CN110621940A - Circulator - Google Patents

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Publication number
CN110621940A
CN110621940A CN201780089507.0A CN201780089507A CN110621940A CN 110621940 A CN110621940 A CN 110621940A CN 201780089507 A CN201780089507 A CN 201780089507A CN 110621940 A CN110621940 A CN 110621940A
Authority
CN
China
Prior art keywords
fan
circulator
oscillating
rotation
oscillating motion
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201780089507.0A
Other languages
Chinese (zh)
Inventor
柿沼正人
本田春雄
市冈英明
铃木俊二
恒川望
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mitsubishi Corp
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Mitsubishi Corp filed Critical Mitsubishi Corp
Priority to PCT/JP2017/017388 priority Critical patent/WO2018207236A1/en
Publication of CN110621940A publication Critical patent/CN110621940A/en
Pending legal-status Critical Current

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F7/00Ventilation
    • F24F7/007Ventilation with forced flow

Abstract

The circulator (20) is provided with: a cross flow fan (3); a fan housing (2) that determines the blowing direction of the airflow generated by the cross flow fan (3); an oscillating mechanism part (5) for oscillating the fan casing (2); a position detection mechanism for detecting that the fan casing (2) is at a predetermined position for stopping the oscillating motion, namely an oscillating stop position; and a control unit (21) that, when the oscillating motion of the fan case (2) is to be stopped at a specified oscillation stop position, stops the fan case (2) while the oscillating mechanism unit (5) performs the oscillating motion against a rotational moment generated by the self-weight of the fan case (2).

Description

Circulator
Technical Field
The present invention relates to a circulator for stirring indoor air.
Background
In the conventional circulator, the oscillating motion of the fan casing driven by the gear motor may be unstable.
Patent document 1 discloses a technique for stabilizing a panning motion by adjusting the position of the center of gravity of a blowing structure.
Prior art documents
Patent document
Patent document 1: japanese laid-open patent publication No. 2008-89206
Disclosure of Invention
Problems to be solved by the invention
The circulator is also pointed out to have a problem that the blowout part of the fan housing is deviated from the blowout direction specified by the remote controller. In the blowing structure disclosed in patent document 1, it is impossible to cope with a case where the blowing portion of the fan housing is deviated from the blowing direction specified by the remote controller.
The present invention has been made in view of the above problems, and an object of the present invention is to obtain a circulator which improves accuracy of an air blowing direction.
Means for solving the problems
In order to solve the above problems and achieve the object, the present invention includes: a blower; a fan housing that determines a blowing direction of an air flow generated by a blower; a head shaking mechanism part which causes the fan shell to shake head; and a position detection mechanism for detecting that the fan casing is at a swing stop position which is a predetermined position for stopping the swing motion. The present invention is provided with a control unit which stops the fan casing while the oscillating mechanism unit performs an oscillating motion against a rotational moment generated by the self weight of the fan casing when the oscillating motion of the fan casing is to be stopped at a specified oscillation stop position.
Effects of the invention
The circulator of the present invention achieves the effect of improving the accuracy of the blowing direction.
Drawings
Fig. 1 is a perspective view of a circulator according to embodiment 1 of the present invention.
Fig. 2 is a sectional view of the circulator of embodiment 1.
Fig. 3 is an enlarged view of the oscillating mechanism portion of the circulator according to embodiment 1.
Fig. 4 is a diagram showing a rotational operation of a fan casing of a circulator according to embodiment 1.
Fig. 5 is a diagram showing a configuration in which the function of the control unit of the circulator according to embodiment 1 is realized by hardware.
Fig. 6 is a diagram showing a configuration in which the function of the control unit of the circulator according to embodiment 1 is realized by software.
Detailed Description
Hereinafter, a circulator according to an embodiment of the present invention will be described in detail with reference to the drawings. The present invention is not limited to the embodiment.
Embodiment 1.
Fig. 1 is a perspective view of a circulator according to embodiment 1 of the present invention. Fig. 2 is a sectional view of the circulator of embodiment 1. In fig. 1, the top surface of the housing is not shown, and the internal structure is visually illustrated. The circulator 20 of embodiment 1 includes: a rectangular parallelepiped frame 1; a cross flow fan 3 as a centrifugal fan that generates an air flow in a direction orthogonal to the rotation shaft 13; a fan casing 2 that determines the blowing direction of the airflow generated by the cross flow fan 3; and an oscillating mechanism 5 that oscillates the fan casing 2 to change the blowing direction. The cross flow fan 3 rotates on the same axis as the fan housing 2. Suspension fittings 4 are provided on two opposite side surfaces of the housing 1. A balance weight 12 is attached to the fan housing 2.
The circulator 20 of embodiment 1 takes in air from a gap between the housing 1 and the fan casing 2 to form an intake airflow 6, and blows out a blown-out airflow 7 from the outlet 2a of the fan casing 2. That is, the circulator 20 of embodiment 1 sucks and blows an air flow from the same surface of the housing 1.
The circulator 20 according to embodiment 1 includes a control unit 21 for controlling the oscillating motion. The control unit 21 is connected to a remote controller 22 that receives user operations. When the user operates the remote controller 22, an instruction in accordance with the operation is transmitted from the remote controller 22 to the control unit 21.
Fig. 3 is an enlarged view of the oscillating mechanism portion of the circulator according to embodiment 1. The oscillating mechanism section 5 includes: a gear motor 8 as a driving source of the oscillating motion of the fan housing 2; and a crank 11 that converts the rotational motion of the shaft of the gear motor 8 into a reciprocating motion and transmits the reciprocating motion to the fan housing 2.
A position detection plate 9 is attached to the shaft of the gear motor 8. Further, a photo-interrupter 10 is provided with a position detection plate 9 interposed therebetween. The position detection plate 9 and the photo-interrupter 10 constitute a position detection mechanism that detects the oscillating position of the fan housing 2.
The position detection plate 9 has a plurality of protrusions 91 that block light of the photointerrupter 10. The protrusions 91 form a light-transmitting portion 92 that does not block light of the photointerrupter 10. The position detection plate 9 rotates together with the shaft of the gear motor 8, and thereby the position detection mechanism alternately repeats a light-shielding state in which the light of the photo-interrupter 10 is shielded and a light-transmitting state in which the light of the photo-interrupter 10 is not shielded during the driving of the gear motor 8. The projections 91 are not provided at equal intervals. Therefore, the position detection mechanism can determine the rotational position of the fan housing 2 based on the length of time of the light shielding state.
The control unit 21 receives the detection result of the photointerrupter 10. The control unit 21 performs control for switching between the swing operation by driving the gear motor 8 and the fixed wind direction by stopping the gear motor 8 based on a command input from the remote controller 22.
Fig. 4 is a diagram showing a rotational operation of a fan casing of a circulator according to embodiment 1. The chain double-dashed line indicates the positions of the fan case 2 at the top dead center and the bottom dead center of rotation. The position of the fan case 2 is changed from a1 to A3 through a2, and then returned to a1 through a 2. Here, a section from a1 through a2 to A3 of the position of the fan case 2 is defined as an outward route, and a section from A3 through a2 to a1 is defined as a return route. The center of gravity of the fan case 2 when the fan case 2 is located at a1 is G1. The center of gravity of the fan case 2 when the fan case 2 is located at a2 is G2. The center of gravity of the fan case 2 when the fan case 2 is located at a3 is G3. Fig. 4 also shows the position of the center of gravity of the fan case of the conventional circulator of the comparative example, which is compared with the circulator 20 of embodiment 1. The center of gravity of the fan case of the comparative example at a position a1 was G1'. The center of gravity of the fan case of the comparative example at a position a2 was G2'. The center of gravity of the fan case of the comparative example at a position a3 was G3'.
In the fan case of the circulator of the comparative example, in the cross section orthogonal to the rotation axis, the center of gravity position moves across the vertical line passing through the rotation axis, and therefore the direction of the rotational moment generated by the self weight of the fan case changes during the oscillating motion. In fig. 4, the rotational moment by its own weight when the fan case of the circulator of the comparative example is positioned at a1 is counterclockwise as indicated by an arrow M. The rotational moment by its own weight when the fan case is positioned at a3 is clockwise as indicated by arrow N. On the other hand, in the circulator 20 of embodiment 1, since the counterweight 12 is attached to the fan case 2, even if the fan case 2 is rotated, the center of gravity of the fan case 2 does not move across the vertical line V passing through the rotation axis 13 in the cross section orthogonal to the rotation axis 13. In fig. 4, the rotational moment by its own weight when the fan case 2 is positioned at a1 and the rotational moment by its own weight when the fan case 2 is positioned at A3 are clockwise as indicated by arrows P and Q. Therefore, the circulator 20 of embodiment 1 can realize smooth rotation of the fan casing 2.
In the circulator 20 according to embodiment 1, when the blowing direction of the airflow is specified, the control unit 21 stops the oscillating operation of the fan casing 2 at a position specified in the outbound section. In the outbound section, the geared motor 8 rotates the fan casing 2 against the rotational moment generated by the self-weight of the fan casing 2, and therefore, even if the geared motor 8 is stopped in the outbound path, the positional deviation in the blowing direction due to backlash does not occur. Therefore, the circulator 20 of embodiment 1 can achieve an improvement in the accuracy of the blowing direction.
On the other hand, in the circulator of the comparative example, the rotation direction of the gear motor is the same as the rotation direction of the rotation moment generated by the self weight of the fan case in the section from a1 to a2 in the outward route of the position of the fan case and in the section from A3 to a2 in the return route of the position of the fan case. Therefore, in the circulator of the comparative example, even when the gear motor is stopped in either of the forward path and the backward path, backlash in the gear mechanism portion causes rattling in the traveling direction of the fan housing. Thus, if the circulator of the comparative example is only limited in the moving direction of the fan case when the gear motor is stopped, the accuracy of the blowing direction of the airflow cannot be improved.
In the above description, the control unit 21 stops the oscillating motion of the fan casing 2 at the position designated in the forward section, but the control unit 21 may stop the oscillating motion of the fan casing 2 at the designated oscillating stop position regardless of the forward or backward path. In this case, when the oscillating motion of the fan housing 2 is stopped during the forward path, the accuracy of the blowing direction is improved.
In the above description, the counterweight 12 is provided in the fan casing 2 so that the direction of the rotational moment generated by the self weight of the fan casing 2 is one direction, but a configuration may be adopted in which the counterweight 12 is not provided. In this case, when the oscillating motion of the fan casing 2 is to be stopped in the section from a1 to a2, the control unit 21 stops the oscillating motion of the fan casing 2 in the circuit, and when the oscillating motion of the fan casing 2 is to be stopped in the section from a2 to A3, the control unit 21 stops the oscillating motion of the fan casing 2 in the forward path, thereby making it possible to improve the accuracy of the blowing direction.
In the above description, the fan case 2 and the counterweight 12 are configured as separate bodies, but the fan case 2 itself may be configured such that the rotational moment generated by its own weight is directed in one direction. That is, the balance weight 12 that makes the rotational moment by its own weight one direction may be a part of the fan housing 2.
The function of the control unit 21 in embodiment 1 described above is realized by a processing circuit. That is, the control unit 21 includes a processing circuit that stops the fan casing 2 while the oscillating mechanism unit 5 performs the oscillating operation against the rotational moment generated by the self weight of the fan casing 2 when the oscillating operation of the fan casing 2 is to be stopped at the specified oscillating stop position. The processing circuit may be dedicated hardware or may be an arithmetic device that executes a program stored in a storage device.
When the processing circuit is dedicated hardware, the processing circuit may correspond to a single circuit, a complex circuit, a programmed processor, a parallel programmed processor, an application specific integrated circuit, a field programmable gate array, or a combination thereof. Fig. 5 is a diagram showing a configuration in which the function of the control unit of the circulator according to embodiment 1 is realized by hardware. In the processing circuit 19, a logic circuit 19a is incorporated which realizes a process of stopping the fan casing 2 while the oscillating mechanism portion 5 performs an oscillating operation against a rotational moment generated by the self weight of the fan casing 2 when the oscillating operation of the fan casing 2 is to be stopped at a predetermined oscillating stop position.
When the processing circuit 19 is an arithmetic device, the processing of stopping the fan casing 2 while the oscillating mechanism 5 performs the oscillating operation against the rotational moment generated by the self weight of the fan casing 2 when the oscillating operation of the fan casing 2 is to be stopped at the specified oscillating stop position is realized by software, firmware, or a combination of software and firmware.
Fig. 6 is a diagram showing a configuration in which the function of the control unit of the circulator according to embodiment 1 is realized by software. The processing circuit 19 has: an arithmetic unit 191 for executing the program 19 b; a random access memory 192 used by the arithmetic device 191 in a work area; and a storage device 193 that stores the program 19 b. The arithmetic unit 191 expands the program 19b stored in the storage unit 193 in the random access memory 192 and executes the program, thereby realizing a process of stopping the fan casing 2 while the oscillating mechanism unit 5 performs the oscillating operation against the rotational moment generated by the self weight of the fan casing 2 when the oscillating operation of the fan casing 2 is to be stopped at the specified oscillating stop position. The software and firmware are described in a programming language and stored in the storage device 193. The arithmetic unit 191 may be exemplified by a central processing unit, but is not limited thereto.
The processing circuit 19 realizes each process by reading and executing the program 19b stored in the storage device 193. That is, the circulator 20 includes the storage device 193 for storing the program 19b, and when the program 19b is executed by the processing circuit 19, as a result, when the oscillating operation of the fan casing 2 is to be stopped at the specified oscillation stop position, the oscillating mechanism portion 5 stops the fan casing 2 while performing the oscillating operation against the rotational moment generated by the self weight of the fan casing 2. The program 19b may be a program for causing a computer to execute the above-described procedure and method.
In the processing for stopping the fan casing 2 while the oscillating mechanism 5 performs the oscillating operation against the rotational moment generated by the self weight of the fan casing 2 when the oscillating operation of the fan casing 2 is to be stopped at the specified oscillating stop position, a part of the processing may be realized by dedicated hardware, and a part of the processing may be realized by software or firmware.
Thus, the processing circuit 19 can implement the above-described functions by hardware, software, firmware, or a combination thereof.
The configuration described in the above embodiment is an example of the contents of the present invention, and may be combined with other known techniques, or a part of the configuration may be omitted or modified within a range not departing from the gist of the present invention.
Description of the reference numerals
1 frame, 2 fan casings, 3 cross flow fans, 4 suspension fittings, 5 head shaking mechanism parts, 8 gear motors, 9 position detection plates, 10 photo-interrupters, 11 cranks, 12 balance weights, 13 rotating shafts, 20 circulators, 21 control parts, 22 remote controllers, 91 protruding parts and 92 light-transmitting parts.

Claims (5)

1. A circulator is characterized by comprising:
a blower;
a fan housing that determines a blowing direction of an air flow generated by the blower;
a head shaking mechanism part which causes the fan shell to shake the head;
a position detection unit that detects that the fan case is at a panning stop position that is a predetermined position at which the panning operation is stopped; and
a control part which stops the fan shell during the shaking motion against the rotation moment generated by the self weight of the fan shell when the shaking motion of the fan shell is stopped at the appointed shaking stop position.
2. A circulator is characterized by comprising:
a blower;
a fan housing that determines a blowing direction of an air flow generated by the blower;
a head shaking mechanism part which causes the fan shell to shake the head; and
a position detection means for detecting that the fan case is at a panning stop position which is a predetermined position at which the panning operation is stopped,
the fan housing is in a range of rotation based on the oscillating motion, and the rotational moment generated by the self-weight is in the same rotational direction.
3. The circulator of claim 2 wherein,
the fan case includes a balance weight that moves the center of gravity of the fan case to a position where the rotational moment due to its own weight is in the same rotational direction within a range of rotation based on the oscillating motion.
4. The circulator of claim 2 wherein,
the circulator has a control portion which stops the fan casing during the oscillating motion against a rotational moment generated by a self-weight of the fan casing when the oscillating motion of the fan casing is to be stopped at a specified oscillating stop position.
5. The circulator of claim 1 or 4 wherein,
the position detection mechanism includes:
a position detection plate that rotates in synchronization with the oscillating motion of the fan case and includes a plurality of protrusions protruding in a diameter expansion direction on an outer peripheral portion; and
a photointerrupter that blocks light when the protruding portions pass by rotation of the position detection plate and does not block light when light-transmitting portions between the protruding portions pass,
at least one of the protruding portion and the light transmitting portion has a dimension in the rotation direction of the position detection plate different from a dimension of the other protruding portion or the other light transmitting portion in the rotation direction of the position detection plate,
the control unit determines a moving direction of the oscillating motion of the fan housing based on a light shielding state of the photo interrupter.
CN201780089507.0A 2017-05-08 2017-05-08 Circulator Pending CN110621940A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/JP2017/017388 WO2018207236A1 (en) 2017-05-08 2017-05-08 Circulator

Publications (1)

Publication Number Publication Date
CN110621940A true CN110621940A (en) 2019-12-27

Family

ID=64104419

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201780089507.0A Pending CN110621940A (en) 2017-05-08 2017-05-08 Circulator

Country Status (3)

Country Link
JP (1) JP6752364B2 (en)
CN (1) CN110621940A (en)
WO (1) WO2018207236A1 (en)

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2034206U (en) * 1987-07-11 1989-03-15 李春华 Oscillating electric fan without gear wheel
JP2006274840A (en) * 2005-03-28 2006-10-12 Mitsubishi Electric Corp Cross-flow fan
JP2008089206A (en) * 2006-09-29 2008-04-17 Daikin Ind Ltd Blow out opening structure of air conditioner
CN102753897A (en) * 2010-01-06 2012-10-24 夏普株式会社 Air blowing fan, circulator, micro-particle diffusion device, and air circulation method
CN104204536A (en) * 2012-04-09 2014-12-10 夏普株式会社 Air-blowing device
CN104508970A (en) * 2012-07-30 2015-04-08 大金工业株式会社 Rotation position detection device and air conditioner
CN204985001U (en) * 2015-07-21 2016-01-20 长乐市丽智产品设计有限公司 Blow fan of angularly adjustable
CN105545786A (en) * 2016-01-28 2016-05-04 广东美的环境电器制造有限公司 Control method for fan and fan

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6407503B2 (en) * 2011-06-14 2018-10-17 株式会社フジミインコーポレーテッド Polishing composition

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2034206U (en) * 1987-07-11 1989-03-15 李春华 Oscillating electric fan without gear wheel
JP2006274840A (en) * 2005-03-28 2006-10-12 Mitsubishi Electric Corp Cross-flow fan
JP2008089206A (en) * 2006-09-29 2008-04-17 Daikin Ind Ltd Blow out opening structure of air conditioner
CN102753897A (en) * 2010-01-06 2012-10-24 夏普株式会社 Air blowing fan, circulator, micro-particle diffusion device, and air circulation method
CN104204536A (en) * 2012-04-09 2014-12-10 夏普株式会社 Air-blowing device
CN104508970A (en) * 2012-07-30 2015-04-08 大金工业株式会社 Rotation position detection device and air conditioner
CN204985001U (en) * 2015-07-21 2016-01-20 长乐市丽智产品设计有限公司 Blow fan of angularly adjustable
CN105545786A (en) * 2016-01-28 2016-05-04 广东美的环境电器制造有限公司 Control method for fan and fan

Also Published As

Publication number Publication date
WO2018207236A1 (en) 2018-11-15
JPWO2018207236A1 (en) 2019-07-25
JP6752364B2 (en) 2020-09-09

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