CN211290156U

CN211290156U - Gas appliance

Info

Publication number: CN211290156U
Application number: CN201921504062.0U
Authority: CN
Inventors: 赵之强; 郭子丰
Original assignee: Hong Kong and China Gas Co Ltd
Current assignee: Hong Kong and China Gas Co Ltd
Priority date: 2018-09-10
Filing date: 2019-09-10
Publication date: 2020-08-18
Anticipated expiration: 2029-09-10
Also published as: HK1257470A2

Abstract

A gas appliance, for example, a gas range (10), having a housing (20), the housing (20) having an interior including an upper chamber (210) and a lower chamber (220), an upper gas burner located on the upper chamber (210) for burning to generate heat for cooking food placed above the housing (20), and a lower gas burner (40) located in the lower chamber (220) for burning to generate heat for cooking food placed in the lower chamber (220). A gas delivery system (50) is used to supply gas to the upper and lower gas burners (30, 40) and to control the supply of gas to the upper and lower gas burners (30, 40). The lower chamber (220) has a multi-layered wall structure (222) on at least one side thereof, the multi-layered wall structure (222) including an inner wall (223) and an outer wall (224) spaced apart from each other for retaining heat in the lower chamber (220) during cooking.

Description

Gas appliance

Technical Field

The utility model relates to a gas utensil with be more than a culinary art function.

Background

Gas appliances, such as gas cookers or cookers, are typically designed for one cooking function. Gas cookers with multiple cooking ring seats are known, but these are used to perform the same function, i.e. cooking on the ring seats. Gas cookers that can cook rice are also known, but invariably they are appliances with two cooking ring seats that are spaced further apart to accommodate the cooking facilities between them, occupying a relatively large footprint. Such gas cookers are undesirable in high population density, space-limited locations.

The present invention seeks to mitigate or at least alleviate such problems or disadvantages by providing a new or otherwise improved gas appliance of the relevant type.

SUMMERY OF THE UTILITY MODEL

According to the utility model discloses, a gas utensil is provided, include: a housing having an interior including an upper chamber and a lower chamber; an upper gas burner on the upper chamber for burning to generate heat for cooking food placed above the housing; and a lower gas burner in the lower chamber for burning to generate heat for cooking food placed in the lower chamber. The gas delivery system is used to supply gas to the upper and lower gas burners and to control the gas supplied to the upper and lower gas burners. The lower chamber has a multi-wall structure on at least one side thereof including an inner non-perforated wall and an outer perforated wall spaced apart from one another for retaining heat in the lower chamber during cooking and for promoting heat dissipation from the lower chamber after cooking.

Preferably, the lower chamber has the multi-wall structure on each of left and right sides thereof.

Preferably, the multi-layered wall structure extends across the entire side of the lower chamber.

More preferably, the perforations are in the form of slots.

Even more preferably, the grooves extend in an inclined manner, preferably at an angle of 20 ° to 30 ° with respect to the vertical.

Preferably, the perforations occupy less than 5% of the surface area of the outer wall.

In a preferred construction, the upper chamber has a single layer of side walls on opposite left and right sides thereof.

More preferably, the side wall comprises perforations.

More preferably, each side wall of the upper chamber is integrally formed with a respective outer wall on the same side of the lower chamber.

More preferably, each side wall of the upper chamber and the respective outer wall on the same side of the lower chamber extend on a common imaginary plane.

Preferably, the perforations in each outer wall of the lower chamber and the perforations in the corresponding side wall of the upper chamber are substantially identical in shape, size and arrangement, preferably arranged in horizontal rows.

Preferably, the housing comprises a horizontal partition dividing the interior into an upper chamber and a lower chamber.

Preferably, the lower chamber includes a door at a front side thereof, the door being supported for pivotal movement between a closed position and an open position.

In a preferred embodiment, the lower chamber includes a rear wall structure at a rear side thereof, the rear wall structure including an inner rear wall and an outer rear wall spaced apart from each other, together forming a multi-layered structure for retaining heat in the lower chamber during cooking.

More preferably, both the inner and outer back walls are solid or non-perforated.

Preferably, the gas appliance further comprises a chimney for exhausting exhaust gases from the lower chamber during cooking, the chimney having an inlet communicating with the lower chamber and an outlet open to the ambient environment.

It is further preferred that the flue is arranged at the rear side of the housing, remote from the upper gas burner.

More preferably, the flue extends through or past the upper chamber, the inlet is located at the top of the lower chamber and the outlet is located at the top of the housing.

Even more preferably, the outlet of the flue is arranged to face rearwardly.

Still more preferably, the flue includes a lid having a rear opening at and above the outlet.

Preferably, the gas delivery system comprises a plurality of operational components, at least some of which are located in the upper chamber at or near its corners.

It is further preferred that the operating means comprise gas control valves for the upper and lower gas burners, a spark generator for generating a spark to ignite the gas burners, and a battery compartment associated with the spark generator.

In a preferred embodiment, the gas appliance is a gas range with built-in cooking in the lower chamber.

Drawings

The invention will now be described in more detail, by way of example only, with reference to the accompanying drawings, in which:

fig. 1 is a perspective view of an embodiment of a gas appliance according to the present invention in the form of a gas range;

fig. 2 is a left side view of the gas range of fig. 1;

fig. 3 is a cross-sectional front view of the gas range of fig. 1;

fig. 4 is a cross-sectional left side view of the gas range of fig. 1; and

fig. 5 is a cross-sectional plan view of the gas range of fig. 1.

Detailed Description

Referring to fig. 1 to 5 of the drawings, there is shown a gas appliance embodying the present invention, preferably in the form of, for example, a gas range 10, the gas range 10 including a housing 20, the housing 20 having an interior including an upper chamber 210 and a lower chamber 220, an upper burner 30 located on the upper chamber 210 for burning to generate heat for cooking food placed above the housing 20, and a lower gas burner 40 located in the lower chamber 220 for burning to generate heat for cooking food placed in the lower chamber 220. A gas delivery system 50 is also included for supplying fuel gas (e.g., gas, natural gas, or liquefied petroleum gas) to the upper and

lower gas burners

30, 40 and for controlling the supply of gas to the upper and

lower gas burners

30, 40.

The housing 20 has a substantially rectangular cuboid shape with a horizontal partition 230. The horizontal partition 230 divides the interior of the housing into an upper chamber 210 and a lower chamber 220. The baffle 230 is provided by a solid panel, i.e., a panel without holes or apertures, for separating the upper chamber 210 from the lower chamber 220 when the lower burner 40 is in use. Although the upper chamber 210 is a closed chamber and the lower chamber 220 is accessible through its open front side, the front side is typically closed by a door 229. The door 229 is supported along or about its underside for pivotal movement between a closed position (e.g., when food is being cooked therein) and an open position (e.g., for insertion or retrieval of food).

The gas delivery system 50 is mainly provided by one or more pipes 51, the pipes 51 extending from a gas inlet 52 at the rear of the housing 20 to reach the upper and

lower gas burners

30 and 40 through respective

gas control valves

53 and 54, the

gas control valves

53 and 54 being located at the front of the housing 20 for controlling the operation of the upper and

lower gas burners

30 and 40, in particular the gas supplied thereto.

The gas delivery system 50 includes a plurality of operational components, at least some of which are located in the upper chamber 210 at or near the corners of the upper chamber 210. In addition to the conduit 51 and the

gas control valves

53 and 54, the operating components include a spark generator 55 for generating a spark at one of two adjacent spark heads (not shown) and for igniting the

respective gas burners

30 and 40, and a battery compartment 56 associated with the spark generator 55 for supplying DC power thereto. A battery box 56 is also mounted inside the housing 20 at the corners, as is the spark generator 55, but it may be mounted externally to facilitate battery replacement.

In this particular embodiment, the gas appliance is a gas range 10 with a built-in cooking function provided in the lower chamber 220. In addition to rice, certain other types of food, such as porridge, may be cooked. For cooking, rice is placed in a container, preferably a substantially flat rectangular bowl 60 made of metal, and then slid within the lower chamber 220 onto a support frame disposed above the lower gas burner 40. The door 229 is closed and the lower gas burner 40 is then lit and the rice will be cooked when the appropriate cooking time is over. It should be noted that the upper gas burner 30 may be used independently at any time.

In order for the lower chamber 220 to be able to cook in the manner it was designed for, it is critical to contain the heat from the lower burner 40. This is achieved by the lower chamber 220 having on at least one side thereof a multi-layered wall structure 222, said multi-layered wall structure 222 comprising an inner wall 223 and an outer wall 224 spaced apart from each other for retaining heat in the lower chamber 220 during cooking. In a preferred construction, the lower chamber 220 has the multi-wall structure 222 on each of its left and right sides opposite each other. The multi-layered wall structure 222 extends across the entire side of the lower chamber 220 such that the entire side of the lower chamber 220 is configured to be insulated.

In the illustrated embodiment, each multi-walled structure 222 is a double-walled structure 222 in that it is comprised of only an inner wall 223 and an outer wall 224. The inner wall 223 is solid and is provided by a solid panel, i.e., a panel without holes or apertures, for confining the flame (and associated heat) of the lower burner 40 within the lower chamber 220. Instead, the outer wall 224 comprises perforations in the form of slots 221 which extend in an inclined and co-parallel manner and are preferably inclined at an angle of 20 ° to 30 ° with respect to the vertical.

More specifically, the troughs 221 are preferably arranged in two rows, an upper horizontal row 221A and a lower horizontal row 221B, which are located at substantially the same horizontal level as the upper chamber 210 and the lower chamber 220, respectively. Thus, only the slots 221 in the lower horizontal row 221B are associated with the lower chamber 220, and the slots 221 in the upper horizontal row 221A are for the upper chamber 210. Generally, the perforations 221 on each outer wall 224 of the lower chamber 220 and the perforations 221 on the corresponding side wall 214 of the upper chamber 210 are substantially identical in shape, size, and arrangement.

While the double wall 222 serves to retain cooking heat in the lower chamber 220, its slots 221 through the porous outer wall 224 are designed for at least two functions. First, the groove 221 may prevent overheating inside the lower chamber 220 during cooking. Second, they can promote heat dissipation after cooking. These two functions at first sight appear to be incompatible, but they occur at different times, i.e. during and after cooking, so they are complementary and satisfactorily effective together. In other respects to balance, it has been determined that for the lower chamber 220, the slots 221 in the lower row 221B should occupy less than 5% of the surface area of the outer wall 224.

On its rear side, the lower chamber 220 also includes a rear wall structure 225, the rear wall structure 225 being formed by an inner rear wall 226 and an outer rear wall 227 spaced apart from each other, which together form a multi-layer structure for retaining heat in the lower chamber 220 during cooking. Both the inner rear wall 226 and the outer rear wall 227 are provided by solid plates, i.e. without perforations.

The upper gas burner 30 is located on the upper chamber 210, partially in the upper chamber 210 through a central opening at the top of the upper chamber 210. During operation of the upper gas burner 30, air is drawn from around and up through the upper chamber 210 to support combustion.

The upper chamber 210 has sidewalls 214 on opposite left and right sides thereof, and the sidewalls 214 are single-layered. Each side wall 214 comprises perforations provided by the aforementioned slots 221A to enable air to enter and pass through the upper chamber 210 to support combustion by the upper gas burner 30.

It should be noted that each side wall 214 of the upper chamber 210 is integrally formed with a corresponding outer wall 224 on the same side of the lower chamber 220. More specifically, each sidewall 214 of the upper chamber 210 extends on a common imaginary plane, i.e., coplanar, with a corresponding outer wall 224 on the same side of the lower chamber 220.

In a preferred embodiment as described herein, the gas burner 100 further comprises a flue 230 for exhausting exhaust gases from the lower chamber 220 during cooking. The flue 230 has an inlet 231 communicating with the lower chamber 220 and an outlet 232 open to the ambient environment. The flue 230 is disposed at the rear side of the housing 20, away from the upper gas burner 30 on/in the upper chamber 210. The flue 230 extends through or past the upper chamber 210 with an inlet 231 located at the top of the lower chamber 220. The outlet 232 is located at the top of the housing 20 where it is disposed to face rearward to direct exhaust gases away from a person using the gas burner 10 at the front. This can be done by mounting a lid 233 with a rear opening at and above the outlet 232.

The gas appliance of the present invention, especially the gas range 10 with the above structure, has the main advantage of saving space. Its structure has two gas burners stacked one on top of the other, the upper one operating as usual, while the lower one provides different types of cooking functions, for example cooking, without significantly increasing the footprint, if any, negligible. The utility model discloses a new problem that is used for the heat production of additional culinary art function provides the solution.

The invention has been given by way of example only, and various other modifications and/or alterations to the described embodiments may be made by persons skilled in the art without departing from the scope of the invention as defined in the appended claims.

Claims

1. A gas-fired appliance, comprising:

a housing having an interior including an upper chamber and a lower chamber;

an upper gas burner on the upper chamber for burning to generate heat for cooking food placed above the housing;

a lower gas burner in the lower chamber for burning to generate heat for cooking food placed in the lower chamber; and

a gas delivery system for supplying gas to the upper and lower gas burners and controlling the gas supplied to the upper and lower gas burners;

wherein the lower chamber has a multi-layered wall structure on at least one side thereof, the multi-layered wall structure comprising an inner non-perforated wall and an outer perforated wall spaced apart from each other for retaining heat in the lower chamber during cooking and for promoting heat dissipation of the lower chamber after cooking.

2. The gas-fired appliance according to claim 1, wherein the lower chamber has the multi-wall structure on each of left and right sides thereof.

3. The gas-fired appliance according to claim 1, wherein said multi-wall structure extends across the entire side of said lower chamber.

4. The gas-fired appliance according to claim 1, wherein said perforations are in the form of slots.

5. The gas-fired appliance according to claim 4, wherein said groove extends in an inclined manner.

6. The gas-fired appliance according to claim 5, wherein said groove is inclined at an angle of 20 ° to 30 ° with respect to the vertical.

7. The gas-fired appliance according to any of claims 1 to 6, wherein the perforations occupy less than 5% of the surface area of the outer wall.

8. The gas-fired appliance according to any one of claims 1 to 6, wherein the upper chamber has a single-layered side wall on opposite left and right sides thereof.

9. The gas-fired appliance according to claim 8, wherein said side wall comprises perforations.

10. The gas-fired appliance according to claim 8, wherein each side wall of the upper chamber is integrally formed with a respective outer wall on the same side of the lower chamber.

11. The gas-fired appliance according to claim 8, wherein each side wall of the upper chamber extends on a common imaginary plane with the respective outer wall on the same side of the lower chamber.

12. The gas-fired appliance according to claim 8, wherein the perforations on each outer wall of the lower chamber and the perforations on the corresponding side wall of the upper chamber are identical in shape, size and arrangement.

13. The gas-fired appliance according to claim 12, wherein the perforations on each outer wall of the lower chamber and the perforations on the corresponding side wall of the upper chamber are arranged in a horizontal array.

14. The gas appliance according to any one of claims 1 to 6, wherein said housing comprises a horizontal partition dividing said interior into said upper chamber and said lower chamber.

15. The gas appliance of any one of claims 1 to 6, wherein the lower chamber includes a door at a front side thereof supported for pivotal movement between a closed position and an open position.

16. The gas-fired appliance according to any of claims 1 to 6, wherein the lower chamber comprises a rear wall structure at its rear side, the rear wall structure comprising an inner rear wall and an outer rear wall spaced apart from each other, the inner rear wall and the outer rear wall together forming a multi-layer structure for retaining heat in the lower chamber during cooking.

17. The gas-fired appliance according to claim 16, wherein said inner rear wall and said outer rear wall are both solid or non-perforated.

18. The gas-fired appliance according to any of claims 1 to 6, further comprising a flue for exhausting exhaust gases from the lower chamber during cooking, the flue having an inlet communicating with the lower chamber and an outlet open to the ambient environment.

19. The gas appliance of claim 18, wherein the flue is disposed on a rear side of the housing, remote from the upper gas burner.

20. The gas-fired appliance according to claim 18, wherein said flue extends through or past said upper chamber, said inlet being located at the top of said lower chamber and said outlet being located at the top of said housing.

21. The gas appliance according to claim 20, wherein the outlet of the flue is arranged to face rearward.

22. The gas appliance of claim 21, wherein said flue includes a lid having a rear opening at and above said outlet.

23. The gas-fired appliance according to any one of claims 1 to 6, wherein the gas delivery system comprises a plurality of operating members, wherein at least some of the operating members are located in the upper chamber, at or near corners thereof.

24. The gas appliance according to claim 23, wherein said operating means comprise gas control valves for said upper and lower gas burners, a spark generator for generating a spark to ignite said upper and lower gas burners, and a battery compartment associated with said spark generator.

25. Gas appliance according to any of the claims 1 to 6, characterized in that the gas appliance is a gas cooker provided with built-in cooking function in the lower chamber.