Comprehensive heat insulation heating device

Abstract

The utility model discloses a comprehensive heat insulation heating device which comprises a heating cavity and a shell, the shell is grounded, the heating cavity is arranged in the shell, a heat insulation lining can be selectively and additionally arranged on the inner wall of the heating cavity according to working temperature, an outer heat insulation cover is arranged on the outer wall of the heating cavity, and a space is reserved between the outer heat insulation cover and the outer wall of the heating cavity. A mirror surface protective cover is arranged on the outer side of the outer heat insulation cover, one end of a negative pressure exhaust pipe is communicated with the outer heat insulation cover, and the other end of the negative pressure exhaust pipe is communicated with the outside. The utility model has the advantages that the space between the heat-insulating lining and the heating cavity is empty, thereby reducing the contact area and reducing the heat transmitted from the heating cavity; a negative pressure exhaust pipe exhausts air, heat conduction is reduced, an air blower accelerates air flowing, and the heated heating cavity is cooled; the mirror surface protective cover reduces part of heat radiation of the outer heat insulation cover, and discharged heat is directly communicated to the outside, so that the environment temperature of the constant-temperature workshop is not influenced.

Description

Technical Field

[0001] The utility model relates to the technical field of ovens, in particular to a heating device with comprehensive heat insulation. Background Art

[0002] A vacuum defoaming oven is a device specifically used to remove air bubbles inside or on the surface of products. Due to its compact structure design, its heating chamber and complex electrical components are all installed in a frame, and the outside is wrapped by a shell. During the working process, the temperature inside the heating chamber can reach up to 400°C. Based on the second law of thermodynamics, high-temperature objects will spontaneously transfer heat to low-temperature objects. Therefore, it will inevitably lead to an increase in temperature, bringing other impacts. On the one hand, most of the electrical components in the device have a heat resistance temperature of about 80°C. Excessive temperature will cause the instruments and meters to malfunction, resulting in equipment damage and causing greater losses. On the other hand, most of the working environments of the device are dust-free workshops, which need to maintain a constant temperature environment. When the device is running, the environmental temperature is likely to rise due to heat transfer. Content of the Utility Model

[0003] The technical problem to be solved by the utility model is that during the working process of the heating device, due to heat exchange, it will affect the service life of other electrical components in the device and will also cause the environmental temperature in the constant temperature workshop to rise. In view of the above problems, a heating device with comprehensive heat insulation is proposed, which includes a heating chamber and a shell. The shell is placed on the ground, the heating chamber is arranged inside the shell, an outer heat insulation cover is arranged on the outer wall of the heating chamber, there is a space between the outer heat insulation cover and the outer wall of the heating chamber, a mirror protective cover is arranged on the outside of the outer heat insulation cover, one end of a negative pressure exhaust pipe is communicated with the outer heat insulation cover, and the other end leads to the outside. A blower is arranged inside the shell and is communicated with the outer heat insulation cover.

[0004] Preferably, an inner door is arranged at the front end of the heating chamber, and an outer door is arranged at the corresponding position of the shell. The two doors are heat-insulated to prevent the high temperature of the outer door from affecting the environmental temperature in the workshop and scalding the staff.

[0005] Preferably, the mirror protective cover is made of stainless steel, the surface of the mirror protective cover is polished, and through holes are evenly arranged on the mirror protective cover. The mirror protective cover can reduce part of the heat radiation of the outer heat insulation cover, and the through holes are used for the air flow to pass through to reduce the temperature and avoid damaging the electrical components.

[0006] For the optimization of the technical solution of the present utility model, a plurality of exhaust ducts are provided at the top of the outer shell, and the exhaust ducts lead to the outside. An exhaust fan is provided in each exhaust duct; the exhaust fan and the negative pressure suction pipe are always in a working state, and the blower enters the working state after the heating is completed. The hot air is directly discharged to the outside, which will not affect the ambient temperature of the workshop. The exhaust fan utilizes air convection to reduce the temperature inside the outer shell. The negative pressure suction pipe reduces the air between the outer heat insulation cover and the heating chamber, reduces the heat conduction of the heating chamber to the outside, and most of the heat is directly discharged to the outside, avoiding the increase of the ambient temperature of the workshop. The blower accelerates the air flow between the outer heat insulation cover and the heating chamber, cools the heated heating chamber, and reduces the loss of electrical components.

[0007] The technical problem to be solved by the present utility model is that when the heating device is at too high a working temperature, the heat conducted outward by the heating chamber increases, and the external heat insulation structure cannot reduce the temperature to a suitable range. In view of the above problem, a heating device with comprehensive heat insulation is proposed, which includes a heating chamber and an outer shell. The outer shell is placed on the ground, the heating chamber is arranged inside the outer shell, a heat insulation lining is arranged on the inner wall of the heating chamber, an outer heat insulation cover is arranged on the outer wall of the heating chamber, there is a space between the outer heat insulation cover and the outer wall of the heating chamber, a mirror protective cover is arranged on the outside of the outer heat insulation cover, one end of the negative pressure suction pipe is communicated with the outer heat insulation cover, and the other end leads to the outside. The blower is arranged inside the outer shell and is communicated with the outer heat insulation cover.

[0008] For the optimization of the technical solution of the present utility model, an inner door is provided at the front end of the heating chamber, and an outer door is provided at the corresponding position of the outer shell. The two doors are heat-insulated to prevent the high temperature of the outer door from affecting the ambient temperature of the workshop and scalding the staff.

[0009] For the optimization of the technical solution of the present utility model, the heat insulation lining is connected to the inner wall of the heating chamber through a small number of reinforcing ribs, reducing the contact area with the heating chamber and reducing heat exchange.

[0010] For the optimization of the technical solution of the present utility model, the mirror protective cover is made of stainless steel, the surface of the mirror protective cover is polished, and through holes are evenly opened on the mirror protective cover. The mirror protective cover can reduce the heat radiation of part of the outer heat insulation cover, and the through holes are used for air flow to pass through to reduce the temperature and avoid damaging electrical components.

[0011] For the optimization of the technical solution of the present utility model, a plurality of exhaust ducts are provided at the top of the outer shell, and the exhaust ducts lead to the outside. An exhaust fan is provided in each exhaust duct; the exhaust fan and the negative pressure extraction pipe are always in a working state, and the blower enters the working state after the heating is completed. The hot air is directly discharged to the outside, which will not affect the ambient temperature of the workshop. The exhaust fan utilizes air convection to reduce the temperature inside the outer shell. The negative pressure extraction pipe reduces the air between the outer heat insulation cover and the heating chamber, reduces the heat conduction from the heating chamber to the outside, and most of the heat is directly discharged to the outside, avoiding the increase of the ambient temperature in the workshop. The blower accelerates the air flow between the outer heat insulation cover and the heating chamber, cools the heated heating chamber, and reduces the loss of electrical components.

[0012] The beneficial effects of the present utility model compared with the prior art are as follows:

[0013] 1. For the technical solution of the present utility model, by setting the structure of the outer heat insulation cover and using the negative pressure extraction pipe to extract air, the heat is directly discharged to the outside. At the same time, after the medium is reduced, the heat conducted from the heating chamber to the outer shell and the workshop is also reduced. The blower starts after the heating is completed, accelerates the air flow, and cools the heating chamber through heat exchange.

[0014] 2. By setting the structure of the mirror protective cover, part of the heat radiation of the outer heat insulation cover is reduced, and the temperature inside the outer shell is lowered.

[0015] 3. By setting the exhaust fan, using air convection to reduce the temperature inside the outer shell, and the heat is also directly discharged to the outside, which will not affect the ambient temperature of the workshop.

[0016] 4. By setting the structure of the inner lining, most of the space between the inner lining and the inner wall of the heating chamber is hollow, reducing heat exchange and avoiding the sharp increase of the ambient temperature of the outer shell and the workshop. Description of the Drawings

[0017] Figure 1 It is a schematic cross-sectional view of the heating chamber of Embodiment 1;

[0018] Figure 2 It is a schematic cross-sectional view of the heating chamber of Embodiment 2;

[0019] Figure 3 It is a schematic view of the outer shell of the present utility model with the side wall removed;

[0020] Among them: 1 - heating chamber, 2 - outer shell, 3 - heat insulation inner lining, 4 - outer heat insulation cover, 5 - mirror protective cover, 6 - exhaust fan, 7 - negative pressure extraction pipe, 8 - blower. Detailed Embodiment

[0021] Next, the technical solutions in the embodiments of the present utility model will be described in detail with reference to the attached drawings in the embodiments of the present utility model. Figures 1-3 ​ Example 1

[0022] As Figure 1 and Figure 3 shown, the utility model is a heating device with comprehensive heat insulation, including a heating chamber 1 and a housing 2. The heating chamber 1 and other electrical components are all installed on a frame. The housing 2 is integrally wrapped outside the frame and rests on the ground. The door of the heating chamber 1 is an inner door, and an outer door is provided at the corresponding position on the housing 2.

[0023] An outer heat insulation cover 4 is provided on the outer wall of the heating chamber 1. The outer heat insulation cover 4 is fixedly connected to the frame. There is a space between the outer heat insulation cover 4 and the outer wall of the heating chamber 1. The air has poor heat conduction, reducing the heat exchange of the heating chamber 1 to the outside.

[0024] A mirror protective cover 5 is provided on the outside of the outer heat insulation cover 4. The mirror protective cover 5 is fixedly connected to the frame and has a certain gap with the outer heat insulation cover 4. The mirror protective cover 5 is made of stainless steel and its surface is polished, which can reduce part of the heat radiation of the outer heat insulation cover 4.

[0025] A plurality of exhaust fans 6 are fixedly installed on the top of the housing 2. The exhaust fans 6 can extract the hot air in the housing 2 and directly discharge it to the outside through the exhaust duct without exchanging heat with the air in the constant temperature workshop, resulting in a change in the environmental temperature in the workshop; and through holes are evenly opened on the surface of the mirror protective cover 5. When the air flows, it can exchange heat with the mirror protective cover 5 and the outer heat insulation cover 4 to cool them down.

[0026] One end of the negative pressure exhaust pipe 7 is communicated with the outer heat insulation cover 4, and the other end leads to the outside. A negative pressure fan is provided on the negative pressure exhaust pipe 7. The air between the outer heat insulation cover 4 and the heating chamber 1 is extracted through the negative pressure fan, reducing the air medium and reducing the heat conduction of the heating chamber to the outside. And the extracted hot air is directly discharged to the outside, which will not have a great impact on the temperature of the constant temperature workshop.

[0027] The exhaust fans 6 and the negative pressure exhaust pipe 7 are always in a working state. Through the multi-layer design of the outer heat insulation cover 4 and the mirror protective cover 5, each layer can reduce the heat conduction to the outer layer. And through the action of the exhaust fans 6 and the negative pressure exhaust pipe 7, part of the conducted heat is discharged to the outside. The overall heat insulation efficiency is high. The temperature in the housing 2 always remains within a suitable range, without damaging the electrical components and affecting the service life, and at the same time, it will not affect the environmental temperature in the workshop.

[0028] A blower 8 is provided in the housing 2 and is communicated with the outer heat insulation cover 4. When the heating chamber 1 completes the heating work, the blower 8 starts to work, cooperating with the negative pressure exhaust pipe 7 to accelerate the air flow between the outer heat insulation cover 4 and the heating chamber 1. And the incoming air has a lower temperature and exchanges heat with the heating chamber 1 to accelerate the cooling speed of the heating chamber 1 and improve the cooling efficiency. And during this process, it will not affect the environmental temperature in the workshop.

[0029] Taking the temperature measured during actual use as an example, when the set temperature in the heating chamber 1 is 200 °C, the temperatures of other parts are measured as shown in the following table:

[0030]

[0031] Among them, inner doors A, B, and C are three different measurement positions of the inner door, and the distances from the heating chamber 1 gradually decrease. Support feet A and B are the support structures of the heating chamber 1, and the distances from the heating chamber 1 gradually decrease. The rear flange is a process interface and is connected to the heating chamber 1.

[0032] As can be seen from the above table, after heat insulation by the outer heat insulation cover 4, the conducted heat is reduced, and the temperature is also greatly reduced. Then, through the action of the exhaust fan 6 and using air convection, the temperature inside the outer shell 2 is always within a suitable range. The electrical components inside the outer shell 2 will not be damaged due to excessive temperature, and the temperature fluctuation on the surface of the outer shell 2 is small, and it will not cause a large change in the ambient temperature of the workshop. Embodiment 2

[0033] As Figures 1-2 shown, the utility model is a heating device with comprehensive heat insulation, including a heating chamber 1 and an outer shell 2. The heating chamber 1 and other electrical components are all installed on a frame. The outer shell 2 is integrally wrapped outside the frame and rests on the ground. The door of the heating chamber 1 is an inner door, and an outer door is provided at the corresponding position on the outer shell 2.

[0034] Since the working temperature during heating is higher than 200 °C, the heat conducted out by the heating chamber 1 increases. Therefore, a heat insulation lining 3 is provided on the inner wall of the heating chamber 1. There is a space between the heat insulation lining 3 and the inner wall of the heating chamber 1. They are fixed together by welding a small number of reinforcing ribs between them. Most of it is empty, and air is used as the medium. The heat conduction efficiency is low. The small number of reinforcing ribs makes the contact area small and the heat conduction slow, which can greatly reduce the heat transfer to the outside.

[0035] An outer heat insulation cover 4 is provided on the outer wall of the heating chamber 1. The outer heat insulation cover 4 is fixedly connected to the frame. There is a space between the outer heat insulation cover 4 and the outer wall of the heating chamber 1. Air has poor heat conduction, reducing the heat exchange of the heating chamber 1 to the outside.

[0036] A mirror protective cover 5 is provided on the outside of the outer heat insulation cover 4. The mirror protective cover 5 is fixedly connected to the frame and has a certain gap with the outer heat insulation cover 4. The mirror protective cover 5 is made of stainless steel and its surface is polished, which can reduce part of the heat radiation of the outer heat insulation cover 4.

[0037] Multiple exhaust fans 6 are fixedly installed at the top of the outer shell 2. The exhaust fans 6 can extract the hot air inside the outer shell 2 and directly discharge it outdoors through the exhaust duct without exchanging heat with the air in the constant-temperature workshop, thus preventing the ambient temperature in the workshop from changing. Moreover, through holes are evenly formed on the surface of the mirror protective cover 5, and when air flows, heat exchange can occur between the air and the mirror protective cover 5 and the outer heat insulation cover 4 to cool them down.

[0038] One end of the negative-pressure suction pipe 7 is communicated with the outer heat insulation cover 4, and the other end leads to the outdoors. A negative-pressure fan is arranged on the negative-pressure suction pipe 7 to extract the air between the outer heat insulation cover 4 and the heating cavity 1, reducing the air medium and the heat conducted outward from the heating cavity 1. Moreover, the extracted hot air is directly discharged outdoors without significantly affecting the temperature of the constant-temperature workshop.

[0039] The exhaust fans 6 and the negative-pressure suction pipe 7 are always in a working state. When the working temperature of the heating cavity 1 is too high, the device will first reduce the heat conducted outward from the heating cavity 1 through the heat insulation lining 3, and then the outer heat insulation cover 4 and the mirror protective cover 5 will further reduce the heat diffusion to the outer layer. And through the action of the exhaust fans 6 and the negative-pressure suction pipe 7, part of the conducted heat is discharged outdoors. The overall heat insulation efficiency is high, and the temperature inside the outer shell 2 always remains within a suitable range, without damaging the electrical components and affecting the service life, and at the same time, it will not affect the ambient temperature of the workshop.

[0040] The blower 8 is arranged in the outer shell 2 and is communicated with the outer heat insulation cover 4. When the heating cavity 1 finishes the heating work, the blower 8 starts to work and cooperates with the negative-pressure suction pipe 7 to accelerate the air flow between the outer heat insulation cover 4 and the heating cavity 1. And the incoming air has a lower temperature and exchanges heat with the heating cavity 1 to accelerate the cooling speed of the heating cavity 1 and improve the cooling efficiency. And during this process, it will not affect the ambient temperature of the workshop either.

[0041] The usage method of a heating device with comprehensive heat insulation in this embodiment is as follows:

[0042] Put the product to be heated into the heating cavity 1 and start the device. The temperature inside the heating cavity 1 rises. However, due to the functions of the heat insulation lining 3, the outer heat insulation cover 4, and the mirror protective cover 5, heat insulation is carried out layer by layer to reduce the heat conducted outward. The negative-pressure suction pipe 7 continuously extracts the air between the outer heat insulation cover 4 and the heating cavity 1 to further reduce the heat conducted outward. At the same time, the exhaust fans 6 continuously exhaust air, using air convection to reduce the temperature inside the outer shell 2 and discharge the hot air outdoors. Therefore, the temperature inside the outer shell 2 is always within a controllable range, without causing damage to the electrical components due to excessive temperature, and at the same time, it will not affect the ambient temperature of the workshop.

[0043] After the heating is completed, start the blower 8, cooperate with the negative pressure exhaust pipe 7 to accelerate the air flow, and quickly cool the heating chamber 1 through heat exchange. After the cooling is completed, take out the product that has completed heating and turn off the equipment.

[0044] The above embodiments are only used to illustrate the technical idea of the present invention, and the protection scope of the present invention cannot be limited thereby. Any changes made on the basis of the technical solution according to the technical idea proposed by the present invention shall fall within the protection scope of the present invention.

Claims

1. A comprehensive heat-insulating heating device, characterized in that: The invention comprises a heating chamber (1) and an outer shell (2), wherein the outer shell (2) is grounded, the heating chamber (1) is arranged in the outer shell (2), an outer heat insulation cover (4) is arranged on the outer wall of the heating chamber (1), a space between the outer heat insulation cover (4) and the outer wall of the heating chamber (1) is empty, a mirror protective cover (5) is arranged on the outer side of the outer heat insulation cover (4), one end of a negative pressure exhaust pipe (7) is connected to the outer heat insulation cover (4), and the other end leads to the outdoors, and a blower (8) is arranged in the outer shell (2) and is connected to the outer heat insulation cover (4).

2. A comprehensive heat-insulating heating device according to claim 1, characterized in that: An inner door is arranged at the front end of the heating chamber (1), and an outer door is arranged at a corresponding position of the outer shell (2).

3. A comprehensive heat-insulating heating device according to claim 1, characterized in that: The mirror protective cover (5) is made of stainless steel, the surface of the mirror protective cover (5) is polished, and through holes are evenly arranged on the mirror protective cover (5).

4. A comprehensive heat-insulating heating device according to claim 1, characterized in that: A plurality of exhaust ducts are arranged on the top of the housing (2), the exhaust ducts leading to the outdoors, and an exhaust fan (6) is arranged in each exhaust duct; the exhaust fan (6) and the negative pressure exhaust duct (7) are always in a working state, and the blower (8) enters a working state after heating is completed.

5. A comprehensive heat-insulating heating device, characterized in that: The invention comprises a heating chamber (1) and an outer shell (2), wherein the outer shell (2) is grounded, the heating chamber (1) is arranged in the outer shell (2), the inner wall of the heating chamber (1) is provided with a heat insulating lining (3), the outer wall of the heating chamber (1) is provided with an outer heat insulating cover (4), the space between the outer heat insulating cover (4) and the outer wall of the heating chamber (1) is empty, a mirror protective cover (5) is arranged on the outer side of the outer heat insulating cover (4), one end of a negative pressure exhaust pipe (7) is connected to the outer heat insulating cover (4), and the other end leads to the outdoors, and a blower (8) is arranged in the outer shell (2) and is connected to the outer heat insulating cover (4).

6. A comprehensive heat-insulating heating device according to claim 5, characterized in that: An inner door is arranged at the front end of the heating chamber (1), and an outer door is arranged at a corresponding position of the outer shell (2).

7. A comprehensive heat-insulating heating device according to claim 5, characterized in that: The heat insulating lining (3) is connected to the inner wall of the heating chamber (1) via a small number of reinforcing ribs.

8. A comprehensive heat-insulating heating device according to claim 5, characterized in that: The mirror protective cover (5) is made of stainless steel, the surface of the mirror protective cover (5) is polished, and through holes are evenly arranged on the mirror protective cover (5).

9. A comprehensive heat-insulating heating device according to claim 5, characterized in that: A plurality of exhaust ducts are arranged on the top of the housing (2), the exhaust ducts leading to the outdoors, and an exhaust fan (6) is arranged in each exhaust duct; the exhaust fan (6) and the negative pressure exhaust duct (7) are always in a working state, and the blower (8) enters a working state after heating is completed.

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