WO2021033244A1 - 空調服用リング付き二重プロペラファンユニット - Google Patents
空調服用リング付き二重プロペラファンユニット Download PDFInfo
- Publication number
- WO2021033244A1 WO2021033244A1 PCT/JP2019/032317 JP2019032317W WO2021033244A1 WO 2021033244 A1 WO2021033244 A1 WO 2021033244A1 JP 2019032317 W JP2019032317 W JP 2019032317W WO 2021033244 A1 WO2021033244 A1 WO 2021033244A1
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- Prior art keywords
- propeller fan
- air
- fan
- rotating
- motor
- Prior art date
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- 230000003068 static effect Effects 0.000 claims abstract description 58
- 238000004378 air conditioning Methods 0.000 claims description 37
- 238000007664 blowing Methods 0.000 claims description 4
- 239000000428 dust Substances 0.000 abstract description 9
- 238000007599 discharging Methods 0.000 abstract 1
- 238000000034 method Methods 0.000 description 13
- 230000000694 effects Effects 0.000 description 10
- 238000005259 measurement Methods 0.000 description 10
- 230000002093 peripheral effect Effects 0.000 description 9
- 238000010586 diagram Methods 0.000 description 8
- 238000009423 ventilation Methods 0.000 description 8
- 230000002265 prevention Effects 0.000 description 5
- 206010019345 Heat stroke Diseases 0.000 description 4
- 238000001816 cooling Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 238000001914 filtration Methods 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- 230000000052 comparative effect Effects 0.000 description 2
- 230000034994 death Effects 0.000 description 2
- 231100000517 death Toxicity 0.000 description 2
- 230000000994 depressogenic effect Effects 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 238000011144 upstream manufacturing Methods 0.000 description 2
- 239000004743 Polypropylene Substances 0.000 description 1
- 230000003631 expected effect Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000003517 fume Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000004745 nonwoven fabric Substances 0.000 description 1
- 238000010422 painting Methods 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- -1 polypropylene Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D25/00—Pumping installations or systems
- F04D25/02—Units comprising pumps and their driving means
- F04D25/08—Units comprising pumps and their driving means the working fluid being air, e.g. for ventilation
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D25/00—Pumping installations or systems
- F04D25/16—Combinations of two or more pumps ; Producing two or more separate gas flows
Definitions
- the present invention relates to a technique for a fan unit for air-conditioning using a double-type propeller fan. Specifically, the outer peripheral edge of each blade of the double-type propeller fan is connected by an annular ring portion to form the ring. It is related to the fan unit technology for air-conditioning clothes that can take in air into the clothes and discharge it even if a dustproof filter is attached by guiding the air flowing inside the part in the direction of the central axis to obtain a high static pressure. Is.
- the propeller fan has a problem that the pumping force is extremely reduced due to the resistance in the air-conditioned clothes because the static pressure is low although the air volume is large. ing. Furthermore, if a filter is provided, the amount of air blown will be significantly reduced. Therefore, it is decided to directly send the outside air into the gap between the clothes and the body without providing a filter, or a coarse filter with a low degree of filtration is used. The current situation is to prepare. However, this can be said to be problematic regarding the effects of dust and the like on the human body at painting sites and dismantling sites.
- the invention of "a double fan motor characterized in that the rotation direction is the same and the rotation speed of the impeller on the intake side is set to be higher than that on the exhaust side” has been published and is a known technique.
- the technique described in Patent Document 1 uniformly cools the entire heat sink by making the rotation speeds of the impellers on the intake side and the exhaust side different, and has an object of obtaining a high static pressure, and is a double propeller fan.
- the problem to be solved and the technical means for solving the problem are different from those of the present invention in which the problem is solved by providing an annular ring portion connecting the outer peripheral edges of each blade.
- the support column of the second fan on the discharge side is located on the downstream side of the ventilation (outside the discharge port) with respect to the impeller of the second fan, and is located on the upstream side first fan and downstream. It is configured to form an independent separate body from the side second fan and to be connected by an inlay at the end edge of both venturi cases.
- the invention has been published and is a known technique.
- the technique described in Patent Document 2 is a device for connecting the two fan units by devising the position of the support column and the connecting means of the respective venturi cases, and has an object of obtaining a high static pressure.
- the problem to be solved and the technical means for solving the problem are different from those of the present invention in which the problem is solved by providing an annular ring portion connecting the outer peripheral edges of each blade to any of the counter-rotating propeller fans.
- Patent Document 3 a technique in which the title of the invention is "contra-rotating blower” is disclosed (see Patent Document 3). Specifically, the problem is "to obtain a counter-rotating blower with a simpler configuration and high energy efficiency without using a gear train while using one motor.”
- the first impeller is driven by a motor and the second impeller is free-rotating, or when the motor-driven and free-rotating are reversed, when the motor-driven impeller rotates, the wind power of this impeller causes the other impeller to rotate in the opposite direction.
- the diameter of the first impeller (or the second impeller) is L1
- the diameter of the second impeller (or the first impeller) is L2
- the number of blades of the first impeller is A
- the number of blades of the second impeller is B
- the ratio of the gaps between the impellers to the total area of the impellers of the first impeller is P
- the ratio of the gaps of the second impeller is Q.
- Patent Document 3 attempts to obtain the same or similar effect as a counter-rotating type fan using two motors by freely rotating the second impellers having different total areas. Therefore, the present invention solves the problem by providing an annular ring portion connecting the outer peripheral edges of each blade to any of the counter-rotating propeller fans with the object of obtaining a high static pressure. And the technical means of solving the problem are different.
- the present invention relates to the technology of a fan unit for air-conditioned clothes using a double-type propeller fan.
- the outer peripheral edge of the double-type propeller fan is connected by an annular ring portion to guide the air flow to be discharged.
- the present invention is a fan unit used for air-conditioned clothes, which is composed of a propeller fan, a motor, a dustproof filter, and a casing, and the propeller fan is doubly arranged and any of the propeller fans is configured.
- the propeller fan By connecting the outer edges of the plurality of blades with an annular ring portion, it acts as a guide for the air flow to be blown, and allows the air flowing inside the ring portion to flow in the axial direction of the rotation axis, resulting in high static.
- a configuration is adopted in which pressure is obtained and the tip of the blade is prevented from being deformed.
- the present invention includes a first propeller fan having the ring portion and a second propeller fan having the ring portion on the same rotating shaft of the motor, and the blade of the first propeller fan and the second propeller. It is also possible to adopt a configuration in the form of a coaxial contra-rotating propeller fan, wherein the blades of the fan are arranged so as to be continuous with each other.
- the present invention also comprises a first unit including the first propeller fan and a first motor for driving the first propeller fan, and a second motor for driving the second propeller fan and the second propeller fan. It has two units, the rotation axes of the first propeller fan and the second propeller fan are on the same straight line, and the rotation directions of the first propeller fan and the second propeller fan are reversed. With the double-reversing propeller fan type of the shaft, it is also possible to adopt a configuration in which the flows in different turning directions are canceled and the air is blown linearly in the direction of the rotating shaft to obtain a high static pressure.
- the present invention can also adopt a configuration in which a dustproof filter is provided in the casing.
- the present invention can also adopt a configuration in which the casing sucks air from the bottom on the opposite side of the body side and discharges air to the body side.
- the present invention can also adopt a configuration in which the casing sucks air from the bottom side and discharges air to the upper side.
- the contra-rotating propeller fan unit with an air-conditioning dosing ring since the outer peripheral edge of each blade is connected by an annular ring, the blade shape does not deform even under a high load, and high static pressure and high static pressure are obtained. It has an excellent effect of being able to obtain air volume.
- the contra-rotating propeller exhibits an excellent effect that a higher air volume and a higher static pressure can be obtained as compared with a single propeller.
- both of the double propellers are provided with an annular ring portion, a fluid flowing in the axial direction by connecting the two such ring portions. It has an excellent effect of guiding the road and reducing fluid loss due to unnecessary swirling flow.
- the swirling flows cancel each other out and the air flow is blown in the axial direction of the rotating shaft.
- the two annular ring portions act as guides to guide the air flowing inside the ring portion toward the central axis, making it possible to obtain a high static pressure. It is effective.
- FIG. 1 It is a basic structure explanatory drawing explaining the basic structure of the contra-rotating propeller fan unit with an air-conditioning administration ring which concerns on this invention. It is a layout example comparative explanatory drawing explaining the layout of the contra-rotating propeller fan unit with an air-conditioning administration ring which concerns on this invention. It is a propeller fan structure explanatory drawing explaining the structure of the propeller fan with the outer peripheral ring in the contra-rotating propeller fan unit with the air-conditioning administration ring which concerns on this invention.
- FIG. 1 It is a basic structure explanatory drawing explaining the basic structure of the contra-rotating propeller fan unit with an air-conditioning administration ring which concerns on this invention. It is a layout example comparative explanatory drawing explaining the layout of the contra-rotating propeller fan unit with an air-conditioning administration ring which concerns on this invention. It is a propeller fan structure explanatory drawing explaining the structure of the propeller fan with the outer peripheral ring in the contra-rotating propeller fan unit with
- FIG. 5 is an explanatory diagram of an example showing a state in which two propeller fans with a ring are coaxially crossed by one motor and housed in Casing Example 1 in the contra-rotating propeller fan unit with an air-conditioning administration ring according to the present invention.
- FIG. 5 is an explanatory diagram showing a state in which two propeller fans with rings are coaxially crossed by one motor and housed in Casing Example 2 in the contra-rotating propeller fan unit with a ring for air conditioning according to the present invention.
- FIG. 5 is an explanatory diagram showing a state in which two propeller fans with a ring are double inverted by two motors and housed in Casing Example 1 in the double propeller fan unit with a ring for air conditioning according to the present invention.
- FIG. 5 is an explanatory diagram showing a state in which two propeller fans with a ring are double inverted by two motors and housed in Casing Example 2 in the double propeller fan unit with a ring for air conditioning according to the present invention. It is a measurement result diagram which shows the graph which shows the relationship between the static pressure and the flow rate in the case of a single propeller fan without a ring, 1 motor, and 80 mm in diameter, respectively. It is a measurement result figure which shows the graph and the data table which show the relationship between the static pressure and the flow rate in the case of a single propeller fan with a diameter 80mm, one propeller fan with a ring, and one motor, respectively.
- the temperature is in the range of 24.7 ° C to 26.3 ° C, humidity of 62.2% to 73.2%, and atmospheric pressure of 1001.1 hPa to 1012.6 hPa.
- the propeller fans are doubly arranged, and a plurality of blades constituting any propeller fan are connected to the outer edge by an annular ring portion. Plays a role of guiding the air flow to be discharged, and the most characteristic feature is that a high static pressure H is obtained by guiding the air flowing inside the ring portion in the direction of the central axis.
- a high static pressure H is obtained by guiding the air flowing inside the ring portion in the direction of the central axis.
- FIG. 1 is a basic configuration explanatory diagram illustrating a basic configuration of a counter-rotating propeller fan unit with an air-conditioning dosing ring according to the present invention.
- FIG. 1A shows a configuration in which one motor 20 is driven by two propeller fans 10 with rings having the same rotation axis
- FIG. 1B shows a configuration in which two motors 20 are driven.
- the propeller fan 10 arranged in a double manner shows a configuration in which the propeller fan 10 is driven in reverse.
- the propeller fans 10 with rings fixed on the same axis are provided so as to intersect, and the blades 12 are the blades of the propeller fan 10 on the intake side as shown in FIG. 1A1. It is desirable that the blade 12 and the blade 12 of the propeller fan 10 on the discharge side flow continuously. With such an arrangement configuration, it is possible to obtain a spiral propeller fan 10 that cannot be die-cut due to an undercut problem in injection molding.
- the contra-rotating propeller fan unit 1 with an air-conditioning ring is composed of a propeller fan 10, a motor 20, a dustproof filter 30, and a casing 40.
- the propeller fan 10 is doubly arranged, and any propeller fan 10 is used.
- the blade 12 acts as a guide for the discharged air flow and allows the air flowing inside the ring portion 11 to flow in the central axis direction.
- a high static pressure H is obtained by preventing deformation of the tip portion of the.
- the propeller fan 10 is a so-called axial fan, and is a blower in which the direction of air flow is linear while rotating along the rotation axis of the motor 20, and the air flow is reversed by reverse rotation.
- the ordinary propeller fan 10 is used for applications that do not require wind pressure and require a large amount of air volume Q as compared with sirocco fans, turbofans, and the like.
- a ventilation fan, an air transfer fan, or the like Therefore, it can be said that the propeller fan 10 is not suitable as a blower for air conditioning that requires a high static pressure H.
- the advantages of the propeller fan 10 are that it is lightweight and can be made into a thin shape.
- the propeller fan 10 provided with the annular ring portion 11 is doubly arranged in order to compensate for the disadvantages. I decided.
- the air volume Q means the amount of air moved by the blower by exhaust or intake per unit time, and the unit is generally expressed in cubic meters / h (hours) or cubic meters / min (minutes), and the air volume Q passes through. It is a multiplier of the wind speed V (m / s) and the passing area A (square meter).
- total pressure There are “total pressure”, “static pressure”, and “dynamic pressure” in the wind pressure, and the pressure is expressed by the height of the water column, and the unit is Pa (Pascal). Since the total pressure is the pressure obtained by adding the static pressure H and the dynamic pressure, the dynamic pressure does not have to be considered in the air-conditioned clothes, so the static pressure H becomes a problem.
- the static pressure H is a force that pushes the surroundings while the air is stationary, and is, for example, a pressure that tries to push the air when the air-conditioned clothes are filled with air.
- the horizontal axis is the air volume Q (Quantity) and the vertical axis is the static pressure H (Head), and a curve graph (QH curve) of the static pressure H with respect to the air volume Q is drawn. It is called a QH characteristic, and the data of the QH characteristic according to FIGS. 8 to 13 are shown.
- the ring portion 11 is an annular ring portion 11 that connects the outer peripheral edges of the blades 12 of the propeller fan 10, and when the ring portions 11 are doubly overlapped, it serves as a guide for the air flow to be blown. It contributes to obtaining a high static pressure H by guiding the air flowing inside the ring portion 11 in the direction of the central axis and preventing deformation of the tip portion of the blade 12 at the time of high rotation and high load.
- the blade 12 is also called a blade, an impeller, etc., and is a device for converting the rotational force output from the motor 20 into wind power.
- the five blades are shown in each drawing, this is merely an example, and the present invention is not limited to this, and can be changed within the range of the effect exhibited as the creation of the technical idea of the present invention. Is.
- the first propeller fan 13 is a propeller fan 10 arranged on the suction side among the double propeller fans 10.
- the second propeller fan 14 is a propeller fan 10 (FIG. 3 (b)) arranged on the discharge side of the double propeller fans 10.
- the second propeller fan 14 has the same shape as the first propeller fan 13 (FIG. 3A) and is a motor. Two 20s are arranged and driven by the second motor 22.
- the second propeller fan 14 has a propeller fan 13 (FIG. 3 (a)) and an inverted shape (FIG. 3 (b)).
- the rib 15 is a so-called stepped portion for reinforcement provided around the outer edge of the ring portion 11, contributes to the rigidity of the propeller fan 10, and can be expected to exhibit a bell mouth function.
- the motor 20 is a prime mover that drives the propeller fan 10.
- the type of the motor 20 may be appropriately selected from a wide variety of motors such as a DC brush motor, a DC brushless motor, a stepping motor, and an AC motor. Since the motor 20 is used for air conditioning, from the viewpoint of cost and rotation speed control, etc. , DC brush motor (commutator motor) has a simple electric circuit and is most widely used and suitable.
- the term "motor 20" is used as a general term for motors including "first motor 21" and "second motor 22" for the sake of explanation.
- the first motor 21 is the first propeller fan 13 on the suction side shown in FIGS. 2 (f1) and 2 (f2), or the first propeller on the suction side as shown in FIGS. 2 (d1) and 2 (d2). It is a prime mover that drives the fan 13 and the second propeller fan 14 that rotates coaxially with the first propeller fan 13 on the suction side.
- the second motor 22 is a prime mover that drives the second propeller fan 14 on the discharge side so as to reverse with respect to the first propeller fan 13.
- the dustproof filter 30 is provided for the purpose of reducing the risk of dust, harmful substances, etc. entering the air-conditioned clothes and inhaling them.
- the air intake resistance increases when a high-density filter is used, so a cover is attached to prevent large foreign matter and fingertips from entering, or a relatively coarse filtration member (material). Is currently used (polypropylene non-woven fabric, etc.). Therefore, the dust filter 30 according to the present invention uses at least a medium performance filter (performance test method for ventilation air filter unit / ventilation dust collector) defined in Japanese Industrial Standards, and is preferably used in the United States Occupational Safety and Health. It is desirable to have a filtration function of about N95, which is a standard set by the Institute (NIOSH), or DS2, which is a standard set by the Ministry of Health, Labor and Welfare of Japan.
- NIOSH National Industrial Standard
- the standard is defined as a dust mask that adheres to the face, but the suction prevention and control concentration of metal fume is set to a predetermined size, for example, a place where dust of a substance of 0.1 mg / cubic meter or less is scattered. This is to avoid the risk of taking this into the clothes and inhaling it in the work in.
- the performance of N95 or DS2 is almost the same, but DS1, DL1, RS1 or RL1 of a standard having a particle collection efficiency of general dust having a particle size larger than that of the standard may be used.
- the casing 40 is a housing for providing a double propeller fan 10, a motor 20, and a dustproof filter 30, and has an air inlet and an air outlet, and is driven by the motor 20 by the propeller fan 10. It forms a flow path for the blown gas. Then, in the casing 40, a locking portion 41 for attaching to clothes as an air-conditioned clothes fan unit, a clothes scissors portion 42 for folding back and holding the edges of clothes so that the clothes do not shift, and suction for preventing slippage of clothes. It is desirable to have a configuration in which a mouth 43 or the like is provided.
- a swirling direction casing that blows air in the swirling direction and an axial casing that blows air in the axial direction are shown in FIGS. 4 to 7 as examples.
- the locking portion 41 sandwiches and holds the fan unit 1 in the upper edge of the opening of these clothes.
- the stop 41 is provided on the casing 40.
- the clothes scissors 42 is for folding and sandwiching the ends of the clothes so that the clothes do not shift, and it is preferable that the clothes scissors 42 are provided in the casing 40.
- the clothes slip prevention suction port 43 sucks clothes by the suction force from the propeller fan 10 so that the clothes to be covered do not slip when the fan unit 1 for air conditioning according to the present invention is attached. It is a hole for prevention, and the slip prevention suction port 43 for the clothes is provided in the casing 40.
- the first unit 50 is composed of a first propeller fan 13 and / or a first motor 21 for driving a second propeller fan 14 provided coaxially with the first propeller fan 13 in a coaxial double crossing configuration, and is formed by biaxial counter-rotating. In the configuration, it is the first motor 21 that drives only the first propeller fan 13.
- the second unit 60 is composed of a second propeller fan 14 and a second motor 22 for driving the second propeller fan 14, and has a configuration that reverses with the first unit 50.
- FIG. 2 is a layout example comparative explanatory view illustrating the layout of the contra-rotating propeller fan unit 1 with an air-conditioning dosing ring according to the present invention.
- FIG. 2A shows a basic layout in which one motor 20 and one ringless propeller fan are used.
- FIG. 2B shows a layout corresponding to No. 1 in which the motor 20 is one and the propeller fan with a ring is one.
- FIG. 2C shows a layout corresponding to No. 2 in which the motor 20 is one and the ringless propeller fan is two.
- FIG. 2D shows a layout corresponding to No. 3 in which the motor 20 is one and the propeller fan with a ring is two.
- FIG. 2 (e) shows a layout corresponding to No.
- FIG. 4 in which there are two motors 20 and two ringless propeller fans.
- the layout corresponding to No. 5 is shown, and FIG. 2 (f) shows a layout in which two motors 20 and two propeller fans with rings are shown.
- the one corresponding to 6 is shown.
- the linear arrow shown on the drawing indicates the blowing direction, and the arc-shaped arrow indicates the rotation direction of the propeller fan.
- FIG. 3 is a structural explanatory view illustrating the structure of the propeller fan used in the counter-rotating propeller fan unit 1 with an air conditioning dosing ring according to the present invention
- FIG. 3A is a structural explanatory view showing the rotation of the first motor 21 in the first unit 50.
- the propeller fan arranged on the shaft is shown
- FIG. 3B shows the propeller fan 10 which is reversely driven by the second motor 22 in the second unit 60.
- the rib 15 of the ring portion 11 shown in FIG. 3 (a) is oriented so as to face both the suction side and the discharge side. It is desirable to exert the bell mouth function in any of the above.
- FIG. 4 shows a state in which the contra-rotating propeller fan unit 1 with a ring for air-conditioning according to the present invention has one motor 20 and two propeller fans with a ring coaxially intersected with each other and housed in a turning direction casing 40. It is an example explanatory drawing. Such a layout is configured to blow air in the turning direction of the counter-rotating propeller fan with a ring, and it is possible to suppress protrusion from the wearer.
- FIG. 5 shows an embodiment of the contra-rotating propeller fan unit 1 with a ring for air-conditioning according to the present invention, in which one motor 20 is coaxially crossed and two propeller fans with a ring are housed in an axial casing 40. It is explanatory drawing. Such a layout is configured to blow air in the axial direction of a counter-rotating propeller fan with a ring, so that there is little change in static pressure immediately after blowing, and it is possible to blow air into the air-conditioned clothes with a high static pressure H. Further, in the layout shown in FIGS. 4 and 5, since there is only one motor 20, there is an advantage that it is lightweight and consumes less power.
- FIG. 6 shows an embodiment in which the double propeller fan unit 1 with a ring for air conditioning according to the present invention has two motors 20 and two propeller fans with a ring inverted and housed in the turning direction casing 40. It is explanatory drawing.
- FIG. 7 shows an embodiment in which the double propeller fan unit 1 with a ring for air conditioning according to the present invention has two motors 20 and two propeller fans with a ring inverted and housed in the axial casing 40. It is explanatory drawing. Such a layout is configured to blow air in the axial direction of a counter-rotating propeller fan with a ring, so that there is little change in static pressure immediately after blowing, and it is possible to blow air into the air-conditioned clothes with a high static pressure H. Further, in the layout shown in FIGS. 6 and 7, since the number of motors 20 is two, the load is small even at the same rotation speed, so that a large air volume Q and a high static pressure H can be obtained while suppressing the amount of heat generated. There are merits
- the static pressure H was measured by a multi-nozzle fan air volume measuring device (F401-030-200) and a flow rate calculation system (F411) manufactured by Tsukubarika Seiki Co., Ltd. (212 Kaname, Tsukuba City, Ibaraki Prefecture). The results are shown in FIGS. 8 to 13, and the summary is shown in Table 1.
- FIG. 8 shows a graph and a data table showing the relationship between the static pressure H and the flow rate Q in the case of a single propeller fan having a diameter of 80 mm, a ringless propeller fan, and a motor 20 as a reference for comparison.
- 9 shows a graph and a data table showing the relationship between the static pressure H and the flow rate Q in the case where the diameter is 80 mm, one propeller fan with a ring, and one motor 20 are used alone
- FIG. Shows graphs and data tables showing the relationship between static pressure H and flow rate Q in the case of coaxial intersection of 80 mm diameter, two ringless propeller fans, and one motor 20, respectively.
- FIG. 11 shows a diameter of 80 mm.
- FIG. 12 shows a propeller with a diameter of 80 mm and no ring.
- FIG. 13 shows two propeller fans with a diameter of 80 mm and a ring.
- the graphs and data tables showing the relationship between the static pressure H and the flow rate Q in the case of two biaxial reversals of the motor 20 are shown above and below, respectively.
- the temperature is 24.7 degrees to 26.3 degrees.
- the temperature and humidity are in the range of 62.2% to 73.2% and the atmospheric pressure is in the range of 1001.1 hPa to 1012.6 hPa.
- FIG. 8 (FIG. 2 (a)) and 9 (FIG. 2 (b)) are measurements of the propeller fan 10 alone, and when compared with and without the ring portion 11, the maximum static pressure H and the maximum air volume Q Although there is no significant difference in the static pressure H in the intermediate region, the static pressure H without the ring portion 11 is slightly lower, and the one with the ring portion 11 shows stable characteristics.
- FIG. 10 (FIG. 2 (c)) and FIG. 11 (FIG. 2 (b)) are measurements of the propeller fan 10 at a coaxial double intersection.
- it is maximum to double the propeller fan 10 as compared with a single unit. It is improved with static pressure H and maximum air volume Q.
- a comparison with and without the ring portion 11 shows that the static pressure H without the ring portion 11 is slightly depressed in the intermediate region, and the static pressure H with the ring portion 11 is more stable. Further, it can be said that the static pressure H is higher with the ring portion 11 and the air volume Q is larger without the ring portion 11.
- FIG. 12 (FIG. 2 (e)) and 13 (FIG. 2 (f)) are measurements of the propeller fan 10 by counter-rotating the two axes.
- the propeller fan 10 is doubled as compared with the coaxial double crossing. Inversion improves the maximum static pressure H and the maximum air volume Q.
- the one without the ring portion 11 is slightly depressed in the intermediate region, and the one with the ring portion 11 is more stable.
- the static pressure H is higher with the ring portion 11, and the air volume Q is larger without the ring portion 11. It is considered that these are due to the counter-rotating effect and the rectifying effect that the ring portion 11 sends out the wind in the axial direction.
- a fan unit for air-conditioning that requires a high static pressure H is provided by a configuration in which a contra-rotating propeller fan is provided and an annular ring portion 11 connecting each blade 12 of the contra-rotating propeller fan is provided. It is said that it is suitable as.
- the contra-rotating propeller fan unit with an air-conditioning dosing ring according to the present invention, it is considered to have high industrial applicability because it contributes to the health of workers who need heat stroke countermeasures both indoors and outdoors. It is a thing.
- Double propeller fan unit with ring for air conditioning 10 Propeller fan 11 Ring part 12 Blade 13 First propeller fan 14 Second propeller fan 20 Motor 21 First motor 22 Second motor 30 Dustproof filter 40 Casing 41 Locking part 42 Clothes Scissors 43 Clothes slip prevention suction port 50 1st unit 60 2nd unit H Static pressure Q Air volume
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Abstract
Description
しかしながら、特許文献2に記載の技術は、二つのファンユニットの連結手段として、支柱の位置や、それぞれのベンチュリーケースの結合手段に工夫をしたものであり、高い静圧を得ることを課題とし、二重プロペラファンの何れにも各ブレードの外周縁部を繋ぐ環状のリング部を設けることでその課題を解決する本発明とは、解決課題及びその課題解決の技術的手段が異なっている。
しかしながら、特許文献3に記載の技術は、総面積の異なる第2インペラをフリー回転させることで、二つのモーターを用いる二重反転形式のファンと同様、或いは近似の作用効果を得ようとするものであって、高い静圧を得ることを課題とし、二重プロペラファンの何れにも各ブレードの外周縁部を繋ぐ環状のリング部を設けることでその課題を解決する本発明とは、解決課題及びその課題解決の技術的手段が異なっている。
なお、図面上に表した直線状の矢印は送風方向を示し、円弧状の矢印はプロペラファンの回転方向を示したものである。
10 プロペラファン
11 リング部
12 ブレード
13 第一プロペラファン
14 第二プロペラファン
20 モーター
21 第一モーター
22 第二モーター
30 防塵用フィルター
40 ケーシング
41 係止部
42 服はさみ部
43 服のズレ防止吸込口
50 第一ユニット
60 第二ユニット
H 静圧
Q 風量
Claims (6)
- 空調服に用いられるファンユニットであって、
プロペラファン(10)と、
モーター(20)と、
防塵用フィルター(30)と、
ケーシング(40)から構成され、
前記プロペラファン(10)を二重に配置するとともに、何れの前記プロペラファン(10)を構成する複数のブレード(12)の外縁を環状のリング部(11)によって繋げていることにより、送風される空気流のガイドの役割を果たし、前記リング部(11)の内側を流れる空気を回転軸の軸方向へ流れさせ高い静圧(H)を得るとともに、前記ブレード(12)の先端部の変形を防止することを特徴する空調服用リング付き二重プロペラファンユニット(1)。 - 前記モーター(20)の同一回転軸上に、前記リング部(11)を有する第一プロペラファン(13)と前記リング部(11)を有する第二プロペラファン(14)を備え、前記第一プロペラファン(13)の前記ブレード(12)と前記第二プロペラファン(14)の前記ブレード(12)が連続するように交差して配置していることを特徴とする同軸の二重プロペラファン形式による請求項1に記載の空調服用リング付き二重プロペラファンユニット(1)。
- 前記第一プロペラファン(13)及び該第一プロペラファン(13)を駆動する第一モーター(21)からなる第一ユニット(50)と、
前記第二プロペラファン(14)及び該第二プロペラファン(14)を駆動する第二モーター(22)からなる第二ユニット(60)とを有し、
前記第一プロペラファン(13)と、前記第二プロペラファン(14)の回転軸が同一直線上となるようにし、前記第一プロペラファン(13)と、前記第二プロペラファン(14)の回転方向が反転した二軸の二重反転プロペラファン形式により、異なる旋回方向の流れを相殺して回転軸方向へ直線的に送風し、高い静圧(H)を得ることを特徴とする請求項1に記載の空調服用リング付き二重プロペラファンユニット(1)。 - 前記ケーシング(40)に、防塵用フィルター(30)を設けたことを特徴とする請求項1から請求項3の何れかに記載の空調服用リング付き二重プロペラファンユニット(1)。
- 前記ケーシング(40)が、身体側の反対側底部から空気を吸い込み、身体側へ空気を吐き出すことを特徴とする請求項1から請求項4の何れかに記載の空調服用リング付き二重プロペラファンユニット(1)。
- 前記ケーシング(40)が、底部側から空気を吸い込み、上部側へ空気を吐き出すことを特徴とする請求項1から請求項4の何れかに記載の空調服用リング付き二重プロペラファンユニット(1)。
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Cited By (2)
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US11353031B1 (en) | 2021-06-29 | 2022-06-07 | Asia Vital Components Co., Ltd. | Series fan |
TWI780756B (zh) * | 2021-06-09 | 2022-10-11 | 奇鋐科技股份有限公司 | 串聯風扇 |
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