CN110530034B

CN110530034B - Gas distributor and gas water heater comprising same

Info

Publication number: CN110530034B
Application number: CN201910828064.3A
Authority: CN
Inventors: 段裘铭
Original assignee: Ningbo Fotile Kitchen Ware Co Ltd
Current assignee: Ningbo Fotile Kitchen Ware Co Ltd
Priority date: 2019-09-03
Filing date: 2019-09-03
Publication date: 2021-02-26
Anticipated expiration: 2039-09-03
Also published as: CN110530034A

Abstract

The invention discloses a gas distributor and a gas water heater comprising the same. The gas distributor comprises a plurality of nozzles, wherein each nozzle comprises a shell, and an ejector pin, a memory alloy spring and an elastic body which are arranged in the shell; the thimble is arranged in the shell, a gas outlet is arranged at the top of the shell, a gas inlet is arranged at the bottom of the shell, the elastomer biases the thimble to move towards the direction far away from the gas outlet, and the memory alloy spring biases the thimble to move towards the direction close to the gas outlet. The memory alloy spring of the gas distributor can change the elasticity of the gas distributor according to the temperature, so that the opening degree of a nozzle of a gas water heater is adjusted according to seasons, the temperature rise amplitude is adjusted, and the use experience of a user is improved.

Description

Gas distributor and gas water heater comprising same

Technical Field

The invention relates to the field of machine manufacturing, in particular to a gas distributor and a gas water heater comprising the same.

Background

The gas water heater is also called as a gas water heater, and refers to a gas appliance which takes gas as fuel and transfers heat to cold water flowing through a heat exchanger in a combustion heating mode so as to achieve the purpose of preparing hot water.

Gas water heaters generally comprise: the gas distributor, the fan, the gas mixing chamber, heat exchanger subassembly, the gas is spouted from the nozzle of distributor and is got into the gas mixing chamber after getting into the gas distributor, later is lighted, ignites the cold water in the gas flow heat exchanger subassembly of producing and heating the heat exchanger subassembly.

However, the opening of the nozzle of the existing gas water heater is not adjustable or needs to be manually adjusted, but along with the change of seasons, the temperature rise amplitude of the gas water heater needs to be adjusted, especially the temperature of outlet water in summer needs to be reduced and the hot water quantity in winter needs to be increased.

Disclosure of Invention

The present invention is directed to overcoming the above-mentioned drawbacks of the prior art, and to providing a gas distributor and a gas water heater including the same.

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

a fuel gas distributor comprises a plurality of nozzles, wherein each nozzle comprises a shell, and an ejector pin, a memory alloy spring and an elastic body which are arranged in the shell;

the thimble is located the inside of casing, the top of casing is equipped with the gas export, the bottom of casing is equipped with the gas import, the elastomer bias the thimble makes the thimble orientation is kept away from the direction removal of gas export, memory alloy spring bias the thimble makes the thimble orientation is close to the direction removal of gas export.

Preferably, the nozzle further comprises a cover plate, the cover plate is fixed to the bottom of the nozzle, and the fuel gas inlet is formed in the cover plate.

Preferably, the thimble comprises a cylinder and an extension extending radially outwards from the outer surface of the cylinder, and the elastic body and the memory alloy spring are abutted against the extension.

Preferably, the bottom end of the cylinder passes through the gas inlet.

Preferably, the inner surface of the housing is provided with a limiting portion to limit a moving distance of the thimble in the up-down direction.

Preferably, the limiting part is a stepped surface.

Preferably, the nozzle further comprises an isolation portion, and the isolation portion is arranged around the ejector pin and is arranged between the ejector pin and the memory alloy spring.

Preferably, the isolation portion is provided with a plurality of gaps extending in an up-down direction, the thimble includes a cylinder and an extension portion extending radially outward from an outer surface of the cylinder, and the extension portion is movably inserted into the gap.

Preferably, the elastic body and the memory alloy spring are abutted against the extension portion.

A gas water heater comprising a gas distributor as described above.

The positive progress effects of the invention are as follows: this gas distributor's memory alloy spring can change the elasticity of self according to the temperature, thereby the extension makes the thimble move in order to reduce the nozzle aperture towards the gas export when ambient temperature risees, shortens when ambient temperature reduces so that the thimble moves in order to increase the nozzle aperture towards the gas entry, like this when winter, gas distributor provides more gas, and gas distributor improves less gas when summer, thereby gas heater's intensification range has been adjusted according to the season, improve user and use experience.

Drawings

Fig. 1 is a schematic perspective view of a gas distributor according to embodiment 1 of the present invention.

Fig. 2 is a schematic view of the internal structure of a gas distributor according to embodiment 1 of the present invention.

Fig. 3 is a schematic cross-sectional structure of a nozzle according to embodiment 1 of the present invention.

Fig. 4 is a schematic perspective view of a thimble according to embodiment 1 of the present invention.

Fig. 5 is a schematic cross-sectional structure of a nozzle according to example 2 of the present invention.

Fig. 6 is a schematic perspective view of a thimble according to embodiment 2 of the present invention.

Description of reference numerals:

example 1

Gas distributor 100

Outer shell 110

Nozzle 120

Casing 121

Thimble 122

Column 123

Extension 124

Memory alloy spring 125

Elastomer 126

Gas inlet 127

Gas outlet 128

Cover plate 130

Example 2

Thimble 201

Column 202

Extension 203

Memory alloy spring 204

Isolation portion 205

Gap 206

Step 207

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.

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 that are relative, are used merely to facilitate the description of the invention and to simplify the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, unless otherwise indicated herein.

Example 1

As shown in fig. 1 to 4, the gas distributor 100 includes: a housing 110 and a plurality of nozzles 120 provided on the housing 110.

The gas distributor 100 of the present embodiment is a segmented gas distributor 100, and a first-segment chamber and a second-segment chamber are formed in a housing 110 of the gas distributor 100.

The present invention is not limited thereto and the form of the gas distributor 100 may be varied, and the present invention is primarily directed to the improvement of the nozzle 120 of the gas distributor 100.

As shown in fig. 3, the nozzle 120 includes a housing 121, and a thimble 122, a memory alloy spring 125, and an elastic body 126 disposed in the housing 121.

The thimble 122 is disposed inside the casing 121, the top of the casing 121 is provided with a gas outlet 128, the bottom of the casing 121 is provided with a gas inlet 127, the elastic body 126 biases the thimble 122 to move the thimble 122 away from the gas outlet 128, and the memory alloy spring 125 biases the thimble 122 to move the thimble 122 close to the gas outlet 128.

The nozzle 120 further includes a cover plate 130, the cover plate 130 is fixed to the bottom of the nozzle 120, and the gas inlet 127 is provided on the cover plate 130. The cap plate 130 may be fixed to the inner surface of the housing 121, i.e., to the bottom of the nozzle 120, by welding or screwing.

As shown in fig. 4, the thimble 122 includes a cylinder 123 and an extension 124 extending radially outward from an outer surface of the cylinder 123, and the elastic body 126 and the memory alloy spring 125 are abutted against the extension 124.

In the embodiment, the extension 124 is a combination of a ring and a rib, but the invention is not limited thereto, and those skilled in the art can also arbitrarily select the form of the extension 124 as needed, but the extension 124 should allow the gas to pass through.

The bottom end of the cylinder 123 passes through a gas inlet 127.

Although not shown in the drawings, the inner surface of the housing 121 may be provided with a stopper portion to limit the moving distance of the thimble 122 in the up-down direction. This prevents the thimble 122 from being excessively raised to block the gas outlet 128 or excessively lowered to open the gas outlet 128 excessively.

The limiting part can be a step surface.

The elastomer 126 is preferably a spring.

The memory alloy spring 125 of the gas distributor 100 can change its elasticity according to the temperature, and is extended when the ambient temperature rises to make the thimble 122 move toward the gas outlet 128 to reduce the opening degree of the nozzle 120, and is shortened when the ambient temperature falls to make the thimble 122 move toward the gas inlet to increase the opening degree of the nozzle 120, so that the gas distributor 100 provides more gas in winter, and the gas distributor 100 improves less gas in summer, thereby adjusting the heating range (combustion load) of the gas water heater according to the seasons and improving the user experience.

The memory alloy spring 125 is made of common SMA, wherein 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, and 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 the present invention, the memory alloy spring 125 is preferably made of a material that can deform at 0-35 ℃.

The present embodiment also provides a gas water heater including the gas distributor 100 as above.

Example 2

The gas distributor of embodiment 2 is substantially the same as the gas distributor 100 of embodiment 1, except that:

as shown in FIG. 5, the nozzle further includes a spacer 205, and the spacer 205 is disposed around the thimble 201 and between the thimble 201 and the memory alloy spring 204.

The isolation portion 205 can isolate the memory alloy spring 204 and the elastic body from the gas flow passing through the nozzle, so as to prevent the memory alloy spring 204 and the elastic body from being directly impacted by the gas flow. The gas generally contains impurities such as sulfur, and if the gas directly contacts the memory alloy spring 204 or the elastic body, the gas easily corrodes the memory alloy spring 204 or the elastic body.

The isolation portion 205 is provided with a plurality of slits 206 extending in the up-down direction, the thimble 201 includes a cylinder 202 and an extension portion 203 extending radially outward from an outer surface of the cylinder 202, and the extension portion 203 is movably inserted in the slits 206.

The length of the gap 206 may directly limit the range of movement of the thimble 201. Alternatively, a limiting portion may be additionally provided to limit the moving range of the thimble 201. For example, in fig. 5, a step portion is provided to limit the maximum distance that the thimble 201 moves towards the gas outlet, so as to prevent the thimble 201 from completely blocking the gas outlet and causing the gas water heater to be flameout.

In the present embodiment, the extension 203 is a plurality of ribs, but the present invention is not limited thereto, and those skilled in the art may arbitrarily set the form of the extension 203 as desired, but the extension 203 should allow gas to pass through.

The elastic body and the memory alloy spring 204 are abutted against the extension portion 203.

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.

Claims

1. The fuel gas distributor is characterized by comprising a plurality of nozzles, wherein each nozzle comprises a shell, and an ejector pin, a memory alloy spring and an elastic body which are arranged in the shell;

the ejector pin is arranged in the shell, a gas outlet is formed in the top of the shell, a gas inlet is formed in the bottom of the shell, the elastic body biases the ejector pin to enable the ejector pin to move towards the direction far away from the gas outlet, and the memory alloy spring biases the ejector pin to enable the ejector pin to move towards the direction close to the gas outlet;

the gas distributor is used for a gas water heater;

the memory alloy spring elongates when the ambient temperature increases to move the thimble toward the gas outlet to decrease the opening degree of the nozzle, and shortens when the ambient temperature decreases to move the thimble toward the gas inlet to increase the opening degree of the nozzle.

2. The gas distributor of claim 1, wherein said nozzle further comprises a cover plate secured to the bottom of said nozzle, said gas inlet being provided in said cover plate.

3. The gas distributor of claim 1 wherein said thimble comprises a post and an extension extending radially outwardly from an outer surface of said post, said elastomer and said memory alloy spring each abutting against said extension.

4. A gas distributor as claimed in claim 3, wherein the bottom end of said cylinder passes through said gas inlet.

5. The gas distributor according to claim 1, wherein the inner surface of said housing is provided with a stopper portion for limiting a moving distance of said thimble in the up-down direction.

6. A gas distributor as claimed in claim 5 wherein said stop is a stepped surface.

7. The gas distributor of claim 1, wherein said nozzle further comprises a spacer portion disposed around said thimble and between said thimble and said memory alloy spring.

8. The gas distributor of claim 7 wherein said partition defines a plurality of slots extending in an up-down direction, said pin including a post and an extension extending radially outwardly from an outer surface of said post, said extension being movably inserted into said slots.

9. The gas distributor of claim 8 wherein said elastomer and said memory alloy spring both abut said extension.

10. Gas water heater characterized in that it comprises a gas distributor according to any one of claims 1 to 9.