A regenerative hearth and stove

Abstract

The utility model belongs to the technical field of stove, concretely relates to a heat accumulating type hearth and stove, it includes hearth body, is set up in hearth body and has the chamber, the upper part of chamber is the muzzle, the lower part is the burner installation mouth, characterized by: the chamber is equipped with the baffle ring, the baffle ring is located in the upper middle part of chamber, the outer end of baffle ring is fixed on hearth body, the inner end extends to the inboard. The hearth because the upper middle part of chamber is equipped with the baffle ring, can hinder the emission of combustion flue gas, namely increases the emission resistance of flue gas, slows down its emission speed, makes the high-temperature flue gas to have some accumulation in the lower middle part of chamber, increases the thermal density of this part, to improve the combustion temperature, on the one hand, increases the heating temperature of the lower part of the pot, and the firepower is more sufficient, on the other hand, can catalyze the full combustion of the difficult flammable gas, and better energy saving and emission reduction.

Description

Technical Field

[0001] This utility model belongs to the field of stove technology, specifically relating to a heat storage furnace and stove. Background Technology

[0002] In my country, where Chinese cuisine is the mainstay, hotels, canteens, and central kitchens are all equipped with commercial gas stoves for cooking Chinese food. To improve heat energy utilization, the burners of existing commercial gas stoves mainly consist of a combustion chamber that surrounds the bottom of the cookware and a burner installed in the combustion chamber. Most current combustion chambers adopt a top-exhaust structure, meaning that the flue gas produced by the combustion of the air-gas mixture in the combustion chamber is discharged from the top of the combustion chamber. This method increases heat loss and reduces the combustion temperature in the combustion chamber to some extent, resulting in incomplete combustion of the gas. This not only wastes fuel energy and increases the user's fuel consumption costs, but also produces a large amount of flue gas with high carbon content, which fails to respond to the current call for energy conservation and emission reduction, and cannot meet increasingly stringent environmental protection requirements.

[0003] To address the aforementioned problems, the inventors have developed an energy-saving and environmentally friendly furnace and burner head, published under the number CN209801479U. The furnace body is divided into an inner furnace body and an outer furnace body located outside the inner furnace body. A reflector is installed within the inner furnace body, and the inner wall of the reflector forms a combustion chamber. The reflector and the inner furnace body form a first flue gas chamber, and the inner and outer furnace bodies form a second flue gas chamber. A first exhaust port connecting the combustion chamber and the first flue gas chamber is provided on the reflector, and a second exhaust port connecting the first and second flue gas chambers is provided on the inner furnace body. An external exhaust port connecting the second flue gas chamber is provided on the furnace body. This design, on the one hand, increases the exhaust path by configuring the various flue gas chambers and exhaust ports, thereby extending the exhaust time of high-temperature flue gas; on the other hand, it allows the exhaust channel to function as an insulation layer.

[0004] The inventors also designed a cyclone-type energy-saving and environmentally friendly furnace, burner, and gas stove, with publication number CN210128343U, which also extends the exhaust path. Although the above two types of furnaces increase the temperature inside the furnace to some extent, the heat density inside the furnace is still relatively low, and there is still considerable room for improvement. Summary of the Invention

[0005] The purpose of this invention is to overcome the shortcomings of the existing technology and provide a regenerative furnace and stove that can improve the heat density in the lower part of the furnace cavity.

[0006] The technical solution adopted by this utility model to solve its technical problem is as follows: Design a heat storage furnace, including a furnace body, a cavity is opened in the furnace body, the upper part of the cavity is the inlet and the lower part is the burner installation port, characterized in that: a retaining ring is provided in the cavity, the retaining ring is located in the middle and upper part of the cavity, the outer end of the retaining ring is fixed on the furnace body and the inner end extends inward.

[0007] Preferably, the retaining ring is conical, with its lower end connected to the furnace body and its upper end positioned near the furnace opening.

[0008] Preferably, the upper end of the furnace body is flush with the furnace body, and a flue is provided on the furnace body. The inner end of the flue is connected to the furnace cavity, and the connection between the flue and the furnace body is located above the lower end of the baffle ring.

[0009] Preferably, the flue is located at the rear end of the furnace body.

[0010] Preferably, the bore is flared outwards from bottom to top.

[0011] Preferably, the front end of the furnace body is provided with a fire observation tube, which is connected to the furnace cavity.

[0012] Preferably, the connection between the observation tube and the furnace body is located below the lower end of the retaining ring.

[0013] Preferably, the furnace body includes an outer cylinder and an inner cylinder located inside the outer cylinder, with a heat insulation layer filling the space between the outer cylinder and the inner cylinder.

[0014] Preferably, the flue includes a first tube and a second tube fitted onto the first tube, the first tube being connected to the inner cylinder and the second tube being connected to the outer cylinder.

[0015] This utility model also provides a stove, including a furnace chamber, characterized in that: the furnace chamber is the above-mentioned heat storage furnace chamber.

[0016] Compared with the prior art, the beneficial effects of this utility model are:

[0017] 1. Because the upper and middle parts of the combustion chamber are equipped with baffles, the emission of combustion flue gas is hindered, which increases the emission resistance of the flue gas and slows down its emission speed. This causes the high-temperature flue gas to accumulate in the lower and middle parts of the combustion chamber, increasing the heat density in this part and thus increasing the combustion temperature. On the one hand, it increases the heating temperature of the lower part of the pot, making the firepower stronger; on the other hand, it can catalyze the complete combustion of difficult-to-burn gases, thus better saving energy and reducing emissions.

[0018] 2. Because the baffle ring is conical, with its lower end connected to the furnace body and its upper end positioned near the furnace opening, it can reduce the emission velocity of flue gas while increasing the contact area between the high-thermal-density flue gas and the bottom of the cookware, thereby increasing the cooking temperature.

[0019] 3. Since the upper end of the furnace body is flush, a flue is provided on the furnace body. The inner end of the flue is connected to the furnace cavity. The connection between the flue and the furnace body is located above the lower end of the baffle ring, so that the pot can fit in close contact with the upper part of the furnace body, reducing the amount of flue gas overflowing from the furnace cavity, forcing the flue gas to be discharged through the flue, and not affecting the thermal density of the flue gas in the lower part of the furnace cavity.

[0020] 4. Because the flue is located at the rear end of the furnace body, it is far away from the chef, reducing the impact of smoke on the chef and benefiting the chef's health.

[0021] 5. Because the opening of the furnace is flared outward from bottom to top, it can increase the contact area between the cookware and the furnace body, further reducing the amount of smoke overflow; on the other hand, it keeps the upper part of the cookware away from the furnace body, reducing the temperature of the upper part of the cookware and reducing the risk of burns.

[0022] 6. Because the front end of the furnace body is equipped with a viewing tube that connects to the furnace cavity, it is convenient for the chef to observe the combustion situation inside the furnace cavity through the viewing tube; the connection between the viewing tube and the furnace body is located below the lower end of the baffle ring, which allows for a more direct observation of the combustion situation in the high heat density zone.

[0023] 7. Since the furnace body includes an outer cylinder and an inner cylinder located inside the outer cylinder, and the space between the outer cylinder and the inner cylinder is filled with a heat insulation layer, it can not only play the role of heat insulation and heat preservation, reducing heat loss in the furnace cavity; it can also play a good protective role for the heat insulation layer and extend its service life.

[0024] 8. Because the flue uses a structure in which the first tube and the second tube are fitted together, a heat insulation cavity is formed between the two tubes, which reduces the temperature of the second tube and avoids burns.

[0025] 9. This utility model has an ingenious design. By using a baffle ring, it reduces the emission velocity of flue gas, causing it to accumulate to a certain extent and increasing the heat density, thereby saving energy and reducing emissions. It is worth promoting and using in the industry. Attached Figure Description

[0026] Figure 1 This is a perspective view of the present invention;

[0027] Figure 2 yes Figure 1 View from direction A;

[0028] Figure 3 yes Figure 2 Enlarged cross-sectional view of the middle section of the BB;

[0029] Figure 4 yes Figure 3 CC section view;

[0030] Figure 5 yes Figure 3 A diagram illustrating the usage status.

[0031] The following are marked in the diagram: 1. Furnace body; 11. Inner cylinder; 12. Outer cylinder; 13. Thermal insulation layer; 2. Baffle ring; 3. Smoke pipe; 31. Second pipe body; 32. First pipe body; 4. Observation tube; 5. Furnace cavity; 51. Flame opening; 52. Burner mounting port; 6. Cookware. Detailed Implementation

[0032] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0033] When this utility model is in working condition, the end away from the ground is defined as the top or upper end, and the other end closer to the ground is defined as the lower end or bottom end; the side closer to the center of the cavity 5 is defined as the inner side, and the other side away from the center of the cavity 5 is defined as the outer side; the side closer to the chef is defined as the front, and the other side away from the chef is defined as the rear.

[0034] like Figure 1 and Figure 2 As shown, this utility model has a cavity 5 in the furnace body 1. The upper part of the cavity 5 is the nozzle 51, and the lower part is the burner mounting port 52. A conical retaining ring 2 is provided inside the cavity 5. The retaining ring 2 is located in the upper middle part of the cavity 5, that is, the retaining ring 2 is larger at the bottom and smaller at the top, with the lower end on the outer side and the upper end on the inner side, so that the inner end of the retaining ring 2 extends inward. The lower end of the retaining ring 2 is connected to the furnace body 1, and the upper end is positioned close to the nozzle 51. Figure 5 As shown, after the cookware 6 is placed on the furnace body 1, the high-temperature flue gas generated by the burner can only be discharged through the gap between the cookware 6 and the baffle ring 2, which greatly reduces the flow area of ​​the flue gas, increases the emission resistance of the flue gas, and slows down its emission speed. This causes the high-temperature flue gas to accumulate in the middle and lower part of the furnace cavity 5, increasing the heat density of this part and thus increasing the combustion temperature. On the one hand, it increases the heating temperature of the lower part of the cookware 6, making the firepower stronger; on the other hand, it can catalyze the complete combustion of difficult-to-burn gases, better saving energy and reducing emissions; it can also increase the contact area between the high-heat-density flue gas and the bottom of the cookware 6, increasing the cooking temperature.

[0035] To reduce the amount of smoke escaping from the muzzle 51, such as Figure 4 As shown, the upper end of the furnace body 1 adopts a flush structure, meaning the upper end of the furnace body 1 is on the same plane without any gaps or protrusions, allowing the placed pot 6 to contact the furnace body 1 more closely, avoiding the large gaps found in existing technologies. To increase the contact area between the furnace body 1 and the pot 6 and further reduce the amount of flue gas overflow, the opening 51 is designed to flare outwards from bottom to top. A flue pipe 3 is provided at the rear end of the furnace body 1, with its inner end connected to the furnace cavity 5. The connection between the flue pipe 3 and the furnace body 1 is located above the lower end of the baffle ring 2, which neither disrupts the high-density heat state nor fails to form a flue gas exhaust channel, ensuring that the flue gas in the furnace cavity 5 is in a fluid state and guaranteeing stable combustion within the furnace cavity 5.

[0036] To facilitate observation of the combustion within the oven during cooking, such as Figure 3 As shown, the present invention also provides a fire observation tube 4 at the front end of the furnace body 1. The fire observation tube 4 is connected to the furnace cavity 5. The connection between the fire observation tube 4 and the furnace body 1 is located below the lower end of the baffle ring 2, so that the chef can directly observe the combustion of the high-density heat distribution area in the furnace cavity 5 through the opening of the fire observation tube 4.

[0037] To enhance the thermal insulation performance of the furnace body 1, this invention designs the furnace body 1 as a fitted structure consisting of an outer cylinder 12 and an inner cylinder 11 located within the outer cylinder 12. A thermal insulation layer 13 is filled between the outer cylinder 12 and the inner cylinder 11. The thermal insulation layer 13 can be made of ceramic fiber cotton or ceramic insulation blocks. Correspondingly, the flue pipe 3 is also designed as a sleeve structure, i.e., the flue pipe 3 contains a first pipe body 32 and a second pipe body 31 fitted onto the first pipe body 32. The first pipe body 32 is connected to the inner cylinder 11, and the second pipe body 31 is connected to the outer cylinder 12. This creates a thermal insulation cavity between the two pipes, reducing the temperature of the second pipe body 31 and preventing burns.

[0038] This invention also applies the aforementioned furnace chamber to a gas stove to form a high-heat gas stove.

[0039] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of this utility model without departing from the scope of the technical solution of this utility model are not permitted.

Claims

1. A regenerative furnace, comprising a furnace body, wherein a cavity is formed in the furnace body, the upper part of the cavity is an inlet and the lower part is a burner mounting port, characterized in that: A retaining ring is provided inside the furnace cavity. The retaining ring is located in the upper middle part of the furnace cavity. The outer end of the retaining ring is fixed to the furnace body, and the inner end extends inward.

2. The regenerative hearth furnace according to claim 1, characterized in that: The retaining ring is conical in shape, with its lower end connected to the furnace body and its upper end positioned near the furnace opening.

3. A regenerative hearth furnace according to claim 2, characterised in that: The upper end of the furnace body is flush with the furnace body, and a flue is provided on the furnace body. The inner end of the flue is connected to the furnace cavity, and the connection between the flue and the furnace body is located above the lower end of the baffle ring.

4. A regenerative hearth furnace according to claim 3, characterised in that: The flue is located at the rear end of the furnace body.

5. A regenerative furnace according to any one of claims 1 to 4, characterised in that: The bore is flared outwards from bottom to top.

6. A regenerative furnace according to any one of claims 1 to 4, characterised in that: The front end of the furnace body is equipped with a fire observation tube, which is connected to the furnace cavity.

7. A regenerative hearth furnace according to claim 6, characterised in that: The connection between the observation tube and the furnace body is located below the lower end of the retaining ring.

8. A regenerative furnace according to any one of claims 1 to 4, characterised in that: The furnace body includes an outer cylinder and an inner cylinder located inside the outer cylinder, with a heat insulation layer filling the space between the outer cylinder and the inner cylinder.

9. A regenerative furnace as claimed in claim 3, characterized in that: The flue includes a first tube and a second tube fitted onto the first tube. The first tube is connected to the inner cylinder, and the second tube is connected to the outer cylinder.

10. A stove comprising a hearth, characterised in that: The furnace is a regenerative furnace as described in any one of claims 1 to 9.

Images