WO2020168714A1

WO2020168714A1 - Gas distribution pipe assembly and gas stove

Info

Publication number: WO2020168714A1
Application number: PCT/CN2019/108255
Authority: WO
Inventors: 刘书兴
Original assignee: 珠海格力电器股份有限公司
Priority date: 2019-02-22
Filing date: 2019-09-26
Publication date: 2020-08-27
Also published as: CN109751635A

Abstract

A gas distribution pipe assembly and a gas stove. The gas distribution pipe assembly comprises: a gas distribution pipe (2), at least one end thereof being formed with a bell mouth (3); a nut (5), sleeved on the gas distribution pipe (2) and adapted to be threadedly connected with a connected member; and a force bearing member, sleeved on the gas distribution pipe (2) and located between the nut (5) and the bell mouth (3), the force bearing member being located between the outer wall of the bell mouth (3) and the inner wall of the nut (5) after the nut (5) is threadedly connected with the connected member. Instead of the bell mouth (3), the force bearing member bears the compression force and destructive torsional force of the nut (5), ensuring a sealing effect of the gas distribution pipe assembly.

Description

Air distribution pipe assembly and gas stove

Technical field

The application relates to the technical field of gas pipe connection joints, and in particular to a gas distribution pipe assembly and a gas stove. This application claims the priority of the patent application filed to the State Intellectual Property Office of China on February 22, 2019, with the application number of 201910136654.X and the invention title of "a sub-pipe assembly and gas stove".

Background technique

In the gas stove structure, the gas pipe is connected to the valve body and the nozzle. Because the limit temperature of the gas pipe may reach 150℃ or more when the stove is working, in order to ensure the service life and reliability of the gas pipe, almost all metal gas pipes and corresponding Metal connection joints, and auxiliary sealing materials such as gaskets and glue cannot be used on the sealing surface. Usually the valve body joint is copper; the gas manifold is aluminum; the joints at both ends of the gas manifold are copper; the nozzle is copper.

The trachea is relatively thin. Generally, the wall thickness of the trachea is 0.6mm. Because the angle of the trachea must be manually adjusted during the assembly process of the whole machine, too thick wall thickness will cause the trachea to be too strong and not convenient for manual adjustment. However, as shown in the structure of the air pipe in Figure 1, the air pipe is connected to the nozzle and valve body. Both ends of the air pipe are processed into a "bell mouth" shape. The "bell mouth" is butted with the nozzle and valve body, and then the nut is pressed tight. The "bell mouth" is processed by directly expanding the two ends of the air pipe. The thickness of the material at this place is reduced to about 0.4mm. When the nut is compressed, the "bell mouth" is often broken due to the thin wall thickness, resulting in gas leakage .

In order to save space as much as possible when the air manifold is connected to the valve body and the nozzle, the air manifold generally has several bends, and it is not a flat curve, but a spatial curve. This often occurs when the air manifold is connected to the valve body and the nozzle. In the case of large deviations in coaxiality, (that is, "installed crooked"). The "flare" of the air distribution pipe and the nozzle mating surface are skewed, which will also cause leakage at the connection between the air distribution pipe and the valve body and nozzle.

Summary of the invention

Therefore, the technical problem to be solved by the present application is to overcome the defect that gas is easily leaked at the connection between the gas manifold and the valve body or nozzle in the prior art, so as to provide a gas manifold assembly and a gas stove that do not easily leak gas.

In order to solve the above-mentioned technical problems, the present application provides a gas distribution pipe assembly, which is suitable for connecting with a connector formed with threads on the outside of the end, and includes:

The air distribution pipe, at least one end of which is formed with a bell mouth;

Nut, sleeved on the gas distribution pipe, suitable for threaded connection with the connecting piece;

The bearing member is sleeved on the air distribution pipe and is located between the nut and the bell mouth. After the nut and the connecting member are threadedly connected, the bearing member is located on the outer wall of the bell mouth and Between the inner wall of the nut.

The bearing member is a gasket surrounding the bell mouth.

The gasket matches the shape of the bell mouth.

The nut includes a first section adapted to the outer diameter of the thread, a second section adapted to the outer diameter of the air distribution pipe, and a cone connecting the first section and the second section At least one outer end of the gasket abuts against the inner surface of the nut when the nut connects the gas distribution pipe with the connecting piece.

The connecting piece is a nozzle or a valve body.

The two ends of the air distribution pipe have the same structure, and both are provided with the bell mouth, the bearing member and the nut.

The gas distribution pipe adopts an alloy material gas pipe.

The wall thickness of the two ends of the gas distribution pipe is greater than the wall thickness of the middle pipe section.

The present application also provides a gas stove having the gas distribution pipe assembly, wherein the connection piece connected to one end of the gas distribution pipe assembly is a valve body, and the connection piece connected to the other end of the gas distribution pipe assembly is a nozzle.

The technical solution of this application has the following advantages:

1. A gas distribution pipe assembly provided by this application, when the gas distribution pipe is connected to the connecting piece, the bell mouth of the gas distribution pipe is butted with the connecting piece. When the nut is tightened, the bearing piece is located between the outer wall of the bell mouth and the inner wall of the nut. In between, the bearing member replaces the bell mouth to bear the pressing force and destructive torque of the nut, and the bearing member transfers the pressing force to the bell mouth evenly, thereby protecting the bell mouth from being directly torn by the pressing force and destructive torque It causes gas leakage, thereby ensuring the sealing effect of the gas distribution pipe assembly.

2. In the air distribution pipe assembly provided by the present application, the bearing member is a gasket surrounding the bell mouth, which has a simple structure and low cost.

3. In the air distribution pipe assembly provided by the present application, the gasket matches the shape of the bell mouth, which can ensure that the outer wall of the bell mouth will not directly contact the inner wall of the nut, and protect the bell mouth from being damaged.

4. A gas distribution pipe assembly provided by the present application, the nut includes a first section adapted to the outer diameter of the thread, a second section adapted to the outer diameter of the gas distribution pipe, and a connection The conical transition section of the first section and the second section, when the nut connects the air distribution pipe with the connecting piece, at least one outer end of the washer abuts against the inner surface of the nut Above, the structure is simple and compact, and the connection is reliable.

5. The gas distribution pipe assembly provided by the present application, wherein the connecting member is a nozzle or a valve body, which can ensure the air tightness of the connection between the gas distribution pipe and the nozzle or valve body, and is not prone to gas leakage.

6. The air distribution pipe assembly provided by the present application has the same structure at both ends of the air distribution pipe, and is provided with the bell mouth, the bearing member, and the nut, so that the air tightness of both ends of the air distribution pipe is better.

7. A gas distribution pipe assembly provided by the present application, wherein the gas distribution pipe adopts an alloy material gas pipe, so that the toughness and wear resistance of the gas distribution pipe are high, and it is convenient for manual adjustment and installation.

8. The gas distribution pipe assembly provided by the present application has a wall thickness at both ends of the gas distribution pipe greater than the wall thickness of the middle pipe section, which facilitates the adjustment and installation of the gas distribution pipe according to the installation space, and also makes the two ends of the gas distribution pipe difficult to be damaged.

9. A gas stove provided by the present application has the above-mentioned gas distribution pipe assembly, wherein the connecting piece connected to one end of the gas distribution pipe assembly is a valve body, and the connection piece connected to the other end of the gas distribution pipe assembly is a nozzle. The gas stove has good airtightness and is not prone to gas leakage.

Description of the drawings

In order to more clearly illustrate the specific embodiments of this application or the technical solutions in the prior art, the following will briefly introduce the drawings that need to be used in the specific embodiments or the description of the prior art. Obviously, the appendix in the following description The drawings are some embodiments of the application. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative work.

Figure 1 is a front view of a tracheal tube assembly provided in Embodiment 1 of the application;

Fig. 2 is a partial cross-sectional view of the air distribution pipe assembly shown in Fig. 1;

FIG. 3 is a schematic diagram of the structure of the air distribution pipe assembly shown in FIG. 1;

4 is a partial cross-sectional view of the air distribution pipe assembly shown in FIG. 1 after installation.

Description of reference signs:

1- nozzle; 2- gas pipe; 3- bell mouth; 4- gasket; 5- nut; 51- first section; 52- second section; 53- conical transition section.

detailed description

The technical solutions of the present application will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of this application.

In the description of this application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. The indicated orientation or positional relationship is based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the application and simplifying the description, and does not indicate or imply that the pointed device or element must have a specific orientation or a specific orientation. The structure and operation cannot therefore be understood as a limitation of this application. In addition, the terms "first", "second", and "third" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance.

In the description of this application, it should be noted that the terms "installation", "connection", and "connection" should be interpreted broadly unless otherwise clearly specified and limited. For example, it can be a fixed connection or a detachable connection. Connected or integrally connected; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal communication between two components. For those of ordinary skill in the art, the specific meanings of the above-mentioned terms in this application can be understood under specific circumstances.

In addition, the technical features involved in the different embodiments of the present application described below can be combined with each other as long as they do not conflict with each other.

Example 1

This embodiment provides a gas distribution pipe assembly, which is suitable for connecting with a connecting piece formed with threads on the outside of the end. In this embodiment, as shown in Figures 1-4, the connecting piece is the nozzle 1 or the valve body. The gas distribution pipe assembly includes: a gas distribution pipe 2, a nut 5 sleeved on the gas distribution pipe 2 and a bearing member, wherein the two ends of the gas distribution pipe 2 have the same structure, and both are formed with a bell mouth 3, and the nut 5 is suitable for connecting with the The bearing member is threadedly connected, the bearing member is located between the nut 5 and the bell mouth 3. After the nut 5 is threadedly connected to the connecting member, the bearing member is located between the outer wall of the bell mouth 3 and the Between the inner wall of the nut 5.

In this embodiment, the bearing member is a gasket 4 surrounding the bell mouth 3. To ensure that the outer wall of the bell mouth 3 will not directly contact the inner wall of the nut 5, and protect the bell mouth 3 from being damaged, The gasket 4 matches the shape of the bell mouth 3. As shown in Figure 2, the nut 5 includes a first section 51 that is adapted to the outer diameter of the thread, a second section 52 that is adapted to the outer diameter of the gas manifold 2, and is connected to the second section. A section 51 and a conical transition section 53 of the second section 52. When the nut 5 connects the gas distribution pipe 2 to the connecting piece, at least one outer end of the gasket 4 abuts against the On the inner surface of the nut 5, this arrangement makes the connection between the gas distribution pipe 2 and the nozzle 1 or the valve body reliable and stable.

During the installation of the gas distribution pipe 2, due to the small internal space of the gas stove and cost-saving considerations, the gas distribution pipe 2 needs to be bent into a tortuous three-dimensional space pipe, and the gas distribution pipe 2 needs to be broken by hand to adjust the bell mouth 3 at both ends. Align the valve body and nozzle 1, respectively. If the wall thickness of the gas manifold 2 is too thick and the hand does not move, the installation difficulty will be greatly increased. To avoid this situation, it is convenient to adjust and install the gas manifold 2. In this embodiment, The gas distribution pipe 2 adopts an alloy material gas pipe, and the wall thickness of the two ends of the gas distribution pipe 2 is greater than the wall thickness of the middle pipe section.

When actually connecting and installing, adjust the two ends of the air distribution pipe 2 so that the bell mouths 3 at both ends are aligned with the valve body and the nozzle 1, and then tighten the nuts 5 at both ends. The nuts 5 are tightened due to the bearing parts. Located between the outer wall of the bell mouth 3 and the inner wall of the nut 5, the bearing member replaces the bell mouth 3 to bear the pressing force and destructive torque of the nut 5, and the bearing member transmits the pressing force to the bell mouth 3 evenly, thereby protecting the bell mouth 3 It will not be directly torn by compression force and destructive torsion force to cause gas leakage, thereby ensuring the sealing effect of the gas manifold assembly. After using the gas distribution pipe assembly provided by this embodiment, the leakage rate of the connection between the gas distribution pipe 2 and the valve body and the nozzle 1 can be reduced from about 1.5% to less than 0.3% under the condition that the process and other conditions are not changed.

In an alternative embodiment, the spacer 4 can be replaced with a bearing member of other structure, such as a plurality of bumps surrounding the bell mouth 3 at intervals.

In an alternative embodiment, the valve body or nozzle 1 can be replaced with other connectors that require a sealed connection.

Example 2

This embodiment provides a gas stove having the gas distribution pipe assembly provided in the above embodiments, wherein the connecting piece connected to one end of the gas distribution pipe assembly is a valve body, and the connection piece connected to the other end of the gas distribution pipe assembly is Nozzle 1, the gas stove has good airtightness and is not prone to gas leakage.

Obviously, the above-mentioned embodiments are merely examples for clear description, and are not intended to limit the implementation. For those of ordinary skill in the art, other changes or changes in different forms can be made on the basis of the above description. It is unnecessary and impossible to list all the implementation methods here. The obvious changes or changes derived from this are still within the scope of protection created by this application.

Claims

A gas distribution pipe assembly is suitable for connecting with a connector formed with threads on the outside of the end, and is characterized in that it comprises:

The air distribution pipe (2), at least one end of which is formed with a bell mouth (3);

The nut (5) is sleeved on the gas distribution pipe (2) and is suitable for threaded connection with the connector;

The bearing member is sleeved on the gas distribution pipe (2) and is located between the nut (5) and the bell mouth (3). After the nut (5) is threadedly connected to the connecting member, The bearing member is located between the outer wall of the bell mouth (3) and the inner wall of the nut (5).
The air distribution pipe assembly according to claim 1, wherein the bearing member is a gasket (4) surrounding the bell mouth (3).
The air distribution pipe assembly according to claim 2, wherein the gasket (4) matches the shape of the bell mouth (3).
The gas distribution pipe assembly according to claim 2, wherein the nut (5) includes a first section (51) that is adapted to the outer diameter of the thread, and is connected to the gas distribution pipe (2). The second section (52) whose outer diameter is adapted to the outer diameter and the conical transition section (53) connecting the first section (51) and the second section (52), the nut (5) When the gas distribution pipe (2) is connected with the connecting piece, at least one outer end of the gasket (4) abuts against the inner surface of the nut (5).
The air distribution pipe assembly according to claim 1, wherein the connecting member is a nozzle (1) or a valve body.
The air distribution pipe assembly according to claim 1, characterized in that the two ends of the air distribution pipe (2) have the same structure, and both are provided with the bell mouth (3), the bearing member and the nut (5).
The gas distribution pipe assembly according to claim 1, wherein the gas distribution pipe (2) is an alloy material gas pipe.
The air distribution pipe assembly according to claim 1, wherein the wall thickness of the two ends of the air distribution pipe (2) is greater than the wall thickness of the middle pipe section.
A gas stove, characterized by having the gas distribution pipe assembly according to any one of claims 1-8, wherein the connecting piece connected to one end of the gas distribution pipe assembly is a valve body connected to the gas distribution pipe assembly The connecting piece at the other end is a nozzle (1).