Electric heating air blowing assembly for traditional Chinese medicine experiment drying box

Abstract

The electric heating air blowing assembly comprises a hollow rectangular air bellow and a trapezoid hollow air bellow integrally formed on one side of an opening of the hollow rectangular air bellow, and the hollow rectangular air bellow and the trapezoid hollow air bellow are communicated with each other and form an air channel capable of discharging air downwards and discharging air from the side edge. An electric heating air blowing unit is installed in the trapezoid hollow air bellow, and a straight notch air exhaust part is arranged on the lower surface of the hollow rectangular air bellow. The drying box can effectively solve the problems of uneven hot air distribution and poor drying effect existing in a traditional drying box, hot air can be supplied from the upper half portion and the side edge portion of the drying box at the same time, it is ensured that medicinal materials can make contact with the hot air from all directions, and especially for medicinal material layers stacked high or thick, the drying effect is good. Hot air on the side surface and the top can better permeate into each layer of medicinal materials, so that the upper and lower layers of medicinal materials can be uniformly heated by the hot air at the same time.

Description

Technical Field

[0001] This utility model relates to the technical field of auxiliary equipment for traditional Chinese medicine experiments, specifically an electric heating blower assembly for a drying oven for traditional Chinese medicine experiments. Background Technology

[0002] The electric heating fan assembly is the core component of a traditional Chinese medicine (TCM) drying oven. Its main function is to provide a constant and uniform heat source and ensure air circulation, thereby achieving efficient drying of the medicinal materials. Its main functions include: providing heat to accelerate moisture evaporation, promoting uniform airflow within the drying oven, preventing uneven temperature distribution, shortening drying time, and helping to precisely control the temperature and humidity inside the oven. The electric heating fan assembly typically includes an electric heating element, a blower (or fan), air inlets and outlets, a temperature control device, and a hot air distribution system. The electric heating element converts electrical energy into heat energy, and the fan draws in air, heats it, and then delivers it into the drying oven, ensuring air circulation within the oven and thus uniformly heating the medicinal materials. The temperature control device monitors the temperature inside the chamber in real time to ensure its stability and accuracy. For example, the laboratory electric heating drying oven exhaust cabinet disclosed in authorization announcement number CN213514710U includes a cabinet body with an opening on the front side and a double door; several air inlets on the bottom plate of the cabinet body; an exhaust hole on the top of the cabinet body; an exhaust hood at the top of the exhaust hole; and an exhaust hood connected to an exhaust pipe, which contains an exhaust fan or is connected to the laboratory's exhaust system. This facilitates the extraction of heat, odors, or harmful gases emitted during sample heating in the electric heating drying oven, preventing the diffusion of odors, harmful gases, and heat into the laboratory. However, the above technical solution mainly relies on the air inlets at the bottom of the drying oven for hot air to enter and contact the experimental medicinal materials inside. At this time, the hot air blows from bottom to top, and the medicinal materials are usually only on one side (located at the bottom). That side (the side that receives the heat first) means that the other sides of the herbs inside the chamber do not receive uniform heat simultaneously. In actual operation, especially for herbs stacked high, the herbs at the bottom often receive more heat, while the herbs in the upper or middle layers may not receive heat as the heat may not arrive in time, resulting in uneven heat distribution. Furthermore, the upward flow of hot air will also lead to low drying efficiency. There is a temperature gradient between the top and bottom of the air, and the hotter air will naturally rise. In the drying chamber, a convection cycle of "hot air rising and cold air falling" is often formed. However, this convection cycle may not achieve optimal heat distribution, especially when the chamber is large. Direct contact between the heat and the hot air usually occurs at the bottom of the herbs, and the surface moisture evaporates quickly. However, the evaporation of moisture inside the herbs may be hindered by the evaporation of surface moisture, resulting in a slow drying process. Utility Model Content

[0003] The purpose of this utility model is to provide an electric heating blower assembly for a traditional Chinese medicine experimental drying oven, which is composed of a hollow rectangular blower box and a trapezoidal hollow blower box to form an air duct that can simultaneously discharge air downwards and sideways. At this time, the hot air generated by the electric heating blower unit is blown onto the medicinal materials in the drying oven through the hollow rectangular blower box and the trapezoidal hollow blower box, and hot air is supplied to the top and sides of the medicinal materials, so as to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: an electric heating blower assembly for a traditional Chinese medicine experimental drying oven, comprising a hollow rectangular blower box and a trapezoidal hollow blower box integrally formed on one side of the opening of the hollow rectangular blower box. The hollow rectangular blower box and the trapezoidal hollow blower box are interconnected and form an air duct that can discharge air downwards and to the side. An electric heating blower unit is installed inside the trapezoidal hollow blower box. A straight groove exhaust section is provided on the lower surface of the hollow rectangular blower box. A round hole exhaust section is provided on the outer wall of the trapezoidal hollow blower box on the side close to the hollow rectangular blower box. A control panel is installed on the outer wall of the trapezoidal hollow blower box on the side away from the hollow rectangular blower box. The output end of the control panel is electrically connected to the input end of the electric heating blower unit.

[0005] Preferably, the electric heating blower unit consists of several equally spaced electric heating rods installed at the bottom of the trapezoidal hollow air box and an axial flow fan installed on the outer wall of one side of the trapezoidal hollow air box. The input ends of the axial flow fan and the electric heating rods are electrically connected to the output end of the control panel.

[0006] Preferably, there are two axial fans, and the two axial fans are symmetrical about the vertical center reference plane of the trapezoidal hollow air box.

[0007] Preferably, the bottom of the trapezoidal hollow air box is equipped with several baffles, which are disposed between two adjacent electric heating rods.

[0008] Preferably, a wind zone control mechanism is installed on one side of the bottom end of the hollow rectangular wind box. The wind zone control mechanism is used to separate the hollow rectangular wind box and the trapezoidal hollow wind box into two opposing chambers.

[0009] Preferably, the air zone control mechanism includes a protruding plate fixed on one outer wall of the trapezoidal hollow air box, a double-rod cylinder installed on one outer wall of the protruding plate, and a support block fixed to the top of the piston rod of the double-rod cylinder. The air zone control mechanism also includes a hollow groove provided on one side of the top of the hollow rectangular air box and a baffle plate slidably installed inside the hollow groove, with the bottom end of the baffle plate fixedly connected to the top end of the support block.

[0010] Compared with the prior art, the beneficial effects of this utility model are as follows: The electric heating blower assembly for the experimental drying oven of traditional Chinese medicine adopts an air duct system composed of a hollow rectangular air box and a trapezoidal hollow air box, which can simultaneously discharge air downwards and sideways. This can effectively solve the problems of uneven hot air distribution and poor drying effect in traditional drying ovens. Hot air can be supplied from the upper part and the side part of the drying oven at the same time, ensuring that the medicinal materials can be exposed to hot air from all directions. Especially for the stacked or thick layers of medicinal materials, the hot air from the side and top can better penetrate into each layer of medicinal materials, ensuring that the upper and lower layers of medicinal materials can be uniformly heated by hot air at the same time, which greatly improves the heat transfer efficiency during the drying process.

[0011] The heating process of hot air has a lag effect, especially the moisture migration speed of the upper layer of medicinal materials is slower, which leads to a longer drying time. The combination design of hollow rectangular wind box and trapezoidal hollow wind box can ensure that hot air penetrates evenly to every corner of the medicinal materials from top to bottom and from the side, maximizing the contact area between hot air and medicinal materials. At this time, not only is the evaporation of moisture on the surface of the medicinal materials accelerated, but the migration of internal moisture also becomes smoother. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the main structure of this utility model;

[0013] Figure 2 This is a schematic diagram of the three-dimensional structure of the present invention. Figure 1 ;

[0014] Figure 3 This is a schematic diagram of the three-dimensional structure of the present invention. Figure 2 ;

[0015] Figure 4 This is a schematic diagram of the three-dimensional structure of the present invention. Figure 3 ;

[0016] Figure 5 This is a three-dimensional cross-sectional structural diagram of the present invention.

[0017] In the diagram: 1. Hollow rectangular air box; 101. Hollow slot; 2. Trapezoidal hollow air box; 3. Axial flow fan; 4. Control panel; 5. Air zone control mechanism; 501. Convex plate; 502. Double rod cylinder; 503. Support block; 504. Baffle; 6. Round hole exhaust section; 7. Straight slot exhaust section; 8. Electric heating rod; 9. Baffle plate. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0019] Please see Figure 1-5 An embodiment of this utility model provides an electric heating blower assembly for a traditional Chinese medicine experimental drying oven, comprising a hollow rectangular blower box 1 and a trapezoidal hollow blower box 2 integrally formed on one side of the opening of the hollow rectangular blower box 1. The hollow rectangular blower box 1 and the trapezoidal hollow blower box 2 are interconnected and form an air duct that can discharge air downwards and sideways. An electric heating blower unit is installed inside the trapezoidal hollow blower box 2. A straight groove exhaust part 7 is provided on the lower surface of the hollow rectangular blower box 1. A round hole exhaust part 6 is provided on the outer wall of the trapezoidal hollow blower box 2 on the side close to the hollow rectangular blower box 1. A control panel 4 is installed on the outer wall of the trapezoidal hollow blower box 2 on the side away from the hollow rectangular blower box 1. The output end of the control panel 4 is electrically connected to the input end of the electric heating blower unit.

[0020] The electric heating blower unit consists of several equally spaced electric heating rods 8 installed at the bottom of the trapezoidal hollow air box 2 and an axial flow fan 3 installed on the outer wall of one side of the trapezoidal hollow air box 2. The input ends of the axial flow fan 3 and the electric heating rods 8 are electrically connected to the output end of the control panel 4. There are two axial flow fans 3, which are symmetrical about the vertical center reference plane of the trapezoidal hollow air box 2. When the axial flow fan 3 and the electric heating rods 8 are turned on by the control panel 4, the electric heating rods 8 heat the internal air temperature of the hollow rectangular air box 1 and the trapezoidal hollow air box 2, and the axial flow fan 3 actively blows the heated air out through the round hole exhaust part 6 and the straight groove exhaust part 7 to ensure timely supply of hot air.

[0021] Several baffles 9 are installed at the bottom of the trapezoidal hollow air box 2. The baffles 9 are positioned between two adjacent electric heating rods 8. The multiple baffles 9 are used to divide the interior of the trapezoidal hollow air box 2 into several independent chambers and guide the airflow using the baffles 9. A wind zone control mechanism 5 is installed on one side of the bottom end of the hollow rectangular air box 1. The wind zone control mechanism 5 is used to separate the hollow rectangular air box 1 and the trapezoidal hollow air box 2 into two opposing chambers.

[0022] The air zone control mechanism 5 includes a protruding plate 501 fixed to one side of the outer wall of the trapezoidal hollow air box 2, a double-rod cylinder 502 installed on one side of the outer wall of the protruding plate 501, and a support block 503 fixed to the top of the piston rod of the double-rod cylinder 502. The air zone control mechanism 5 also includes a hollow groove 101 set on one side of the top of the hollow rectangular air box 1, and a baffle 504 slidably installed inside the hollow groove 101. The bottom end of the baffle 504 is fixedly connected to the top end of the support block 503. The operator can control only one side of the trapezoidal hollow air box 2 through the air zone control mechanism 5. Side air outlet is achieved by using the control panel 4 to activate the double-rod cylinder 502 in the air zone control mechanism 5. The double-rod cylinder 502 pushes the support block 503 and the baffle 504 upward, causing the baffle 504 to enter the hollow rectangular air box 1 through the hollow groove 101. The baffle 504 also blocks the hollow rectangular air box 1 and the trapezoidal hollow air box 2, making it difficult for hot air to enter the hollow rectangular air box 1. Instead, the hot air can only be discharged from the exhaust port 6 on the outer wall of the trapezoidal hollow air box 2, thus achieving the purpose of unilateral air outlet.

[0023] In this embodiment, the electric heating blower assembly is first arranged in the traditional Chinese medicine experimental drying oven. One electric heating blower assembly can be arranged on each of the left and right inner walls of the drying oven. Then, the operator turns on the electric heating blower unit through the control panel 4. The electric heating blower unit is responsible for converting electrical energy into heat energy and delivering hot air to the trapezoidal hollow air box 2 and the hollow rectangular air box 1 through a fan. The hot air entering the trapezoidal hollow air box 2 is discharged to the medicinal materials in the drying oven through the round hole exhaust part 6, while the hot air in the hollow rectangular air box 1 is discharged through the straight groove exhaust part 7. The hot air is discharged downwards and comes into contact with the medicinal materials. Through the combination of two types of air boxes, hot air can be delivered to the medicinal materials not only from the top of the drying chamber, but also blown from the sides, thus achieving all-round hot air coverage. As the hot air flows to the top and sides, the temperature and humidity of the hot air in the entire drying chamber gradually reach equilibrium. Under the action of this uniform hot air, the surface moisture of the medicinal materials is gradually evaporated, while the internal moisture gradually migrates to the surface through capillary action and will eventually be evaporated as well. The hot air can act on the medicinal materials from multiple directions at the same time, avoiding the problem of uneven airflow in traditional methods.

Claims

1. An electric heating blower assembly for a traditional Chinese medicine experimental drying oven, characterized in that: The device includes a hollow rectangular air box (1) and a trapezoidal hollow air box (2) integrally formed on one side of the opening of the hollow rectangular air box (1). The hollow rectangular air box (1) and the trapezoidal hollow air box (2) are interconnected and form an air duct that can discharge air downwards and sideways. An electric heating blower unit is installed inside the trapezoidal hollow air box (2). A straight groove exhaust part (7) is provided on the lower surface of the hollow rectangular air box (1). A round hole exhaust part (6) is provided on the outer wall of the trapezoidal hollow air box (2) on the side close to the hollow rectangular air box (1). A control panel (4) is installed on the outer wall of the trapezoidal hollow air box (2) on the side away from the hollow rectangular air box (1). The output end of the control panel (4) is electrically connected to the input end of the electric heating blower unit.

2. The electric heating blower assembly for a traditional Chinese medicine experimental drying oven according to claim 1, characterized in that: The electric heating blower unit consists of several equally spaced electric heating rods (8) installed at the bottom of the trapezoidal hollow air box (2) and an axial flow fan (3) installed on the outer wall of one side of the trapezoidal hollow air box (2). The input ends of the axial flow fan (3) and the electric heating rods (8) are electrically connected to the output end of the control panel (4).

3. The electric heating blower assembly for a traditional Chinese medicine experimental drying oven according to claim 2, characterized in that: Two axial flow fans (3) are provided, and the two axial flow fans (3) are symmetrical about the vertical center reference plane of the trapezoidal hollow air box (2).

4. The electric heating blower assembly for a traditional Chinese medicine experimental drying oven according to claim 2, characterized in that: The bottom of the trapezoidal hollow air box (2) is equipped with several baffles (9), and the baffles (9) are arranged between two adjacent electric heating rods (8).

5. The electric heating blower assembly for a traditional Chinese medicine experimental drying oven according to claim 1, characterized in that: A wind zone control mechanism (5) is installed on one side of the bottom of the hollow rectangular wind box (1). The wind zone control mechanism (5) is used to separate the hollow rectangular wind box (1) and the trapezoidal hollow wind box (2) into two opposing chambers.

6. The electric heating blower assembly for a traditional Chinese medicine experimental drying oven according to claim 5, characterized in that: The wind zone control mechanism (5) includes a protruding plate (501) fixed on one side of the outer wall of the trapezoidal hollow wind box (2), a double-rod cylinder (502) installed on one side of the outer wall of the protruding plate (501), and a support block (503) fixed to the top of the piston rod of the double-rod cylinder (502). The wind zone control mechanism (5) also includes a hollow groove (101) set on one side of the top of the hollow rectangular wind box (1) and a baffle (504) slidably installed inside the hollow groove (101). The bottom end of the baffle (504) is fixedly connected to the top end of the support block (503).

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