CN210382557U

CN210382557U - Air heat flow heating equipment

Info

Publication number: CN210382557U
Application number: CN201920400515.9U
Authority: CN
Inventors: 曹江涛
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-03-27
Filing date: 2019-03-27
Publication date: 2020-04-24
Anticipated expiration: 2029-03-27

Abstract

The utility model relates to the technical field of heating equipment such as medicine, food processing, kitchen and the like, and provides an air heat flow heating device which comprises a container, a heat absorber, a hot air flow heating channel, an air collecting pipe, a hot air flow return channel and a heating device; the heating device comprises a fan, a heater and a hot air flow transmission channel; a heater is arranged in the wind field of the fan, and a hot air flow transmission channel is arranged at the periphery of the heater; the air inlet of the heater is connected with a hot air flow backflow channel, the lower end of the air collecting pipe is communicated with a hot air flow transmission channel, a container is arranged above the air collecting pipe, and a space between the upper end of the air collecting pipe and the container forms a hot air flow heating channel; the heat receiving part of the container is provided with a heat absorber which is tightly contacted with the container. The air flow is heated repeatedly in the closed space, part of heat is directly heated to the container, and the other part of heat is absorbed by the heat absorber and then is transferred to the container. The utility model discloses air heat flow firing equipment heaies up fast, the heating is even, the waste heat is little, accurate accuse temperature, do not have special requirement, easy to maintain to the container material, and application prospect is wide.

Description

Air heat flow heating equipment

Technical Field

The utility model relates to an equipment heating technical field such as medicine, food processing, kitchen, in particular to air heat flow firing equipment for evaporate, fry, boil food, medicinal material and heat other materials.

Background

The common electric heating tube heating equipment has the advantages that the electric heating tube has large thermal inertia and slow temperature rise, when the electric heating tube does not need to be heated, the waste heat is large, the heating is uneven, the heating temperature is not easy to accurately control, and the pan is easy to be burnt. Because the thermal resistance is large, the temperature of the internal heating wire is very high, the service life is influenced, and the steam heating equipment relates to a pressure boiler, has low efficiency, complex equipment, poor stability, high operation cost and certain danger, and is not suitable for small-scale use.

In recent years, a high-power electromagnetic stove has appeared, for example, chinese utility model patent application publication CN207648868U discloses a large electromagnetic stove, which has the advantages of direct heating, fast temperature rise, easy temperature control, small preheating, uneven heating, easy over-high local temperature and pan pasting, special requirements for the material of a heating container, only being a magnetic material, not being able to use 304 or 316 acid and alkali resistant stainless steel materials, high manufacturing and maintenance costs, and high requirements for the use environment.

SUMMERY OF THE UTILITY MODEL

In view of the following drawbacks of the prior art:

the common electric heating tube directly heats equipment with large waste heat, slow temperature rise, uneven heating and inaccurate temperature control.

The existing electromagnetic stove is uneven in heating, easy to cause local over-temperature, high in requirement on environment, long in maintenance time and high in cost, and can be heated only by a magnetic absorption material.

The utility model aims at overcoming the not enough of prior art, provide an air heat flow firing equipment, utilize enclosure space inner loop air as heating medium, reach fast, the heating is even, the waste heat is little, accurate accuse temperature, do not have requirement, easy to maintain's purpose to heating appliance material.

The utility model adopts the following technical scheme:

an air heat flow heating device comprises a container, a heat absorber, a hot air flow heating channel, an air collecting pipe, a hot air flow return channel and a heating device;

the heating device comprises a fan, a heater and a hot air flow transmission channel; the heater is arranged in the fan wind field; the hot air flow transmission channel is arranged between the fan and the air collecting pipe;

the lower end of the air collecting pipe is communicated with the hot air flow conveying channel, the container is arranged above the air collecting pipe, and a space between the upper end of the air collecting pipe and the container forms the hot air flow heating channel; the inlet of the hot gas flow return channel is communicated with the outlet of the hot gas flow heating channel, and the outlet of the hot gas flow return channel is connected with the air inlet of the heating device;

the fan pushes hot air flow to circulate in a closed space formed by the air collecting pipe, the hot air flow heating channel, the container, the hot air flow return channel and the hot air flow delivery channel;

the heat absorber is arranged on the outer wall of the container and is in contact with the hot air flow heating channel, and the heat absorber is in close contact with the container or is integrated with the container.

Further, the heat absorber is composed of a heat conducting fin, and the shape of the contact side of the heat conducting fin and the container is wave-shaped.

Furthermore, the heat absorber is composed of a small protrusion attached to the outer wall of the container, and the protrusion increases the heating area of the container.

Furthermore, the lower end of the air collecting pipe is in a horn shape with a downward opening, and the upper end of the air collecting pipe is in a horn shape with an upward opening.

Further, the container is a tank body, a pot body, a barrel body, a box body or a pipeline.

Further, the tank body is a horizontal tank or a vertical tank.

Further, the heating device is arranged at the lower part, the side part or the independent part of the air heat flow heating device; when the air collecting pipe is arranged independently, the return air is guided to the air inlet of the heating device by a pipeline, and the heating air flow is guided to the air collecting pipe by the pipeline.

Furthermore, an auxiliary heater is arranged in the hot air flow heating channel.

Further, the heater is arranged in the hot air flow heating channel.

Further, a first temperature sensor is arranged on the surface of the heater; and/or a second temperature sensor is arranged in the air collecting pipe; and/or a third temperature sensor is arranged on the bottom plate of the container.

Furthermore, the hot air flow heating channel, the air collecting pipe, the hot air flow return channel and the heating device are all arranged in a shell.

Furthermore, a heat insulation layer is arranged between the outer shell and the outer wall of the channel through which the hot air flows.

Further, the fan is connected with a motor through a fan transmission shaft, and the motor is connected with the controller through a frequency converter; the frequency converter controls the rotating speed of the fan, so that accurate temperature control and rapid temperature rise are realized.

Further, the fan is a centrifugal fan.

The fan pushes hot air flow to circulate in a closed space formed by the air collecting pipe, the hot air flow heating channel, the container, the hot air flow return channel and the hot air flow delivery channel. The fan sucks the hot air with lower temperature in the hot air flow return channel, blows the hot air flow to the heater, after the temperature is increased, the hot air flow passes through the hot air flow conveying channel, is gathered to the air collecting pipe, then diffuses towards the bottom surface of the container, and the speed of the hot air flow is reduced. When hot air flows through the hot air flow heating channel, one part of heat directly heats the container, and the other part of heat is absorbed by the heat absorber and then is conducted to the container. After the container absorbs heat, the temperature of hot air flow is reduced, then the hot air flow enters the hot air flow return passage, is sucked by the fan, is blown to the heater again to heat, and the operation is repeated, so that the heated container transfers heat to the material.

The utility model has the advantages that: the heating air flow circularly flows in the closed channel to heat the container, so that the heat utilization efficiency is high and the energy consumption is low; after the air is heated and absorbs heat, the air is gathered by the air collecting pipe, blown to the container and the heat absorber and releases heat to the container, so that the heating is uniform, and the convection heat transfer is fast; after the heating is not carried out, the fan is stopped, the air is static, the heat transfer is slow, and the accurate temperature control can be realized; when the local temperature of the heating container is a little higher, the heat is naturally reduced to release heat to the point; the utility model discloses heat up fast, the heating is even, the waste heat is little, accurate accuse temperature, do not have special requirement, easy to maintain to the heater container material, have wide application prospect.

Drawings

Fig. 1a shows a schematic structural view (transverse section) of an air heat flow heating device of embodiment 1.

FIG. 1b is a schematic cross-sectional view taken along line A-A of FIG. 1 a.

FIG. 1C is a schematic bottom view of FIG. 1a taken along line C.

FIG. 1D is an enlarged view of the portion D in FIG. 1 c.

Fig. 2a is a schematic view (side view) showing the combination relationship between the pan body and the heat absorber when the container of embodiment 2 is a pan body.

FIG. 2b is a schematic view showing the combination relationship between the pot body and the heat absorber when the container of embodiment 2 is a pot body (schematic bottom view)

FIG. 3a is a schematic side view showing the combination of the container and the heat sink when the container of example 3 is heated at the bottom of the barrel body.

FIG. 3b is a schematic view (bottom view) showing the combination of the container and the heat sink when the container of example 3 is heated at the bottom of the barrel.

Fig. 4a is a schematic side view showing the relationship between the cylinder and the heat absorber in the case of heating the periphery of the side surface of the vertical cylinder in the vessel of example 4.

Fig. 4b is a schematic view (bottom view) showing the combination of the vertical cylinder and the heat sink when the container of example 4 is heated by heating the periphery of the side of the vertical cylinder.

Fig. 5 is a schematic cross-sectional view of a second heater disposed in a hot air flow heating channel in embodiment 5.

Wherein: 1-an exhaust pipe; 2-a housing; 3-a container; 4-heat absorber fixing plate; 5, a heat absorber; 6-hot gas flow back to the flow channel; 7-hot air flow heating channel; 8-air collecting pipe; 9-hot air flow delivery channel; 10-a heater; 11-a fan drive shaft; 12-a motor; 13-a fan; 14-a water valve; 15-a water pipe; 16-an end cap; 17-second heater.

Detailed Description

Specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It should be noted that technical features or combinations of technical features described in the following embodiments should not be considered as being isolated, and they may be combined with each other to achieve better technical effects.

Example 1

As shown in fig. 1a to fig. 1d, an air heat flow heating apparatus according to an embodiment of the present invention includes a container 3, a heat absorber 5, a hot air flow heating channel 7, an air collecting pipe 8, a hot air flow return channel 6, and a heating device;

the heating device comprises a fan 13, a heater 10 and a hot air flow transmission channel 9, wherein the heater 10 is arranged in an air field of the fan 13, and the hot air flow transmission channel 9 is arranged between the fan 13 and the air collecting pipe 8;

the inlet of the hot air flow return channel 6 is communicated with the outlet of the hot air flow heating channel 7, the outlet of the hot air flow return channel is communicated with the air inlet of the heating device, the lower end of the air collecting pipe 8 is connected with the hot air flow conveying channel 9, the container 3 is arranged above the air collecting pipe 8, and the space between the upper end of the air collecting pipe 8 and the container 3 forms the hot air flow heating channel 7; the heat absorber 5 is arranged on the heated part of the container 3, and the heat absorber 5 is in close contact with the container 3;

the fan 13 pushes hot air to circulate in a closed space formed by the air collecting pipe 8, the hot air heating channel 7, the container 3, the hot air reflux channel 6 and the hot air delivery channel 9.

Preferably, as shown in fig. 1a to 1d, the heat absorber 5 is made of a heat conducting sheet, and the heat conducting sheet is in a wave shape on the side contacting the container 3, and is fixed on the heat absorber fixing plate 4 to be in close contact with the heated surface of the container 3. The lower end of the air collecting pipe 9 is in a horn shape with a downward opening, and the upper end of the air collecting pipe is in a horn shape with an upward opening. The fan 13 is a centrifugal fan, the fan 13 is connected with the motor 12 through the fan transmission shaft 11, the motor 12 is connected with the controller through the frequency converter, and the frequency converter controls the rotating speed of the fan 13, so that accurate temperature control and rapid temperature rise are realized. The heater 10 is an electric heater with a surface-mounted heat sink. And temperature sensors are arranged on the surface of the heater 10, in the air collecting pipe 8 and on the bottom plate 3 of the container and are all connected with a control system. And an insulating layer is arranged between the shell 2 and the outer wall of the hot air flow pipeline.

Example 2

Fig. 2a to 2b show another embodiment, which is different from embodiment 1 (fig. 1a to 1d) in that: the container 3 in fig. 1 a-1 d is a horizontal heating tank, whereas the container 3 in fig. 2 a-2 b is a spherical heating pan.

The way in which the cold sink 5 is joined to the container 3 is shown in fig. 2 a-2 b.

Example 3

Fig. 3a to 3b show another embodiment, which differs from embodiment 1 (fig. 1a to 1d) in that: the vessel 3 in fig. 1 a-1 d is a horizontal heating tank, while the vessel in fig. 3 a-3 b is a heating bucket, flat bottom, bottom heating.

The way in which the cold sink 5 is joined to the container 3 is shown in fig. 3 a-2 b.

Example 4

Fig. 4a to 4b show another embodiment, which is different from embodiment 1 (fig. 1a to 1d) in that: the vessel 3 in fig. 1 a-1 d is a horizontal heating tank, while in fig. 4 a-4 b the vessel 3 is a vertical cylinder, with side peripheral heating.

The way in which the cold sink 5 is joined to the container 3 is shown in fig. 4 a-2 b.

Example 5

Fig. 5 shows another embodiment, which differs from embodiment 1 (fig. 1a to 1d) in that: fig. 1 a-1 d comprise the hot gas flow heating channel 7, no heater is arranged in the hot gas flow heating channel 7, and fig. 5 is provided with a second heater 17 in the hot gas flow heating channel 7.

The working principle of the embodiment of the utility model is explained as follows:

the fan 13 blows the circulating hot air to the heater 10, the temperature of the air flow is raised, and the air flow is gathered in the wind collecting pipe 8 through the hot air flow transmission channel 9 and blown to the container 3. The upper end of the wind collecting pipe 8 is in a horn shape, a hot air heating channel 7 is formed between the wind collecting pipe and the container 3, when hot air flows through the hot air heating channel 7, the speed of the hot air is reduced, one part directly heats the container 3, the other part heats the heat absorber 5, and the heat absorber 5 conducts heat to the container 3. After the heat is transferred to the container 3 by the hot air flow, the temperature is reduced, the hot air flow enters the hot air flow return passage 6, is sucked by the fan 13 and is blown to the heater 10 again to heat, and the steps are repeated, so that the heated container 3 transfers the heat to the material. The controller controls the temperature of the heater 10 according to the signal of a first temperature sensor arranged on the surface of the heater 10, controls the air flow temperature according to the signal of a second temperature sensor arranged in the air collecting pipe 8, and controls the temperature of the bottom plate of the container 3 according to the signal of a third temperature sensor arranged on the bottom plate of the container. A frequency converter connected to the motor 12 controls the hot gas flow rate.

The utility model discloses other deformations still, heat absorber 5 is by the welding the tiny protrusion of 3 heating surfaces of container is constituteed, increases the heated area of container 3.

The utility model discloses other still warp, if the heating setting is in lateral part or separation setting, lead to with the backward flow wind heating device's air intake, lead to the heated air current through the pipeline collection tuber pipe 8.

The utility model discloses other still warp, if the container is the pipeline, set up the urceolus outside the pipeline, heating air current gets into from one end, comes out from the other end and introduces heating device's air intake.

It should be noted that the hot gas flow channel and the return channel in the above embodiments are only preferred embodiments, and other forms can be adopted according to actual needs.

While several embodiments of the present invention have been presented herein, it will be appreciated by those skilled in the art that changes can be made to the embodiments herein without departing from the spirit of the invention. The above-described embodiments are merely exemplary and should not be taken as limiting the scope of the invention.

Claims

1. An air heat flow heating device is characterized by comprising a container, a heat absorber, a hot air flow heating channel, an air collecting pipe, a hot air flow channel and a heating device;

the heating device comprises a fan, a heater and a hot air flow transmission channel; the heater is arranged in a wind field of the fan; the hot air flow transmission channel is arranged between the fan and the air collecting pipe;

the heat absorber is arranged on the part of the outer wall of the container, which is in contact with the hot air flow heating channel; the heat sink is in intimate contact with, or integral with, the container;

the hot air flow heating channel, the air collecting pipe, the hot air flow return channel and the heating device are all arranged in a shell.

2. An air-heated fluid heating apparatus as claimed in claim 1 wherein said heat sink is comprised of a plurality of thermally conductive fins, said thermally conductive fins having a wave-like shape on the side contacting said container.

3. An air heated stream heating apparatus as claimed in claim 1 wherein said heat sink is comprised of a thin projection attached to the outer wall of said container, said projection being attached to the outer wall of said container, said projection increasing the heated area of said container.

4. An air heating stream apparatus as claimed in claim 1 wherein said air collection duct is flared downwardly at its lower end and upwardly at its upper end.

5. An air heated stream heating apparatus as claimed in claim 1 wherein said vessel is a tank, pan, tub, box or pipe.

6. An air heated stream heating apparatus as claimed in claim 5 wherein said tank is a horizontal or vertical tank.

7. A hot air stream heating apparatus as claimed in claim 5, wherein said heating means is provided at the lower part, or at the side part, or separately; when the heating device is arranged independently, the return air is guided to the air inlet of the heating device by a pipeline, and the heating air flow is guided to the air collecting pipe by the pipeline.

8. An air heated stream heating apparatus as claimed in any one of claims 1 to 7 wherein an auxiliary heater is provided in said hot air stream heating path.

9. An air heated stream heating apparatus as claimed in any one of claims 1 to 7 wherein said heater is disposed within said hot air stream heating path.

10. An air heated stream heating apparatus as claimed in any one of claims 1 to 7 wherein said heater surface is provided with a first temperature sensor; and/or a second temperature sensor is arranged in the air collecting pipe; and/or a third temperature sensor is arranged on the bottom plate of the container.