A combined hot and cold oven for food processing

Abstract

This invention provides an integrated hot and cold drying oven for food processing, belonging to the technical field of food processing drying ovens. Its structure includes an integrated drying oven with an air conditioning unit installed at the rear of the oven cavity. A first circulating fan device is longitudinally mounted on the right side windbreak wall of the integrated drying oven, and a second circulating fan device is longitudinally mounted on the left side windbreak wall. The cooperation of heating elements, a dehumidifier, a heating sensor, and the first and second circulating fan devices enables the left and right circulating hot air to fully cover and evenly accelerate constant-temperature drying of the food. The cooperation of the air conditioning unit, a cooling sensor, and the first and second circulating fan devices enables the left and right circulating cold air to fully cover and evenly accelerate constant-temperature cooling and condensation of the food, ensuring uniform and efficient food processing without uneven drying or condensation.

Description

Technical Field

[0001] This invention relates to an integrated hot and cold oven for food processing, belonging to the technical field of food processing ovens. Background Technology

[0002] Different foods sometimes require low-temperature baking ovens for cooling and condensation during processing, while high-temperature baking ovens are used for drying. Two baking ovens are needed. Existing high-temperature baking ovens generally just add multiple rows of heating rods inside the oven chamber, and in order to speed up the baking process, several fans are added to circulate the hot air inside the oven. Low-temperature baking ovens replace the heating rods with air conditioners to blow cold air.

[0003] However, in the operation of existing high-temperature baking ovens, because the fans are fixed, the hot air circulation in the oven can only flow in specific areas. The food on the carts in the oven dries quickly in areas where the air is circulated, while the food in areas where the air is not circulated dries slowly. Low-temperature baking ovens also have the same problem, with uneven drying / condensation of food. In addition, two separate baking ovens would take up too much space and have high production costs. In order to address the above shortcomings, this invention proposes a hot and cold integrated baking oven for food processing. Summary of the Invention

[0004] In view of the shortcomings of the existing technology, the purpose of this invention is to provide a hot and cold integrated baking oven for food processing to solve the existing problems.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solution: a combined heating and cooling oven for food processing, comprising an integrated oven, wherein an air conditioning unit is installed on the rear side of the integrated oven cavity, and a first circulating fan device is longitudinally mounted on the right windbreak wall of the integrated oven, and a second circulating fan device is longitudinally mounted on the left windbreak wall of the integrated oven. Multiple heating elements are installed above both the first and second circulating fan devices. Multiple dehumidifiers are spaced apart on the top surface of the integrated oven. Heating and cooling sensors are respectively installed on the top surface of the integrated oven cavity. Anti-collision railings are installed on the lower side of the integrated oven cavity. An operation panel is installed on the front side of the integrated oven. A control box body, electrically connected to the air conditioning unit, the first circulating fan device, the second circulating fan device, the heating elements, the dehumidifiers, the heating sensor, the cooling sensor, and the operation panel, is installed on the rear side of the integrated oven. The first circulating fan device includes a first lifting fan group, a second lifting fan group, and a third lifting fan group. A first hinge group connects the first lifting fan group and the second lifting fan group, and a second hinge group connects the second lifting fan group and the third lifting fan group. Multiple compression push rod assemblies for resetting and pushing open the first and second hinge groups are laterally connected to the first lifting fan group and the second lifting fan group, and to the second lifting fan group and the third lifting fan group, respectively. A third hinge group is connected to the left side of the first lifting fan group, and a fourth hinge group is connected to the right side of the third lifting fan group. A first winding device for pulling the third lifting fan group to the left is laterally connected to the third lifting fan group, and a second winding device for pulling the first lifting fan group to the right is laterally connected to the first lifting fan group. The first circulating fan device and the second circulating fan device have the same structure. The first lifting fan unit includes a fan slide, and a fan assembly is mounted on the middle of the fan slide. A fifth hinge group is connected to the upper end of the fan assembly, and a sixth hinge group is connected to the lower end of the fan assembly. A lifting mechanism for driving the fan assembly to move up and down is vertically connected to the rear side of the fan assembly. The first lifting fan unit, the second lifting fan unit, and the third lifting fan unit have the same structure.

[0006] A further improvement is that the integrated drying oven includes a chamber body, with a right windbreak wall on the right side of the chamber body cavity and a left windbreak wall on the left side of the chamber body cavity. A right circulation air duct is formed between the right windbreak wall and the right wall of the chamber body, and a left circulation air duct is formed between the left windbreak wall and the left wall of the chamber body. Multiple dehumidification holes are spaced apart on the top surface of the chamber body, and a doorway is opened on the front side of the chamber body, with a sliding door installed on the doorway.

[0007] A further improvement is that the air conditioning unit includes an indoor unit body, and the top surface of the indoor unit body is connected to a main air outlet pipe, and the right end of the main air outlet pipe is connected to a right cold air outlet pipe leading to the right circulation air duct, the left end of the main air outlet pipe is connected to a left cold air outlet pipe leading to the left circulation air duct, and the indoor unit body is connected to an outdoor unit body installed on the roof of the building.

[0008] A further improvement is that the right windbreak wall has an L-shaped structure, and an air outlet is provided in the middle of the right windbreak wall. Two horizontal rails for sliding the first circulating fan device are symmetrically arranged on the upper and lower sides of the air outlet. The right windbreak wall has the same structure as the left windbreak wall. The bottom surface of the two horizontal rails is provided with a first hinge slide groove in the middle, and two track grooves are provided on the left and right sides of the bottom surface of the horizontal rails, and slide rails are provided in the two track grooves.

[0009] A further improvement is that the fan slide includes a slide body, and a fan slide groove is opened in the middle of the slide body. Two vertical rails are symmetrically arranged on the left and right walls of the fan slide groove. Multiple pulleys that roll against the slide rails are arranged on the bottom surface of the slide body. Multiple first spherical abutment rollers are arranged on the front and rear sides of the slide body. A second hinge groove is provided in the middle of the bottom surface of the two vertical rails.

[0010] A further improvement is that the fan assembly includes a first fan component and a second fan component, with a splicing panel fixedly installed between the first fan component and the second fan component, and the first fan component and the second fan component having the same structure; The first fan component includes a fan housing, and a fan opening is provided in the middle of the fan housing. An exhaust fan and a fan hood are respectively installed on the fan opening. Multiple second spherical abutments are provided on the front and rear sides of the fan housing.

[0011] A further improvement is that the lifting mechanism includes a crossbeam, with a fixed seat in the middle of the crossbeam, and multiple telescopic cylinder bodies vertically arranged on the left and right sides of the crossbeam. Multiple support slide rods are movably fitted at the tail of the left and right sides of the crossbeam.

[0012] A further improvement is that the first hinge group includes multiple hinge pieces, which are made of stainless steel, and each hinge piece has multiple central shafts at the middle of its upper and lower ends. Each central shaft is fitted with a bearing and a guide wheel. The first, second, third, fourth, fifth, and sixth hinge groups have the same structure.

[0013] A further improvement is that the first and second hinge groups are initialized to a fully open state, the third and fourth hinge groups are initialized to a half-open state, the fifth hinge group is initialized to a fully closed state, and the sixth hinge group is initialized to a fully open state.

[0014] A further improvement is that each of the compression push rod assemblies includes two movable seats, and a spring telescopic rod is movably fitted between the two movable seats. A compression spring is fitted on the body of the spring telescopic rod, and anti-disengagement blocks are provided at the left and right tail ends of the spring telescopic rod.

[0015] Further improvements are made to the existing technology, which includes the heating element, dehumidifier, heating sensor and cooling sensor, operation panel, main body of control box, first winder, second winder, main body of air conditioner indoor unit, main body of air conditioner outdoor unit, exhaust fan, and main body of telescopic cylinder. The structure of each component will not be described in detail here.

[0016] The beneficial effects of the invention are: This invention provides a combined hot and cold drying oven for food processing. It integrates two sets of circulating fan devices (comprising a first, second, and third lifting fan unit, a first hinge group, a second hinge group, a compression push rod assembly, a third hinge group, a fourth hinge group, a first winder, and a second winder) with an air conditioning unit, heating elements, a dehumidifier, a heating sensor, a cooling sensor, anti-collision railings, an operation panel, and an electrical control box on a single unit. The heating elements, dehumidifier, and heating sensor work in conjunction with the first and second circulating fan units to achieve uniform and accelerated constant-temperature drying of the food through left-right circulating hot air. Conversely, the air conditioning unit and cooling sensor work in conjunction with the first and second circulating fan units to achieve uniform and accelerated constant-temperature cooling and condensation of the food through left-right circulating cold air. This ensures uniform and efficient food processing without uneven drying or condensation issues.

[0017] In addition, both the first and second circulating fan devices have the function of pulling the exhaust fan to move laterally left and right as well as up and down. When the exhaust fan moves, the gaps created at the air outlet are automatically filled by the hinge groups, allowing the air in the left and right circulating ducts to circulate normally. This prevents the exhaust fan from directly drawing air laterally left and right from the cavity of the chamber. This equipment has a combined hot and cold processing function, requiring only one device, making food processing more convenient and space-saving, with low equipment cost. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the internal structure of a combined hot and cold oven for food processing according to the present invention. Figure 2 This is a front view of an integrated hot and cold baking oven for food processing according to the present invention. Figure 3 This is a schematic diagram of the internal structure of the integrated drying oven of the present invention; Figure 4 This is a schematic diagram of the air conditioning unit structure of the present invention; Figure 5 This is a left view of the first circulating fan device of the present invention; Figure 6 This is a schematic diagram of the right windbreak wall structure of the present invention; Figure 7 This is a rendering of the assembly of the horizontal rail and the first hinge group of the present invention; Figure 8 For the present invention Figure 7 Enlarged view of part A in the image; Figure 9 This is a rendering of the assembly of the horizontal rail and the fan slide of the present invention; Figure 10 This is a schematic diagram of the first lifting fan unit of the present invention; Figure 11 This is a schematic diagram of the wind turbine assembly structure of the present invention; Figure 12 This is a schematic diagram of the lifting mechanism structure of the present invention; Figure 13 This is a schematic diagram of the compression push rod assembly structure of the present invention. Detailed Implementation

[0019] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0020] Please see Figures 1-13This invention provides a schematic diagram of a heating and cooling integrated baking oven for food processing: its structure includes an integrated baking oven 1, with an air conditioning unit 2 installed on the rear side of the cavity of the integrated baking oven 1. A first circulating fan device 3 is longitudinally mounted on the right windbreak wall of the integrated baking oven 1, and a second circulating fan device 4 is longitudinally mounted on the left windbreak wall of the integrated baking oven 1. Multiple heating elements 5 are installed above both the first and second circulating fan devices 3 and 4. Multiple dehumidifiers 6 are spaced apart on the top surface of the integrated baking oven 1. Heating sensors 7 and cooling sensors 8 are respectively installed on the top surface of the cavity of the integrated baking oven 1. A crash barrier 9 is installed on the lower side of the cavity. An operation panel 10 is installed on the front side of the integrated drying oven 1. A control box body 11 is installed on the rear side of the integrated drying oven 1, which is electrically connected to the air conditioning unit 2, the first circulating fan device 3, the second circulating fan device 4, the heating element 5, the dehumidifier 6, the heating sensor 7, the cooling sensor 8, and the operation panel 10. The first circulating fan device 3 includes a first lifting fan unit 31, a second lifting fan unit 32, and a third lifting fan unit 33. A first hinge group 34 connects the first lifting fan unit 31 and the second lifting fan unit 32, and the second lifting fan unit 32 and the third lifting fan unit are connected by a first hinge group 34. A second hinge group 35 is connected between 33. Multiple compression push rod assemblies 36 for resetting and pushing open the first hinge group 34 and the second hinge group 35 are laterally connected between the first lifting fan group 31 and the second lifting fan group 32, and between the second lifting fan group 32 and the third lifting fan group 33. A third hinge group 37 is connected to the left side of the first lifting fan group 31, and a fourth hinge group 38 is connected to the right side of the third lifting fan group 33. A first retractor 39 for pulling the third lifting fan group 33 to the left is laterally connected to the third lifting fan group 33. A first retractor 39 for pulling the first lifting fan group 33 to the left is laterally connected to the first lifting fan group 31. The lifting fan unit 31 has a second retractor 310 that pulls to the right. The first circulating fan device 3 and the second circulating fan device 4 have the same structure. The first lifting fan unit 31 includes a fan slide 311, and a fan assembly 312 is mounted on the middle of the fan slide 311. The upper end of the fan assembly 312 is connected to a fifth hinge group 313, and the lower end of the fan assembly 312 is connected to a sixth hinge group 314. The rear side of the fan assembly 312 is vertically connected to a lifting mechanism 315 for driving the fan assembly 312 to move up and down. The first lifting fan unit 31, the second lifting fan unit 32 and the third lifting fan unit 33 have the same structure.

[0021] The integrated drying oven 1 includes a chamber body 101, with a right windbreak wall 102 on the right side of the cavity of the chamber body 101 and a left windbreak wall 103 on the left side of the cavity of the chamber body 101. A right circulation air duct 104 is formed between the right windbreak wall 102 and the right wall of the chamber body 101, and a left circulation air duct 105 is formed between the left windbreak wall 103 and the left wall of the chamber body 101. A plurality of dehumidification holes 106 are spaced apart on the top surface of the chamber body 101, and a doorway 107 is opened on the front side of the chamber body 101, with a sliding door 108 installed on the doorway 107.

[0022] The air conditioning unit 2 includes an indoor unit body 21, and the top surface of the indoor unit body 21 is connected to a main air outlet duct 22. The right end of the main air outlet duct 22 is connected to a right cold air outlet duct 23 leading to the right circulation air duct 104, and the left end of the main air outlet duct 22 is connected to a left cold air outlet duct 24 leading to the left circulation air duct 105. An outdoor unit body 25 installed on the top surface of the room body 101 is connected to the indoor unit body 21.

[0023] The right windbreak wall 102 has an L-shaped structure, and an air outlet 1021 is provided in the middle of the right windbreak wall 102. Two horizontal rails 1022 for sliding of the first circulating fan device 3 are symmetrically arranged on the upper and lower sides of the air outlet 1021. The right windbreak wall 102 has the same structure as the left windbreak wall 103. A first hinge slide groove 10221 is provided in the middle of the bottom surface of the two horizontal rails 1022. Two track grooves 10222 are provided on the left and right sides of the bottom surface of the track groove of the horizontal rails 1022, and slide rails 10223 are provided in the two track grooves 10222.

[0024] The fan slide 311 includes a slide body 3111, and a fan slide groove 3112 is provided in the middle of the slide body 3111. Two vertical rails 3113 are symmetrically arranged on the left and right walls of the fan slide groove 3112. Multiple pulleys 3114 are provided on the bottom surface of the slide body 3111, which roll against the slide rails 10223. Multiple first spherical abutment wheels 3115 are provided on the front and rear sides of the slide body 3111. A second hinge slide groove 31131 is provided in the middle of the bottom surface of the two vertical rails 3113.

[0025] The fan assembly 312 includes a first fan component 3121 and a second fan component 3122. A splicing panel 3123 is fixed between the first fan component 3121 and the second fan component 3122. The first fan component 3121 and the second fan component 3122 have the same structure. The first fan component 3121 includes a fan sleeve 31211. A fan sleeve opening 31212 is opened in the middle of the fan sleeve 31211. An exhaust fan 31213 and a fan cover 31214 are respectively installed on the fan sleeve opening 31212. A plurality of second spherical abutment rollers 31215 are provided on the front and rear sides of the fan sleeve 31211.

[0026] The lifting mechanism 315 includes a crossbeam 3151, a fixed seat 3152 is provided in the middle of the crossbeam 3151, and multiple telescopic cylinder bodies 3153 are vertically arranged on the left and right sides of the crossbeam 3151. Multiple support slide rods 3154 are movably fitted at the tail of the left and right sides of the crossbeam 3151.

[0027] The first hinge group 34 includes multiple hinge pieces 341 that are hinged together. The hinge pieces 341 are made of stainless steel, and multiple central shafts 342 are provided at the middle of the upper and lower ends of each hinge piece 341. Each central shaft 342 is fitted with a bearing 343 and a guide wheel 344. The first hinge group 34, the second hinge group 35, the third hinge group 37, the fourth hinge group 38, the fifth hinge group 313, and the sixth hinge group 314 have the same structure.

[0028] The first hinge group 34 and the second hinge group 35 are initialized to the fully open state, the third hinge group 37 and the fourth hinge group 38 are initialized to the half-open state, the fifth hinge group 313 is initialized to the fully closed state, and the sixth hinge group 314 is initialized to the fully open state.

[0029] Each of the compression push rod assemblies 36 includes two movable seats 361, and a spring telescopic rod 362 is movably fitted between the two movable seats 361. A compression spring 363 is fitted on the rod body of the spring telescopic rod 362, and anti-detachment blocks 364 are provided at the left and right tails of the spring telescopic rod 362.

[0030] Working principle: During processing, the food carts are pushed into the room 101 and the sliding door 108 is closed. When the food needs to be cooled and condensed, the air conditioning unit 2 is turned on for cooling. The cold air is diverted to the right circulating air duct 104 through the right cold air outlet duct 23 and to the left circulating air duct 105 through the left cold air outlet duct 24. The cooling sensor 8 is also activated for low-temperature constant temperature sensing. Finally, the first circulating fan device 3 and the second circulating fan device 4 are activated to blow circulating cold air to uniformly and accelerate the cooling and condensation of the food. It should be noted that the heating sensor 7, the heating element 5 and the dehumidifier 6 do not need to be activated.

[0031] When food is to be dried at high temperature, the heating sensor 7, heating element 5 and dehumidifier 6 are activated. Finally, the first circulating fan device 3 and the second circulating fan device 4 are activated to blow circulating hot air to evenly and accelerate the drying of the food. The dehumidifier 6 is used to remove the moisture generated during the drying process. The heating sensor 7 is used for high-temperature constant temperature sensing. It should be noted that the air conditioning unit 2 and the cooling sensor 8 do not need to be activated.

[0032] In addition, the first circulating fan device 3 and the second circulating fan device 4 operate in a fully covered circulating air mode. First, all exhaust fans 31213 are turned on to allow the circulating air to circulate according to the specified conditions. Figure 1 The flow is as follows: When the first lifting fan unit 31, the second lifting fan unit 32, and the third lifting fan unit 33 move to the left on the horizontal rail 1022, the first winder 39 winds up the rope, while the second winder 310 simultaneously releases the rope. Pulling the third lifting fan unit 33, the second lifting fan unit 32, and the first lifting fan unit 31 from right to left, under the action of the compression push rod assembly 36, they first compress slightly to the left. Only when the third hinge group 37 is fully closed will the spring on the compression push rod assembly 36 continue to compress, allowing the first hinge group 34 and the second hinge group 35 to also fully close. Finally, the first lifting fan unit 31, the second lifting fan unit 32, and the third lifting fan unit 33 move to the left to the maximum extent, allowing the fourth hinge group 38 to be fully open. And to move the first lifting fan unit 33 to the left... When the first lifting fan unit 31, the second lifting fan unit 32, and the third lifting fan unit 33 move to the right on the horizontal rail 1022, the second retractor 310 first releases the rope. Under the action of the compression push rod assembly 36, the third lifting fan unit 33 and the second lifting fan unit 32 automatically move to the right under the spring force, while the first hinge group 34 and the second hinge group 35 are also unfolded. Then, the second retractor 310 retracts the rope to achieve the same rightward movement as described above, so that the first hinge group 34 and the second hinge group 35 are fully closed again. Finally, the first lifting fan unit 31, the second lifting fan unit 32, and the third lifting fan unit 33 move to the right to the maximum extent, so that the third hinge group 37 is in a fully open state. The above describes the left and right lateral movement operation of the exhaust fan 31213.

[0033] The upward and downward sliding method of the exhaust fan 31213 is achieved by retracting and pulling down the fan assembly 312 of the telescopic cylinder body 3153, so that the exhaust fan 31213 on the first fan component 3121 and the second fan component 3122 descends synchronously. During this process, the fifth hinge group 313 will be fully open and the sixth hinge group 314 will be fully closed, so that the exhaust fan 31213 can slide downward. It can be used in conjunction with the left and right lateral movement of the exhaust fan 31213, or the exhaust fan 31213 can be slid up and down for a distance first, and then the left and right lateral movement can be used separately. Both methods can achieve full coverage of circulating air for food.

[0034] In addition, the synchronous opening and closing design of the first hinge group 34, the second hinge group 35, the third hinge group 37, the fourth hinge group 38, the fifth hinge group 313 and the sixth hinge group 314 is to fill the gap of the air outlet 1021, so that the gas in the left circulation duct 105 and the right circulation duct 104 can circulate normally and there will be no problem of direct horizontal left and right air intake from the cavity of the chamber 101.

[0035] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0036] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A combined hot and cold oven for food processing, characterized in that: Its structure includes an integrated drying oven, with an air conditioning unit installed at the rear of the oven cavity. A first circulating fan device is longitudinally mounted on the right windbreak wall of the integrated drying oven, and a second circulating fan device is longitudinally mounted on the left windbreak wall. Multiple heating elements are installed above both the first and second circulating fan devices. Multiple dehumidifiers are spaced apart on the top surface of the integrated drying oven. Heating and cooling sensors are respectively installed on the top surface of the oven cavity. Anti-collision railings are installed on the lower side of the oven cavity. An operation panel is installed on the front side of the integrated drying oven. A control box body that is electrically connected to the air conditioning unit, the first circulating fan device, the second circulating fan device, the heating elements, the dehumidifiers, the heating sensor, the cooling sensor, and the operation panel is installed on the rear side of the integrated drying oven. The first circulating fan device includes a first lifting fan group, a second lifting fan group, and a third lifting fan group. A first hinge group connects the first lifting fan group and the second lifting fan group, and a second hinge group connects the second lifting fan group and the third lifting fan group. Multiple compression push rod assemblies for resetting and pushing open the first and second hinge groups are laterally connected to the first lifting fan group and the second lifting fan group, and to the second lifting fan group and the third lifting fan group, respectively. A third hinge group is connected to the left side of the first lifting fan group, and a fourth hinge group is connected to the right side of the third lifting fan group. A first winding device for pulling the third lifting fan group to the left is laterally connected to the third lifting fan group, and a second winding device for pulling the first lifting fan group to the right is laterally connected to the first lifting fan group. The first circulating fan device and the second circulating fan device have the same structure. The first lifting fan unit includes a fan slide, and a fan assembly is mounted on the middle of the fan slide. A fifth hinge group is connected to the upper end of the fan assembly, and a sixth hinge group is connected to the lower end of the fan assembly. A lifting mechanism for driving the fan assembly to move up and down is vertically connected to the rear side of the fan assembly. The first lifting fan unit, the second lifting fan unit, and the third lifting fan unit have the same structure.

2. The integrated hot and cold drying oven for food processing according to claim 1, characterized in that: The integrated drying oven includes a chamber body, with a right windbreak wall on the right side of the chamber body cavity and a left windbreak wall on the left side of the chamber body cavity. A right circulation air duct is formed between the right windbreak wall and the right wall of the chamber body, and a left circulation air duct is formed between the left windbreak wall and the left wall of the chamber body. Multiple dehumidification holes are spaced apart on the top surface of the chamber body, and a doorway is opened on the front side of the chamber body, with a sliding door installed on the doorway.

3. The integrated hot and cold drying oven for food processing according to claim 2, characterized in that: The air conditioning unit includes an indoor unit body, and the top surface of the indoor unit body is connected to a main air outlet pipe. The right end of the main air outlet pipe is connected to a right cold air outlet pipe leading to the right circulation air duct, and the left end of the main air outlet pipe is connected to a left cold air outlet pipe leading to the left circulation air duct. The indoor unit body is connected to an outdoor unit body installed on the top surface of the building.

4. The integrated hot and cold drying oven for food processing according to claim 3, characterized in that: The right windbreak wall has an L-shaped structure, and an air outlet is provided in the middle of the right windbreak wall. Two horizontal rails for sliding the first circulating fan device are symmetrically arranged on the upper and lower sides of the air outlet. The right windbreak wall has the same structure as the left windbreak wall. The bottom surface of the two horizontal rails is provided with a first hinge slide groove in the middle, and two track grooves are provided on the left and right sides of the bottom surface of the horizontal rails, and slide rails are provided in the two track grooves.

5. A combined hot and cold oven for food processing according to claim 4, characterized in that: The fan slide includes a slide body, and a fan slide groove is provided in the middle of the slide body. Two vertical rails are symmetrically arranged on the left and right walls of the fan slide groove. Multiple pulleys that roll against the slide rails are provided on the bottom surface of the slide body. Multiple first spherical abutment rollers are provided on the front and rear sides of the slide body. A second hinge groove is provided in the middle of the bottom surface of the two vertical rails.

6. A combined hot and cold oven for food processing according to claim 5, characterized in that: The fan assembly includes a first fan component and a second fan component, and a splicing panel is fixedly installed between the first fan component and the second fan component. The first fan component and the second fan component have the same structure. The first fan component includes a fan housing, and a fan opening is provided in the middle of the fan housing. An exhaust fan and a fan hood are respectively installed on the fan opening. Multiple second spherical abutments are provided on the front and rear sides of the fan housing.

7. A combined hot and cold oven for food processing according to claim 6, characterized in that: The lifting mechanism includes a crossbeam, with a fixed seat in the middle of the crossbeam, and multiple telescopic cylinder bodies vertically arranged on the left and right sides of the crossbeam. Multiple support slide rods are movably fitted at the tail of the left and right sides of the crossbeam.

8. A combined hot and cold drying oven for food processing according to claim 7, characterized in that: The first hinge group includes multiple hinge pieces, which are made of stainless steel. Each hinge piece has multiple central shafts at the middle of its upper and lower ends. Each central shaft is fitted with a bearing and a guide wheel. The first, second, third, fourth, fifth, and sixth hinge groups have the same structure.

9. A combined hot and cold drying oven for food processing according to claim 8, characterized in that: The first and second hinge groups are initialized to the fully open state, the third and fourth hinge groups are initialized to the half-open state, the fifth hinge group is initialized to the fully closed state, and the sixth hinge group is initialized to the fully open state.

10. A combined hot and cold oven for food processing according to claim 9, characterized in that: Each of the compression push rod assemblies includes two movable seats, and a spring telescopic rod is movably fitted between the two movable seats. A compression spring is fitted on the body of the spring telescopic rod, and anti-disengagement blocks are provided at the left and right tail ends of the spring telescopic rod.

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