Pot convenient to cool

Abstract

The utility model relates to the technical field of food processing, in particular to a pot convenient to cool, which comprises a pot body, the pot body is provided with an interlayer, heat conduction oil is contained in the interlayer, the interlayer is communicated with an oil inlet and an oil outlet, the oil inlet is used for injecting the heat conduction oil, the oil outlet is used for discharging the heat conduction oil, and a circulating pump is connected between the oil inlet and the oil outlet. The oil discharge outlet is communicated with the feeding end of the circulating pump through a pipeline, and a cooler is installed on the pipeline between the oil discharge outlet and the feeding end. The scheme is used for solving the problems that at present, the cooling rate of heated materials in a pot is low, and manpower cost is caused by transferring when the materials are cooled in a transferring mode.

Description

Technical Field

[0001] This utility model relates to the field of food processing technology, specifically to a pot that is convenient for cooling. Background Technology

[0002] In food processing, multiple ingredients are often heated, sometimes requiring stirring. After processing, for products intended for packaging or sale, or when the temperature needs to be lowered to a desired level during storage or use, the ingredients are often removed from the pot and placed in another container for storage until the temperature drops to the required level. This method of transferring substances from the pot for cooling is more common in jacketed heating pots, such as the raw material mixing and melting equipment for butter and shortening production (patent publication number CN208809987U) and (patent publication number CN102949086). In the rotating jacketed large soup pot of type B, the addition of heat-conducting oil to the jacket ensures uniform heating of the pot body, which helps to heat the materials evenly. However, because the heat inside the jacket is difficult to reduce, pouring out the raw materials helps to increase the cooling rate. Conventional technologies without jackets still have a dedicated discharge nozzle and discharge shaft for pouring out materials, such as the high-temperature aroma extraction device and its application in the preparation of natural aroma raw material flavoring oil in patent publication number CN118454568B, and a steam heating pot in patent publication number CN203341509U.

[0003] It is evident that after the pot for heating the raw materials is heated, the natural cooling method has a low cooling rate due to the high temperature of the pot itself. However, transferring the heated raw materials to other containers for cooling involves the labor costs associated with material transfer. Utility Model Content

[0004] The present invention aims to provide a pot that facilitates cooling, in order to solve the problem that the current method of cooling heated materials in the pot has a low cooling rate and that cooling by transferring materials incurs labor costs.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A pot for convenient cooling includes a pot body with a jacket containing heat transfer oil. The jacket is connected to an oil inlet and an oil outlet. The oil inlet is used to inject heat transfer oil, and the oil outlet is used to discharge heat transfer oil. A circulation pump is connected between the oil inlet and the oil outlet. The oil outlet is connected to the feed end of the circulation pump through a pipe. A cooler is installed on the pipe between the oil outlet and the feed end.

[0007] The principle and advantages of this solution are as follows: When the pot is heated, the heat transfer oil itself has a heat-conducting function, thus ensuring a consistent temperature on the inner wall of the pot and uniform heating of the materials inside. When the heating is complete and the temperature needs to be reduced to the set temperature, the circulation pump is activated, allowing the hot heat transfer oil to enter the cooler for cooling. The cooled heat transfer oil is then pumped back into the jacket through the inlet by the circulation pump. This continuous circulation facilitates heat exchange, enabling rapid cooling of the pot without transferring the materials. Compared to existing technologies, this solution does not rely on natural cooling, thus significantly increasing the cooling rate. Because the jacket serves both as a heat conductor and a heat exchanger during circulating cooling, there is no need to transfer the materials inside the pot, saving labor costs associated with material transfer while maintaining a high cooling rate.

[0008] Preferably, as an improvement, the cooler includes a cooling box containing cooling liquid, and a pipe connecting the oil drain port and the feed end of the circulating pump passes through the cooling liquid. The cooler structure of this solution is simple.

[0009] Preferably, as an improvement, the cooling box is equipped with a spiral pipe, one end of which is connected to the oil drain port, and the other end of which is connected to the feed end of the circulation pump. This design allows the heat transfer oil to play a heat-conducting role when the raw materials are stirred in the heated state of the pot, ensuring a uniform temperature of the inner wall of the pot. When the stirring is completed and the materials in the pot need to be cooled, the circulation pump is started, so that the heat transfer oil continuously circulates and flows through the spiral pipe where the cooling liquid is located. The spiral pipe greatly extends the time that the heat transfer oil is surrounded by the cooling liquid, thereby continuously exchanging the heat in the raw materials and realizing rapid cooling of the raw materials in the pot.

[0010] Preferably, as an improvement, the pot body is equipped with a temperature sensor, and both the temperature sensor and the circulation pump are connected to the controller. The controller is used to start the circulation pump after receiving a cooling command, and to control the circulation pump to stop starting after the temperature sensor senses that the temperature has reached the set temperature, so as to improve the degree of automation.

[0011] Preferably, as an improvement, it also includes an alarm connected to the controller, which is used to issue an audible alarm when the temperature inside the pot reaches the set temperature after cooling, so as to further improve the level of automation.

[0012] Preferably, as an improvement, the bottom of the pot body is provided with a discharge port for discharging the material inside the pot. In this solution, during the stirring process, other parts such as plugs, baffles, or a discharge valve are installed on the discharge port to seal it, so as to prevent the raw materials from being discharged directly. After the stirring is completed, the discharge port is opened to facilitate the timely, quick, and simple discharge of the stirred raw materials.

[0013] Preferably, as an improvement, the top of the pot is open and also includes a stirrer. The stirrer includes a drive motor, a stirring shaft, and stirring blades. The drive motor is used to drive the stirring shaft to rotate. The stirring blades are fixed on the stirring shaft and penetrate into the pot to stir the material, so that the material in the pot is stirred evenly. At the same time, it also helps to increase the cooling rate through stirring during the cooling process.

[0014] Preferably, as an improvement, the stirring shaft includes a first section and a second section. The first section is fixedly connected to the output end of the drive motor, and the stirring blades are mounted on the second section. The first section and the second section are sleeved together, and the second section can move axially relative to the first section. It also includes a locking element for locking the relative position of the first section and the second section. In this solution, when it is necessary to adjust the height of the stirring blades according to different stirring tasks, the locking element can be released from locking the first section and the second section first. After the relative position of the first section and the second section is adjusted, the length of the stirring shaft can be adjusted, which means that the height of the stirring blades in the pot can be changed, thereby adapting to the stirring requirements of different height requirements.

[0015] Preferably, as an improvement, it also includes a guide post for fixing inside the pot body. One of the second section and the guide post has a protrusion and the other has a groove. The protrusion can be inserted into the groove. There is a gap between the protrusion and the groove. This solution facilitates the adjustment of the stirring shaft length, and the bottom of the cantilever of the stirring shaft extending into the pot body is always guided by the guide post to ensure the stability of the stirring shaft rotation process.

[0016] Preferably, as an improvement, one of the first and second segments has a sleeve segment and the other has a shaft segment. The shaft segment is sleeved with the sleeve, and the locking element is a locking pin. The locking pin is threaded onto the sleeve and inserted into the sleeve to abut against the shaft segment. This solution achieves the length adjustment of the stirring shaft with a simple structure.

[0017] Preferably, as an improvement, the shaft segment is provided with at least one abutting surface, and the locking pin is used to abut against the abutting surface so that the locking pin has a sufficiently large abutting force on the shaft segment, ensuring that the length of the stirring shaft will not easily change during use.

[0018] Preferably, as an improvement, the first and second sections are connected by threads, and the locking element is a lock nut. The lock nut is threaded onto the stirring shaft and is used to lock the threaded connection position of the first and second sections. This solution provides another simple structure with an adjustable stirring shaft length.

[0019] Preferably, as an improvement, the stirring blades include upper and lower stirring blades located at different heights, with the distance between the upper stirring blade and the inner wall of the pot being greater than the distance between the lower stirring blade and the inner wall of the pot. The arrangement of upper and lower stirring blades at different heights in this solution results in higher stirring efficiency and more uniform stirring during the stirring process.

[0020] Preferably, as an improvement, it also includes a combustion heater located at the bottom of the pot body, a guide body surrounding the bottom of the pot body, a combustion chamber formed between the guide body and the bottom of the pot body, the combustion chamber enclosing the jacket, an installation cavity connected in the middle of the combustion chamber, and the combustion heater installed in the installation cavity; this solution enables the heat generated by the combustion heater to quickly heat up the heat transfer oil in the jacket. Attached Figure Description

[0021] Figure 1 This is a front sectional view (with partial section) of Embodiment 1 of this utility model.

[0022] Figure 2 This is a front sectional view (with partial section) of Embodiment 2 of this utility model.

[0023] Figure 3 This is a three-dimensional schematic diagram of Embodiment 2 of the present invention (the circulating pump and the cooler are not shown).

[0024] Figure 4 This is a three-dimensional structural diagram of the stirrer in Embodiment 2 of this utility model.

[0025] Figure 5 for Figure 4 The diagram shows the three-dimensional structure of the drive motor and the first section of the stirring shaft without displaying the image.

[0026] Figure 6 for Figure 4 The first and second segments are changed to three-dimensional structural diagrams using regular hexagonal fits.

[0027] Figure 7 for Figure 4 A partial axial section diagram.

[0028] Figure 8 This is a partial three-dimensional structural diagram of the first and second sections of the stirring shaft of Embodiment 2 of this utility model, showing how their lengths can be adjusted by a threaded connection.

[0029] Figure 9 for Figure 8 A schematic diagram of the axial section.

[0030] Figure 10 This second embodiment of the present invention is a cross-sectional view showing the bottom of the first section guided by guide posts installed at the bottom of the container (wherein...). Figure 2 , Figure 9 The guide posts are also marked in the text.

[0031] Figure 11 This is a front sectional view (with partial section) of Embodiment 2 of this utility model. Detailed Implementation

[0032] The following detailed description of the specific embodiments further illustrates the following: The reference numerals in the accompanying drawings include: pot body 10, jacket 101, oil inlet 102, U-shaped bend 1021, blower 1022, oil outlet 103, temperature sensor 104, plug 105, guide column 106, pot lid 20, feeding port 201, sliding door 202, stirrer 30, stirring shaft 1, first section 11, second section 12, contact surface 121, groove 122, locking element 13, stirring blade 2, drive motor 3, upper stirring blade 21, lower stirring blade 22, combustion heater 40, circulation pump 50, cooler 60, cooling box 61, spiral pipe 62, guide body 70, combustion chamber 701, exhaust pipe 204, and fuel injector 203.

[0033] Example 1

[0034] Combination Figure 1 A pot for convenient cooling includes a pot body 10 and a combustion heater 40 for heating the pot body 10. The inner wall of the pot body 10 has a circular cross-section, and the jacket 101 is a cavity. The cavity of the jacket 101 is used to contain heat transfer oil. The top of the cavity is connected to an oil inlet 102 and an oil outlet 103, which are located on both sides of the pot body 10. The oil inlet 102 is used to inject heat transfer oil, and the oil outlet 103 is used to discharge heat transfer oil. A circulation pump 50 is connected between the oil inlet 102 and the oil outlet 103. The oil outlet 103 is connected to the feed end of the circulation pump 50 through a pipe. A cooler 60 is installed on the pipe between the oil outlet 103 and the feed end.

[0035] Specifically, the cooler 60 includes a cooling box 61 containing cooling liquid. A spiral pipe 62 is installed inside the cooling box 61. One end of the spiral pipe 62 is connected to the oil drain port 103, and the other end is connected to the feed end of the circulation pump 50. This allows the heat-conducting oil to conduct heat during the stirring of the raw materials inside the pot 10 while it is heated, ensuring a uniform temperature on the inner wall of the pot 10. When the stirring is complete and the material inside the pot 10 needs to be cooled, the circulation pump 50 is activated, causing the heat-conducting oil to continuously circulate and flow through the spiral pipe 62 containing the cooling liquid. The spiral pipe 62 significantly extends the time the heat-conducting oil spends within the cooling liquid, thereby continuously removing heat from the raw materials and achieving rapid cooling of the raw materials inside the pot 10.

[0036] In actual use, when the pot body 10 is heated, the heat transfer oil in the jacket 101 will be vaporized. In order to avoid excessive pressure in the jacket, a U-shaped bend (i.e., the U-shaped bend 1021 in the figure, i.e. the heat transfer oil pipeline in the disclosed technology) as shown in patent publication number CN102949086B can be connected to the oil inlet 102 or the oil outlet 103. The top of the U-shaped bend is higher than the jacket 101, and a blower 1022 is connected to the other end of the U-shaped bend 1021. The blower 1022 is used to send the vaporized heat transfer oil into the combustion heater 40 for combustion.

[0037] A temperature sensor 104 is installed inside the pot body 10 to detect the temperature of the raw materials inside the pot. The temperature sensor 104 and the circulating pump 50 are both connected to a controller. The controller starts the circulating pump 50 upon receiving a cooling command and stops the circulating pump 50 once the temperature sensor 104 detects that the set temperature has been reached. An alarm connected to the controller is also included, which sounds an alarm when the temperature inside the pot body 10 reaches the set temperature after cooling, thereby improving the level of automation.

[0038] The bottom of the pot body 10 is provided with a discharge port for discharging materials inside the pot body 10. In this embodiment, during the stirring process, other parts such as a plug 105, a baffle, or a discharge valve are installed on the discharge port to seal it, preventing the raw materials from being discharged directly. After stirring is completed, the discharge port is opened to facilitate the timely, quick, and simple discharge of the stirred raw materials. This embodiment uses the plug 105 as an example.

[0039] The combustion heater 40 is located below the pot body 10 and also includes a guide body 70 to prevent rapid heat loss. The pot body 10 has an arc-shaped structure. The guide body 70 surrounds the pot body 10 from the bottom. A combustion chamber 701 is formed between the guide body 70 and the bottom of the pot body 10. The combustion chamber 701 surrounds the jacket 101. An installation cavity is connected in the middle of the combustion chamber 701. The combustion heater 40 is installed in the installation cavity. The flame and heat generated by the combustion heater 40 are directed toward the combustion chamber 701 so that the heat generated by the combustion heater 40 can quickly heat up the heat transfer oil in the jacket 101.

[0040] Example 2

[0041] Combination Figures 3 to 10 This second embodiment is an improvement on the first embodiment, specifically as follows: it also includes a pot lid 20 and a stirrer 30.

[0042] The lid 20 is detachably connected to the pot body 10. The top of the pot body 10 is open, and the lid 20 has a dome-shaped structure. The lid 20 covers the top opening of the pot body 10. The lid 20 has a feeding port 201, which is a large opening on the side of the curved lid 20. A curved sliding door 202 is installed on the large opening. The sliding door 202 is slidably connected to the lid 20. When the sliding door 202 slides, it rotates around the center of the lid 20, so that the feeding port 201 is fully exposed after the sliding door 202 slides, which is convenient for adding materials. The sliding door 202, together with the curved lid 20, allows the feeding port 201 to be set to a larger size, which is convenient for adding materials into the pot body 10. At the same time, it is convenient to close the feeding port 201 after adding materials, which helps to increase the temperature inside the pot body 10. The sliding door 202 can be transparent, making it easy to see the cooking process through the sliding door 202; while the main body of the lid 20 is made of a high-temperature resistant metal material, such as stainless steel, to ensure that the lid 20 has sufficient strength.

[0043] The agitator 30 includes a drive motor 3, a stirring shaft 1, and stirring blades 2. The drive motor 3 is used to drive the stirring shaft 1 to rotate. The drive motor 3 is fixed on the top of the pot cover 20. The stirring blades 2 are fixed on the stirring shaft 1. The stirring blades 2 penetrate into the pot body 10 to stir the material, so that the material in the pot body 10 is stirred evenly. At the same time, it also helps to increase the cooling rate by stirring during the cooling process.

[0044] The length of the stirring shaft 1 can be adjusted.

[0045] Specifically, the stirring shaft 1 includes a first section 11 and a second section 12. The first section 11 is fixedly connected to the output end of the drive motor 3. The drive motor 3 is fixedly installed on the stirring device and is used to drive the stirring shaft 1 to rotate.

[0046] The stirring blade 2 is fixed on the second section 12 away from the drive motor 3. The first section 11 is sleeved with the second section 12, and the second section 12 can move axially relative to the first section 11. It also includes a locking member 13 for locking the relative position of the first section 11 and the second section 12.

[0047] Combination Figures 4 to 7 In one embodiment, the adjustable length of the stirring shaft 1 is specifically achieved as follows: the first section 11 facing the second section 12 is machined into a sleeve, the top of the second section 12 is machined into a shaft section, the shaft section is sleeved with the sleeve, and a locking member 13, which is a locking pin, is threaded onto the sleeve. The locking pin is inserted into the sleeve and abuts against the shaft section of the second section 12. To improve the locking force of the locking pin on the shaft section, at least one abutment surface 121 is provided on the shaft section. The shaft section can be... Figure 5 The cylindrical shaft shown has an axial abutment groove, which can also be... Figure 6The shaft segment is a polygonal structure (a regular hexagonal structure in the figure), and the sleeve and the polygonal cross section of the shaft segment are fitted together. When adjusting the length of the stirring shaft 1, the locking pin is turned to release the locking pin from the second segment 12. Then, the second segment 12 is controlled to slide axially relative to the first segment 11, thereby adjusting the overall length of the stirring shaft 1. After the length adjustment is completed, the locking pin is turned again to make the locking pin press against the inner wall of the sleeve of the second segment 12 and the first segment 11, thereby ensuring that the length of the stirring shaft 1 will not change easily.

[0048] Combination Figure 8 and Figure 9 In another embodiment, the length of the stirring shaft 1 is adjustable as follows: the first section 11 and the second section 12 are connected by threads. The sleeve of the first section 11 is provided with internal threads, and the shaft section of the second section 12 is provided with external threads. The locking member 13 is a locking nut, which is threaded onto the external threads. After the relative positions of the first section 11 and the second section 12 are adjusted, the length of the first section 11 and the second section 12 is locked by the locking nut pressing against the bottom end face of the first section 11. When adjusting the length, the locking nut is first screwed away from the first section 11, and then the second section 12 is screwed to change the axial position of the second section 12 relative to the first section 11. After the adjustment is completed, the locking nut is screwed again until it abuts against the bottom end face of the first section 11, thereby completing the locking of the length of the stirring shaft 1.

[0049] The stirring blade 2 includes an upper stirring blade 21 and a lower stirring blade 22 located at different heights. The distance between the upper stirring blade 21 and the inner wall of the pot body 10 is greater than the distance between the lower stirring blade 22 and the inner wall of the pot body 10. In a specific embodiment, the distance between the lower stirring blade 22 and the inner wall of the pot body 10 can be set to be no less than 1 mm. The distance between the upper stirring blade 21 and the inner wall of the pot body 10 is no less than 5 mm.

[0050] There are multiple lower stirring blades 22, which are evenly distributed around the stirring shaft 1. Each lower stirring blade 22 is arc-shaped, and the arc shape of the lower stirring blade 22 makes the distance between the lower stirring blade 22 and the inner wall of the pot body 10 gradually change, reducing the difficulty of stirring when the lower stirring blade 22 is used.

[0051] There are multiple upper stirring blades 21, and these blades are evenly distributed around the stirring shaft 1. The upper stirring blades 21 are inclined plates.

[0052] Combination Figure 2 and Figure 10In one embodiment, a guide post 106 is fixedly installed at the bottom of the pot body 10. The guide post 106 is coaxial with the stirring shaft 1 and is cylindrical. The cylindrical guide post 106 is equivalent to forming a circular protrusion. A groove 122 is machined at the bottom of the second section 12. The protrusion is inserted into the groove 122. There is a gap between the protrusion and the groove 122 so that even if the length of the stirring shaft 1 is adjusted, the bottom of the stirring shaft 1 is still limited by the guide post 106, ensuring that both ends are limited when the stirring shaft 1 rotates, thus ensuring the rotational stability of the stirring shaft 1.

[0053] In this embodiment, the adjustable length of the stirring shaft 1 is used to adapt to the stirring requirements of different stirring tasks, and the upper stirring blade 21 and the lower stirring blade 22 are set to make the stirring efficiency high and the stirring more uniform.

[0054] Example 3

[0055] Combination Figure 11 Example 3 is an improvement on Example 2. Specifically, multiple oil spray nozzles 203 are installed on the pot lid 20. The multiple oil spray nozzles 203 are evenly distributed around the stirring shaft 1. Each oil spray nozzle 203 sprays oil into the pot body 10 so that the oil can be more evenly distributed in the raw materials when stir-frying.

[0056] In addition, a smoke exhaust pipe 204 is connected to the pot lid 20 in this embodiment. The smoke exhaust pipe 204 is used to connect to the fume extraction equipment so that if there is oil smoke during the stirring process, it can be directly and quickly discharged through the smoke exhaust pipe 204. Compared with the range hood installed indoors, this solution directly connects the smoke exhaust pipe 204 to the pot lid 20, which can quickly and accurately extract oil smoke, thereby reducing the energy consumption of the range hood.

[0057] In addition, to ensure that the fume extraction equipment works more energy-efficiently and environmentally friendly, a fume sensor (not shown in the figure) can be installed in the flue. The fume sensor and the fume extraction equipment are both connected to the controller. The controller is used to start the fume extraction equipment after the fume concentration collected by the fume sensor reaches the set value. This way, the fume extraction equipment does not need to be continuously started when cooking, but only needs to be started when there is fume and the set concentration is reached. This avoids the useless energy consumption of the fume extraction equipment and helps to save energy and protect the environment.

[0058] The controller also allows for different levels of fume concentration settings for starting the fume extraction equipment. Different levels of fume concentration correspond to different extraction speeds when the fume extraction equipment starts. The higher the fume concentration in the exhaust pipe 204, the faster the extraction speed. This further improves the intelligent control of fume extraction, taking into account energy conservation and environmental protection, while ensuring that the extraction speed is automatically adjusted in a timely and rapid manner when the fume concentration is high, so that the fume can be discharged quickly and in a timely manner regardless of its size.

[0059] The above descriptions are merely embodiments of this utility model. Commonly known technical solutions and / or characteristics are not described in detail here. It should be noted that those skilled in the art can make various modifications and improvements without departing from the technical solution of this utility model. These modifications and improvements should also be considered within the scope of protection of this utility model, and will not affect the effectiveness of the implementation of this utility model or the practicality of the patent. The scope of protection claimed in this application should be determined by the content of its claims, and the specific embodiments described in the specification can be used to interpret the content of the claims.

Claims

1. A pot for convenient cooling, comprising a pot body, the pot body having a jacket containing heat-conducting oil, characterized in that: The jacket has an oil inlet and an oil outlet. The oil inlet is used to inject heat transfer oil, and the oil outlet is used to discharge heat transfer oil. A circulation pump is connected between the oil inlet and the oil outlet. The oil outlet is connected to the feed end of the circulation pump through a pipeline. A cooler is installed on the pipeline between the oil outlet and the feed end.

2. The pot for convenient cooling according to claim 1, characterized in that: The cooler includes a cooling box containing cooling liquid, and a pipe connecting the oil outlet and the feed end of the circulating pump passes through the cooling liquid.

3. The pot for convenient cooling according to claim 2, characterized in that: The cooling box is equipped with a spiral pipe, one end of which is connected to the oil drain port, and the other end of which is connected to the feed end of the circulating pump.

4. The pot for convenient cooling according to claim 1, characterized in that: The pot is equipped with a temperature sensor. The temperature sensor and the circulation pump are both connected to the controller. The controller is used to start the circulation pump after receiving a cooling command, and to control the circulation pump to stop starting after the temperature sensor detects that the temperature has reached the set temperature.

5. A pot for convenient cooling according to claim 4, characterized in that: It also includes an alarm that connects to the controller, which sounds an alarm when the temperature inside the pot reaches the set temperature after cooling.

6. A pot for convenient cooling according to any one of claims 1-5, characterized in that: The bottom of the pot is provided with a discharge port, which is used to discharge the material inside the pot.

7. A pot for convenient cooling according to any one of claims 1-5, characterized in that: The pot body has an open top and also includes a stirrer. The stirrer includes a drive motor, a stirring shaft, and stirring blades. The drive motor is used to drive the stirring shaft to rotate. The stirring blades are fixed on the stirring shaft and extend into the pot body to stir the materials.

8. A pot for convenient cooling according to claim 7, characterized in that: The stirring shaft includes a first section and a second section. The first section is fixedly connected to the output end of the drive motor. The stirring blades are mounted on the second section. The first section and the second section are sleeved together, and the second section can move axially relative to the first section. It also includes a locking element for locking the relative position of the first section and the second section.

9. A pot for convenient cooling according to claim 7, characterized in that: The stirring blades include upper stirring blades and lower stirring blades located at different heights, and the distance between the upper stirring blades and the inner wall of the pot is greater than the distance between the lower stirring blades and the inner wall of the pot.

10. A pot for convenient cooling according to any one of claims 1-5 and 8-9, characterized in that: It also includes a combustion heater located at the bottom of the pot body, a guide body that surrounds the bottom of the pot body, a combustion chamber formed between the guide body and the bottom of the pot body, the combustion chamber enclosing the interlayer, and an installation cavity connected to the middle of the combustion chamber, in which the combustion heater is installed.

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