Constant temperature control device and control method for agricultural biological agent fermentation

Abstract

The invention discloses a constant-temperature control device and a constant-temperature control method for agricultural biological agent fermentation, and relates to the technical field of biological agent fermentation. The device comprises a fermentation assembly, the fermentation assembly comprises a base, a box is fixedly connected to the top of the base, and a cover plate is mounted at the top of the box; the top of the cover plate is fixedly matched with a constant-temperature assembly, the constant-temperature assembly comprises a cylindrical pipe fixedly connected to the top of the cover plate, the constant-temperature assembly further comprises a heat conduction rod fixedly connected to the cover plate in a penetrating mode, and the top of the heat conduction rod is sleeved with an air bag located in the cylindrical pipe; the inner wall of the cylindrical pipe is in sliding fit with a piston plate abutting against the air bag. Through cooperative use of the constant-temperature assembly and the fermentation assembly, in the fermentation process of a biological agent in the box body, the constant-temperature assembly realizes automatic adjustment of the temperature in the box body through linkage of a heat conduction rod and an air bag, so that the biological agent is always kept in a constant-temperature state, and thus it is ensured that the biological agent is in an optimal fermentation state.

Description

Technical Field

[0001] The present invention belongs to the technical field of biological agent fermentation, and particularly relates to a constant temperature control device and a control method for agricultural biological agent fermentation. Background Art

[0002] Microbial fermentation refers to the process of using microorganisms to convert raw materials into products required by humans through specific metabolic pathways under suitable conditions. The production level of microbial fermentation mainly depends on the genetic characteristics of the strain itself and the culture conditions. There are also more and more related products of microbial fermentation, and the application scope in agricultural production is also constantly expanding. A constant temperature control device is required for the production of agricultural biological agents.

[0003] Currently, during the fermentation process of biological agents, the fermentation tank is heated to make the temperature inside the fermentation tank reach the temperature required for the fermentation of biological agents, thereby improving the fermentation effect of biological agents. However, heat is generated during the fermentation process of biological agents, causing the temperature inside the fermentation tank to rise, and then reducing the fermentation effect of biological agents. The existing fermentation tank cannot automatically adjust the temperature according to the temperature required for the fermentation of biological agents, thus affecting the fermentation effect of biological agents. For this reason, we provide a constant temperature control device and a control method for agricultural biological agent fermentation to solve the above problems. Summary of the Invention

[0004] The purpose of the present invention is to provide a constant temperature control device and a control method for agricultural biological agent fermentation. Through the combined use of a constant temperature component and a fermentation component, during the fermentation process of biological agents inside the box body, the constant temperature component realizes the automatic adjustment of the temperature inside the box body through the linkage of a heat conduction rod and an airbag, enabling the biological agents to always maintain a constant temperature state, thereby ensuring that the biological agents are in the best fermentation state, and solving the problem that during the existing fermentation process of biological agents, the fermentation tank is heated to make the temperature inside the fermentation tank reach the temperature required for the fermentation of biological agents, thereby improving the fermentation effect of biological agents. However, heat is generated during the fermentation process of biological agents, causing the temperature inside the fermentation tank to rise, and then reducing the fermentation effect of biological agents. The existing fermentation tank cannot automatically adjust the temperature according to the temperature required for the fermentation of biological agents, thus affecting the fermentation effect of biological agents.

[0005] To solve the above technical problems, the present invention is realized through the following technical solutions: The present invention is a constant temperature control device for the fermentation of agricultural biological agents, including a fermentation component; the fermentation component includes a base, a box body is fixedly connected to the top of the base, and a cover plate is installed on the top of the box body; a constant temperature component is fixedly fitted to the top of the cover plate, the constant temperature component includes a cylindrical tube fixedly connected to the top of the cover plate, the constant temperature component further includes a heat conduction rod fixedly connected through the cover plate, and an air bag located inside the cylindrical tube is sleeved on the top of the heat conduction rod; a piston plate in contact with the air bag is slidably fitted to the inner wall of the cylindrical tube, a moving rod penetrating to the outside of the cylindrical tube is fixedly connected to the top of the piston plate, and a toothed plate is fixedly connected to the top end of the moving rod; the constant temperature component further includes a mounting plate fixedly connected to the outer wall of the box body, a storage battery is fixedly connected to the top of the mounting plate, and a sliding rheostat electrically connected to the storage battery is fixedly connected to the top of the mounting plate; the constant temperature component further includes a fixing plate fixedly connected to the top of the cover plate, a lead screw is rotatably connected through one side surface of the fixing plate, a gear meshing with the toothed plate is fixedly connected to one end of the lead screw, a moving plate is threadedly connected to the circumferential side of the lead screw, an extension plate is fixedly connected to the bottom of the moving plate, and the extension plate is fixedly connected to the sliding piece of the sliding rheostat.

[0006] Furthermore, the fermentation component further includes a water tank fixedly connected to the top of the base, a conductive rod is fixedly connected through the outer top of the water tank, a heating wire is fixedly connected to the bottom end of the conductive rod, and the conductive rod is electrically connected to the sliding rheostat.

[0007] Furthermore, a spiral tube is embedded in the box body, a pump body is installed in the water tank, a water inlet pipe is connected to the output end of the pump body and one end of the spiral tube, a recovery pipe is connected to the input end of the pump body and the other end of the spiral tube, a feeding pipe is connected to the outer wall of the box body, and a discharging pipe is connected to the outer wall of the box body.

[0008] Furthermore, the constant temperature component further includes a guide rod fixedly connected to one side surface of the fixing plate, the guide rod is slidably fitted through the moving rod, and a limiting plate is fixedly connected to the other end of the lead screw.

[0009] Furthermore, a turning component is fixedly fitted to the top of the cover plate, the turning component includes a motor fixedly connected to the top of the cover plate, a rotating shaft is fixedly connected to the output end of the motor, and a disc is fixedly connected to the top end of the rotating shaft.

[0010] Furthermore, the turning component further includes an L-shaped plate fixedly connected to the top of the cover plate, a connecting plate is fixedly connected to the end of the L-shaped plate, and a cross plate is hingedly connected to the bottom of the connecting plate.

[0011] Furthermore, a resisting rod in contact with the disc is symmetrically fixedly connected to the bottom of the cross plate, and the top of the disc is inclined.

[0012] Furthermore, two sliding grooves are symmetrically formed at the bottom of the cross plate. A slider is slidably connected inside the sliding groove. The bottom of the slider is hinged with a connecting rod that penetrates into the box body. The bottom end of the connecting rod is fixedly connected with an arc-shaped flap.

[0013] The present invention also includes a control method for a constant temperature control device for the fermentation of agricultural biological agents, including the following steps:

[0014] S01: First, put the biological agent into the box body. Then, start the storage battery to energize the conductive rod, so that the heating wire generates heat, and then heat the water in the water tank. Subsequently, start the water pump, and pump the water into the spiral tube through the water pump to realize the water bath heating around the box body;

[0015] S02: Then, due to the heat generated by the fermentation of the biological agent and the water bath heating of the spiral tube, the temperature inside the box body rises. Then, by using the heat conduction rod, the heat conduction rod heats up and transfers the temperature to the airbag to make the airbag expand, which further drives the toothed plate to move upward, and further drives the lead screw to rotate, thereby driving the moving plate to move;

[0016] S03: Further, drive the sliding piece on the sliding rheostat to move through the extension plate, thereby adjusting the resistance, and then controlling the current magnitude of the heating wire, and further adjusting the heating capacity of the heating wire. Thus, by regulating the temperature of the water, the temperature inside the box body is regulated, and the constant temperature inside the box body is ensured.

[0017] The present invention has the following beneficial effects: 1. In the present invention, the biological agent is put into the box body. Then, the storage battery is used to energize the conductive rod to make the heating wire generate heat, and then heat the water in the water tank. Subsequently, the pump body is controlled to work, and the pump body pumps the water in the water tank through the water inlet pipe, the recovery pipe, and the spiral tube to realize the circulation of water along the spiral tube, thereby heating the box body. The setting of the spiral tube increases the uniform heating of the box body, thereby improving the fermentation effect of the biological agent inside the box body. At the same time, as the temperature of the box body rises due to heat absorption and the heat generated by the fermentation of the biological agent, the temperature inside the box body further rises, so that the heat conduction rod deep into the box body continuously absorbs heat. The heat conduction rod transfers the temperature to the airbag, making the gas inside the airbag expand, which further makes the airbag push the piston plate upward, and then drives the toothed plate to move upward through the moving rod, making the toothed plate drive the gear meshed with it to rotate, and further driving the lead screw to rotate, and further driving the moving plate to move. Thus, the moving plate drives the sliding piece on the sliding rheostat to move through the extension plate, thereby increasing the resistance, and then reducing the current, and further reducing the heating effect of the heating wire, reducing the temperature of the water inside the water tank, and thus reducing the temperature inside the box body. The constant temperature component realizes the automatic adjustment of the temperature inside the box body through the linkage of the heat conduction rod and the airbag, keeping the temperature inside the box body in a constant temperature state, thereby ensuring that the biological agent is always in the best fermentation state.

[0018] 2. The present invention drives the rotating shaft to rotate by controlling the motor, so that the rotating shaft drives the disc to rotate. The top of the disc is inclined. During the rotation of the disc, the disc contacts the two abutting rods, driving the cross plate to rotate reciprocally, and driving the two arc-shaped turning plates to move up and down alternately and reciprocally through the sliders and connecting rods. Thus, the two arc-shaped turning plates alternately and reciprocally stir the biological bacteria agent inside the box body, making the fermentation of the biological bacteria agent more uniform and ensuring better heat dissipation of the biological bacteria agent, thereby improving the fermentation effect of the biological bacteria agent. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0020] Figure 1 It is a schematic structural diagram of a constant temperature control device for agricultural biological bacteria agent fermentation.

[0021] Figure 2 It is a schematic structural diagram of the fermentation component in the present invention.

[0022] Figure 3 It is Figure 2 a side view structural diagram of

[0023] Figure 4 It is a schematic structural diagram of the connection part of the conductive rod and the heating wire in the present invention.

[0024] Figure 5 It is a schematic structural diagram of the spiral tube in the present invention.

[0025] Figure 6 It is a schematic structural diagram of the constant temperature component in the present invention.

[0026] Figure 7 It is a schematic structural diagram of the turning component in the present invention.

[0027] Figure 8 It is Figure 7 a partial bottom view structural diagram of

[0028] In the drawings, the list of components represented by each reference numeral is as follows:

[0029] 1 - Fermentation component, 101 - Base, 102 - Box body, 103 - Cover plate, 104 - Water tank, 105 - Conductive rod, 106 - Heating wire, 107 - Spiral tube, 108 - Water inlet pipe, 109 - Recovery pipe, 110 - Feeding pipe, 111 - Discharge pipe, 2 - Constant temperature component, 201 - Cylindrical tube, 202 - Heat conducting rod, 203 - Air bag, 204 - Piston plate, 205 - Moving rod, 206 - Rack, 207 - Mounting plate, 208 - Battery, 209 - Slide rheostat, 210 - Fixed plate, 211 - Lead screw, 212 - Gear, 213 - Moving plate, 214 - Extension plate, 215 - Guide rod, 216 - Limiting plate, 3 - Turning component, 301 - Motor, 302 - Rotating shaft, 303 - Disc, 304 - L-shaped plate, 305 - Connecting plate, 306 - Cross plate, 307 - Bracing rod, 308 - Chute, 309 - Slide block, 310 - Connecting rod, 311 - Arc-shaped turning plate. Detailed implementation manner

[0030] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the scope of protection of the present invention.

[0031] Example 1, please refer to Figures 1-8, the present invention provides the following technical solutions: A constant temperature control device for the fermentation of agricultural biological agents, including a fermentation component 1; the fermentation component 1 includes a base 101, a box body 102 is fixedly connected to the top of the base 101, and a cover plate 103 is installed on the top of the box body 102; a constant temperature component 2 is fixedly fitted to the top of the cover plate 103. The constant temperature component 2 includes a cylindrical tube 201 fixedly connected to the top of the cover plate 103. The constant temperature component 2 further includes a heat conduction rod 202 fixedly connected through the cover plate 103. An airbag 203 located inside the cylindrical tube 201 is sleeved on the top of the heat conduction rod 202; a piston plate 204 in contact with the airbag 203 is slidably fitted to the inner wall of the cylindrical tube 201. A moving rod 205 penetrating to the outside of the cylindrical tube 201 is fixedly connected to the top of the piston plate 204, and a toothed plate 206 is fixedly connected to the top end of the moving rod 205; the constant temperature component 2 further includes a mounting plate 207 fixedly connected to the outer wall of the box body 102. A storage battery 208 is fixedly connected to the top of the mounting plate 207, and a sliding rheostat 209 electrically connected to the storage battery 208 is fixedly connected to the top of the mounting plate 207; the constant temperature component 2 further includes a fixing plate 210 fixedly connected to the top of the cover plate 103. A lead screw 211 is rotatably connected through one side surface of the fixing plate 210. A gear 212 meshing with the toothed plate 206 is fixedly connected to one end of the lead screw 211. A moving plate 213 is threadedly connected to the circumferential surface of the lead screw 211. An extension plate 214 is fixedly connected to the bottom of the moving plate 213, and the extension plate 214 is fixedly connected to the sliding piece of the sliding rheostat 209. The fermentation component 1 further includes a water tank 104 fixedly connected to the top of the base. A conductive rod 105 penetrates and is fixedly connected to the outer top of the water tank 104. A heating wire 106 is fixedly connected to the bottom end of the conductive rod 105. The conductive rod 105 is electrically connected to the sliding rheostat 209. A spiral tube 107 is embedded in the box body 102. A pump body is installed inside the water tank 104. A water inlet pipe 108 is provided for connecting the output end of the pump body and one end of the spiral tube 107, and a recovery pipe 109 is provided for connecting the input end of the pump body and the other end of the spiral tube 107. A feeding pipe 110 is communicated with the outer wall of the box body 102, and a discharging pipe 111 is communicated with the outer wall of the box body 102.

[0032] The operation process of this embodiment is as follows: By putting the biological bactericide into the box body 102, then energizing the conductive rod 105 through the storage battery 208 to make the heating wire 106 generate heat, and then heating the water in the water tank 104. Subsequently, control the pump body to work. The pump body circulates the water in the water tank 104 through the water inlet pipe 108, the recovery pipe 109, and the spiral pipe 107, so that the water circulates along the spiral pipe 107, thereby heating the box body 102. The setting of the spiral pipe 107 increases the uniform heating of the box body 102, thereby improving the fermentation effect of the biological bactericide inside the box body 102. At the same time, as the temperature of the box body 102 rises due to heat and the heat generated by the fermentation of the biological bactericide, the temperature inside the box body 102 further increases, enabling the heat conduction rod 202 deep inside the box body 102 to continuously absorb heat. The heat conduction rod 202 transfers the temperature to the airbag 203, causing the gas inside the airbag 203 to expand, and then the airbag 203 pushes the piston plate 204 to move upward. Then, through the moving rod 205, the toothed plate 206 is driven to move upward, causing the toothed plate 206 to drive the gear 212 meshing with it to rotate, and then driving the lead screw 211 to rotate, further driving the moving plate 213 to move. Thus, the moving plate 213 drives the slide on the sliding rheostat 209 to move through the extension plate 214, thereby increasing the resistance, further reducing the current, and further reducing the heating effect of the heating wire 106, reducing the temperature of the water inside the water tank 104, and thus reducing the temperature inside the box body 102. Through the linkage of the heat conduction rod 202 and the airbag 203 of the constant temperature component 2, the automatic adjustment of the temperature inside the box body 102 is realized, keeping the temperature inside the box body 102 at a constant temperature state, thereby ensuring that the biological bactericide is always in the best fermentation state.

[0033] The operation process of this embodiment is as follows:.

[0034] Embodiment 2, please refer to Figures 1-8, on the basis of the first embodiment, the second embodiment is improved as follows. The constant temperature component 2 further includes a guide rod 215 fixedly connected to one side of the fixing plate 210. The guide rod 215 is slidably and penetratingly engaged with the moving rod 205. The other end of the lead screw 211 is fixedly connected with a limiting plate 216. The top of the cover plate 103 is fixedly fitted with a turning component 3. The turning component 3 includes a motor 301 fixedly connected to the top of the cover plate 103. The output end of the motor 301 is fixedly connected with a rotating shaft 302. The top end of the rotating shaft 302 is fixedly connected with a disc 303. The turning component 3 further includes an L-shaped plate 304 fixedly connected to the top of the cover plate 103. The end of the L-shaped plate 304 is fixedly connected with a connecting plate 305. The bottom of the connecting plate 305 is hingedly connected with a cross plate 306. The bottom of the cross plate 306 is symmetrically and fixedly connected with abutting rods 307 that abut against the disc 303. The top of the disc 303 is inclined. Two sliding grooves 308 are symmetrically formed at the bottom of the cross plate 306. Sliders 309 are slidably connected inside the sliding grooves 308. The bottom of the slider 309 is hingedly connected with a connecting rod 310 that penetrates into the interior of the box body 102. The bottom end of the connecting rod 310 is fixedly connected with an arc-shaped turning plate 311.

[0035] The operation process of this embodiment is as follows: By controlling the motor 301 to drive the rotating shaft 302 to rotate, the rotating shaft 302 drives the disc 303 to rotate. The top of the disc 303 is inclined. During the rotation of the disc 303, the disc 303 abuts against the two abutting rods 307, driving the cross plate 306 to rotate reciprocally, and driving the two arc-shaped turning plates 311 to move up and down alternately and reciprocally through the sliders 309 and the connecting rods 310, so as to alternately and reciprocally turn the biological bactericide inside the box body 102, making the fermentation of the biological bactericide more uniform and ensuring better heat dissipation of the biological bactericide, thereby improving the fermentation effect of the biological bactericide.

[0036] In the description of this specification, the description with reference to terms such as "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0037] The preferred embodiments of the present invention disclosed above are only used to help illustrate the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to the specific embodiments described. Obviously, many modifications and variations can be made according to the content of this specification. These embodiments are selected and specifically described in this specification to better explain the principles and practical applications of the present invention, so that those skilled in the art in the technical field can understand and utilize the present invention well. The present invention is only limited by the claims and their full scope and equivalents.

Claims

1. A constant temperature control device for the fermentation of agricultural biological bacterial agents, comprising a fermentation component (1); characterized in that: The fermentation assembly (1) includes a base (101), a box body (102) is fixedly connected to the top of the base (101), and a cover plate (103) is installed on the top of the box body (102); A temperature control assembly (2) is fixedly fitted to the top of the cover plate (103). The temperature control assembly (2) includes a cylindrical tube (201) fixedly connected to the top of the cover plate (103). The temperature control assembly (2) further includes a heat conducting rod (202) fixedly connected through the cover plate (103). An air bag (203) located inside the cylindrical tube (201) is sleeved on the top of the heat conducting rod (202); A piston plate (204) in sliding fit with the inner wall of the cylindrical tube (201) and in contact with the air bag (203) is provided. A moving rod (205) penetrating to the outside of the cylindrical tube (201) is fixedly connected to the top of the piston plate (204), and a toothed plate (206) is fixedly connected to the top end of the moving rod (205); The temperature control assembly (2) further includes a mounting plate (207) fixedly connected to the outer wall of the box body (102). A storage battery (208) is fixedly connected to the top of the mounting plate (207), and a sliding rheostat (209) electrically connected to the storage battery (208) is fixedly connected to the top of the mounting plate (207); The temperature control assembly (2) further includes a fixing plate (210) fixedly connected to the top of the cover plate (103). A lead screw (211) is rotatably connected through one side surface of the fixing plate (210). A gear (212) meshing with the toothed plate (206) is fixedly connected to one end of the lead screw (211). A moving plate (213) is threadedly connected to the circumferential surface of the lead screw (211). An extension plate (214) is fixedly connected to the bottom of the moving plate (213), and the extension plate (214) is fixedly connected to the sliding piece of the sliding rheostat (209).

2. The constant temperature control device for the fermentation of agricultural biological bacteria agents according to claim 1, wherein, The fermentation assembly (1) further includes a water tank (104) fixedly connected to the top of the base. A conducting rod (105) penetrates and is fixedly connected to the outer top of the water tank (104). A heating wire (106) is fixedly connected to the bottom end of the conducting rod (105), and the conducting rod (105) is electrically connected to the sliding rheostat (209).

3. The constant temperature control device for the fermentation of agricultural biological bacterial agents according to claim 2, characterized in that, A spiral tube (107) is embedded in the box body (102). A pump body is installed inside the water tank (104). A water inlet pipe (108) communicating the output end of the pump body with one end of the spiral tube (107) is provided, and a recovery pipe (109) communicating the input end of the pump body with the other end of the spiral tube (107) is provided. A feeding pipe (110) is communicated with the outer wall of the box body (102), and a discharging pipe (111) is communicated with the outer wall of the box body (102).

4. The constant temperature control device for fermentation of agricultural biological bacterial agents according to claim 3, characterized in that, The temperature control assembly (2) further includes a guide rod (215) fixedly connected to one side surface of the fixing plate (210). The guide rod (215) is in penetrating sliding fit with the moving rod (205), and a limiting plate (216) is fixedly connected to the other end of the lead screw (211).

5. The constant temperature control device for the fermentation of agricultural biological bacterial agents according to claim 4, characterized in that, The top of the cover plate (103) is fixedly fitted with a flip assembly (3), the flip assembly (3) comprising a motor (301) fixedly connected to the top of the cover plate (103), the output end of the motor (301) being fixedly connected to a rotating shaft (302), the top end of the rotating shaft (302) being fixedly connected to a disc (303).

6. The constant temperature control device for the fermentation of agricultural biological bacteria agents according to claim 5, characterized in that, The flip assembly (3) further comprises an L-shaped plate (304) fixedly connected to the top of the cover plate (103), the end of the L-shaped plate (304) being fixedly connected to a connecting plate (305), and the bottom of the connecting plate (305) being hingedly connected to a transverse plate (306).

7. The constant temperature control device for the fermentation of agricultural biological bacteria agents according to claim 6, characterized in that, The bottom of the transverse plate (306) is symmetrically fixedly connected with a stopper rod (307) that contacts the circular disc (303), and the top of the circular disc (303) is arranged in an inclined manner.

8. The constant temperature control device for fermentation of agricultural biological bacterial agents according to claim 7, characterized in that, Two sliding grooves (308) are symmetrically provided at the bottom of the transverse plate (306), a slider (309) is slidably connected inside the sliding groove (308), a connecting rod (310) penetrating into the box body (102) is hingedly connected at the bottom of the slider (309), and an arc-shaped flap (311) is fixedly connected to the bottom end of the connecting rod (310).

9. The control method of the constant temperature control device for agricultural biological inoculant fermentation according to claim 8, characterized in that, The following steps are involved: S01: First, the biological agent is put into the box (102), and then the storage battery (208) is started to energize the conductive rod (105), thereby causing the heating wire (106) to generate heat, thereby heating the water in the water tank (104), and then the water pump is started to pump water into the spiral tube (107) through the water pump, thereby achieving water bath heating of the box (102) for one week; S02: Next, the heat is generated by the fermentation of the biological bacteria agent and the water area of ​​the spiral tube (107) is heated, so that the temperature inside the box (102) is increased. Then, by using the heat conducting rod (202), the heat conducting rod (202) is heated up and the temperature is transferred to the air bag (203) to expand the air bag, thereby driving the tooth plate (206) to move upward, further driving the screw rod (211) to rotate, thereby driving the moving plate (213) to move; S03: Further, the sliding plate on the sliding rheostat (209) is driven to move by the extension plate (214), thereby adjusting the resistance, thereby controlling the current of the heating wire (106), thereby adjusting the heating capacity of the heating wire (106), thereby adjusting the temperature of the water, thereby adjusting the internal temperature of the box (102), thereby ensuring a constant temperature inside the box (102).

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