CN210372172U

CN210372172U - Pressure relief device, water inlet joint and gas water heater

Info

Publication number: CN210372172U
Application number: CN201920870634.0U
Authority: CN
Inventors: 卢楚鹏; 周奋
Original assignee: Guangdong Vanward New Electric Co Ltd
Current assignee: Guangdong Vanward New Electric Co Ltd
Priority date: 2019-06-11
Filing date: 2019-06-11
Publication date: 2020-04-21
Anticipated expiration: 2029-06-11

Abstract

The utility model relates to a pressure relief device, water supply connector and gas heater, pressure relief device include: the pressure relief device is stable and reliable, can accurately make effective action according to the internal water pressure of the gas water heater, effectively plays a role in protecting the gas water heater, and prolongs the service life of the gas water heater.

Description

Pressure relief device, water inlet joint and gas water heater

Technical Field

The utility model relates to a water valve technical field especially relates to a pressure relief device, water supply connector and gas heater.

Background

At present, the current gas water heater can set up the relief valve in waterway system for preventing that inside water pressure from surpassing waterway system's maximum bearing capacity and causing waterway component to damage, and when inside water pressure was too big, the relief valve was opened, outwards discharged water to reach protection waterway system's purpose.

However, because the valve core of the conventional pressure relief valve is unreasonable in structural design, the valve core of the pressure relief valve is prone to position deviation caused by vibration, and then the preset pressure relief value of the pressure relief valve is changed, so that the pressure relief valve cannot accurately perform effective action according to the internal water pressure of the gas water heater. It can be seen that the conventional pressure relief valve has poor reliability.

SUMMERY OF THE UTILITY MODEL

In view of the above, it is necessary to provide a pressure relief device, a water inlet joint and a gas water heater, which are stable and reliable, can accurately perform effective actions according to the internal water pressure of the gas water heater, and effectively protect the gas water heater, thereby prolonging the service life of the gas water heater.

In order to achieve the above object, the utility model provides a pressure relief device, pressure relief device include: the valve comprises a valve body and a valve core assembly, wherein a guide cavity for containing the valve core assembly is formed in the valve body, the valve core assembly comprises a valve core body, a guide part is arranged on the valve core body, and a guide wall surface for being attached to the side wall of the guide cavity is arranged on the peripheral wall of the guide part, so that the valve core body moves along the guide of the guide cavity.

Compared with the background art, the pressure relief device at least has the following beneficial effects: through set up the guide part at the perisporium of case body, and the perisporium of guide part laminates with the lateral wall in direction chamber mutually, makes the case body can move along the direction in direction chamber steadily, even receive the vibration, under the effect that the perisporium of guide part and the lateral wall in direction chamber were laminated mutually, the case body can not take place the offset yet to can effectively keep pressure relief device's preset pressure release value stable unchangeable, make pressure relief device can accurately make effective action according to gas heater's inside water pressure. Therefore, the pressure relief device is stable and reliable, and effectively plays a role in protecting the gas water heater, so that the service life of the gas water heater is prolonged.

In one embodiment, the peripheral wall of the guide part is further provided with a pressure relief wall surface, a gap is formed between the pressure relief wall surface and the side wall of the guide cavity, and the gap is used for water to pass through.

In one embodiment, the guide wall surface and the pressure relief wall surface are provided in plurality, and each of the guide wall surface and the pressure relief wall surface are provided at an interval in a circumferential direction of the guide portion.

In one embodiment, the valve element assembly further comprises a spring, a first positioning groove is formed in the end portion, away from the water inlet port of the valve body, of the valve element body, a second positioning groove is formed in the end portion, away from the water inlet port, of the guide cavity, and two ends of the spring are abutted to the first positioning groove and the second positioning groove.

In one embodiment, a positioning seat is fixedly arranged at an end part of the guide cavity far away from the water inlet port, and the second positioning groove is arranged on the positioning seat.

In one embodiment, a clamping groove is formed in the side wall of the guide cavity, a fixing piece is clamped in the clamping groove, and the fixing piece is used for abutting against one side, back to the spring, of the positioning seat.

In one embodiment, a sealing member is disposed at an end of the valve core body close to the water inlet port of the valve body, and the sealing member is used for abutting against a periphery of the water inlet port.

In one embodiment, the number of the guide portions is two, and the two guide portions are respectively arranged at two ends of the valve core body.

In order to achieve the above object, the utility model also provides a water inlet joint, water inlet joint include: the shell is provided with a pressure relief opening; the pressure relief device is arranged in the shell, and the water outlet end of the pressure relief device is connected with the side wall of the pressure relief opening; or, the pressure relief device is arranged outside the shell, and the water inlet end of the pressure relief device is connected with the side wall of the pressure relief opening.

Since the water inlet joint adopts all the embodiments of the pressure relief device, at least all the beneficial effects of the embodiments are achieved, and the detailed description is omitted.

In order to achieve the above object, the utility model also provides a gas water heater, gas water heater include: the water inlet joint is connected with an external water pipe, and the water outlet end of the water inlet joint is connected with the water inlet pipe.

Since the gas water heater adopts all the embodiments of the water inlet joint, at least all the beneficial effects of the embodiments are achieved, and the detailed description is omitted.

Drawings

Fig. 1 is a cross-sectional view of a pressure relief device according to an embodiment of the present invention;

fig. 2 is an exploded view of a pressure relief device according to an embodiment of the present invention;

FIG. 3 is a schematic structural view of a valve cartridge body in the pressure relief device of FIG. 2;

fig. 4 is a cross-sectional view of a water inlet joint according to an embodiment of the present invention.

10. The pressure relief device comprises a pressure relief device 11, a valve body 111, a guide cavity 112, a clamping groove 113, a water inlet port 114, a water outlet port 115, a connecting portion 12, a valve core body 121, a guide portion 1211, a guide wall surface 1212, a pressure relief wall surface 122, a first positioning groove 123, a pressure relief hole 13, a spring 14, a positioning seat 141, a second positioning groove 142, a water outlet hole 15, a fixing member 16, a sealing member 17, a sealing ring 20, a shell 21 and a pressure relief opening.

Detailed Description

In order to facilitate understanding of the present invention, the present invention will be described more fully hereinafter with reference to the accompanying drawings. The preferred embodiments of the present invention are shown in the drawings. The invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. In contrast, when an element is referred to as being "directly on" another element, there are no intervening elements present. In the present invention, "first" and "second" do not represent specific quantities or sequences, but are merely used for distinguishing names.

As shown in fig. 1 to 3, a pressure relief device 10 includes: the valve comprises a valve body 11 and a valve core assembly, wherein a guide cavity 111 for accommodating the valve core assembly is formed in the valve body 11, the valve core assembly comprises a valve core body 12, a guide part 121 is arranged on the valve core body 12, and a guide wall surface 1211 for being attached to the side wall of the guide cavity 111 is arranged on the peripheral wall of the guide part 121, so that the valve core body 12 moves along the guide of the guide cavity 111.

The one end of traditional pressure relief device's case is contradicted on the port of intaking of valve body, with the port shutoff of intaking, the other end and spring butt, provide restoring force by the spring, however, because there is great clearance in the inner wall of case and valve body, when receiving the vibration, the case takes place the position skew easily and leads to pressure relief device's preset pressure release value to change, make pressure relief device can't make effective action according to gas heater's inside water pressure, the case can break away from the spring when serious, lead to pressure relief device to become invalid. In the pressure relief device 10, the guide part 121 is arranged on the peripheral wall of the valve core body 12, and the peripheral wall of the guide part 121 is attached to the side wall of the guide cavity 111, so that the valve core body 12 can stably move along the guide of the guide cavity 111, and even if the valve core body is vibrated, the valve core body 12 cannot generate position deviation under the action of the attachment of the peripheral wall of the guide part 121 and the side wall of the guide cavity 111, so that the pressure relief device 10 can accurately make effective action according to the internal water pressure of the gas water heater, the preset pressure relief value of the pressure relief device 10 can be effectively kept stable and unchanged, and the pressure relief device 10 can accurately make effective action according to the internal water pressure of the gas water heater. Therefore, compared with the traditional pressure relief device, the pressure relief device 10 is stable and reliable, and effectively plays a role in protecting the gas water heater, so that the service life of the gas water heater is prolonged.

In an embodiment, please refer to fig. 1 and fig. 3, a pressure relief wall 1212 is further disposed on a peripheral wall of the guiding portion 121, and a gap is formed between the pressure relief wall 1212 and a side wall of the guiding cavity 111 for water to flow through. When the water pressure inside the gas water heater is too high, the water flows out through the space between the pressure relief wall 1212 and the side wall of the guide cavity 111, so as to achieve the purpose of pressure relief.

In an embodiment, with continued reference to fig. 3, a plurality of guiding walls 1211 and a plurality of pressure-releasing walls 1212 are provided, and each guiding wall 1211 and each pressure-releasing wall 1212 are spaced apart from each other along the circumferential direction of the guiding portion 121. Specifically, each guide wall 1211 is equidistantly distributed along the circumferential wall of the guide portion 121, so that the valve body 12 is uniformly stressed along the circumferential direction, and the valve body 12 is effectively prevented from being shifted in the moving process due to uneven stress on both sides, and similarly, each pressure relief wall 1212 is equidistantly distributed along the circumferential wall of the guide portion 121, so that the passing pressure of water flow between each pressure relief wall 1212 and the side wall of the guide cavity 111 is equalized, so that the valve body 12 is uniformly stressed along the circumferential direction, and the valve body 12 is more effectively prevented from being shifted in the moving process due to uneven stress on both sides, and thus the preset pressure relief value of the pressure relief device 10 can be more effectively kept stable and unchanged. In particular, the cross-section of the guide cavity 111 is circular, and correspondingly, the guide wall 1211 is a circular arc surface, so that the guide wall 1211 is effectively attached to the side wall of the guide cavity 111.

In one embodiment, referring to fig. 1 and 2, the valve core assembly further includes a spring 13, and the valve core body 12 is far away from the water inlet port 113 of the valve body 11? Is provided with a first positioning groove 122, the end part of the guide cavity 111 far away from the water inlet port 113 is provided with a second positioning groove 141, and the spring 13 is abutted in the first positioning groove 122 and the second positioning groove 141. Specifically, the axis of the first positioning groove 122 and the axis of the second positioning groove 141 are coincident with the axis of the valve element body 12, the spring 13 is positioned at the first positioning groove 122 and the second positioning groove 141 together, even if the spring 13 is vibrated, the spring 13 cannot generate position deviation, and the elastic force of the spring 13 is effectively kept to act on the valve element body 12 along the axial direction of the valve element body 12, so that the preset pressure relief value of the pressure relief device 10 can be kept stable and unchanged more effectively, and the pressure relief device 10 can accurately make effective action according to the internal water pressure of the gas water heater.

In an embodiment, please refer to fig. 1 and fig. 2, the positioning seat 14 is fixedly disposed on an end portion of the guide cavity 111 away from the water inlet 113, and the second positioning groove 141 is disposed on the positioning seat 14. Specifically, the positioning seat 14 is further provided with a water outlet hole 142 communicated with the water outlet port 114 of the valve body 11, when the water pressure inside the gas water heater is too high, the water flow jacks up the valve core body 12 and enters the guide cavity 111, and finally the water flow is discharged from the water outlet port 114 of the valve body 11 through the water outlet hole 142.

Further, please refer to fig. 1, a clamping groove 112 is formed in a side wall of the guiding cavity 111, a fixing member 15 is clamped in the clamping groove 112, and the fixing member 15 is used for abutting against a side of the positioning seat 14, which is opposite to the spring 13. When the pressure relief device 10 is installed, the valve core body 12, the spring 13 and the positioning seat 14 are sequentially installed into the guide cavity 111 from the water outlet port 114 of the valve body 11, one end of the spring 13 abuts against the first positioning groove 122 of the valve core body 12, the other end of the spring 13 abuts against the second positioning groove 141 of the positioning seat 14, finally, the fixing piece 15 is installed into the clamping groove 112, so that the positioning seat 14 is pressed and fixed, and the installation of the pressure relief device 10 is completed, and the pressure relief device is very fast and convenient. Specifically, the fixing member 15 is preferably a snap spring, and the snap spring is compressed and narrowed by pressing two sides of the snap spring, so that the snap spring can be quickly installed in the clamping groove 112, and the installation convenience of the pressure relief device 10 is further improved.

In an embodiment, please refer to fig. 1 and fig. 2, a sealing member 16 is disposed at an end of the valve core body 12 close to the water inlet port 113 of the valve body 11, the sealing member 16 is used for abutting against a periphery of the water inlet port 113 to block the water inlet port 113, and when the water pressure inside the gas water heater is too high, the water flow jacks up the sealing member 16, enters the guide cavity 111, and finally is discharged outwards.

Specifically, the valve core body 12 is provided with a third positioning groove (not marked in the figure) at an end close to the water inlet port 113 of the valve body 11, and the sealing element 16 is clamped in the third positioning groove to realize the positioning of the sealing element 16, so as to prevent the sealing element 16 from generating position deviation and leading to the stability and invariability of the preset pressure relief value of the pressure relief device 10, and further improve the stability and reliability of the pressure relief device 10.

In an embodiment, please refer to fig. 3, two guiding portions 121 are provided, and the two guiding portions 121 are respectively disposed at two ends of the valve core body 12. Through all setting up guide part 121 at case body 12 both ends, avoid case body 12 to take place the offset more effectively, further guarantee that case body 12 can more steadily move along direction chamber 111, improve pressure relief device 10 reliable and stable.

Specifically, please refer to fig. 3, in combination with the foregoing embodiment, a pressure relief hole 123 communicated with the first positioning groove 122 is disposed on the valve core body 12, the pressure relief hole 123 is located between the two guiding portions 121, the first positioning groove 122 is also used as a pressure relief cavity, when the water pressure inside the gas water heater is too high, the water flow jacks up the valve core body 12 and enters the guiding cavity 111, a part of the water flow passes through the pressure relief surfaces of the two guiding portions 121 and is then discharged from the water outlet port 114 of the valve body 11, another part of the water flow enters the pressure relief cavity from the pressure relief hole 123 and is finally discharged from the water outlet port 114 of the valve body 11, and the arrangement effectively accelerates the water discharge speed, and realizes rapid pressure reduction, thereby more effectively protecting the gas water heater.

As shown in fig. 4, a water inlet joint includes: the shell 20 and the pressure relief device 10, the shell 20 is provided with a pressure relief opening 21; the pressure relief device 10 is arranged in the shell 20, and the water outlet end of the pressure relief device 10 is connected with the side wall of the pressure relief opening 21; or, the pressure relief device 10 is disposed outside the housing 20, and the water inlet end of the pressure relief device 10 is connected to the sidewall of the pressure relief opening 21.

Since the water inlet joint adopts all the embodiments of the pressure relief device 10, at least all the beneficial effects of the embodiments are achieved, and no further description is given here.

Specifically, referring to fig. 1 and fig. 2, in a situation that the pressure relief device 10 is disposed in the housing 20, a connection portion 115 is disposed at a water outlet end of the pressure relief device 10, and the pressure relief device 10 is connected to a side wall of the pressure relief opening 21 through the connection portion 115; in the case that the pressure relief device 10 is disposed outside the housing 20, the connecting portion 115 is disposed at the water inlet end of the pressure relief device 10, and the pressure relief device 10 is connected to the side wall of the pressure relief opening 21 through the connecting portion 115; in particular, the connection portion 115 is preferably a threaded portion.

Further, referring to fig. 1 and fig. 2, a sealing ring 17 is sleeved on the connecting portion 115, and the sealing ring 17 is used for sealing a gap between the pressure relief device 10 and the housing 20 to prevent water leakage.

A gas water heater comprising: the water inlet end of the water inlet joint is connected with an external water pipe, and the water outlet end of the water inlet joint is connected with the water inlet pipe.

The technical features of the above embodiments can be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the above embodiments are not described, but should be considered as the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above examples only represent some embodiments of the present invention, and the description thereof is more specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims

1. A pressure relief device (10), said pressure relief device (10) comprising: the valve core assembly comprises a valve body (11) and a valve core assembly, wherein a guide cavity (111) used for containing the valve core assembly is formed in the valve body (11), the valve core assembly comprises a valve core body (12), a guide portion (121) is arranged on the valve core body (12), and a guide wall surface (1211) used for being attached to the side wall of the guide cavity (111) is arranged on the peripheral wall of the guide portion (121) so that the valve core body (12) can move along the guide of the guide cavity (111).

2. A pressure relief device (10) according to claim 1, characterized in that the peripheral wall of the guiding portion (121) is further provided with a pressure relief wall (1212), and a gap is provided between the pressure relief wall (1212) and the side wall of the guiding chamber (111), and the gap is used for water flow.

3. A pressure relief device (10) as claimed in claim 2, characterized in that said guide wall surface (1211) and said pressure relief wall surface (1212) are provided in plural, and each of said guide wall surface (1211) and said pressure relief wall surface (1212) are provided at a distance from each other in a circumferential direction of said guide portion (121).

4. The pressure relief device (10) according to claim 1, wherein the valve core assembly further comprises a spring (13), a first positioning groove (122) is formed in an end portion of the valve core body (12) far away from the water inlet port (113) of the valve body (11), a second positioning groove (141) is formed in an end portion of the guide cavity (111) far away from the water inlet port (113), and two ends of the spring (13) abut against the first positioning groove (122) and the second positioning groove (141).

5. The pressure relief device (10) according to claim 4, wherein a positioning seat (14) is fixedly disposed on an end of the guiding cavity (111) far away from the water inlet port (113), and the second positioning groove (141) is disposed on the positioning seat (14).

6. A pressure relief device (10) according to claim 5, characterized in that a clamping groove (112) is provided on the side wall of said guiding cavity (111), a fixing element (15) is clamped in said clamping groove (112), said fixing element (15) is used for abutting against the side of said positioning seat (14) facing away from said spring (13).

7. A pressure relief device (10) according to any of claims 1-6, characterized in that the end of the cartridge body (12) close to the water inlet port (113) of the valve body (11) is provided with a sealing element (16), said sealing element (16) being adapted to interfere with the periphery of the water inlet port (113).

8. The pressure relief device (10) according to any of claims 1-6, wherein there are two guiding portions (121), and the two guiding portions (121) are respectively disposed at two ends of the valve core body (12).

9. A water inlet joint, characterized in that said water inlet joint comprises: -a housing (20) and a pressure relief device (10) according to any of claims 1 to 8, said housing (20) being provided with a pressure relief opening (21); the pressure relief device (10) is arranged in the shell (20), and the water outlet end of the pressure relief device (10) is connected with the side wall of the pressure relief opening (21); or the pressure relief device (10) is arranged outside the shell (20), and the water inlet end of the pressure relief device (10) is connected with the side wall of the pressure relief opening (21).

10. A gas water heater, characterized in that, the gas water heater include: an inlet pipe and an inlet fitting according to claim 9, the inlet end of the inlet fitting being connected to an external water pipe and the outlet end of the inlet fitting being connected to the inlet pipe.