting portion, and the other end of the elastic member abuts against the annular projecting portion.

9. The bypass thermostatic regulating valve of claim 1, wherein the resilient member is a spring.

10. A gas water heater, characterized in that a bypass thermostatic regulating valve according to any one of claims 1-9 is arranged in a water outlet pipeline of the gas water heater.

Technical Field

The invention relates to the field of machine manufacturing, in particular to a bypass constant-temperature regulating valve and a gas water heater comprising the same.

Background

The water outlet temperature of the existing gas water heater is adjusted by adjusting the heating amplitude, and users only can adjust the water outlet temperature through a water mixing valve of a water tap if the water outlet temperature needs to be adjusted again, however, the adjustment of the heating amplitude of the gas water heater has hysteresis, and when the user adjusts the hot water supply down, the inside of the gas water heater can correspondingly reduce the heating amplitude, namely reduce the firepower to avoid the water temperature from rising, but the heat exchanger can not be cooled down quickly, so the temperature of the outlet water of the gas water heater can be increased quickly in a short time, a user is easily scalded, and similarly, when the user adjusts the hot water supply, the heating amplitude of the interior of the gas water heater can be correspondingly increased, namely the firepower is increased to avoid the water temperature from dropping, however, the heat exchanger cannot be heated up quickly, so that the temperature of the outlet water of the gas water heater is still reduced quickly in a short time, and users are easy to freeze.

When the water yield of the existing gas water heater is adjusted by a user, the problem that the water temperature is suddenly cooled and suddenly heated can occur, so that the use experience of the user is extremely poor.

Disclosure of Invention

The invention aims to overcome the defects in the prior art and provides a bypass constant-temperature regulating valve and a gas water heater comprising the same.

The invention solves the technical problems through the following technical scheme:

a bypass thermostatic regulating valve, comprising: the valve comprises a shell, a valve seat, a memory alloy spring, an elastic piece, a valve core and a flexible sealing piece, wherein the valve seat, the memory alloy spring, the elastic piece, the valve core and the flexible sealing piece are arranged in the shell;

the shell is provided with a cold water inlet, a hot water inlet and a hot water outlet;

the valve seat is fixed relative to the shell;

the valve core is a hollow cylindrical component, a first end of the valve core is connected with the cold water inlet through a flexible sealing piece so that the cold water can only pass through the inner part of the valve core, and a second end of the valve core is arranged opposite to the valve seat;

the memory alloy spring biases the valve core to move the valve core towards a first direction;

the elastic element biases the valve core to move towards the second direction;

the first direction is the direction of the valve core away from the valve seat, and the second direction is opposite to the first direction.

Preferably, the valve seat is of a cylindrical structure, and the end of the valve seat close to the valve core is sharpened.

Preferably, the memory alloy spring is sleeved on the valve seat.

Preferably, the housing comprises a hot water pipe and a cold water pipe connected to the hot water pipe, and the memory alloy spring is arranged in the hot water pipe.

Preferably, the outer peripheral surface of the valve core is provided with an abutting part, and the memory alloy spring and the elastic body are abutted against the abutting part.

Preferably, the flexible seal is a membrane.

Preferably, the housing comprises a hot water pipe and a cold water pipe connected to the hot water pipe, an annular protrusion is disposed on an inner wall of the cold water pipe, one end of the flexible sealing member is connected to the annular protrusion, and the other end of the flexible sealing member is connected to the first end of the valve core.

Preferably, the outer peripheral surface of the valve element is provided with an abutting portion, one end of the elastic member abuts against the abutting portion, and the other end of the elastic member abuts against the annular protruding portion.

Preferably, the elastic member is a spring.

A water outlet pipeline of the gas water heater is provided with the bypass constant-temperature regulating valve.

The positive progress effects of the invention are as follows: the bypass constant-temperature regulating valve adopts the memory alloy spring, and can regulate the water inflow of cold water according to the temperature of flowing hot water, so that the temperature of the flowing mixed water is regulated, and the over-high or over-low temperature of the flowing mixed water is avoided. The gas water heater can adjust the water outlet temperature and prevent the water outlet temperature from suddenly rising or dropping.

Drawings

Fig. 1 is a schematic structural view of a gas water heater according to a preferred embodiment of the present invention.

Fig. 2 is another structural schematic view of a gas water heater according to a preferred embodiment of the present invention.

Fig. 3 is a schematic perspective view of a bypass thermostatic regulating valve according to a preferred embodiment of the present invention.

Fig. 4 is a schematic sectional view of a bypass thermostatic regulating valve according to a preferred embodiment of the present invention.

Description of reference numerals:

bypass thermostatic regulating valve 100

Casing 110

Hot water pipe 111

Cold water pipe 112

Hot water inlet 113

Hot water outlet 114

Cold water inlet 115

Valve seat 120

Convex ring 121

Memory alloy spring 130

Elastic member 140

Valve core 150

Abutting portion 151

Flexible seal 160

Annular protrusion 170

Gas water heater 200

Air inlet joint 201

Water inlet joint 202

Water outlet joint 203

Proportional valve assembly 204

Water valve assembly 205

Fan assembly 206

Combustor can 208

Electric controller assembly 209

Heat exchanger assembly 210

Gas collecting channel assembly 211

Water inlet pipe 301

Outlet conduit 302

First direction X

Second direction Y

Detailed Description

The present invention is further illustrated by way of example and not by way of limitation in the scope of the following examples in connection with the accompanying drawings.

As shown in fig. 1-2, the gas water heater 200 includes: the gas-fired boiler comprises an air inlet connector 201, a water inlet connector 202, a water outlet connector 203, a proportional valve assembly 204, a water quantity valve assembly 205, a fan assembly 206, a gas distributor 100, a combustion chamber box 208, an electric controller assembly 209, a heat exchanger assembly 210 and a gas collecting hood assembly 211.

The proportional valve assembly 204 is used for controlling the on-off of gas and the size of gas flow, the water quantity valve assembly 205 is used for detecting a water flow signal and transmitting the water flow signal to the electric controller assembly 209, the fan assembly 206 is used for controlling the air intake, the gas distributor 100 is used for distributing and adjusting the gas flow, the electric controller assembly 209 is used for detecting a signal and outputting a control signal to control the whole machine, the heat exchanger assembly 210 is used for absorbing the heat of the flue gas to heat cold water in the flue gas into hot water, and the gas collecting hood assembly 211 is used for discharging the flue gas.

Cold water enters from the water inlet connection 202 and flows through the heat exchanger assembly 210 and exits from the water outlet connection 203. The gas enters from the gas inlet connector 201, passes through the proportional valve assembly 204, enters the gas distribution chamber, is sprayed into the combustion chamber box 208 through the nozzle 123 of the gas distribution chamber, meanwhile, the fan component 206 conveys air to the interior of the combustion chamber box 208, the gas and the air are mixed and combusted in the interior of the combustion chamber box 208, the generated flue gas flows upwards and flows through the heat exchanger component 210, and finally the flue gas flows out from the gas collecting hood component 211.

The gas water heater 200 further includes: a water inlet pipe 301 and a water outlet pipe 302, wherein cold water flows through the water inlet pipe 301 to be heated in the gas water heater 200, and finally flows out through the water outlet pipe 302 to be supplied to a user.

The water outlet pipe 302 is provided with a bypass thermostatic regulating valve 100, and the bypass thermostatic regulating valve 100 is respectively communicated with the water outlet pipe 302 and the water inlet pipe 301.

As shown in fig. 3 to 4, the bypass thermostatic regulating valve 100 includes: the valve comprises a shell 110, a valve seat 120 arranged in the shell 110, a memory alloy spring 130, an elastic member 140, a valve core 150 and a flexible sealing member 160.

The case 110 includes a hot water pipe 111 and a cold water pipe 112 connected to the hot water pipe 111. The housing 110 is provided with a cold water inlet 115, a hot water inlet 113, and a hot water outlet 114. The cold water inlet 115 is disposed on the cold water pipe 112, the hot water inlet 113 and the hot water outlet 114 are respectively disposed on both ends of the hot water pipe 111, and the cold water pipe 112 and the hot water pipe 111 form a three-way structure.

The inlet pipe 301 is connected to the cold water inlet 115 and the hot water pipe 111 is connected to the outlet pipe 302.

The valve seat 120 is fixed relative to the housing 110.

In the present embodiment, the valve seat 120 has a cylindrical structure, and the end of the valve seat 120 close to the valve core 150 is sharpened. By sharpening the end, the valve seat 120 and the valve core 150 form a socket structure, and a gap between the valve seat 120 and the valve core 150 forms a flow passage for cold water. The present invention is not limited thereto and those skilled in the art can select other forms of valve seat 120 as desired.

The wall of the hot water pipe 111 is provided with an opening, and the valve seat 120 is fixed to the wall of the hot water pipe 111 through the opening, preferably, the valve seat 120 is fixed to the wall by screwing, but the present invention is not limited to this, and a person skilled in the art may select means such as laser welding and adhesion to fix the valve seat 120 to the wall as needed, or fix the valve seat without the aid of the opening.

The outer circumferential surface of the valve seat 120 is provided with a convex ring 121, and the convex ring 121 is used to define the position of the memory alloy spring 130. It will be understood by those skilled in the art that the raised ring 121 is not required and that the raised ring 121 may not be provided and the position of the memory alloy spring 130 may be defined in other ways.

In this embodiment, most of the memory alloy spring 130 is disposed in the hot water pipe 111, so that the hot water directly contacts the memory alloy spring 130, and the memory alloy spring 130 can adjust its deformation according to the temperature of the directly contacted hot water, thereby adjusting the size of the opening between the valve core 150 and the valve seat 120. However, the present invention is not limited thereto, and by reasonable layout and proper adjustment, all of the memory alloy spring 130 can be disposed in the hot water pipe 111, or most of the memory alloy spring 130 can be disposed in the cold water pipe 112, which does not affect the function of the memory alloy spring 130.

The memory alloy spring 130 is sleeved on the valve seat 120. However, the present invention is not limited thereto, and the memory alloy spring 130 may be a plurality of springs disposed around the valve seat 120.

The material of the memory alloy spring 130 is common SMA, the common SMA mainly comprises Ni-Ti-based SMA, Cu-based SMA, Fe-based SMA, Ag-based SMA, Au-based SMA, Co-based SMA and the like, wherein the Ni-Ti-based SMA has the best performance and the widest application. For example, AgCd, AuCd, CuAlNi, CuAuZn, CuSn, CuZn, InTi, NiAl, TiNi, FePt, FePd, MnCu, etc. may all undergo a martensitic phase change at a temperature below 100 ℃, thereby deforming the manufactured spring.

In this embodiment, the memory alloy spring 130 is preferably made of a material that can be deformed (restored) in an environment of-50 to 100 ℃, such as TiNi.

In the embodiment, the elastic member 140 is a spring, but the invention is not limited thereto, and those skilled in the art may select other members as the elastic member according to the requirement.

The valve core 150 is a hollow cylindrical member, a first end of the valve core 150 is connected to the cold water inlet 115 through a flexible seal 160 so that cold water can pass only from the inside of the valve core 150, and a second end of the valve core 150 is disposed facing the valve seat 120.

The memory alloy spring 130 biases the valve spool 150 to move the valve spool 150 toward the first direction X.

The elastic member 140 biases the valve spool 150 such that the valve spool 150 moves toward the second direction Y.

The first direction X is a direction in which the spool 150 moves away from the valve seat 120, and the second direction Y is opposite to the first direction X.

The outer peripheral surface of the valve core 150 is provided with a contact portion 151, and the memory alloy spring 130 and the elastic body are in contact with the contact portion 151. In the present embodiment, the memory alloy spring 130 is defined therebetween by the abutment 151 and the collar 121. In the present embodiment, the abutting portion 151 has an annular structure, but the present invention is not limited to this, and a person skilled in the art may set the abutting portion 151 to have another shape or structure as needed.

In the present embodiment, the flexible seal 160 is a film. However, the present invention is not limited thereto, and those skilled in the art may select other members as the flexible sealing member 160 as long as it is flexibly deformable to provide a moving space for the valve core 150 and to achieve sealing.

The inner wall of the cold water pipe 112 is provided with an annular protrusion 170, one end of the flexible sealing member 160 is connected to the annular protrusion 170, and the other end of the flexible sealing member 160 is connected to the first end of the valve core 150. Although not shown, the flexible seal 160 is typically secured to the annular projection 170 by an annular fastener, and the flexible seal 160 is connected to the valve core 150 by a clip or other means.

One end of the elastic member 140 abuts against the abutting portion 151, and the other end of the elastic member 140 abuts against the annular protrusion portion 170. The elastic member 140 is defined therebetween by the abutting portion 151 and the annular protrusion 170.

The operation of the bypass thermostatic regulating valve 100 will be briefly described below.

When hot water enters from the hot water inlet 113, the hot water contacts the memory alloy spring 130, the memory alloy spring 130 deforms (recovers) according to the temperature of the hot water, if the temperature of the hot water is higher than a set value (the elastic force of the elastic member 140), the recovery amount of the memory alloy spring 130 is increased, the valve core 150 is pushed to move towards the first direction, the opening between the valve core 150 and the valve seat 120 is increased, the cold water entering amount is increased, and the cold water is mixed with the hot water so that the temperature of the hot water flowing out from the hot water outlet 114 is not too high or the original temperature is maintained. Similarly, if the temperature of the hot water is lower than the set value (the elastic force of the elastic member 140), the recovery amount of the memory alloy spring 130 is decreased, and the elastic member 140 pushes the valve body 150 to move toward the second direction, so that the opening between the valve body 150 and the valve seat 120 is decreased, the cold water intake amount is decreased, and the cold water mixed with the hot water is decreased, so that the temperature of the hot water flowing out of the hot water outlet 114 is not too low, and the original temperature is maintained.

For the gas water heater, when the user adjusts the amount of hot water, correspondingly, the gas water heater can also adjust the firepower of the gas water heater, so as to prevent the water temperature from rising due to the fact that less water is heated by the same firepower. However, this adjustment of the fire is hysteretic, because of which the heat exchanger will heat the cold water to a temperature that will increase (above the original temperature) the temperature of the water flowing into the outlet conduit, and at this point the bypass thermostatic control valve 100 will act to draw in more cold water so that the temperature of the water flowing out of the outlet conduit will not be too high, or will remain at the original temperature. Similarly, when the user increases the amount of hot water, the gas water heater adjusts its own heating power accordingly, so that more water is heated with the same heating power, resulting in a decrease in water temperature. However, this adjustment of the fire is hysteretic, because of which the heat exchanger will heat the cold water to a temperature that will cause the temperature of the water flowing into the outlet conduit to drop (below the original temperature), and at this point the bypass thermostatic control valve 100 will act to reduce the introduction of cold water so that the temperature of the water flowing out of the outlet conduit will not be too low or will remain at the original temperature.

The temperature setting, the fire power adjustment, the water temperature setting, the cold water introduction amount, the opening size between the valve core 150 and the valve seat 120, and the elastic force of the elastic member 140 of the gas water heater can be set according to actual needs and can be obtained through experience of a person skilled in the art or an existing technical formula, and are not described in detail herein.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, are merely for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed in a particular orientation, and be operated, and therefore, should not be construed as limiting the present invention unless otherwise specified herein.

While specific embodiments of the invention have been described above, it will be appreciated by those skilled in the art that this is by way of example only, and that the scope of the invention is defined by the appended claims. Various changes and modifications to these embodiments may be made by those skilled in the art without departing from the spirit and scope of the invention, and these changes and modifications are within the scope of the invention.