Positive pressure hood air feeder

Abstract

The utility model discloses a positive pressure hood blower, which relates to the technical field of blowers, and comprises a blower, a shell, a filter element assembly, a battery assembly and a control unit, the shell is provided with an air inlet and an air outlet, the filter element assembly and the blower are detachably connected in the shell, the filter element assembly is positioned on the inner side of the air inlet, and the battery assembly is positioned on the inner side of the air outlet. The air outlet end of the fan is connected with the air outlet in a sealed mode, the air inlet end of the fan is located on one side of the filter element assembly so that air filtered by the filter element assembly can enter the fan, the battery assembly is detachably connected to one side of the shell, the air outlet is communicated with a connector of the positive pressure head cover through the ventilation pipe assembly, and a control unit is arranged in the shell. The fan and the battery assembly are both in communication connection with the control unit. The filter element and the battery in the air feeder are detachable and convenient to replace.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of air supply fan, in particular to a positive pressure head cover air supply fan. BACKGROUND

[0002] The positive pressure head cover is a full name of power air supply type positive pressure biological protection head cover, is a kind of breathing system and head protection equipment for providing clean breathing air and can keep internal gas pressure higher than ambient gas pressure, mainly used for the head high-level protection of personnel contacting or possibly contacting highly pathogenic microorganisms, compared with face screen, N95 mask and goggles and other medical protective articles, the protection level of positive pressure head cover is higher. However, the filter screen of the existing fan, battery is not detachable or inconvenient to replace. Therefore, a filter element, battery replacement is needed. SUMMARY

[0003] The utility model aims at providing a kind of positive pressure head cover air supply fan, to solve the problems existing in the prior art, make filter element, battery detachable, and it is convenient to replace.

[0004] To achieve the above object, the utility model provides the following scheme:

[0005] The utility model provides a kind of positive pressure head cover air supply fan, including fan, shell, filter element assembly, battery assembly and control unit, the shell is provided with air inlet and air outlet, the shell is detachably connected with the filter element assembly and the fan by buckle, the filter element assembly is located the air inlet inside, the air outlet end of the fan is sealedly connected with the air outlet, and the air inlet end is located one side of the filter element assembly, so that the air filtered by the filter element assembly can enter the fan, the battery assembly is detachably connected to one side of the shell, the air outlet is used to be communicated with the interface of positive pressure head cover by ventilation pipe assembly, the shell is provided with the control unit, and the fan, the battery assembly are all connected with the control unit.

[0006] Preferably, the shell includes face cover, box shell and back cover, one end of the box shell is connected with the face cover by clamping, and the other end is connected with the back cover by bolt, the air inlet is provided on the face cover, and the air outlet is provided on the box shell.

[0007] Preferably, one side of the box shell is provided with the installation groove of the filter element assembly, one end of the installation groove is provided with clamping column, and the other end is provided with press clamping groove by sliding, one end of the filter element assembly is provided with snap ring, and the other end is provided with clamping hook, the snap ring is hung on the clamping column, and the clamping hook can be clamped in the press clamping groove, the press plate of the press clamping groove is exposed, and the reset spring is arranged between the press plate and the box shell, and the fan is clamped between the box shell and the back cover.

[0008] Preferably, the control unit is arranged in the shell, and the fan and the battery assembly are in communication connection with the control unit.

[0009] Preferably, the bottom of the shell is provided with the battery assembly through a push-pull buckle, and the top of the shell is provided with a display panel and control buttons of the control unit.

[0010] Preferably, the battery assembly comprises a shell and a storage battery, the storage battery is arranged in a groove of the shell, opposite two side walls of the groove are respectively provided with a clamping groove, one end of the storage battery is provided with a plug-in protrusion, the other end is slidably provided with a push-pull buckle, the exposed upper end of the push-pull buckle is a push plate, and the lower end is a clamping hook, the plug-in protrusion and the clamping hook can be respectively clamped with the clamping groove, and the storage battery is electrically connected with the control unit in the shell through a power plug.

[0011] Preferably, the battery assembly is provided with a charging port.

[0012] Preferably, the filter element assembly comprises a filter element and a mounting frame, the filter element is arranged in the mounting frame, the mounting frame is clamped in a mounting groove of the shell, and the mounting groove is in communication with the fan through a ventilation hole; one side of the mounting frame is a hollow surface, the hollow surface is provided with a filter screen, and the mounting frame is open on the side opposite to the hollow surface and is provided with a flange, and a sealing gasket is arranged between the flange and the mounting groove.

[0013] Preferably, the ventilation pipe assembly comprises a ventilation pipe and a connecting head, and two ends of the ventilation pipe are respectively threadedly connected with the air outlet and the interface of the positive pressure head cover through the connecting head; the ventilation pipe is a corrugated pipe.

[0014] Preferably, the back surface of the shell is provided with a bandage, the end of the bandage is connected through a back strap and mother buckle, and the length adjustment range of the bandage is 30cm-100cm.

[0015] Preferably, the back surface of the shell is connected with a waist support pad, the length of the waist support pad is greater than the length of the shell, and the two ends of the waist support pad are respectively connected with a bandage.

[0016] The utility model discloses relative to prior art has obtained following technical effect:

[0017] The filter element and the battery in the air supply fan are detachably connected to the shell through the buckle, the filter element and the battery are convenient to replace, the operation is simple, and the use and maintenance are convenient. BRIEF DESCRIPTION OF DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed in the embodiments will be briefly introduced as follows. Obviously, the drawings in the following description only constitute some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained from these drawings without creative labor.

[0019] Figure 1 It is a structure schematic view of the positive pressure head cover air supply fan in the embodiment of the present application.

[0020] Figure 2 It is an exploded structure schematic view of the positive pressure head cover air supply fan in the embodiment of the present application.

[0021] Figure 3 It is a local structure schematic view of the positive pressure head cover air supply fan in the embodiment of the present application. Figure 1

[0022] Figure 4 It is a local structure schematic view of the positive pressure head cover air supply fan in the embodiment of the present application. Figure 2

[0023] Figure 5 It is a local structure schematic view of the positive pressure head cover air supply fan in the embodiment of the present application. Figure 3

[0024] Figure 6 It is a structure schematic view of the filter core assembly in the embodiment of the present application.

[0025] Figure 7 It is an exploded structure schematic view of the filter core assembly in the embodiment of the present application.

[0026] Figure 8 It is a structure schematic view of the battery assembly in the embodiment of the present application.

[0027] Figure 9 It is a structure enlarged schematic view of A in the embodiment of the present application. Figure 8

[0028] In the figure: 1 - box shell, 2 - face cover, 3 - rear cover, 4 - fan, 5 - filter core assembly, 6 - battery assembly, 7 - mounting groove, 8 - pressing clamping groove, 9 - push-pull buckle, 10 - bandage, 11 - waist support pad, 12 - ventilation pipe, 13 - connecting head, 14 - clasp ring, 15 - clasp hook, 16 - clamping column, 17 - clamping groove, 18 - mounting frame, 19 - filter screen, 20 - filter core, 21 - control unit, 22 - display panel, 23 - charger, 24 - sealing gasket, 25 - air inlet, 26 - air outlet, 27 - plug-in protrusion. DETAILED DESCRIPTION

[0029] ​​​​With reference to the accompanying drawings, the technical solutions in the embodiments of the present application will be clearly and completely described below, obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all the other embodiments obtained by those skilled in the art without creative labor fall within the scope of the present application.

[0030] The utility model discloses a positive pressure head cover air blower, to solve the prior art problem, make filter core, battery detachable, and convenient to replace.

[0031] In order to make the above-mentioned purpose, features and advantages of the present application more obvious and easy to understand, the present application will be further described in detail below with reference to the drawings and specific embodiments.

[0032] Embodiment one

[0033] As Figures 1 to 9 Indicated, the present embodiment provides a positive pressure head cover air blower, including fan 4, shell, filter core subassembly 5, battery subassembly 6 and control unit 21, be provided with air inlet 25 and air outlet 26 on the shell, the shell is detachably connected with filter core subassembly 5 and fan 4 through buckle, filter core subassembly 5 is located inside air inlet 25, the air outlet end of fan 4 is sealedly connected with air outlet 20, and the air inlet end is located at one side of filter core subassembly 5, so that the wind after being filtered by filter core subassembly 5 can enter fan 4, battery subassembly 6 is detachably connected to one side of the shell, and air outlet 26 is used to be communicated with the interface of positive pressure head cover through ventilation pipe 12 assembly. The inside of air inlet 25 refers to the space between filter core subassembly 5 and the air inlet end of fan 4 on the shell.

[0034] As an optional scheme, the shell includes face cover 2, box shell 1 and rear cover 3 in the present embodiment, one end of box shell 1 is connected with face cover 2 by clamping, and the other end is connected with rear cover 3 by bolt, the lower portion of face cover 2 is provided with oval air inlet 25, and the edge of face cover 2 is preferably a conical surface, the air inlet 25 is arranged on the conical surface, so that dust can be avoided in the air inlet 25, and the upper portion of box shell 1 is provided with air outlet 26.

[0035] As an optional scheme, the mounting groove 7 of filter core subassembly 5 is arranged on one side of box shell 1 in the present embodiment, one end of mounting groove 7 is provided with clamping column 15, and the other end is slidably provided with pressing clamping groove 8, one end of filter core subassembly 5 is provided with clamping ring 14, and the other end is provided with clamping hook 15, the clamping ring 14 is hung on clamping column 15, and the clamping hook 15 can be clamped in pressing clamping groove 8, the pressing plate of pressing clamping groove 8 is exposed and provided with reset spring between box shell 1, and box shell 1 and rear cover 3 are clamped with fan 4, so that fan 4 is fixed and positioned.

[0036] As an alternative, the shell in the embodiment is provided with a control unit 21, the fan 4 and the battery assembly 6 are in communication connection with the control unit 21, the bottom of the shell (the box shell 1) is clamped with the battery assembly 6 through the push-pull buckle 9, and the top of the box shell 1 is provided with a display panel 22 and a control button 23 of the control unit 21. The display panel 22 can realize the power and the air volume, including five power indicator lights and an air volume key. The control unit 21 further includes a low power alarm and a blockage alarm function. When the low power alarm occurs, one indicator light will flicker at a low frequency and respond for a long time each time. When the blockage alarm occurs, the five power indicator lights will be bright and flicker, and the sound will be urgent. In the embodiment, the control unit 21 sets the low power alarm parameter according to the program, and triggers the corresponding sound and light alarm to issue an alarm when the alarm value is reached. The control unit 21 can receive the feedback signal of the fan 4 and control and adjust the rotating speed of the fan 4.

[0037] As an alternative, the battery assembly 6 in the embodiment includes a shell and a storage battery. The storage battery is arranged in a groove of the shell. Opposite two side walls of the groove are respectively provided with a clamping groove 17. One end of the storage battery is provided with a plug-in protrusion 27, and the other end is slidably provided with a push-pull buckle 9. The exposed upper end of the push-pull buckle 9 is a push plate, and the lower end is a clamping hook 15. The plug-in protrusion 27 and the clamping hook 15 can be clamped with a clamping groove 17, respectively. The storage battery is electrically connected with the control unit 21 in the shell through a power plug. In the embodiment, the control unit 21 can control the rotating speed change of the fan 4 by adjusting the power voltage, thereby realizing the function of adjusting the air volume.

[0038] As an alternative, the battery assembly 6 in the embodiment is provided with a charging port. In the embodiment, the charging port is connected with a charger 23. The power adapter specification of the charger 23 is: input 220V, 50-60Hz, 0.8A; output 13.1V, 2A. The power adapter can directly charge the battery through the seat more quickly. When the battery is fully charged, the indicator light changes from red to green. The storage battery is preferably a rechargeable lithium ion battery. The rechargeable lithium ion battery can work for about 7 hours under the condition of the highest air volume of three gears, and can work for more than 12 hours under the condition of the low air volume of one gear.

[0039] As an optional solution, the filter core assembly 5 in the embodiment includes a filter core 20 and a mounting frame 18, the filter core 20 is arranged in the mounting frame 18, the mounting frame 18 is clamped in the mounting groove 7 of the shell, the mounting groove 7 is communicated with the fan 4 through a vent; one side of the mounting frame 18 is a hollow surface, the hollow surface is provided with a filter screen 19, the side of the mounting frame 18 opposite to the hollow surface is open and provided with a flange, a sealing gasket 24 is arranged between the flange and the mounting groove 7, there is a gap between the filter core assembly 5 and the bottom of the mounting groove 7, and the gap forms an air duct. The filter core assembly 5 is locked by pressing and advancing the fixing buckle, so that the air duct is closed; wherein the sealing gasket 24 can ensure that all the air is filtered by the filter core 20, so as to prevent the air from entering the gap between the filter core 20 and the shell; the material of the filter screen 19 is preferably PVC material, the size is 151mm*79mm, and the mesh number is 14 meshes, which can pre-filter the animal hair and foreign matters with large volume as primary efficiency filtering, so as to avoid blocking the filter core 20; the filter core 20 preferably uses a H14 level high efficiency filter membrane, and a disposable filter core is preferably used, the filter core 20 cannot be sterilized and cleaned, which will cause the protection function to be invalid; when the filter core 20 is replaced, a disposable glove is needed to be worn to take out the old filter core 20, and the hand sterilization is needed to be done.

[0040] As an optional solution, the ventilation pipe assembly in the embodiment includes a ventilation pipe 12 and a connecting head 13, the two ends of the ventilation pipe 12 are respectively threadedly connected with the outlet 26 and the interface of the positive pressure head cover through the connecting head 13; the ventilation pipe 12 is a corrugated flexible pipe. The inner diameter of the ventilation pipe in the embodiment is 35mm, the full length is 100cm, and the extension can reach 110cm-120cm, and the joint with greater hardness at the two ends of the ventilation pipe 12 should be stressed during use, and the ventilation pipe 12 can be taken down alone for sterilization.

[0041] As an optional solution, a belt 10 is arranged on the back of the shell, the two ends of the belt 10 are connected through a back zipper, and the length adjustment range of the belt is 30cm-100cm. In the embodiment, the waistband is connected through a back zipper, so that the weight of the device is evenly distributed on the waist of the user, and the length range is 75cm-180cm; the belt 10 is preferably a knitted belt, and the length is 140cm.

[0042] As an optional solution, a waist support pad 11 is connected to the back of the shell, the length of the waist support pad 11 is greater than the length of the shell, and the two ends of the waist support pad 11 are respectively connected with a belt 10. In the embodiment, the close-fitting part adopts the waist support pad 11 designed according to ergonomics, so that the comfort of wearing on the waist is realized.

[0043] Embodiment two

[0044] The positive pressure head cover blower of the embodiment is used, the ventilation pipe 12 is connected with the head cover properly, and the waistband is adjusted to the appropriate position according to the waist circumference of the user in advance; whether the ventilation pipe 12 is connected with the head cover properly is checked, the air inlet end of the ventilation pipe 12 is inserted into the air outlet 26 of the blower 4 to be connected, and the blower 4 is started according to the air temperature change and the body needs of the user. When starting, the power key 3 is pressed for 3-5 seconds to start, accompanied by a prompt, and the power and air volume indicator lights are on; the default starting air volume is one, the air volume key is pressed for a short time, and the air volume can be switched to one, two or three; the power key 3 is pressed for 3-5 seconds to turn off, accompanied by a prompt, and the power and air volume indicator lights are off; it is suggested that the users wear and check each other when multiple users use the product in the same place.

[0045] The principle and implementation mode of the specific examples are described in the utility model, and the above embodiment is only used for helping to understand the method and core idea of the utility model; meanwhile, for the general technical personnel in the field, the specific implementation mode and application range will be changed according to the idea of the utility model. In conclusion, the content of the specification should not be understood as the limitation of the utility model.

Claims

1. A positive pressure head top fan, characterized by: The application relates to a filter device, which comprises a fan, a shell, a filter core assembly, a battery assembly and a control unit.

2. The positive pressure head top fan of claim 1, wherein: The shell comprises a face cover, a box shell and a rear cover, one end of the box shell is connected with the face cover through clamping, and the other end of the box shell is connected with the rear cover through bolts; the face cover is provided with an air inlet; and the box shell is provided with an air outlet.

3. The positive pressure head top fan of claim 2, wherein: One side of the box shell is provided with a mounting groove of the filter core assembly; one end of the mounting groove is provided with a clamping column, and the other end of the mounting groove is provided with a pressing clamping groove in a sliding mode; one end of the filter core assembly is provided with a clamping ring, and the other end of the filter core assembly is provided with a clamping hook; the clamping ring is hung on the clamping column, and the clamping hook can be clamped in the pressing clamping groove; a pressing plate of the pressing clamping groove is exposed and provided with a reset spring between the pressing plate and the box shell; and the fan is clamped between the box shell and the rear cover.

4. The positive pressure head top fan of claim 1, wherein: The control unit is arranged in the shell, and the fan and the battery assembly are in communication connection with the control unit; the bottom of the shell is clamped with the battery assembly through a push-pull buckle; and the top of the shell is provided with a display panel and control buttons of the control unit.

5. The positive pressure head top fan of claim 4, wherein: The battery assembly comprises a shell and a storage battery; the storage battery is arranged in a groove of the shell; opposite two side walls of the groove are respectively provided with a clamping groove; one end of the storage battery is provided with an insertion protrusion, and the other end of the storage battery is provided with a push-pull buckle in a sliding mode; the exposed upper end of the push-pull buckle is a push plate, and the lower end of the push-pull buckle is a clamping hook; the insertion protrusion and the clamping hook can be clamped in the clamping groove respectively; and the storage battery is electrically connected with the control unit in the shell through a power supply plug.

6. The positive pressure head top fan of claim 5, wherein: The battery assembly is provided with a charging port.

7. The positive pressure head top fan of claim 1, wherein: The filter core assembly comprises a filter core and a mounting frame; the filter core is arranged in the mounting frame; the mounting frame is clamped in a mounting groove of the shell; the mounting groove is in communication with the fan through a ventilation hole; one side of the mounting frame is a hollow surface; the hollow surface is provided with a filter screen; and the mounting frame is open on the side opposite to the hollow surface and is provided with a flange; and a sealing pad is arranged between the flange and the mounting groove.

8. The positive pressure head top fan of claim 1, wherein: The ventilation pipe assembly comprises a ventilation pipe and a connecting head; the two ends of the ventilation pipe are respectively screwed with the air outlet and the interface of the positive pressure head cover through the connecting head; and the ventilation pipe is a corrugated pipe.

9. The positive pressure head top fan of claim 1, wherein: The back of the shell is provided with a bandage; the ends of the bandage are connected through a back strap mother buckle; and the length adjustment range of the bandage is 30cm-100cm.

10. The positive pressure head top fan of claim 9, wherein: The back of the shell is connected with a waist support pad; the length of the waist support pad is greater than the length of the shell; and the two ends of the waist support pad are respectively connected with a bandage.

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