Heat preservation fan

Abstract

The utility model relates to the technical field of fans, in particular to a heat preservation fan. Comprising a shell and a driving device, the machine shell comprises an inner shell and an outer shell, a cavity is formed between the inner shell and the outer shell, and a first heat insulation layer, a second heat insulation layer and a third heat insulation layer are sequentially arranged in the cavity from inside to outside; a filtering mechanism is arranged at the air inlet; the filtering mechanism comprises a first filtering layer, a second filtering layer and a third filtering layer, and the first filtering layer, the second filtering layer and the third filtering layer are sequentially arranged at the air inlet from inside to outside; the first heat insulation layer, the second heat insulation layer and the third heat insulation layer are arranged in the wall of the machine shell, the heat insulation effect is good, the temperature in the machine shell can be effectively prevented from being transmitted to the outer wall of the machine shell, and then the safety accident that workers are scalded is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of fans, in particular to a heat-insulating fan. Background Art

[0002] A fan is a machine that relies on the input mechanical energy to increase the gas pressure and pump the gas. It is a driven fluid machine. Fans are widely used in factories, mines, tunnels, cooling towers, vehicles, ships and buildings for ventilation, dust removal and cooling, ventilation and induced draft of boilers and industrial furnaces; cooling and ventilation in air conditioning equipment and household electrical appliances; drying and selection of grains, air source of wind tunnels and inflation and propulsion of hovercrafts, etc.

[0003] Currently, based on the application of boilers, fans are usually used to transport hot air into the oven. However, the existing fans have poor heat insulation effect, and the heat inside the fan is easily transmitted to the outer wall of the fan, which is likely to cause safety accidents of scalding workers. Secondly, when the fan extracts hot air, the hot air may be mixed with dust or peculiar smell during the pipeline transportation, resulting in pollution and uncleanness of the gas, which greatly reduces the production quality of products in the oven. Based on this, we propose a heat-insulating fan. Summary of the Utility Model

[0004] Aiming at the deficiencies of the prior art, the utility model provides a heat-insulating fan. After the structure of the fan is improved, the problems raised in the above background art can be effectively solved.

[0005] The technical solution of the utility model is as follows:

[0006] A heat-insulating fan includes a casing and a driving device; the driving device is arranged outside the casing, the driving device is connected with a rotating shaft through a pulley mechanism, the other end of the rotating shaft is fixedly connected with an impeller, and the impeller is arranged inside the casing;

[0007] The casing includes an inner casing and an outer casing, a cavity is formed between the inner casing and the outer casing, and a first heat-insulating layer, a second heat-insulating layer and a third heat-insulating layer are sequentially arranged inside the cavity from inside to outside;

[0008] One end of the casing is provided with an air inlet, the other end of the casing is provided with an air outlet, and a filtering mechanism is arranged at the air inlet;

[0009] The filtering mechanism includes a first filtering layer, a second filtering layer and a third filtering layer, and the first filtering layer, the second filtering layer and the third filtering layer are sequentially arranged at the air inlet from inside to outside.

[0010] Furthermore, the heat-insulating fan further includes a mounting rack, and the casing and the driving device are respectively fixedly installed on the mounting rack.

[0011] Furthermore, a sealing shell is provided on the outer side of the pulley mechanism, a shaft sleeve is provided on the outer side of the rotating shaft and between the machine shell and the sealing shell, one end of the shaft sleeve is sealingly connected to the sealing shell, and the other end of the shaft sleeve is sealingly connected to the machine shell.

[0012] Furthermore, the first heat insulation layer is a fiberglass cloth layer; the second heat insulation layer is an aluminum foil layer; the third heat insulation layer is a heat insulation cotton layer; the first heat insulation layer, the second heat insulation layer and the third heat insulation layer are fixed to each other by bonding.

[0013] Furthermore, the thickness of the fiberglass cloth layer is 3 mm; the thickness of the aluminum foil layer is 2 mm; the thickness of the heat insulation cotton layer is 5 mm.

[0014] Furthermore, the first filter layer is a filter cotton layer; the second filter layer is an activated carbon layer; the third filter layer is a filter mesh layer.

[0015] Furthermore, the filter mesh layer is fixedly installed at the air inlet, and the activated carbon layer and the filter cotton layer are adhesively bonded to the inner side of the filter mesh layer in sequence.

[0016] Furthermore, the driving device is a motor.

[0017] The beneficial effects of the present utility model are as follows:

[0018] Compared with the prior art, the present utility model has better heat insulation and heat preservation effects by providing a first heat insulation layer, a second heat insulation layer and a third heat insulation layer in the wall of the machine shell. During the process of extracting hot air, it can effectively prevent the temperature inside the machine shell from being transmitted to the outer wall of the machine shell, thereby avoiding the occurrence of safety accidents of scalding staff. Secondly, by providing a first filter layer, a second filter layer and a third filter layer at the air inlet, the filtering and adsorption effects are better, and it can effectively filter and adsorb dust impurities, peculiar smells and harmful gases in the gas, etc., making the extracted gas pollution-free and relatively clean, thereby greatly improving the production quality of the products in the oven for the extracted hot air. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is a schematic structural diagram of the present utility model;

[0020] Figure 2 is a schematic structural diagram of another perspective of the present utility model;

[0021] Figure 3 is a front sectional view of the present utility model;

[0022] Figure 4 is a side sectional view of the present utility model.

[0023] In the figure, 1 is the casing; 2 is the driving device; 3 is the impeller; 4 is the inner casing; 5 is the outer casing; 6 is the first heat insulation layer; 7 is the second heat insulation layer; 8 is the third heat insulation layer; 9 is the air inlet; 10 is the air outlet; 11 is the filtering mechanism; 12 is the first filter layer; 13 is the second filter layer; 14 is the third filter layer; 15 is the mounting bracket; 16 is the sealing shell; 17 is the shaft sleeve. Detailed implementation manners

[0024] The following further describes the detailed implementation manners of the present utility model in conjunction with the accompanying drawings:

[0025] As Figures 1-4 shown,

[0026] A heat-insulating fan includes a casing 1 and a driving device 2; the driving device 2 is disposed outside the casing 1, the driving device 2 is connected to a rotating shaft through a pulley mechanism, the other end of the rotating shaft is fixedly connected with an impeller 3, and the impeller 3 is disposed inside the casing 1; the casing 1 includes an inner casing 4 and an outer casing 5, a cavity is formed between the inner casing 4 and the outer casing 5, and a first heat insulation layer 6, a second heat insulation layer 7 and a third heat insulation layer 8 are sequentially disposed inside the cavity from inside to outside; an air inlet 9 is disposed at one end of the casing 1, an air outlet 10 is disposed at the other end of the casing 1, and a filtering mechanism 11 is disposed at the air inlet 9; the filtering mechanism 11 includes a first filter layer 12, a second filter layer 13 and a third filter layer 14, and the first filter layer 12, the second filter layer 13 and the third filter layer 14 are sequentially disposed at the air inlet 9 from inside to outside; in this embodiment, by providing the first heat insulation layer 6, the second heat insulation layer 7 and the third heat insulation layer 8, it has strong heat insulation performance, and heat is not easily transmitted from the inside of the casing 1 to the outer wall of the casing 1, thereby ensuring the personal safety of the staff; secondly, the provided first filter layer 12, the second filter layer 13 and the third filter layer 14 can filter and adsorb dust impurities, odors and harmful gases in the gas, etc., thereby greatly improving the cleanliness of the gas.

[0027] As a preferred implementation manner; the heat-insulating fan further includes a mounting bracket 15, and the casing 1 and the driving device 2 are respectively fixedly mounted on the mounting bracket 15; by providing the mounting bracket 15, the casing 1 and the driving device 2 can be effectively mounted, and the pulley mechanism can be effectively mounted to realize transmission; it is worth mentioning that: the pulley mechanism is a mechanical mechanism commonly used in the prior art, and its structure will not be described in detail herein.

[0028] As a preferred embodiment, a sealing shell 16 is arranged on the outer side of the pulley mechanism. A shaft sleeve 17 is arranged between the outer side of the rotating shaft and between the machine shell 1 and the sealing shell 16. One end of the shaft sleeve 17 is hermetically connected to the sealing shell 16, and the other end of the shaft sleeve 17 is hermetically connected to the machine shell 1. By providing the sealing shell 16 and the shaft sleeve 17, it is possible to effectively prevent dust and other impurities from entering the pulley mechanism and the rotating shaft, thereby effectively ensuring that the pulley mechanism and the rotating shaft can work normally and extending their service life.

[0029] As a preferred embodiment, the first heat insulation layer 6 is a fiberglass cloth layer; the second heat insulation layer 7 is an aluminum foil layer; the third heat insulation layer 8 is a heat insulation cotton layer; the first heat insulation layer 6, the second heat insulation layer 7 and the third heat insulation layer 8 are fixed to each other by bonding. It can be understood that fiberglass cloth, aluminum foil and heat insulation cotton all have good heat insulation and heat preservation performance. When used in combination, the heat insulation and heat preservation effect can be further improved, which is better than the effect of using only heat insulation cotton.

[0030] As a preferred embodiment, the thickness of the fiberglass cloth layer is 3 mm; the thickness of the aluminum foil layer is 2 mm; the thickness of the heat insulation cotton layer is 5 mm. By adopting the above thickness combination, the best heat insulation effect can be achieved with the same thickness and material usage.

[0031] As a preferred embodiment, the first filter layer 12 is a filter cotton layer; the second filter layer 13 is an activated carbon layer; the third filter layer 14 is a filter mesh layer. It can be understood that the filter cotton used in this application is high-temperature resistant filter cotton. This filter cotton is made of long glass fibers and is uniformly laminated in a non-woven manner. The air outlet surface has been specially treated to solve the problem of fiber shedding of ordinary high-temperature resistant fiberglass cotton. Its temperature resistance range is usually between 270 - 300 °C, ensuring the performance of not aging during long-term use in a high-temperature environment; while the high-temperature resistance range of activated carbon is generally between 300 °C and 450 °C. Therefore, the use of filter cotton and activated carbon can actually cope with high-temperature gases. In addition, both filter cotton and filter mesh can effectively filter impurities and dust, and the activated carbon layer arranged in the middle can effectively adsorb odors and harmful gases, making the gas cleaner.

[0032] As a preferred embodiment, the filter mesh layer is fixedly installed at the air inlet 9, and the activated carbon layer and the filter cotton layer are sequentially bonded to the inner side of the filter mesh layer. During the installation process, first fix and install the filter mesh, then bond the activated carbon to the filter mesh, and finally bond the filter cotton to the activated carbon. When bonding, the circumferential end bonding method is adopted, so that the first filter layer 12, the second filter layer 13 and the third filter layer 14 are not affected by the bonding layer.

[0033] The working principle of the present utility model is as follows: First, start the driving device 2. The driving device 2 drives the pulley mechanism to rotate, thereby driving the rotating shaft to rotate, and finally driving the impeller inside the casing 1 to rotate. Then, air intake is carried out at the air inlet 9, and exhaust is carried out at the air outlet 10.

[0034] It should be noted that the main problems in the prior art are as follows: The heat insulation effect of the existing fan is not good, and the heat inside the fan is easily transmitted to the outer wall of the fan, which is likely to cause safety accidents of scalding the staff. Secondly, when the fan extracts hot air, the hot air may be mixed with dust or peculiar smell during the pipeline transportation, resulting in the pollution and uncleanness of the gas, which greatly reduces the production quality of the products in the oven.

[0035] Therefore, after the improvement of this application, by providing a first heat insulation layer 6, a second heat insulation layer 7 and a third heat insulation layer 8 inside the wall of the casing 1, the heat insulation and heat preservation effect is better. During the process of using and extracting hot air, it can effectively prevent the temperature inside the casing 1 from being transmitted to the outer wall of the casing 1, thereby avoiding the occurrence of safety accidents of scalding the staff. Secondly, by providing a first filter layer 12, a second filter layer 13 and a third filter layer 14 at the air inlet 9, the filtering and adsorption effect is better, and it can effectively filter and adsorb dust impurities, peculiar smell, harmful gases, etc. in the gas, making the extracted gas pollution-free and relatively clean, thereby greatly improving the production quality of the hot air extracted in the oven for the products.

[0036] The above embodiments are only descriptions of the preferred embodiments of the present utility model, and do not limit the scope of the present utility model. Without departing from the design spirit of the present utility model, various deformations and improvements made by those of ordinary engineering and technical personnel in the art to the technical solutions of the present utility model shall fall within the protection scope determined by the claims of the present utility model.

Claims

1. A thermal insulation fan, comprising a housing and a driving device; a driving device is arranged outside the housing, the driving device is connected to a rotating shaft through a pulley mechanism, the other end of the rotating shaft is fixedly connected with an impeller, and the impeller is arranged inside the housing; characterized in that: The housing comprises an inner housing and an outer housing, a cavity is formed between the inner housing and the outer housing, and a first heat insulation layer, a second heat insulation layer and a third heat insulation layer are sequentially arranged inside the cavity from inside to outside; One end of the housing is provided with an air inlet, the other end of the housing is provided with an air outlet, and a filtering mechanism is arranged at the air inlet; The filtering mechanism comprises a first filtering layer, a second filtering layer and a third filtering layer, and the first filtering layer, the second filtering layer and the third filtering layer are sequentially arranged at the air inlet from inside to outside.

2. The thermal insulation fan according to claim 1, characterized in that: The thermal insulation fan further comprises a mounting frame, and the housing and the driving device are respectively fixedly mounted on the mounting frame.

3. The insulation blower according to claim 2, characterized in that: A sealing housing is arranged outside the pulley mechanism, a shaft sleeve is arranged outside the rotating shaft and between the housing and the sealing housing, one end of the shaft sleeve is hermetically connected with the sealing housing, and the other end of the shaft sleeve is hermetically connected with the housing.

4. The insulation fan according to claim 3, wherein: The first heat insulation layer is a fiberglass cloth layer; the second heat insulation layer is an aluminum foil layer; the third heat insulation layer is a heat insulation cotton layer; the first heat insulation layer, the second heat insulation layer and the third heat insulation layer are fixed to each other by bonding.

5. The insulation fan according to claim 4, characterized in that: The thickness of the fiberglass cloth layer is 3 mm; the thickness of the aluminum foil layer is 2 mm; the thickness of the heat insulation cotton layer is 5 mm.

6. The thermal insulation blower according to claim 5, characterized in that: The first filtering layer is a filter cotton layer; the second filtering layer is an activated carbon layer; the third filtering layer is a filter mesh layer.

7. The insulation blower according to claim 6, wherein: The filter mesh layer is fixedly mounted at the air inlet, and the activated carbon layer and the filter cotton layer are sequentially bonded to the inner side of the filter mesh layer.

8. The insulation blower according to claim 7, characterized in that: The driving device is a motor.

Images