CN219229009U

CN219229009U - Constant temperature drying cabinet

Info

Publication number: CN219229009U
Application number: CN202223300563.1U
Authority: CN
Inventors: 张鹏飞; 苗芊; 杨荣超; 慎龙舞; 曾波; 张勍; 于千源; 史占东; 赵航; 范黎; 李栋; 何建飞; 李轶; 宁英豪
Original assignee: ZHENGZHOU JIADE ELECTROMECHANICAL TECHNOLOGY CO LTD; Zhengzhou Tobacco Research Institute of CNTC
Current assignee: ZHENGZHOU JIADE ELECTROMECHANICAL TECHNOLOGY CO LTD; Zhengzhou Tobacco Research Institute of CNTC
Priority date: 2022-12-09
Filing date: 2022-12-09
Publication date: 2023-06-23
Anticipated expiration: 2032-12-09

Abstract

The utility model provides a constant-temperature drying oven which comprises an inner bin forming a drying cavity and a plurality of groups of air supply units arranged on the inner bin, wherein the plurality of groups of air supply units are arranged in a stacked mode, and each group of air supply units comprises a ventilating pipeline detachably arranged on the wall of the inner bin, a heating unit arranged in the ventilating pipeline and a fan assembly arranged in the ventilating pipeline. Each group of air supply units in the constant temperature drying oven can be detachably mounted on the inner bin, so that the constant temperature drying oven is easy to detachably mount, is convenient to maintain, and is beneficial to reducing maintenance cost. In addition, the air supply units of the constant temperature drying oven are divided into a plurality of groups, so that regional air supply can be realized, and the uniformity of the temperature distribution of the inner bin is improved; meanwhile, the heat efficiency of the air supply unit can be improved, and the energy consumption is reduced.

Description

Constant temperature drying cabinet

Technical Field

The utility model relates to the technical field of tobacco production, in particular to a constant-temperature drying oven.

Background

The water content is an important index in the processing of tobacco and tobacco products. For the same kind of cigarettes, the water content is different, and the feeling during smoking is also different. In the technological processes of threshing and redrying, tobacco storage and transportation, alcoholization, shredding, rolling and the like, moisture directly affects the consumption, physical characteristics and internal sensory quality of tobacco and tobacco products in the processing process. The tobacco industry mainly adopts a constant temperature drying oven to measure the moisture of tobacco and tobacco products, and the constant temperature drying oven is an important metering device in the processing process of the tobacco and the tobacco products. Therefore, the accuracy of the measurement result of the constant temperature drying oven for cigarettes plays an important role in the tobacco industry.

The design structure of the existing drying oven is different, but the heating unit, the fan and the like are all integrally designed, when one element fails, the whole drying oven needs to be disassembled, so that the drying oven is not easy to disassemble, and the maintenance cost is increased. In addition, existing drying cabinets typically have only one set of heating units and fans, which makes the temperature distribution within the cabinet uneven.

Disclosure of Invention

In view of the foregoing, it is clearly desirable to provide a constant temperature drying oven to solve the above problems.

Specifically, the constant temperature drying cabinet comprises an inner bin forming a drying cavity and a plurality of groups of air supply units arranged on the inner bin, wherein the air supply units are arranged in a stacked mode, and each group of air supply units comprises a ventilating pipeline detachably arranged on the wall of the inner bin, a heating unit arranged in the ventilating pipeline and a fan assembly arranged in the ventilating pipeline.

Based on the constant temperature drying box, the constant temperature drying box further comprises a controller which is respectively connected with a plurality of groups of air supply units and can control each group of air supply units to independently operate; thus, the temperature distribution in the drying cavity can be controlled accurately.

Based on the above, the ventilation pipeline comprises a rear ventilation pipe and side ventilation pipes positioned at two sides of the rear ventilation pipe, and the side ventilation pipes are arranged on the inner bin wall; the fan assembly comprises a fan motor arranged in the center outside the corresponding rear ventilation pipeline and a wind wheel arranged in the rear ventilation pipeline, and the heating unit is arranged at the joint of the rear ventilation pipeline and the side ventilation pipeline.

Based on the constant temperature drying box, the constant temperature drying box is further provided with a moisture discharging pipe, each group of air supply units is provided with a moisture discharging opening, the moisture discharging openings are formed in the ventilating pipeline, and the moisture discharging pipe is communicated with the ventilating pipeline through the moisture discharging openings; thus, the constant temperature drying oven can timely discharge moisture.

Based on the above, the side ventilation pipe is internally provided with an air regulating plate and a rotating shaft penetrating through the center of the air regulating plate, and the air regulating plate can rotate around the rotating shaft; the angle between the air regulating plate and the corresponding inner bin plate can be adjusted, so that air supply is more stable.

Based on the above, in the adjacent air supply units, the adjacent rotating shafts are positioned in the same axial extending direction and are connected with the oil-free bushing through the oil-free bushing sealing gasket; thus, the constant temperature drying oven is easy to detach and install.

Wherein the heating unit is an electric heating element, a microwave heating element or an electromagnetic heating element. Preferably, the heating unit is an electrical heating element, for example an electrical heating rod.

Based on the above, interior storehouse by left interior storehouse board, back interior storehouse board, right interior storehouse board, go up interior storehouse board and lower interior storehouse board formation stoving chamber and this stoving chamber open setting, left interior storehouse board and right interior storehouse board symmetry set up and install the side ventilation pipe, be provided with the ventilation hole array in left interior storehouse board and the right on the storehouse board, this ventilation hole array is just to setting up with the side ventilation pipe that corresponds.

Based on the above, the vent hole array is composed of a plurality of rows of vent holes, and the aperture of each row of vent holes is gradually increased along the direction from back to front so as to ensure the uniformity of the temperature distribution of the inner bin.

Based on the above, the center of the rear inner bin plate is provided with a ventilation plate corresponding to the wind wheel, so as to improve the heat utilization rate of the constant temperature drying oven.

Based on the above, a plurality of inner bin partitions are installed in the inner bin, and two ends of each inner bin partition are respectively installed at the intervals of adjacent vent hole arrays on the left inner bin plate and the right inner bin plate; therefore, the articles to be dried can be placed at any place, and the efficiency and the temperature distribution of air supply to the inner bin are not affected.

Based on the constant temperature drying box, the constant temperature drying box further comprises a plurality of temperature sensors arranged in the inner bin so as to monitor the temperature in the drying cavity in real time and ensure uniform temperature distribution in the constant temperature drying box.

Based on the constant temperature drying oven, the temperature sensor comprises a central temperature sensor for detecting the central temperature of the drying cavity, wherein the central temperature sensor is arranged in a temperature checking pipeline which is arranged on the inner bin and extends into the drying cavity; therefore, the temperature of the central area in the constant temperature drying oven can be conveniently detected and calibrated, and the temperature of the center of the drying cavity can be conveniently controlled.

Based on the above, the adjacent air supply units are sealed by the sealing gasket, so that heat loss is reduced, and heat efficiency is improved.

Based on above-mentioned constant temperature stoving case, it still includes braced frame, interior storehouse and every group air supply unit are installed braced frame is last to guarantee the stability of stoving case.

The utility model also provides a constant temperature drying oven which comprises an inner bin forming a drying cavity and a plurality of ventilation pipelines detachably arranged on the wall of the inner bin, wherein the ventilation pipelines are arranged in a stacked manner, the inner bin comprises a left inner bin plate and a right inner bin plate which are oppositely arranged, a heating unit and a wind wheel are arranged in each ventilation pipeline, and two ends of each ventilation pipeline are respectively detachably arranged on the left inner bin plate and the right inner bin plate.

Based on the constant temperature drying box, the constant temperature drying box further comprises a controller, wherein the controller can independently control the heating unit and the wind wheel in each ventilation pipeline.

Based on the above, a plurality of temperature sensors are installed in the inner bin, and the temperature sensors are connected with the controller.

Therefore, the constant temperature drying box provided by the utility model comprises a plurality of groups of air supply units, and the ventilating pipeline in each group of air supply units is detachably arranged on the inner bin wall, so that the constant temperature drying box is easy to detachably mount, is convenient to maintain, and is beneficial to reducing the maintenance cost. In addition, the air supply units of the constant temperature drying oven are divided into a plurality of groups, so that regional air supply can be realized, and the uniformity of the temperature distribution of the inner bin is improved; meanwhile, the heat efficiency of the air supply unit can be improved, and the energy consumption is reduced.

Drawings

Fig. 1 is an exploded view of a vertical blowing type constant temperature drying oven according to an embodiment of the present utility model.

Fig. 2 is a schematic perspective view illustrating an internal structure of a vertical blowing type constant temperature drying oven according to an embodiment of the present utility model.

Fig. 3 is a schematic structural view of the blower unit shown in fig. 2.

Fig. 4 is a left side view of the internal structure of the vertical blowing type thermostatic drying chamber shown in fig. 2.

Fig. 5 is a plan view showing an internal structure of the vertical blowing type thermostatic drying chamber shown in fig. 2.

Fig. 6 is a schematic structural view of the support structure shown in fig. 1.

Fig. 7 is a schematic structural diagram of an air supply assembly in a vertical air supply type constant temperature drying oven according to a third embodiment of the present utility model.

Fig. 8 is a schematic structural diagram of a left inner bin plate in a vertical air-supplying type constant temperature drying oven according to a fourth embodiment of the present utility model.

Wherein reference numerals in the drawings represent: 1. an inner bin; 11 left inner bin plate; 12. an array of vent holes; 13. a ventilation plate; 14. an inner bin partition; 15. a temperature sensor; 16. a temperature checking pipeline; 2 an air supply unit; 21 a ventilation duct; 22. a heating unit; 23. a fan assembly; 24. a moisture discharging port; 25. a fan motor; 26. a wind wheel; 27. an air adjusting plate; 28. a rotating shaft; 3. a moisture removing pipe; 4. a housing; 42 universal wheels; 44. an electric control device; 5 supporting a frame; 51. an inner bin support frame; 52. a short column; 53. two long upright posts; 54. and a cross beam.

Detailed Description

The technical scheme of the utility model is further described in detail through the following specific embodiments. In the present utility model, the terms "upper", "lower", "left", "right", "front", "rear", and the like merely represent relative positional relationships.

Example 1

Referring to fig. 1 to 6, an embodiment of the present utility model provides a vertical air-supplying type constant temperature drying oven, which includes an inner bin 1 forming a drying cavity and three groups of air-supplying units 2 mounted on the inner bin 1, wherein the three groups of air-supplying units 2 are stacked, and each group of air-supplying units 2 includes an air duct 21 detachably mounted on a wall of the inner bin, a heating unit 22 mounted in the air duct 21, and a fan assembly 23 mounted on the air duct 21. The constant temperature drying oven further comprises a controller which is respectively connected with the three groups of air supply units 2 and can control each group of air supply units 2 to independently operate.

The fan assembly 23 is installed at the center of the ventilation duct 21, and the two heating units 22 are installed in the ventilation duct 21 symmetrically with the fan assembly 23 as a center. The vertical air supply type constant temperature drying oven further comprises two moisture discharging pipes 3 arranged at intervals, a supporting frame 5 used for supporting the inner bin 1 and the air supply units 2, and a shell 4 containing the inner bin 1, three groups of air supply units 2 and the supporting frame 5, wherein the three groups of air supply units 2 are arranged between the inner bin 1 and the shell 4, and the moisture discharging pipes 3 are connected with the air supply units 2 and are positioned between the three groups of air supply units 2 and the shell 4.

The inner bin 1 is mainly an open drying cavity without a front inner bin plate, which is formed by a left inner bin plate 11, a rear inner bin plate, a right inner bin plate, an upper inner bin plate and a lower inner bin plate, and is used for drying tobacco or products thereof. Wherein the inner bin walls are also the panel walls of each of the inner bin panels. Three groups of vent hole arrays 12 are respectively arranged on the left inner bin plate 11 and the right inner bin plate, and each group of vent hole arrays 12 consists of a plurality of rows of vent holes. Three air permeable plates 13 are arranged in the center of the rear inner bin plate. Two inner bin partitions 14 for placing tobacco to be dried or products thereof are movably mounted in the inner bin 1. Two ends of each inner bin partition 14 are respectively mounted on the left inner bin plate 11 and the right inner bin plate, and are spaced from adjacent vent arrays 12. That is, each inner compartment partition 14 is installed between the left inner compartment plate 11 and the right inner compartment plate in a clamped manner, and corresponds to the interval between the adjacent three sets of air supply units 2; therefore, the tobacco to be dried or the products thereof can be placed at any place, and the efficiency and the temperature distribution of air supply to the inner bin are not affected.

The three groups of air supply units 2 are arranged from top to bottom in a stacked mode, and the adjacent air supply units 2 are sealed through sealing gaskets, so that heat loss is reduced, and heat efficiency is improved. Each group of air supply units 2 comprises a ventilating duct 21, two heating units 22, a fan assembly 23 and two moisture discharging ports 24 which are detachably arranged outside the inner bin 1. Wherein, the heating unit 22 and the fan assembly 23 are arranged on the ventilating duct 21, and two ends of each moisture discharging opening 24 are respectively connected with the moisture discharging pipe 3 and the ventilating duct 21.

The ventilating duct 21 is fixed on the inner bin 1 through a sealing ring and a nut. The ventilation duct 21 is integrally C-shaped and mainly comprises two side ventilation ducts and a rear ventilation duct, and the two side ventilation ducts are respectively arranged at two ends of the rear ventilation duct. The two side ventilation pipes are respectively detachably arranged on the left inner bin plate 11 and the right inner bin plate and are opposite to the vent hole arrays on the corresponding inner bin plates. The rear ventilation pipe is detachably arranged on the rear inner bin plate. The two heating units 22 are respectively arranged at the connection parts of the side ventilation pipes and the rear ventilation pipe and are symmetrically arranged; in this embodiment, the heating unit 22 is a constant heating rod, and the heating power of each heating rod is 500-750W.

The fan assembly 23 comprises a fan motor 25 and a wind wheel 26, wherein the fan motor 25 is arranged in the center of the outer surface of a corresponding rear ventilating duct, and the wind wheel 26 is arranged in the rear ventilating duct and corresponds to the ventilation plate 13 on the rear inner bin plate. In this embodiment, the power of each fan motor 25 is 750W, the rotational speed 2850 (rp.m), and the maximum air volume of the wind wheel 26 is 10 m ³ /min (frequency converter adjustable).

Two moisture discharging openings 24 are respectively arranged at the left end and the right end of the rear ventilation pipeline by taking the fan motor 25 as a center. Each moisture discharging pipe 3 is communicated with three moisture discharging ports 24 positioned on the same side. Therefore, not only can the moisture in the inner bin of the constant temperature drying oven be discharged in time, but also the assembly is convenient.

Nine temperature sensors 15 are installed in the inner bin 1. Wherein, two temperature sensors 15 are respectively installed on the left inner bin plate 11, the right inner bin plate, the upper inner bin plate and the lower inner bin plate, the other temperature sensor is a central temperature sensor for detecting the central temperature of the drying cavity, the central temperature sensor is installed in a temperature checking pipeline 16, the temperature checking pipeline 16 sequentially passes through the shell 4, the side ventilation pipe and the left inner bin plate 11, and the temperature checking pipeline 16 is telescopic and can extend to the drying cavity; so, each temperature sensor 15 mutually support to the temperature of real-time supervision thermostated drying cabinet guarantees that above-mentioned temperature distribution in the thermostated drying cabinet is even, does benefit to the accurate control of realization thermostated drying cabinet temperature.

The shell 4 comprises a box door at the front end and a back plate arranged opposite to the box door, wherein the box door is matched with the inner bin 1 to form a closed drying cavity. In this embodiment, the housing 4 is made of a metal plate (Q235) by spraying plastic, and the universal wheel 42 is mounted at the bottom of the housing 4. An insulation layer is arranged on the inner wall of the shell 4, and in the embodiment, the insulation layer is made of aluminum silicate cotton combined polyurethane foaming material.

The supporting frame 5 is formed into a backrest chair type by an inner bin supporting frame 51, two short upright posts 52, two long upright posts 53 and a cross beam 54. The short upright 52 and the long upright 53 are arranged parallel to each other and perpendicular to the inner bin support frame 51. The inner bin supporting frame 51 is composed of four horizontal columns which are sequentially connected end to end, and supported by the short columns 52 and the long columns 53, the two short columns 52 are located at the front end of the inner bin supporting frame 51, the two long columns 53 are located at the rear end of the inner bin supporting frame 51, and the top ends of the short columns 52 are connected with the inner bin supporting frame 51. The cross beam 54 is mounted on top of the long upright 53. The ventilation pipeline 21 is installed above the inner bin supporting frame 51, two ends of the rear ventilation pipeline are respectively installed on the long upright posts 53, and the bottom of the inner bin 1 is fixed on the inner bin supporting frame 51.

An electric control device 44 is also mounted on the upper part of the shell, and the electric control device 44 is specifically mounted on the upper inner bin plate wall. The electronic control unit 44 includes the controller and a display. The controller is mainly used for controlling the switch of the constant temperature drying oven. The display can display parameters such as set temperature, fan rotating speed, air quantity and the like.

After the electric control device 44 is used for starting the constant temperature drying oven, the heating unit 2 starts to heat, the fan motor 25 drives the wind wheel 26 to rotate, negative pressure is carried out on the axial end face of the fan, air is discharged from the left side and the right side, heated by the heating rod in the rear ventilation pipe, flows into the side ventilation pipes on the two sides and the air regulating plate 27, and enters the inner bin 1 through the ventilation holes 14 on the left inner bin plate 11 and the right inner bin plate respectively, so that vertical air supply is realized.

In other embodiments, the constant temperature drying oven may be a horizontal air-supplying drying oven or a vacuum drying oven, and the specific structure and position of the components such as the ventilating duct 21, the heating unit 22, and the motor assembly 23 in the air-supplying unit 2 are closely related to the air-supplying principle.

Example two

The embodiment provides a constant temperature drying cabinet, its structure is basically the same with the constant temperature drying cabinet that embodiment one provided, and main difference is: the main differences are that: the controller in the electronic control unit 44 in this embodiment can control the specific operation state of the oven in addition to the switch of the oven. Specifically, the controller is electrically connected with the heating units 22 and the fan assemblies 23 in each group of air supply units 2, so as to separately control heating parameters such as heating temperature and heating time of each group of air supply units 2 and air supply parameters such as fan rotating speed and air quantity, and meanwhile, the controller is connected with the temperature sensor 15, so that the temperature and humidity of the constant-temperature drying oven are accurately controlled.

Example III

Referring to fig. 7, the present embodiment provides a constant temperature drying oven, which has a structure substantially the same as that of the constant temperature drying oven provided in the second embodiment, and the main differences are as shown in fig. 7. Each group of air supply units 2 in this embodiment further comprises four air regulating plates 27, wherein the air regulating plates 27 are arranged in the side ventilation pipes, and 2 air regulating plates 27 are arranged in each side ventilation pipe side by side. The center of each air regulating plate 27 is sleeved with a rotating shaft 28, the air regulating plates 27 can rotate around the rotating shafts 28, and the angles of the air regulating plates 27 and the corresponding inner bin plates are adjusted, so that air supply is more stable. In the adjacent air supply units 2, the rotating shafts 28 positioned in the same axial extending direction are connected with the oil-free bush through the oil-free bush sealing gasket; thus, the constant temperature drying oven is easy to detach and install.

Example IV

Referring to fig. 8, the present embodiment provides a constant temperature drying oven, which has a structure substantially the same as that of the constant temperature drying oven provided in the third embodiment, and the main differences are as shown in fig. 8. The aperture of each row of vent holes in the vent hole arrays 12 on the left and right

inner warehouse boards

11 and 12 in this embodiment is gradually increased in the back-to-front direction to ensure uniformity of temperature distribution in the inner warehouse.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present utility model and not for limiting the same; while the utility model has been described in detail with reference to the preferred embodiments, those skilled in the art will appreciate that: modifications may be made to the specific embodiments of the present utility model or equivalents may be substituted for part of the technical features thereof; without departing from the spirit of the utility model, it is intended to cover the scope of the utility model as claimed.

Claims

1. A constant temperature drying cabinet, its characterized in that: the drying device comprises an inner bin forming a drying cavity and a plurality of groups of air supply units arranged on the inner bin, wherein the air supply units are arranged in a stacked mode, and each group of air supply units comprises a ventilating duct detachably arranged on the wall of the inner bin, a heating unit arranged in the ventilating duct and a fan assembly arranged in the ventilating duct.

2. A thermostatic drying oven according to claim 1, wherein: the air supply system further comprises a controller which is respectively connected with the plurality of groups of air supply units and can control each group of air supply units to independently operate.

3. A thermostatic drying oven according to claim 1 or 2, wherein: the ventilating duct comprises a rear ventilating duct and side ventilating ducts positioned at two sides of the rear ventilating duct, and the side ventilating ducts are arranged on the inner bin wall; the fan assembly comprises a fan motor arranged in the center outside the corresponding rear ventilation pipeline and a wind wheel arranged in the rear ventilation pipeline, and the heating unit is arranged at the joint of the rear ventilation pipeline and the side ventilation pipeline.

4. A thermostatic drying chamber according to claim 3, wherein: the air conditioner further comprises a moisture discharging pipe, each group of air supply units is provided with a moisture discharging opening, the moisture discharging openings are formed in the ventilating duct, and the moisture discharging pipe is communicated with the ventilating duct through the moisture discharging openings.

5. A thermostatic drying chamber according to claim 3, wherein: the side ventilation pipe is internally provided with an air regulating plate and a rotating shaft penetrating through the center of the air regulating plate, and the air regulating plate can rotate around the rotating shaft.

6. The oven according to claim 5, wherein: in the adjacent air supply units, the adjacent rotating shafts are positioned in the same axial extending direction and are connected with the oil-free bushing through the oil-free bushing sealing gasket.

7. A thermostatic drying chamber according to claim 3, wherein: the inner bin is formed by a left inner bin plate, a rear inner bin plate, a right inner bin plate, an upper inner bin plate and a lower inner bin plate, the drying cavity is arranged in an open mode, the left inner bin plate and the right inner bin plate are symmetrically arranged and are provided with side ventilation pipes, and vent hole arrays are arranged on the left inner bin plate and the right inner bin plate and are opposite to the corresponding side ventilation pipes.

8. The oven according to claim 7, wherein: the vent array is composed of a plurality of rows of vent holes, and the aperture of each row of vent holes is gradually increased along the direction from back to front.

9. The oven according to claim 7, wherein: and the center of the rear inner bin plate is provided with a ventilation plate corresponding to the wind wheel.

10. The oven according to claim 7, wherein: and a plurality of inner bin partition plates are arranged in the inner bin, and two ends of each inner bin partition plate are respectively arranged at the intervals of adjacent vent hole arrays on the left inner bin plate and the right inner bin plate.

11. A thermostatic drying oven according to claim 1 or 2, wherein: it also includes a plurality of temperature sensors mounted in the inner bin.

12. The oven according to claim 11, characterized in that: the temperature sensor comprises a central temperature sensor for detecting the central temperature of the drying cavity, the central temperature sensor is arranged in a temperature checking pipeline which is arranged on the inner bin and extends into the drying cavity.

13. A thermostatic drying oven according to claim 1 or 2, wherein: the adjacent air supply units are sealed by sealing gaskets.

14. A thermostatic drying oven according to claim 1 or 2, wherein: the air supply device also comprises a supporting frame, wherein the inner bin and each group of air supply units are arranged on the supporting frame.

15. A constant temperature drying cabinet, its characterized in that: the drying device comprises an inner bin forming a drying cavity and a plurality of ventilating ducts detachably mounted on the wall of the inner bin, wherein the ventilating ducts are arranged in a stacked mode, the inner bin comprises a left inner bin plate and a right inner bin plate which are oppositely arranged, a heating unit and a wind wheel are mounted in each ventilating duct, and two ends of each ventilating duct are detachably mounted on the left inner bin plate and the right inner bin plate respectively.

16. The oven according to claim 15, characterized in that: it also includes a controller that can individually control the heating unit and the wind wheel in each ventilation duct.

17. The oven according to claim 16, characterized in that: and a plurality of temperature sensors are arranged in the inner bin and are connected with the controller.