CN215863659U

CN215863659U - Expansion tank and hanging stove

Info

Publication number: CN215863659U
Application number: CN202121742291.3U
Authority: CN
Inventors: 卢宇聪; 龚永路; 郭林林; 梁友新
Original assignee: Guangdong Wanhe Thermal Energy Technology Co Ltd
Current assignee: Guangdong Wanhe Thermal Energy Technology Co Ltd
Priority date: 2021-07-28
Filing date: 2021-07-28
Publication date: 2022-02-18
Anticipated expiration: 2031-07-28

Abstract

The utility model relates to the technical field of wall-mounted furnaces, in particular to an expansion water tank and a wall-mounted furnace. The utility model uses the elastic element to replace nitrogen pressure, does not need to fill nitrogen, and has small occupied space; by utilizing the water pressure of the elastic force stabilizing system, the problem that the existing expansion water tank fails due to nitrogen leakage can be effectively solved.

Description

Expansion tank and hanging stove

Technical Field

The utility model relates to the technical field of wall-mounted furnaces, in particular to an expansion water tank and a wall-mounted furnace.

Background

The volume of an expansion water tank commonly used by the wall-mounted boiler is 6L-8L at present, the shape of the expansion water tank is more regular and is roughly divided into a round shape and a rectangular shape. The existing expansion water tank is formed by riveting a left shell, a right shell and an intermediate elastic diaphragm, then a water nozzle is welded on the water inlet side and an air nozzle is welded on the air inlet side, and nitrogen gas of 1bar is sufficient on the air inlet side after all processes are finished. When the temperature of the wall hanging furnace rises and the water volume of the system expands to raise the pressure, the water of the system extrudes the rubber elastic diaphragm to contract, so that the excessive water caused by the volume expansion enters the expansion water tank to relieve the pressure of the system; when the temperature is reduced, the volume of system water is contracted, and the rubber elastic diaphragm extrudes the system water to the heating system by using the pressure of nitrogen gas on the gas side.

The existing expansion tank has air tightness problems after being used for years or produced originally, and can lead to gradual reduction of nitrogen on the air side or even no pressure, so when the water temperature of a system rises and the pressure rises, system water enters the expansion tank, but when the water temperature of the system drops, a rubber elastic diaphragm in the expansion tank can not utilize the pressure of the nitrogen on the air side to extrude the system water back to the heating system. Expansion tank has lost the effect of invariable system this moment, and when system water pressure risees again, water can pass through the safety valve and discharge the hanging stove outside, and when system water pressure decline back, the protection water pressure that probably is less than the hanging stove will lead to the hanging stove because of the not enough unable start-up procedure of entering of water pressure.

Chinese patent CN201521028226.9 discloses an expansion tank, including oval-shaped left and right shell, a left side, right side shell is one end open-ended cavity, be equipped with annular protruding edge on the accent of left and right shell respectively, sealing connection between two protruding edges, form the cavity between the left and right shell, it is equipped with the rubber membrane to press from both sides between two protruding edges, the rubber membrane separates the cavity for water cavity and air cavity, be equipped with the water injection well choke with the water cavity intercommunication on the left shell, be equipped with the air cock with the air cavity intercommunication on the right shell, be equipped with nitrogen gas in the air cavity, be equipped with the check valve in the air cock. Above-mentioned scheme is through the structural redesign planning to the junction, adopts the mode of rubber membrane with elastic diaphragm, and press from both sides elastic diaphragm moreover and locate between two protruding edges, reinforcing expansion tank's sealing performance, improvement separate the fender effect, improve the life of hanging stove, reduce the fault rate of hanging stove. However, the volume that above-mentioned scheme was not utilized needs to be full of nitrogen gas, and occupation space is big, and when nitrogen gas revealed, expansion tank just lost the function of stable system pressure, hanging stove system water frequently lets out pressure, and last water pressure reduces to hanging stove and produces the trouble, can't operate.

SUMMERY OF THE UTILITY MODEL

The utility model aims to overcome the defects in the prior art and provides an expansion water tank and a wall-mounted furnace, which do not need to be filled with nitrogen, occupy small space and avoid the operation failure of the wall-mounted furnace caused by nitrogen leakage.

In order to solve the technical problems, the utility model adopts the technical scheme that:

the utility model provides an expansion tank, include the box, install in elastic diaphragm and elastic component in the box, elastic diaphragm separates the inside cavity of box for first cavity and second cavity, the box is equipped with the intercommunication the water inlet of second cavity, elastic component locates in the first cavity, and its first end and second end are connected respectively the box inner wall with elastic diaphragm.

According to the expansion water tank, the elastic piece is used for replacing the nitrogen pressure, nitrogen does not need to be filled, and the elastic piece and the base plate occupy small space; by utilizing the water pressure of the elastic force stabilizing system, the problem that the existing expansion water tank fails due to nitrogen leakage can be effectively solved.

In one embodiment, the inner wall of the housing includes a first inner wall facing the first chamber opposite the surface of the elastic diaphragm, and the first end of the elastic member is connected to the first inner wall.

In one embodiment, a first limiting boss is convexly arranged on the first inner wall towards the first chamber, and the first end of the elastic element is sleeved on the first limiting boss;

or, the first inner wall is convexly provided with at least two first limiting bosses towards the first cavity, and the first end of the elastic part is limited between the at least two first limiting bosses.

In one embodiment, the device further comprises an elastic pad, the elastic pad is arranged on the surface of the elastic diaphragm facing the first chamber, and the second end of the elastic element is connected with the elastic pad.

In one embodiment, a second limiting boss is convexly arranged on the surface of the elastic cushion plate, which faces away from the elastic diaphragm, and the second end of the elastic element is sleeved on the second limiting boss;

or the surface of the elastic cushion plate, which is back to the elastic diaphragm, is convexly provided with at least two second limiting bosses, and the second end of the elastic piece is limited between the at least two second limiting bosses.

In one embodiment, the periphery of the elastic cushion plate is bent back to the elastic diaphragm to form a flange, and the height of the flange, which is higher than the surface of the elastic cushion plate facing the first cavity, is greater than the height of the second limiting boss, which is higher than the surface of the elastic cushion plate facing the first cavity.

In one embodiment, the elastic members are provided with at least two elastic members, and a plurality of elastic members are sequentially distributed on the surface of the elastic diaphragm facing the first chamber at equal intervals.

In one embodiment, the elastic member is a pressing spring in a compressed state, and the case includes a second inner wall facing the second chamber and opposite to the surface of the elastic diaphragm, and the pressing spring presses the elastic diaphragm against the second inner wall.

In one embodiment, the water inlet device further comprises a water inlet nozzle, the water inlet nozzle is arranged on the outer wall of the box body and communicated with the water inlet, and one side of the box body, which is close to the water inlet nozzle, protrudes outwards. The utility model also provides a wall-mounted furnace which comprises the expansion water tank.

According to the wall-mounted furnace, the elastic piece is used for replacing the nitrogen pressure in the expansion water tank, nitrogen filling is not needed, the wall-mounted furnace with small size and thin thickness can be developed, and the problem that the existing expansion water tank fails due to nitrogen leakage can be effectively solved.

Compared with the prior art, the utility model has the beneficial effects that:

according to the expansion water tank and the wall-mounted furnace, the elastic piece is used for replacing the nitrogen pressure, the nitrogen is not required to be filled, and the occupied space of the elastic piece and the base plate is small; by utilizing the water pressure of the elastic force stabilizing system, the problem that the existing expansion water tank fails due to nitrogen leakage can be effectively solved.

Drawings

FIG. 1 is a schematic view of an expansion tank in an operating state;

FIG. 2 is a schematic view of the expansion tank in an initial state;

in the drawings: 1. a first cover plate; 11. a first convex edge; 12. a first limit boss; 13. a first inner wall; 14. an exhaust hole; 2. a second cover plate; 21. a second convex edge; 22. a second inner wall; 3. an elastic diaphragm; 31. a third convex edge; 4. a first chamber; 5. a second chamber; 6. a water inlet nozzle; 7. an elastic backing plate; 71. a second limit boss; 72. flanging; 8. an elastic member.

Detailed Description

The present invention will be further described with reference to the following embodiments. Wherein the showings are for the purpose of illustration only and are shown by way of illustration only and not in actual form, and are not to be construed as limiting the present patent; to better illustrate the embodiments of the present invention, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.

The same or similar reference numerals in the drawings of the embodiments of the present invention correspond to the same or similar components; in the description of the present invention, it should be understood that if there is an orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", etc. based on the orientation or positional relationship shown in the drawings, it is only for convenience of describing the present invention and simplifying the description, but it is not intended to indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes and are not to be construed as limiting the present patent, and the specific meaning of the terms may be understood by those skilled in the art according to specific circumstances.

Examples

Fig. 1 to 2 show an embodiment of the expansion tank of the present invention, which includes a tank body, an elastic diaphragm 3 installed in the tank body, and an elastic member 8, wherein the elastic diaphragm 3 divides an internal chamber of the tank body into a first chamber 4 and a second chamber 5, the tank body is provided with a water inlet communicated with the second chamber 5, the elastic member is disposed in the first chamber 4, and a first end and a second end of the elastic member are respectively connected to an inner wall of the tank body and the elastic diaphragm 3. The elastic diaphragm 3 of the present embodiment may be a rubber diaphragm but is not limited to a rubber diaphragm.

The existing expansion water tank which uses nitrogen to inflate 6L-8L has the effective volume of about 2L-2.5L, the volume utilization rate of 30% -40%, and the unused volume is filled with 1bar of nitrogen. In the embodiment, the elastic part 8 is used for replacing nitrogen pressure, nitrogen does not need to be filled, the elastic part 8 occupies small space, the overall size is reduced by more than 1/3 compared with the existing expansion water tank, and the effective volume can reach 2L-2.5L; and this embodiment can not utilize elasticity stable system water pressure because of nitrogen gas reveals and bring hanging stove operation trouble owing to need not to fill nitrogen gas, can effectively solve current expansion tank and reveal the problem that the became invalid because of nitrogen gas.

In one embodiment, the box body comprises a first cover plate 1 and a second cover plate 2 which are connected in a sealing mode, a chamber is formed in the first cover plate 1 and the second cover plate 2, an elastic diaphragm 3 is arranged at the joint of the first cover plate 1 and the second cover plate 2, and the elastic diaphragm 3 divides the chamber into a first chamber 4 and a second chamber 5. Specifically, first apron 1, second apron 2 are one side open-ended cavity, the opening part of first apron 1 is equipped with first protruding edge 11, the opening part of second apron 2 is equipped with second protruding edge 21, first protruding edge 11 and second protruding edge 21 sealing connection. Specifically, in this embodiment, the second convex edge 21 is wound to form a concave cavity, and the first convex edge 11 is embedded in the concave cavity, in order to ensure the sealing performance between the first convex edge 11 and the second convex edge 21, in this embodiment, a plurality of arc-shaped sections may be designed on the inner wall of the concave cavity and the outer wall of the first convex edge 11. The outer edge of the elastic diaphragm 3 is provided with a third convex edge 31, and the third convex edge 31 is embedded between the first convex edge 11 and the second convex edge 21. Specifically, in this embodiment, the second convex edge 21 is wound to form a concave cavity, the first convex edge 11 and the third convex edge 31 are embedded in the concave cavity, in order to ensure the sealing performance among the first convex edge 11, the second convex edge 21 and the third convex edge 31, in this embodiment, a plurality of arc-shaped sections can be designed on the inner wall of the concave cavity, the outer wall of the first convex edge 11 and the outer wall of the third convex edge 31, and the third convex edge 31 can also be designed to be a thickening structure, so that a thickening fastening portion is formed at the end of the third convex edge 31, and the connection stability of the first convex edge 11, the second convex edge 21 and the third convex edge 31 is ensured.

In one embodiment, the inner wall of the box body comprises a first inner wall 13 facing the first chamber 4 and opposite to the surface of the elastic diaphragm 3, and the first end of the elastic member 8 is connected with the first inner wall 13 to ensure the connection stability of the elastic member 8.

In one embodiment, the first chamber 4 is provided with a plurality of exhaust holes 14 in communication with the outside atmosphere. The vent 14 is arranged so that the first chamber 4 is the same as the outside, maintaining pressure equilibrium.

In one embodiment, the first limit projection 12 is used to limit the position of the first end of the elastic member 8. Specifically, the first inner wall 13 is convexly provided with a first limiting boss 12 towards the first chamber 4, and the first end of the elastic element 8 is sleeved on the first limiting boss 12; or, the first inner wall 13 is convexly provided with at least two first limiting bosses 12 towards the first chamber 4, and the first end of the elastic element is limited between the at least two first limiting bosses 12.

In one embodiment, the device further comprises an elastic pad 7, wherein the elastic pad 7 is arranged on the surface of the elastic diaphragm 3 facing the first chamber 4, and the second end of the elastic element 8 is connected with the elastic pad 7. In this embodiment, the elastic member 8 is not directly contacted with the elastic diaphragm 3, but is connected with the elastic pad 7, and then the elastic pad 7 acts on the elastic diaphragm 3 to improve the force uniformity of the elastic diaphragm 3.

In one embodiment, the second limit projection 71 is used to limit the position of the second end of the elastic member 8. Specifically, a second limiting boss 71 is convexly arranged on the surface of the elastic cushion plate 7, which is opposite to the elastic diaphragm 3, and the second end of the elastic element 8 is sleeved on the second limiting boss 71; or, the surface of the elastic backing plate 7, which faces away from the elastic diaphragm 3, is convexly provided with at least two second limiting bosses 71, and the second end of the elastic member is limited between the at least two second limiting bosses 71.

In one embodiment, the periphery of the elastic pad 7 is bent back to the elastic diaphragm 3 to form a flange 72, and the height of the flange 72 from the surface of the elastic pad 7 facing the first chamber 4 is greater than the height of the second limit projection 71 from the surface of the elastic pad 7 facing the first chamber. The relative height of the flange 72 and the second limit boss 71 can avoid the collision between the elastic cushion plate 7 and the first limit boss 12 and the damage caused by the over-compression of the elastic element 8.

In one embodiment, the elastic members 8 are provided with at least two, and a plurality of elastic members 8 are sequentially distributed on the surface of the elastic diaphragm 3 facing the first chamber 4 at equal intervals. At least two elastic members 8 are arranged, so that the pressure can be uniformly dispersed, and the load borne by each elastic member 8 is reduced.

In one embodiment, the elastic member 8 is a compression spring in a compressed state, and the housing comprises a second inner wall 22 facing the second chamber 4 opposite to the surface of the elastic diaphragm, the compression spring compressing the elastic diaphragm against the second inner wall 22. In the initial state, the elastic element 8 exerts a pressure of 1bar on the elastic pad 7 and presses the elastic pad 7, the elastic pad 7 presses the elastic membrane 3, and the elastic membrane 3 is tightly attached to the second cover plate 2, as shown in fig. 2. After the water is supplemented in the hanging stove, the moisturizing pressure is about 1bar, and system's water pressure is unanimous with the pretightning force of elastic component 8, and system's water can't get into in the expansion tank. When the wall-mounted boiler is operated and the pressure is increased due to the volume expansion of system water caused by the temperature increase, the pressure of the system water overcomes the pre-tightening force of the elastic part 8, so that the elastic diaphragm 3 pushes the elastic cushion plate 7 of the elastic part 8 to move towards the first chamber 4, and the excessive water caused by the volume expansion enters the expansion water tank to relieve the pressure of the system; when the temperature is reduced and the water pressure of the system is reduced, the volume of the system water is contracted, at the moment, the resilience force of the elastic piece 8 acts on the elastic base plate 7, and the elastic diaphragm 3 is pushed to extrude the water in the expansion water tank back to the wall-hanging furnace system, so that the system pressure is stabilized. In addition, as shown in fig. 1, when the system water pressure reaches 3bar, the volume of water entering the expansion tank is 2L-2.5L, so as to meet the regulation of the effective volume of the existing 6L-8L expansion tank.

In one embodiment, the water storage tank further comprises a water inlet nozzle 6, the water inlet nozzle 6 is arranged on the outer wall of the tank body and is communicated with the water inlet, and one side of the tank body, which is close to the water inlet nozzle 6, protrudes outwards. So set up, can increase the installation volume of intake nozzle 6 when the box occupies the volume less.

In another embodiment, the utility model also provides a wall-hanging stove which comprises the expansion water tank. According to the embodiment, the elastic piece 8 is used for replacing nitrogen pressure in the expansion water tank, nitrogen filling is not needed, the development of the wall-mounted furnace with small volume and thin thickness can be facilitated, and the problem that the existing expansion water tank fails due to nitrogen leakage can be effectively solved.

In the detailed description of the embodiments, various technical features may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

It should be understood that the above-described embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. The utility model provides an expansion tank, its characterized in that, include the box, install in elastic diaphragm (3) and elastic component (8) in the box, elastic diaphragm (3) are first cavity (4) and second cavity (5) with the internal chamber partition of box, the box is equipped with the intercommunication the water inlet of second cavity (5), the elastic component is located in first cavity (4), and its first end and second end are connected respectively the box inner wall with elastic diaphragm (3).

2. Expansion tank according to claim 1, characterized in that said tank inner wall comprises a first inner wall (13) facing said first chamber (4) opposite to the surface of said elastic diaphragm (3), said first end of said elastic element being connected to said first inner wall (13).

3. The expansion tank as claimed in claim 2, wherein said first inner wall (13) is provided with a first limit projection (12) projecting toward said first chamber (4), and a first end of said elastic member is sleeved on said first limit projection (12);

or, the first inner wall (13) is convexly provided with at least two first limiting bosses (12) towards the first chamber (4), and the first end of the elastic part is limited between the at least two first limiting bosses (12).

4. Expansion tank according to claim 1, characterized in that it further comprises an elastic pad (7), said elastic pad (7) being provided on the surface of said elastic membrane (3) facing said first chamber (4), said elastic member being connected at its second end to said elastic pad (7).

5. The expansion tank as claimed in claim 4, wherein the surface of the elastic backing plate (7) opposite to the elastic diaphragm (3) is convexly provided with a second limit boss (71), and the second end of the elastic member (8) is sleeved on the second limit boss (71);

or the surface of the elastic cushion plate (7) back to the elastic diaphragm (3) is convexly provided with at least two second limiting bosses (71), and the second end of the elastic piece is limited between the at least two second limiting bosses (71).

6. The expansion tank as claimed in claim 5, characterized in that the periphery of the elastic pad (7) is bent away from the elastic diaphragm (3) to form a flange (72), and the height of the flange (72) above the surface of the elastic pad (7) facing the first chamber (4) is greater than the height of the second limit projection (71) above the surface of the elastic pad (7) facing the first chamber.

7. Expansion tank according to claim 1, characterized in that said elastic means are provided in at least two, a plurality of said elastic means (8) being distributed in sequence and equally spaced on the surface of said elastic diaphragm (3) facing said first chamber (4).

8. Expansion tank according to claim 1, characterized in that said elastic element (8) is a pressing spring in compression, said tank comprising a second inner wall (22) facing said second chamber (5) opposite to said elastic diaphragm surface, said pressing spring pressing said elastic diaphragm against said second inner wall (22).

9. The expansion tank as claimed in claim 1, further comprising a water inlet nozzle (6), wherein the water inlet nozzle (6) is arranged on the outer wall of the tank body and is communicated with the water inlet, and one side of the tank body close to the water inlet nozzle (6) protrudes outwards.

10. A wall hanging stove comprising an expansion tank as claimed in any one of claims 1 to 9.