BURNER

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.

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 core1, a fire cover3, and a stove plate and stove end7. Four stove core fire outlet hole lugs1-1are arranged on the stove core1, stove core fire outlet holes1-2are arranged on each of the stove core fire outlet hole lugs1-1, and a stove core air inlet channel2is arranged between every two adjacent stove core fire outlet hole lugs1-1; eight fire cover fire outlet hole lugs3-1are arranged on the fire cover3, fire cover fire outlet holes are arranged on each of the fire cover fire outlet hole lugs3-1, a fire cover air inlet channel4is arranged between the fire cover fire outlet hole lug3-1and the stove core fire outlet hole lug1-1, and the fire outlet position of each of the stove core fire outlet holes1-2faces the position of the channel opening of the corresponding fire cover air inlet channel4exactly; both the fire cover air inlet channel4and the stove core air inlet channel2are shaped like a horn, which has a larger inside portion and a smaller outside portion.

Both the fire cover fire outlet hole lug3-1and the stove core fire outlet hole lug1-1may be a lug composed of four quadrilateral bevels and one top plane (other polygon structures can also be used); stove core fire outlet holes1-2may be arranged on the outer ring bevel of the stove core fire outlet hole lugs1-1; fire cover outer ring fire outlet holes3-2may be arranged on the outer ring bevel of the fire cover fire outlet hole lugs3-1; fire cover inner ring fire outlet holes3-3may be arranged on the inner ring bevel of the fire cover fire outlet hole lugs; fire cover side fire outlet holes3-4may be arranged on the bevel at one side of the fire cover fire outlet hole lugs; a fire cover air inlet channel4may be arranged between the bevel (on which fire cover side fire outlet holes3-4are arranged) of a stove core fire outlet hole lug1-1and the bevel (on which no fire cover side fire outlet holes3-4are arranged) of an adjacent stove core fire outlet hole lug1-1. A thirty degree angle may be formed between the outer ring bevel of the fire cover fire outlet hole lug3-1and 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 holes3-4are 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 center5and a stove plate bottom6fixedly connected with each other, which may be realized by four screws. On the stove plate there may be provided with a stove core1and a fire cover3; on the stove plate center5there may be provided with an air inlet through-hole8and a stove plate positioning column5-1match-positioned with the fire cover3; the stove plate center may be provided with a gas inlet passage B10, which may be communicated with the stove core fire outlet holes1-2and the flame holder slot5-8; the stove core locating block1-3may be arranged on the stove core1; on the stove plate may be provided with a stove plate locating slot5-2matched with the stove core locating block1-3and a stove plate locating lug5-7match-positioned with the stove core1. The centre of the stove plate center5may be connected with the outer ring by a connecting piece5-9, the surface of the connecting piece5-9may 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 holes3-3, thus increasing effective contact with air when secondary air flows in. On the stove plate center5there may be provided with an ignition pin locating slot5-3communicated with the ignition hole5-5and a thermocouple locating slot5-4communicated with the flame-out protection hole5-6.

The stove plate may be such a design principle as below: the fire cover3may be arranged on the stove plate, the fire cover3may be restricted by the stove plate positioning column5-1and may not rotate on the stove plate axially; the stove core1may be arranged in the stove plate center, axial rotation thereof may being subject to positioning control by the stove core locating block1-3and the stove plate locating slot5-2; the above-mentioned two locating structures may guarantee that a direction of the fire outlet of each of the stove core fire outlet holes1-2face the channel opening of the corresponding fire cover air inlet channel4. In order to guarantee flame-hold combustion, gas is forbidden to leak out through the flame holder slot5-8and a gap between the stove core1and the stove plate center until the gap between the stove core1and 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 block1-3and two stove plate locating lugs5-7(with two points protruded), which is easy for installation; also the two stove plate locating lugs5-7can guarantee that the gap between the stove core1and the stove plate center be even-distributed.

The stove end7may comprise an ejector pipe A11and an ejector pipe B12; one end of the ejector pipe A11may be provided with an air inlet A15and a gas nozzle hole A17, while the other end may be communicated with a gas channel A13; the gas channel A13may be communicated with the fire cover fire outlet hole via a gas inlet passage A9. One end of the ejector pipe B12may be provided with an air inlet B16and a gas nozzle hole B18, while the other end may be communicated with a gas channel B14; the gas channel B14may be communicated with the gas inlet passage B10; the diameter of the ejector pipe A11may be larger than that of the ejector pipe B12, and the diameter of the air inlet A15may 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 Data1. Test basis: GB 16410-2007Domestic Gas Cooking Appliances and Q/HLB P1-020-2010Inspection 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.TestNo.Test ItemStandard RequirementResult1heatgas condition (“0-2” gas),60.0%efficiencyembedded ≧ 50%2thermal loadgas condition (“0-2” gas) (kW)3.83conversion3CO contentconcentration of CO in “0-2” gas and dry0.015%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.