CN206281290U - A hot air circulation oven - Google Patents

Abstract

The utility model discloses a heated air circulation oven, including box, drying vehicle, controlling means and heated air circulation system, be provided with in the box and dry by the fire the chamber, it is provided with heating device and temperature sensor to dry by the fire on the chamber, heating device and temperature sensor all with controlling means electric connection, heated air circulation system includes electronic air pump, exhaust tube, blast pipe, drying device and connecting pipe, the suction nozzle and the exhaust tube of electronic air pump are connected, the exhaust tube is linked together with drying the chamber, the exhaust nozzle and the blast pipe of electronic air pump are connected, electronic air pump and controlling means electric connection, drying device includes the jar body and sets up the drier layer in the jar body, the blast pipe is linked together with the jar body, the connecting pipe both ends are linked together with jar body and drying the chamber respectively; the hot air circulation oven has high heat utilization rate.

Description

A hot air circulation oven

technical field

The utility model relates to a hot air circulation oven.

Background technique

Hot air circulation ovens generally have heating tubes, and ovens with circulating fans can be called hot air circulation ovens, because no matter what the structure of the oven is, whether the wind direction is horizontal or vertical, in the final analysis, hot air circulates inside, so they can be called hot air circulation ovens.

However, the thermal energy utilization rate of the current hot air circulation oven is general, and it is difficult to meet the demand in the market.

Utility model content

The technical problem to be solved by the utility model is to provide a hot air circulation oven with high utilization rate of heat energy.

In order to solve the above problems, the utility model adopts the following technical solutions:

A hot air circulation oven, including a box body, a drying car, a control device and a hot air circulation system, the box body is provided with a drying chamber, the drying chamber is provided with a heating device and a temperature sensor, and the heating device and the temperature sensor are both It is electrically connected with the control device. The hot air circulation system includes an electric air pump, an air extraction pipe, an exhaust pipe, a drying device and a connecting pipe. The exhaust nozzle of the electric air pump is connected to the exhaust pipe, the electric air pump is electrically connected to the control device, the drying device includes a tank and a desiccant layer arranged in the tank, and the exhaust The pipe communicates with the tank body, and the two ends of the connecting pipe communicate with the tank body and the drying chamber respectively.

Preferably, the desiccant layer is a molecular sieve desiccant layer. It has strong adsorption to water molecules, and it can still hold water molecules well under high temperature conditions, so it has good applicability.

Preferably, a one-way valve is installed on the exhaust pipe to prevent desiccant from entering the electric air pump. It can effectively prevent the desiccant from entering the electric air pump and causing the electric air pump to be affected.

Preferably, the end of the connecting pipe is provided with a stainless steel filter to prevent desiccant from entering the connecting pipe. It can prevent the desiccant from entering the drying chamber through the connecting pipe.

Preferably, both the connecting pipe and the exhaust pipe are threadedly connected with the tank body. Easy disassembly and assembly, reliable connection.

Preferably, both the exhaust pipe and the connecting pipe are fixedly connected to the box body. The structure is stable and the connection is reliable.

As a preference, heat insulating films are pasted on the outer surfaces of the exhaust pipe, the exhaust pipe and the tank. It can effectively prevent the heat from being transferred to the outside and cause the heat energy utilization rate to decrease.

Preferably, the heating device is an electric heating tube. Fast thermal response, high temperature control accuracy, and high overall thermal efficiency.

Preferably, the connecting pipe is a six-way pipe, and there are two connecting pipes.

The beneficial effects of the utility model are: by using a hot air circulation system composed of an electric air pump, an exhaust pipe, an exhaust pipe, a drying device and a connecting pipe, since no new cold air will be introduced during the hot air circulation, it is different from the traditional Compared with the heat energy utilization rate of the equipment, it saves a lot of energy, and the drying device can dry the moisture in the air to prevent the moisture from entering the drying chamber again. In addition, the desiccant layer is a molecular sieve desiccant layer, which has a strong effect on water molecules. Absorptive, and under high temperature conditions, it can still accommodate water molecules very well, and has good applicability. A one-way valve is installed on the exhaust pipe to prevent the desiccant from entering the electric air pump, which can effectively prevent the desiccant from entering the electric air pump and causing the electric air pump to be affected. The end of the connecting pipe is provided with a stainless steel filter to prevent the desiccant from entering the connecting pipe, which can prevent the desiccant from entering the drying chamber through the connecting pipe. Both the connecting pipe and the exhaust pipe are threadedly connected with the tank body, which is easy to disassemble and reliable in connection. Both the exhaust pipe and the connecting pipe are fixedly connected to the box body, with stable structure and reliable connection. The suction pipe, exhaust pipe and the outer surface of the tank are all pasted with heat insulation film, which can effectively prevent the heat from being transferred to the outside and reduce the utilization rate of heat energy. The heating device is an electric heating tube, which has fast heat response, high temperature control precision and high comprehensive thermal efficiency.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings that need to be used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings in the following description are only some implementations of the present invention. For example, those of ordinary skill in the art can also obtain other drawings based on these drawings on the premise of not paying creative efforts.

Fig. 1 is the overall structure schematic diagram of a kind of hot air circulation oven of the present utility model;

Fig. 2 is a schematic diagram of the internal structure of a hot air circulation oven of the present invention;

Fig. 3 is a partial structural schematic diagram of a hot air circulation oven of the present invention;

Fig. 4 is a schematic diagram of the internal structure of a drying device of a hot air circulation oven of the present invention;

Fig. 5 is a schematic structural view of the end of the connecting pipe of a hot air circulation oven of the present invention.

detailed description

The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. example.

Example 1

As shown in Figures 1-4, a hot air circulation oven includes a box body 1, a drying car 2, a control device 3 and a hot air circulation system 4. A drying chamber 5 is arranged inside the box body 5, and A heating device 6 and a temperature sensor (not shown) are provided, and both the heating device 6 and the temperature sensor are electrically connected to the control device 3. The hot air circulation system 4 includes an electric air pump 7, an air extraction pipe 8, and an exhaust pipe 9. Drying device 10 and connecting pipe 11, the suction nozzle of the electric air pump 7 is connected with the suction pipe 8, the suction pipe 8 is connected with the drying chamber 5, the exhaust nozzle of the electric air pump 7 is connected with the exhaust pipe 9, the electric air pump 7 is electrically connected to the control device 3, the drying device 10 includes a tank body 12 and a desiccant layer 13 arranged in the tank body 12, and the exhaust pipe 9 is connected to the tank body 12 The two ends of the connecting pipe 11 are respectively connected with the tank body 12 and the drying chamber 5, and the hot air circulation system composed of the electric air pump 7, the air extraction pipe 8, the exhaust pipe 9, the drying device 10 and the connecting pipe 11 is used. 4. Since no new cold air is introduced in the process of hot air circulation, compared with traditional equipment, the utilization rate of heat energy is high and a lot of energy is saved, and the drying device 10 can dry the moisture in the air to prevent moisture from entering the drying room again. cavity 5.

The beneficial effects of this embodiment are: by using a hot air circulation system composed of an electric air pump, an exhaust pipe, an exhaust pipe, a drying device and a connecting pipe, since no new cold air is introduced during the hot air circulation, it is different from the traditional Compared with the heat energy utilization rate of the advanced equipment, it saves a lot of energy, and the drying device can dry the moisture in the air to prevent the moisture from entering the drying chamber again.

Example 2

As shown in Figures 1-5, a hot air circulation oven includes a box body 1, a drying car 2, a control device 3 and a hot air circulation system 4, the control device 3 is located on the side of the box body 1, and the control device 3 and The box body 1 is fixedly connected, the control device 3 is PLC, the box body 1 is provided with a drying cavity 5, and the drying cavity 5 is provided with a heating device 6 and a temperature sensor (not shown), and the heating device 6 and the temperature sensor are all embedded in the drying chamber 5, and the heating device 6 and the temperature sensor are electrically connected to the control device 3. The hot air circulation system 4 includes an electric air pump 7, an air extraction pipe 8, an exhaust pipe 9, Drying device 10 and connecting pipe 11, the suction nozzle of the electric air pump 7 is detachably connected with the suction pipe 8, the suction pipe 8 communicates with the drying chamber 5, the exhaust nozzle of the electric air pump 7 is connected with the exhaust pipe 9 detachable connection, the electric air pump 7 is electrically connected with the control device 3, the drying device 10 includes a tank body 12 and a desiccant layer 13 arranged in the tank body 12, and the two ends of the connecting pipe 11 are respectively connected to The tank body 12 communicates with the drying cavity 5 . The desiccant layer 13 is a molecular sieve desiccant layer. It has strong adsorption to water molecules, and it can still hold water molecules well under high temperature conditions, so it has good applicability. A one-way valve (not shown) that prevents desiccant from entering the electric air pump 7 is installed on the exhaust pipe 9 . It can effectively prevent the desiccant from entering the electric air pump 7 and causing the electric air pump 7 to be affected. The end of the connecting pipe 11 is provided with a stainless steel filter 14 to prevent desiccant from entering the connecting pipe 11 , and the stainless steel filter 14 is bonded to the connecting pipe 11 . It can prevent desiccant from entering into the drying cavity 5 through the connecting pipe 11 . Both the connecting pipe 11 and the exhaust pipe 9 are provided with external threads (not shown), and the tank body 12 is provided with screw holes (not shown) matching the external threads. The connecting pipe 11, The exhaust pipe 9 and the tank body 12 are connected by external threads and screw holes. Easy disassembly and assembly, reliable connection. Both the exhaust pipe 8 and the connecting pipe 11 are fixedly connected with the box body 1 . The structure is stable and the connection is reliable. The air suction pipe 8, the exhaust pipe 9 and the outer surface of the tank body 12 are all pasted with a heat insulating film (not shown). It can effectively prevent the heat from being transferred to the outside and cause the heat energy utilization rate to decrease. The heating device 6 is an electric heating tube. Fast thermal response, high temperature control accuracy, and high overall thermal efficiency. The connecting pipe 11 is a six-way pipe, and there are two connecting pipes. By using the hot air circulation system 4 composed of the electric air pump 7, the air extraction pipe 8, the exhaust pipe 9, the drying device 10 and the connecting pipe 11, Since no new cold air is introduced in the process of hot air circulation, compared with traditional equipment, the utilization rate of heat energy is high, and a large amount of energy is saved, and the drying device 10 can dry the moisture in the air to prevent moisture from entering the drying chamber 5 again. Inside.

The beneficial effects of this embodiment are: by using a hot air circulation system composed of an electric air pump, an exhaust pipe, an exhaust pipe, a drying device and a connecting pipe, since no new cold air is introduced during the hot air circulation, it is different from the traditional Compared with the heat energy utilization rate of the equipment, it saves a lot of energy, and the drying device can dry the moisture in the air to prevent the moisture from entering the drying chamber again. In addition, the desiccant layer is a molecular sieve desiccant layer, which has a strong effect on water molecules. Absorptive, and under high temperature conditions, it can still accommodate water molecules very well, and has good applicability. A one-way valve is installed on the exhaust pipe to prevent the desiccant from entering the electric air pump, which can effectively prevent the desiccant from entering the electric air pump and causing the electric air pump to be affected. The end of the connecting pipe is provided with a stainless steel filter to prevent the desiccant from entering the connecting pipe, which can prevent the desiccant from entering the drying chamber through the connecting pipe. Both the connecting pipe and the exhaust pipe are threadedly connected with the tank body, which is easy to disassemble and reliable in connection. Both the exhaust pipe and the connecting pipe are fixedly connected to the box body, with stable structure and reliable connection. The suction pipe, exhaust pipe and the outer surface of the tank are all pasted with heat insulation film, which can effectively prevent the heat from being transferred to the outside and reduce the utilization rate of heat energy. The heating device is an electric heating tube, which has fast heat response, high temperature control precision and high comprehensive thermal efficiency.

The above is only a specific embodiment of the utility model, but the scope of protection of the utility model is not limited thereto, and any change or replacement that is not thought of through creative work should be covered within the scope of protection of the utility model .

Claims (9)

1. A hot-air circulation oven, comprising a casing, a drying car, a control device and a hot-air circulation system, a drying cavity is arranged in the casing, a heating device and a temperature sensor are arranged on the described drying cavity, and the heating device and temperature The sensors are all electrically connected to the control device. It is characterized in that: the hot air circulation system includes an electric air pump, an air extraction pipe, an exhaust pipe, a drying device and a connecting pipe, and the air extraction nozzle of the electric air pump is connected with the air extraction pipe. The exhaust pipe is connected to the drying chamber, the exhaust nozzle of the electric air pump is connected to the exhaust pipe, the electric air pump is electrically connected to the control device, and the drying device includes a tank body and a desiccant arranged in the tank body. layer, the exhaust pipe communicates with the tank body, and the two ends of the connecting pipe communicate with the tank body and the drying chamber respectively. 2. A hot air circulation oven according to claim 1, characterized in that: the desiccant layer is a molecular sieve desiccant layer. 3. A hot air circulation oven according to claim 2, characterized in that: a one-way valve is installed on the exhaust pipe to prevent desiccant from entering the electric air pump. 4. A hot air circulation oven according to claim 3, characterized in that: the end of the connecting pipe is provided with a stainless steel filter to prevent desiccant from entering the connecting pipe. 5. A hot air circulation oven according to claim 4, characterized in that: both the connecting pipe and the exhaust pipe are screwed to the tank body. 6. A hot air circulation oven according to claim 5, characterized in that: both the exhaust pipe and the connecting pipe are fixedly connected to the box body. 7. A hot air circulation oven according to claim 6, characterized in that: the exhaust pipe, the exhaust pipe and the outer surface of the tank are all pasted with heat-insulating films. 8. A hot air circulation oven according to claim 7, characterized in that: the heating device is an electric heating tube. 9. A hot air circulation oven according to claim 8, characterized in that: the connecting pipe is a six-way pipe, and there are two connecting pipes.