TWI679382B - Outdoor unit of air conditioner, and air conditioner - Google Patents
Outdoor unit of air conditioner, and air conditioner Download PDFInfo
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- TWI679382B TWI679382B TW107122236A TW107122236A TWI679382B TW I679382 B TWI679382 B TW I679382B TW 107122236 A TW107122236 A TW 107122236A TW 107122236 A TW107122236 A TW 107122236A TW I679382 B TWI679382 B TW I679382B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
- F24F1/06—Separate outdoor units, e.g. outdoor unit to be linked to a separate room comprising a compressor and a heat exchanger
- F24F1/20—Electric components for separate outdoor units
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/88—Electrical aspects, e.g. circuits
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- Combustion & Propulsion (AREA)
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Abstract
[課題] 提供可靠性高、且低成本的空氣調和機之室外機等。 [解決手段] 用以驅動壓縮機的額定電流為預定值以上的壓縮機用變流器電路(5e)、及用以驅動室外風扇的額定電流為未達前述預定值的風扇用變流器電路(5f)被構裝在一塊控制基板(B)，壓縮機用變流器電路(5e)及風扇用變流器電路(5f)係透過配線(p、q、m、n)而連接在將交流電壓轉換成直流電壓的交直流轉換器(5b)，在配線(m、n)係設有將電雜訊減低的共模線圈(5g)。[Question] Provide outdoor units for air conditioners with high reliability and low cost. [Solution] A compressor converter circuit (5e) for driving a compressor with a rated current of more than a predetermined value, and a fan converter circuit for driving an outdoor fan with a rated current of less than the predetermined value (5f) It is constructed on a control board (B). The compressor converter circuit (5e) and the fan converter circuit (5f) are connected to each other through wiring (p, q, m, n). An AC / DC converter (5b) for converting an AC voltage into a DC voltage, and a common mode coil (5g) for reducing electrical noise is provided on the wiring (m, n).
Description
本發明係關於空氣調和機之室外機、及空氣調和機。The present invention relates to an outdoor unit of an air conditioner and an air conditioner.
關於構裝用以驅動室外機之壓縮機的壓縮機用變流器、或用以驅動室外風扇的風扇用變流器等的基板，已知例如專利文獻1所記載之技術。亦即，在專利文獻1中係記載：將「壓縮機用變流器電路、…複數風扇用變流器電路及…運算裝置(微電腦)」構裝在一塊變流器基板。 [先前技術文獻] [專利文獻]As a substrate for constructing a compressor converter for driving a compressor of an outdoor unit, or a fan converter for driving an outdoor fan, a technology described in Patent Document 1, for example, is known. That is, Patent Document 1 describes that a “converter circuit for a compressor, a converter circuit for a plurality of fans, and a computing device (microcomputer)” are mounted on a single converter substrate. [Prior Art Literature] [Patent Literature]
[專利文獻1] 國際公開第2016/006106號[Patent Document 1] International Publication No. 2016/006106
(發明所欲解決之課題)(Problems to be solved by the invention)
一般而言，流至壓縮機用變流器電路的電流係大於流至風扇用變流器電路的電流。在專利文獻1所記載的技術中，因前述電流大小不同、或基板的配線圖案的阻抗等，有在壓縮機用變流器電路的基準電位(母線的電位)、與小電流用變流器電路的基準電位(母線的電位)之間產生電位差的可能性。該電位差由於伴隨各變流器電路所具備的切換元件的ON/OFF而在時間上一點一點地變動，因此發生電雜訊，視情況，有引起風扇用變流器電路等錯誤動作的可能性。因此，圖求更加提高空氣調和機的可靠性，此外，達成低成本化。Generally, the current flowing to the compressor converter circuit is larger than the current flowing to the fan converter circuit. In the technology described in Patent Document 1, there are a reference potential (a potential of a bus bar) in a compressor converter circuit, and a small-current converter due to a difference in current magnitude or impedance of a wiring pattern on a substrate. The potential of a potential difference between the reference potential of the circuit (the potential of the bus bar). This potential difference fluctuates in time with the ON / OFF of the switching element included in each converter circuit. Therefore, electrical noise occurs. Depending on the situation, there may be malfunctions such as fan converter circuits. possibility. Therefore, the figure seeks to further improve the reliability of the air conditioner and to reduce costs.
因此，本發明之課題在提供可靠性高、且低成本的空氣調和機之室外機等。 (解決課題之手段)Therefore, an object of the present invention is to provide an outdoor unit of an air conditioner with high reliability and low cost. (Means for solving problems)
為解決前述課題，本發明之特徵為：用以驅動壓縮機的額定電流為預定值以上的大電流用變流器電路、及用以驅動室外風扇的額定電流為未達前述預定值的小電流用變流器電路被構裝在一塊控制基板，前述大電流用變流器電路及前述小電流用變流器電路係其輸入側透過配線而連接在將交流電壓轉換成直流電壓的交直流轉換器，在前述配線係設有將電雜訊減低的雜訊減低元件。其中，前述之「配線」係包含控制基板(印刷基板)的配線圖案。 (發明之效果)In order to solve the foregoing problems, the present invention is characterized by a high-current converter circuit for driving a compressor with a rated current of more than a predetermined value, and a small current for driving an outdoor fan with a rated current that does not reach the predetermined value. The converter circuit is constructed on a control substrate. The input circuit for the high current converter and the converter circuit for the small current are connected to the AC-DC converter that converts the AC voltage to the DC voltage through wiring. A noise reduction element for reducing electrical noise is provided in the wiring system. The “wiring” mentioned above refers to a wiring pattern including a control board (printed board). (Effect of the invention)
藉由本發明，可提供可靠性高、且低成本的空氣調和機之室外機等。According to the present invention, it is possible to provide an outdoor unit of an air conditioner with high reliability and low cost.
≪第1實施形態≫ ＜空氣調和機的構成＞ 圖1係空氣調和機W所具備的冷媒電路Q的說明圖。 其中，圖1的實線箭號係表示暖氣設備運轉時的冷媒流。此外，圖1的虛線箭號係表示冷氣設備運轉時的冷媒流。 圖1所示之空氣調和機W係藉由以冷凍循環(熱泵循環)使冷媒作循環，來進行空調的機器。≪First Embodiment≫ <Configuration of Air Conditioner> FIG. 1 is an explanatory diagram of a refrigerant circuit Q included in the air conditioner W. FIG. Among them, the solid arrows in FIG. 1 indicate the refrigerant flow during heating operation. The dotted arrows in FIG. 1 indicate the refrigerant flow when the air-conditioning equipment is operating.之 The air conditioner W shown in FIG. 1 is a device that performs air conditioning by circulating a refrigerant in a refrigeration cycle (heat pump cycle).
如圖1所示，空氣調和機W係具備有：壓縮機1、室外熱交換器2、室外風扇3、四通閥4、及室外控制電路5，該等機器被設在室外機Go。此外，空氣調和機W係前述構成之外，具備有：膨脹閥6、室內熱交換器7、室內風扇8、及室內控制電路9，該等機器被設在室內機Gi。As shown in FIG. 1, the air conditioner W is provided with a compressor 1, an outdoor heat exchanger 2, an outdoor fan 3, a four-way valve 4, and an outdoor control circuit 5. These devices are installed in the outdoor unit Go. The air conditioner W has an expansion valve 6, an indoor heat exchanger 7, an indoor fan 8, and an indoor control circuit 9 in addition to the aforementioned configuration. These devices are provided in the indoor unit Gi.
壓縮機1係藉由壓縮機馬達1a(圖2中記載為「CM」)的驅動，壓縮低溫低壓的氣體冷媒，吐出為高溫高壓的氣體冷媒的機器。The compressor 1 is a device that compresses a low-temperature and low-pressure gas refrigerant and discharges a high-temperature and high-pressure gas refrigerant by driving a compressor motor 1a (denoted as "CM" in FIG. 2).
室外熱交換器2係在於其傳熱管(未圖示)通流的冷媒、與由室外風扇3被送入的外氣之間進行熱交換的熱交換器。 室外風扇3係藉由室外風扇馬達3a(圖2中記載為「FM」)的驅動，將外氣送入至室外熱交換器2的風扇，被設置在室外熱交換器2的附近。The outdoor heat exchanger 2 is a heat exchanger that exchanges heat between a refrigerant flowing through a heat transfer tube (not shown) and the outside air sent by the outdoor fan 3. The outdoor fan 3 is a fan that sends outdoor air to the outdoor heat exchanger 2 by being driven by the outdoor fan motor 3a (denoted as "FM" in FIG. 2), and is installed near the outdoor heat exchanger 2.
室內熱交換器7係在於其傳熱管(未圖示)通流的冷媒、與由室內風扇8被送入的室內空氣(被空調空間的空氣)之間進行熱交換的熱交換器。 室內風扇8係藉由室內風扇馬達8a的驅動，將室內空氣送入至室內熱交換器7的風扇，被設置在室內熱交換器7的附近。The indoor heat exchanger 7 is a heat exchanger that exchanges heat between a refrigerant flowing through a heat transfer tube (not shown) and indoor air (air in an air-conditioned space) sent by an indoor fan 8. The indoor fan 8 is a fan that sends indoor air to the indoor heat exchanger 7 by being driven by the indoor fan motor 8a, and is installed near the indoor heat exchanger 7.
膨脹閥6係具有將以「冷凝器」(室外熱交換器2及室內熱交換器7的其中一方)進行冷凝後的冷媒進行減壓的功能。在膨脹閥6中被減壓的冷媒係被導引至「蒸發器」(室外熱交換器2及室內熱交換器7的另一方)。其中，在圖1中係顯示在室內機Gi設置膨脹閥6之例，但是亦可在室外機Go設置膨脹閥，此外，亦可在室內機Gi及室外機Go的各個適當設置膨脹閥。The expansion valve 6 has a function of decompressing the refrigerant condensed by the "condenser" (one of the outdoor heat exchanger 2 and the indoor heat exchanger 7). The refrigerant system decompressed in the expansion valve 6 is guided to the "evaporator" (the other of the outdoor heat exchanger 2 and the indoor heat exchanger 7). Although FIG. 1 shows an example in which the expansion valve 6 is installed in the indoor unit Gi, the expansion valve may be installed in the outdoor unit Go, and the expansion valve may be appropriately installed in each of the indoor unit Gi and the outdoor unit Go.
四通閥4係按照空氣調和機W的運轉模式，切換冷媒流路的閥。例如，在冷氣設備運轉時(參照虛線箭號)，在壓縮機1、室外熱交換器2(冷凝器)、膨脹閥6、及室內熱交換器7(蒸發器)透過四通閥4而以環狀依序相連接而成的冷媒電路Q中，冷媒以冷凍循環作循環。The four-way valve 4 is a valve that switches the refrigerant flow path in accordance with the operation mode of the air conditioner W. For example, when the air-conditioning equipment is operating (see the dotted arrow), the compressor 1, the outdoor heat exchanger 2 (condenser), the expansion valve 6, and the indoor heat exchanger 7 (evaporator) pass through the four-way valve 4, In the refrigerant circuit Q in which the loops are sequentially connected, the refrigerant circulates in a refrigeration cycle.
此外，在暖氣設備運轉時(參照實線箭號)，在壓縮機1、室內熱交換器7(冷凝器)、膨脹閥6、及室外熱交換器2(蒸發器)透過四通閥4而以環狀依序相連接而成的冷媒電路Q中，冷媒以冷凍循環作循環。In addition, when the heating device is operating (see the solid arrow), the compressor 1, the indoor heat exchanger 7 (condenser), the expansion valve 6, and the outdoor heat exchanger 2 (evaporator) pass through the four-way valve 4. In the refrigerant circuit Q, which is connected in a ring shape in order, the refrigerant circulates in a refrigeration cycle.
亦即，在依序透過壓縮機1、「冷凝器」、膨脹閥6、及「蒸發器」，冷媒以冷凍循環作循環的冷媒電路Q中，前述之「冷凝器」及「蒸發器」的一方為室外熱交換器2，另一方為室內熱交換器7。That is, in the refrigerant circuit Q that sequentially passes through the compressor 1, the "condenser", the expansion valve 6, and the "evaporator", and the refrigerant circulates through the refrigeration cycle, One is an outdoor heat exchanger 2, and the other is an indoor heat exchanger 7.
室外控制電路5雖未圖示，構成為包含：CPU(Central Processing Unit，中央處理單元)、ROM(Read Only Memory，唯讀記憶體)、RAM(Random Access Memory，隨機存取記憶體)、各種介面等電子電路。接著，讀出記憶在ROM的程式，在RAM展開，CPU執行各種處理。室外控制電路5係根據由室內控制電路9透過通訊線路(未圖示)所接收到的資料、或各感測器(未圖示)的檢測值等，控制壓縮機馬達1a、室外風扇馬達3a、四通閥4等。Although not shown, the outdoor control circuit 5 includes a CPU (Central Processing Unit), a ROM (Read Only Memory), a RAM (Random Access Memory), and various Interface and other electronic circuits. Then, the program stored in the ROM is read out and expanded in the RAM, and the CPU executes various processes. The outdoor control circuit 5 controls the compressor motor 1a and the outdoor fan motor 3a based on the data received by the indoor control circuit 9 through a communication line (not shown) or the detection value of each sensor (not shown). , Four-way valve 4 and so on.
室內控制電路9雖未圖示，構成為包含：CPU、ROM、RAM、各種介面等電子電路。室內控制電路9係根據由室外控制電路5透過通訊線路(未圖示)所接收到的資料、或各感測器(未圖示)的檢測值、來自遙控器(未圖示)的訊號等，控制膨脹閥6或室內風扇馬達8a。Although not shown, the indoor control circuit 9 includes electronic circuits such as a CPU, ROM, RAM, and various interfaces. The indoor control circuit 9 is based on data received by the outdoor control circuit 5 through a communication line (not shown), or the detection value of each sensor (not shown), a signal from a remote control (not shown), etc. To control the expansion valve 6 or the indoor fan motor 8a.
＜室外控制電路的構成＞ 圖2係空氣調和機W的室外機Go所具備的室外控制電路5的構成圖。 如圖2所示，室外控制電路5係具備有：雜訊濾波器5a、交直流轉換器5b、及減振電容器5c、5d。此外，室外控制電路5係前述構成之外，具備有：壓縮機用變流器電路5e、風扇用變流器電路5f、及共模線圈5g(雜訊減低元件)。此外，室外控制電路5係具備有：電流感測器5h、分路電阻器5i、過電流檢測電路5j、5k、瞬時電流檢測電路5r、MCU(Micro Controller Unit，微控制器單元)5s、及驅動機IC(Integrated Circuit，積體電路)5t、5u。<Configuration of Outdoor Control Circuit> FIG. 2 is a configuration diagram of an outdoor control circuit 5 included in the outdoor unit Go of the air conditioner W. As shown in FIG. 2, the outdoor control circuit 5 includes a noise filter 5 a, an AC / DC converter 5 b, and vibration-damping capacitors 5 c and 5 d. In addition, the outdoor control circuit 5 includes a compressor converter circuit 5e, a fan converter circuit 5f, and a common mode coil 5g (noise reduction element) in addition to the aforementioned configuration. In addition, the outdoor control circuit 5 includes: a current sensor 5h, a shunt resistor 5i, an overcurrent detection circuit 5j, 5k, an instantaneous current detection circuit 5r, an MCU (Micro Controller Unit) 5s, and Driver IC (Integrated Circuit) 5t, 5u.
圖2所示之雜訊濾波器5a係使由三相的交流電源E所被施加的交流電壓的雜訊衰減的濾波器電路。 交直流轉換器5b係將透過雜訊濾波器5a而被施加於自身的交流電壓轉換成直流電壓的電路。交直流轉換器5b的輸入側(交流側)係連接於雜訊濾波器5a。交直流轉換器5b的輸出側(直流側)係透過配線p、q而連接於壓縮機用變流器電路5e，此外，透過配線p、q的一部分及配線m、n而亦連接於風扇用變流器電路5f。The noise filter 5a shown in FIG. 2 is a filter circuit that attenuates noise of an AC voltage applied by a three-phase AC power source E. The AC / DC converter 5b is a circuit that converts an AC voltage applied to itself through the noise filter 5a into a DC voltage. The input side (AC side) of the AC-DC converter 5b is connected to the noise filter 5a. The output side (DC side) of the AC-DC converter 5b is connected to the compressor converter circuit 5e through wirings p and q, and is also connected to the fan through a part of wirings p and q and wirings m and n. Converter circuit 5f.
如圖2所示，交直流轉換器5b係具備有：整流電路51b、及平滑電容器52b。 整流電路51b係三對二極體(未圖示)連接成橋形之周知的二極體橋接電路。 平滑電容器52b係用以將由整流電路51b所被施加的電壓(進行脈動的直流電壓)平滑化的電解電容器。平滑電容器52b的正極係連接於配線p，負極係連接於配線q。As shown in FIG. 2, the AC-DC converter 5 b includes a rectifier circuit 51 b and a smoothing capacitor 52 b. The rectifier circuit 51b is a well-known diode bridge circuit in which three pairs of diodes (not shown) are connected in a bridge shape. (2) The smoothing capacitor 52b is an electrolytic capacitor for smoothing the voltage (pulsating DC voltage) applied by the rectifying circuit 51b. The positive electrode of the smoothing capacitor 52b is connected to the wiring p, and the negative electrode is connected to the wiring q.
減振電容器5c係抑制伴隨壓縮機用變流器電路5e之切換的突波電壓的電容器，被設在壓縮機用變流器電路5e的輸入側(直流側)。The damping capacitor 5c is a capacitor that suppresses a surge voltage accompanying switching of the compressor converter circuit 5e, and is provided on the input side (DC side) of the compressor converter circuit 5e.
壓縮機用變流器電路5e係將由交直流轉換器5b所被施加的直流電壓轉換成預定的交流電壓，且藉由該交流電壓來驅動壓縮機馬達1a的電路。亦即，壓縮機用變流器電路5e係其輸入側透過配線p、q而連接於交直流轉換器5b，且輸出側連接於壓縮機馬達1a。The compressor converter circuit 5e is a circuit that converts a DC voltage applied by the AC-DC converter 5b into a predetermined AC voltage and drives the compressor motor 1a by the AC voltage. That is, the compressor converter circuit 5e has an input side connected to the AC / DC converter 5b through wirings p and q and an output side connected to the compressor motor 1a.
如圖2所示，壓縮機用變流器電路5e係形成為上臂的切換元件Su、與下臂的切換元件Sd作串聯連接而成的第1接腳／第2接腳／第3接腳彼此作並聯連接的構成。前述之第1接腳的中間端子、第2接腳的中間端子、及第3接腳的中間端子係分別連接於壓縮機馬達1a的繞組(未圖示)。此外，在各切換元件Su、Sd係分別反向並聯連接有續流二極體D。 其中，壓縮機用變流器電路5e係相當於用以驅動壓縮機1的額定電流(例如20[A])為預定值(例如10[A])以上的「大電流用變流器電路」。As shown in FIG. 2, the compressor converter circuit 5e is a first pin, a second pin, and a third pin formed as a switching element Su of an upper arm and a switching element Sd of a lower arm connected in series. They are connected to each other in parallel. The intermediate terminal of the first pin, the intermediate terminal of the second pin, and the intermediate terminal of the third pin are respectively connected to a winding (not shown) of the compressor motor 1a. A freewheeling diode D is connected to each of the switching elements Su and Sd in anti-parallel. The compressor converter circuit 5e is equivalent to a "high-current converter circuit" whose rated current (for example, 20 [A]) to drive the compressor 1 is a predetermined value (for example, 10 [A]) or more. .
風扇用變流器電路5f係將由交直流轉換器5b所被施加的直流電壓轉換成預定的交流電壓，且藉由該交流電壓來驅動室外風扇馬達3a的電路。亦即，風扇用變流器電路5f係其輸入側透過配線m、n等而連接於交直流轉換器5b，輸出側連接於室外風扇馬達3a。風扇用變流器電路5f係成為與壓縮機用變流器電路5e相同的構成。 其中，風扇用變流器電路5f係相當於用以驅動室外風扇3的額定電流(例如0.5[A])為未達預定值(例如10[A])的「小電流用變流器電路」。The fan converter circuit 5f is a circuit that converts a DC voltage applied by the AC-DC converter 5b into a predetermined AC voltage and drives the outdoor fan motor 3a by the AC voltage. That is, the fan converter circuit 5f has an input side connected to the AC / DC converter 5b through wirings m, n, and the like, and an output side connected to the outdoor fan motor 3a. The fan converter circuit 5f has the same configuration as the compressor converter circuit 5e. Among them, the fan converter circuit 5f is equivalent to a "small current converter circuit" whose rated current (for example, 0.5 [A]) for driving the outdoor fan 3 is less than a predetermined value (for example, 10 [A]). .
此外，在連接於壓縮機用變流器電路5e或風扇用變流器電路5f之輸入側的「配線」係包含有「第1配線」及「第2配線」。前述「第1配線」係將交直流轉換器5b與壓縮機用變流器電路5e相連接的配線p、q。 此外，前述「第2配線」係其一端連接於「第1配線」，另一端連接於風扇用變流器電路5f的配線m、n。若更加詳細說明之，正側的配線m係其一端連接於配線p(平滑電容器52b與減振電容器5c之間)，另一端連接於風扇用變流器電路5f。此外，負側的配線n係其一端連接於配線q(平滑電容器52b與減振電容器5c之間)，另一端連接於風扇用變流器電路5f。The “wiring” connected to the input side of the compressor converter circuit 5e or the fan converter circuit 5f includes “first wiring” and “second wiring”. The "first wiring" is wirings p and q that connect the AC-DC converter 5b and the compressor converter circuit 5e. In addition, the "second wiring" refers to wirings m and n whose one end is connected to the "first wiring" and the other end is connected to the fan converter circuit 5f. To explain in more detail, one end of the wiring m is connected to the wiring p (between the smoothing capacitor 52b and the damping capacitor 5c), and the other end is connected to the fan converter circuit 5f. In addition, one end of the wiring n on the negative side is connected to the wiring q (between the smoothing capacitor 52b and the damping capacitor 5c), and the other end is connected to the fan converter circuit 5f.
圖2所示之減振電容器5d係抑制伴隨風扇用變流器電路5f之切換的突波電壓的電容器，被設在風扇用變流器電路5f的輸入側(直流側)。The damping capacitor 5d shown in FIG. 2 is a capacitor that suppresses a surge voltage accompanying switching of the fan converter circuit 5f, and is provided on the input side (DC side) of the fan converter circuit 5f.
共模線圈5g係將電雜訊減低的雜訊濾波器線圈，設在配線m、n。該共模線圈5g係形成為以對呈環狀的鐵心(未圖示)形成為加極性的方式，捲繞配線m、n的一部分的構成。接著，若流通因壓縮機用變流器電路5e的「基準電位」、與風扇用變流器電路5f的「基準電位」的電位差而起的電流時，在共模線圈5g所發生的磁通互相加強而電感增加，使前述之電流衰減。The common mode coil 5g is a noise filter coil for reducing electrical noise, and is provided on the wirings m and n. This common mode coil 5g has a configuration in which a part of the wiring m, n is wound so as to form a polarized core (not shown) in a ring shape. Next, when a current flows due to a potential difference between the "reference potential" of the compressor converter circuit 5e and the "reference potential" of the fan converter circuit 5f, the magnetic flux generated in the common mode coil 5g Reinforcing each other and increasing inductance causes the aforementioned current to decay.
其中，壓縮機用變流器電路5e的「基準電位」係指構成壓縮機用變流器電路5e的下臂的切換元件Sd的射極側的電位。在圖1所示之例中，壓縮機用變流器電路5e的切換元件Sd的射極側係予以接地。此外，風扇用變流器電路5f的「基準電位」係指構成風扇用變流器電路5f的下臂的切換元件Sd的射極側的電位。Here, the "reference potential" of the compressor converter circuit 5e refers to the potential on the emitter side of the switching element Sd constituting the lower arm of the compressor converter circuit 5e. In the example shown in FIG. 1, the emitter side of the switching element Sd of the compressor converter circuit 5e is grounded. The "reference potential" of the fan converter circuit 5f refers to the potential on the emitter side of the switching element Sd constituting the lower arm of the fan converter circuit 5f.
電流感測器5h係檢測流至壓縮機用變流器電路5e的電流的感測器，在配線q中，被設在減振電容器5c與壓縮機用變流器電路5e之間。 分路電阻器5i係檢測流至風扇用變流器電路5f的電流的感測器，在配線n中，被設在減振電容器5d與風扇用變流器電路5f之間。The current sensor 5h is a sensor that detects a current flowing to the compressor converter circuit 5e, and is provided between the damping capacitor 5c and the compressor converter circuit 5e in the wiring q. The shunt resistor 5i is a sensor that detects a current flowing to the fan converter circuit 5f, and is provided between the damping capacitor 5d and the fan converter circuit 5f in the wiring n.
過電流檢測電路5j係根據電流感測器5h的檢測值，判定(檢測)在壓縮機用變流器電路5e是否流通過電流的電路。 其他過電流檢測電路5k係根據分路電阻器5i之兩端的電位差，判定(檢測)在風扇用變流器電路5f是否流通過電流的電路。The overcurrent detection circuit 5j is a circuit that determines (detects) whether a current flows through the compressor converter circuit 5e based on the detection value of the current sensor 5h. The other overcurrent detection circuit 5k is a circuit that determines (detects) whether a current flows through the fan converter circuit 5f based on the potential difference between both ends of the shunt resistor 5i.
瞬時電流檢測電路5r係根據分路電阻器5i的兩端的電位差，檢測流至風扇用變流器電路5f的電流的瞬時值的電路。 MCU5s係根據電流感測器5h或瞬時電流檢測電路5r的檢測值等，藉由PWM控制(Pulse Width Modulation，脈衝寬度調變)，對驅動機IC5t、5u輸出預定的控制訊號。The instantaneous current detection circuit 5r is a circuit that detects the instantaneous value of the current flowing to the fan converter circuit 5f based on the potential difference between both ends of the shunt resistor 5i. MCU5s outputs predetermined control signals to the driver ICs 5t and 5u through PWM control (Pulse Width Modulation) based on the detection value of the current sensor 5h or the instantaneous current detection circuit 5r.
驅動機IC5t係根據由MCU5s被輸入的控制訊號，切換壓縮機用變流器電路5e的各切換元件Su、Sd的ON/OFF。 其他驅動機IC5u係根據由MCU5s被輸入的控制訊號，切換風扇用變流器電路5f的各切換元件Su、Sd的ON/OFF。The driver IC 5t switches ON / OFF of each switching element Su, Sd of the compressor converter circuit 5e based on a control signal input from the MCU 5s. The other driver IC5u switches ON / OFF of each switching element Su, Sd of the fan converter circuit 5f according to a control signal input from the MCU 5s.
圖3係構裝空氣調和機W的室外控制電路5的控制基板B的說明圖。 其中，在圖3中係省略圖2所示之電流感測器5h、分路電阻器5i、過電流檢測電路5j、5k、瞬時電流檢測電路5r、及驅動機IC5t、5u的圖示。 圖3所示之控制基板B係構裝構成室外控制電路5的各電子零件的印刷基板。其中，圖3所示之配線p、q、m、n等係形成為控制基板B的配線圖案。FIG. 3 is an explanatory diagram of the control board B of the outdoor control circuit 5 in which the air conditioner W is mounted. (3) The illustration of the current sensor 5h, the shunt resistor 5i, the overcurrent detection circuits 5j, 5k, the instantaneous current detection circuit 5r, and the driver ICs 5t, 5u shown in FIG. 2 is omitted in FIG.控制 The control board B shown in FIG. 3 is a printed board on which each electronic component constituting the outdoor control circuit 5 is mounted. Among them, the wirings p, q, m, n, etc. shown in FIG. 3 are formed as wiring patterns of the control substrate B.
如圖3所示，雜訊濾波器5a、交直流轉換器5b、減振電容器5c、5d、共模線圈5g、壓縮機用變流器電路5e、風扇用變流器電路5f、或MCU5s等電子零件被構裝在一塊控制基板B。若更加詳細說明之，在控制基板B的中央附近設置共模線圈5g，且以包圍該共模線圈5g的方式配置有其他電子零件。藉此，可縮短形成在控制基板B的配線圖案(配線m、n等)的長度。因此，可減低配線圖案的阻抗，進而抑制伴隨壓縮機用變流器電路5e等之切換動作的電雜訊。此外，藉由將各電路構裝在一塊控制基板B，可達成控制基板B的小型化／低成本化。As shown in FIG. 3, a noise filter 5a, an AC / DC converter 5b, a damping capacitor 5c, 5d, a common mode coil 5g, a compressor converter circuit 5e, a fan converter circuit 5f, or an MCU5s The electronic components are mounted on a control substrate B. To explain in more detail, a common mode coil 5g is provided near the center of the control substrate B, and other electronic components are arranged so as to surround the common mode coil 5g. Thereby, the length of the wiring pattern (wiring m, n, etc.) formed in the control board B can be shortened. Therefore, the impedance of the wiring pattern can be reduced, and further, electrical noise accompanying switching operation of the compressor converter circuit 5e and the like can be suppressed. In addition, by constructing each circuit on one control substrate B, it is possible to reduce the size and cost of the control substrate B.
＜作用/效果＞ 若壓縮機1被驅動(參照圖1)，在壓縮機用變流器電路5e係流通相對較大的(例如20[A]的)電流。此外，若室外風扇馬達3a進行驅動，在風扇用變流器電路5f係流通相對較小的(例如0.5[A]的)電流。在此，配線p、q、m、n等的配線圖案係具有預定的阻抗，因此如前所述，在壓縮機用變流器電路5e的基準電位、與風扇用變流器電路5f的基準電位之間產生電位差。該電位差係伴隨壓縮機用變流器電路5e等的切換動作而經時性變動，發生電雜訊。尤其，有電雜訊對流通小電流的風扇用變流器電路5f的不良影響之虞。<Action / Effect> (1) When the compressor 1 is driven (see FIG. 1), a relatively large (for example, 20 [A]) current flows through the compressor converter circuit 5e. When the outdoor fan motor 3a is driven, a relatively small (for example, 0.5 [A]) current flows through the fan converter circuit 5f. Here, since the wiring patterns such as wiring p, q, m, and n have predetermined impedances, as described above, the reference potential of the compressor converter circuit 5e and the reference of the fan converter circuit 5f A potential difference occurs between the potentials. This potential difference changes with time with the switching operation of the compressor converter circuit 5e and the like, and electrical noise occurs. In particular, there is a possibility that the electric noise adversely affects the inverter circuit 5f for a fan in which a small current flows.
因此，在本實施形態中，在風扇用變流器電路5f側的配線m、n設置共模線圈5g，藉此減低前述基準電位之間的電位差，抑制電雜訊。藉此，可防止風扇用變流器電路5f等的錯誤動作，且可將空氣調和機W的可靠性比以往更為提高。Therefore, in this embodiment, a common mode coil 5g is provided on the wirings m and n on the fan converter circuit 5f side, thereby reducing the potential difference between the reference potentials and suppressing electrical noise. Thereby, malfunction of the fan converter circuit 5f and the like can be prevented, and the reliability of the air conditioner W can be improved more than ever.
此外，共模線圈5g係與作為其他種類的雜訊減低元件的鐵磁體鐵心不同，被直接構裝在控制基板B。亦即，由於不需要在控制基板B的外部透過配線連接共模線圈5g，因此因未設置外部配線的部分而可刪減製造成本。此外，亦可達成收容控制基板B的電子零件箱(未圖示)的小型化。In addition, the common mode coil 5g is directly mounted on the control substrate B, unlike a ferromagnetic core as another type of noise reduction element. That is, since it is not necessary to connect the common mode coil 5g through the wiring outside the control substrate B, the manufacturing cost can be reduced because the external wiring is not provided. In addition, miniaturization of an electronic component box (not shown) that houses the control board B can also be achieved.
此外，在本實施形態中，壓縮機用變流器電路5e及風扇用變流器電路5f被構裝在同一控制基板B。假設將各變流器電路構裝在個別的控制基板，產生設置將各控制基板的電子零件作電性連接的線束(harness)(未圖示)的必要，但是在本實施形態中，並不需要設置前述之線束。藉此，可刪減室外機Go的製造成本，此外，達成收容控制基板B的電子零件箱(未圖示)的小型化。In this embodiment, the compressor converter circuit 5e and the fan converter circuit 5f are mounted on the same control board B. It is assumed that each converter circuit is configured on a separate control substrate, and it is necessary to provide a harness (not shown) for electrically connecting the electronic components of each control substrate, but in this embodiment, it is not necessary Need to set the aforementioned harness. As a result, the manufacturing cost of the outdoor unit Go can be reduced, and the size of an electronic component box (not shown) that houses the control board B can be reduced.
此外，壓縮機用變流器電路5e及風扇用變流器電路5f藉由一個MCU5s予以控制。因此，與設置複數MCU的構成相比，可達成空氣調和機W的低成本化。The compressor converter circuit 5e and the fan converter circuit 5f are controlled by one MCU 5s. Therefore, it is possible to reduce the cost of the air conditioner W compared to a configuration in which a plurality of MCUs are provided.
≪第2實施形態≫ 第2實施形態係空氣調和機W具備2個室外風扇(未圖示)，與2個室外風扇以一對一對應，設置2個風扇用變流器電路51f、52f(參照圖4)，此點與第1實施形態不同。其中，關於其他，係與第1實施形態相同。因此，說明與第1實施形態不同的部分，關於重複的部分，則省略說明。≪Second Embodiment≫ The air conditioner W of the second embodiment is provided with two outdoor fans (not shown), and one-to-one correspondence with the two outdoor fans. Two fan inverter circuits 51f and 52f are provided ( Refer to FIG. 4), which is different from the first embodiment. The others are the same as those in the first embodiment. Therefore, portions different from those of the first embodiment will be described, and descriptions of overlapping portions will be omitted.
圖4係構裝空氣調和機的室外控制電路5A的控制基板BA的說明圖。 其中，在圖4中係省略第1實施形態中所說明的電流感測器5h(參照圖2)、分路電阻器5i、過電流檢測電路5j、5k、瞬時電流檢測電路5r、及驅動機IC5t、5u等的圖示。 空氣調和機之室外機(未圖示)係如前所述，具備有2個室外風扇(未圖示)。一方室外風扇的驅動源亦即室外風扇馬達31a係連接於風扇用變流器電路51f(小電流用變流器電路)。另一方室外風扇的驅動源亦即室外風扇馬達32a係連接於其他風扇用變流器電路52f(小電流用變流器電路)。FIG. 4 is an explanatory diagram of a control board BA of an outdoor control circuit 5A in which an air conditioner is installed. In FIG. 4, the current sensor 5h (see FIG. 2), the shunt resistor 5i, the overcurrent detection circuits 5j, 5k, the instantaneous current detection circuit 5r, and the driver described in the first embodiment are omitted. IC5t, 5u, etc.室外 The outdoor unit (not shown) of the air conditioner is provided with two outdoor fans (not shown) as described above. The outdoor fan motor 31a, which is a drive source of one outdoor fan, is connected to the fan converter circuit 51f (inverter circuit for small current). The outdoor fan motor 32a, which is the driving source of the other outdoor fan, is connected to the other inverter circuit 52f (inverter circuit for small current).
接著，壓縮機用變流器電路5e、共模線圈5g、MCU5s等之外，與2個室外風扇以一對一對應的2個風扇用變流器電路51f、52f被構裝在一塊控制基板BA。Next, in addition to the compressor converter circuit 5e, the common mode coil 5g, MCU5s, etc., two fan converter circuits 51f and 52f corresponding to the two outdoor fans are mounted on a control board on a one-to-one basis. BA.
此外，對應2個風扇用變流器電路51f、52f，配線m、n(第2配線)分別分歧成2個。若更加詳細說明之，正側的配線m係一端連接於配線p，在另一端側分歧成2個，其另一端連接於風扇用變流器電路51f、52f。同樣地，負側的配線n係一端連接於配線q，在另一端側分歧成2個，其另一端連接於風扇用變流器電路51f、52f。在該等配線m、n中，在比該分歧點m1、n1更接近一端側(配線p、q側)，設有一個共模線圈5g(雜訊減低元件)。藉由該共模線圈5g，尤其可抑制風扇用變流器電路51f、52f的電雜訊。In addition, corresponding to the two fan inverter circuits 51f and 52f, the wirings m and n (second wiring) are branched into two. To explain in more detail, one end of the wiring m is connected to the wiring p, and the other end is divided into two, and the other end is connected to the fan converter circuits 51f and 52f. Similarly, one end of the wiring n on the negative side is connected to the wiring q, and the other end is divided into two, and the other end is connected to the fan converter circuits 51f and 52f. Among these wirings m and n, one common mode coil 5g (noise reduction element) is provided closer to one end side (wiring p, q side) than the branch points m1 and n1. With this common mode coil 5g, the electrical noise of the fan converter circuits 51f and 52f can be particularly suppressed.
＜效果＞ 藉由第2實施形態，在控制基板BA構裝2個風扇用變流器電路51f、52f的構成中，亦可藉由1個共模線圈5g來適當抑制電雜訊。<Effects> According to the second embodiment, in a configuration in which two fan converter circuits 51f and 52f are mounted on the control board BA, electrical noise can be appropriately suppressed by a single common mode coil 5g.
此外，與對應2個風扇用變流器電路51f、52f，各一個地設置共模線圈(亦即設置2個共模線圈)的構成相比，可達成空氣調和機的低成本化。此外，亦可達成收容控制基板BA的電子零件箱(未圖示)的小型化。In addition, the cost of the air conditioner can be reduced compared to a configuration in which two common-mode coils (that is, two common-mode coils) are provided for each of the two fan inverter circuits 51f and 52f. In addition, it is possible to reduce the size of an electronic component box (not shown) that houses the control board BA.
≪變形例≫ 以上，關於本發明之空氣調和機W等，在實施形態中進行說明，惟本發明並非為限定於該等記載者，可進行各種變更。 例如，在各實施形態中，係說明使用共模線圈5g作為減低電雜訊的「雜訊減低元件」的構成，但是不限於此。亦即，亦可使用鐵磁體鐵心(雜訊減低元件：未圖示)來取代共模線圈5g。此時，將配線m、n的一部分拉繞到控制基板B的外側，且在控制基板B的外側，在配線m、n設置鐵磁體鐵心即可。在如上所示之構成中，亦可抑制風扇用變流器電路5f等的電雜訊。≪Modifications Above, the air conditioner W and the like of the present invention are described in the embodiments, but the present invention is not limited to those described, and various changes can be made. For example, in each embodiment, the configuration using 5 g of the common mode coil as a “noise reduction element” for reducing electrical noise is described, but it is not limited to this. That is, instead of the common mode coil 5g, a ferromagnetic core (noise reduction element: not shown) may be used. At this time, a part of the wirings m and n is wound to the outside of the control substrate B, and a ferromagnetic core may be provided on the wirings m and n outside the control substrate B. With the configuration described above, electrical noise such as the fan converter circuit 5f can also be suppressed.
此外，在第2實施形態中，係說明在2個室外風扇(未圖示)設置以一對一對應的2個風扇用變流器電路51f、52f(參照圖4)的構成，惟不限於此。亦即，室外風扇或風扇用變流器電路的個數亦可為3個以上。換言之，亦可為將與複數室外風扇以一對一對應的複數風扇用變流器電路，連同壓縮機用變流器電路5e等一起構裝在一塊控制基板B的構成。在如上所示之構成中，較佳為對應複數風扇用變流器電路，配線m、n(第2配線)分歧成複數，在配線m、n中，在比各分歧點更接近一端側(配線p、q側)，設置一個共模線圈5g(雜訊減低元件)。藉此，在各個的風扇用變流器電路中，可適當抑制電雜訊之故。In addition, in the second embodiment, a configuration in which two fan inverter circuits 51f and 52f (see FIG. 4) corresponding to one-to-one correspondence with two outdoor fans (not shown) is described, but it is not limited to this. this. That is, the number of outdoor fans or fan inverter circuits may be three or more. In other words, a configuration may be adopted in which a plurality of inverter circuits for a plurality of fans corresponding to a plurality of outdoor fans are provided on one control substrate B together with a compressor circuit 5e and the like. In the configuration shown above, it is preferable to correspond to a plurality of fan inverter circuits, and the wirings m and n (second wiring) are branched into plural numbers, and the wirings m and n are closer to one end side than each branch point ( Wiring p, q side), a common mode coil 5g (noise reduction element) is provided. Accordingly, in each of the fan converter circuits, it is possible to appropriately suppress electrical noise.
此外，在各實施形態中，係說明室內機Gi(參照圖1)及室外機Go(參照圖1)各設置一台的構成，惟不限於此。亦即，亦可設置作並聯連接的複數台室內機，亦可設置作並聯連接的複數台室外機。 此外，在各實施形態中所說明的空氣調和機W係可適用於大樓用多路空氣調節器或設備用套裝空氣調節器、房間空氣調節器等各種種類的空氣調節器。In addition, in each embodiment, the configuration in which one indoor unit Gi (see FIG. 1) and one outdoor unit Go (see FIG. 1) are installed is described, but it is not limited to this. That is, a plurality of indoor units connected in parallel may be provided, and a plurality of outdoor units connected in parallel may also be provided. In addition, the air conditioner W described in each embodiment can be applied to various types of air conditioners, such as a multi-way air conditioner for a building, a package air conditioner for a facility, and a room air conditioner.
此外，各實施形態係詳細記載，俾以易於理解本發明來進行說明者，並不一定限定於具備所說明的全部構成者。此外，關於實施形態的構成的一部分，可進行其他構成的追加／刪除／置換。 此外，前述機構或構成係顯示在說明上被認為是必要者，在製品上未必顯示全部機構或構成。In addition, each embodiment is described in detail, and it is not necessarily limited to those having all the components described, so that the present invention can be easily understood. In addition, a part of the configuration of the embodiment may be added, deleted, or replaced with another configuration. In addition, the aforementioned institutions or structures are shown as necessary in the description, and not all the institutions or structures are necessarily displayed on the product.
1‧‧‧壓縮機1‧‧‧compressor
1a‧‧‧壓縮機馬達1a‧‧‧compressor motor
2‧‧‧室外熱交換器(冷凝器／蒸發器)2‧‧‧ outdoor heat exchanger (condenser / evaporator)
3‧‧‧室外風扇3‧‧‧outdoor fan
3a‧‧‧室外風扇馬達3a‧‧‧outdoor fan motor
4‧‧‧四通閥4‧‧‧ four-way valve
5、5A‧‧‧室外控制電路5, 5A‧‧‧ outdoor control circuit
5a‧‧‧雜訊濾波器5a‧‧‧Noise Filter
5b‧‧‧交直流轉換器5b‧‧‧AC-DC converter
5c、5d‧‧‧減振電容器5c, 5d‧‧‧ damping capacitor
5e‧‧‧壓縮機用變流器電路(大電流用變流器電路)5e‧‧‧Compressor converter circuit (high current converter circuit)
5f、51f、52f‧‧‧風扇用變流器電路(小電流用變流器電路)5f, 51f, 52f ‧‧‧ Fan converter circuit (inverter circuit for small current)
5g‧‧‧共模線圈(雜訊減低元件)5g‧‧‧common mode coil (noise reduction component)
5h‧‧‧電流感測器5h‧‧‧Current sensor
5i‧‧‧分路電阻器5i‧‧‧ shunt resistor
5j、5k‧‧‧過電流檢測電路5j, 5k‧‧‧ overcurrent detection circuit
5r‧‧‧瞬時電流檢測電路5r‧‧‧Transient Current Detection Circuit
5s‧‧‧MCU(Micro Controller Unit)5s‧‧‧MCU (Micro Controller Unit)
5t、5u‧‧‧驅動機IC5t, 5u‧‧‧ driver IC
6‧‧‧膨脹閥6‧‧‧Expansion valve
7‧‧‧室內熱交換器(蒸發器／冷凝器)7‧‧‧ indoor heat exchanger (evaporator / condenser)
8‧‧‧室內風扇8‧‧‧ indoor fan
8a‧‧‧室內風扇馬達8a‧‧‧Indoor fan motor
9‧‧‧室內控制電路9‧‧‧ indoor control circuit
31a、32a‧‧‧室外風扇馬達31a, 32a‧‧‧ outdoor fan motor
51b‧‧‧整流電路51b‧‧‧ rectifier circuit
52b‧‧‧平滑電容器52b‧‧‧Smoothing capacitor
B、BA‧‧‧控制基板B 、 BA‧‧‧Control Board
D‧‧‧續流二極體D‧‧‧ freewheeling diode
E‧‧‧三相的交流電源E‧‧‧Three-phase AC power
Go‧‧‧室外機Go‧‧‧Outdoor Unit
Gi‧‧‧室內機Gi‧‧‧ indoor unit
Q‧‧‧冷媒電路Q‧‧‧Refrigerant circuit
W‧‧‧空氣調和機W‧‧‧air conditioner
p、q‧‧‧配線(第1配線)p, q‧‧‧ wiring (first wiring)
m、n‧‧‧配線(第2配線)m, n‧‧‧ wiring (second wiring)
m1、n1‧‧‧分歧點m1, n1‧‧‧ divergence
Sd‧‧‧下臂的切換元件Sd‧‧‧Lower arm switching element
Su‧‧‧上臂的切換元件Su‧‧‧ Upper arm switching element
圖1係本發明之第1實施形態之空氣調和機所具備的冷媒電路的說明圖。 圖2係本發明之第1實施形態之空氣調和機所具備的室外控制電路的構成圖。 圖3係構裝在本發明之第1實施形態之空氣調和機之室外機的控制基板的電路零件的說明圖。 圖4係構裝在本發明之第2實施形態之空氣調和機之室外機的控制基板的電路零件的說明圖。FIG. 1 is an explanatory diagram of a refrigerant circuit included in an air conditioner according to a first embodiment of the present invention. FIG. 2 is a configuration diagram of an outdoor control circuit provided in the air conditioner according to the first embodiment of the present invention. FIG. 3 is an explanatory diagram of circuit components of a control board of an outdoor unit of the air conditioner according to the first embodiment of the present invention. FIG. 4 is an explanatory diagram of circuit components of a control board of an outdoor unit of an air conditioner according to a second embodiment of the present invention.
Claims (5)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2017-128549 | 2017-06-30 | ||
| JP2017128549A JP6785727B2 (en) | 2017-06-30 | 2017-06-30 | Outdoor unit of air conditioner and air conditioner |
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| Publication Number | Publication Date |
|---|---|
| TW201905389A TW201905389A (en) | 2019-02-01 |
| TWI679382B true TWI679382B (en) | 2019-12-11 |
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| TW107122236A TWI679382B (en) | 2017-06-30 | 2018-06-28 | Outdoor unit of air conditioner, and air conditioner |
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| JP (1) | JP6785727B2 (en) |
| TW (1) | TWI679382B (en) |
| WO (1) | WO2019003834A1 (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11486600B2 (en) * | 2018-03-26 | 2022-11-01 | Mitsubishi Electric Corporation | Air conditioner |
| CN110056983B (en) * | 2019-04-30 | 2021-04-09 | 邯郸美的制冷设备有限公司 | Air conditioning system, control method of air conditioning system, and storage medium |
| JP7501322B2 (en) | 2020-11-25 | 2024-06-18 | 株式会社富士通ゼネラル | Electronics |
| WO2024053006A1 (en) * | 2022-09-07 | 2024-03-14 | 三菱電機株式会社 | Outdoor unit for air conditioner |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0835713A (en) * | 1994-07-26 | 1996-02-06 | Fujitsu General Ltd | Method and apparatus for controlling air conditioner |
| JP2012124985A (en) * | 2010-12-06 | 2012-06-28 | Daikin Ind Ltd | Refrigeration apparatus |
| JP2016038180A (en) * | 2014-08-08 | 2016-03-22 | 日立アプライアンス株式会社 | Outdoor unit and air conditioner |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6059978A (en) * | 1983-09-12 | 1985-04-06 | Toshiba Corp | Air conditioner |
| JP2000050639A (en) * | 1998-07-23 | 2000-02-18 | Toshiba Corp | Inverter device, and air conditioning machine using the same |
-
2017
- 2017-06-30 JP JP2017128549A patent/JP6785727B2/en active Active
-
2018
- 2018-06-06 WO PCT/JP2018/021659 patent/WO2019003834A1/en active Application Filing
- 2018-06-28 TW TW107122236A patent/TWI679382B/en active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0835713A (en) * | 1994-07-26 | 1996-02-06 | Fujitsu General Ltd | Method and apparatus for controlling air conditioner |
| JP2012124985A (en) * | 2010-12-06 | 2012-06-28 | Daikin Ind Ltd | Refrigeration apparatus |
| JP2016038180A (en) * | 2014-08-08 | 2016-03-22 | 日立アプライアンス株式会社 | Outdoor unit and air conditioner |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2019003834A1 (en) | 2019-01-03 |
| JP6785727B2 (en) | 2020-11-18 |
| TW201905389A (en) | 2019-02-01 |
| JP2019011904A (en) | 2019-01-24 |
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