Novel heat preservation air blower

Abstract

The utility model discloses a novel heat preservation air blower, which relates to the field of air blowers and comprises an outer shell, an inner container, a heat insulation box cover, a heat insulation layer, an air inlet pipe, a volute and a motor, the heat insulation box cover, the inner container and the outer shell are detachably connected in sequence, the heat insulation layer is filled between the inner container and the outer shell, and the volute and the motor are both arranged inside the inner container. An annular air duct is arranged between the heat insulation layer and the inner container and surrounds the inner container, one end of the annular air duct is connected with an air inlet pipe, the other end of the annular air duct is provided with a first through hole, the air inlet pipe penetrates through the shell, the first through hole is connected to the inner container, and the air inlet pipe, the volute, the motor and the first through hole are sequentially arranged along the center line of the motor. An air inlet is formed in the end, close to the first through hole, of the volute. The annular air channel surrounds the inner container and the motor, heat generated when the motor works is used for preheating air in the air channel, and the temperature and the air pressure of the air are increased to be within the range of design indexes.

Description

Technical Field

[0001] The utility model relates to the field of blowers, in particular to a novel heat-insulating blower. Background Art

[0002] Because a blower contains a fan (comprised of a volute, centrifugal impeller, and motor), heat is generated internally during operation. Traditional blowers, however, direct airflow from the outside into the blower, continuously blowing against the motor while entering the blower, thus controlling the blower's operating temperature. However, when the blower is located in a cold environment, the lack of thermal insulation affects both the air and the motor inside the blower, causing the temperature to drop.

[0003] When switching the blower between normal and negative pressure modes, a flow restrictor valve must be installed on the air inlet pipe to reduce the flow rate of air into the volute. When the flow rate inside the blower is restricted, the pressure of the gas drawn into the volute drops below the design pressure due to the blower's internal temperature being too low, causing the pressure of the airflow discharged from the blower to drop. This results in unstable air pressure, and in severe cases, the blower may enter a negative pressure state.

[0004] Therefore, a new type of heat-insulating blower is proposed, which can insulate the air duct entering the blower and use the heat from the working motor to heat the gas inside the air duct, so that the temperature and pressure of the gas are increased to within the design index range. Utility Model Content

[0005] To achieve the above-mentioned objectives, the present invention adopts the following technical solutions: a new type of heat-insulating blower, comprising: an outer shell, an inner tank, an insulation box cover, an insulation layer, an air inlet pipe, a volute and a motor, the insulation box cover, the inner tank and the outer shell being detachably connected in sequence, the inner tank being sleeved inside the outer shell, one end of the inner tank being open, the insulation box cover being detachably arranged at the opening position of the inner tank, the insulation layer being filled between the inner tank and the outer shell, the volute and the motor being both arranged inside the inner tank, the insulation box cover, the volute and the motor being detachably connected in sequence, an annular air duct being provided between the insulation layer and the inner tank, the annular air duct being arranged around the inner tank, one end of the annular air duct being connected to the air inlet pipe, the other end of the annular air duct being provided with a first through hole, the air inlet pipe being passed through the outer shell, the first through hole being connected to the inner tank, the air inlet pipe, the volute, the motor and the first through hole being arranged in sequence along the center line of the motor, and an air inlet being provided at one end of the volute close to the first through hole.

[0006] Preferably, it further includes an air outlet pipe, which is passed through the heat insulation box cover and connected to the air outlet of the volute.

[0007] Preferably, it also includes a first baffle, and the air inlet pipe, volute, motor, first baffle and first through hole are arranged in sequence along the center line of the motor. The first baffle is slidably arranged inside the inner tank, and the sliding direction of the first baffle is perpendicular to the center line of the motor. The area of ​​the first baffle is smaller than the cross-section of the inner tank.

[0008] Preferably, a second baffle is also included, and the air inlet pipe, volute, motor, second baffle, first baffle and first through hole are arranged in sequence along the center line of the motor, and the second baffle is slidably arranged inside the inner tank. The second baffle is provided with a through hole array, and the through hole array includes a plurality of second through holes. The motor is projected into the through hole array along the center line of the motor, the area of ​​the first baffle is less than or equal to the area of ​​the second baffle, and the area of ​​the second baffle is smaller than the cross section of the inner tank.

[0009] Preferably, the thermal insulation box cover includes a cover plate and an insulation plate, the insulation plate is arranged at the center position of the cover plate, the opening position of the inner tank is concavely provided with a step groove outward, the insulation plate is arranged inside the step groove, and the annular air duct is clamped between the end of the step groove away from the thermal insulation box cover and the insulation layer, the insulation plate is a hollow rectangular structure, and the insulation layer is filled inside the insulation plate.

[0010] Preferably, a base is symmetrically provided inside the inner tank, and the base is provided with a first through slot and a second through slot. One end of the first baffle is slidably set inside the first through slot, and one end of the second baffle is slidably set inside the second through slot. The center lines of the first through slot and the second through slot are both perpendicular to the plane where the cover plate is located.

[0011] The first baffle and the second baffle are also detachably connected to the base via set screws. The first and second baffles each have an area half the cross-section of the inner container. The two set screws are spaced apart and centrally located on the base, allowing for adjustment of the positions of the first and second baffles.

[0012] Preferably, the width of the annular air duct is equal to the depth of the step groove.

[0013] Preferably, it also includes an electrical box and a wiring tube. The electrical box is detachably arranged on the surface of the cover plate away from the insulation plate. The wiring tube is passed through the insulation box cover. The two ends of the wiring tube are respectively connected to the inner tank and the inside of the electrical box. The lower end of the electrical box is provided with a wiring terminal, and the wiring terminal is electrically connected to the motor.

[0014] Preferably, it further comprises a centrifugal impeller, which is arranged inside the volute, and is transmission-connected to the motor, and the center line of the centrifugal impeller is parallel to the center line of the motor.

[0015] Preferably, the centrifugal impeller includes an impeller body, long blades and short blades, the long blades and short blades are arranged in a circular array inside the impeller body, the long blades and short blades are arranged alternately, the short blades are shorter than the long blades, and the long blades and the short blades are arranged on the same circumference at one end away from the center line of the impeller body.

[0016] The beneficial effects of this utility model include: maintaining the temperature of the gas entering the annular duct. The annular duct surrounds the inner tank and the motor, utilizing the heat from the motor to preheat the gas within the duct, raising the gas temperature and pressure to within the design range. As the gas enters the inner tank through the annular duct, it flows sequentially through the motor and volute, where the motor directly heats the gas, ensuring that the gas temperature and pressure remain within the design range.

[0017] Remove the heat-insulating cover and remove or install the first and second baffles from the inner tank. With the first baffle not perforated and the second baffle perforated, the blower can be switched between normal and negative pressure modes. Remove the first baffle and install the second baffle. The perforated second baffle limits the speed of airflow entering the blower, thereby limiting the air pressure. Installing both the first and second baffles further limits the speed of airflow entering the blower, placing the blower in a negative pressure mode. The positions of the first and second baffles are adjustable, allowing for flexible control of the speed of airflow entering the blower, thereby varying the internal air pressure. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The accompanying drawings further illustrate the present invention, but the embodiments in the accompanying drawings do not constitute any limitation to the present invention.

[0019] Figure 1 A schematic structural diagram of an embodiment of the present invention;

[0020] Figure 2 A cross-sectional view provided for an embodiment of the present utility model;

[0021] Figure numerals: 1: outer shell; 2: inner liner; 3: heat insulation box cover; 4: heat insulation layer; 5: annular air duct; 6: volute; 7: motor; 8: air inlet pipe; 9: air outlet pipe. DETAILED DESCRIPTION

[0022] The following is a detailed description of the specific embodiments of the present invention in conjunction with the accompanying drawings. It should be understood that the specific embodiments described herein are only used to illustrate and explain the present invention and are not intended to limit the present invention.

[0023] It should be noted that in the present invention, unless otherwise stated, when an element is referred to as being "fixed to" or "set on" another element, it may be directly on the other element or there may be an intermediate element. When an element is referred to as being "connected to" another element, it may be directly connected to the other element or there may be an intermediate element. The directional words used, such as "upper, lower, left, right" generally refer to the position of the element. Figure 1 "Inside and outside" refers to the inside and outside of the specific outline.

[0024] like Figure 1 -As shown in Figure 2, an embodiment of the present invention provides a new type of heat preservation blower, including: an outer shell, an inner tank, an insulation box cover, an insulation layer 4, an air inlet pipe 8, a volute 6 and a motor 7. The insulation box cover 3, the inner tank 2 and the outer shell 1 are detachably connected in sequence. The inner tank 2 is sleeved inside the outer shell 1. One end of the inner tank 2 is open. The insulation box cover 3 is detachably arranged at the opening position of the inner tank 2. The insulation layer 4 is filled between the inner tank 2 and the outer shell 1. The volute 6 and the motor 7 are both arranged inside the inner tank 2. The heat-insulating box cover 3, the volute 6 and the motor 7 are detachably connected in sequence. An annular air duct 5 is provided between the heat-insulating layer 4 and the inner tank 2. The annular air duct 5 is arranged around the inner tank 2. One end of the annular air duct 5 is connected to an air inlet pipe 8. The other end of the annular air duct 5 is provided with a first through hole. The air inlet pipe 8 is passed through the outer shell 1. The first through hole is connected to the inner tank 2. The air inlet pipe 8, the volute 6, the motor 7 and the first through hole are arranged in sequence along the center line of the motor 7. An air inlet is provided at one end of the volute 6 close to the first through hole.

[0025] The heat insulation box cover 3 further includes an air outlet pipe 9 , which is passed through the heat insulation box cover 3 and connected to the air outlet of the volute 6 .

[0026] It also includes a first baffle, and the air inlet pipe 8, volute 6, motor 7, first baffle and first through hole are arranged in sequence along the center line of the motor 7. The first baffle is slidably arranged inside the inner tank 2, and the sliding direction of the first baffle is perpendicular to the center line of the motor 7. The area of ​​the first baffle is smaller than the cross-section of the inner tank 2.

[0027] It also includes a second baffle, and the air inlet pipe 8, volute 6, motor 7, second baffle, first baffle and first through hole are arranged in sequence along the center line of the motor 7. The second baffle is slidably arranged inside the inner tank 2. The second baffle is provided with a through hole array, and the through hole array includes a plurality of second through holes. The motor 7 is projected into the through hole array along the center line of the motor 7. The area of ​​the first baffle is less than or equal to the area of ​​the second baffle, and the area of ​​the second baffle is smaller than the cross section of the inner tank 2.

[0028] The thermal insulation box cover 3 includes a cover plate and an insulation board. The insulation board is arranged at the center of the cover plate. The opening position of the inner tank 2 is concavely provided with a step groove outward. The insulation board is arranged inside the step groove. The annular air duct 5 is sandwiched between the end of the step groove away from the thermal insulation box cover 3 and the insulation layer 4. The insulation board is a hollow rectangular structure, and the insulation layer 4 is filled inside the insulation board.

[0029] A base is symmetrically provided inside the inner tank 2, and the base is provided with a first through slot and a second through slot. One end of the first baffle is slidably set inside the first through slot, and one end of the second baffle is slidably set inside the second through slot. The center lines of the first through slot and the second through slot are both perpendicular to the plane where the cover plate is located.

[0030] The first baffle and the second baffle are also detachably connected to the base via set screws. The first and second baffles each have an area half the cross-section of the inner container 2. The two set screws are spaced apart and centrally located on the base, allowing for adjustment of the positions of the first and second baffles.

[0031] The width of the annular air duct 5 is equal to the depth of the step groove.

[0032] It also includes an electrical box and a wiring tube. The electrical box is detachably arranged on the surface of the cover away from the insulation board. The wiring tube is passed through the insulation box cover 3. The two ends of the wiring tube are respectively connected to the inner tank 2 and the inside of the electrical box. The lower end of the electrical box is provided with a wiring terminal, and the wiring terminal is electrically connected to the motor 7.

[0033] It also includes a centrifugal impeller, which is arranged inside the volute 6. The centrifugal impeller is transmission-connected to the motor 7, and the center line of the centrifugal impeller is parallel to the center line of the motor 7.

[0034] The centrifugal impeller includes an impeller body, long blades and short blades. The long blades and short blades are arranged in a ring array inside the impeller body. The long blades and short blades are arranged alternately. The short blades are shorter than the long blades. The ends of the long blades and the short blades away from the center line of the impeller body are arranged on the same circumference.

[0035] The technical features of the above-described embodiments may be combined in any manner. To simplify the description, not all possible combinations of the technical features in the above-described embodiments are described. It should be noted that a person skilled in the art may make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements should be considered within the scope of this specification.

Claims

1. A new type of heat preservation blower, characterized by: include: The outer shell, the inner liner, the heat-insulating box cover, the insulation layer, the air inlet pipe, the volute and the motor, the heat-insulating box cover, the inner liner and the outer shell are detachably connected in sequence, the inner liner is sleeved inside the outer shell, one end of the inner liner is open, the heat-insulating box cover is detachably arranged at the opening position of the inner liner, the heat-insulating layer is filled between the inner liner and the outer shell, the volute and the motor are both arranged inside the inner liner, the heat-insulating box cover, the volute and the motor are detachably connected in sequence, an annular air duct is provided between the insulation layer and the inner liner, the annular air duct is arranged around the inner liner, one end of the annular air duct is connected to the air inlet pipe, the other end of the annular air duct is provided with a first through hole, the air inlet pipe is provided through the outer shell, the first through hole is connected to the inner liner, the air inlet pipe, the volute, the motor and the first through hole are arranged in sequence along the center line of the motor, and an air inlet is provided at one end of the volute close to the first through hole.

2. The novel heat preservation blower according to claim 1 is characterized in that: It also includes an air outlet pipe, which is passed through the heat insulation box cover and connected to the air outlet of the volute.

3. The novel heat preservation blower according to claim 2 is characterized in that: It also includes a first baffle, and the air inlet pipe, volute, motor, first baffle and first through hole are arranged in sequence along the center line of the motor. The first baffle is slidably arranged inside the inner tank, and the sliding direction of the first baffle is perpendicular to the center line of the motor. The area of ​​the first baffle is smaller than the cross-section of the inner tank.

4. The novel heat preservation blower according to claim 3 is characterized in that: It also includes a second baffle, and the air inlet pipe, volute, motor, second baffle, first baffle and first through hole are arranged in sequence along the center line of the motor. The second baffle is slidably arranged inside the inner tank. The second baffle is provided with a through hole array, and the through hole array includes a plurality of second through holes. The motor is projected into the through hole array along the center line of the motor. The area of ​​the first baffle is less than or equal to the area of ​​the second baffle, and the area of ​​the second baffle is smaller than the cross section of the inner tank.

5. The novel heat preservation blower according to claim 4 is characterized in that: The thermal insulation box cover includes a cover plate and an insulation plate. The insulation plate is arranged at the center of the cover plate. The opening position of the inner tank is concavely provided with a step groove outward. The insulation plate is arranged inside the step groove. The annular air duct is clamped between the end of the step groove away from the thermal insulation box cover and the insulation layer. The insulation plate is a hollow rectangular structure, and the insulation layer is filled inside the insulation plate.

6. The novel heat preservation blower according to claim 5 is characterized in that: A base is symmetrically provided inside the inner tank, and a first through slot and a second through slot are provided on the base. One end of the first baffle is slidably set inside the first through slot, and one end of the second baffle is slidably set inside the second through slot. The center lines of the first through slot and the second through slot are both perpendicular to the plane where the cover plate is located.

7. The novel heat preservation blower according to claim 6 is characterized in that: The width of the annular air duct is equal to the depth of the step groove.

8. The novel heat preservation blower according to claim 6 is characterized in that: It also includes an electrical box and a wiring tube. The electrical box is detachably arranged on the surface of the cover plate away from the insulation plate. The wiring tube is passed through the insulation box cover. The two ends of the wiring tube are respectively connected to the inner tank and the inside of the electrical box. The lower end of the electrical box is provided with a wiring terminal, and the wiring terminal is electrically connected to the motor.

9. The novel heat preservation blower according to claim 1 is characterized in that: It also includes a centrifugal impeller, which is arranged inside the volute and is transmission-connected to the motor. The center line of the centrifugal impeller is parallel to the center line of the motor.

10. The novel heat preservation blower according to claim 9, characterized in that: The centrifugal impeller includes an impeller body, long blades and short blades. The long blades and short blades are arranged in a ring array inside the impeller body. The long blades and short blades are arranged alternately. The short blades are shorter than the long blades. The ends of the long blades and the short blades away from the center line of the impeller body are arranged on the same circumference.

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