CN216667751U - Heat reflecting disc and commercial stove using same - Google Patents

Abstract

The utility model belongs to the technical field of stoves, and particularly relates to a heat reflecting disc and a commercial stove using the same. The heat reflection disc comprises a main disc body in a hollow sleeve shape, wherein a cylinder cavity of the main disc body is in a cone shape with a thick upper part and a thin lower part, and the bottom end of the cylinder cavity of the main disc body forms an inserting end opposite to a furnace end; a hollow flue for temporarily storing flue gas is arranged in the wall of the main disc body, a flue inlet communicated with the flue is arranged on the wall of the main disc body in a penetrating manner, and a flue outlet is arranged at the main disc body; the flue gas heat reflection device can ensure the heat reflection effect and accurately guide the flue gas into a rear treatment process on the premise of no loss or little loss of the heat of the flue gas. The commercial stove comprises a hearth wall, wherein a winding interlayer is arranged between the inner wall of the hearth wall and the outer wall of a main disc body; the hearth opening of the hearth wall is surrounded by a circle of furnace ring, and the furnace ring and the heat exchange winding are both connected with the water replenishing tank, so that the flue gas guiding and waste heat utilization functions are realized, and the advantages of simple and quick maintenance are synchronously achieved.

Description

Heat reflecting disc and commercial stove using same

Technical Field

The utility model belongs to the technical field of stoves, and particularly relates to a heat reflecting disc and a commercial stove using the same.

Background

Millions of commercial stoves are used in the Chinese market, and because China is a big energy-shortage country, energy conservation and emission reduction are long-term national policies of China. In the case of commercial stoves, a considerable portion of the products on the market are constructed with conventional walls, which are often built with refractory bricks. Although the hearth wall is low in manufacturing cost, the hearth wall has the defects of easiness in cracking, poor heat reflection characteristic and high maintenance rate. The integrally cast and tile assembled metal hearth walls in the market in recent years have a certain heat reflection effect, but cannot meet the requirement of efficient waste heat utilization.

Disclosure of Invention

The utility model aims to overcome the defects of the prior art, and provides a heat reflecting disc design which has the advantages of ingenious design, compact structure, high waste heat utilization efficiency and simple and convenient maintenance, can ensure the heat reflecting effect and can efficiently guide flue gas into a universal heat exchange module at the rear part of a stove for heat exchange on the premise of extremely low flue gas heat loss; the utility model also aims to provide a commercial stove using the heat reflecting disc, which has the advantages of high efficiency of smoke guiding and waste heat utilization, reliable work and simple and convenient and quick maintenance.

In order to achieve the purpose, the utility model adopts the following technical scheme:

a heat reflective tray, comprising: the outer shape of a cylinder cavity of the main disc body is in a cone shape with a thick upper part and a thin lower part, and the bottom end of the cylinder cavity of the main disc body forms a plug-in end relative to the furnace end; the wall of the main tray body is internally provided with a hollow flue for temporarily storing flue gas, the wall of the tray body wall of the main tray body is provided with a flue inlet communicated with the flue in a penetrating way, and the wall of the outer tray body and/or the tray bottom surface and/or the tray top surface are provided with a smoke outlet communicated with the flue.

Preferably, the main tray body comprises a cylindrical tray bottom with an upward opening and arranged coaxially with the axis of the furnace end, and a conical plate forming a cylindrical cavity of the main tray body is arranged on the tray bottom; the bottom end of the conical plate penetrates through the bottom surface of the barrel at the bottom of the plate to form the inserting end; the top end of the conical plate is placed at the bung hole of the tray bottom and extends outwards along the self conical surface and crosses the bung hole of the tray bottom.

Preferably, the smoke outlet and the smoke inlet are positioned on two sides of the axis of the main tray body.

Preferably, the bottom of the main tray body is provided with a standing foot for overlapping a bottom plate at the hearth wall, and a heat-resistant heat-insulating material is filled between the bottom plate and the bottom of the main tray body.

Preferably, a commercial range using the heat reflection plate is characterized in that: comprises a frame and a hearth wall arranged on the frame; the smoke outlet is positioned on the bottom surface of the main tray body, a smoke exhaust pipe extends into the hearth wall from the smoke outlet, and the smoke exhaust pipe penetrates through the hearth wall and is communicated with the rear smoke component; the rear flue gas assembly is a universal heat exchange module, the smoke exhaust pipe is communicated with an inlet pipe of the rear flue gas assembly, and the water drum pipe comprises the inlet pipe and is communicated with the heat exchange water tank; the universal heat exchange module comprises a heat exchange water tank, an inlet pipe, a heat exchange sleeve, a heat exchange coil and a flue gas discharge pipe, wherein the inlet pipe, the heat exchange sleeve, the heat exchange coil and the flue gas discharge pipe are sequentially arranged along a flue gas advancing path; the heat exchange sleeve is positioned in the cavity of the heat exchange water tank, and the inlet pipe penetrates through the heat exchange water tank and is communicated with the inlet of the heat exchange sleeve; the heat exchange sleeve and the heat exchange coil are coaxially arranged, and an outlet of the heat exchange sleeve is communicated with an inlet of the heat exchange coil; the outlet of the heat exchange coil is communicated with a flue gas discharge pipe.

Preferably, the outer wall of the heat exchange water tank is in a two-section stepped shaft shape with a thick upper part and a thin lower part, the heat exchange coil is coaxially wound in a tank cavity where the large-diameter section of the heat exchange water tank is located, the small-diameter section of the heat exchange water tank radially extends out of a water drum pipe communicated with the tank cavity of the heat exchange water tank, and the flue gas inlet pipe is coaxially arranged in the water drum pipe; the water inlet of the heat exchange water tank is arranged on the outer wall of the water bag pipe, and the steam discharge pipe is arranged on the top of the heat exchange water tank.

Preferably, a flue gas discharge pipe is coaxially arranged inside the steam discharge pipe; the smoke discharge pipe coaxially penetrates through a pipe cavity of the steam discharge pipe and vertically extends upwards, then horizontally penetrates through the pipe wall of the steam discharge pipe to enter a water replenishing tank cavity located beside, then penetrates out of the water replenishing tank to form a waste discharge port, and the water replenishing tank is communicated with a water inlet formed in the water bag pipe through a water replenishing pipeline.

Preferably, a steam box is arranged above the heat exchange water tank, the bottom surface of the steam box and the top surface of the heat exchange water tank are communicated with each other through a water return pipe and a steam discharge pipe, the steam discharge pipe is used for leading steam out of the heat exchange water tank and into the steam box, the steam is discharged to external equipment through a steam outlet of the steam box, and the water return pipe is used for returning hot water subjected to steam-water separation in the steam box to the heat exchange water tank.

Preferably, a steam-water separation baffle is arranged on a communication hole in the steam box, through which the top end of the steam discharge pipe can penetrate; the steam-water separation baffle is fixed on one side of the communication hole, vertically extends upwards and then transversely extends to a position right above the communication hole; the steam outlet is positioned above or behind the steam-water separation baffle.

Preferably, the waste discharge port is connected to a tail end smoke pipe, and an induced draft fan or a venturi tube is arranged at the outlet of the tail end smoke pipe so as to form a negative pressure smoke extraction structure; the air inlet end of the Venturi tube is communicated with the outlet of an external fan through an air pipe, and the side inlet of the Venturi tube is communicated with the outlet of the tail end smoke pipe.

The utility model has the beneficial effects that:

1) traditional single furnace wall structure has been abandoned, through the design of scientific heat reflection dish, on the one hand, utilizes the toper heat reflecting surface that the toper section of thick bamboo chamber of heat reflection dish formed for furnace end department heat can be further by this toper heat reflecting surface focus and radiate to pan bottom, and then has promoted the thermal efficiency of kitchen range. On the other hand, a hollow annular flue is arranged in the heat reflecting disc, so that the purpose of leading out the interior of the flue gas is realized, and the influence of the overflow of the flue gas on the environment of the operating personnel is avoided. Meanwhile, the annular flue further realizes the homogenization and secondary heat supply of heat in the hearth wall, further improves the heat efficiency of the stove, and achieves multiple purposes.

Practice proves that the utility model has the advantages of simple and compact structure, reasonable and efficient heat conduction and convenient use, and can accurately guide the flue gas to a post-treatment process under the premise of low heat loss of the flue gas while ensuring the heat reflection effect.

2) And during actual design, the heat reflecting disc is a combined structure formed by matching the disc bottom and the conical plate, so that the manufacturing cost is reduced, and the cost performance is improved. In addition, the conical plate can be regarded as a cylindrical cavity of the heat reflecting disc and a top surface of the heat reflecting disc, so that when the conical plate extends outwards along the self conical surface and goes over the cylindrical barrel opening of the main disc body, the conical plate can naturally overlap the upper edge of the hearth wall or the hearth ring of the hearth bag or be tangent to the hearth ring, and therefore the maximization of the heat reflecting efficiency and the heat collecting effect of the hearth is ensured.

3) For the heat reflecting tray smoke inlet and outlet described in the present invention, the smoke inlet is typically disposed circumferentially on the conical plate. As a further preferable scheme of the utility model, the smoke outlet can be arranged in the 12-point direction of the top view of the annular flue, so that the flow of the smoke entering the rear-stage universal heat exchange module of the stove is shortened, the heat loss is reduced, the material is saved, and the flow resistance of the smoke is also reduced. On the other hand, the smoke inlet is uniformly arranged at the position, slightly far away from the smoke outlet, of the conical surface, so that the situation that part of the smoke inlet too close to the smoke outlet is excessively gathered due to smaller smoke flowing resistance, and the temperature in the hearth is seriously unbalanced to cause indirect fire bias is avoided.

In addition, in order to easily drain accumulated water from the stove top, the stove top is designed to be low in the front and high in the back, and a part of stove bags are also designed to be low in the front and high in the back, so that the installation position of the stove head cannot be concentric with the top view of the hearth opening, and offset fire compensation must be considered during design. The utility model can conveniently realize the offset compensation and the adjustment of the flame lifting height of the stove burner of the stove through the adjustment of the position of the opening of the nested stove burner on the lower opening plane of the conical surface of the main disc body and the adjustment of the taper of the conical surface, thereby improving the cooking effect and the combustion efficiency. Meanwhile, the utility model can be combined with the furnace ring, so that the gap between the frying pan and the furnace ring is smaller, and the negative pressure smoke extraction design of the tail end smoke pipe ensures that the smoke in the hearth can be smoothly discharged out of the stove through the smoke inlet, the annular flue, the rear smoke component and the like of the heat reflection disc. The heat reflecting disc is used as a part of a hearth to be contacted with high-temperature smoke for a long time, and the adopted high-temperature resistant stainless steel material has the characteristics of high temperature resistance, corrosion resistance, difficult oxidation and easy processing, so the heat reflecting disc has the characteristics of maintenance free, convenient assembly and disassembly and long service life.

For the furnace ring, the furnace ring can be made by rolling a metal pipe with water passing through the inside for heat exchange, and the water inlet and the water outlet are respectively communicated with the external water inlet and the water tank. The design effectively avoids the problems that when the cast iron furnace ring is applied to the traditional furnace, the furnace ring is too high in temperature and easy to crack, the furnace bag connected with the furnace ring below is overheated, and a large amount of heat sources are wasted.

4) The general heat exchange module also is a waste heat utilization module, the function of the design is completely for maximizing waste heat utilization, theoretically, the heat carried by the smoke discharged to the external environment by the smoke discharge pipe is better, however, the heat is limited by the narrow space of the stove and the limitation on the material cost, the manufacturing cost and the maintenance cost, and the pursuit on the water pressure tolerance and the high reliability of the equipment operation, therefore, the scientific heat exchange design of the general heat exchange module is very important.

The utility model abandons the traditional simple and low-efficiency 'air-in-water' or 'water-in-air' type heat exchange structure, and instead adopts the arrangement mode along the line of the inlet pipe, the heat exchange sleeve, the heat exchange cavity, the heat exchange coil and the flue gas discharge pipe to form the traveling path of the flue gas, and the heat exchange water tank, the heat exchange coil and the like are sequentially arranged on the traveling path, thereby utilizing the multi-stage 'air-in-water' mode with higher heat exchange efficiency, maximizing the high-efficiency utilization of the waste heat generated by the combustion of the stove while not influencing the heat efficiency and the fire power of the stove, and finally heating the water between the heat exchange sleeve and the heat exchange water tank to form hot water and steam. The produced hot water or steam is led out through a water supply and drainage pipe or a steam outlet and utilized. After heat exchange is carried out in the mode of gas-in-water, the temperature of the outlet of the flue gas discharge pipe can reach below the dew point of water vapor carried by the flue gas discharge pipe. The utility model obviously and effectively improves the waste heat utilization efficiency of the existing stove.

5) More specifically, the heat exchange water tank also extends to form a water bag pipe, so that when the flue gas is just led out from the hearth wall, the flue gas is immediately coated by a water bag gas structure of the water bag pipe and carries out heat exchange. Correspondingly, after the flue gas is cooled by the heat exchange sleeve, the heat exchange cavity and the heat exchange coil according to the sequence, the flue gas is sequentially absorbed by water vapor in the steam discharge pipe and by cold water in the water replenishing tank according to the sequence when passing through the flue gas discharge pipe, and finally the low-temperature smoke discharging effect is realized. Particularly, the water replenishing tank has the function of replenishing water into each tank body, and after cold water in the water replenishing tank is preliminarily heated by the smoke discharge pipe, the water replenishing tank can directly input hot water into the heat exchange water tank, so that more energy is saved.

In addition, it should be noted that, the play water route of moisturizing case department is advanced to go into the ladle pipe, gets into corresponding heat transfer water tank or even steam discharge pipe according to the preface again, also the moisturizing route of moisturizing case has just constituted the current cooling route by heat to cold of flue gas, has also ensured simultaneously that the flue gas of highest temperature carries out the heat exchange with the water of coldest temperature, does benefit to and promotes heat exchange efficiency.

6) Under the condition of using the heat exchange water tank independently, the water inlet can be kept in the original position without installing a water supplementing tank, the water outlet is arranged at the top of the heat exchange water tank and is communicated to the external water tank through a pipeline, and cold water is input into the general heat exchange module through tap water pressure or a pipeline pump at the water inlet to realize heat exchange between smoke and the cold water. The design has the water heating function under the utilization of waste heat, so that corresponding hot water can be supplied; after the corresponding steam accessories are added, only the water replenishing tank with water level control needs to be additionally arranged, and a certain gap is formed between the final water level height of the water replenishing and the top of the heat exchange water tank, so that the additional functions of steam collection, separation and output can be realized. When the water temperature of the heat exchange water tank reaches a certain degree, the generated steam can gush into the steam discharge pipe along with part of hot water and is further heated by hot smoke in the steam discharge pipe. The steam-water mixture is sprayed into the steam box from the steam discharge pipe and then separated by the steam-water separation baffle, dry steam is sprayed out from a steam outlet above the steam box, and falling hot water flows into the heat exchange water tank along with the water return pipe again.

Drawings

FIGS. 1, 2 and 3 are three views of a heat reflective plate;

FIGS. 4, 5 and 6 are three views of the heat reflection plate in one of the installation states;

FIG. 7 is a schematic view of the assembly of a commercial stove;

FIG. 8 is a schematic structural diagram of a universal heat exchange module;

fig. 9 is a right side view of fig. 8.

The actual correspondence between each label and the part name of the utility model is as follows:

10-Heat reflecting disc

11-conical plate 11 a-smoke inlet 12-tray bottom 12 a-smoke outlet 13-smoke exhaust pipe

20-30 of induced draft fan-40 of hearth wall-50 of heat exchange winding-furnace ring

61-water replenishing tank 62 a-inlet pipe 62 b-heat exchange sleeve 62 c-heat exchange coil

62 d-flue gas discharge pipe 62 e-waste discharge port 63-heat exchange water tank 63 a-water drum pipe

64-steam discharge pipe 65-steam box 65 a-steam-water separation baffle 65 b-steam outlet

66-water return pipe 67-water supplementing pipeline

Detailed Description

For ease of understanding, the specific construction and operation of the present invention is further described herein with reference to FIGS. 1-9:

detailed description of the utility modelreferring to fig. 1-9, the main structure of the heat exchanger is formed by the furnace wall 30 with heat reflecting plate and the rear flue gas assembly installed on the frame behind the furnace wall 30, i.e. the general heat exchange module. Wherein:

the hearth wall 30 of the present invention is arranged on the frame as shown in fig. 7, and has an overall shape of a barrel with an upward opening, including a side wall and a bottom. A furnace ring 50 and a heat reflection disc 10 are arranged in the hearth wall 30, and the furnace ring 50 and the heat reflection disc 10 are both made of high-temperature resistant metal materials. The furnace ring 50 is hollow inside, is used for water and heat exchange, is arranged above the hearth wall 30, and is fixedly arranged on the furnace ladle through welding or bolt connection. When the pot is placed on the stove ring 50, the heat reflection plate, the stove head and the burner form a relatively closed high-temperature combustion area cavity. Heat-resistant heat-insulating materials are filled between the heat reflecting plate 10 and the metal hearth wall 30.

The heat reflection plate 10 is formed by the cone plate 11 and the plate bottom 12. More specifically, the heat reflection plate 10 is similar to a concave structure, the concave heat reflection surface, that is, the conical plate 11 is an inverted right circular cone or an oblique conical surface, the upper part of the conical plate 11 overlaps the position of the barrel opening of the hearth wall 30, and the lower part of the conical plate 11 is nested in the upper part of the burner. When the stove works, the heat reflection disc, the stove head, the stove ring 50 and the pot form a relatively closed combustion area cavity, and the conical plate 11 is further provided with a plurality of smoke inlets 11a for passing hot smoke. The upper edge of the heat reflection plate 10 overlaps or is close to the inner circle of the burner ring 50. For the design of the front low rear blast furnace bag of the Guangdong style commercial cooking stove, in view of preventing the furnace end from deflecting fire, the conical plate 11 can be designed into an oblique cone with steep front half part and gentle rear half part as shown in fig. 2, or designed into a similar concave surface in a casting mode, the specific size is determined according to different structures of the furnace wall 30, or under the condition of keeping the furnace wall to be a regular conical surface, the deflection fire compensation is realized by adjusting the position of a round surface formed by the nesting opening of the furnace end at the lower opening of the conical surface and the bottom plate. The bottom surface of the tray bottom 12 of the heat reflection tray is provided with a large smoke outlet 12a which is used for extending outwards to form a smoke exhaust pipe 13 for leading high-temperature smoke into a corresponding structure at the rear part of the stove.

Therefore, the design of the hearth can ensure that when the pot is flatly placed on the stove ring 50, flame generated by combustion at the stove head is just upwards sprayed and spread along the central position of the pot bottom, so that the effects of no deflection and uniform fire power are achieved; the design can effectively reduce the space of the cavity of the high-temperature combustion area of the hearth wall 30, reduce the heat loss, and simultaneously can better reflect the heat to the lower part of the cooker in an infrared mode after the concave reflecting surface, namely the conical plate 11, is burnt red. When hot flue gas enters an annular flue in the heat reflection disc 10 from a cavity of the high-temperature combustion area through a flue inlet 11a formed in the conical plate 11, the disc bottom 12 and the conical plate 11 can be heated, a high-temperature-resistant heat insulation material with a certain thickness is laid above a bottom plate of the hearth wall 30, and the heat reflection disc 10 penetrates through the heat insulation material layer through supporting legs and is placed at the bottom of the hearth wall 30. Because the hearth wall 30 is a small-volume closed space for combustion, the heat loss of the hearth wall 30 is greatly reduced while ensuring that the cooking stove heating pot obtains high heat efficiency. In addition, the design of heat exchange of the furnace ring can effectively reduce the temperature of the furnace ladle, and can avoid the waste of a large amount of tap water due to the fact that tap water is put for a long time to cool the furnace ladle while improving the comfort degree of a cook. In addition, the design of the independent heat reflecting disc combined with the heat-resistant heat-insulating material of the hearth can effectively avoid the defect that the hearth wall 30 is not easy to maintain after being burnt out, and the heat reflecting disc 10 is convenient and quick to replace. The heat exchange winding 40 is arranged in the hearth and used for improving the utilization rate of the rest heat.

Further, the universal heat exchange module provided by the utility model comprises a heat exchange assembly, a steam box 65 and a water replenishing box 61. The heat exchange assembly comprises an inner smoke cavity and an outer water cavity which are made of corrosion-resistant and high-temperature-resistant metal materials. The inner flue gas cavity comprises an inlet pipe 62a, a heat exchange sleeve 62b, a heat exchange coil 62c and a flue gas outlet pipe 62 d; as shown in fig. 7, the inlet pipe 62a is communicated with the smoke exhaust pipe 13 at the heat reflection plate to receive the high temperature smoke. To increase the heat exchange surface area, the heat exchange jacket 62b may form a long cylindrical cup structure extending downward. The bottom of the cylindrical water cup structure is arranged below and close to the bottom of the heat exchange water tank 63, the upper edge of the cup opening is fixedly connected with the top plate of the heat exchange water tank 63 through a fixing piece, water filled in the cup is communicated with water in an external water cavity, and the bottom of the cup is provided with a through hole; the external water chamber includes a water-in-water pipe 63a, a heat exchange water tank 63, a steam discharge pipe 64, and the like. The heat exchange sleeve 62b with the cup-shaped structure and the bottom provided with the hole enables high-temperature flue gas in the heat exchange sleeve 62b to pass through, water in the heat exchange water tank can be driven to generate rapid temperature rise change, heated hot water is restrained by the heat exchange sleeve 62b and the heat exchange coil 62c together and generates a circulation effect around the outer wall of the heat exchange sleeve, and the temperature rise efficiency of the water can be greatly improved. In addition, the aperture of perforating hole is less than the rim of a cup bore of heat transfer cover 62b, heat transfer cover 62 b's cup chamber structural design had both formed the water boiling structure of similar pan to a certain extent, area of contact is bigger, and present the high temperature flue gas to form the heating effect of ring winding cladding formula to water in the cup structure, thereby further promotion heat exchange efficiency, simultaneously, can realize through the perforating hole that the free flow and the circulation of water liquid for cup chamber about and heat transfer coil clearance between about, avoid heat transfer coil below to cause into water unsmooth and lead to local short time dry combustion method because of acutely gushing under the steam mode. If necessary, an induced draft fan 20 or a venturi tube can be installed at the outlet of the end smoke tube as shown in fig. 7 to form a negative pressure smoke extraction structure, so as to improve the outflow efficiency of the high-heat smoke.

When the boiler works, high-temperature flue gas is input into the heat exchange sleeve 62b from the smoke outlet 12a at the hearth through the inlet pipe 62a, heat carried by the high-temperature flue gas is firstly subjected to heat exchange with water in the water drum pipe 63a, the primarily cooled hot flue gas enters the lower part of the heat exchange water tank 63, and when the hot flue gas flows through a gap formed by the heat exchange water tank 63 and the cylindrical cup-shaped heat exchange sleeve 62b, the hot flue gas is subjected to heat exchange with water outside the heat exchange water tank 63 and inside the heat exchange sleeve 62 b. The further reduced temperature hot flue gas then enters the heat exchange coil 62 c. The heat exchange coil 62c is a plurality of high temperature resistant and corrosion resistant metal coils with multi-turn spiral structures, the inlet of the heat exchange coil is arranged on a small cigarette collecting boss protruding outwards in the middle of the heat exchange water tank 63, and the outlet of the heat exchange coil is arranged on the side wall of the cigarette collecting box above the heat exchange water tank 63. The cigarette case that converges is flat cavity structure, and whole heat exchange water tank's moisturizing water level is a little higher than cigarette case upper plane that converges. The upper part of the smoke gathering box is provided with a first vertical pipe section of a smoke outlet pipe 62 d. Under the waste heat utilization hot water production mode, an induced draft fan is arranged at the tail end of the first section of vertical pipe section and used for directly extracting flue gas, so that the flue gas can conveniently enter a rear-stage heat exchange device of a cooking range from a hearth through a flue, and the waste heat utilization efficiency of the cooking range is improved; in the waste heat utilization steam generation mode, at the first section of vertical pipe section, the flue gas discharge pipe 62d passes through the top plate of the heat exchange water tank 63 and then enters the steam discharge pipe 64. The low-temperature smoke flows from the smoke trap box into the steam discharge pipe 64 and flows laterally at a certain height into the horizontal section of the smoke discharge pipe 62d installed in the water replenishment tank 61. The water inlet of the water replenishing tank 61 is connected with tap water, and the water outlet is connected with a water drum pipe 63a through a water replenishing pipeline 67.

The water replenishing tank 61 is composed of a metal floating ball and valve assembly for controlling water level and water inlet, and a second section of vertical pipe section of the flue gas discharge pipe 62d in the water replenishing tank 61, and the metal floating ball is used for controlling the final water level of the equipment. The structure of the flue gas discharge pipe 62d in the water replenishing tank 61 is a thin-walled metal pipe or a thin-walled metal pipe bundle with high temperature resistance and corrosion resistance. After entering the flue gas discharge pipe 62d in the water replenishing tank 61, the flue gas further exchanges heat with low-temperature tap water in the water replenishing tank 61, and finally is discharged to the atmospheric environment from the waste discharge port 62 e.

The upper end of the steam outlet pipe 64 is connected with a steam box 65, and the steam box 65 comprises a steam-water separation baffle 65a, a water return pipe 66 and a steam outlet 65 b. The steam-water mixture generated in the external water cavity gushes upwards into the steam box 65 through the gap between the steam outlet pipe 64 and the flue gas outlet pipe 62d, and the sprayed steam-water mixture is blocked by the steam-water separation baffle 65 a. The steam-water separation baffle 65a is in an inverted L-shaped arrangement form, the baffle at the upper transverse section is positioned right above the steam discharge pipe 64, and the projection size is larger than the pipe diameter of the steam discharge pipe 64. After the steam-water mixture impacts the steam-water separation baffle 65a, the kinetic energy of the water is reduced and bounces off and falls back and converges to a water return pipe 66 installed at the steam box 65 far away from the steam outlet 65 b. As can be seen in FIG. 9, the water return pipe 66 is connected with the steam box 65 at a low position and is connected with the heat exchange water tank 63 at a lower position. The top of the steam box 65 is provided with a steam outlet 65b, a pressure release valve, a pressure gauge and the like.

In addition, the utility model is also provided with an explosion-proof sewage draining outlet. The specific principle is as follows: the heat exchange water tank 63 and the heat exchange sleeve 62b are penetrated through a high-temperature resistant and corrosion resistant metal pipe and extend to the outside atmosphere, a rotating shaft is fixedly arranged on one side of a port of the heat exchange water tank, and a seesaw type balance torque system is formed by the port sealing plate, the rotating shaft sleeve and a counterweight end on the other side through the rotating shaft. When the stove is not used and is in normal combustion, the resistance moment formed by the counterweight end of the port sealing plate can keep the port sealing plate closed; however, when the furnace wall 30 is deflagrated, the suddenly increased pressure of the flue gas is conducted to the heat exchange water tank 63 and pushes the port sealing plate open, thereby realizing the pressure relief effect. When the pressure relief is finished, the port sealing plate is closed, thereby startingSo as to achieve the explosion-proof effect. Another use of this design is for blowdown: when the temperature of the flue gas in the heat exchange sleeve 62b is lower than the dew point temperature thereof, condensation and condensation can occur, because there are a small amount of acidic substances in the flue gas, such as: NO_x、CO₂And the condensate water is weakly acidic, and the design of the utility model is convenient for the acidic condensate water to slide to the port sealing plate under the action of gravity. A small amount of water leaks from a gap between the port and the sealing plate, when more condensed water is accumulated in a vertical pipeline at the upper end of the port, and when the height of the sealing plate reaches a sufficient height, the acting torque generated by the pressure can overcome the resisting torque of a torque system to push the sealing plate open, so that the effect of sewage discharge is achieved.

It will, of course, be evident to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present specification describes embodiments, not every embodiment includes only a single embodiment, and such description is for clarity purposes only, and it is to be understood that all embodiments may be combined as appropriate by one of ordinary skill in the art to form other embodiments as will be apparent to those of skill in the art from the description herein.

The techniques, shapes, and configurations not described in detail in the present invention are all known techniques.

Claims (10)

1. A heat reflective tray, characterized by: the main disc body is hollow and sleeve-shaped, the shape of a cylinder cavity of the main disc body is conical, the upper part of the cylinder cavity is thick, the lower part of the cylinder cavity is thin, and the bottom end of the cylinder cavity of the main disc body forms an inserting end opposite to a furnace end; a hollow flue for temporarily storing smoke is arranged in the wall of the main tray body, a smoke inlet (11a) communicated with the flue penetrates through the wall of the main tray body, and a smoke outlet (12a) communicated with the flue is arranged at the outer wall and/or the bottom surface and/or the top surface of the main tray body.

2. A heat reflection plate according to claim 1, wherein: the main tray body comprises a cylindrical tray bottom (12) with an upward opening and arranged coaxially with the axis of the furnace end, and a conical plate (11) forming a barrel cavity of the main tray body is arranged on the tray bottom (12); the bottom end of the conical plate (11) penetrates through the barrel bottom surface of the tray bottom (12) so as to form the inserting end; the top end of the conical plate (11) is placed at the bucket opening of the tray bottom (12) and extends outwards along the self conical surface and crosses the bucket opening of the tray bottom (12).

3. A heat reflection plate according to claim 2, wherein: the position of the smoke outlet (12a) and the position of the smoke inlet (11a) are positioned at two sides of the axis of the main tray body.

4. A heat reflection plate according to claim 3, wherein: the bottom of the main tray body is provided with stand legs for overlapping the bottom plate at the hearth wall (30), and heat-resistant heat-insulating materials are filled between the bottom plate and the bottom of the main tray body.

5. A commercial range using the heat reflection plate of claim 1 or 2 or 3 or 4, characterized in that: comprises a frame and a hearth wall (30) arranged on the frame; the smoke exhaust port (12a) is positioned on the bottom surface of the main tray body, the smoke exhaust port (12a) extends a smoke exhaust pipe (13) into the hearth wall (30), and the smoke exhaust pipe (13) penetrates through the hearth wall (30) and then is communicated with the rear smoke component; the rear flue gas component is a universal heat exchange module, the smoke exhaust pipe (13) is communicated with an inlet pipe (62a) of the rear flue gas component, and the water drum pipe (63a) comprises the inlet pipe (62a) and is communicated with a heat exchange water tank (63); the universal heat exchange module comprises a heat exchange water tank, an inlet pipe (62a), a heat exchange sleeve (62b), a heat exchange coil (62c) and a flue gas outlet pipe (62d), wherein the inlet pipe, the heat exchange sleeve, the heat exchange coil and the flue gas outlet pipe are sequentially arranged along a flue gas travelling path; the heat exchange sleeve (62b) is positioned in the cavity of the heat exchange water tank (63), and the inlet pipe (62a) penetrates through the heat exchange water tank (63) and is communicated with the inlet of the heat exchange sleeve (62 b); the heat exchange sleeve (62b) and the heat exchange coil (62c) are coaxially arranged, and the outlet of the heat exchange sleeve (62b) is communicated with the inlet of the heat exchange coil (62 c); the outlet of the heat exchange coil (62c) is communicated with a flue gas outlet pipe (62 d).

6. The commercial stove of claim 5, wherein: the outer wall of the heat exchange water tank (63) is in a two-section stepped shaft shape with a thick upper part and a thin lower part, a heat exchange coil (62c) is coaxially wound in a tank cavity where a large-diameter section of the heat exchange water tank (63) is located, a small-diameter section of the heat exchange water tank (63) radially extends out of a water bag pipe (63a) communicated with the tank cavity of the heat exchange water tank, and a flue gas inlet pipe (62a) is coaxially arranged in the water bag pipe (63 a); the water inlet of the heat exchange water tank (63) is arranged on the outer wall of the water bag pipe (63a), and the steam discharge pipe (64) is arranged on the top of the heat exchange water tank (63).

7. The commercial stove of claim 6, wherein: a flue gas discharge pipe (62d) is coaxially arranged inside the steam discharge pipe (64); the flue gas discharge pipe (62d) coaxially penetrates through a pipe cavity of the steam discharge pipe (64) and vertically extends upwards, then horizontally penetrates through the pipe wall of the steam discharge pipe (64) to enter a box cavity of the water replenishing tank (61) located beside, then penetrates out of the water replenishing tank (61) to form a waste discharge port (62e), and the water replenishing tank (61) is communicated with a water inlet formed in a water drum pipe (63a) through a water replenishing pipeline (67).

8. The commercial stove of claim 7, wherein: set up steam box (65) above heat transfer water tank (63), through wet return (66) between the bottom surface of steam box (65) and the top surface of heat transfer water tank (63) with steam discharge pipe (64) intercommunication each other, steam discharge pipe (64) are used for drawing steam out and leading-in steam box (65) in heat transfer water tank (63), and the steam outlet via steam box (65) discharges to external equipment again, and wet return (66) are used for flowing back hot water after steam-water separation in steam box (65) to heat transfer water tank (63).

9. The commercial stove of claim 8, wherein: a steam-water separation baffle (65a) is arranged on a communication hole which is arranged in the steam box (65) and through which the top end of the steam discharge pipe (64) can penetrate; the steam-water separation baffle (65a) is fixed on one side of the communication hole, and the steam-water separation baffle (65a) firstly vertically extends upwards and then transversely extends to the position right above the communication hole; the steam outlet (65b) is positioned above or behind the steam-water separation baffle (65 a).

10. The commercial stove of claim 7, wherein: the waste discharge port (62e) is connected to the tail end smoke pipe, and an induced draft fan or a Venturi tube is arranged at the outlet of the tail end smoke pipe so as to form a negative pressure smoke extraction structure; the air inlet end of the Venturi tube is communicated with the outlet of an external fan through an air pipe, and the side inlet of the Venturi tube is communicated with the outlet of the tail end smoke pipe.

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