Intelligent shoe box with drying and decomposing filter exhaust gas

Abstract

This invention discloses an intelligent shoebox that dries and decomposes filtered exhaust gas. It is equipped with a drying section and a gas treatment section. During drying, the drying gas is treated in the gas treatment section to remove formaldehyde produced during shoe drying. In this application, a pumping device draws in outside air and pressurizes it. After pressurization, it is controlled by a valve to be transported to a temporary storage chamber, where it is heated to 30-50 degrees Celsius by a heating device. Then, controlled by a valve, it is transported through a pipeline to the placement chamber to dry the shoes inside. During drying, when the gas enters the first exhaust gas treatment device through a purification pipeline, the formaldehyde in the gas is decomposed into carbon dioxide and water under the action of ultraviolet light and titanium dioxide. During the reaction, hydrogen peroxide is added through a reagent adding device to promote the oxidation process of formaldehyde, thereby removing formaldehyde from the gas. The water produced overflows into the first chamber, while any other substances in the gas are adsorbed by activated carbon in the second chamber.

Description

Technical Field

[0001] This invention relates to shoe boxes, and more particularly to intelligent shoe boxes that dry and decompose filtered exhaust gases. Background Technology

[0002] The primary function of shoe cabinets / shoe boxes is to display unused shoes. With societal development, the functions and styles of shoe cabinets have continuously evolved. Traditional shoe cabinets / shoe boxes were mainly used for storing shoes, but as living standards have improved, the materials and functions of shoe cabinets have also continuously evolved. Modern shoe cabinets are no longer limited to wooden materials; they also include electronic shoe cabinets and sterilizing shoe cabinets, adding functions such as drying, deodorizing, and sterilizing.

[0003] For example, patent application number CN202211500023.X discloses a shoe cabinet, which includes a cabinet body, a heat pump system and a detection and control component. The cabinet body has a drying area, the heat pump system is installed in the cabinet body, the heat pump system has an air duct, the air duct has an air outlet, and part of the air outlet faces the drying area.

[0004] The aforementioned patents and existing technologies all dry shoes by setting up an air supply device and blowing hot air into the shoe cabinet. However, when drying shoes, the shoe glue and other materials will decompose into gases such as formaldehyde. Since shoe cabinets are generally located indoors, the formaldehyde gas blown out will cause indoor air pollution and harm to the human body. Summary of the Invention

[0005] In view of the shortcomings of existing technologies that cannot decompose formaldehyde gas generated during shoe drying, the present invention provides an intelligent shoe box that dries, decomposes, and filters waste gas.

[0006] The technical solution adopted by the present invention to solve the above-mentioned technical problems is as follows: an intelligent shoe box having the function of drying, decomposing and filtering exhaust gas, a front box body having multiple rows and columns of placement cavities, a rear box body being provided on the rear side of the front box body, and an exhaust gas treatment device being provided in the rear box body, the exhaust gas treatment device comprising:

[0007] The air pumping device is a booster pump that draws in and pressurizes air, and has an exhaust port with a first control valve at the exhaust port.

[0008] The temporary storage compartment has one end connected to the exhaust port via an air inlet pipe, and the other end is equipped with several exhaust pipes and several second control valves, which are respectively connected to each placement chamber.

[0009] A heating device is installed at the temporary storage chamber and is used to heat the gas inside the temporary storage chamber;

[0010] The purification pipes consist of several pipes, one end of which is connected to each placement chamber to discharge the gas inside the placement chamber.

[0011] The first waste gas treatment device includes a reaction chamber, a reagent adding device and a reagent liquid adding device installed on the reaction chamber. The reaction chamber is equipped with pure water and a purification pipe extends into the pure water in the reaction chamber. The reagent adding device is used to add titanium dioxide to the reaction chamber, and the reagent liquid adding device is used to add hydrogen peroxide to the reaction chamber. The reaction chamber is equipped with an ultraviolet lamp.

[0012] The second waste gas treatment device includes an adsorption box, which has an isolated first chamber and a second chamber. A first connecting pipe is provided from the bottom of the first chamber to the top of the side wall of the reaction chamber, and a second connecting pipe is provided between the top of the first chamber and the bottom of the second chamber. The second chamber is connected to the outside and contains activated carbon.

[0013] The controller is used to control the air pump, valves, ultraviolet lamp, reagent dosing device, and reagent solution dosing device.

[0014] Preferably, the temporary storage chamber is equipped with a pressure relief valve. One end of the pressure relief valve is connected to the second chamber through a pipe. When the gas in the temporary storage chamber is heated to a certain temperature and is not delivered to the placement chamber, it is released from the pressure relief valve into the second chamber to heat and dry the activated carbon.

[0015] Preferably, the second chamber has a drainage pipe on its side wall that connects to the outside. Water generated by the reaction in the reaction chamber overflows into the second chamber and is discharged through the drainage pipe on the second chamber. This design is used to drain the water generated by the reaction.

[0016] Preferably, the first waste gas treatment device and the second waste gas treatment device are provided in one or more sets. When they are set in one set, all purification pipes are connected to the same reaction box. When they are set in multiple sets, each reaction box is connected to the same number of purification pipes.

[0017] Preferably, a floating opening device is provided at the purification pipeline. The floating opening device includes a valve body, a floating valve core, and an elastic element. The valve body has a lower cavity and an upper cavity. The bottom and side of the lower cavity are respectively provided with an air inlet and an air outlet. The floating valve core is vertically slidably disposed in the lower cavity. The elastic element is disposed in the upper cavity, and a piston rod is slidably disposed between the upper cavity and the lower cavity. The elastic element applies a downward elastic force to the valve core through the piston rod, pressing the floating valve core down to close the air inlet.

[0018] Preferably, the reagent addition device includes a temporary storage bottle and a reagent storage bottle located at the reaction chamber. The elastic element is a hollow elastic ball with two reagent channels, one extending into the bottom of the reagent storage bottle and the other into the temporary storage bottle. When pressurized drying gas passes through the lower chamber in the placement chamber, it lifts the floating valve core and squeezes the elastic ball through the piston rod. The reagent in the elastic ball is squeezed into the temporary storage bottle and flows into the reaction chamber. When drying is completed, the pressure in the placement chamber decreases, the floating valve core automatically falls, the elastic ball returns to its original shape, and draws reagent from the reagent storage bottle once. This cycle repeats.

[0019] Preferably, the reagent adding device includes a reagent storage tank and a screw feeder, the screw feeder being controlled by a controller to dispense a quantitative amount of reagent, wherein the reagent is titanium dioxide.

[0020] Preferably, a check valve is installed on the pipeline between the temporary storage compartment and the storage chamber.

[0021] Preferably, the front of the front box is provided with a placement opening, and a sealed door is provided at the placement opening. When the sealed door is closed, it blocks the placement opening. A pressure sensor connected to the controller is provided on the front box. When the sealed door is closed, the pressure sensor feeds back the pressure to the controller. When the pressure value is less than a preset threshold, the controller controls the drying section and the gas treatment section to remain in a non-working state.

[0022] Preferably, a placement partition is horizontally provided in the middle of the placement chamber. Several grooves are provided on the placement partition and the bottom of the placement chamber, and an air passage is provided on the front side of the placement partition. The drying gas enters from the rear side below the placement partition, passes through the front side, flows through the air passage through the front side above the placement partition, and then exits from the rear side above the placement partition. Two infrared sensors connected to the controller are provided on the side wall of the placement chamber to provide feedback signals to the controller after the shoes are placed in, so as to control the operation of the drying section and the gas treatment section. A temperature and humidity sensor connected to the controller is provided at the top rear side of the side wall of the placement chamber to detect the temperature and humidity of the drying gas.

[0023] Compared with the prior art, the advantages of the present invention are as follows: In this application, the air pumping device draws in outside air and pressurizes it. After pressurization, it is controlled by a valve to be transported to the temporary storage chamber and heated to 30-50 degrees Celsius by a heating device in the temporary storage chamber. Then, it is controlled by a valve to be transported through a pipeline to the placement chamber to dry the shoes in the placement chamber. When the gas enters the first waste gas treatment device through the purification pipeline during drying, the formaldehyde in the gas is decomposed into carbon dioxide and water under the action of ultraviolet lamp and titanium dioxide. During the reaction, hydrogen peroxide is added through a reagent adding device to promote the oxidation process of formaldehyde, thereby removing the formaldehyde from the gas. The water produced by the removal overflows into the first chamber, while if the gas contains other substances, they are adsorbed by activated carbon in the second chamber. Attached Figure Description

[0024] The present invention will be further described in detail below with reference to the accompanying drawings and preferred embodiments. However, those skilled in the art will understand that these drawings are drawn only for the purpose of explaining the preferred embodiments and therefore should not be construed as limiting the scope of the invention. Furthermore, unless specifically indicated, the drawings are only schematic representations of the composition or structure of the described objects and may contain exaggerated depictions, and the drawings are not necessarily drawn to scale.

[0025] Figure 1 This is the front view of this application;

[0026] Figure 2 This is a perspective view of the present application;

[0027] Figure 3 This is a perspective view of the present application (with the rear box removed);

[0028] Figure 4 This is a 3D view of the waste gas treatment section;

[0029] Figure 5 This is a cross-sectional view of the waste gas treatment section;

[0030] Figure 6 This is a perspective view of the present application (with the airtight door removed);

[0031] In the diagram: 101, front box; 1011, placement chamber; 1012, placement partition; 1013, airtight door; 102, rear box; 30, air pumping device; 40, temporary storage compartment; 50, exhaust pipe; 501, check valve; 60, first waste gas treatment device; 601, purification pipe; 602, floating opening device; 6020, valve body; 6021, upper chamber; 6022, lower chamber; 6023, piston rod; 6024 6025. Floating valve core; 6026. Elastic ball; 6027. Ultraviolet lamp; 608. Reaction chamber; 609. Reagent solution adding device; 6000. Reagent adding device; 601. Reagent solution storage bottle; 6020. First connecting pipe; 6021. Second connecting pipe; 7022. Second waste gas treatment device; 703. Adsorption box; 704. First chamber; 705. Second chamber; 706. Spare reagent adding bottle; 707. Activated carbon adding bottle. Detailed Implementation

[0032] Preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings. Those skilled in the art will appreciate that these descriptions are merely descriptive and exemplary and should not be construed as limiting the scope of the invention. Example

[0033] Smart shoeboxes that dry and decompose filtered exhaust gases, such as Figure 1-6As shown, a rear box is provided on the rear side of the front box 101, and an exhaust gas treatment device is provided inside the rear box. The exhaust gas treatment device includes:

[0034] The air pumping device 30 is used to draw in and pressurize air, and has an exhaust port with a first control valve at the exhaust port.

[0035] The temporary storage compartment 40 has one end connected to the exhaust port via an air inlet pipe, and the other end is equipped with several exhaust pipes 50 and several second control valves, which are respectively connected to each placement chamber 1011;

[0036] A heating device is installed in the temporary storage chamber 40 and is used to heat the gas inside the temporary storage chamber 40. Specifically, the heating device is installed inside or at the bottom of the temporary storage chamber 40 and can be a quartz tube heater or an electric heating wire. During heating, the temperature of the gas inside the temporary storage chamber 40 needs to be controlled. Temperature detection is achieved by installing a thermocouple inside the temporary storage chamber 40, and the temperature value is fed back to the controller to control the start and stop of the heating device, thereby ensuring that the temperature of the drying gas is within the range of 30-50 degrees. When the temperature is within the range of 30-50 degrees, the pressure is less than the pressure at which the pressure relief valve is opened, and the drying temperature of the activated carbon rises to 60-90 degrees.

[0037] Purification pipe 601 is provided with several pipes, one end of which is connected to each placement chamber 1011 to discharge the gas in the placement chamber 1011. The second control valve controls the gas in the temporary storage chamber 40 to flow to the individual placement chamber 1011. Both the first control valve and the second control valve are high-pressure resistant electric control valves.

[0038] The first waste gas treatment device 60 includes a reaction chamber 603, a reagent adding device 605 and a reagent liquid adding device 604 disposed on the reaction chamber 603. The reaction chamber 603 contains purified water and a purification pipe 601 extends into the purified water in the reaction chamber 603. The reagent adding device 605 is used to add titanium dioxide to the reaction chamber 603, and the reagent liquid adding device 604 is used to add hydrogen peroxide to the reaction chamber 603. The reaction chamber 603 is equipped with an ultraviolet lamp 6026. It should be noted that the top of the first chamber 7011 is equipped with a spare reagent adding bottle 702 connected to the first chamber 7011 for adding corresponding reagents to react with the gases to be removed when other gases need to be removed. The top of the second chamber 7012 is equipped with an activated carbon adding bottle 703.

[0039] The second waste gas treatment device 70 includes an adsorption box 701. The adsorption box 701 has an isolated first cavity 7011 and a second cavity 7012. A first connecting pipe 607 is provided from the bottom of the first cavity 7011 to the top of the side wall of the reaction box 603. A second connecting pipe 608 is provided from the top of the first cavity 7011 to the bottom of the second cavity 7012. The second cavity 7012 is connected to the outside and has activated carbon inside.

[0040] The controller is used to control the air pump, valves, ultraviolet lamp, reagent dosing device 605 and reagent liquid dosing device 604. In this scheme, the air pumping device 30 intermittently provides gas to the temporary storage chamber 40. The air pumping device 30 can adjust the pressure as needed. The air pumping device 30 draws in outside air and pressurizes it. After pressurization, it is transported to the temporary storage chamber 40 through a valve and heated to 30-50 degrees Celsius by a heating device. Then, it is transported to the placement chamber 1011 through a pipeline through a valve to dry the shoes in the placement chamber 1011. When the gas enters the first waste gas treatment device 60 through the purification pipeline 601 during drying, the formaldehyde in the gas is decomposed into carbon dioxide and water under the action of ultraviolet lamp and titanium dioxide. During the reaction, hydrogen peroxide is added through the reagent adding device 604 to promote the oxidation process of formaldehyde, thereby removing the formaldehyde from the gas. The water produced by the removal overflows into the first chamber 7011. If the gas contains other substances, they are adsorbed by activated carbon in the second chamber 7012.

[0041] Preferably, the temporary storage chamber 40 is equipped with a pressure relief valve. One end of the pressure relief valve is connected to the second chamber 7012 via a pipe. When the gas in the temporary storage chamber 40 is heated to a certain temperature and is not delivered to the placement chamber 1011, the pressure is released through the pressure relief valve into the second chamber 7012 to heat and dry the activated carbon. This solution can increase the service life of the activated carbon. Specifically, the activated carbon can be periodically heated to remove internal moisture and other residual gases according to the drying time. In addition, it can also protect the temporary storage chamber 40 from excessive pressure and potential danger. The pressure relief valve is not shown in the figure.

[0042] Preferably, the side wall of the second cavity 7012 is provided with a drainage pipe that communicates with the outside. Water generated by the reaction in the reaction chamber 603 overflows into the second cavity 7012 and is discharged through the drainage pipe on the second cavity 7012.

[0043] Preferably, the first waste gas treatment device 60 and the second waste gas treatment device 70 are provided in one or more sets. When set as one set, all purification pipes 601 are connected to the same reaction chamber 603. When set as multiple sets, each reaction chamber 603 is connected to the same number of purification pipes 601. In actual application, the number of placement chambers 1011 is set according to the number of chambers. If the number is small, one set is sufficient. If the number is large, multiple reaction chambers 603 can be set to improve efficiency. At most, one purification pipe 601 can correspond to one reaction chamber 603.

[0044] Preferably, a floating opening device 602 is provided at the purification pipe 601. The floating opening device 602 includes a valve body 6020, a floating valve core 6024, and an elastic element. The valve body 6020 has a lower cavity 6022 and an upper cavity 6021. The bottom and side of the lower cavity 6022 are respectively provided with an air inlet and an air outlet, and the floating valve core 6024 is vertically slidably disposed in the lower cavity 6022. The elastic element is disposed in the upper cavity 6021, and a piston rod 6023 is slidably disposed between the upper cavity 6021 and the lower cavity 6022. The elastic element applies a downward elastic force to the floating valve core 6024 through the piston rod 6023, pressing the floating valve core 6024 down to close the air inlet. The floating opening device 602 is used to prevent the overflow of harmful gases automatically generated by the shoes in the placement cavity 1011 when the gas treatment section is not working. Preferably, the reagent adding device 604 includes a temporary storage bottle and a reagent storage bottle 606 located at the reaction chamber 603. The elastic element is a hollow elastic ball 6025, which has two reagent pipes. One pipe extends into the bottom of the reagent storage bottle 606, and the other extends into the temporary storage bottle. When the pressurized drying gas in the placement chamber 1011 passes through the lower chamber 6022, it lifts the piston rod 6024 and squeezes the elastic ball 6025 through the piston rod 6023. The reagent in the elastic ball 6025 is squeezed into the temporary storage bottle and flows into the reaction chamber 603. When the drying is completed, the pressure in the placement chamber 1011 decreases, the piston rod 6024 automatically falls, the elastic ball 6025 returns to its original shape, and draws reagent from the reagent storage bottle 606 once. This cycle continues. This solution combines the floating opening device 602 with the hydrogen peroxide adding device, so that hydrogen peroxide is added once when the drying gas lifts the piston rod 6024. Since the drying gas is provided by the temporary storage chamber 40, hydrogen peroxide is added only once when the temporary storage chamber 40 supplies gas. If drying is performed multiple times, hydrogen peroxide is added multiple times, thereby controlling the amount of hydrogen peroxide added. It should be noted that the height of the reagent storage bottle 606 needs to be set higher than the height of the temporary storage bottle to ensure that the reagent can be smoothly squeezed out of the temporary storage bottle. In addition, the elastic ball 6025 is made of an antioxidant material.

[0045] Preferably, the reagent adding device 605 includes a reagent storage tank and a screw feeder disposed within the storage tank. The screw feeder is controlled by a controller to quantitatively add the reagent, wherein the reagent is titanium dioxide. This method quantitatively adds titanium dioxide into the reaction tank 603.

[0046] Preferably, a check valve 501 is provided on the pipe between the temporary storage compartment 40 and the storage chamber. The check valve 501 is closed by a spring providing pressure to the valve core.

[0047] Preferably, the front box 101 has a placement opening on the front side, and a sealing door 1013 is provided at the placement opening. When the sealing door 1013 is closed, it blocks the placement opening, and the front box 101 is provided with a pressure sensor connected to the controller. When the sealing door 1013 is closed, the pressure sensor feeds back the pressure to the controller. When the pressure value is less than a preset threshold, the controller controls the drying section and the gas treatment section to remain in a non-working state.

[0048] Preferably, a placement partition 1012 is horizontally provided in the middle of the placement chamber 1011. Several grooves are provided on the placement partition 1012 and the bottom of the placement chamber 1011, and an air passage is provided on the front side of the placement partition 1012. The drying gas enters from the rear side below the placement partition 1012, passes through the front side, flows through the air passage through the front side above the placement partition 1012, and then exits from the rear side above the placement partition 1012. Two infrared sensors connected to the controller are provided on the side wall of the placement chamber 1011 to provide feedback signals to the controller after the shoes are placed in, so as to control the operation of the drying section and the gas treatment section. A temperature and humidity sensor connected to the controller is provided at the top rear side of the side wall of the placement chamber 1011 to detect the temperature and humidity of the drying gas.

[0049] The above describes the intelligent shoebox with drying, decomposition, and filtration functions for waste gas provided by this invention. Specific examples have been used to illustrate the principles and implementation methods of this invention. The descriptions of the embodiments above are merely for the purpose of helping to understand this invention and its core ideas. It should be noted that those skilled in the art can make various improvements and modifications to this invention without departing from its principles, and these improvements and modifications also fall within the protection scope of the claims of this invention.

Claims

1. A smart shoebox that dries and decomposes filtered exhaust gas, characterized in that, A front box with multiple rows and columns of placement cavities, a rear box with an exhaust gas treatment device inside, the exhaust gas treatment device including: An air pumping device is used to draw in and pressurize air. It has an exhaust port and a first control valve at the exhaust port. A placement partition is horizontally arranged in the middle of the placement chamber. Several grooves are provided on the placement partition and the bottom of the placement chamber. An air passage hole is provided on the front side of the placement partition. Drying gas enters from the rear side below the placement partition, passes through the front side, flows through the air passage hole, passes through the front side above the placement partition, and then exits from the rear side above the placement partition. The temporary storage compartment has one end connected to the exhaust port via an air inlet pipe, and the other end is equipped with several exhaust pipes and several second control valves, which are respectively connected to each placement chamber. A heating device is installed at the temporary storage chamber and is used to heat the gas inside the temporary storage chamber; The purification pipeline has several sections, one end of which is connected to each placement chamber to discharge the gas in the placement chamber. The purification pipeline is equipped with a floating opening device, which includes a valve body, a floating valve core and an elastic element. The valve body has a lower chamber and an upper chamber. The bottom and side of the lower chamber are respectively provided with an air inlet and an air outlet. The floating valve core is vertically slidably installed in the lower chamber. The elastic element is installed in the upper chamber and a piston rod is slidably installed between the upper chamber and the lower chamber. The elastic element applies a downward elastic force to the valve core through the piston rod, pressing the floating valve core down and closing the air inlet. The first waste gas treatment device includes a reaction chamber, a reagent adding device and a reagent liquid adding device installed on the reaction chamber. The reaction chamber contains purified water, and a purification pipe extends into the purified water inside the reaction chamber. The reagent adding device is used to add titanium dioxide to the reaction chamber, and the reagent liquid adding device is used to add hydrogen peroxide to the reaction chamber. The reaction chamber is equipped with an ultraviolet lamp. The reagent liquid adding device includes a temporary storage bottle and a reagent liquid storage bottle installed at the reaction chamber. The elastic element is a hollow elastic ball with two reagent liquid pipes. One pipe extends into the bottom of the reagent liquid storage bottle, and the other extends into the temporary storage bottle. When pressurized drying gas in the placement chamber passes through the lower chamber, it lifts the floating valve core and squeezes the elastic ball through the piston rod. The reagent liquid in the elastic ball is squeezed into the temporary storage bottle and flows into the reaction chamber. When drying is completed, the pressure in the placement chamber decreases, the floating valve core automatically falls, the elastic ball returns to its original shape, and draws reagent liquid from the reagent liquid storage bottle once. This cycle continues. The second waste gas treatment device includes an adsorption chamber having isolated first and second chambers. A first connecting pipe is provided from the bottom of the first chamber to the top of the side wall of the reaction chamber, and the top of the first chamber is connected to the bottom of the second chamber. It is equipped with a second connecting pipe, and the second cavity is connected to the outside and contains activated carbon. The controller is used to control the air pump, valves, ultraviolet lamp, reagent dosing device, and reagent solution dosing device. Add a device.

2. The intelligent shoebox with drying and decomposing filtered exhaust gas according to claim 1, characterized in that, The temporary storage chamber is equipped with a pressure relief valve. One end of the pressure relief valve is connected to the second chamber through a pipe. When the gas in the temporary storage chamber is heated to a certain temperature and is not delivered to the placement chamber, it is released from the pressure relief valve into the second chamber to heat and dry the activated carbon.

3. The intelligent shoebox with drying and decomposing filtered exhaust gas according to claim 1, characterized in that, The second chamber has a drainage pipe on its side wall that connects to the outside. Water produced by the reaction in the reaction chamber overflows into the second chamber and is discharged from the drainage pipe on the second chamber.

4. The intelligent shoebox with drying and decomposing filtered exhaust gas according to claim 1, characterized in that, The first waste gas treatment device and the second waste gas treatment device are provided in one or more sets. When they are set as one set, all purification pipes are connected to the same reaction box. When they are set as multiple sets, each reaction box is connected to the same number of purification pipes.

5. The intelligent shoebox with drying and decomposing filtered exhaust gas according to claim 1, characterized in that, The reagent addition device includes a reagent storage tank and a screw feeder. The screw feeder controls the quantitative feeding through a controller, and the reagent is titanium dioxide.

6. The intelligent shoebox with drying and decomposing filtered exhaust gas according to claim 1, characterized in that, A check valve is installed on the pipeline between the temporary storage bin and the storage chamber.

7. The intelligent shoebox with drying and decomposing filtered exhaust gas according to claim 1, characterized in that, The front of the front box has a placement opening, and a sealed door is provided at the placement opening. When the sealed door is closed, it blocks the placement opening. The front box is equipped with a pressure sensor connected to the controller. When the sealed door is closed, the pressure sensor feeds back the pressure to the controller. When the pressure value is less than the preset threshold, the controller controls the drying section and the gas treatment section to remain in a non-working state.

8. The intelligent shoebox with drying and decomposing filtered exhaust gas according to claim 7, characterized in that, The side wall of the placement chamber is equipped with two infrared sensors connected to the controller to send signals to the controller after the shoes are placed in, thereby controlling the operation of the drying section and the gas treatment section; a temperature and humidity sensor connected to the controller is located at the top rear side wall of the placement chamber to detect the temperature and humidity of the drying gas.

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