阅读说明：本技术 一种燃气热水器进水接头及具有该进水接头的燃气热水器 (Water inlet connector of gas water heater and gas water heater with same ) 是由 吴帅 朱海龙 魏苗苗 于 2019-10-29 设计创作，主要内容包括：一种燃气热水器进水接头,其特征在于包括外壳、底座、滑板、连接板及连杆,外壳轴向中空形成内腔并侧向开设有安装孔,该外壳的内腔形成有阀口,底座密封地设于前述安装孔内；滑板能移动地设于前述底座内端面；连接板与前述滑板弹性连接并位于外壳内侧,水压增加状态下能压迫连接板向滑板靠拢；连杆设于前述外壳内腔并前端具有能与前述阀口配合以关闭水流的堵头,该连杆一端与前述连接板连接,另一端则设于前述外壳的定位槽内。本发明还公开了一种燃气热水器。采用纯机械结构,可靠性好,燃气热水器涨裂后及时进水自锁。(A water inlet joint of a gas water heater is characterized by comprising a shell, a base, a sliding plate, a connecting plate and a connecting rod, wherein the shell is axially hollow to form an inner cavity and is laterally provided with a mounting hole; the sliding plate can be movably arranged on the inner end surface of the base; the connecting plate is elastically connected with the sliding plate and is positioned at the inner side of the shell, and the connecting plate can be pressed to be close to the sliding plate under the state that the water pressure is increased; the connecting rod is arranged in the inner cavity of the shell, the front end of the connecting rod is provided with a plug which can be matched with the valve port to close water flow, one end of the connecting rod is connected with the connecting plate, and the other end of the connecting rod is arranged in the positioning groove of the shell. The invention also discloses a gas water heater. The gas water heater adopts a pure mechanical structure, has good reliability, and can automatically lock water after cracking.)

1. A water inlet joint of a gas water heater is characterized by comprising

The valve comprises a shell (1), an inner cavity is formed in the axial hollow mode, a mounting hole (14) is formed in the lateral direction, a valve port (13) is formed in the inner cavity of the shell (1), and a positioning groove (11) is formed in the inner wall of one side, opposite to the mounting hole (14), of the shell (1);

a base (2) hermetically arranged in the mounting hole (14);

the sliding plate (4) is movably arranged on the inner end surface of the base (2);

the connecting plate (5) is elastically connected with the sliding plate (4) and is positioned at the inner side of the shell (1), and the connecting plate (5) can be pressed to be close to the sliding plate (4) under the state of increasing water pressure; and

a connecting rod (3) which is arranged in the inner cavity of the shell (1), the front end of the connecting rod is provided with a plug (31) which can be matched with the valve port (13) to close water flow, one end of the connecting rod (3) is connected with the connecting plate (5), and the other end of the connecting rod is arranged in a positioning groove (11) of the shell (1);

when the water pressure is increased to a preset value, the connecting plate (5) drives the connecting rod (3) to move radially and approach the sliding plate (4), so that the other end of the connecting rod (3) is separated from the positioning groove (11), and the connecting rod (3) moves transversely under the action of the water pressure to drive the sliding plate (4) to slide axially relative to the base (2) so that the plug (31) plugs the valve port (13).

2. The water inlet joint of a gas water heater according to claim 1, characterized in that a compression spring (41) is arranged between the sliding plate (4) and the connecting plate (5).

3. The water inlet joint of the gas water heater according to claim 1 or 2, characterized in that a mounting cavity (12) is formed between the inner end surface of the base (2) and the inner side wall of the shell (1), and the sliding plate (4) and the compression spring (41) are arranged in the mounting cavity (12).

4. A water inlet joint of a gas water heater according to claim 3, characterized in that the sliding plate (4) is provided with a roller (42) which is in rolling contact with the inner side surface of the base (2).

5. The water inlet joint of the gas water heater according to claim 3, characterized in that the two inner side surfaces of the base (2) are provided with bending parts (21) for limiting the connection plate (5) to be separated from the mounting cavity (12).

6. The water inlet joint of the gas water heater according to claim 5, characterized in that the two sides of the connecting plate (5) are provided with convex points (51) which are matched with the bending part (21) in an abutting mode.

7. Gas water heater water inlet joint according to claim 1, characterized in that the connecting rod (3) has a groove (32) on the water facing surface.

8. A gas water heater with the water inlet joint of any one of claims 1 to 7, comprising a machine body (100), wherein a cold water inlet pipe (101) and a cold water outlet pipe (102) are arranged on the machine body (100), and the water inlet joint (10) is provided with the cold water inlet pipe (101).

Technical Field

The invention relates to a water pipe joint, which is applied to a gas water heater and also relates to the gas water heater.

Background

When the water pressure of the user entering the house is too high or the internal pressure is too high due to freezing in cold weather, the risk of the expansion crack of the household gas water heater of the user exists. The water inlet end of the waterway passage of the water heater is a normally open valve, the water outlet end is a normally closed valve, and the inside of the pipeline bears certain water pressure in the non-working state. When the water pressure is too high, the weak pressure-bearing parts of common plastic parts such as water valves and the like can be cracked firstly. If the user does not find that the water inlet valve is closed in time, the whole machine leaks water, and property loss and safety problems such as floor water soaking, electric leakage and the like are caused.

Disclosure of Invention

The first technical problem to be solved by the present invention is to provide a water inlet joint of a gas water heater, which can automatically close water inlet through a mechanical structure when the water pressure is too high.

The second technical problem to be solved by the present invention is to provide a gas water heater capable of automatically closing water inlet through a mechanical structure when the water pressure is too high.

The technical scheme adopted by the invention for solving the first technical problem is as follows: a water inlet joint of a gas water heater is characterized by comprising

The valve comprises a shell, a valve body and a valve seat, wherein the shell is axially hollow to form an inner cavity and is laterally provided with a mounting hole;

the base is hermetically arranged in the mounting hole;

the sliding plate is movably arranged on the inner end surface of the base;

the connecting plate is elastically connected with the sliding plate and is positioned at the inner side of the shell, and the connecting plate can be pressed to be close to the sliding plate under the state that the water pressure is increased; and

a connecting rod which is arranged in the inner cavity of the shell, the front end of the connecting rod is provided with a plug which can be matched with the valve port to close water flow, one end of the connecting rod is connected with the connecting plate, and the other end of the connecting rod is arranged in the positioning groove of the shell;

when the water pressure is increased to a preset value, the connecting plate drives the connecting rod to move radially to approach the sliding plate, so that the other end of the connecting rod is separated from the positioning groove, and the connecting rod moves transversely under the action of the water pressure to drive the sliding plate to slide axially relative to the base, so that the valve port is plugged by the plug.

Preferably, a compression spring is arranged between the sliding plate and the connecting plate.

Furthermore, an installation cavity is formed between the inner end face of the base and the inner side wall of the shell, and the sliding plate and the compression spring are arranged in the installation cavity.

In view of reducing friction, the sliding plate is provided with a roller which is in rolling contact with the inner side surface of the base.

And two side surfaces of the inner side of the base are provided with bending parts for limiting the connecting plate to be separated from the mounting cavity. The bending part plays the role of limiting and guiding.

The both sides of connecting plate are equipped with the bump that offsets the complex with the kink. The salient points can prevent adhesion and ensure that the connecting plate is separated from the bending part.

The upstream surface of the connecting rod is provided with a groove. The groove is beneficial to the stress of the connecting rod, so that the valve port is blocked by fast forward movement.

The technical scheme adopted by the invention for solving the second technical problem is as follows: a gas water heater comprises a machine body, wherein a cold water inlet pipe and a cold water outlet pipe are arranged on the machine body, and a water inlet joint is arranged on the cold water inlet pipe. The water inlet joint has the function of automatically closing water inlet when the water pressure is too high.

Compared with the prior art, the invention has the advantages that: when the water pressure is increased to a preset value, the connecting plate overcomes the elasticity under the action of the water pressure to drive the connecting rod to move radially and approach the sliding plate, so that the other end of the connecting rod is separated from the positioning groove, and the connecting rod moves transversely under the action of the water pressure to drive the sliding plate to slide axially relative to the base so as to plug the valve port by the plug. The gas water heater adopts a pure mechanical structure, has good reliability, and can automatically lock water after the gas water heater cracks; the integral volume is small, the adaptability is high, and the water heater can be used for all water heater products; and the device is suitable for various severe environments (failure caused by overheating or overcooling can not be caused).

Drawings

FIG. 1 is a schematic structural diagram of an embodiment.

FIG. 2 is an enlarged schematic view of the water inlet fitting of FIG. 1.

FIG. 3 is an exploded view of the water inlet fitting of FIG. 2.

Fig. 4 is a schematic view of the base in fig. 3 from another perspective.

Fig. 5 is an enlarged view of a portion a in fig. 3.

Fig. 6 is an enlarged view of a portion B in fig. 3.

FIG. 7 is a schematic view of the water inlet joint after closing.

Detailed Description

The invention is described in further detail below with reference to the accompanying examples.

As shown in fig. 1, the gas water heater in this embodiment includes a body 100, a cold water inlet pipe 101 and a water outlet pipe 102 are disposed on the body 100, and a cold water inlet pipe 101 is disposed on a water inlet joint 10.

As shown in fig. 2 and 3, the water inlet joint in this embodiment includes a housing 1, a base 2, a sliding plate 4, a compression spring 41, a connecting plate 5 and a connecting rod 3, the housing 1 is axially hollow to form an inner cavity and laterally provided with a mounting hole 14, the inner cavity of the housing 1 is formed with a valve port 13, and a positioning groove 11 is provided on an inner wall of the housing 1 on a side opposite to the mounting hole 14.

The base 2 is hermetically provided in the mounting hole 14, and as shown in fig. 4, both inner side surfaces of the base 2 have bent portions 21 for restricting the connection plate 5 from coming off the mounting cavity 12.

The sliding plate 4 is movably arranged on the inner end surface of the base 2; specifically, as shown in fig. 6, the sliding plate 4 is provided with a roller 42 in rolling contact with the inner side surface of the base 2, so that the roller can reduce friction and improve sensitivity.

The compression spring 41 is provided between the slide plate 4 and the connecting plate 5. In this embodiment, a mounting cavity 12 is formed between the inner end surface of the base 2 and the inner side wall of the housing 1, and the sliding plate 4 and the compression spring 41 are disposed in the mounting cavity 12.

The connecting plate 5 is elastically connected with the sliding plate 4 through a compression spring 41 and is positioned at the inner side of the shell 1, and the connecting plate 5 can be pressed to be close to the sliding plate 4 under the state of increasing water pressure; as shown in fig. 5, protruding points 51 that are fitted against the bent portions 21 are provided on both sides of the connecting plate 5.

The connecting rod 3 is arranged in the inner cavity of the shell 1, the front end of the connecting rod is provided with a plug 31 which can be matched with the valve port 13 to close water flow, one end of the connecting rod 3 is connected with the connecting plate 5, and the other end of the connecting rod 3 is arranged in the positioning groove 11 of the shell 1; the connecting rod 3 has a recess 32 on the water-facing surface.

As shown in fig. 2, in the initial state, one end of the connecting rod 3 is limited in the positioning slot 11. When the water pressure increases to a preset value, as shown in fig. 7, the connecting plate 5 overcomes the elastic force of the compression spring 41 to drive the connecting rod 3 to move radially and approach the sliding plate 4, so that the other end of the connecting rod 3 is separated from the positioning slot 11, and the connecting rod 3 moves laterally under the action of the water pressure to drive the sliding plate 4 to slide axially relative to the base 2, so that the plug 31 plugs the valve port 13.

If the water inlet passage needs to be opened again, the water inlet joint needs to be disassembled.