JP2017125657A - Heating cooker - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a heating cooker that comprises a dissolution type heat exchanger and facilitates the replacement of a liquid medium.SOLUTION: A heating cooker comprises: a cooking container provided with heating means for heating food to be cooked; a dissolution type heat exchanger 3 for storing a liquid medium, and for treating exhaust gas through the liquid medium; a first exhaust passage 13 connected to the cooking container and the dissolution type heat exchanger 3, and for conveying exhaust gas; a second exhaust passage 18 connected to the dissolution type heat exchanger 3, and for conveying exhaust gas treated in the dissolution type heat exchanger 3 downstream from the dissolution type heat exchanger 3; gas transfer means 19 for transferring exhaust gas; and exhaust gas cooling means 4 for cooling the first exhaust passage 13.SELECTED DRAWING: Figure 5

Description

  The present invention relates to waste heat treatment of a cooking device used in a general household kitchen or a commercial kitchen.

  In the conventional cooking device, the thing of the structure which condenses and collect | recovers the vapor | steam generate | occur | produced with the cooking device is proposed (for example, refer patent document 1). The cooking device described in Patent Document 1 includes an inner pot in which an object to be heated is placed, a container cover that houses the inner pot, a main body that includes a heating device that heats the inner pot, and an inner pot that can be opened and closed freely. Covered with an inner lid, an outer lid that covers the main body so that it can be opened and closed, and an inner lid that is detachably mounted, and is provided on the inner lid side of the outer lid or the inner lid. It is provided on the outer lid so as to store the tobacco component to be stored and return to the inner pot, and to the tobacco return unit downstream of the tobacco return unit, and is heated during the heating operation by the heating device. A steam conduit portion that guides the steam generated from the product to the outside or the water tank accommodated in the main body, and a heat storage agent that is provided on the outer periphery of the steam conduit portion and absorbs heat from the steam conducted through the steam conduit portion. Yes.

  In the above configuration, the operation will be described. When the heating device heats the inner pot, a liquid such as water enclosed in the inner pot boils and steam is generated. This steam flows into the return part. Next, the steam that has flowed into the stick return part conducts through the steam conduit part connected to the stick return part. Subsequently, the steam that has passed through the steam conduit is guided into the water sealed in the water tank, and is cooled and condensed by the water. When the steam is cooled, the latent heat of the steam is absorbed by the water in the water tank, and the temperature of the water in the water tank rises according to the amount of steam condensation. A part of the steam absorbed by the heat storage agent is condensed and condensed.

JP 2014-1111218 A

  However, the conventional cooking device has a problem that a large amount of water is required for the water sealed in the water tank in consideration of a temperature rise according to the amount of steam condensation. For example, when the cooking device is a rice cooker, about 1 L of water is required in the aquarium, a lot of water is required, and the volume of the aquarium increases and the weight of the aquarium increases. Therefore, while the volume of the rice cooker main body which accommodates an aquarium inevitably becomes large, when replacing the water in an aquarium, it had the subject that it was necessary to handle a heavy aquarium.

  The present invention solves the above-described conventional problems, and heats the melting heat exchanger that stores the liquid medium by reducing the weight by cooling the exhaust gas generated in the cooking device with the liquid medium in advance. The purpose is to provide cooking equipment.

In order to achieve the above object, the cooking device of the present invention comprises:
A cooking container provided with a heating means for heating the cooking ingredients;
A melting heat exchanger for storing a liquid medium and cooling the exhaust gas through the liquid medium;
A first exhaust passage connected to the cooking vessel and the melting heat exchanger, and carrying exhaust gas from the cooking vessel to the melting heat exchanger;
A second exhaust passage connected to the melting heat exchanger and transporting the exhaust gas treated in the melting heat exchanger downstream of the melting heat exchanger;
Gas transfer means for transferring exhaust gas, and
An exhaust gas cooling means for cooling the first exhaust passage is provided.

  When the heating means heats the cooked food, exhaust gas containing water vapor, oil, odor components and the like is generated. Subsequently, the gas transfer means transfers the exhaust gas from the cooking container to the melting heat exchanger via the first exhaust path. At that time, the exhaust gas cooling means cools the exhaust gas passing through the first exhaust passage through the first exhaust passage wall, and the exhaust gas whose temperature has decreased flows into the melting heat exchanger. The exchanger can use lightweight resin. The exhaust gas is cooled by the liquid medium that is in direct contact, and the exhaust gas whose temperature has been reduced condenses the water vapor and oil contained therein and dissolves in the liquid medium together with water-soluble odor components. The purified gas is discharged via the second exhaust path by the gas transfer means. However, the liquid medium is increased by the amount of water vapor or oil condensed, and when the oil or odor component is dissolved, the dissolving ability is lowered. Therefore, the liquid medium needs to be replaced after cooking.

  During cooking, the liquid medium takes heat, particularly latent heat, from the exhaust gas, so the temperature rises and the liquid medium mainly increases the condensation of water vapor. On the other hand, since the exhaust gas cooling means cools the exhaust gas, the amount of liquid medium stored can be reduced to an amount where there is no possibility of boiling because the temperature rise of the liquid medium can be suppressed, thereby saving resources. Therefore, since the melting type heat exchanger becomes light, replacement of the liquid medium is facilitated.

  The cooking device of the present invention can reduce the weight of the melting heat exchanger that stores the liquid medium and cools the exhaust gas generated by the cooking device.

The perspective view which showed the heating cooking appliance in Embodiment 1 of this invention The partial cross section perspective view seen from the back except the induction heating cooking appliance etc. of the heating cooking appliance in Embodiment 1 of this invention Sectional drawing which showed the cooking container of the heating cooking appliance in Embodiment 1 of this invention Sectional drawing which showed the melting-type heat exchanger of the heating cooking appliance in Embodiment 1 of this invention Sectional drawing which shows the positional relationship of the melt | dissolution heat exchanger of the heating cooking appliance in Embodiment 1 of this invention, an exhaust-gas cooling means, and a gas transfer means.

1st invention has the cooking container provided with the heating means which heats cooking ingredients,
A melting heat exchanger for storing a liquid medium and cooling the exhaust gas through the liquid medium;
A first exhaust passage connected to the cooking vessel and the melting heat exchanger, for transporting exhaust gas from the cooking vessel to the melting heat exchanger;
A second exhaust path connected to the melting heat exchanger and transporting the exhaust gas treated in the melting heat exchanger downstream of the melting heat exchanger;
Gas transfer means for transferring exhaust gas, and
Exhaust gas cooling means for cooling the first exhaust passage is provided.

According to such an invention, when the heating means heats the inside of the cooking container, the temperature of the cooking food rises and exhaust gas containing water vapor, oil, odor components and the like is generated. Subsequently, the gas transfer means transfers the exhaust gas from the cooking container to the melting heat exchanger via the first exhaust path. At that time, the exhaust gas cooling means cools the exhaust gas passing through the first exhaust passage through the first exhaust passage wall, and the exhaust gas whose temperature has decreased flows into the melting heat exchanger. The exchanger can be made of lightweight resin at a lower price than metal. In particular, if a transparent resin is used, the contents of the melting heat exchanger can be checked. The exhaust gas is cooled by the liquid medium in direct contact with it, and the exhaust gas whose temperature has been reduced condenses the water vapor and oil contained therein and dissolves in the liquid medium together with water-soluble odor components. That is, the melting heat exchanger performs exhaust heat treatment such as cooling, dehumidification, smoke removal, and deodorization on the exhaust gas, so that the exhaust gas becomes a low-temperature purified gas, and the purified gas is converted into a second gas by the gas transfer means. It is discharged via the exhaust path. However, if the liquid medium is increased by the amount of water vapor or oil condensed, and the oil or odor component is dissolved, the dissolving ability is lowered. After that, oil adheres to the melting heat exchanger and becomes dirty, and further, the liquid medium, fungi and fungi are generated in the melting heat exchanger, and odor is generated. After cooking, replacement and dissolution of the liquid medium Cleaning of the heat exchanger is necessary.

  During cooking, the liquid medium takes heat, particularly latent heat, from the exhaust gas, so the temperature rises and the liquid medium mainly increases the condensation of water vapor. On the other hand, since the exhaust gas cooling means cools the exhaust gas, the amount of liquid medium stored can be reduced to an amount where there is no possibility of boiling because the temperature rise of the liquid medium can be suppressed, thereby saving resources. Therefore, since the melting type heat exchanger becomes light, replacement of the liquid medium is facilitated.

  In the second invention, in particular, the exhaust gas cooling means of the first invention is configured to cool at least a part of the first exhaust path with a part of the second exhaust path.

  The purified gas flowing into the second exhaust path from the melting heat exchanger is almost saturated. Since the purified gas flowing through the second exhaust passage takes heat from the exhaust gas passing through the first exhaust passage, the purified gas rises in temperature and lowers the relative humidity. Accordingly, the purified gas discharged from the second exhaust path is cooled by the outside air, but the relative humidity of the purified gas does not drop to the dew point, so no steam is generated and the kitchen is not contaminated with water droplets.

  According to a third aspect of the invention, in particular, the exhaust gas cooling means according to the first or second aspect of the invention is characterized in that a part of the first exhaust path and a part of the second exhaust path are installed close to each other. Since the purified gas passing through a part of the second exhaust path flows along the outer wall of the first exhaust path, the exhaust gas passing through a part of the first exhaust path can be sufficiently cooled.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. Note that the present invention is not limited to the embodiments.

(Embodiment 1)
1 is a perspective view showing a cooking device according to Embodiment 1 of the present invention, FIG. 2 is a partially sectional perspective view seen from the rear, excluding an induction cooking device of the cooking device, and FIG. FIG. 4 is a sectional view showing a melting heat exchanger of the cooking device, FIG. 5 is a melting heat exchanger, exhaust gas cooling means, and gas transfer of the cooking device. It is sectional drawing which shows the positional relationship of a means.

  As shown in FIGS. 1 to 5, the cooking device 1 includes an induction heating cooker (not shown), a grill 2, a melting heat exchanger 3, and a double-pipe exhaust gas cooling means 4. It is inserted into and covered with a top plate 6 and incorporated in the kitchen cabinet.

  As shown in FIG. 3, the grill 2 is mounted on a cooking container 7 for storing cooking ingredients formed in a substantially cube from the front to the rear, a grill floor 8 made of heat-resistant glass disposed in the cooking container 7, and the grill floor 8. An aluminum or iron grill pan 9 coated with fluorine, a heating means 10 comprising a far-infrared tube heater disposed above and below the cooking container 7 to heat the cooking ingredients, and an open / close disposed in front of the housing 5 It is composed of a free door 11.

  It has a first exhaust passage 13 that is connected to the cooking container 7 and the melting heat exchanger 3 and conveys the exhaust gas from the cooking container 7 to the melting heat exchanger 3.

  As shown in FIG. 4, the melting heat exchanger 3 is configured to store a liquid medium and process exhaust gas through the liquid medium. The melting heat exchanger 3 stores 200 cc to 700 cc of water as a liquid medium (predetermined amount of water 500 cc in the case of 10 medium-sized samama), and communicates with the processing container 12 having a space in the upper portion and the cooking container 7. A liquid medium cooling means 16 that is composed of a gas ejection section 14 that is coupled to the first exhaust path 13 and ejects exhaust gas into water and a gas discharge section 15 provided above the water surface and that cools water. Incorporated. The gas ejection part 14 is formed in a duct shape, the upstream end of the gas ejection part 14 is connected to the first exhaust path 13 above the water surface, and the downstream end of the gas ejection part 14 is a gas near the bottom surface of the processing vessel 12. The spout 17 is opened. The gas discharge unit 15 is connected to a second exhaust path 18 opened in the rear of the housing 5, and exhausts exhaust gas from the melting heat exchanger 3 to the second exhaust path 18. The second exhaust path 18 is connected to the melting type heat exchanger 3, and the exhaust gas processed in the melting type heat exchanger 3 is conveyed downstream of the melting type heat exchanger 3.

  Further, the cover 24 is provided with a gap before the inlet of the gas discharge unit 15. And the fitting part 25 provided with sealing members, such as an O-ring, detachably couples the first exhaust passage 13 and the gas ejection part 14, the gas exhaust part 15 and the induction pipe 23, and is above the water surface. Is located. In addition, after removing the door 38, the processing vessel 12 constituting the melting heat exchanger 3 can be detached from the first exhaust passage 13 and the induction pipe 23 by the fitting portion 25, and has a detachable configuration. Yes, the water stored in the processing container 12 can be drained.

  The liquid medium cooling means 16 is formed by a duct-shaped outside air ejection portion 26, and the upstream end of the outside air ejection portion 26 communicates with the outside of the melting heat exchanger 3 (inside the casing 5) above the water surface (in front). The outside air outlet 27 is opened, and the downstream end of the outside air ejection portion 26 opens an outside air outlet 28 near the bottom surface of the processing container 12. Therefore, the outside air ejection part 26 will eject outside air into the water.

  The bubble plate 29 is disposed in the vicinity of the upper side of the gas jet port 17 and the outside air jet port 28, and is dispersed in large numbers to open the bubble ports 30 (for example, φ1 to φ4). Further, the partition plate 31 is erected so as to bisect the space sandwiched between the bottom surface of the processing container 12 and the bubble plate 29 so that the exhaust gas and the outside air are not mixed.

  As shown in FIG. 5, the gas transfer means 19 which is an ejector for transferring exhaust gas is connected to a blower 20, a discharge port of the blower 20, a nozzle 21 for reducing drive air and increasing a flow velocity, and a nozzle 21 And the induction tube 23 connecting the gas discharge part 15 and the chamber 22 to each other. The chamber 22 and the induction tube 23 are part of the second exhaust path 18. Therefore, the gas transfer means 19 is disposed in the second exhaust path 18.

  The exhaust gas cooling means 4 is provided with a ring-shaped cooling path 33 which is a part of the second exhaust path 18 so as to surround the outer surface of the cylindrical heat radiation path 32 which is a part of the first exhaust path 13. ing. The heat radiation path 32 and the cooling path 33 are arranged close to each other, and the outer pipe constituting the heat radiation path 32 has a double pipe structure shared with the inner pipe constituting the cooling path 33, and cooling is performed at both ends of the cooling path 33. A passage inlet 34 and a cooling passage outlet 35 are opened. Further, the downstream side of the chamber 22 is connected to the cooling path inlet 34 via the second exhaust path 18. The heat radiation path 32 incorporates a heat transfer promotion plate 36 (for example, a shape obtained by twisting a long plate like a ribbon).

  The housing 5 has a large number of suction ports 37 on the front surface, and is provided with a detachable door 38. The top plate 6 is provided on the upper surface of the cooking device 1 using crystallized glass as a material, and a heating container (not shown) such as a pan is placed on the top plate 6. Further, an exhaust port (not shown) is formed in the gap between the rear side of the top plate 6 and the housing 5, and the cooling path outlet 35 is exposed.

  The control unit (not shown) controls the heating unit 10 and the blower 20.

The operation of the cooking device 1 configured as described above will be described.
As shown in FIGS. 1 and 3, first, the user opens the door 11 on the grill pan 9 on which cooking ingredients (not shown) such as fish are placed, places the grill pan 8 on the grill floor 8, and then closes the door 11. Further, the user opens the door 38 of the cooking device 1, pulls out the processing container 12 in the melting heat exchanger 3, stores a predetermined amount of room temperature water in the processing container 12, and pushes the processing container 12. The processing container 12 is attached to the cooking device 1. Further, the user operates an operation switch (not shown) as input means to instruct heating.

  Next, according to an instruction from the operation switch, the control unit appropriately energizes the heating unit 10 and the blower 20. The upper heating means 10 burns the upper surface of the cooking ingredients directly from the radiation from the far-red tube heater or by reflection on the inner wall of the cooking vessel 7. Radiation from the far-red tube heater of the lower heating means 10 is reflected directly or by the inner wall of the cooking vessel 7 and then passes through the grill floor 8 to heat the lower surface of the grill pan 9. Subsequently, the grill pan 9 whose temperature has risen burns the lower surface of the cooked food material by heat conduction.

  For example, when the cooked food is sansan, the control unit starts driving the blower 20 and the heating means 10 burns the upper and lower surfaces of the sansan. At the same time, the control unit estimates the number (heat capacity) of salted sesame from the temperature change of a temperature sensor (not shown) arranged in the cooking container 7 or the predetermined temperature arrival time, and determines the baking time for simmering the salted sesame. . Thereafter, the control unit stops the heating means 10 when the determined baking time has elapsed.

  Further, during cooking, the temperature in the cooking container 7 rises to about 200 to 300 ° C. At that time, heating by convection is also added, and the temperature of the salt is also raised, and steam, oil, odor components, etc. are generated from the salt. . Further, steam, oil, etc. are heated by the upper heating means 10 and grill pan 9 and also heated by the previous convection, and include exhaust gas containing superheated steam, oil vapor, and air flowing in from the gap between the cooking containers 7 and the like. (Thick black arrow) is generated.

  On the other hand, as shown in FIGS. 1, 2, and 5, the blower 20 sucks outside air (thin black arrows) from the suction port 37 opened in the front surface of the housing 5 into the housing 5, and then drives air from the blower 20. To the nozzle 21 (for example, 50 to 200 L / min). When the driving air is squeezed by the nozzle 21 to increase the speed and is ejected to the chamber 22, the inside of the chamber 22 becomes negative pressure. Due to this negative pressure suction action (ejector effect), the exhaust gas (for example, 10 to 30 L / min) in the cooking vessel 7 flows into the first exhaust path 13 and the heat dissipation path 32 in the exhaust gas cooling means 4. The melt heat exchanger 3, the gas transfer means 19, the second exhaust path 18, and the cooling path 33 are sequentially discharged from the cooling path outlet 35, and finally exhausted from the exhaust port (not shown) to the outside. .

In the heat radiation path 32, the exhaust gas is disturbed by the heat transfer promotion plate 36 to improve the heat transfer rate, and flows along the inner wall of the heat radiation path 32. In the cooling path 33, purified gas (substantially the same temperature as the water in the processing container 12) described later flows through the cooling path 33 and along the outer wall of the heat radiation path 32. Therefore, the purified gas flowing through the cooling path 33 cools the exhaust gas flowing through the heat radiation path 32. As a result, as shown in FIG. 4, the exhaust gas (thick black arrow) is sufficiently cooled by the purified gas, drops in temperature to, for example, 100 to 120 ° C., and flows into the gas ejection portion 14 in the melting heat exchanger 3. . As a result, a high heat-resistant resin, such as polymethylpentene, which is cheaper than metal can be used as the material of the processing container 12. In particular, if a transparent resin is used as the material of the processing container 12, the internal state of the melting heat exchanger 3 can be checked. In addition, the temperature of oil smoke, oil vapor having a high boiling point, and superheated steam is also reduced in temperature, condensed on the inner surface of the heat radiation path 32, flows downstream, flows into the gas ejection part 14, and flows into the processing container 12. That is, almost no oil or condensed water remains in the heat radiation path 32.

  In the melting heat exchanger 3, the space above the water surface of the processing vessel 12 is also at a negative pressure (for example, 0.5 to 1.0 kPa). Exhaust gas sucked by the negative pressure passes through the gas jetting part 14 provided in the processing container 12, and many bubbles (shown by black circles in FIG. 4) from a large number of bubble ports 30 formed in the bubble plate 29. And then ascends into the water and reaches the space above the water surface of the processing vessel 12. At that time, the exhaust gas is deprived of heat by the water, the temperature is lowered to almost the water temperature, the superheated steam is condensed and absorbed (increase in water), and the oil vapor and the oil smoke are also condensed and remain in the processing vessel 12. Further, the water-soluble odor component is dissolved in water. According to the experimental results, for example, valeraldehyde (burnt odor) decreased from 450 μg / m3 to 100 μg / m3, and decane (gasoline odor) decreased from 860 μg / m3 to 120 μg / m3.

  At the same time, the outside air (thin black arrow) is sucked (for example, 10 to 30 L / min) from the outside air port 27 by the negative pressure in the space above the water surface of the processing container 12, and the outside air serving as the liquid medium cooling means 16. A large number of bubbles (shown by white circles in FIG. 4) are ejected into the water from a large number of bubble openings 30 formed in the bubble plate 29 through the ejection portion 26 and rise above the water surface of the processing vessel 12. Reach into space. At that time, the outside air takes heat from the water, and the temperature rises almost to the water temperature to lower the relative humidity, so that the water evaporates into the outside air. This increase in evaporation and water due to condensed water is suppressed. In other words, the amount of water stored can be reduced to the amount where there is no possibility of boiling as much as the temperature rise of the water is suppressed, thus saving resources. Moreover, since the melt | dissolution heat exchanger 3 becomes light, replacement | exchange of water becomes easy. In addition, since it is not necessary to secure a large volume in advance in consideration of the increase in water, the processing container 12 can be made smaller. According to the experimental results, when the liquid medium cooling means 16 is not provided, if the water in the processing container 12 does not store about 1500 cc to 2000 cc, the water may exceed 90 ° C. if 10 fishes are cooked. is there.

  Here, immediately after the start of heating, since water is stored below the bubble plate 29 and in the gas jetting portion 14 and the outside air jetting portion 26, the exhaust gas sucked by the negative pressure is the gas jetting portion 14 and the bubble plate. The water below the bubble plate 29 is pushed out above the bubble plate 29, and the outside air sucked from the outside air port 27 pushes the water below the bubble blowing plate 26 and the bubble plate 29 above the bubble plate 29. The exhaust gas and the outside air ejected from the bubble ports 30 respectively form a large number of separate bubbles in the water.

  The outside air containing water vapor and the exhaust gas deodorized and deodorized are mixed in the upper space of the processing vessel 12. That is, the exhaust gas is purified at a low temperature and in a saturated state by removing water-soluble odor components and diluted to the outside air (white arrow). Since the partition plate 31 separates the outside air and the exhaust gas, the outside air and the exhaust gas can be stably ejected from the bubble plate 29 into the water without interfering with each other.

  Next, the purified gas flows from the gas discharge unit 15 into the induction pipe 23. At that time, exhaust gas and air bubbles bounce off the surface of the water, and water droplets scatter. However, a cover 24 is provided near the entrance of the gas discharge unit 15, and the bounced water droplets collide with the cover 24 and drop. Therefore, it is possible to prevent water droplets from flowing into the induction tube 23 from the gas discharge unit 15.

  Here, since the gas discharge unit 15 for exhausting the purified gas to the induction pipe 23 is disposed above the surface of the liquid medium, the liquid medium after cooking does not overflow from the gas discharge unit 15. Further, even if the melting heat exchanger 3 is removed for replacement of the liquid medium, the liquid medium does not leak from the melting heat exchanger 3.

  As shown in FIG. 5, the purified gas that has flowed into the induction pipe 23 is mixed and diluted (dried at a low temperature and reduced in odor concentration) with drive air in the chamber 22, and then passed through the second exhaust path 18 and the cooling path inlet 34. Into the cooling passage 33. As described above, the purified gas flowing through the cooling path 33 that is a part of the second exhaust path 18 cools the exhaust gas that flows along the outer wall of the heat radiation path 32 that is a part of the first exhaust path 13, The air is exhausted from the cooling path outlet 35 and then exhausted near the top plate 6 from the exhaust outlet. The purified gas flowing into the second exhaust path 18 from the melting heat exchanger 3 is almost saturated. Since the purified gas flowing through the second exhaust path 18 takes heat from the exhaust gas passing through the first exhaust path 13, the purified gas rises in temperature and lowers the relative humidity. At that time, since the temperature of the purified gas rises and the relative humidity is lowered, even if the temperature of the purified gas exhausted from the exhaust port is lowered by the outside air, the dew point is not reached and no steam is generated from the purified gas. As a result, it is possible to prevent the top plate 6 from being contaminated with water droplets, and it is possible to prevent thermal deterioration of items placed on the top plate 6. In addition, the user of the cooking device 1 has no discomfort due to steam. Moreover, since there is no exhaust port in the upper surface of the top plate 6, the top plate 6 can be easily cleaned, can be provided with the cooking device 1 which is wide, easy to use and excellent in design.

  With the above configuration, when the heating means 10 heats the cooking container 7 in the cooking device 1 according to the present embodiment, the cooking ingredients rise in temperature and exhaust gas containing water vapor, oil, odor components, etc. Occur. Subsequently, the gas transfer means 19 transfers the exhaust gas from the cooking vessel 7 to the melting heat exchanger 3 via the first exhaust path 13. At that time, the exhaust gas cooling means 4 cools the exhaust gas passing through the first exhaust passage 13 through the wall of the first exhaust passage 13, and the exhaust gas whose temperature has decreased flows into the melting heat exchanger 3. The melting heat exchanger 3 can be made of a resin that is lower in price and lighter than metal. In particular, if a transparent resin is used, the contents of the melting heat exchanger 3 can be checked. The exhaust gas is cooled by the liquid medium in direct contact with it, and the exhaust gas whose temperature has been reduced condenses the water vapor and oil contained therein and dissolves in the liquid medium together with water-soluble odor components. That is, since the melting heat exchanger 3 performs exhaust heat treatment such as cooling, dehumidification, smoke removal, and deodorization on the exhaust gas, the exhaust gas becomes a low-temperature purified gas, and the purified gas is transferred by the gas transfer means 19. It is discharged via the second exhaust path 18. However, if the liquid medium is increased by the amount of water vapor or oil condensed, and the oil or odor component is dissolved, the dissolving ability is lowered. Thereafter, oil adheres to the melting heat exchanger 3 and becomes dirty, and further, the liquid medium, fungi and fungi are generated in the melting heat exchanger 3, and odor is generated. And the melting heat exchanger 3 needs to be cleaned.

  During cooking, the liquid medium takes heat, particularly latent heat, from the exhaust gas, so the temperature rises and the liquid medium mainly increases the condensation of water vapor. On the other hand, since the exhaust gas cooling means 4 cools the exhaust gas, the amount of liquid medium stored can be reduced to an amount where there is no possibility of boiling, so that resources can be saved. Therefore, when the liquid medium is replaced and the melting heat exchanger 3 is cleaned, the light melting heat exchanger 3 can be handled.

  Even if energization of the heating means 10 is stopped and cooking of the cooking ingredients is finished, if the drive of the blower 20 is continued, the liquid medium cooling means 16 can continue to cool the water, so that the water may be burned. The temperature can be lowered to a low temperature in a short time, and water can be replaced and the melting heat exchanger 3 can be cleaned in a short time after cooking. In addition, when water is replaced, cooking can be performed again.

  In the first embodiment, water as a liquid medium is used, but water is not necessary as long as it can store heat, and oil or the like may be used.

As described above, the cooking device according to the present invention includes the exhaust gas cooling means for cooling the exhaust gas. During cooking, the liquid medium takes heat from the exhaust gas, and thus the temperature rises. Since the exhaust gas cooling means cools the exhaust gas and the temperature rise of the liquid medium can be suppressed, the predetermined storage amount of the liquid medium can be reduced to an amount where there is no possibility of boiling, and resources can be saved. It can be applied to other cooking devices.

DESCRIPTION OF SYMBOLS 1 Cooking apparatus 3 Dissolving heat exchanger 4 Exhaust gas cooling means 7 Cooking container 10 Heating means 12 Processing container 13 First exhaust path 14 Gas ejection part 15 Gas discharge part 16 Liquid medium cooling means 18 Second exhaust path 19 Gas transfer means 23 Induction tube 25 Fitting portion 26 Outside air ejection portion 27 Outside air port 29 Bubble plate 30 Bubble port 32 Heat radiation path 33 Cooling path 35 Cooling path outlet

Claims (3)

A cooking container provided with a heating means for heating the cooking ingredients;
A melting heat exchanger for storing a liquid medium and cooling the exhaust gas through the liquid medium;
A first exhaust passage connected to the cooking vessel and the melting heat exchanger, for transporting exhaust gas from the cooking vessel to the melting heat exchanger;
A second exhaust path connected to the melting heat exchanger and transporting the exhaust gas treated in the melting heat exchanger downstream of the melting heat exchanger;
Gas transfer means for transferring exhaust gas, and
A cooking device having an exhaust gas cooling means for cooling the first exhaust passage. The cooking apparatus according to claim 1, wherein the exhaust gas cooling means cools at least a part of the first exhaust path with a part of the second exhaust path. The cooking apparatus according to claim 1 or 2, wherein the exhaust gas cooling means is configured such that a part of the first exhaust path and a part of the second exhaust path are installed close to each other.

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