US20140060517A1

US20140060517A1 - Burner

Info

Publication number: US20140060517A1
Application number: US13/985,223
Authority: US
Inventors: Fujia Ren; Weiliang Wu
Original assignee: Hangzhou Robam Appliances Co Ltd
Current assignee: Hangzhou Robam Appliances Co Ltd
Priority date: 2011-02-14
Filing date: 2011-11-24
Publication date: 2014-03-06
Also published as: WO2012109935A1; CN102116476B; CN102116476A

Abstract

A burner comprises a stove core, a fire cover, and a stove plate and stove end. A plurality of stove core fire outlet hole lugs are arranged on the stove core, stove core fire outlet holes are arranged on each of the stove core fire outlet hole lugs, and a stove core air inlet channel is arranged between adjacent stove core fire outlet hole lugs. A plurality of fire cover fire outlet hole lugs are arranged on the fire cover, fire cover fire outlet holes are arranged on each of the fire cover fire outlet hole lugs, a fire cover air inlet channel is arranged between adjacent fire cover fire outlet hole lugs, and the direction of fire outlet position of the stove core fire outlet hole faces the channel opening of the corresponding fire cover air inlet channel. With the flames of the stove core and the flames of the fire cover being crossed by the alternating arrangement of the fire outlet holes, the air contact area is enlarged such that the heat efficiency is improved.

Description

FIELD OF THE INVENTION

The invention relates to burners, in particular to a type of highly efficient, energy-saving, and environment-friendly burners.

BACKGROUND TECHNOLOGY

Nowadays burners are widely used kitchen appliances. The major fire outlet of a conventional burner comprises an outer ring of fire-outlet holes and a middle ring of a few fire-outlet holes. Generally, so as to facilitate effective contact with air in the combustion process, a fire outlet hole with a relatively flat angle is adopted which can increases the distance from the bottom of a wok or directly raise a wok stand; but this arrangement leads to a big loss in heat efficiency. Generally, a conventional burner has a heat efficiency of about 53%, not more than 60%.

SUMMARY OF THE INVENTION

In order to overcome disadvantages of the above-mentioned prior art burner, the present invention provides a type of highly efficient, energy-saving, and environment-friendly burner capable of greatly increasing heat efficiency.
The invention provides the below technical scheme for solving the technical problem in the prior art: A type of highly efficient energy-saving environment-friendly burner, comprising a stove core, a fire cover, and a stove plate and stove end. A plurality of stove core fire outlet hole lugs are arranged on the stove core, stove core fire outlet holes are arranged on each of the stove core fire outlet hole lugs, and a stove core air inlet channel is arranged between adjacent stove core fire outlet hole lugs; a plurality of fire cover fire outlet hole lugs are arranged on the fire cover, fire cover fire outlet holes are arranged on each of the fire cover fire outlet hole lugs, a fire cover air inlet channel is arranged between the fire cover fire outlet hole lug and the stove core fire outlet hole lug, and a direction of fire outlet of each of the stove core fire outlet holes faces a channel opening of the corresponding fire cover air inlet channel.
Preferably, the amount of the fire cover fire outlet hole lugs is twice that of the stove core fire outlet hole lugs. Both the fire cover fire outlet hole lug and the stove core fire outlet hole lug can be a lug composed of four quadrilateral bevels and one top plane; stove core fire outlet holes are arranged on the outer ring bevel of the stove core fire outlet hole lugs; fire cover outer ring fire outlet holes are arranged on the outer ring bevel of the fire cover fire outlet hole lugs; fire cover inner ring fire outlet holes are arranged on the inner ring bevel of the fire cover fire outlet hole lugs; fire cover side fire outlet holes are arranged on the bevel at one side of the fire cover fire outlet hole lugs; a fire cover air inlet channel is arranged between the bevel (on which fire cover side fire outlet holes are arranged) of a stove core fire outlet hole lug and the bevel (on which no fire cover side fire outlet holes are arranged) of an adjacent stove core fire outlet hole lug.
Preferably, a thirty degree angle is formed between the outer ring bevel of the fire cover fire outlet hole lug and the horizontal plane, a sixty degree angle is formed between the inner ring bevel and the horizontal plane, a forty-five degree angle is formed between the bevel (on which fire cover side fire outlet holes are arranged) and the horizontal plane, and the distance from the bottom of a wok is lowered by adjusting the angle of the fire outlet hole.
Preferably, both the fire cover air inlet channel and the stove core air inlet channel are shaped like a horn, which may have a larger inside portion and a smaller outside portion.
Preferably, the stove plate comprises a stove plate center and a stove plate bottom fixedly connected with each other. On the stove plate are provided with a stove core and a fire cover; on the stove plate center are provided with an air inlet through-hole and a stove plate positioning column match-positioned with the fire cover; the stove plate center is provided with a gas inlet passage B, the gas inlet passage B being communicated with the stove core fire outlet holes and a flame holder slot; a stove core locating block is arranged on the stove core; on the stove plate are provided with a stove plate locating slot matched with the stove core locating block and a stove plate locating lug match-positioned with the stove core.
Preferably, the centre of the stove plate center is connected with the outer ring by a connecting piece whose surface is a bevel structure, which has a higher inside portion and lower outside portion.
Preferably, on the stove plate center are provided with an ignition pin locating slot communicated with an ignition hole and a thermocouple locating slot communicated with a flame-out protection hole.
Preferably, the stove end comprises an ejector pipe, A and another ejector pipe, B. One end of the ejector pipe A is provided with an air inlet A and a gas nozzle hole A, while the other end is communicated with a gas channel A; the gas channel A is communicated with the fire cover fire outlet hole via a gas inlet passage A. One end of the ejector pipe B is provided with an air inlet B and a gas nozzle hole B, while the other end is communicated with a gas channel B; the gas channel B is communicated with the gas inlet passage B; the diameter of the ejector pipe A is larger than that of the ejector pipe B, and the diameter of the air inlet A is larger than that of the air inlet B.
The present invention provides the following benefits: Intersecting arrangement of fire outlet holes allows the flame in the stove core to intersect with the flame in the fire cover inner ring, thus increasing the contact area with air and guaranteeing uniform heating of a wok bottom. The distance from the wok bottom can be lowered by adjusting the angle of the fire outlet holes, overcoming the serious problem of air contact area reduction resulted from shortening of the distance from the wok bottom, thus greatly increasing heat efficiency; according to test results the heat efficiency can be 60% or more.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is an explosive structure diagram of a burner;

FIG. 2 is a three-dimensional structure diagram of a burner;

FIG. 3 is a top view of a burner;

FIG. 4 is a top view of a stove plate of a burner;

FIG. 5 is a section view of a stove plate of a burner;

FIG. 6 is a top view of a fire cover of a burner;

FIG. 7 is a rear view of a stove core part of a burner;

FIG. 8 is a three-dimensional structure diagram of a stove plate bottom of a burner;

FIG. 9 is a three-dimensional structure diagram of a stove plate center of a burner;

FIG. 10 is a view of a stove end of a burner; and

FIG. 11 is a left view of a stove end of a burner.

In the figures:

stove core: 1,
stove core fire outlet hole lug: 1-1,
stove core fire outlet hole: 1-2,
stove core locating block: 1-3,
stove core air inlet channel 2,
fire cover: 3,
fire cover fire outlet hole lug: 3-1,
fire cover outer ring fire outlet hole: 3-2,
fire cover inner ring fire outlet hole: 3-3,
fire cover side fire outlet hole: 3-4,
fire cover air inlet channel: 4,
stove plate center: 5,
stove plate positioning column: 5-1,
stove plate locating slot: 5-2,
ignition pin locating slot: 5-3
thermocouple locating slot: 5-4,
ignition hole: 5-5,
flame-out protection hole: 5-6,
stove plate locating lug: 5-7,
flame holder slot: 5-8,
connecting piece: 5-9,
stove plate bottom: 6,
stove end: 7,
air inlet through-hole: 8,
gas inlet passage: A9,
gas inlet passage: B10,
ejector pipe: A11,
ejector pipe: B12,
gas channel: A13,
gas channel: B14,
air inlet: A15,
air inlet: B16,
gas nozzle hole: A17, and
gas nozzle hole: B18.

DETAILED DESCRIPTION OF THE EMBODIMENTS

Below, further description of the invention is provided in conjunction with the accompanying drawings and the following embodiments:
As shown in the figures, a highly efficient energy-saving environment-friendly burner comprises a stove core 1, a fire cover 3, and a stove plate and stove end 7. Four stove core fire outlet hole lugs 1-1 are arranged on the stove core 1, stove core fire outlet holes 1-2 are arranged on each of the stove core fire outlet hole lugs 1-1, and a stove core air inlet channel 2 is arranged between every two adjacent stove core fire outlet hole lugs 1-1; eight fire cover fire outlet hole lugs 3-1 are arranged on the fire cover 3, fire cover fire outlet holes are arranged on each of the fire cover fire outlet hole lugs 3-1, a fire cover air inlet channel 4 is arranged between the fire cover fire outlet hole lug 3-1 and the stove core fire outlet hole lug 1-1, and the fire outlet position of each of the stove core fire outlet holes 1-2 faces the position of the channel opening of the corresponding fire cover air inlet channel 4 exactly; both the fire cover air inlet channel 4 and the stove core air inlet channel 2 are shaped like a horn, which has a larger inside portion and a smaller outside portion.
Both the fire cover fire outlet hole lug 3-1 and the stove core fire outlet hole lug 1-1 may be a lug composed of four quadrilateral bevels and one top plane (other polygon structures can also be used); stove core fire outlet holes 1-2 may be arranged on the outer ring bevel of the stove core fire outlet hole lugs 1-1; fire cover outer ring fire outlet holes 3-2 may be arranged on the outer ring bevel of the fire cover fire outlet hole lugs 3-1; fire cover inner ring fire outlet holes 3-3 may be arranged on the inner ring bevel of the fire cover fire outlet hole lugs; fire cover side fire outlet holes 3-4 may be arranged on the bevel at one side of the fire cover fire outlet hole lugs; a fire cover air inlet channel 4 may be arranged between the bevel (on which fire cover side fire outlet holes 3-4 are arranged) of a stove core fire outlet hole lug 1-1 and the bevel (on which no fire cover side fire outlet holes 3-4 are arranged) of an adjacent stove core fire outlet hole lug 1-1. A thirty degree angle may be formed between the outer ring bevel of the fire cover fire outlet hole lug 3-1 and the horizontal plane, a sixty degree angle may be formed between the inner ring bevel and the horizontal plane, a forty-five degree angle may be formed between the bevel (on which fire cover side fire outlet holes 3-4 are arranged) and the horizontal plane.
The present invention employs such a principle as below: the distance from the bottom of a wok is lowered by adjusting the angle of the fire outlet hole. Such an angle adjustment, although capable of increasing heat efficiency, undoubtedly leads to insufficient effective contact with air when secondary air flows in. For this reason, the distance from the bottom of a wok is not lowered for a conventional burner. The present invention solves the problem of insufficient effective contact with air by adopting a plurality of improved structures; intersection of flame in the stove core with the flame in the fire cover inner ring is achieved mainly via intersecting arrangement of fire outlet holes, thus increasing air contact area and guaranteeing uniform heating of the bottom of a wok.
The stove plate may comprise a stove plate center 5 and a stove plate bottom 6 fixedly connected with each other, which may be realized by four screws. On the stove plate there may be provided with a stove core 1 and a fire cover 3; on the stove plate center 5 there may be provided with an air inlet through-hole 8 and a stove plate positioning column 5-1 match-positioned with the fire cover 3; the stove plate center may be provided with a gas inlet passage B10, which may be communicated with the stove core fire outlet holes 1-2 and the flame holder slot 5-8; the stove core locating block 1-3 may be arranged on the stove core 1; on the stove plate may be provided with a stove plate locating slot 5-2 matched with the stove core locating block 1-3 and a stove plate locating lug 5-7 match-positioned with the stove core 1. The centre of the stove plate center 5 may be connected with the outer ring by a connecting piece 5-9, the surface of the connecting piece 5-9 may be a bevel structure, which may have a higher inside portion and a lower outside portion, which may increase the distance from the lowest point of the bevel to the fire cover inner ring fire outlet holes 3-3, thus increasing effective contact with air when secondary air flows in. On the stove plate center 5 there may be provided with an ignition pin locating slot 5-3 communicated with the ignition hole 5-5 and a thermocouple locating slot 5-4 communicated with the flame-out protection hole 5-6.
The stove plate may be such a design principle as below: the fire cover 3 may be arranged on the stove plate, the fire cover 3 may be restricted by the stove plate positioning column 5-1 and may not rotate on the stove plate axially; the stove core 1 may be arranged in the stove plate center, axial rotation thereof may being subject to positioning control by the stove core locating block 1-3 and the stove plate locating slot 5-2; the above-mentioned two locating structures may guarantee that a direction of the fire outlet of each of the stove core fire outlet holes 1-2 face the channel opening of the corresponding fire cover air inlet channel 4. In order to guarantee flame-hold combustion, gas is forbidden to leak out through the flame holder slot 5-8 and a gap between the stove core 1 and the stove plate center until the gap between the stove core 1 and the stove plate center may be even-distributed. In the prior art, positioning and even-distributed gap are achieved by three-point positioning. However, a successful three-point positioning installation needs many trials which causes much inconvenience; the present invention adopts a three-point positioning device comprising a stove core locating block 1-3 and two stove plate locating lugs 5-7 (with two points protruded), which is easy for installation; also the two stove plate locating lugs 5-7 can guarantee that the gap between the stove core 1 and the stove plate center be even-distributed.
The stove end 7 may comprise an ejector pipe A11 and an ejector pipe B12; one end of the ejector pipe A11 may be provided with an air inlet A15 and a gas nozzle hole A17, while the other end may be communicated with a gas channel A13; the gas channel A13 may be communicated with the fire cover fire outlet hole via a gas inlet passage A9. One end of the ejector pipe B12 may be provided with an air inlet B16 and a gas nozzle hole B18, while the other end may be communicated with a gas channel B14; the gas channel B14 may be communicated with the gas inlet passage B10; the diameter of the ejector pipe A11 may be larger than that of the ejector pipe B12, and the diameter of the air inlet A15 may be larger than that of the air inlet B16. The invention may be designed with one larger ejector pipe and another smaller ejector pipe as well as one larger air inlet and another smaller air inlet; air requirement of the fire cover may be matched with the air inlet A15, and air requirement of the stove core may be matched with the air inlet B16, thus ensuring effective suction of primary air.
Test Data

1. Test basis: GB 16410-2007 Domestic Gas Cooking Appliances and Q/HLB P1-020-2010 Inspection Specification for Domestic Gas Cooking Appliances.
2. Test purpose: determination of nozzle diameter, thermal load test, heat efficiency test and measurement of CO content.
3. Product type and main technical parameters: gas class (12T natural gas), number of fire hole(s) (1), installation mode (embedded installation), ignition mode (impulse ignition), panel material (glass), rated gas pressure (kPa)-2000 Pa; distance from the wok stand to burner is 30 mm, with a pore size of 1.35, 0.65.
4. Basic test environment and condition: environment temperature: 21.8° C., gas temperature 21.5° C., atmospheric pressure 102.4 kPa, low heating value of gas: 35.9 MJ/m3, and relative humidity: 52.0%.
Test results obtained through cyclic test are as follows:


Ser.			Test
No.	Test Item	Standard Requirement	Result

1	heat	gas condition (“0-2” gas),	60.0%
	efficiency	embedded ≧ 50%
2	thermal load	gas condition (“0-2” gas) (kW)	3.83
	conversion
3	CO content	concentration of CO in “0-2” gas and dry	0.015%
		flue gas (theoretical air coefficient),
		V %<0.045

In addition to the above-mentioned embodiments, the invention can include other embodiments. Those technical schemes formed by adoption of equivalent substitute or equivalent transformation are within the scope of protection of claims of the invention.

Claims

1. A highly efficient energy-saving environment-friendly burner, comprising a stove core, a fire cover, and a stove plate and stove end,

wherein a plurality of stove core fire outlet hole lugs are arranged on the stove core, stove core fire outlet holes are arranged on each of the stove core fire outlet hole lugs, and a stove core air inlet channel is arranged between adjacent stove core fire outlet hole lugs;

wherein a plurality of fire cover fire outlet hole lugs are arranged on the fire cover fire cover fire outlet holes are arranged on each of the fire cover fire outlet hole lugs, a fire cover air inlet channel is arranged between the fire cover fire outlet hole lug and the stove core fire outlet hole lug, and a direction of fire outlet of each of the stove core fire outlet holes faces a channel opening of the corresponding fire cover air inlet channel.

2. The highly efficient energy-saving environment-friendly burner according to claim 1,

wherein the amount of the fire cover fire outlet hole lugs is twice that of the stove core fire outlet hole lugs, both the fire cover fire outlet hole lug and the stove core fire outlet hole lug being composed of four quadrilateral bevels and one top plane;

wherein the stove core fire outlet holes are arranged on an outer ring bevel of the stove core fire outlet hole lugs, fire cover outer ring fire outlet holes are arranged on an outer ring bevel of the fire cover fire outlet hole lugs, fire cover inner ring fire outlet holes are arranged on an inner ring bevel of the fire cover fire outlet hole lugs, fire cover side fire outlet holes are arranged on a bevel at one side of the fire cover fire outlet hole lugs, a fire cover air inlet channel is arranged between a bevel of a stove core fire outlet hole lug on which bevel the fire cover side fire outlet holes are arranged and a bevel of an adjacent stove core fire outlet hole lug on which bevel no fire cover side fire outlet holes are arranged.

3. The highly efficient energy-saving environment-friendly burner according to claim 2,

wherein a thirty degree angle is formed between the outer ring bevel of the fire cover fire outlet hole lug and a horizontal plane, a sixty degree angle is formed between the inner ring bevel and a horizontal plane, a forty-five degree angle is formed between the bevel on which the fire cover side fire outlet holes are arranged and the horizontal plane.

4. The highly efficient energy-saving environment-friendly burner according to claim 1,

wherein both the fire cover air inlet channel and the stove core air inlet channel are horn-shaped with a larger inside portion and a smaller outside portion.

5. The highly efficient energy-saving environment-friendly burner according to claim 1,

wherein the stove plate comprises a stove plate center and a stove plate bottom fixedly connected with each other, a stove core and a fire cover are provided on the stove plate, and an air inlet through-hole and a stove plate positioning column match-positioned with the fire cover are positioned on the stove plate center;

wherein the stove plate center is provided with a gas inlet passage communicated with the stove core fire outlet holes and the flame holder slot;

wherein the stove core locating block is arranged on the stove core;

wherein on the stove plate are provided with a stove plate locating slot match-positioned with the stove core locating block and a stove plate locating lug match-positioned with the stove core.

6. The highly efficient energy-saving environment-friendly burner according to claim 5,

wherein the centre of the stove plate center is connected with the outer ring by a connecting piece, and the surface of the connecting piece is a bevel structure having a higher inside portion and a lower outside portion.

7. The highly efficient energy-saving environment-friendly burner according to claim 5,

wherein on the stove plate center is are provided with an ignition pin locating slot communicated with the ignition hole and a thermocouple locating slot communicated with the flame-out protection hole.

8. The highly efficient energy-saving environment-friendly burner according to claim 1,

wherein the stove end comprises a first ejector pipe and a second ejector pipe, one end of the first ejector pipe provided with a first air inlet and a first gas nozzle hole, while the other end communicated with a first gas channel, the first gas channel communicated with the fire cover fire outlet hole via a first gas inlet passage;

wherein one end of the second ejector pipe is provided with a second air inlet and a second gas nozzle hole, while the other end is communicated with a second gas channel, the second gas channel communicated with a second gas inlet passage;

wherein the diameter of the first ejector pipe is larger than that of the second ejector pipe, and the diameter of the first air inlet is larger than that of the second air inlet.

9. The highly efficient energy-saving environment-friendly burner according to claim 2, wherein both the fire cover air inlet channel and the stove core air inlet channel are horn-shaped with a larger inside portion and a smaller outside portion.