CN213777859U

CN213777859U - Heat shield for stove and gas stove with heat shield

Info

Publication number: CN213777859U
Application number: CN202021775227.0U
Authority: CN
Inventors: 龙艳; 程永超; 徐强
Original assignee: Ningbo Fotile Kitchen Ware Co Ltd
Current assignee: Ningbo Fotile Kitchen Ware Co Ltd
Priority date: 2020-08-21
Filing date: 2020-08-21
Publication date: 2021-07-23
Anticipated expiration: 2030-08-21

Abstract

The utility model relates to a kitchen is with separating heat exchanger and using gas-cooker that has this heat exchanger, including the annular cover body, the central authorities of the cover body are formed with the annular chamber, the cover body is for the bilayer and have cavity, its characterized in that: the cover body has then seted up on lateral wall or diapire and has supplied the external air to flow in the inlet port of cavity, cover body top upper surface has annular inner step, the intercommunication has been seted up along circumference interval to the first wall on the annular inner step annular chamber with the venthole of cavity compares with prior art, the utility model has the advantages of supply the inlet port that external air flows in the heat exchanger cavity to the heat exchanger that separates is seted up to the heat exchanger for external air gets into to separate the heat exchanger and can be effectively preheated, and the secondary air after preheating can be divided by the venthole and flow out and provide the secondary air after preheating for the combustor, can avoid the secondary air between inner ring and the outer loop to effectively improve gas utilization ratio.

Description

Heat shield for stove and gas stove with heat shield

Technical Field

The utility model relates to a gas-cooker field, concretely relates to kitchen is with separating heat exchanger and using the gas-cooker that has this kitchen with separating heat exchanger.

Background

At present, the gas stove burner replenishes air in various modes, generally has the mode of side air intake and lower air intake, and the mode of side air intake is opened the side air intake at the lateral part of air mixing chamber promptly, and the outside air carries out the secondary air through this side air intake and supplements, and the mode of lower air intake is opened the air intake down at the base seat promptly, and the air of gas-cooker below carries out the secondary air through this air intake down and supplements. Although the side air intake mode has the advantages of small intake resistance and large intake air amount, the existing side air intake combustor still has the problems as follows: due to the injection effect of combustion hot air flow, secondary air is sucked by the inner fire cover and the outer fire cover through the air mixing chamber side air inlet, the heat load of the inner ring is small, the coefficient of primary air is higher than that of the outer ring, the sucked secondary air is often excessive, the secondary air sucked by the middle ring fire hole of the outer fire cover is insufficient, and further improvement is needed for reasonably distributing the secondary air and simultaneously realizing the sufficient combustion of the inner ring and the outer ring.

On the other hand, in the actual use process of the existing gas stove, because the cooker is placed on the cooker bracket for heating, and a certain space interval is formed between the cooker and the burner, the heat energy generated by the combustion of the gas is used for heating the cooker, and a considerable part of the heat energy is dissipated to the surrounding environment, so that the energy is wasted; in order to solve the above problems, in recent years, there are some heat collecting and energy concentrating devices in China, for example, as disclosed in chinese patent CN203404823U, "energy concentrating ring for gas stove and gas stove with the same", the energy concentrating ring is an energy saving component surrounding the periphery of the burner, and for the gas stove to which the energy concentrating ring is applied, the lateral secondary air supplied to the burner is further affected due to the blocking of the energy concentrating ring.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that a thermal shroud for kitchen range that can provide the side direction secondary air through preheating to the combustor is provided to above-mentioned prior art current situation.

The utility model aims to solve the second technical problem that to above-mentioned prior art current situation and provide a secondary air rational distribution's gas-cooker of heat exchanger side air inlet for the messenger through the kitchen.

The utility model provides a technical scheme that above-mentioned first technical problem adopted does: this kitchen is with heat exchanger that separates, including the annular cover body, the central authorities of the cover body are formed with annular chamber, the cover body is double-deck and has cavity, its characterized in that: the cover body is provided with an air inlet hole on the outer side wall or the bottom wall for external air to flow into the cavity, the upper surface of the top of the cover body is provided with an annular inner step, and the first wall surface above the annular inner step is provided with air outlet holes at intervals along the circumferential direction for communicating the annular cavity and the cavity.

In order to enable the external air to flow into the cavity of the cover body and be preheated, and then can be quickly supplemented to the fire outlet area of the burner, the second wall surface below the annular inner step is preferably inclined downwards gradually from outside to inside along the radial direction, and forms an air guide area together with the first wall surface above the annular inner step.

In order to make the cover body have a liquid storage function, the inner end of the second wall surface below the annular inner step is preferably inclined upwards gradually from outside to inside in the radial direction. The inner side end of the second wall surface below the annular inner step is gradually inclined upwards from outside to inside along the radial direction, so that preheated secondary air flowing out of the air outlet hole can be guided to the root of a fire outlet area of the corresponding combustor; on the other hand, the top of the cover body has the function of storing the overflowing liquid, and the preheated secondary air flowing out of the air outlet hole can also assist in drying the overflowing liquid in time, so that the phenomenon that the fire outlet area of the burner is blocked reversely due to excessive overflowing liquid storage is avoided.

In order to better support the pot, preferably, the top of the cover body is more convex than the first wall surface above the annular inner step, and at least two pot supporting legs are fixed on the top of the cover body at intervals along the circumferential direction.

In order to solve the second technical problem, it is preferable to provide a gas cooker to which the heat shield for cookers is applied, including a gas cooker panel and a burner, where the burner includes:

a base;

the inner ring fire cover is arranged on the base, and a central air mixing chamber is formed between the inner ring fire cover and the base;

the outer ring fire cover is also arranged on the base, is positioned at the periphery of the inner ring fire cover, and forms an outer ring gas mixing chamber with the base; an air supplement cavity is formed between the central air mixing chamber and the outer ring air mixing chamber; a plurality of radial secondary air supply channels for communicating the air supply cavity with the outside are arranged on the base at intervals along the circumferential direction;

the method is characterized in that: the annular cavity of the heat shield surrounds the combustor and is placed on a gas stove panel, the air outlet of the shield body is communicated with the outer wall area of the outer ring fire cover, and the air inlet is communicated with the fire outlet area of the inner ring fire cover through the secondary air supply channel. The top of the heat shield is used as a 'separating part' of the outer wall area of the outer ring fire cover and the fire outlet area of the inner ring fire cover, the space formed by the top of the heat shield can be used for specifically supplying air to the lateral secondary air supply channel of the burner, and the air outlet holes separated by the separating part can be used for better supplying secondary air to the outer wall area of the outer ring fire cover.

In order to better supplement the preheated secondary air to the root of the fire outlet of the outer ring fire cover, preferably, the outer wall area of the outer ring fire cover is circumferentially provided with the fire outlet communicated with the outer ring gas mixing chamber, the outer wall of the outer ring fire cover is directly used as the inner side wall of the cover body, and the inner side end of the second wall surface below the annular inner step is located below the fire outlet.

In order to better guide the overflowing liquid to the gas stove panel, preferably, the gas stove panel further includes a flow guide seat protruding from the surface of the panel, the flow guide seat includes a seat body and a central hole disposed at the central position of the seat body, the burner is installed in the central hole, and the cover body directly uses the flow guide seat as the bottom wall. The flow guide seat protrudes out of the surface of the panel, liquid such as overflowing liquid generated in the cooking process is directly guided to the panel, and only the gas stove panel needs to be cleaned when the gas stove panel is cleaned.

In order to facilitate the placement of the cover, preferably, the outer periphery of the seat body of the flow guide seat has a rim portion for the outer sidewall of the cover to rest on.

Compared with the prior art, the utility model has the advantages of it offers the inlet port that supplies the outside air to flow in the heat exchanger cavity to separate the heat exchanger for the outside air gets into to separate the heat exchanger and can be effectively preheated, and the secondary air after preheating can be shunted by the venthole and provide the after-preheating secondary air for the combustor, in order to imitate improvement gas utilization ratio, and the utility model also provides an utilize the gas-cooker of above-mentioned heat exchanger to separate the heat exchanger, the top of separating the heat exchanger gets into the inlet port of the cavity of heat exchanger and the "partition portion" of the venthole of outflow cavity as the outside air, and the space that this separates the top of separating the heat exchanger can be pertinence ground for the side direction secondary tonifying qi passageway tonifying qi of combustor, and the venthole can carry out the replenishment of secondary air for the outer loop fire lid regional better, thereby improves gas utilization ratio effectively.

Drawings

FIG. 1 is a schematic structural view of a heat shield for a range according to an embodiment of the present invention;

FIG. 2 is a cross-sectional view of FIG. 1;

FIG. 3 is a schematic view of the heat shield of the embodiment of the present invention placed on the gas range;

fig. 4 is a partial cross-sectional view of fig. 3.

Detailed Description

The present invention will be described in further detail with reference to the following embodiments.

As shown in fig. 1 to 4, for the best embodiment of the present invention, the heat shield for kitchen range in this embodiment includes an annular cover body 1, the central part of the cover body 1 is formed with an annular cavity 11, the cover body 1 is double-layered and has a cavity 12, the cover body 1 has an air inlet 131 for the inflow of the external air on the outer side wall 13 or the bottom wall of the cavity 12, the upper surface of the top of the cover body 1 has an annular inner step 14, the first wall 141 above the annular inner step 14 has an air outlet 1411 for communicating the annular cavity 11 with the cavity 12 along the circumferential direction at intervals, the heat shield has an air inlet 131 for the inflow of the external air into the heat shield cavity 12, so that the external air enters the heat shield and can be effectively preheated, the preheated secondary air can be divided by the air outlet 1411 to provide the preheated secondary air for the burner 3, and the gas utilization rate is effectively improved.

Specifically, in order to allow the external air to flow into the cavity 12 of the cap body 1 and be preheated, and then to be supplied to the flame-out region of the burner 3 more quickly, the second wall surface 142 below the annular inner step 14 is inclined gradually downward from the outside to the inside in the radial direction, and forms the air guide region 15 together with the first wall surface 141 above the annular inner step 14. In order to make the cover 1 capable of storing liquid, the inner end 1421 of the second wall 142 under the annular inner step 14 is inclined upward from outside to inside in the radial direction. Wherein, the inner side end 1421 of the second wall 142 under the annular inner step 14 is inclined upward gradually from outside to inside in the radial direction, so as to guide the preheated secondary air flowing out from the outlet port 1411 to the root of the fire zone of the corresponding burner 3; on the other hand, the top of the cover body 1 has the function of storing the overflowed liquid, and the preheated secondary air flowing out of the air outlet 1411 can also assist in drying the overflowed liquid in time, so that the phenomenon that the overflowed liquid is stored too much to block the fire outlet area of the burner 3 in a reverse direction is avoided. In order to better support the pot, the top of the cover 1 is protruded more than the first wall 141 above the annular inner step 14, and at least two pot legs 16 are fixed on the top of the cover 1 along the circumferential direction at intervals.

As shown in fig. 3, the schematic view of the heat shield being placed on a gas stove is shown, the gas stove includes a gas stove panel 2 and a burner 3, the burner 3 includes a base 31, an inner ring fire cover 32 disposed on the base 31, a central air mixing chamber 33 is formed between the inner ring fire cover 32 and the base 31, and an outer ring fire cover 34 also disposed on the base 31, wherein the outer ring fire cover 34 is located at the periphery of the inner ring fire cover 32, and an outer ring air mixing chamber 35 is formed between the outer ring fire cover 34 and the base 31; an air supplement cavity 36 is formed between the central air mixing chamber 33 and the outer ring air mixing chamber 35; a plurality of radial secondary air supply channels 37 for communicating the air supply cavity 36 with the outside are arranged on the base 31 at intervals along the circumferential direction; the annular cavity 11 of the heat shield surrounds the burner 3 and is placed on the gas stove panel 2, the air outlet 1411 of the cover body 1 is communicated with the outer wall area of the outer ring fire cover 34, the air inlet 131 is communicated with the fire outlet area of the inner ring fire cover 32 through the secondary air supply channel 37, the top of the heat shield is used as a separating part of the outer wall area of the outer ring fire cover 34 and the fire outlet area of the inner ring fire cover 32, the space formed by the top of the heat shield can be used for supplying air for the lateral secondary air supply channel 37 of the burner 3 in a targeted mode, and the air outlet 1411 separated by the separating part can better supplement secondary air for the outer wall area of the outer ring fire cover 34. In order to better supplement the preheated secondary air to the root of the fire outlet 341 of the outer ring fire cover 34, the outer wall area of the outer ring fire cover 34 is circumferentially provided with the fire outlet 341 communicated with the outer ring air mixing chamber 35, the outer wall of the outer ring fire cover 34 is directly used as the inner side wall of the cover body 1, and the inner side end 1421 of the second wall surface 142 below the annular inner step 14 is located below the fire outlet 341.

In addition, in order to better guide the overflowing liquid to the gas stove panel 2, the gas stove panel 2 further includes a flow guide seat 4 protruding out of the panel surface, the flow guide seat includes a seat body 41 and a central hole 42 disposed at the central position of the seat body 41, the burner 3 is installed in the central hole 42, and the cover body 1 directly uses the flow guide seat 4 as the bottom wall. The flow guide seat 4 protrudes out of the surface of the panel, liquid such as overflowing liquid generated in the cooking process is directly guided to the panel, and only the gas stove panel 2 needs to be cleaned when the gas stove is cleaned. For the convenience of placing the cover 1, the outer periphery of the seat 41 of the diversion seat 4 has a rim 43 for placing the outer sidewall 13 of the cover 1.

The specific process is as follows, the outside air on the gas stove panel 2 flows into the heat shield cavity 12 through the air inlet 131, so that the outside air can enter the heat shield and can be effectively preheated, the preheated secondary air can be divided by the air outlet 1411 to provide the preheated secondary air for the fire outlet 341 of the outer ring fire cover 34 of the burner 3, so as to effectively improve the gas utilization rate, the preheated secondary air can be communicated with the fire outlet area of the inner ring fire cover 32 through the secondary air supply channel 37, the top of the heat shield is used as a separating part of the outer wall area of the outer ring fire cover 34 and the fire outlet area of the inner ring fire cover 32, the independent air supply channel can effectively avoid the entrainment effect of the hot air flow after combustion and the high temperature supply of the burner 3 on the secondary air supplied to the inner ring, and avoid the mutual influence of the secondary air between the inner ring and the outer ring.

Claims

1. The utility model provides a kitchen is with heat exchanger that separates, including annular cover body (1), the central authorities of cover body (1) are formed with annular chamber (11), cover body (1) is double-deck and have cavity (12), its characterized in that: the cover body (1) is provided with an air inlet hole (131) for allowing outside air to flow into the cavity (12) on the outer side wall (13) or the bottom wall, the upper surface of the top of the cover body (1) is provided with an annular inner step (14), and a first wall surface (141) above the annular inner step (14) is provided with air outlet holes (1411) at intervals along the circumferential direction for communicating the annular cavity (11) and the cavity (12).

2. The cooktop heat shield of claim 1, wherein: the second wall surface (142) below the annular inner step (14) is gradually inclined downwards from outside to inside in the radial direction, and forms an air guide area (15) together with the first wall surface (141) above the annular inner step (14).

3. The cooktop heat shield of claim 2, wherein: the inner side end (1421) of the second wall surface (142) below the annular inner step (14) is gradually inclined upwards from outside to inside in the radial direction.

4. The cooktop heat shield of claim 3, wherein: the top of the cover body (1) is more convex than a first wall surface (141) above the annular inner step (14), and at least two pot support legs (16) are fixed on the top of the cover body (1) at intervals along the circumferential direction.

5. A gas cooker using the heat shield for cookers according to any one of claims 1 to 4, comprising a gas cooker panel (2) and a burner (3), wherein the burner (3) comprises:

a base (31);

an inner ring fire cover (32) arranged on the base (31) and forming a central air mixing chamber (33) with the base (31);

the outer ring fire cover (34) is also arranged on the base (31), is positioned at the periphery of the inner ring fire cover (32), and forms an outer ring air mixing chamber (35) with the base (31); an air supplement cavity (36) is formed between the central air mixing chamber (33) and the outer ring air mixing chamber (35); a plurality of radial secondary air supplementing channels (37) for communicating the air supplementing cavity (36) with the outside are arranged on the base (31) at intervals along the circumferential direction;

the method is characterized in that: the annular cavity (11) of the heat shield surrounds the combustor (3) and is placed on a gas stove panel (2), the air outlet hole (1411) of the shield body (1) is communicated with the outer wall area of the outer ring fire cover (34), and the air inlet hole (131) is communicated with the fire outlet area of the inner ring fire cover (32) through the secondary air supply channel (37).

6. The gas range of claim 5, wherein: the outer wall area of the outer ring fire cover (34) is circumferentially provided with fire outlet holes (341) communicated with the outer ring gas mixing chamber (35), the outer wall of the outer ring fire cover (34) is directly used as the inner side wall of the cover body (1), and the inner side end (1421) of the second wall surface (142) below the annular inner step (14) is located below the fire outlet holes (341).

7. The gas range of claim 6, wherein: gas range panel (2) still including protrusion in water conservancy diversion seat (4) on gas range panel (2) surface, water conservancy diversion seat (4) are including pedestal (41) and set up central hole (42) at this pedestal (41) central point, combustor (3) install in this central hole (42), cover body (1) directly with water conservancy diversion seat (4) are as the diapire.

8. The gas range of claim 7, wherein: the periphery of the base body (41) of the flow guide base (4) is provided with a rim part (43) for placing the outer side wall (13) of the cover body (1).