BR-102025017295-A2 - Gas-fired combustion chamber and water heater enclosure

BR102025017295A2BR 102025017295 A2BR102025017295 A2BR 102025017295A2BR-102025017295-A2

Abstract

A combustion chamber enclosure and a gas water heater are disclosed. The combustion chamber enclosure includes a frame, a thermal insulation layer, and an installation bracket. The frame has a combustion chamber inside. The thermal insulation layer is provided on the inner wall of the frame and at least partially encloses the combustion chamber. The installation bracket is provided on the side of the thermal insulation layer away from the inner wall of the frame and covers at least the area of the thermal insulation layer corresponding to the combustion chamber. The installation bracket is fixedly attached to the frame to limit the thermal insulation layer.

Inventors

Li Long
ZHANG JIENING
ZHUANG YUFA
Song Wei
Liu Feng

Assignees

WUHU MIDEA KITCHEN AND BATH APPLIANCES MFG. CO., LTD.
Guangdong Midea Kitchen and Bath Appliances Mfg. Co., Ltd.

Dates

Publication Date: 20260317
Application Date: 20250815
Priority Date: 20240830

Claims (14)

1. Combustion chamber enclosure, characterized in that it comprises: a frame formed with a combustion chamber inside; a layer of thermal insulation provided on an inner wall of the frame and at least partially around the combustion chamber; and a mounting bracket provided on one side of the thermal insulation layer away from the inner wall of the frame and covering at least an area of the thermal insulation layer corresponding to the combustion chamber, wherein the mounting bracket is fixedly connected to the structure to limit the thermal insulation layer.
2. Combustion chamber enclosure, according to claim 1, characterized in that the installation support comprises: a plate body covering a surface of the thermal insulation layer away from the inner wall of the frame; and a flange provided on an edge of the plate body, wherein one end of the flange is connected to the plate body and the other end of the flange extends towards the inner wall of the frame to limit an edge of the thermal insulation layer.
3. Combustion chamber casing, according to claim 2, characterized in that at least one fastening pin is provided on one side of the flange away from the plate body, the fastening pin being fixedly connected to the frame; the fastening handle is provided so as to project towards the frame relative to the flange and there is a gap between the flange and the frame.
4. Combustion chamber casing, according to claim 3, characterized in that: the fastening handle is fixed to the frame by screws or welding; and/or the plate body is provided with a plurality of reinforcing ribs, wherein the plurality of reinforcing ribs is arranged in a horizontal and vertical cross pattern.
5. Combustion chamber casing, according to any one of claims 2 to 4, characterized in that a peripheral edge of the plate body is provided with a flange, wherein the flange is configured to enclose a peripheral edge of the thermal insulation layer.
6. Combustion chamber casing, according to any one of claims 1 to 5, characterized in that the mounting bracket at least encloses a lower edge of the thermal insulation layer.
7. Combustion chamber enclosure, according to any one of claims 1 to 6, characterized in that: the frame has two mounting plates located above the combustion chamber, the two mounting plates being opposite each other for connection with the heat exchanger; the thermal insulation layer extends from a cavity wall of the combustion chamber to the mounting plate to separate the mounting plate from the heat exchanger; and the mounting bracket extends from the combustion chamber to an upper edge of the thermal insulation layer.
8. Combustion chamber casing, according to claim 7, characterized in that the installation support is recessed in a position corresponding to the heat exchanger.
9. Combustion chamber casing, according to any one of claims 1 to 8, characterized in that the frame comprises: a lower frame composed of a back plate and two side plates provided on opposite sides of the back plate, the back plate and the two side plates being closed to form a cavity with an opening on one side; and wherein a cover plate covers the opening and is connected to the two side plates to enclose the lower frame to form the combustion chamber with openings at the upper and lower ends, wherein the thermal insulation layer comprises a first thermal insulation layer and a second thermal insulation layer, wherein the installation support comprises a first installation support and a second installation support, wherein the first thermal insulation layer is limited to an inner wall of the back plate and inner walls of the two side plates through the first installation support, and wherein the second thermal insulation layer is limited to an inner wall of the cover plate through the second installation support.
10. Combustion chamber enclosure, according to claim 9, characterized in that the first layer of thermal insulation is an integrated structure and/or the second layer of thermal insulation is an integrated structure; the first mounting bracket is an integrated structure and/or the second mounting bracket is an integrated structure.
11. Combustion chamber casing, according to any one of claims 1 to 10, characterized in that the thermal insulation layer is a flexible thermal insulation cotton, wherein the flexible thermal insulation cotton is able to swing between the installation support and the frame.
12. Combustion chamber casing, according to claim 11, characterized in that the flexible thermal insulation cotton is silicate fiber or silica fiber or glass fiber, and wherein the flexible thermal insulation cotton has a density of less than 0.2 g/cm3.
13. Gas water heater, characterized in that it comprises: a burner; a heat exchanger; a fan; and the combustion chamber casing, as defined in any one of claims 1 to 12, wherein the heat exchanger is provided above the combustion chamber casing and wherein the burner is provided below the combustion chamber casing; the fan is provided above the heat exchanger or below the burner; the distance between a lower surface of the heat exchanger and a combustion surface of the burner is between 80 mm and 110 mm.
14. The gas water heater according to claim 13, characterized in that a gap D between a lower surface of the thermal insulation layer and the combustion surface of the burner in a height direction is in a range of 8 mm to 12 mm.

Description

FIELD OF TECHNIQUE [0001] This application relates to the field of water heater technology and, in particular, to a combustion chamber casing and a gas water heater. BACKGROUND [0002] A gas water heater refers to a gas-powered device that uses gas as fuel and transfers heat to cold water flowing through a heat exchanger by means of combustion heating to prepare hot water. [0003] As the gas burns in the combustion chamber, the temperature of the combustion chamber casing is relatively high. To prevent the high-temperature thermal energy from the combustion chamber from being transferred outwards and damaging other parts of the gas water heater, it is necessary to cool the combustion chamber casing. [0004] In the related technique, a layer of thermal insulation is provided on the inner wall of the combustion chamber enclosure for insulation and cooling. However, when the device is struck or dropped during transport or handling, the thermal insulation layer is easily damaged or falls off, resulting in low reliability. SUMMARY [0005] The main objective of the present application is to propose a combustion chamber enclosure, which is intended to reduce the surface temperature of the combustion chamber enclosure and improve the reliability of the thermal insulation layer. [0006] To achieve the above objective, the combustion chamber enclosure proposed by this application includes: [0007] a frame formed with a combustion chamber inside; [0008] A layer of thermal insulation provided on an interior wall of the frame and at least partially around the combustion chamber; and [0009] an installation bracket provided on one side of the thermal insulation layer away from the inner wall of the frame and at least covering an area of the thermal insulation layer corresponding to the combustion chamber, the installation bracket is fixedly attached to the frame to limit the thermal insulation layer. [0010] In one embodiment of this application, installation support includes: [0011] a plate body covering a surface of the thermal insulation layer away from the inner wall of the frame; and [0012] A flange is provided on one edge of the plate body, one end of the flange is connected to the plate body and the other end of the flange extends towards the inner wall of the frame to limit one edge of the thermal insulation layer. [0013] In one embodiment of the present application, at least one fastening handle is provided on one side of the flange away from the plate body, the fastening handle is fixedly connected to the frame; [0014] The fastening handle is provided so that it projects towards the frame relative to the flange and there is a gap between the flange and the frame. [0015] In one embodiment of the present application, the fastening handle is attached to the frame by screws or welding; and/or [0016] The plate body is provided with a plurality of reinforcing ribs, the plurality of reinforcing ribs is arranged in a horizontal and vertical cross pattern. [0017] In one embodiment of the present application, a peripheral edge of the plate body is provided with a flange, the flange is configured to enclose a peripheral edge of the thermal insulation layer. [0018] In one embodiment of the present application, the installation support involves at least one lower edge of the thermal insulation layer. [0019] In one embodiment of the present application, the frame has two mounting plates located above the combustion chamber, the two mounting plates are opposite each other for connection with the heat exchanger; [0020] the thermal insulation layer extends from a combustion chamber cavity wall to the mounting plate to separate the mounting plate from the heat exchanger; and [0021] The installation bracket extends from the combustion chamber to an upper edge of the thermal insulation layer. [0022] In one embodiment of the present application, the installation support is excavated in a position corresponding to the heat exchanger. [0023] In one embodiment of the present application, the frame includes: [0024] a lower frame comprising a back plate and two side plates provided on opposite sides of the back plate, the back plate and the two side plates being closed to form a cavity with an opening on one side; and [0025] a cover plate that covers the opening and is connected to the two side plates to enclose the lower frame to form the combustion chamber with openings at the upper and lower ends; [0026] the thermal insulation layer includes a first thermal insulation layer and a second thermal insulation layer, the installation support includes a first installation support and a second installation support, the first thermal insulation layer is limited to an inner wall of the back panel and inner walls of the two side panels through the first installation support, and the second thermal insulation layer is limited to an inner wall of the cover panel through the second installation support. [0027] In one embodiment of the present application