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日立（Hitachi） LYA220A中央空調(diào)

日立（Hitachi） LYA220A螺桿壓縮機(jī)

日立（Hitachi） LYA220A ras/c-72nvy 變頻 3p

日立(hitachi) lya220a渦旋式壓縮機(jī)的詳細(xì)參數(shù)說(shuō)明詳解

日立（Hitachi） LYA220A 渦旋式壓縮機(jī)的詳細(xì)參數(shù)說(shuō)明

日立(hitachi) lya220a 渦旋式壓縮機(jī)的詳細(xì)參數(shù)說(shuō)明手冊(cè)

這是日立（Hitachi） LYA220A 渦旋式壓縮機(jī)的詳細(xì)參數(shù)說(shuō)明。

該型號(hào)是日立SET-FREE系列變頻多聯(lián)機(jī)（VRF系統(tǒng)）中常用的一款壓縮機(jī)，廣泛應(yīng)用于中央空調(diào)系統(tǒng)。

日立 LYA220A 渦旋壓縮機(jī)核心參數(shù)總覽

關(guān)鍵特性與應(yīng)用說(shuō)明

1. 渦旋式壓縮原理：

• 通過(guò)兩個(gè)相互嚙合的渦旋盤(pán)（一個(gè)固定，一個(gè)繞行）形成連續(xù)變化的壓縮腔，將冷媒氣體從低壓區(qū)推向高壓區(qū)。

• 優(yōu)點(diǎn)：相比往復(fù)式壓縮機(jī)，效率更高、運(yùn)行更平穩(wěn)、噪音振動(dòng)更小、可靠性更佳。

2. 變頻技術(shù) (Inverter)：

• 節(jié)能：避免了頻繁啟停的巨大電流消耗，在部分負(fù)荷下能效比（COP）非常高。

• 舒適：室溫控制更，波動(dòng)小，無(wú)啟停溫差感。

• 快速制冷/熱：?jiǎn)?dòng)后可以高頻運(yùn)行，迅速達(dá)到設(shè)定溫度。

• 這是該壓縮機(jī)的核心。它不像定頻壓縮機(jī)那樣簡(jiǎn)單地“開(kāi)/關(guān)”，而是通過(guò)改變電機(jī)運(yùn)行頻率來(lái)無(wú)極調(diào)節(jié)其轉(zhuǎn)速。

• 好處：

3. 冷媒 R410A：

• 這是一種混合制冷劑，工作壓力比傳統(tǒng)的R22高約1.6倍。

• 對(duì)系統(tǒng)和維修的要求：使用能承受高壓的管路組件（銅管、閥門(mén)等）和工具。抽真空、保壓、充注等操作要求非常嚴(yán)格，需要專(zhuān)業(yè)的售后人員操作。

4. 內(nèi)置保護(hù)：

• 壓縮機(jī)內(nèi)部通常集成了過(guò)熱保護(hù)器，當(dāng)壓縮機(jī)溫度異常升高時(shí)會(huì)自動(dòng)切斷電路，防止電機(jī)燒毀，是重要的裝置。

重要注意事項(xiàng)（維修與更換）

• 非備件，需專(zhuān)業(yè)更換：壓縮機(jī)是空調(diào)系統(tǒng)的“心臟”，其更換是一項(xiàng)復(fù)雜的系統(tǒng)工程，由持有專(zhuān)業(yè)資質(zhì)的技術(shù)人員操作。

• 系統(tǒng)匹配性：更換壓縮機(jī)時(shí)，確保新壓縮機(jī)與室外機(jī)的控制系統(tǒng)、換熱器、節(jié)流裝置等完全匹配。直接替換不同型號(hào)可能導(dǎo)致系統(tǒng)工作異常甚至損壞。

• 潤(rùn)滑油管理：更換壓縮機(jī)時(shí)，嚴(yán)格處理潤(rùn)滑油（POE油）。POE油具有的吸濕性，暴露在空氣中會(huì)迅速吸收水分，導(dǎo)致系統(tǒng)冰堵和酸性物質(zhì)產(chǎn)生。需要嚴(yán)格按照規(guī)范操作，并補(bǔ)充或更換規(guī)定型號(hào)和數(shù)量的潤(rùn)滑油。

• 系統(tǒng)清潔度：壓縮機(jī)燒毀后，會(huì)產(chǎn)生大量的酸性物質(zhì)和金屬碎屑，污染整個(gè)系統(tǒng)。更換新壓縮機(jī)前，對(duì)系統(tǒng)管路進(jìn)行的清洗和氮?dú)獯祾?/span>，否則新壓縮機(jī)很快會(huì)再次損壞。

• 抽真空和檢漏：由于使用R410A高壓冷媒，系統(tǒng)對(duì)真空度和密封性要求。使用高精度真空泵和電子檢漏儀進(jìn)行操作。

總結(jié)：日立LYA220A是一款應(yīng)用于5-6匹多聯(lián)機(jī)的單相變頻渦旋壓縮機(jī)，以其、可靠和靜音的特點(diǎn)著稱(chēng)。其維修和更換是一項(xiàng)專(zhuān)業(yè)技術(shù)工作，切忌自行操作。

ECMBP3DA014BE531  10

KPP 600-20-3X20
RJF-4A-M5
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3 Phase
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This is a detailed parameter description of the Hitachi LYA220A scroll compressor.

This model is a commonly used high-efficiency compressor in Hitachi SET-FREE series variable frequency multi split (VRF system), widely used in central air conditioning systems.

Overview of Core Parameters of Hitachi LYA220A Vortex Compressor

Detailed description of parameter categories

Product model LYA220A

Manufacturer Hitachi

Compressor type: Fully enclosed scroll compressor

Refrigerant type R410A

Rated voltage/phase/frequency 220-240V/single-phase/50Hz (note: this is the voltage of the compressor motor itself, and the entire outdoor unit power supply may be 380V)

Displacement is approximately 22.0 cc/rev or 24.0 cc/rev (please refer to the official manual for details, commonly found in this range)

Rated cooling capacity of approximately 5.5-6.0 kW (capacity varies with frequency, this is a reference value)

Rated power (Input) is approximately 1.8-2.2 kW (power varies with frequency, this is a reference value)

Rated current: approximately 9.0-11.0 A (under rated operating conditions)

Lubricating oil type/oil injection amount: POE Oil/approximately 1.0-1.2 liters (subject to the label on the machine)

Operating frequency range: wide frequency conversion operation (e.g. 15-120 Hz), achieving soft start and stepless capacity adjustment.

Main features: 1. Efficient frequency conversion technology: using brushless DC motor (BLDC), with extremely high efficiency for some loads.

2. Vortex disc design: Hitachi's patented vortex disc technology has low leakage and high reliability.

3. Low vibration noise: Symmetrical structure, smooth operation, low noise and vibration.

4. Built in protection: The compressor has a built-in thermal protector.

The application scope is mainly used in the outdoor units of Hitachi SET-FREE series variable frequency multi split air conditioners (VRF) with 5 or 6 horsepower.

Key Features and Application Description

Principle of Vortex Compression:

A continuously changing compression chamber is formed by two interlocking vortex discs (one fixed and one orbiting), which push the refrigerant gas from the low-pressure zone to the high-pressure zone.

Advantages: Compared to reciprocating compressors, it has higher efficiency, smoother operation, lower noise and vibration, and better reliability.

Inverter technology:

Energy saving: avoids the huge current consumption caused by frequent start stop, and has a very high coefficient of performance (COP) under partial load.

Comfort: More precise room temperature control, minimal fluctuations, and no temperature difference between start and stop.

Rapid cooling/heating: After starting, it can operate at high frequency and quickly reach the set temperature.

This is the core of the compressor. It is not simply "on/off" like a fixed frequency compressor, but adjusts its speed infinitely by changing the operating frequency of the motor.

Benefits:

Refrigerant R410A:

This is a mixed refrigerant with a working pressure about 1.6 times higher than traditional R22.

Requirements for system and maintenance: Pipeline components (copper pipes, valves, etc.) and specialized tools that can withstand high pressure must be used. The operation requirements for vacuum pumping, pressure holding, and filling are very strict and require professional after-sales personnel to operate.

Built in protection:

The compressor usually integrates an overheat protector inside, which automatically cuts off the circuit when the compressor temperature rises abnormally, preventing the motor from burning out, and is an important safety device.

Important precautions (maintenance and replacement)

Non spare parts require professional replacement: The compressor is the "heart" of the air conditioning system, and its replacement is a complex system engineering that must be operated by qualified technicians.

System compatibility: When replacing the compressor, it is necessary to ensure that the new compressor is completely compatible with the control system, heat exchanger, throttling device, etc. of the outdoor unit. Directly replacing different models may result in abnormal system operation or even damage.

Lubricating oil management: When replacing the compressor, it is necessary to strictly handle the lubricating oil (POE oil). POE oil has strong hygroscopicity, and when exposed to air, it quickly absorbs moisture, leading to system ice blockage and the production of acidic substances. It is necessary to strictly follow the standard operation and supplement or replace the specified model and quantity of lubricating oil.

System cleanliness: After the compressor burns out, it will produce a large amount of acidic substances and metal debris, polluting the entire system. Before replacing the new compressor, the system pipeline must be thoroughly cleaned and purged with nitrogen, otherwise the new compressor will soon be damaged again.

Vacuum pumping and leak detection: Due to the use of R410A high-pressure refrigerant, the system has extremely high requirements for vacuum degree and sealing. High precision vacuum pumps and electronic leak detectors must be used for operation.

Summary: Hitachi LYA220A is a single-phase variable frequency scroll compressor used in 5-6 horsepower multi split units, known for its high efficiency, reliability, and quietness. Its maintenance and replacement are professional technical tasks, and should not be operated by oneself.