Portable apparatus for generating positive pressure and negative pressure

Abstract

A portable positive and negative pressure generating device is disclosed. According to one aspect of the present invention, a portable positive and negative pressure generating device may be provided, comprising: a main body case having a filter insertion hole on the front and a negative pressure hose connector on one side; a fan mounted on the main body case and generating an airflow that is sucked in through the negative pressure hose connector and discharged through a first ventilation hole formed on the bottom surface of the filter insertion hole; a filter part fitted into the filter insertion hole; and a filter fixing part coupled to the main body case to enable conversion between a first state in which the filter part is constrained to the filter insertion hole and a second state in which the constrained state of the filter part with respect to the filter insertion hole is released, and having a positive pressure hose connector that provides a discharge passage for air filtered by the filter part.

Description

Technology Field

[0001] The present invention relates to a portable positive and negative pressure generating device, and more specifically, to a portable positive and negative pressure generating device that can be selected and used as either a positive pressure generating device or a negative pressure generating device depending on the user's needs. Background Technology

[0002] In the event of an outbreak of respiratory infectious diseases such as COVID-19 and MERS, the use of respiratory protective equipment is required in medical settings or public places such as airports where one comes into contact with an unspecified number of people.

[0003] Conventional respiratory protective equipment was divided into positive pressure devices designed to protect medical personnel from external infectious agents, and negative pressure devices designed to block sources of infection from suspected or confirmed patients. In other words, positive and negative pressure devices were operated as separate pieces of equipment.

[0004] As a result, users such as medical staff had the disadvantage of having to familiarize themselves with the usage methods and precautions for each piece of equipment, which is a factor that increases the workload of users.

[0005] In addition, unlike general air purification filters, filters for respiratory protective equipment have a very short replacement cycle and require frequent replacement, sometimes more than once a day. However, conventional respiratory protective equipment can only be reused after being disinfected at a separate sterilization facility following filter replacement, which resulted in not only labor consumption due to filter replacement and disinfection but also delays in the reuse time of the respiratory protective equipment. The problem to be solved

[0006] An embodiment of the present invention provides a portable positive and negative pressure generating device that can be selected and used as either a positive pressure generating device or a negative pressure generating device according to the user's needs, and allows for easy filter replacement. means of solving the problem

[0007] According to one aspect of the present invention, a portable positive and negative pressure generating device may be provided, comprising: a main body case having a filter insertion hole on the front and a negative pressure hose connector on one side; a fan mounted on the main body case and generating an airflow that is sucked in through the negative pressure hose connector and discharged through a first ventilation hole formed on the bottom surface of the filter insertion hole; a filter part fitted into the filter insertion hole; and a filter fixing part coupled to the main body case to enable conversion between a first state in which the filter part is constrained to the filter insertion hole and a second state in which the constrained state of the filter part with respect to the filter insertion hole is released, and having a positive pressure hose connector that provides a discharge passage for air filtered by the filter part.

[0008] The filter portion may include a filter fitted into the filter insertion hole; and a filter fixing cover fitted into the filter insertion hole and having a second ventilation hole connected to the positive pressure hose connector.

[0009] The filter fixing part may include a plate bar that is positioned across the front surface of the filter fixing cover in the first state and has both ends connected to the main body case, but is removed from the front surface of the filter fixing cover in the second state.

[0010] The above positive pressure hose connector can be connected to the central part of the plate bar.

[0011] The above plate bar is made of an elastic material, and at least one end of the plate bar formed in a curved manner can be detachably coupled to an insertion groove formed in the main body case.

[0012] The above plate bar can press the filter fixing cover toward the filter and the main body case in the first state.

[0013] At least one part of the main body case partitioning the filter insertion hole and the filter fixing cover may be made of an elastic material.

[0014] The main body case may have a ring-shaped first protrusion that extends along the edge of the bottom surface of the filter insertion hole and forms a contact surface with the ring-shaped frame portion of the filter, so that a first expanded flow path with a flow path cross-sectional area larger than the first ventilation hole partitioned by the first protrusion is formed between the bottom surface of the filter insertion hole and the filtration portion of the filter, and the filter fixing cover may have a ring-shaped second protrusion that extends along the rear edge and forms a contact surface with the ring-shaped frame portion of the filter, so that a second expanded flow path with a flow path cross-sectional area larger than the second ventilation hole partitioned by the second protrusion is formed between the filter fixing cover and the filtration portion of the filter.

[0015] The main body case comprises: a first case having a filter insertion hole, a first ventilation hole, a fan insertion hole formed on the rear surface and connected to the filter insertion hole through the first ventilation hole, and a first sliding coupling hole formed to extend from the top surface to the rear surface and connected to the entrance of the fan insertion hole; a second case including a front portion having a ventilation pipe fitted into the first ventilation hole and a side portion fitted into the fan insertion hole, wherein the side portion has a protruding area that is slidably coupled to the first sliding coupling hole upon fitting, and a second sliding coupling hole formed in the protruding area; and a fan housing inserted into and coupled to the second case through the open rear surface of the second case. The fan housing includes a rear cover coupled to the second case to close the open rear surface of the second case, and the fan housing has the fan mounted on its inner side and has the negative pressure hose connector on one side, and the inner space of the fan housing partitioned by the inner surface of the fan housing and the rear surface of the second case is connected to the ventilation pipe, and the negative pressure hose connector can be slidably coupled to the second sliding coupling hole when the fan housing is inserted into the second case for coupling.

[0016] The above rear cover may be provided with a strip holder on the rear portion that can be attached to a user's belt. Effects of the invention

[0017] According to an embodiment of the present invention, a user can use the device according to the present invention as either a positive pressure generating device or a negative pressure generating device by selectively connecting a positive pressure hose connected to a mask, etc. or a negative pressure hose connected to a negative pressure facility, etc., to a positive pressure hose connector or a negative pressure hose connector.

[0018] In addition, the filter unit is connected in a snap-fit ​​manner, making filter replacement easy.

[0019] In addition, the device according to an embodiment of the present invention is structured so that the filter part or the first case in contact with the filter part can be replaced integrally, so that the sterilization process after filter replacement can be omitted, and as a result, the time required to reuse the device after filter replacement can be reduced. Brief explanation of the drawing

[0020] FIG. 1 is a perspective view of a portable positive and negative pressure generating device according to an embodiment of the present invention, and FIGS. 2 and FIGS. 3 are exploded perspective views of FIG. 1, and FIG. 4 is a front view of FIG. 1, and FIG. 5 is a plan view of FIG. 1, and FIG. 6 is a cross-sectional view taken at I-I in FIG. 4, and FIG. 7 is a cross-sectional view taken at II-II of FIG. 5, and Figure 8 is a drawing illustrating a modified example in which the positive pressure hose connector of Figure 6 is changed to a different model. Specific details for implementing the invention

[0021] Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the attached drawings.

[0022] The attached drawings are not drawn to the actual scale to aid in understanding the invention, and the dimensions of some components may be exaggerated.

[0023] Terms used in the specification and claims of the present invention should not be limited to their ordinary or dictionary meanings, and should be interpreted in a meaning and concept consistent with the technical spirit of the present invention, based on the principle that the inventor can appropriately define the concept of the terms to best describe his invention.

[0024] In this specification, the singular form shall be deemed to include the plural form unless otherwise specifically stated.

[0025] In addition, if it is stated that a part "includes" a certain component, it means that the part may include additional components.

[0026] In addition, when a component is described as "up," it refers to the area above or below the component, and does not necessarily mean that it is located on the upper side relative to the direction of gravity.

[0027] In addition, where it is stated that a component is "connected" or "combined" to another component, this may include not only cases where the component is directly connected or combined to the other component, but also cases where the component is indirectly connected or combined through another component.

[0028] In addition, terms such as "first," "second," etc., may be used to describe a component; however, these terms are intended merely to distinguish the component from other components and are not intended to limit the essence, order, or sequence of the component.

[0029] FIG. 1 is a perspective view of a portable positive and negative pressure generating device according to an embodiment of the present invention, FIG. 2 and FIG. 3 are exploded perspective views of FIG. 1, FIG. 4 is a front view of FIG. 1, FIG. 5 is a plan view of FIG. 1, FIG. 6 is a cross-sectional view taken from I-I of FIG. 4, and FIG. 7 is a cross-sectional view taken from II-II of FIG. 5.

[0030] Referring to FIGS. 1 to 7, a portable positive and negative pressure generating device (10) according to an embodiment of the present invention may include a main body case (100), a fan (200), a filter unit (300), and a filter fixing unit (400).

[0031] The main body case (100) may be equipped with a filter insertion hole (111) and a negative pressure hose connector (131).

[0032] A filter insertion hole (111) may be formed on the front surface of the main body case (100), and a first ventilation hole (112) may be formed in the center of the bottom surface of the filter insertion hole (111), that is, the side opposite the entrance of the filter insertion hole (111).

[0033] The negative pressure hose connector (131) can be formed to allow a negative pressure hose connected to a negative pressure facility, etc. to be connected, and can be positioned to protrude from one side of the main body case (100), for example, the upper surface.

[0034] The fan (200) can be mounted on the main body case (100) and can generate an airflow such that air is sucked in through the negative pressure hose connector (131) and discharged through the first ventilation hole (112) to the filter insertion hole (111).

[0035] The filter section (300) can be fitted into the filter insertion hole (111) of the main body case (100) and may include a filter (310) and a filter fixing cover (320).

[0036] The filter (310) and the filter fixing cover (320) can be fitted into the filter insertion hole (111) in turn.

[0037] That is, the filter (310) can be interposed between the bottom surface of the filter insertion hole (111) and the filter fixing cover (320).

[0038] The filter fixing cover (320) may have a second ventilation hole (321) in the form of a through hole in the center.

[0039] Accordingly, air introduced into the filter insertion hole (111) through the first ventilation hole (112) can be filtered out of infectious substances, etc. as it passes through the filter (310), and the filtered air can be discharged to the positive pressure hose connector (420) described later through the second ventilation hole (321).

[0040] The filter fixing part (400) can be coupled to the main body case (100) so as to enable conversion to the first state and the second state described later.

[0041] The first state of the filter fixing part (400) may mean a positioning state in which the filter part (300) is constrained to the filter insertion hole (111), and the second state of the filter fixing part (400) may mean a positioning state in which the constrained state of the filter part (300) with respect to the filter insertion hole (111) is released.

[0042] To this end, the filter fixing part (400) may include a plate bar (410) as an example that is not limited.

[0043] In the first state, the plate bar (410) is positioned across the front of the filter fixing cover (320), and both ends of the plate bar (410) can be connected to the main body case (100), and in the second state, it can be removed from the front of the filter fixing cover (320).

[0044] For example, the plate bar (410) may be made of an elastic material capable of bending, and at least one end of the plate bar (410) formed in a curved manner may be inserted into an insertion groove (113) formed in the main body case (100) so as to be detachably coupled to the main body case (100).

[0045] For example, both ends of the plate bar (410) can be detachably connected to the main body case (100) in the manner described above.

[0046] As another example, one end of the plate bar (410) may be detachably connected to the main body case (100) in the manner described above, while the other end may be rotatably connected to the main body case (100).

[0047] Additionally, the filter fixing part (400) may be equipped with a positive pressure hose connector (420) that provides a discharge passage for air filtered by the filter part (300).

[0048] The positive pressure hose connector (420) can be fixedly connected to the center of the plate bar (410).

[0049] Additionally, the positive pressure hose connector (420) can be detachably coupled to the filter fixing cover (320) by inserting one end of the positive pressure hose connector (420), which is positioned to protrude over the rear surface of the plate bar (410), into the second ventilation hole (321) of the filter fixing cover (320).

[0050] Meanwhile, the plate bar (410) can press the filter fixing cover (320) toward the filter (310) and the main body case (100) in the first state. For example, the distance from the bottom surface of the filter insertion hole (111) to the front of the filter fixing cover (320) may be greater in the second state than in the first state.

[0051] As a result, the sealing properties of the device and the resulting blocking effect against infectious substances can be further improved.

[0052] To further enhance this effect, at least one part of the main body case (100) that partitions the filter insertion hole (111), for example, the first case (110) and the filter fixing cover (320) described later, may be made of an elastic material that can be compressed by the pressure of the plate bar (410).

[0053] In this specification, the elastic material may include expanded polystyrene (EPS), and using such an elastic material can be expected to reduce the device weight by about 30%. In addition, if a lamination coating is applied by overlaying a thin plastic layer on the surface of the EPS structure, the barrier effect against infectious substances and the sealing performance may be further improved.

[0054] Meanwhile, the main body case (100) may have a ring-shaped first protrusion (114) that extends along the edge of the filter insertion hole (111) and forms a contact surface with the ring-shaped frame portion (311) of the filter (310), and the filter fixing cover (320) may have a ring-shaped second protrusion (322) that extends along the rear edge of the filter fixing cover (320) and forms a contact surface with the ring-shaped frame portion (311) of the filter (310). Accordingly, a first expanded flow path (A1) with a flow path cross-sectional area larger than that of the first ventilation hole (112) partitioned by the first protrusion (114) can be formed between the bottom surface of the filter insertion hole (111) and the filtration portion (312) of the filter (310), and a second expanded flow path (A2) with a flow path cross-sectional area larger than that of the second ventilation hole (321) partitioned by the second protrusion (322) can be formed between the rear surface of the filter fixing cover (320) and the filtration portion (312) of the filter (310). As a result, air flowing into the first expanded flow path (A1) through the first ventilation hole (112) can spread widely, thereby improving filtration efficiency and further improving the sealing efficiency of the device. Here, the frame portion (311) may refer to a frame that supports the filter portion (312) by being arranged to extend along the edge of the filter portion (312) that filters infectious material, and may be formed with a thickness greater than that of the filter portion (312).

[0055] Meanwhile, the main body case (100) may include a first case (110) having a filter insertion hole (111) and a fan insertion hole (115), and a second case (120) which is fitted into the fan insertion hole (115) of the first case (110) and is easily separated from the first case (110). Additionally, the main body case (100) may include a fan housing (130) and a rear cover (140) which are connected to the second case (120) through fastening members such as bolts.

[0056] The first case (110) may have a filter insertion hole (111), a first ventilation hole (112), a fan insertion hole (115), and a first sliding coupling hole (116), and may further have an insertion groove (113) and a first protrusion (114).

[0057] A filter insertion hole (111) may be formed on the front of the first case (110), a fan insertion hole (115) may be formed on the rear of the first case (110), and a first ventilation hole (112) may be placed between the filter insertion hole (111) and the fan insertion hole (115).

[0058] The first sliding coupling hole (116) is formed to extend from the upper surface of the first case (110) to the rear surface and can be connected to the entrance of the fan insertion hole (115), and can be formed in the shape of a through hole.

[0059] As a result, when the second case (120) is fitted into the fan insertion hole (115), the protruding area (122a) protruding from the outer surface of the side portion (122) of the second case (120) can be slidably coupled to the first sliding coupling hole (116).

[0060] The second case (120) may include a front portion (121) and a side portion (122), and the rear of the second case (120) may be in an open shape.

[0061] Accordingly, a fan housing (130) can be coupled to the inside of the second case (120) through the open rear of the second case (120), and a battery (B) that supplies power to the fan (200) and a control board (C) that controls the operation of the fan (200) can be mounted in the inside space of the second case (120).

[0062] The front portion (121) is a part facing the bottom surface of the fan insertion hole (115), and a ventilation pipe (121a) that can be fitted into the first ventilation hole (112) may be formed in the center of the front portion (121).

[0063] The side portion (122) is a portion facing the side of the fan insertion hole (115) and can be fitted into the fan insertion hole (115).

[0064] The side portion (122) may have a protruding area (122a) that protrudes from the outer surface of the side portion (122) and is slidably coupled to a first sliding coupling hole (116) when the second case (120) is fitted to the first case (110), and a second sliding coupling hole (122b) formed in the protruding area (122a).

[0065] Additionally, a control panel (P) and a power button (W) for inputting an operation signal of a control board (C) may be disposed on the outer surface of the protruding area (122a) exposed to the outside of the side portion (122).

[0066] The fan housing (130) can be inserted into the inside of the second case (120) through the open rear of the second case (120) and coupled to the second case (120).

[0067] A fan (200) may be mounted on the inside of the fan housing (130), and a negative pressure hose connector (131) may be provided on one side of the fan housing (130). Accordingly, when the fan (200) is operated, air may be introduced into the fan housing (130) through the negative pressure hose connector (131) and then discharged to the first ventilation hole (112) through the ventilation pipe (121a) of the second case (120). To this end, the inner space of the fan housing (130), which is partitioned by the inner surface of the fan housing (130) and the rear surface of the second case (120), may be connected to the ventilation pipe (121a). Additionally, the fan housing (130) may enclose the entire inlet of the ventilation pipe (121a).

[0068] The negative pressure hose connector (131) can be slidably coupled to the second sliding coupling hole (122b) when the fan housing (130) is inserted into the second case (120) for coupling, and the end of the negative pressure hose connector (131) can be positioned to protrude over the outer surface of the protruding area (122a).

[0069] The rear cover (140) is coupled to the second case (120) to close the open rear of the second case (120).

[0070] Additionally, the second case (120), fan housing (130), and rear cover (140) can be fixedly connected to each other through fastening members such as bolts, and can be detachably connected by fitting into the first case (110).

[0071] Additionally, the rear cover (140) may be provided with a strip holder (141) on the rear portion that can be attached to the user's belt.

[0072] For example, the user can wear the device (10) according to an embodiment of the present invention on their body by attaching a belt worn on the waist or other body parts to the strip holder (141).

[0073] Due to this convenient wearing form and lightweight device, user fatigue can be reduced when worn for a long time.

[0074] In addition, when the filter unit (300) is separated separately or the filter unit (300) and the first case (110) are separated as a single unit, the second case (120), fan housing (130), and rear cover (140), which are fixedly connected to each other, can be maintained in a state worn on the user's body through the strip holder (141), making filter replacement easier.

[0075] Figure 8 is a drawing illustrating a modified example in which the positive pressure hose connector of Figure 6 is changed to a different model.

[0076] Referring to FIG. 8, the positive pressure hose connector (420) may be structured such that the positive pressure hose can be connected malely, unlike the structure in FIG. 6 in which the positive pressure hose can be connected femalely. When two such structures of positive pressure hose connectors (420) are selectively used, the user may have the advantage of being able to identify the positive pressure hose connector (420) by looking at its structure when using the device (10) according to the embodiment of the present invention as a positive pressure generating device and a negative pressure generating device.

[0077] Although the present invention has been described above with reference to preferred embodiments, this is merely illustrative and does not limit the invention. A person skilled in the art may modify and change the embodiments in various ways by adding, changing, deleting, or adding components without departing from the technical spirit of the invention as described in the claims, and such modifications and changes are also to be considered to be included within the scope of the rights of the present invention. Explanation of the symbols

[0078] 10: Positive and negative pressure generating device 100: Main body case 110: Case 1 111: Filter insertion hole 112: First ventilation hole 113: Insertion groove 114: First protrusion 115: Fan insertion hole 116: First sliding coupling hole 120: Second case 121: Front section 121a: Vent pipe 122: Side section 122a: Protruding area 122b: Second sliding coupling hole 130: Fan housing 131: Negative pressure hose connector 140: Rear cover 141: Strip holder 200: Fan 300: Filter section 310: Filter 311: Frame section 312: Filter section 320: Filter fixing cover 321: Second ventilation hole 322: Second protrusion 400: Filter fixing part 410: Plate bar 420: Positive pressure hose connector

Claims

Claim 1 A main body case having a filter insertion hole on the front and a negative pressure hose connector on one side; a fan mounted on the main body case and generating an airflow that is sucked in through the negative pressure hose connector and discharged through a first ventilation hole formed on the bottom surface of the filter insertion hole; a filter part fitted into the filter insertion hole; and a filter fixing part coupled to the main body case to enable conversion between a first state in which the filter part is constrained to the filter insertion hole and a second state in which the constrained state of the filter part with respect to the filter insertion hole is released, and having a positive pressure hose connector that provides a discharge passage for air filtered by the filter part, wherein the filter part comprises a filter fitted into the filter insertion hole; A portable positive and negative pressure generating device comprising a filter fixing cover that is fitted into the filter insertion hole and has a second ventilation hole connected to the positive pressure hose connector, wherein when a negative pressure hose is connected to the negative pressure hose connector, it is used as a negative pressure generating device that provides negative pressure through the negative pressure hose, whereas when a positive pressure hose is connected to the positive pressure hose connector, it is used as a positive pressure generating device that provides positive pressure through the positive pressure hose. Claim 2 delete Claim 3 A portable positive and negative pressure generating device according to claim 1, wherein the filter fixing part comprises a plate bar that is positioned across the front surface of the filter fixing cover in the first state and has both ends connected to the main body case, and is removed from the front surface of the filter fixing cover in the second state. Claim 4 In paragraph 3, the positive pressure hose connector is a portable positive and negative pressure generating device coupled to the central part of the plate bar. Claim 5 A portable positive and negative pressure generating device according to paragraph 3, wherein the plate bar is made of an elastic material, and at least one end of the plate bar formed in a curved manner is detachably coupled to an insertion groove formed in the main body case. Claim 6 In paragraph 3, the plate bar is a portable positive and negative pressure generating device that presses the filter fixing cover toward the filter and the main body case in the first state. Claim 7 In claim 6, the portable positive and negative pressure generating device wherein at least one part of the main body case partitioning the filter insertion hole and the filter fixing cover are made of an elastic material. Claim 8 A portable positive and negative pressure generating device according to claim 7, wherein the main body case has a ring-shaped first protrusion that extends along the edge of the bottom surface of the filter insertion hole and forms a contact surface with the ring-shaped frame portion of the filter, so that a first expanded flow path with a flow path cross-sectional area larger than the first ventilation hole partitioned by the first protrusion is formed between the bottom surface of the filter insertion hole and the filtration portion of the filter, and the filter fixing cover has a ring-shaped second protrusion that extends along the rear edge and forms a contact surface with the ring-shaped frame portion of the filter, so that a second expanded flow path with a flow path cross-sectional area larger than the second ventilation hole partitioned by the second protrusion is formed between the filter fixing cover and the filtration portion of the filter. Claim 9 In claim 1, the main body case comprises: a first case having a filter insertion hole, a first ventilation hole, a fan insertion hole formed on the rear surface and connected to the filter insertion hole through the first ventilation hole, and a first sliding coupling hole formed to extend from the top surface to the rear surface and connected to the entrance of the fan insertion hole; a second case having a front portion having a ventilation pipe fitted into the first ventilation hole, and a side portion fitted into the fan insertion hole, wherein the side portion has a protruding area that is slidably coupled to the first sliding coupling hole upon fitting, and a second sliding coupling hole formed in the protruding area; and a fan housing inserted into and coupled to the second case through the open rear surface of the second case. A portable positive and negative pressure generating device comprising a rear cover coupled to the second case and closing the open rear of the second case, wherein the fan housing has the fan mounted on the inside and has the negative pressure hose connector on one side, the inner space of the fan housing partitioned by the inner surface of the fan housing and the rear of the second case is connected to the vent pipe, and the negative pressure hose connector is slidably coupled to the second sliding coupling hole when the fan housing is inserted into the second case for coupling. Claim 10 In claim 9, the above-mentioned rear cover is a portable positive and negative pressure generating device having a strip holder on the rear portion that can be attached to a user's belt.

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