Flue structure of gas water heater

Abstract

The utility model discloses a flue structure of a gas water heater, which relates to the field of flue structures and comprises a straight pipeline, a check valve is mounted at the end of the straight pipeline, a push rod is slidably mounted at one end, close to the check valve, of the inner wall of the straight pipeline, and two ends of the push rod directly face two valve plates of the check valve respectively. According to the flue structure of the gas water heater, the straight pipeline is provided with the push rod and the push assembly, and when a valve plate of a check valve cannot be normally opened due to adhesion when the gas water heater is not used for a long time, the push assembly can be operated to drive the push rod to push the valve plate of the check valve under the condition that the straight pipeline and the check valve are not disassembled, so that the valve plate of the check valve can be normally opened; compared with a traditional method, the smoke exhaust device has the advantages that operation is more convenient, and the problem of adhesion of the valve plate is better solved.

Description

Technical Field

[0001] The utility model relates to the field of flue structures, in particular to a flue structure of a gas water heater. Background Art

[0002] Gas water heaters use gas to burn the heat exchanger to heat the hot water, and are equipped with an air pump to blow air into the combustion chamber, one is to provide the oxygen required for combustion, the other is to facilitate the exhaust of the smoke after combustion into the flue;

[0003] The existing flue specifically includes a curved pipe, a straight pipe and a check valve at the end. The check valve ensures that no reverse airflow is generated at the end of the flue, but the valve plate of the check valve is prone to accumulate sticky substances in the discharged flue gas when used for a long time. This causes the valve plate and the valve seat to stick together after the gas water heater has been shut down for a period of time. The next time it is started after a long interval, it is easy for the valve plate to not be able to open smoothly, thus causing the flue to be blocked and unable to exhaust smoke normally. The traditional method requires disassembling the straight pipe and the check valve, separating the two and then manually pushing the valve plate to force it to open, but this operation is cumbersome. Utility Model Content

[0004] In order to remedy the deficiencies of the prior art, the purpose of the present invention is to provide a flue structure of a gas water heater that can facilitate forcing the valve plate of a check valve to open.

[0005] In order to solve the problems of the prior art, the technical solutions of the present utility model are as follows:

[0006] A flue structure for a gas water heater comprises a straight pipe with a check valve installed at the end of the straight pipe;

[0007] A push rod is slidably mounted on one end of the inner wall of the straight pipe close to the check valve, with both ends of the push rod facing the two valve plates of the check valve respectively, and the push rod can slide along the axial direction of the straight pipe;

[0008] A pushing component is installed on the inner wall of the straight pipe, and the pushing component is used to drive the push rod to slide, forcing the valve plate of the check valve to rotate and open.

[0009] Preferably, two pairs of sliding sleeves are symmetrically fixed to the inner wall of the straight pipe, the push rod is arranged in a U shape, and both ends of the push rod are respectively plugged into the two pairs of sliding sleeves.

[0010] Preferably, the pushing assembly includes a rotating shaft rotatably mounted on the side wall of the straight pipe and perpendicular to the push rod, the upper end of the rotating shaft is formed with a horizontal bending portion extending in the horizontal direction toward the side away from the check valve, the end of the horizontal bending portion away from the rotating shaft is formed with a longitudinal bending portion extending upward, a driving frame is fixed to one end of the push rod close to the longitudinal bending portion, the longitudinal bending portion is inserted in the driving frame, the bottom of the rotating shaft passes through the straight pipe and extends to the outside of the straight pipe and is fixed with a knob, and the lower end of the rotating shaft is located at the outer part of the straight pipe and is equipped with an elastic rotating assembly.

[0011] Preferably, the elastic rotating assembly includes a rotating disk mounted on the outside of the lower end of the rotating shaft, the rotating disk is fixed to the outer wall of the straight pipe, a fan-shaped groove is formed on the outer wall of the rotating disk facing away from the straight pipe, a toggle plate is placed in the fan-shaped groove, the end of the toggle plate is fixed to the outer wall of the rotating shaft, and a spring is fixed between the end of the toggle plate and the inner wall of the fan-shaped groove.

[0012] Preferably, the knob has a cavity, and the turntable is inserted into the cavity of the knob.

[0013] Preferably, the straight pipe is composed of two symmetrically arranged semicircular plates fixed to each other, two pairs of sliding sleeves are fixed on one of the semicircular plates, and the rotating shaft and the turntable are also fixed on one of the semicircular plates.

[0014] Compared with the prior art, the advantages of the present invention are as follows:

[0015] By setting a push rod and a pushing assembly, when the valve plate of the check valve is stuck and cannot be opened normally due to the gas water heater not being used for a long time, the pushing assembly can be operated to drive the push rod to push the valve plate of the check valve without disassembling the straight pipe and the check valve, so that the valve plate and the valve seat are separated, so that the smoke exhaust work can continue normally. Compared with the traditional method, the operation is more convenient and more conducive to solving the problem of valve plate adhesion. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0017] Figure 2 This is a schematic diagram of the valve plate position of the present utility model.

[0018] Figure 3 For this utility model Figure 2 Enlarged view of point A.

[0019] Figure 4 This is a schematic diagram of the turntable of the present utility model.

[0020] Figure 5 For this utility model Figure 4 Enlarged view of point B.

[0021] Figure 6 This is a schematic diagram of the knob structure of the present utility model.

[0022] Figure 7 This is a structural diagram of embodiment 2 of the present utility model.

[0023] Figure numerals: 1, straight pipe; 101, semicircular plate; 2, check valve; 201, valve plate; 3, push rod; 4, sliding sleeve; 5, rotating shaft; 6, horizontal bending portion; 7, longitudinal bending portion; 8, driving frame; 9, knob; 10, turntable; 1001, fan-shaped groove; 11, toggle plate; 12, spring. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0025] For example 1, please refer to Figures 1 to 6 , this embodiment provides a flue structure of a gas water heater, comprising a straight pipe 1, a check valve 2 being installed at the end of the straight pipe 1;

[0026] A straight pipe 1 connected to the check valve 2 is connected to the smoke outlet of the gas water heater through multiple series-connected straight pipes 1 and elbows at one end thereof facing away from the check valve 2. The smoke generated by the gas water heater is discharged through the multiple series-connected pipes to the check valve 2.

[0027] A push rod 3 is slidably mounted on one end of the inner wall of the straight pipe 1 near the check valve 2. Two pairs of sliding sleeves 4 are symmetrically fixed to the inner wall of the straight pipe 1. The push rod 3 is U-shaped, and the two ends of the push rod 3 are respectively plugged into the two pairs of sliding sleeves 4. The two ends of the push rod 3 are respectively facing the two valve plates 201 of the check valve 2. The push rod 3 can slide along the axial direction of the straight pipe 1.

[0028] A rotating shaft 5 perpendicular to the push rod 3 is installed on the side wall of the straight pipe 1. The upper end of the rotating shaft 5 is formed with a horizontal bending portion 6 extending in the horizontal direction away from the check valve 2. The end of the horizontal bending portion 6 away from the rotating shaft 5 is formed with a longitudinal bending portion 7 extending upward. A driving frame 8 is fixed to the end of the push rod 3 close to the longitudinal bending portion 7. The longitudinal bending portion 7 is inserted into the driving frame 8. The bottom of the rotating shaft 5 passes through the straight pipe 1 and extends to the outside of the straight pipe 1 and is fixed with a knob 9.

[0029] When the push rod 3 needs to be driven, the knob 9 is turned to drive the rotating shaft 5 to rotate, thereby causing the longitudinal bent portion 7 to rotate around the axis of the rotating shaft 5. The longitudinal bent portion 7 drives the driving frame 8 to translate, thereby pushing the push rod 3 to slide. The push rod 3 pushes the valve plate 201 toward the side close to the valve plate 201, forcing the valve plate 201 to open, thereby solving the problem of the valve plate 201 sticking. Subsequently, when the gas water heater is turned on and used, the valve plate 201 can be ensured to open smoothly.

[0030] A rotary disk 10 is sleeved on the outer side of the lower end of the rotating shaft 5. The knob 9 has a cavity. The rotary disk 10 is inserted into the cavity of the knob 9. There is a gap between the rotary disk 10 and the inner wall of the cavity. The rotary disk 10 is fixed to the outer wall of the straight pipe 1. A fan-shaped groove 1001 is formed on the outer wall of the rotary disk 10 facing away from the straight pipe 1. A toggle plate 11 is placed in the fan-shaped groove 1001. The end of the toggle plate 11 is fixed to the outer wall of the rotating shaft 5. A spring 12 is fixed between the end of the toggle plate 11 and the inner wall of the fan-shaped groove 1001.

[0031] When the knob 9 is turned, the rotating shaft 5 rotates, driving the toggle plate 11 to slide on the inner wall of the fan-shaped groove 1001 to squeeze the spring 12 to store force. When the knob 9 is released, the rebound force of the spring 12 pushes the toggle plate 11 to return to its original position. One side of the toggle plate 11 contacts the inner wall of the fan-shaped groove 1001, and the longitudinal bending portion 7 is also restored.

[0032] For example 1, please refer to Figure 7 This embodiment provides a further technical solution based on the first embodiment. The straight pipe 1 is composed of two symmetrically arranged semicircular plates 101 fixed to each other. Two pairs of sliding sleeves 4 are fixed on one of the semicircular plates 101. The rotating shaft 5 and the turntable 10 are also fixed on one of the semicircular plates 101, which can facilitate the assembly of the straight pipe 1 and the installation of various components in the straight pipe 1.

[0033] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A flue structure of a gas water heater, characterized in that: It comprises a straight pipe (1), and a check valve (2) is installed at the end of the straight pipe (1); A push rod (3) is slidably mounted on one end of the inner wall of the straight pipe (1) near the check valve (2), with the two ends of the push rod (3) facing the two valve plates (201) of the check valve (2) respectively. The push rod (3) can slide along the axial direction of the straight pipe (1); A pushing assembly is installed on the inner wall of the straight pipe (1), and the pushing assembly is used to drive the push rod (3) to slide, forcing the valve plate (201) of the check valve (2) to rotate and open.

2. The flue structure of the gas water heater according to claim 1, characterized in that: Two pairs of sliding sleeves (4) are symmetrically fixed to the inner wall of the straight pipe (1); the push rod (3) is arranged in a U shape; and both ends of the push rod (3) are respectively plugged into the two pairs of sliding sleeves (4).

3. The flue structure of the gas water heater according to claim 1, characterized in that: The pushing assembly includes a rotating shaft (5) rotatably mounted on the side wall of the straight pipe (1) and arranged perpendicular to the push rod (3); the upper end of the rotating shaft (5) is formed with a horizontal bending portion (6) extending in the horizontal direction toward the side away from the check valve (2); the end of the horizontal bending portion (6) away from the rotating shaft (5) is formed with a longitudinal bending portion (7) extending upward; a driving frame (8) is fixed to one end of the push rod (3) close to the longitudinal bending portion (7); the longitudinal bending portion (7) is inserted into the driving frame (8); the bottom of the rotating shaft (5) passes through the straight pipe (1) and extends to the outside of the straight pipe (1) and is fixed with a knob (9); the lower end of the rotating shaft (5) is located on the outside of the straight pipe (1) and is installed with an elastic rotating assembly.

4. The flue structure of the gas water heater according to claim 3, characterized in that: The elastic rotary assembly comprises a rotary disc (10) sleeved on the outer side of the lower end of the rotating shaft (5), the rotary disc (10) being fixed to the outer wall of the straight pipe (1), a fan-shaped groove (1001) being formed on the outer wall of the rotary disc (10) facing away from the straight pipe (1), a toggle plate (11) being placed in the fan-shaped groove (1001), an end of the toggle plate (11) being fixed to the outer wall of the rotating shaft (5), and a spring (12) being fixed between the end of the toggle plate (11) and the inner wall of the fan-shaped groove (1001).

5. The flue structure of the gas water heater according to claim 4, characterized in that: The knob (9) has a cavity, and the rotary disk (10) is inserted into the cavity of the knob (9).

6. The flue structure of the gas water heater according to claim 2 or claim 5, characterized in that: The straight pipe (1) is composed of two symmetrically arranged semicircular plates (101) fixed to each other, two pairs of sliding sleeves (4) are fixed on one of the semicircular plates (101), and the rotating shaft (5) and the rotating disk (10) are also fixed on one of the semicircular plates (101).

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