KR19980023018U - Voltage fluctuation compensation circuit of air conditioner - Google Patents

Voltage fluctuation compensation circuit of air conditioner Download PDF

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Publication number
KR19980023018U
KR19980023018U KR2019960036393U KR19960036393U KR19980023018U KR 19980023018 U KR19980023018 U KR 19980023018U KR 2019960036393 U KR2019960036393 U KR 2019960036393U KR 19960036393 U KR19960036393 U KR 19960036393U KR 19980023018 U KR19980023018 U KR 19980023018U
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South Korea
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rotation speed
fan motor
indoor fan
phase
voltage fluctuation
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KR2019960036393U
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Korean (ko)
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이노정
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배순훈
대우전자 주식회사
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Priority to KR2019960036393U priority Critical patent/KR19980023018U/en
Publication of KR19980023018U publication Critical patent/KR19980023018U/en

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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00Control or safety arrangements
    • F24F11/88Electrical aspects, e.g. circuits
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00Control or safety arrangements
    • F24F11/62Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
    • F24F11/63Electronic processing

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  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fuzzy Systems (AREA)
  • Mathematical Physics (AREA)
  • Air Conditioning Control Device (AREA)

Abstract

본 고안은 공기조화기의 전압변동 보상회로에 관한 것으로서, 보다 상세하게는 상용 전원의 변동분에 따라 위상보정을 실행하여 팬모터의 회전(RPM)이 입력 전압변동에 관계없이 회전이 일정해지도록 한 공기조화기의 전압변동 보상회로에 관한 것이다.The present invention relates to a voltage fluctuation compensating circuit of an air conditioner. More specifically, the phase compensation is performed according to the variation of commercial power so that the rotation of the fan motor (RPM) becomes constant regardless of the input voltage fluctuation. It relates to a voltage fluctuation compensating circuit of an air conditioner.

본 고안은 특히, 회전수가 가변되는 실내팬모터(M)와, 쌍방향성 다이리스터(3)를 통해 위상제어된 전류가 인가되어 설정된 회전수로 실내팬모터(M)가 회전케 한 위상제어회로(2)와, 상기 실내팬모터(M)의 회전수를 검출하는 회전수검출부(4)와, 상기 회전수검출부(4)로부터 회전수를 득출한 후 설정된 회전수와 비교한 결과에 의해 적정한 위상각 보정신호를 인가하는 제어수단(1)으로 구성된 것을 그 특징으로 한 것으로서, 전압변동에 따른 실내팬모터의 저하를 방지할 수 있다.In particular, the present invention is a phase control circuit in which an indoor fan motor (M) having a variable rotation speed and an indoor fan motor (M) are rotated at a set rotation speed by applying a phase-controlled current through the bidirectional die Lister (3). (2), the rotation speed detection unit 4 which detects the rotation speed of the indoor fan motor M, and the rotation speed is obtained from the rotation speed detection unit 4, and then the result is compared with the set rotation speed. It is characterized by comprising a control means (1) for applying a phase angle correction signal, it is possible to prevent the deterioration of the indoor fan motor due to the voltage fluctuation.

Description

공기조화기의 전압변동 보상회로Voltage fluctuation compensation circuit of air conditioner

본 고안은 공기조화기의 전압변동 보상회로에 관한 것으로서, 보다 상세하게는 상용 전원의 변동분에 따라 위상보정을 실행하여 팬모터의 회전(RPM)이 입력 전압변동에 관계없이 회전이 일정해지도록 한 공기조화기의 전압변동 보상회로에 관한 것이다.The present invention relates to a voltage fluctuation compensating circuit of an air conditioner. More specifically, the phase compensation is performed according to the variation of commercial power so that the rotation of the fan motor (RPM) becomes constant regardless of the input voltage fluctuation. It relates to a voltage fluctuation compensating circuit of an air conditioner.

일반적으로 공기조화기는 압축기, 열교환기, 사방밸브 모세관 등과 같이 냉매사이클을 구성하는 요소와, 이를 구동하고 조정하는 콘틀롤러로 구성되는데, 이때의 냉매흐름을 살펴보면 압축기에서 나온 고온고압의 기체냉매는 사방밸브를 거쳐 실외 열교환기로 들어가고, 고온의 열을 외부로 방열시키면서 응축되어 상온 고압의 액채 냉매가 된다.In general, an air conditioner is composed of a component that constitutes a refrigerant cycle, such as a compressor, a heat exchanger, a four-way valve capillary, and a controller for driving and regulating the refrigerant. At this time, the high-temperature, high-pressure gas refrigerant from the compressor is everywhere. It enters an outdoor heat exchanger via a valve, and condenses while dissipating high temperature heat to the outside to form a liquid refrigerant at room temperature and high pressure.

이 응축열은 실외팬이 회전함에 따라 외부공기를 덮이게 되고 실외열교환기에서 나온 냉매는 내경이 매우 가는 모세관과 역지밸브를 통과하면서 감압되어 저온 저압의 액체 냉매가 되며, 넓어진 실내 열교환기로 들어가 증발하면서 외부로 열을 빼앗게 된다.This condensation heat is covered with external air as the outdoor fan rotates, and the refrigerant from the outdoor heat exchanger is decompressed as it passes through a capillary tube and check valve with a very large inner diameter, and becomes a low-temperature, low-pressure liquid refrigerant. The heat is taken away.

그러므로 실내 열교환기는 냉각되고 실내팬이 회전함에 따라 공기의 열교환이 일어나 실내온도가 낮아지게 된다.Therefore, as the indoor heat exchanger cools down and the indoor fan rotates, heat exchange occurs in the air to lower the indoor temperature.

따라서 실내팬의 적정한 회전유지는 열교환기의 효율증진에서 필수적이다. 그런데, 통상 상용전원은 사용지역이나 시간 등에 따라 조금씩 다름은(통상 공기조화기에 투입되는 전압은 ±15%)주지한 사실이나, 종래 공기조화기는 상기와 같은 변동요인을 무시한 상태로 운전함으로써 냉방능력을 저하시키는 요인을 발생시켰다. 즉, 전압저하에 따른 실내팬의 회전이 저하된 상태로 냉방이 진행되는 관계로 토출구에서 분출되는 바람이 미지근 할뿐 아니라, 열교환기의 효율도 저하되는 등 여러 가지 문제점이 노출되었던 것이다.Therefore, maintaining proper rotation of indoor fan is essential for improving efficiency of heat exchanger. However, the fact that commercial power supply varies slightly depending on the use area and time (usually ± 15% of the voltage input to the air conditioner) is known.However, the conventional air conditioner operates by ignoring the above-mentioned fluctuation factors. The factor which lowered the was caused. That is, as the cooling of the indoor fan is lowered due to the voltage drop, the wind emitted from the discharge port is not only lukewarm, but the efficiency of the heat exchanger is also reduced.

본 고안은 상기와 같은 문제점을 감안하여 안출된 것으로서, 그 목적은 상용 전원의 변동분에 따른 위상제어로 실내 팬모터의 회전(RPM)을 적정하게 유지함으로써 냉방능력 저하를 방지할수 있도록 한 공기조화기의 전압변동 보상회로를 제공함에 있다.The present invention was devised in view of the above problems, and its purpose is to maintain the rotation (RPM) of the indoor fan motor appropriately by controlling the phase according to the variation of the commercial power supply. It is to provide a voltage variation compensation circuit of.

도 1은 본 고안 공기조화기의 전압 변동 보상 일 예를 보인 회로도,1 is a circuit diagram showing an example of voltage fluctuation compensation of the present invention air conditioner,

도 2는 본 고안 공기조화기의 전압변동 보상 제어 수순도,2 is a flowchart illustrating voltage fluctuation compensation control of the present invention air conditioner,

도 3은 본 고안 전압변동에 따른 위상보정을 보인 도표.Figure 3 is a diagram showing a phase correction according to the voltage variation of the present invention.

도면의 주요 부분에 대한 부호 설명Explanation of symbols for the main parts of the drawings

1 - 제어수단,2 - 위상제어회로,1-control means, 2-phase control circuit,

3 - 쌍방향성 다이리스터,4 - 회전수검출부.3-bidirectional thyristors, 4-speed detection.

상기의 목적을 달성하기 위한 본 고안은 회전수가 가변되는 실내팬모터와, 쌍방향성 다이리스터를 통해 위상제어된 전류가 인가되어 설정된 회전수로 실내팬모터가 회전케 한 위상제어회로와, 상기 실내팬모터의 회전수를 검출하는 회전수검출부와, 상기 회전수검출부로부터 회전수를 득출한 후 설정된 회전수와 비교한 결과에 의해 적정한 위상각 보정신호를 인가하는 제어수단으로 구성된 특징이 있다.The present invention for achieving the above object is an indoor fan motor of which the rotation speed is variable, a phase control circuit rotated by the indoor fan motor at a set speed by applying a phase controlled current through the bidirectional thyristors, and the indoor The rotation speed detection unit detects the rotation speed of the fan motor, and the control means for applying an appropriate phase angle correction signal based on a result obtained by comparing the rotation speed with the rotation speed obtained from the rotation speed detection unit.

이하, 첨부된 도면에 의거하여 본 고안의 바람직한 일 실시예를 상세히 설명하면 다음과 같다.Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

도 1은 본 고안 공기조화기의 전압 변동 보상 일 예를 보인 회로도, 도 2는 본 고안 공기조화기의 전압변동 보상 제어 수순도, 도 3은 본 고안 전압변동에 따른 위상보정을 보인 도표이다.1 is a circuit diagram showing an example of voltage fluctuation compensation of the present invention air conditioner, Figure 2 is a voltage fluctuation compensation control procedure of the present invention air conditioner, Figure 3 is a diagram showing a phase correction according to the voltage change of the present invention.

본 고안은 도 1에 있어서, 부호 M은 공기조화기의 실내 열교환기가 냉각되며, 실내팬 회전에 의해 공기의 열교환이 일어나 실내온도가 낮아지게 하는 실내팬모터로써 후술하는 위상제어신호에 의해 회전수가 가변된다. 또,(3)은 상기 실내팬모터(M)와 접속된 쌍방향성 다이리스터이며, (2)는 상기 쌍방향성 다이리스터(3)로 게이트신호에 의해 교류전원에 의해 동작되는 실내팬모터(M)에 대한 도통각을 가변하여 회전수를 제어하는 위상제어회로이다.In the present invention, in Fig. 1, reference numeral M denotes an indoor fan motor that cools an indoor heat exchanger of an air conditioner and causes heat exchange of air due to an indoor fan rotation, thereby lowering the indoor temperature. Variable. In addition, (3) is a bidirectional die lister connected to the indoor fan motor (M), (2) is a bidirectional die lister (3) is an indoor fan motor (M) operated by an AC power source by a gate signal. The phase control circuit controls the rotation speed by varying the conduction angle with respect to

(4)는 상기 실내팬모터(M)의 회전수를 검출하여 후술하는 제어수단에 입력하는 회전수검출부이다.(4) is a rotation speed detection part which detects the rotation speed of the said indoor fan motor M, and inputs it to the control means mentioned later.

(1)은 입력단(P2) 및 출력단(P1)이 구비되어 입력단(P2)의 회전수검출부(4)로부터 회전수를 득출한 후 미리 설정된 회전수와 비교한 결과에 의해 출력단(P3)으로 적정한 위상각 보정신호를 인가하는 제어수단이다.(1) is provided with an input terminal P2 and an output terminal P1 to obtain the rotational speed from the rotational speed detection unit 4 of the input terminal P2, and then to the output terminal P3 according to the result of comparing with the preset rotational speed. Control means for applying a phase angle correction signal.

상기와 같이 구성된 본 고안은 일 예로 도 3에 표현된 바와 같이, 정상적인 전압 220V에서는 회전수 1350 RPM, 이에따른 위상보정은 0ms로, 강하된 전압이 210V이면 회전수 1200 RPM, 위상보정값은 3ms로, 강하된 전압이 200V이면 회전수 1100 RPM, 위상보정값은 5ms로, 강하된 전압이 190V이면 회전수 1000 RPM, 위상보정값은 8ms로, 강하된 전압이 180V이면 회전수 900 RPM, 위상보정값은 10ms로 지정된다.As shown in FIG. 3, the present invention configured as described above has a rotational speed of 1350 RPM and a phase correction of 0 ms at a normal voltage of 220 V, and a rotation speed of 1200 RPM and a phase correction value of 3 ms if the dropped voltage is 210 V. If the dropped voltage is 200V, the rotation speed is 1100 RPM, the phase correction value is 5ms, and if the dropped voltage is 190V, the rotation speed is 1000 RPM, the phase correction value is 8ms, and if the dropped voltage is 180V, the speed is 900 RPM, the phase The correction value is specified as 10ms.

이와같이 구성된 본 고안은 도 2의 제어수순으로 동작 제어되는데, 즉, 공기조화기의 압축기에서 나온 고온고압의 기체냉매는 실외 열교환기로 들어가고, 고온의 열을 외부로 방열시키면서 응축되어 상온 고압의 액채 냉매가 되어 실외팬이 회전함에 따라 외부공기를 덮이고, 실외 열교환기에서 나온 냉매는 내경이 매우가는 모세관과 역지밸브를 통과하면서 감압되어 저온 저압의 액체 냉매가 되며, 넓어진 실내 열교환기로 들어가 증발하면서 외부로 열을 빼앗게 된다. 이에따라 실내 열교환기는 냉각되고, 실내팬모터의 회전에 따라 공기의 열교환이 일어나 실내온도가 낮아지게 되는 통상의 작용을 개시(S1)한 후, 회전수검출부(4)로부터 상기 실내팬모터(M) 회전수를 검출하여 제어수단(1)에 입력한다.The present invention configured as described above is operated and controlled in the control procedure of FIG. As the outdoor fan rotates to cover the outside air, the refrigerant from the outdoor heat exchanger is decompressed to pass through the capillary tube and check valve with a very small inner diameter to become a low-temperature, low-pressure liquid refrigerant. The heat is taken away. Accordingly, the indoor heat exchanger is cooled, and since the heat exchange of air occurs as the indoor fan motor rotates to start the normal operation of lowering the indoor temperature (S1), the indoor fan motor (M) is rotated from the rotational speed detection unit (4). The rotation speed is detected and input to the control means 1.

제어수단(1)은 입력단(P2)으로 검출된 데이터의 회전수를 근거로 적정한 전압인가를 비교판단하는데, 이때 입력된 회전수가 설정된 전압별 회전수인 1350 RPM이면 적정한 전압 및 회전수로 판단하여 그 위상각 0ms 즉, 이전의 상태로 계속된 제어를 가하여 동작이 이루어지도록 하는(S4) 반면, 입력된 회전수가 설정된 전압별 회전수인 1200 RPM이면 변동분 전압 210V로 판단하여 위상제어회로(2)를 통해 위상각 보정신호 3ms를 위상제어하여 쌍방향성 다이리스터(3)의 게이트신호로 교류전원에 의해 동작되는 실내팬모터(M)에 대한 도통각을 가변시켜(S5) 변동분 전압에 대한 적정한 회전이 발생되게 한다.The control means 1 compares the application of the proper voltage on the basis of the number of revolutions of the data detected by the input terminal (P2), and if the input number of rotations is 1350 RPM, which is the set number of revolutions per voltage, it is determined that the proper voltage and number of revolutions The phase angle is 0ms, i.e., the operation is performed by continuing the control in the previous state (S4). However, if the input rotational speed is 1200 RPM, which is the rotational speed for each set voltage, it is judged as the variable voltage 210V and the phase control circuit 2 Phase control of the phase angle correction signal 3ms by means of varying the conduction angle for the indoor fan motor (M) operated by the AC power source as the gate signal of the bidirectional thyristors (S5) to properly rotate the variable voltage Causes this to occur.

상기한 입력된 회전수가 설정된 전압별 회전수인 1100 RPM이면 변동분 전압 200V로 판단하여 위상제어회로(2)를 통해 위상각 보정신호 5ms를 위상제어하여 쌍방향성 다이리스터(3)의 게이트신호로 교류전원에 의해 동작되는 실내팬모터(M)에 대한 도통각을 가변시켜 변동분 전압에 대한 적정한 회전이 발생되게 한다.When the input rotational speed is 1100 RPM, which is the set rotational speed for each voltage, it is determined as a variable voltage of 200V, and phase control of the phase angle correction signal 5ms through the phase control circuit 2 is performed by the gate signal of the bidirectional thyristor 3. By varying the conduction angle with respect to the indoor fan motor (M) operated by the power source to the appropriate rotation to the variable voltage.

상기한 입력된 회전수가 설정된 전압별 회전수인 1000 RPM이면 변동분 전압 190V로 판단하여 위상제어회로(2)를 통해 위상각 보정신호 8ms를 위상제어하여 쌍방향성 다이리스터(3)의 게이트신호로 교류전원에 의해 동작되는 실내팬모터(M)에 대한 도통각을 가변시켜 변동분 전압에 대한 적정한 회전이 발생되게 한다.If the input rotation speed is 1000 RPM, which is the set speed of each voltage, it is determined as the variable voltage 190V, and phase control of the phase angle correction signal 8ms through the phase control circuit 2 is carried out as the gate signal of the bidirectional thyristor 3. By varying the conduction angle with respect to the indoor fan motor (M) operated by the power source to the appropriate rotation to the variable voltage.

상기한 입력된 회전수가 설정된 전압별 회전수인 900 RPM이면 변동분 전압 180V로 판단하여 위상제어회로(2)를 통해 위상각 보정신호 10ms를 위상제어하여 쌍방향성 다이리스터(3)의 게이트신호로 교류전원에 의해 동작되는 실내팬모터(M)에 대한 도통각을 가변시켜 변동분 전압에 대한 적정한 회전에 의해 실내 열교환기가 냉각되어 적절히 공기의 열교환이 일어나게 한다.If the input rotational speed is 900 RPM, which is the rotational speed for each set voltage, it is determined that the variable voltage 180V is used to phase-control the phase angle correction signal 10ms through the phase control circuit 2 to generate an AC signal as a gate signal of the bidirectional thyristor 3. By varying the conduction angle with respect to the indoor fan motor (M) operated by the power source, the indoor heat exchanger is cooled by appropriate rotation with respect to the variable voltage so that heat exchange of air occurs properly.

이상에서 살펴본 바와 같이 본 고안은 상용 전원의 변동분에 따른 적절한 위상제어로 실내 팬모터의 회전을 적정하게 유지함으로써, 냉방능력 저하를 방지할 수 있다.As described above, the present invention can prevent the lowering of the cooling capacity by appropriately maintaining the rotation of the indoor fan motor by appropriate phase control according to the variation of the commercial power source.

이상의 설명은 본 고안의 일 실시예에 불과하며, 본 고안의 그 구성요지 범위내에서 얼마든지 변경이 가능하다.The above description is only one embodiment of the present invention, and any change may be made within the scope of the present invention.

Claims (1)

회전수가 가변되는 실내팬모터(M)와, 쌍방향성 다이리스터(3)를 통해 위상제어된 전류가 인가되어 설정된 회전수로 실내팬모터(M)가 회전케 한 위상제어회로(2)와, 상기 실내팬모터(M)의 회전수를 검출하는 회전수검출부(4)와, 상기 회전수검출부(4)로부터 회전수를 득출한 후 설정된 회전수와 비교한 결과에 의해 적정한 위상각 보정신호를 인가하는 제어수단(1)으로 구성된 것을 특징으로 한 공기조화기의 전압변동 보상회로.An indoor fan motor M having a variable rotational speed, a phase control circuit 2 in which the indoor fan motor M is rotated at a set rotational speed by applying a phase controlled current through the bidirectional thyristor 3, An appropriate phase angle correction signal is obtained by comparing the rotation speed detection unit 4 for detecting the rotation speed of the indoor fan motor M with the rotation speed obtained from the rotation speed detection unit 4 and then comparing the rotation speed with the set rotation speed. Voltage fluctuation compensating circuit of the air conditioner, characterized in that the control means for applying (1).
KR2019960036393U 1996-10-30 1996-10-30 Voltage fluctuation compensation circuit of air conditioner KR19980023018U (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101108322B1 (en) * 2004-05-17 2012-01-25 도시바 테크 가부시키가이샤 Motor Control Apparatus and Electric Appliance using the same

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101108322B1 (en) * 2004-05-17 2012-01-25 도시바 테크 가부시키가이샤 Motor Control Apparatus and Electric Appliance using the same

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