Temperature control mechanism of steaming box

Abstract

The utility model discloses a kind of steam oven temperature control mechanisms, including steam control valve, steam control valve includes valve body shell, valve core is arranged in valve body shell, the outside of valve body shell is sequentially provided with first valve port pipeline, second valve port pipeline and third valve port pipeline;Valve core is provided with air inlet gap, first exhaust hole and second exhaust hole;Air inlet gap covers first valve port pipeline with valve core rotation always, first exhaust hole and second valve port pipeline are adapted, second exhaust hole and third valve port pipeline are adapted, second valve port pipeline and third valve port pipeline with valve core rotation respectively in the relative state of opening and closure;Frying pan upper is provided with smoke extractor, smoke extractor is connected with first heat exchanger, first heat exchanger is connected with compressor, compressor connects first valve port pipeline, second valve port pipeline is connected with steam oven;Steam oven is provided with pressure relief valve, pressure relief valve and third valve port pipeline are jointly connected with second heat exchanger, second heat exchanger connects compressor.

Description

Technical Field

[0001] This utility model relates to the field of kitchen equipment technology, specifically to a temperature control mechanism for a steam oven. Background Technology

[0002] Deep-frying and steaming are common cooking methods in food processing. Deep-frying produces a large amount of high-temperature exhaust gas. If this exhaust gas is directly released into the air, it will not only pollute the air but also waste the heat contained in the exhaust gas.

[0003] In the prior art, utility model patent CN202222598289.4 discloses a fully automatic temperature-controlled steam oven that can recycle waste heat from flue gas, relating to the field of home and living technology. It includes a main body structure with a baking mechanism at its bottom and a temperature control mechanism connected internally. This fully automatic temperature-controlled steam oven, which recycles waste heat from flue gas, uses the principle of upward heat movement to conduct heat from the flue gas generated by charcoal fire to a rock wool board. The rock wool board effectively absorbs the heat due to its heat absorption effect and insulation properties. The heat is then transferred to the support frame via a heat-conducting plate, thus recycling the flue gas and achieving temperature control and insulation. This makes it more convenient for users. The flue gas flow channels carved inside the connecting plate and heat conduction plate further enhance the absorption of heat from the flue gas by the rock wool board, further improving usability.

[0004] The fully automatic temperature-controlled steam oven provided by the aforementioned patent is equipped with a rock wool board temperature control mechanism inside, which can absorb the emitted heat and thus realize the recovery and utilization of flue gas. However, the heat absorption capacity of the rock wool board in this device is limited. When the emitted flue gas passes through the temperature control mechanism, only a portion of the heat is absorbed and utilized, and the remaining heat is still dissipated into the air, resulting in low heat utilization rate in the flue gas, which needs further improvement. Utility Model Content

[0005] The purpose of this utility model is to provide a temperature control mechanism for a steam oven, which aims to improve the existing steam oven device by setting a temperature control mechanism with rock wool board inside to realize the recovery and utilization of flue gas. However, the heat absorption capacity of the rock wool board is limited. When the emitted flue gas passes through the temperature control mechanism, only a part of the heat is absorbed and utilized, and the remaining heat is still dissipated into the air, resulting in the problem of low heat utilization rate in the flue gas.

[0006] This utility model is implemented as follows: A steam oven temperature control mechanism includes an oil fume extraction device, a first heat exchanger, and a steam control valve. The steam control valve includes a valve body shell, within which a valve core is rotatably mounted, and can only rotate a certain angle. A first valve port pipe, a second valve port pipe, and a third valve port pipe are sequentially arranged along the circumference of the outer side of the valve body shell. The valve core is respectively provided with an air inlet notch, a first exhaust port, and a second exhaust port. The air inlet notch always covers the first valve port pipe as the valve core rotates. The first exhaust port and the second valve core... The second exhaust port and the third valve port are compatible with each other, and the second valve port and the third valve port are in the open and closed relative states respectively as the valve core rotates; an oil fume extraction device is provided above the fryer, and the exhaust port of the oil fume extraction device is connected to a first heat exchanger, the first heat exchanger is connected to a compressor, the compressor is connected to the first valve port pipe, and the second valve port pipe is connected to a steam box; a pressure relief valve is provided on the steam box, and the exhaust port of the pressure relief valve and the third valve port pipe are connected to a second heat exchanger, which is connected to the compressor.

[0007] Preferably, the steam oven includes a box body and an inner liner. Multiple mounting columns are distributed on the inner wall of the box body, and the inner liner is installed inside the box body through the mounting columns. A pressure gauge is provided on the side of the box body, and a pressure relief valve and a steam charging port are respectively provided on the back of the box body. A third gas pipe is provided on the outlet of the pressure relief valve, and the third gas pipe is connected to the inlet of the second heat exchanger. The steam charging port is connected to the second valve port pipe.

[0008] Preferably, it also includes a three-way connector, one end of which is connected to a third gas pipe, and the other end is connected to a fourth gas pipe, the fourth gas pipe being connected to the air inlet of the second heat exchanger, and the last end being connected to a third valve port pipe; the third gas pipe is provided with a one-way valve with its opening facing the second heat exchanger.

[0009] Preferably, the fume extraction device includes an exhaust pump, a fume extraction port is provided at the lower end of the fume extraction device, an exhaust port is provided on the side, an exhaust pump is provided on the exhaust port, an exhaust outlet is provided on the exhaust pump, a fume pipe is provided on the exhaust outlet, and the fume pipe is connected to the air inlet of the first heat exchanger.

[0010] Preferably, the fryer includes a mounting rack, the upper end of the fryer is provided with the mounting rack, and the fume extraction device is installed on the upper end of the mounting rack, with the fume extraction port aligned with the fryer.

[0011] Preferably, it also includes a first air pipe and a second air pipe, with one end of the first air pipe installed on the air outlet of the first heat exchanger and the other end installed on the air inlet of the compressor; one end of the second air pipe is installed on the air outlet of the second heat exchanger and the other end is connected to the pipe body of the first air pipe.

[0012] Preferably, the upper side of the valve core is symmetrically provided with limiting blocks, and the upper end of the valve body shell is symmetrically provided with limiting grooves of a certain angle range along its circumference, and the limiting blocks are rotatably disposed in the limiting grooves.

[0013] Preferably, the steam control valve further includes a sealing cover, on the outer side of which a plurality of connecting bolts are arranged sequentially along its circumference, and the sealing cover is installed on the upper end of the valve body shell by the connecting bolts; a rotating handle is rotatably mounted on the sealing cover, and a hexagonal rotating head is provided at the lower end of the rotating handle; a hexagonal rotating hole adapted to the hexagonal rotating head is provided at the upper end of the valve core, and the hexagonal rotating head is inserted into the hexagonal rotating hole.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows: This utility model utilizes the fume extraction device to process the fumes through a first heat exchanger and a compressor, and controls the rate at which steam enters the steam chamber through a steam control valve. Then, the steam discharged from the steam chamber after depressurization and the steam discharged when the steam flow rate is controlled by the steam control valve are processed and utilized through a second heat exchanger and a compressor, thus fully utilizing the heat in the flue gas and making full use of the steam generated after the heat treatment of the flue gas, effectively improving the utilization rate of the heat in the flue gas. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the connection structure of the various devices of this utility model;

[0016] Figure 2 This is a side sectional view of the deep fryer and fume extraction device of this utility model;

[0017] Figure 3 This is a top view cross-sectional structural diagram of the steam control valve of this utility model;

[0018] Figure 4 This is a schematic diagram of the internal structure of the valve body shell of this utility model;

[0019] Figure 5 This is a three-dimensional structural diagram of the valve core of this utility model;

[0020] Figure 6 This is a schematic diagram of the structure of the sealing cap of this utility model;

[0021] Figure 7 This is a three-dimensional structural diagram of the steamer of this utility model in the open state;

[0022] Figure 8 This is a three-dimensional structural diagram of the box body of this utility model in the open state.

[0023] In the diagram: 1. Deep fryer; 101. Mounting bracket; 2. Fume extraction device; 201. Fume extraction outlet; 202. Fume outlet; 203. Exhaust pump; 204. Exhaust outlet; 3. Fume pipe; 4. First heat exchanger; 5. First gas pipe; 6. Compressor; 7. Steam control valve; 701. Valve body shell; 702. First valve port pipe; 703. Second valve port pipe; 704. Third valve port pipe; 705. Valve core; 706. Limiting groove; 707. Air inlet notch; 708 709. First exhaust port; 710. Second exhaust port; 711. Limiting block; 712. Hexagonal rotating hole; 713. Sealing cover; 714. Connecting bolt; 715. Rotating handle; 716. Hexagonal rotating head; 8. Steamer; 801. Box body; 802. Pressure gauge; 803. Inner liner; 804. Mounting column; 805. Pressure relief valve; 806. Steam charging port; 9. Second heat exchanger; 10. Second gas pipe; 11. T-connector; 12. Third gas pipe; 13. Fourth gas pipe. Detailed Implementation

[0024] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0025] The following description, in conjunction with the accompanying drawings and specific embodiments, provides further details:

[0026] Example 1

[0027] like Figure 1 and Figures 3-6As shown, a steam oven temperature control mechanism is used in a steam oven 8, including a steam control valve 7. The steam control valve 7 includes a valve body shell 701, in which a valve core 705 is rotatably disposed and can only rotate a certain angle. Limiting blocks 710 are symmetrically disposed on the upper side of the valve core 705. A limiting groove 706 with a certain angle range is symmetrically opened on the upper end of the valve body shell 701 along its circumference. The limiting blocks 710 are rotatably disposed in the limiting groove 706. The outer side of the valve body shell 701 is provided with a first valve port pipe 702, a second valve port pipe 703, and a third valve port pipe 704 arranged sequentially along its circumference. The first valve port pipe 702, the second valve port pipe 703, and the third valve port pipe 704 are arranged at 120° intervals. The limiting block 710 can rotate 120° through the limiting groove 706. The valve core is provided with an air inlet notch 707, a first exhaust hole 708, and a second exhaust hole 709. The valve core is divided into three equal areas. One area has an air inlet notch 707, one area has the first exhaust hole 708 in one half and the other half is solid, and the last area has the second exhaust hole 709 in one half and the other half is solid. The air inlet notch 707 always covers the first valve port pipe 702 as the valve core 705 rotates, so that the first valve port pipe 702 is always unobstructed. The first vent 708 is adapted to the second valve port pipe 703, and the second vent 709 is adapted to the third valve port pipe 704. The second valve port pipe 703 and the third valve port pipe 704 are in opposite open and closed states, respectively, as the valve core 705 rotates. As the valve core 705 rotates, the first vent 708 and the second valve port pipe 703 gradually close, thereby reducing the flow rate of the second valve port pipe 703. Simultaneously, the second vent 709 and the third valve port pipe 704 gradually overlap, causing the flow rate of the third valve port pipe 704 to gradually increase. Reverse rotation has the opposite effect on the second valve port pipe 703 and the third valve port pipe 704. This allows for either reducing the flow rate of the second valve port pipe 703 and transferring excess heat to the third valve port pipe 704, or increasing the flow rate of the second valve port pipe 703 and decreasing the flow rate of the third valve port pipe 704. The steam control valve 7 may also include a sealing cover 712. Multiple connecting bolts 713 are sequentially arranged along the circumference of the outer side of the sealing cover 712. The sealing cover 712 is mounted on the upper end of the valve body shell 701 via the connecting bolts 713. A rotating handle 714 is rotatably mounted on the sealing cover 712. A hexagonal rotating head 715 is provided at the lower end of the rotating handle 714. A hexagonal rotating hole 711, which is adapted to the hexagonal rotating head 715, is provided at the upper end of the valve core 705. The hexagonal rotating head 715 is inserted into the hexagonal rotating hole 711. A sealing ring is provided between the sealing cover 712 and the valve body shell 701 to seal the connection. Simultaneously, rotating the rotating handle 714 can drive the valve core 705 to rotate.

[0028] like Figure 1 and Figure 2As shown, a fume extraction device 2 is installed above the fryer 1. The fryer 1 includes a mounting bracket 101, with the mounting bracket 101 at its upper end. The fume extraction device 2 is mounted on the upper end of the mounting bracket 101. The fume extraction device 2 includes an exhaust pump 203, a fume extraction port 201 at its lower end, and a smoke exhaust port 202 on its side. The exhaust pump 203 is mounted on the smoke exhaust port 202, and an exhaust outlet 204 is mounted on the exhaust pump 203. A fume extraction pipe 3 is mounted on the exhaust outlet 204, and the fume extraction pipe 3 is connected to the air inlet of the first heat exchanger 4. The fume extraction port 201 is aligned with the fryer 1. The smoke exhaust port of the fume extraction device 2 is connected to the first heat exchanger 4, which is connected to a compressor 6. The compressor 6 is connected to a first valve port pipe 702, and a second valve port pipe 703 is connected to a steamer 8. By conveying the fumes from the fume extraction device 2 to the first heat exchanger 4, the water inside the first heat exchanger 4 can be heated to generate steam. The steam is then sent to the compressor 6 for processing before being delivered to the steam chamber 8 for heating. The steam chamber 8 is equipped with a pressure relief valve 805 to prevent excessive steam from entering the steam chamber, which could damage it or cause overheating. The outlet of the pressure relief valve 805 and the third valve port pipe 704 are connected to the second heat exchanger 9, which is connected to the compressor 6. Additionally, a first air pipe 5 and a second air pipe 10 are included. One end of the first air pipe 5 is installed at the outlet of the first heat exchanger 4, and the other end is installed at the inlet of the compressor 6. One end of the second air pipe 10 is installed at the outlet of the second heat exchanger 9, and the other end is connected to the pipe body of the first air pipe 5. By connecting the steam discharged from the pressure relief valve 805 to the second heat exchanger 9, the discharged steam can be processed and reused again. At the same time, when adjusting the flow rate of the second valve port pipe 703 in the steam control valve 7, the excess steam discharged from the third valve port pipe 704 can also be processed through the second heat exchanger 9 and then sent to the compressor 6 for further processing and reuse, thereby reducing heat loss.

[0029] like Figure 1 , Figure 7 and Figure 8As shown, the steam oven 8 includes a body 801 and an inner liner 803. Multiple mounting posts 804 are distributed along the inner wall of the body 801. The inner liner 803 is installed inside the body 801 via the mounting posts 804. The inner liner 803 is suspended within the body 801 via the mounting posts 804, creating a gap between the inner liner 803 and the body 801 for filling with steam to heat the inner liner 803. A pressure gauge 802 is installed on the side of the body 801 to monitor the internal pressure of the steam oven 8 and prevent damage from excessive steam filling. A pressure relief valve 805 and a steam charging port 806 are respectively installed on the back of the body 801. A third air pipe 12 is installed on the outlet of the pressure relief valve 805, connecting to the inlet of the second heat exchanger 9. The steam charging port 806 connects to the second valve port pipe 703. Additionally, a three-way connector 11 is included. One end of the three-way connector 11 is connected to a third air pipe 12, and the other end is connected to a fourth air pipe 13. The fourth air pipe 13 is connected to the air inlet of the second heat exchanger 9, and the last end is connected to a third valve port pipe 704. A one-way valve with its opening facing the second heat exchanger 9 is installed inside the third air pipe 12. By installing a one-way valve in the third air pipe 12, water vapor discharged from the third valve port pipe 704 can be prevented from entering the steam chamber 8 through the third air pipe 12. The steam pressure inside the steam chamber 8 can be controlled by adjusting the threshold of the pressure relief valve 805 and the flow rate of the second valve port pipe 703. By adjusting the flow rate of the second valve port pipe 703, the filling rate of water vapor can be controlled, avoiding excessively fast filling rate that would cause the pressure relief valve 805 to work at high intensity. The water vapor pressure inside the steam chamber can be controlled by adjusting the pressure relief valve 805.

[0030] Example 2

[0031] like Figure 1 and Figures 3-6As shown, a steam oven temperature control mechanism is used in a steam oven 8, including a steam control valve 7. The steam control valve 7 includes a valve body shell 701, in which a valve core 705 is rotatably disposed and can only rotate a certain angle. Limiting blocks 710 are symmetrically disposed on the upper side of the valve core 705. A limiting groove 706 with a certain angle range is symmetrically opened on the upper end of the valve body shell 701 along its circumference. The limiting blocks 710 are rotatably disposed in the limiting groove 706. The outer side of the valve body shell 701 is provided with a first valve port pipe 702, a second valve port pipe 703 and a third valve port pipe 704 in sequence along its circumference; the valve core is provided with an air inlet notch 707, a first exhaust hole 708 and a second exhaust hole 709 respectively; the air inlet notch 707 always covers the first valve port pipe 702 as the valve core 705 rotates, the first exhaust hole 708 is adapted to the second valve port pipe 703, the second exhaust hole 709 is adapted to the third valve port pipe 704, and the second valve port pipe 703 and the third valve port pipe 704 are in the relative open and closed states respectively as the valve core 705 rotates. The steam control valve 7 also includes a sealing cover 712. Multiple connecting bolts 713 are arranged sequentially along the circumference of the outer side of the sealing cover 712. The sealing cover 712 is installed on the upper end of the valve body shell 701 through the connecting bolts 713. A rotating handle 714 is rotatably mounted on the sealing cover 712. A hexagonal rotating head 715 is provided at the lower end of the rotating handle 714. A hexagonal rotating hole 711 adapted to the hexagonal rotating head 715 is provided at the upper end of the valve core 705. The hexagonal rotating head 715 is inserted into the hexagonal rotating hole 711.

[0032] like Figure 1 and Figure 2 As shown, a fume extraction device 2 is installed above the fryer 1. The fryer 1 includes a mounting bracket 101, with the mounting bracket 101 at its upper end. The fume extraction device 2 is mounted on the upper end of the mounting bracket 101. The fume extraction device 2 includes an exhaust pump 203, a fume extraction port 201 at its lower end, and an exhaust port 202 on its side. The exhaust pump 203 is mounted on the exhaust port 202, and an exhaust outlet 204 is mounted on the exhaust pump 203. A fume extraction pipe 3 is mounted on the exhaust outlet 204, and the fume extraction pipe 3 is connected to the air inlet of the first heat exchanger 4. The fume extraction port 201 is aligned with the fryer 1. The exhaust port of the fume extraction device 2 is connected to a first heat exchanger 4, which is connected to a compressor 6. The compressor 6 is connected to a first valve port pipe 702, and a second valve port pipe 703 is connected to a steam chamber 8. A pressure relief valve 805 is installed on the steam chamber 8. The outlet of the pressure relief valve 805 and a third valve port pipe 704 are connected to a second heat exchanger 9, which is connected to the compressor 6. The device also includes a first air pipe 5 and a second air pipe 10. One end of the first air pipe 5 is installed at the outlet of the first heat exchanger 4, and the other end is installed at the inlet of the compressor 6. One end of the second air pipe 10 is installed at the outlet of the second heat exchanger 9, and the other end is connected to the pipe body of the first air pipe 5.

[0033] like Figure 1 , Figure 7 and Figure 8 As shown, the steam oven 8 includes a body 801 and an inner liner 803. Multiple mounting posts 804 are distributed along the inner wall of the body 801, and the inner liner 803 is installed inside the body 801 via the mounting posts 804. A pressure gauge 802 is installed on the side of the body 801, and a pressure relief valve 805 and a steam charging port 806 are respectively installed on the back of the body 801. A third gas pipe 12 is installed on the outlet of the pressure relief valve 805, and the third gas pipe 12 is connected to the inlet of the second heat exchanger 9. The steam charging port 806 is connected to the second valve port pipe 703. It also includes a three-way connector 11, one end of which is connected to the third gas pipe 12, one end of which is connected to a fourth gas pipe 13, which is connected to the inlet of the second heat exchanger 9, and the last end of which is connected to the third valve port pipe 704. A one-way valve with its opening facing the second heat exchanger 9 is installed inside the third gas pipe 12.

[0034] The working principle of this utility model is as follows: The fume extraction device 2 transports the fumes generated by the fryer 1 to the first heat exchanger 4, heating the water inside the first heat exchanger 4. The steam generated by the first heat exchanger 4 enters the compressor 6, and after processing, it is transported to the space between the housing 801 and the inner liner 803 of the steam chamber 8 to heat the inner liner 803. The steam pressure between the housing 801 and the inner liner 803 can be observed by the pressure gauge 802. At the same time, when the internal pressure is too high, the pressure relief valve 805 can be used to release the pressure. When the pressure relief valve 805 releases pressure at a high frequency, the flow rate of the second valve port pipe 703 can be reduced by adjusting the rotating handle 714 in the steam control valve 7; and the excess steam is discharged through the third valve port pipe 704. The steam discharged through the third valve port pipe 704 and the steam discharged through the pressure relief valve 805 are then transported to the second heat exchanger 9 through the fourth gas pipe 13 to heat the water in the second heat exchanger 9, and the steam is transported to the compressor 6 for processing and utilization; thereby improving the heat utilization rate and reducing heat loss.

[0035] In summary, this utility model utilizes the fume extraction device 2 to process the fumes through the first heat exchanger 4 and the compressor 6, and controls the rate at which steam enters the steam chamber through the steam control valve 7. Then, the steam discharged from the steam chamber after depressurization and the steam discharged when the steam control valve 7 controls the steam flow rate are processed and utilized through the second heat exchanger 9 and the compressor 6, thus fully utilizing the heat in the flue gas and making full use of the steam generated after the flue gas heat treatment, effectively improving the utilization rate of flue gas heat.

[0036] The above are merely preferred embodiments of this utility model and are not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A temperature control mechanism for a steam oven (8), characterized in that, The device includes a fume extraction device (2), a first heat exchanger (4), and a steam control valve (7). The steam control valve (7) includes a valve body shell (701), in which a valve core (705) is rotatably disposed. A first valve port pipe (702), a second valve port pipe (703), and a third valve port pipe (704) are sequentially arranged along the circumference of the outer side of the valve body shell (701). An air inlet notch (707), a first exhaust hole (708), and a second exhaust hole (709) are respectively provided on the valve core (705). The air inlet notch (707) always covers the first valve port pipe (702) as the valve core (705) rotates. The first exhaust hole (708) and the second valve port pipe (703) are adapted to each other. The second exhaust port (709) and the third valve port pipe (704) are adapted to each other. The second valve port pipe (703) and the third valve port pipe (704) are in the opposite state of opening and closing respectively as the valve core (705) rotates. The exhaust port of the fume extraction device (2) is connected to the first heat exchanger (4). The first heat exchanger (4) is connected to the compressor (6). The compressor (6) is connected to the first valve port pipe (702). The second valve port pipe (703) is connected to the steam box (8). The steam box (8) is provided with a pressure relief valve (805). The outlet of the pressure relief valve (805) and the third valve port pipe (704) are connected to the second heat exchanger (9). The second heat exchanger (9) is connected to the compressor (6).

2. The temperature control mechanism for a steam oven according to claim 1, characterized in that, The steam oven (8) includes a box body (801) and an inner liner (803). Multiple mounting columns (804) are distributed on the inner wall of the box body (801). The inner liner (803) is installed inside the box body (801) through the mounting columns (804). A pressure gauge (802) is provided on the side of the box body (801). A pressure relief valve (805) and a steam charging port (806) are respectively provided on the back of the box body (801). A third gas pipe (12) is provided on the outlet of the pressure relief valve (805). The third gas pipe (12) is connected to the inlet of the second heat exchanger (9). The steam charging port (806) is connected to the second valve port pipe (703).

3. The temperature control mechanism for a steam oven according to claim 2, characterized in that, It also includes a three-way connector (11), one end of which is connected to a third gas pipe (12), and the other end is connected to a fourth gas pipe (13). The fourth gas pipe (13) is connected to the air inlet of the second heat exchanger (9), and the last end is connected to a third valve port pipe (704). The third gas pipe (12) is provided with a one-way valve with its opening facing the second heat exchanger (9).

4. The temperature control mechanism for a steam oven according to claim 1, characterized in that, The fume extraction device (2) includes an exhaust pump (203). The lower end of the fume extraction device (2) is provided with a fume extraction port (201) and the side is provided with a smoke exhaust port (202). The exhaust port (202) is provided with an exhaust pump (203). The exhaust pump (203) is provided with an exhaust outlet (204). The exhaust outlet (204) is provided with a fume pipe (3). The fume pipe (3) is connected to the air inlet of the first heat exchanger (4).

5. The temperature control mechanism for a steam oven according to claim 4, characterized in that, The deep fryer (1) includes a mounting bracket (101), the upper end of the deep fryer (1) is provided with the mounting bracket (101), the fume extraction device (2) is installed on the upper end of the mounting bracket (101), and the fume extraction port (201) is aligned with the deep fryer (1).

6. The temperature control mechanism for a steam oven according to claim 1, characterized in that, It also includes a first air pipe (5) and a second air pipe (10). One end of the first air pipe (5) is installed on the outlet of the first heat exchanger (4), and the other end is installed on the inlet of the compressor (6). One end of the second air pipe (10) is installed on the outlet of the second heat exchanger (9), and the other end is connected to the pipe body of the first air pipe (5).

7. The temperature control mechanism for a steam oven according to claim 1, characterized in that, The upper side of the valve core (705) is symmetrically provided with a limiting block (710), and the upper end of the valve body shell (701) is symmetrically provided with a limiting groove (706) with a certain angle range along its circumference. The limiting block (710) is rotatably disposed in the limiting groove (706).

8. The temperature control mechanism for a steam oven according to claim 1, characterized in that, The steam control valve (7) also includes a sealing cover (712). Multiple connecting bolts (713) are arranged sequentially on the outer side of the sealing cover (712) along its circumference. The sealing cover (712) is installed on the upper end of the valve body shell (701) by the connecting bolts (713). A rotating handle (714) is rotatably installed on the sealing cover (712). A hexagonal rotating head (715) is provided at the lower end of the rotating handle (714). A hexagonal rotating hole (711) is provided at the upper end of the valve core (705) and is adapted to the hexagonal rotating head (715). The hexagonal rotating head (715) is inserted into the hexagonal rotating hole (711).

Images