A drying room

Abstract

A drying room is located next to the scalding production room. The drying room includes: a first fan unit, with a first drying chamber formed on the air outlet side and a first air inlet chamber formed on the air inlet side; a second fan unit, with a second drying chamber formed on the air outlet side adjacent to the first drying chamber and connected to the first air inlet chamber on the air inlet side; a third fan unit, with a third drying chamber formed on the air outlet side and a second air inlet chamber formed on the air inlet side, the second air inlet chamber being separated from the second drying chamber by a ventilated safety fence; and a steam radiator, fixedly installed in the first air inlet chamber and fixedly connected to the wall of the drying room. Steam in the production room is connected to the steam radiator through a pipe to heat the air in the first air inlet chamber. The heated air forms hot air of a first volume and hot air of a second volume, which are blown towards the first and second drying chambers. The heated air in the first and second drying chambers passes through the safety fence into the second air inlet chamber and forms hot air of a second volume, which is blown towards the third drying chamber.

Description

Technical Field

[0001] This utility model relates to the field of food production and processing, and in particular to a drying room. Background Technology Steamed rice noodles and steamed rice noodle rolls are traditional rice-based foods originating from southern China. Steamed rice noodles are strips or wide sheets of wet rice flour, made by steaming rice flour batter. They are soft and elastic and need to be tied or rolled. Steamed rice noodle rolls are small pieces cut from a whole sheet of wet rice flour batter. Both require drying to remove most of the moisture, extend shelf life, and facilitate packaging, transportation, and subsequent preparation such as brewing, cooking, or frying.

[0002] Currently, the large-scale production of scalded skin and scalded skin blocks generally relies on drying rooms for dehydration. However, existing drying room technology has some significant limitations and cannot meet the demands of efficient and high-quality production. First, existing drying rooms typically cannot provide two different drying environments within the same facility, leading to uneven product drying quality. Scalded skin and scalded skin blocks have significantly different requirements for drying conditions due to their different shapes and physical properties. Scalded skin is bundled into strips with a compact structure, requiring a large air volume and force to penetrate and effectively remove internal moisture. Scalded skin blocks, on the other hand, are small, dispersed pieces with a large air-exposed area and are fragile; excessive air volume can cause them to be blown apart or cracked on the surface, affecting the finished product's appearance. Therefore, they require a gentler drying environment with lower air volume. Existing drying rooms typically only have one unified chamber and one air supply system, making it impossible to dry these two products in separate areas simultaneously. If drying is forced within the same room, only a compromise airflow setting can be adopted. The result will inevitably be either incomplete drying and spoilage due to insufficient airflow, or surface hardening or shape damage due to excessive airflow, severely restricting production efficiency and product quality improvement. Furthermore, existing drying rooms have low energy efficiency and high operating costs. The production process of hot-skinned skin requires multiple steam radiators, and currently, the waste steam at the exhaust end of these radiators generates a large amount of heat-rich steam. This waste heat is typically directly discharged into the atmosphere in current technology, resulting in a waste of energy. Meanwhile, the heating system inside the drying room, such as electric heating elements or gas-fired hot air furnaces, consumes a large amount of additional energy to heat the air to meet the high-temperature environment required for drying. The existing drying room's closed duct design fails to effectively integrate and utilize these waste heat and steam sources from the production workshop, leading to high energy consumption and failing to meet the current requirements of green and energy-saving modern production.

[0003] Therefore, it is necessary to provide a drying room that can simultaneously dry scalded skin and scalded skin blocks, and can effectively reduce the heating energy consumption of the fan by connecting the waste steam from the production steam radiator to the steam radiator of the drying room through a pipe. Utility Model Content

[0004] The purpose of this invention is to provide a drying room that can simultaneously dry hot skin and hot skin blocks, and can effectively reduce the energy consumption of the fan heating.

[0005] According to one aspect of this application, a drying room is provided, disposed next to the scalding production room, the drying room comprising: The first fan unit has a first drying chamber formed on the air outlet side and a first air inlet chamber formed on the air inlet side; The second fan unit is arranged adjacent to the first fan unit. The air outlet side of the second fan unit forms a second drying chamber adjacent to the first drying chamber, and the air inlet side is connected to the first air inlet chamber. The third fan unit is arranged opposite to the first fan unit and the second fan unit. The air outlet side of the third fan unit forms a third drying chamber adjacent to the second drying chamber and located on the side of the second drying chamber away from the first drying chamber. The air inlet side forms a second air inlet chamber adjacent to the second drying chamber. The second air inlet chamber is separated from the second drying chamber by a ventilated safety fence. A steam radiator is fixedly installed in the first air inlet chamber and connected to the production room pipes and fixedly connected to the wall of the drying room. One side of the steam radiator is located in the first air inlet chamber and the other side is located in the production room. The first fan unit has three fans, and the second and third fan units have nine fans. The steam in the production room heats the air in the first air inlet chamber after passing through the steam radiator. The heated air is then blown into the first and second drying chambers by the first and second fan units to dry the scalded skin blocks in the first drying chamber and the scalded skin in the second drying chamber, respectively. The heated air in the first and second drying chambers passes through the safety fence into the second air inlet chamber and is then blown into the third drying chamber by the third fan unit to form a second air volume of hot air, thereby creating a hot air circulation and heating the scalded skin shreds in the third drying chamber.

[0006] More preferably, the first air volume is denoted as F1, and the second air volume is denoted as F2, satisfying the following relationship: F1 < F2.

[0007] More preferably, the drying room further includes: A drying rack, wherein several of the drying racks are respectively placed in the first drying chamber, the second drying chamber and the third drying chamber; The integrated exhaust and dehumidification unit is fixedly connected to the third drying chamber and its side is connected to the side of the first air inlet chamber away from the third fan unit. The air inlet side of the integrated exhaust and dehumidification unit is located in the third drying chamber to absorb humid heated gas, and the air inlet side of the integrated exhaust and dehumidification unit is located in the first air inlet chamber to discharge dry gas heated in the first air inlet chamber. During the drying process in the drying room, at least one drying rack is placed in each of the first drying chamber, the second drying chamber, and the third drying chamber. The drying rack in the first drying chamber holds the hot-scalded dough pieces, while the drying racks in the second and third drying chambers hold the hot-scalded dough pieces.

[0008] More preferably, the drying rack includes a frame and a plurality of side frames fixedly connected to the frame; Viewed horizontally, the drying rack has 16 sets of side frames in the vertical direction, and the distance between each set of side frames is denoted as D, satisfying the following relationship: D = 13cm, where cm is a unit of length.

[0009] More preferably, the drying rack further includes: A drying tray is placed on the side frame. The drying tray consists of a frame around the perimeter of the tray surface and a mesh layer between the frames. The casters are rotatably connected to the frame. The casters are located between the frame and the ground to move the drying rack.

[0010] More preferably, the height of the drying rack is denoted as H1, and the height of the drying chamber is denoted as H2, satisfying the following relationship: H1 = 2310cm; H2 = 245cm; Where cm is a unit of length, centimeter.

[0011] More preferably, the length of the drying rack is denoted as L1, and the width is denoted as W1, satisfying the following relationship: L1 = 180cm; W1 = 110cm; Where cm is a unit of length, centimeter.

[0012] More preferably, the length of the drying tray is denoted as L2, and the width is denoted as W2, satisfying the following relationship: L2 = 110cm; W2 = 85cm; Where cm is a unit of length, centimeter.

[0013] More preferably, when viewed horizontally, at most two drying trays are placed on each side shelf of the drying rack.

[0014] More preferably, when viewed along a direction parallel to the surface of the drying tray, after placing the hot-skinned skin or hot-skinned skin block on each of the mesh layers, a flow space is formed between the mesh layer of any of the drying trays on the same drying rack and the hot-skinned skin or hot-skinned skin block on the mesh layer directly below. The hot air in the first drying chamber, the second drying chamber, and the third drying chamber passes through the flow space to dry the hot-skinned skin or hot-skinned skin block below the flow space, and passes through the mesh layer above to dry the bottom of the hot-skinned skin or hot-skinned skin block in the upper drying tray.

[0015] This utility model has the following beneficial effects: Heated air is blown into the first drying chamber by a first fan unit, generating a small volume of hot air that dries the hot-pressed sheets. A second and third fan unit then blows larger volumes of hot air into the second and third drying chambers, respectively, to dry the sheets. This allows the drying chamber to utilize the varying number of fans to simultaneously blow different volumes of hot air into different drying chambers, catering to both sheets requiring higher and lower airflow volumes. Furthermore, steam from the production chamber is used to heat the air in the first air inlet chamber via a steam radiator. This allows the first fan unit to blow the preheated air into the drying chamber, while a third fan unit, positioned opposite the outlet side, circulates the hot air within the drying chamber, effectively reducing the heating energy consumption of the heating elements in the fans. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0017] Figure 1 This is a three-dimensional structural diagram of the drying room and production room described in one embodiment of this application; Figure 2 This is a schematic diagram of the floor plan of the drying room and production room described in one embodiment of this application; Figure 3 This is a schematic diagram of the planar structure of the drying rack in the drying room according to one embodiment of this application; Figure 4 This is a schematic plan view of the drying rack in the drying room as described in one embodiment of this application, viewed from a top-down direction. Figure 5 For the Figure 3 Enlarged view of point A in the middle; Figure 6This is a schematic diagram of the plan structure of the drying room in one embodiment of this application, in which the drying rack is placed; Explanation of reference numerals: 100, Drying room; 10, First fan unit; 11, First drying chamber; 12, First air inlet chamber; 20, Second fan unit; 21, Second drying chamber; 30, Third fan unit; 31, Third drying chamber; 32, Second air inlet chamber; 33, Safety fence; 40, Steam radiator; 50, Fan; 60, Drying rack; 61, Frame; 62, Side frame; 63, Drying tray; 63A, Frame body; 63B, Mesh surface; 64, Casters; 70, Integrated exhaust and desiccant machine; 80, Circulation space; 200, Production room. Detailed Implementation

[0018] To facilitate understanding of this application, a more complete description will be provided below with reference to the accompanying drawings. Preferred embodiments of this application are shown in the drawings. However, this application can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of the disclosure of this application.

[0019] It should be noted that when a component is said to be "fixed to" another component, it can be directly attached to the other component or there may be an intervening component. When a component is said to be "connected to" another component, it can be directly connected to the other component or there may be an intervening component. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0020] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the specification of this application is for the purpose of describing particular embodiments only and is not intended to be limiting of this application. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0021] Please refer to Figure 1 - Figure 6 One embodiment of this application provides a drying room 100, which is set next to the scalding production room 200. The drying room 100 includes: a first fan unit 10, a second fan unit 20, a third fan unit 30 and a steam radiator 40.

[0022] The first fan unit 10 has a first drying chamber 11 formed on its outlet side and a first air inlet chamber 12 formed on its inlet side. The second fan unit 20 is disposed adjacent to the first fan unit 10. The outlet side of the second fan unit 20 has a second drying chamber 21 adjacent to the first drying chamber 11, and its inlet side is connected to the first air inlet chamber 12. The third fan unit 30 is disposed opposite to the first fan unit 10 and the second fan unit 20. The outlet side of the third fan unit 30 has a third drying chamber 31 adjacent to the second drying chamber 21 and located on the side of the second drying chamber 21 away from the first drying chamber 11. Its inlet side has a second air inlet chamber 32 adjacent to the second drying chamber 21, and the second air inlet chamber 32 is separated from the second drying chamber 21 by a ventilated safety fence 33. The steam radiator is fixedly installed in the first air inlet chamber 12 and is fixedly connected to the wall of the drying room 100 by the pipe connection 40 of the production room 200. One side of the steam radiator 40 is located in the first air inlet chamber 12 and the other side is located in the production room 200. The first fan unit 10 is equipped with three fans 50, and the second fan unit 20 and the third fan unit 30 are equipped with nine fans 50. The steam in the production room 200 heats the air in the first air inlet chamber 12 after passing through the steam radiator 40. The heated air passes through the first fan unit 10 and the second fan unit 20 to form hot air with a first air volume and hot air with a second air volume, respectively, and blows it towards the first drying chamber 11 and the second drying chamber 21 to dry the scalded skin blocks in the first drying chamber 11 and the scalded skin in the second drying chamber 21, respectively. The heated air in the first drying chamber 11 and the second drying chamber 21 passes through the safety fence 33 and enters the second air inlet chamber 32. It is then blown towards the third drying chamber 31 by the third fan unit 30 to form hot air with a second air volume, thereby forming a hot air circulation and heating the scalded skin shreds in the third drying chamber 31.

[0023] The drying room 100 is located adjacent to the hot-skin production room 200 to facilitate the utilization of waste heat from steam generated during production. The interior of the drying room 100 is physically partitioned, forming clearly defined functional zones. Within the drying room 100, there are sequentially arranged a first air inlet chamber 12, a first drying chamber 11, a second drying chamber 21, a second air inlet chamber 32, and a third drying chamber 31. A wall separates the space between the first drying chamber 11 and the second drying chamber 21. A separate door is located at the end of the first drying chamber 11 furthest from the first fan unit 10, allowing the drying rack 60 carrying the hot-skin pieces to be pulled out of the drying room 100 beforehand, as the drying time for the hot-skin pieces is relatively short. A wall separates a portion of the area between the first drying chamber 11 and the second drying chamber 21, while a walkway is provided near the doorway to allow workers to move between the two chambers. Between the second drying chamber 21 and the third drying chamber 31, there is a sliding door that can be opened from the middle. When the sliding door is open, the operator can place the drying rack 60 from the second drying chamber 21 into the third drying chamber 31 through the sliding door. These chambers are arranged adjacently and separated from each other by partition walls or functional fences. The first air inlet chamber 12 is the main hot air preparation area of ​​the entire drying room 100. On the inner side of the wall adjacent to the production room 200, a steam radiator 40 is fixedly installed. One side of the fins of the steam radiator 40 is connected to the production room 200 through pipes and directly contacts the high-temperature steam generated during the steaming of the scalded skin. The other side of the fins is exposed inside the first air inlet chamber 12. When the steam heat from the production room 200 is transferred to the steam radiator 40, the part exposed inside the first air inlet chamber 12 becomes a large heat exchange surface, continuously heating the air in the first air inlet chamber 12, thereby achieving preheating of the air in the first air inlet chamber 12 without the need for electricity or gas. The first fan unit 10 is installed between the first air inlet chamber 12 and the first drying chamber 11. This fan unit 50 integrates three fans 50, with their air inlet side facing the first air inlet chamber 12 and their air outlet side facing the first drying chamber 11. During operation, the fans 50 draw in preheated hot air from the first air inlet chamber 12 and blow it into the first drying chamber 11 at a first air volume. Because the hot-skinned pieces are small and easy to dry, three fans 50 are used here to provide a drying environment with a smaller air volume and a gentler airflow, specifically for drying hot-skinned pieces. The second fan unit 20 is installed adjacent to the first fan unit 10, also located on the partition wall between the first air inlet chamber 12 and the second drying chamber 21. The second fan unit 20 integrates nine fans 50, with its air inlet side also connected to the first air inlet chamber 12 and its air outlet side facing the second drying chamber 21. It draws in preheated hot air from the same first air inlet chamber 12, but blows it into the second drying chamber 21 at a second air volume greater than the first air volume. This high-volume airflow design is intended to meet the drying needs of bundled scalded skins. The powerful airflow can effectively penetrate the scalded skin bundles and remove internal moisture.The third fan unit 30 is not installed adjacent to the second fan unit 20, but rather on the opposite side of the drying chamber 100, near the door, opposite the first fan unit 10 and the second fan unit 20. The outlet side of the third fan unit 30 is also opposite to the outlet sides of the first fan unit 10 and the second fan unit 20, aiming to create convection within the drying chamber 100 and accelerate the heating and circulation of the air. The inlet side of the third fan unit 30 is the second air inlet chamber 32. A safety grille 33, allowing air to pass through, is installed near the second drying chamber 21 to capture the hot air flowing in the second drying chamber 21 and the second dryer. The third fan unit 30 is installed between the second air inlet chamber 32 and the third drying chamber 31. This fan group also integrates nine fans 50, with their inlet side facing the second air inlet chamber 32 and their outlet side facing the third drying chamber 31. The function of the third fan unit 30 is to draw in the used waste heat air collected in the second air inlet chamber 32 and blow it into the third drying chamber 31 with a larger second air volume, realizing the internal circulation of hot air within the drying chamber 100. The integration of the steam radiator 40 with the first air inlet chamber 12 in the drying chamber 100 directly utilizes the production waste heat in the production room 200, transforming the main heat source of the drying chamber 100 from expensive electricity or gas into free industrial waste heat, fundamentally achieving significant energy savings. The first fan unit 10 and the second fan unit 20 use different numbers of fans 50, simply creating two drying environments with different air volumes to adapt to the respective drying requirements of hot skin and hot skin blocks, ensuring the drying quality of both products. The design of the third fan unit 30 and the second air inlet chamber 32 forms a stable airflow direction in the drying chamber 100, enhancing the fluidity of the airflow throughout the system, making the heat distribution more uniform, and improving the air circulation heating efficiency.

[0024] More preferably, the first air volume is denoted as F1, and the second air volume is denoted as F2, satisfying the following relationship: F1 < F2.

[0025] The scalded rice noodle sheets are small, dispersed pieces of rice noodle. They are characterized by their light weight per unit, loose overall packing, large surface area exposed to air, but weak binding force. If a large second airflow is used for drying, the high-speed airflow will easily disperse the stacked sheets, causing product displacement, uneven packing, or even blowing them off the drying tray 63, resulting in waste and contamination. Furthermore, excessive airflow will too quickly remove surface moisture from the sheets, potentially causing them to dry and harden rapidly, forming a hard rice noodle sheet, affecting food quality. Therefore, the first drying chamber 11 requires a smaller, gentler airflow, sufficient to remove surface moisture without affecting the quality of the sheets. The scalded rice noodles are continuous, bundled or rolled rice noodles with a compact, thick, and concentrated structure. This structure makes it difficult for airflow to penetrate. If a smaller first airflow is used, the airflow can only act on the surface of the bundles, and internal moisture cannot be effectively removed, easily leading to incomplete drying, uneven drying inside and out, and even mold growth during storage. Therefore, the second drying chamber 21 requires a second airflow, the purpose of which is to generate sufficient penetrating force. Strong airflow can penetrate the gaps in the scalded bundles and act directly on the interior, ensuring that the overall moisture is evaporated and discharged evenly and efficiently, thereby achieving thorough and uniform drying.

[0026] More preferably, the drying room 100 also includes a drying rack 60 and an integrated exhaust fan.

[0027] Several drying racks 60 are respectively placed in the first drying chamber 11, the second drying chamber 21, and the third drying chamber 31. The integrated exhaust and desiccant 70 is fixedly connected to the side of the third drying chamber 31 away from the third fan unit 30, and its side is connected to the first air inlet chamber 12. The air inlet side of the integrated exhaust and desiccant 70 is located in the third drying chamber 31 to absorb humid heated gas, and the air inlet side of the integrated exhaust and desiccant 70 is located in the first air inlet chamber 12 to discharge dry gas heated in the first air inlet chamber 12. During drying in the drying room 100, at least one drying rack 60 is placed in each of the first drying chamber 11, the second drying chamber 21, and the third drying chamber 31. The drying rack 60 in the first drying chamber 11 holds the hot-skinning blocks, and the drying racks 60 in the second drying chamber 21 and the third drying chamber 31 hold the hot-skinning blocks.

[0028] Multiple identical drying racks 60 are placed inside the first drying chamber 11, the second drying chamber 21, and the third drying chamber 31, respectively. These drying racks 60 serve as carriers for hot-skinned sheets and hot-skinned sheet blocks. The drying racks 60 placed in the first drying chamber 11 are specifically designed to hold hot-skinned sheet blocks requiring low-volume drying. The drying racks 60 placed in the second drying chamber 21 and the third drying chamber 31 are used to hold bundled hot-skinned sheets requiring high-volume drying. This arrangement allows the three drying chambers to coordinate their respective fan 50 systems to perform targeted drying processes based on the type of products placed inside. Part of the exhaust fan 70 is fixedly installed inside the third drying chamber 31, while part is installed outside the drying chamber 100. The air inlet of the exhaust fan 70 is located inside the third drying chamber 31, allowing direct intake of utilized, high-humidity hot air from this chamber. Its outlet is directly connected to the first air inlet chamber 12. During operation of the drying chamber 100, the exhaust fan 70 draws in humid hot air from the third drying chamber 31. Inside the machine, air passes through an evaporator, where water vapor is condensed into water, resulting in dry air. This dry air then flows through a condenser inside the machine, where it absorbs heat released by the condenser and is heated to become dry, hot air. Finally, this dry, hot air produced by the integrated exhaust and desiccant 70 is forced into the first air inlet chamber 12 from its supply side. Here, it mixes with the main air preheated by the steam radiator 40, serving as the air source for the first fan unit 10 and the second fan unit 20.

[0029] More preferably, the drying rack 60 includes a frame 61 and a plurality of side frames 62 fixedly connected to the frame 61. Viewed horizontally, the drying rack 60 has 16 sets of side frames 62 in the vertical direction, and the distance between each set of side frames 62 is denoted as D, satisfying the following relationship: D = 13cm, where cm is a unit of length.

[0030] The side racks 62 on the drying rack 60 are arranged sequentially in the vertical direction of the frame 61, forming a support structure for holding the drying trays 63. Viewed horizontally, the entire drying rack 60 has a total of 16 sets of side racks 62 in the vertical direction, providing 16 independent shelves for placing the drying trays 63. The uniform shelf height creates multiple flat rectangular air ducts of consistent height within the drying rack 60. When hot air is blown out from the outlet side of the fan 50 and flows horizontally through these interlayer spaces, the uniform flow channel cross-section helps to form a stable and uniform airflow field. This avoids localized excessively high or low wind speeds caused by varying shelf heights, ensuring that the hot skin or hot skin blocks placed on each side rack 62 receive essentially uniform airflow, achieving uniform drying and effectively preventing problems of incomplete or over-drying in certain areas.

[0031] More preferably, the drying rack 60 further includes a drying tray 63 and casters 64.

[0032] The drying tray 63 is placed on the side frame 62. The drying tray 63 consists of a frame 63A around the perimeter of the tray surface and a mesh layer located between the frame 63A. The casters 64 are rotatably connected to the frame 61. The casters 64 are located between the frame 61 and the ground to move the drying rack 60.

[0033] The drying tray 63 is a container that directly supports the scalded skin or scalded skin blocks. It is stably placed on the side frame 62 of the drying rack 60 via its surrounding frame 63A. The tray surface structure of the drying tray 63 is not solid, but is composed of a mesh layer located between the frames 63A. This mesh layer structure ensures that the tray has sufficient support strength while possessing excellent permeability. At the bottom of the drying rack 60, multiple casters 64 are installed. These casters 64 are reliably rotatably connected to the bottom frame of the rack 61 via wheel frames and connectors. Each caster 64 collectively supports the weight of the upper structure and allows the operator to easily move the drying rack 60 in any direction by applying a pushing force, facilitating its movement into or out of the drying chambers.

[0034] More preferably, the height of the drying rack 60 is denoted as H1, and the height of the drying chamber 100 is denoted as H2, satisfying the following relationship: H1 = 230cm.

[0035] H2 = 245cm, where cm is a unit of length.

[0036] The height of the drying rack 60 is based on ergonomic principles and is set as the maximum safe height for manual operation. For an operator of average height, the highest height that can be comfortably and safely reached with their arm raised vertically is approximately between 220cm and 230cm. Setting the height of the drying rack 60 to 230cm means that the drying tray 63 placed on the top shelf 62 is still within the operator's reach, allowing for independent placement and removal of the top drying tray 63. The height of the drying room 100, based on the 230cm height of the drying rack 60, provides additional space for the installation of air pipes and auxiliary dehumidification devices, and increases airflow at the top level.

[0037] More preferably, the length of the drying rack 60 is denoted as L1, and the width is denoted as W1, satisfying the following relationship: L1 = 180cm; W1 = 110cm, where cm is the unit of length.

[0038] The length and width of the drying rack 60 are designed to accommodate the spatial dimensions of each drying chamber in the drying room 100, and also to facilitate the placement of two appropriately sized drying trays 63 on the first-layer drying rack 60 by the operator.

[0039] More preferably, the length of the drying tray 63 is denoted as L2, and the width is denoted as W2, satisfying the following relationship: L2 = 110cm.

[0040] W2 = 85cm, where cm is the unit of length.

[0041] The width of the drying tray 63 is equivalent to the maximum width that a standard-height adult can comfortably grip with both hands when their arms are naturally outstretched. When the drying tray 63 contains wet, heavy scalded skin or scalded skin blocks, its total weight is considerable. Controlling this width to 85cm ensures that most operators can safely and effortlessly lift and move the drying tray 63 independently, effectively preventing unstable grip, slippage, or muscle strain caused by an excessively wide tray. The length of the drying tray 63, 110cm, is also typically within the range of an operator's outstretched arms, allowing for a stable grip with both hands. Furthermore, the 110cm length matches the width of the drying rack 60, enabling the drying tray 63 to be effectively placed along the width of the drying rack 60.

[0042] More preferably, when viewed in the horizontal direction, at most two drying trays 63 are placed on each layer of the side rack 62 of the drying rack 60.

[0043] Each drying rack 60, with 16 vertical side shelves 62, can accommodate up to 32 drying trays 63 fully loaded with hot-pressed dough pieces or hot-pressed dough. One drying rack 60 can simultaneously support hundreds or thousands of hot-pressed dough pieces or hot-pressed dough.

[0044] More preferably, when viewed along a direction parallel to the surface of the drying tray 63, after placing the hot-skinned skin or hot-skinned skin blocks on each of the mesh layers, a flow space 80 is formed between the mesh layer of any of the drying trays 63 on the same drying rack 60 and the hot-skinned skin or hot-skinned skin blocks on the vertically lower mesh layer. The hot air in the first drying chamber 11, the second drying chamber 21, and the third drying chamber 31 passes through the flow space 80 to dry the hot-skinned skin or hot-skinned skin blocks below the flow space 80, and passes through the upper mesh layer to dry the bottom of the hot-skinned skin or the bottom of the hot-skinned skin blocks in the upper drying tray 63.

[0045] The drying tray 63 is not airtight; instead, it is constructed of a sturdy yet permeable mesh layer, which is surrounded and secured by a frame 63A around its perimeter. When the drying tray 63 is placed on the side racks 62 of the drying rack 60, and the hot skin or hot skin blocks are supported on its mesh layer, a layered space structure is formed within the entire drying rack 60. Viewed parallel to the surface of the drying tray 63, a flat, horizontal flow space 80 is formed between the bottom of the mesh layer of any upper drying tray 63 and the top surface of the hot skin or hot skin blocks held in the adjacent lower drying tray 63. The height of this flow space 80 is determined by subtracting the thickness of the drying tray frame 63A and the thickness of the material accumulation from the spacing between the side racks 62. Hot air, after being delivered into each drying chamber from each of the fan sets 50, primarily flows horizontally through these continuous flow spaces 80 existing between each layer. When hot air flows horizontally through the circulation space 80, its airflow directly contacts and washes the top surface of the material in the lower drying tray 63. Through convection heat transfer, it efficiently removes surface moisture, achieving primary drying. Since the upper drying tray 63 has a permeable mesh structure, some of the hot air, while flowing through the circulation space 80, penetrates the mesh upwards. This penetrating airflow directly acts on the bottom of the material in the upper drying tray 63, effectively drying it.

[0046] In this way, heated air is blown into the first drying chamber 11 by the first fan unit 10 to generate a small volume of hot air, which dries the hot skin pieces. The second and third fans 50 then generate a larger volume of hot air, which dries the second and third drying chambers 21 and 31 respectively, drying the hot skin pieces. This allows the drying chamber 100 to utilize the different numbers of fans 50 to simultaneously blow different volumes of hot air into different drying chambers, thus drying both pieces requiring larger and smaller air volumes at the same time. Furthermore, the air in the first air inlet chamber 12 is heated by steam from the production chamber 200 after contacting the steam radiator 40. This allows the first fan unit 10 to blow the preheated air from the first air inlet chamber 12 into the drying chamber 100. The third fan unit 30, positioned opposite each other on the air outlet side, circulates the hot air within the drying chamber 100, effectively reducing the heating energy consumption of the heating elements in the fans 50.

[0047] The embodiments described above are merely examples of several implementation methods of this application, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of this patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these modifications and improvements all fall within the protection scope of this application.

Claims

1. A drying room provided next to a production room for steaming and scalding skins, characterized in that, The drying room includes: The first fan unit has a first drying chamber formed on the air outlet side and a first air inlet chamber formed on the air inlet side; The second fan unit is arranged adjacent to the first fan unit. The air outlet side of the second fan unit forms a second drying chamber adjacent to the first drying chamber, and the air inlet side is connected to the first air inlet chamber. The third fan unit is arranged opposite to the first fan unit and the second fan unit. The air outlet side of the third fan unit forms a third drying chamber adjacent to the second drying chamber and located on the side of the second drying chamber away from the first drying chamber. The air inlet side forms a second air inlet chamber adjacent to the second drying chamber. The second air inlet chamber is separated from the second drying chamber by a ventilated safety fence. A steam radiator is fixedly installed in the first air inlet chamber and connected to the wall of the drying room via the production room pipes. One side of the steam radiator is located in the first air inlet chamber, and the other side is located in the production room. The first fan unit has three fans, and the second and third fan units have nine fans. The steam in the production room heats the air in the first air inlet chamber after passing through the steam radiator. The heated air is then blown into the first and second drying chambers by the first and second fan units to dry the scalded skin blocks in the first drying chamber and the scalded skin in the second drying chamber, respectively. The heated air in the first and second drying chambers passes through the safety fence into the second air inlet chamber and is then blown into the third drying chamber by the third fan unit to form a second air volume of hot air, thereby creating a hot air circulation and heating the scalded skin shreds in the third drying chamber.

2. A drying chamber according to claim 1, characterized in that The first air volume is denoted as F1, and the second air volume is denoted as F2, satisfying the following relationship: F1 < F2.

3. The drying chamber according to claim 1, characterized in that The drying room also includes: A drying rack, wherein several of the drying racks are respectively placed in the first drying chamber, the second drying chamber and the third drying chamber; The integrated dehumidifier and exhaust unit is fixedly connected to the side of the third drying chamber away from the third fan unit, and its side is connected to the first air inlet chamber. The air inlet side of the integrated dehumidifier and exhaust unit is located in the third drying chamber to absorb humid heated gas, and the air inlet side of the integrated dehumidifier and exhaust unit is located in the first air inlet chamber to discharge dry gas heated in the first air inlet chamber. During the drying process in the drying room, at least one drying rack is placed in each of the first drying chamber, the second drying chamber, and the third drying chamber. The drying rack in the first drying chamber holds the hot-scalded dough pieces, while the drying racks in the second and third drying chambers hold the hot-scalded dough pieces.

4. A drying chamber according to claim 3, characterised in that The drying rack includes a frame and several sets of side frames fixedly connected to the frame; Viewed horizontally, the drying rack has 16 sets of side frames in the vertical direction, and the distance between each set of side frames is denoted as D, satisfying the following relationship: D = 13cm, where cm is a unit of length.

5. A drying chamber according to claim 4, characterised in that The drying rack also includes: A drying tray is placed on the side frame. The drying tray consists of a frame around the perimeter of the tray surface and a mesh layer between the frames. The casters are rotatably connected to the frame. The casters are located between the frame and the ground to move the drying rack.

6. A drying chamber according to claim 3, wherein The height of the drying rack is denoted as H1, and the height of the drying chamber is denoted as H2, satisfying the following relationship: H1 = 2310cm; H2 = 245cm; Where cm is a unit of length, centimeter.

7. A drying chamber according to claim 3, wherein The length of the drying rack is denoted as L1, and the width is denoted as W1, satisfying the following relationship: L1 = 180cm; W1 = 110cm; Where cm is a unit of length, centimeter.

8. A drying chamber according to claim 5, characterized in that The length of the drying tray is denoted as L2, and the width is denoted as W2, satisfying the following relationship: L2 = 110cm; W2 = 85cm; Where cm is a unit of length, centimeter.

9. A drying chamber according to claim 5, characterized in that Viewed horizontally, each layer of the drying rack has at most two drying trays on its side racks.

10. The drying chamber according to claim 5, characterized in that When viewed along a direction parallel to the surface of the drying tray, after placing the hot-skinned skin or hot-skinned skin blocks on each of the mesh layers, a flow space is formed between the mesh layer of any of the drying trays on the same drying rack and the hot-skinned skin or hot-skinned skin blocks on the mesh layer directly below. The hot air in the first drying chamber, the second drying chamber, and the third drying chamber passes through the flow space to dry the hot-skinned skin or hot-skinned skin blocks below the flow space, and passes through the mesh layer above to dry the bottom of the hot-skinned skin or the bottom of the hot-skinned skin blocks in the upper drying tray.

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