CN211876377U

CN211876377U - Gas equipment

Info

Publication number: CN211876377U
Application number: CN201922206040.2U
Authority: CN
Inventors: 李龙; 杜小文; 李晓强; 杨万沔
Original assignee: Midea Group Co Ltd; Wuhu Midea Kitchen and Bath Appliances Manufacturing Co Ltd
Current assignee: Midea Group Co Ltd; Wuhu Midea Kitchen and Bath Appliances Manufacturing Co Ltd
Priority date: 2019-12-10
Filing date: 2019-12-10
Publication date: 2020-11-06
Anticipated expiration: 2029-12-10

Abstract

The utility model discloses a gas equipment, include: the combustion chamber is formed by the front side plate, the left side plate, the rear side plate and the right side plate; the heat exchange assembly is arranged on the box body, and at least one part of the heat exchange assembly is arranged in the combustion chamber; the heat insulating board, heat insulating board interval set up in the inboard of box to constitute the forced air cooling passageway that has fresh air inlet and exhaust vent, forced air cooling passageway wraps up and places in the combustion chamber in at least one side of combustion chamber according to the utility model discloses gas equipment sets up heat transfer assembly on the box and at least partly in, and comes the outside transmission of separation heat through the forced air cooling passageway, compares and sets up the coil pipe in traditional heat transfer assembly outside the shell, the utility model discloses gas equipment's heat transfer assembly structure and technology are simpler and be difficult to the frost crack or the problem of dripping appear.

Description

Gas equipment

Technical Field

The utility model relates to a water heater technical field, more specifically relates to a gas equipment.

Background

The gas appliance of a conventional gas water heater generally includes: the box and heat exchange assembly, heat exchange assembly mainly by the fin with wear to establish the heat exchange tube constitution of fin, wherein, the box adopts anaerobic copper material usually, in order to cool down to the box surface, avoids the heat to externally radiate and harm spare part, the coil pipe is usually around establishing in the outside of box, reduces box surface temperature through the coil pipe.

However, the structure of the gas equipment has the problems of complex process and high cost, condensate water is easy to appear at the coil pipe, and the coil pipe is easy to generate frost cracking, corrosion and perforation and the like under the severe using environment.

SUMMERY OF THE UTILITY MODEL

The utility model discloses aim at solving one of above-mentioned technical problem to a certain extent at least.

Therefore, the utility model provides a gas equipment, this gas equipment have reduced the use of coil pipe, form the forced air cooling passageway through the outside at heat exchange assemblies and come the internal heat of separation box to external radiation, have simplified gas equipment's production technology.

According to utility model embodiment's gas equipment includes: the combustion chamber is characterized by comprising a box body, wherein the box body comprises a front side plate, a left side plate, a rear side plate and a right side plate which are sequentially connected, and an upward open combustion chamber is formed by the front side plate, the left side plate, the rear side plate and the right side plate; the heat exchange assembly is arranged on the box body, and at least one part of the heat exchange assembly is arranged in the combustion chamber; the heat insulation plates are arranged on the inner side of the box body at intervals, so that an air cooling channel with an air inlet hole and an air outlet hole is formed, and the air cooling channel is wrapped on at least one side of the combustion chamber.

According to the utility model discloses gas equipment sets up heat exchange assembly on the box and place in at least partly in the combustion chamber to come the outside transmission of separation heat through the forced air cooling passageway, compare in traditional heat exchange assembly set up the coil pipe outside the shell, the utility model discloses gas equipment's heat exchange assembly structure and technology are simpler and be difficult to the frost crack or the problem of dripping.

In addition, according to the utility model discloses gas equipment, can also have following additional technical characterstic:

the utility model discloses an in some embodiments, the left side board and the right side board of box form the breach respectively, heat exchange assemblies's the left and right sides end is blocked respectively and is located in the breach.

In some embodiments of the present invention, the heat exchange assembly comprises: the first end plate assembly and the second end plate assembly are respectively clamped in the notches; a fin located between the first end plate assembly and the second end plate assembly; the heat exchange tube penetrates through the fins, and two ends of the heat exchange tube are respectively connected to the first end plate assembly and the second end plate assembly.

In an alternative example, the first end plate assembly includes: the first inner end plate and the first outer end plate are mutually connected, and the first inner end plate and the first outer end plate jointly define a first heat dissipation water cavity; the second end plate assembly includes: the first heat dissipation water cavity is communicated with the second heat dissipation water cavity through a heat exchange tube, wherein a water inlet tube of the heat exchange assembly is communicated with the first heat dissipation water cavity or the second heat dissipation water cavity, and a water outlet tube of the heat exchange assembly is communicated with the second heat dissipation water cavity or the first heat dissipation water cavity.

In a further optional example, the first heat dissipation water cavity and the second heat dissipation water cavity each include a plurality of small water cavities communicated with each other, and each of the small water cavities is communicated with at least one heat exchange pipe.

In a specific embodiment, the small water cavities comprise a plurality of rows distributed up and down, one of the first end plate assembly and the second end plate assembly defines a communicating water cavity, and the communicating water cavity communicates the small water cavities distributed up and down.

Furthermore, the small water cavities comprise two rows which are distributed up and down, wherein one row of the small water cavities is connected with the water inlet pipe of the heat exchange assembly, and the other row of the small water cavities is connected with the water outlet pipe of the heat exchange assembly.

In some embodiments of the present invention, the gas appliance further comprises a heat sink, the heat sink is disposed on the heat insulation plate, and the heat sink faces the air cooling channel and is provided with a plurality of convex hulls.

In an optional embodiment, the air cooling channel flows from bottom to top, an air inlet hole of the air cooling channel is lower than a combustion surface of a combustor of the gas equipment, and an air outlet hole of the air cooling channel is higher than the heat exchange assembly and is communicated with a smoke collecting hood of the gas equipment.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

fig. 1 is a schematic structural view of a gas-fired device according to some embodiments of the present invention;

FIG. 2 is a front-to-back cross-sectional view of the gas appliance of FIG. 1;

FIG. 3 is an enlarged view at B in FIG. 2;

FIG. 4 is an enlarged view at C of FIG. 2;

FIG. 5 is a cross-sectional view of the gas appliance of FIG. 1 in a left-right direction;

FIG. 6 is an angled view of the housing of FIG. 1;

FIG. 7 is a schematic view of another angle of the case of FIG. 1;

fig. 8 is a cross-sectional view of a heat exchange assembly according to some embodiments of the present invention;

FIG. 9 is an angled schematic view of the heat exchange assembly of FIG. 8;

FIG. 10 is a schematic view of the heat exchange assembly of FIG. 8 from another angle;

FIG. 11 is a schematic structural view of the first or second inner end plate of FIG. 8;

fig. 12 is a schematic view of a heat shield according to some embodiments of the present invention;

fig. 13 is a schematic view of an insulated panel according to further embodiments of the present invention.

Reference numerals:

a gas appliance 100;

a case 10; a front side plate 11, a left side plate 12; a rear side plate 13; a right side plate 14; a notch 15;

a combustion chamber 20;

a heat exchange assembly 30; a first end plate assembly 31; a first inner end plate 311; a first outer end plate 312; a first heat-dissipating water chamber 313; a second end plate assembly 32; second inner end plate 321; a second outer end plate 322; a second heat-dissipating water chamber 323; the fins 33; a heat exchange pipe 34; a small water chamber 351; a communicating water chamber 352; a water inlet pipe 36; a water outlet pipe 37; a through hole 381;

a heat insulating board 40;

an air-cooled channel 50; an air inlet hole 51; an air outlet 52;

a heat sink 60; a convex hull 61;

the smoke collection hood 70.

A fan 80;

a burner 90; a fire grate 91; fire row support 92.

Detailed Description

Reference will now be made in detail to the embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present invention, and should not be construed as limiting the present invention.

Referring now to fig. 1 to 13, a gas appliance 100 according to an embodiment of the present invention will be described, the gas appliance 100 including a case 10, a heat exchange assembly 30, and a heat insulation plate 40.

Specifically, as shown in fig. 1-2, 5-7, the casing 10 includes a front plate 11, a left plate 12, a rear plate 13, and a right plate 14 connected in sequence, and a combustion chamber 20 opened upward is defined by the front plate 11, the left plate 12, the rear plate 13, and the right plate 14. It can be understood that, for the strong-drum type gas appliance 100, the casing 10 is externally provided with a fan 80 for supplying air into the combustion chamber 20, the lower portion of the combustion chamber 20 is provided with a burner 90, high-temperature flue gas generated by combustion of the burner 90 and insufficiently combusted gas flow upward and are further sufficiently combusted at the upper portion of the combustion chamber 20, and water in the heat exchange assembly 30 is heated by means of the high-temperature flue gas. However, the gas appliance 100 of the present invention is not limited to the forced-draft type gas appliance 100, and may be a forced-draft type gas appliance 100.

The heat exchange assembly 30 is disposed on the case 10 and at least partially embedded in the combustion chamber 20. In other words, the heat exchange unit 30 is mounted on the casing 10 such that the gas appliance 100 overlaps at least a part of the combustion chamber 20 in the vertical direction. That is to say, compare in the top that traditional gas equipment 100 connects heat exchange assembly 30 to box 10, the heat exchange assembly 30 and the box 10 of gas equipment 100 of the embodiment of the utility model are connected in week.

Wherein, the gas equipment 100 can be completely built in the combustion chamber 20, i.e. the heat exchange assembly 30 is wrapped inside the box 10; or one part of the heat exchange assembly 30 is arranged in the combustion chamber 20, and the other part is arranged in the combustion chamber 20, for example, the width of the front-back direction of the heat assembly 30 is smaller than the width of the front-back direction of the box body 10, the left end and the right end of the heat exchange assembly 30 are connected with the box body 10 in a sealing manner, for example, the width of the left-right direction of the heat exchange assembly 30 is smaller than the width of the left-right direction of the cavity, and the front end and the back end of the heat exchange assembly 30. Because at least partly by box 10 wraps in heat exchange assembly 30's the outside, consequently, compare in traditional heat exchange assembly 30 and independently set up the shell, the utility model discloses heat exchange assembly 30's simple structure, weight is lighter, low in manufacturing cost, and when heat exchange assembly 30 broke down and need change, the replacement cost also reduced.

The insulation panels 40 are spaced apart from each other inside the cabinet 10 to form an air-cooled duct 50 having an air inlet hole 51 and an air outlet hole 52, and the air-cooled duct 50 is wrapped around at least one side of the gas appliance 100. Thus, the heat insulation plate 40 forms a heat insulation wall on the inner side of the cabinet 10 to reduce heat transfer to the cabinet 10, and forms an air insulation layer by flowing cool air in the air cooling passage 50 to further reduce heat transfer to the cabinet 10. By the double heat insulation and resistance of the heat insulation plate 40 and the air cooling passage 50, the amount of heat transferred to the outside from the cabinet 10 is controlled, thereby preventing the parts of the gas appliance 100 from being damaged by heat.

It should be noted that the air-cooled duct 50 may only be wrapped around one side, two sides, three sides or four sides of the combustion chamber 20, and in the case that the distance from the lateral side of the burner 90 to the inner side of the box 10 is large, the heat transfer from the high-temperature flue gas generated by the burner 90 to the corresponding side wall of the box 10 may be small, and in view of the cost saving, the air-cooled duct 50 formed by disposing the heat insulation board 40 inside the box 10 may be eliminated.

In short, according to the utility model discloses gas equipment 100 sets up heat exchange assembly 30 on box 10 and at least partly place in combustion chamber 20 in to come the outside transmission of separation heat through forced air cooling passageway 50, compare in traditional heat exchange assembly 30 set up the coil pipe outside the shell, the utility model discloses gas equipment 100's heat exchange assembly 30 structure and technology are simpler and be difficult to appear frost crack or the problem of dripping.

In some embodiments of the present invention, as shown in fig. 5 and fig. 7, the left side plate 12 and the right side plate 14 of the box 10 form a gap 15, and the left end and the right end of the heat exchange assembly 30 are clamped in the gap 15. Namely, the heat exchange assembly 30 is assembled on the box body 10, and the left and right ends of the heat exchange assembly 30 are connected with the box body 10 to form a whole. In other words, the left and right ends of the heat exchange assembly 30 are enclosed with the side plates of the case 10 to form a whole, and the main body part of the heat exchange assembly 30 is disposed in the combustion chamber 20. In the strong drum type gas appliance 100, in order to ensure the sealing performance of the box body 10, the two ends of the heat exchange assembly 30 are the same as the shape and size of the notch 15, and the heat exchange assembly 30 and the box body 10 can be connected in a welding manner.

In an alternative embodiment, as shown in fig. 2, 5 and 8, the heat exchange assembly 30 includes a first end plate assembly 31, a second end plate assembly 32, fins 33 and heat exchange tubes 34. The heat exchange assembly 30 is snap fit into the gap 15 by the first end plate assembly 31 and the second end plate assembly 32. The fins 33 are located between the first end plate assembly 31 and the second end plate assembly 32. The heat exchange pipe 34 penetrates the fins 33, and both ends of the heat exchange pipe 34 are connected to the first end plate assembly 31 and the second end plate assembly 32, respectively. The heat exchange assembly 30 is simple in structure without a coil pipe structure at the outer side.

In a further alternative example, as shown in fig. 8-10, the first end plate assembly 31 includes: a first inner end plate 311 and a first outer end plate 312 connected to each other, the first inner end plate 311 and the first outer end plate 312 together defining a first heat dissipation water chamber 313; the second end plate assembly 32 includes: and a second inner end plate 321 and a second outer end plate 322 which are connected with each other, wherein the second inner end plate 321 and the second outer end plate 322 define a plurality of second heat dissipation water cavities 323 which are communicated with each other, and the first heat dissipation water cavities 313 and the second heat dissipation water cavities 323 are communicated through the heat exchange tubes 34. Wherein, the water inlet pipe 36 of the heat exchange assembly 30 is communicated with the first heat dissipation water cavity 313 or the second heat dissipation water cavity 323, and the water outlet pipe 37 of the heat exchange assembly 30 is communicated with the second heat dissipation water cavity 323 or the first heat dissipation water cavity 313.

In other words, the two ends of the heat exchange assembly 30 form heat dissipation water cavities for blocking heat from diffusing outwards, and water flows into the water inlet pipe 36 and flows out of the water outlet pipe 37 continuously, so that water in the heat dissipation water cavities can be replaced continuously, and the temperature rise of the heat dissipation water cavities at the two ends of the heat exchange assembly 30 is not too high.

Further, as shown in fig. 9 and 10, each of the first and second heat-dissipation water chambers 313 and 323 includes a plurality of small water chambers 351 communicated with each other, and each of the small water chambers 351 is communicated with at least one heat exchange pipe 34. It is understood that each small water chamber 351 may correspond to one or more heat exchange tubes 34, i.e., after the water inlet tube 36 is fed into the small water chamber 351, the small water chamber 351 may lead to one heat exchange tube 34 or more than one heat exchange tube 34.

In the case where the heat exchange module 30 includes a plurality of rows of heat exchange tubes 34 arranged one above another, the small water chambers 351 include a plurality of rows arranged one above another, and one of the first end plate assembly 31 and the second end plate assembly 32 defines the communicating water chambers 352, and the communicating water chambers 352 communicate the small water chambers 351 arranged one above another. It can be understood that the plurality of rows of heat exchange tubes 34 are distributed vertically to increase the heat exchange area and improve the heat exchange efficiency of the heat exchange assembly 30. Wherein the communicating water chamber 352 serves to guide water from one row of the small water chambers 351 to the other row of the small water chambers 351.

In one embodiment, the small water cavities 351 are two rows distributed up and down, wherein one row of the small water cavities 351 is connected with the water inlet pipe 36 of the heat exchange assembly 30, and the other row of the small water cavities 351 is connected with the water outlet pipe 37 of the heat exchange assembly 30. Accordingly, referring to fig. 11, the first or second

inner end plate

311 or 321 is formed with two rows of through holes 381, each through hole 381 corresponding to one heat exchange pipe 34, i.e., the heat exchange pipe 34 is positioned by the first or second

inner end plate

311 or 321 such that the heat exchange pipes 34 can maintain a predetermined interval.

In other embodiments of the present invention, as shown in fig. 5, 12 and 13, the gas appliance 100 further comprises a heat sink 60. The heat sink 60 is provided on the heat insulating plate 40, and the heat sink 60 is provided with a plurality of convex hulls 61 protruding toward the air-cooling duct 50. The heat of the heat insulation board 40 can be transferred to the convex hull 61 and exchange heat with the air in the air-cooled channel 50 through the convex hull 61, wherein the convex hull 61 has an oval or square shape. It is understood that the shape of the convex hull 61 is not limited to the above, and the convex hull 61 may also be a polygon or other irregular shape.

Of course, the convex hull 61 may be formed by the heat insulation board 40 through a profiling manner without additionally adding the heat insulation board 40.

In other embodiments of the present invention, as shown in fig. 2 in conjunction with fig. 3 and 4, the air cooling channel 50 flows from bottom to top, the air inlet 51 of the air cooling channel 50 is lower than the combustion surface of the burner 90 of the gas appliance 100, and the air outlet 52 of the air cooling channel 50 is higher than the heat exchange assembly 30 and is communicated with the fume collecting hood 70 of the gas appliance 100. That is, air flows from bottom to top under the driving of wind pressure, wherein the air inlet holes 51 may be formed in the heat insulation board 40, specifically, as shown in fig. 2 and 3, a bent board is formed at the end of the heat insulation board 40, the air inlet holes 51 are formed in the bent board, the opening size of the air inlet holes 51 is the gap between the bent board and the inner side of the box 10, or the air inlet holes 51 may be formed in the fire grate support 92, and the air inlet holes communicated with the air cooling channel 50 are formed in the fire grate support 92, as shown in fig. 2 and 4. The size of the air inlet 51 can be determined according to the wind pressure and the distribution ratio of the air flow.

The air inlet hole 51 is arranged below the combustion surface of the combustor 90, so that the temperature of air entering the air cooling channel 50 can be ensured to be lower, and high-temperature smoke generated by the combustor 90 is prevented from mixing into the air cooling channel 50. And set up the exhaust vent 52 as being higher than on the heat exchange assembly 30, so, can directly let in the air in the forced air cooling passageway 50 in the collection petticoat pipe 70, avoid mixing with the regional high temperature flue gas in heat exchange assembly 30, and reduce the regional flue gas temperature in heat exchange assembly 30 to guarantee that heat exchange assembly 30 can be heated fast, improve gas equipment 100's heat exchange efficiency.

In the description of the present invention, it is to be understood that the terms "front", "back", "left", "right", "bottom", "top", "inner", "outer", "upper", "lower", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are used merely for convenience of description and simplification of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly above and obliquely above the second feature, or simply meaning that the first feature is at a lesser level than the second feature.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

Although embodiments of the present invention have been shown and described, it is to be understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that changes, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art without departing from the principles and spirit of the present invention.

Claims

1. A gas-fired appliance, comprising:

the combustion chamber is characterized by comprising a box body, wherein the box body comprises a front side plate, a left side plate, a rear side plate and a right side plate which are sequentially connected, and an upward open combustion chamber is formed by the front side plate, the left side plate, the rear side plate and the right side plate;

the heat exchange assembly is arranged on the box body, and at least one part of the heat exchange assembly is arranged in the combustion chamber;

the heat insulation plates are arranged on the inner side of the box body at intervals, so that an air cooling channel with an air inlet hole and an air outlet hole is formed, and the air cooling channel is wrapped on at least one side of the combustion chamber.

2. The gas equipment as claimed in claim 1, wherein the left side plate and the right side plate of the box body are respectively formed with a notch, and the left end and the right end of the heat exchange assembly are respectively clamped in the notches.

3. The gas fired appliance of claim 2, wherein the heat exchange assembly comprises:

the first end plate assembly and the second end plate assembly are respectively clamped in the notches;

a fin located between the first end plate assembly and the second end plate assembly;

the heat exchange tube penetrates through the fins, and two ends of the heat exchange tube are respectively connected to the first end plate assembly and the second end plate assembly.

4. The gas fired appliance of claim 3, wherein the first end plate assembly comprises: the first inner end plate and the first outer end plate are mutually connected, and the first inner end plate and the first outer end plate jointly define a first heat dissipation water cavity; the second end plate assembly includes: the first heat dissipation water cavity is communicated with the second heat dissipation water cavity through a heat exchange tube, wherein a water inlet tube of the heat exchange assembly is communicated with the first heat dissipation water cavity or the second heat dissipation water cavity, and a water outlet tube of the heat exchange assembly is communicated with the second heat dissipation water cavity or the first heat dissipation water cavity.

5. The gas fired equipment of claim 4, wherein said first and second heat dissipating water chambers each comprise a plurality of interconnected small water chambers, each communicating with at least one heat exchange tube.

6. The gas-fired apparatus according to claim 5, wherein the small water chambers include a plurality of rows distributed up and down, one of the first and second end plate assemblies defining a communicating water chamber communicating the small water chambers distributed up and down.

7. The gas equipment as claimed in claim 6, wherein the small water cavities comprise two rows distributed up and down, wherein one row of the small water cavities is connected with the water inlet pipe of the heat exchange assembly, and the other row of the small water cavities is connected with the water outlet pipe of the heat exchange assembly.

8. The gas-fired device according to claim 1, further comprising a heat sink disposed on said heat shield, said heat sink having a plurality of convex hulls protruding toward said air-cooled channel.

9. The gas fired device of claim 8, wherein the convex hull is oval or square in shape.

10. The gas appliance according to claim 1, wherein the air-cooled channel flows from bottom to top, an air inlet hole of the air-cooled channel is lower than a combustion surface of a burner of the gas appliance, and an air outlet hole of the air-cooled channel is higher than the heat exchange assembly and is communicated with a smoke collecting hood of the gas appliance.