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    Detailed analysis of the new fully enclosed compressor in the helicopter environmental control system

    Detailed analysis of the new fully enclosed compressor in the helicopter environmental control system With the changes in actual demand and technological progress, the refrigeration compressor in the helicopter environmental control system will use an integrated, lightweight, fully enclosed design to replace the use of electric motors to drive the application of refrigeration compressors and semi-hermetic compressors through belt drives. In order to ensure the normal physiological needs of aircrews and the normal operation of electronic equipment in the cabin, the helicopter needs to be equipped with a refrigeration cycle system. In particular, a large number of electronic devices are installed on modern military and civilian helicopters, which usually generate tremendous heat. At the same time, the expectations of personnel for the comfort of the helicopter cabin are also increasing. Therefore, modern high-performance helicopters have higher and higher requirements on refrigeration cycle systems. The evaporative cycle refrigeration (heat pump) method has been widely used in helicopter environmental control systems due to its high performance coefficient, small compensation loss, and no engine-induced advantages. At present, foreign helicopter evaporative cycle refrigeration products are mainly developed and produced by the American RSG company. Its heart component-the compressor, is driven by the intermediate frequency AC motor through the belt drive to drive the refrigeration compressor to achieve refrigeration. Shorts require frequent replacement, complex installation and maintenance, motors need to add additional heat dissipation systems and other defects. To this end, under the guidance of China Helicopter Design and Research Institute, Shaanxi Changling Special Equipment Co., Ltd. and Xi’an Jiaotong University have jointly developed a series of mid-frequency fully enclosed compressors with start-up and unloading functions, and the cooling capacity covers 4000W and 5000W. , 7500W (power supply three-phase AC 115V/400Hz), won the national invention patent (patent number: ZL2014 1 0198899.2), the international PCT has accepted, of which QWX-75 (refrigeration capacity 7500W) compressor obtained China in August 2017 Civil Aviation Administration PMA certification, plans to obtain the United States Federal Aviation Administration (FAA) certification, and sales to the international market. The intermediate frequency hermetic compressor has the function of starting and unloading, which solves the problem of instantaneous current shock when the traditional AC compressor starts, and realizes no-load step-down start. After the start is completed, the compressor working parts are loaded, so the starting voltage of the compressor motor The maximum can be reduced to 45V, and the instantaneous starting current is effectively controlled, avoiding the current impact of the traditional AC compressor when the instantaneous starting current reaches 5 to 7 times the working current. The shells of traditional semi-hermetic compressors are connected by bolts and sealed by rubber seals. As the compressors as pressure vessels, as the seals age, they will inevitably cause the compressor's own leakage problems. The hermetic compressor inherits the advantages of a home air-conditioning compressor. The motor and the refrigerant compression mechanism are coaxially connected as a whole, which is installed in a welded and sealed enclosure without the need for rubber seals. The structure is more compact and the entire life cycle No leakage, better sealing, and no possibility of foreign matter entering. In the event of a malfunction, only the entire compressor needs to be removed and replaced during field repairs, which is very convenient for maintenance. In addition, the motor of the compressor is sealed in an aluminum casing, which has good electromagnetic compatibility performance. At the same time, the motor is cooled by refrigerant to maintain a good working temperature. The motor performance is optimized and has a longer service life. Has passed the 4500h life test assessment. At present, the compressor has been used in small batches in domestic helicopter environmental control systems such as Zhi 8, AC313. Shaanxi Changling Special Equipment Co., Ltd. and Xi’an Jiaotong University are jointly developing a stepless speed control inverter airborne fully enclosed compressor, with a speed of 0 ~ 12000r/min adjustable, which will accumulate strength for the helicopter environmental control system again.

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    Detailed analysis of the new fully enclosed compressor in the helicopter environmental control system

    06/16/2020

    Detailed analysis of the new fully enclosed compressor in the helicopter environmental control system

    Detailed analysis of the new fully enclosed compressor in the helicopter environmental control system With the changes in actual demand and technological progress, the refrigeration compressor in the helicopter environmental control system will use an in器2䀀ￜ皥䖒皦즠Ʋ奌ི㲈Ʋ䌁皦ᮔDž༬皧奖ིЀ呄ᠾ鹨់༹皧ࠄ00령ꐱ댁珵뛐珵Љ䕄ྦ￿￿뤂ᐱ뚜珵ᴴᏩ呄ᠾ퍘ᒥ鹨់ᩄꋔྦ瑉浥巠皱㙲皦抐皱巠皱੨皦柘皱ￜ皥ب巠皱㙲皦

    Causes and solutions of frequent start-up of central air-conditioning compressors

    06/16/2020

    Causes and solutions of frequent start-up of central air-conditioning compressors

    Causes and solutions of frequent start-up of central air-conditioning compressors Central air-conditioning compressor 　　Air conditioner compressor frequent start fault solution We sometimes encounter frequent start-up of air conditioner compressor, s器2䀀ￜ皥䖒皦즠Ʋ㉄ᰙ㲈Ʋ䌁皦ᮔDž༬皧㉎ᰙЀ呄ᠾ鹨់༹皧ࠄ00령ꐱ댁珵뛐珵Љ䕄ྦ￿￿뤂ᐱ뚜珵ᴴᏩ呄ᠾ퍘ᒥ鹨់ᩄꋔྦ瑉浥巠皱㙲皦抐皱巠皱੨皦柘皱ￜ皥ب巠皱㙲皦忈皱੨皦柘皱즠Ʋǜ勁皦즠ƲبǜV /펔B䌁皦 ᮔDž'鱤džၜ먢䇨珵呈ᠾ뤂ᐱ⿇⬿먲僧ᐱ㥲ᐲ�僬㣢ᐲᠾ랖僧ը識�僬㣢ᐲ臆S㥲ᐲᬄğ識理艏S杴 識杴 㥲ᐲ

    What is the reason for the noisy central air conditioning and how to solve it

    06/16/2020

    What is the reason for the noisy central air conditioning and how to solve it

    What is the reason for the noisy central air conditioning and how to solve it Causes and solutions of large noise in central air conditioning 　　 First, the installation process is not in place It is said that the Daikin central air conditioner is "th器2䀀ￜ皥䖒皦즠Ʋ奌ི㲈Ʋ䌁皦ᮔDž༬皧奖ིЀ呄ᠾ鹨់༹皧ࠄ00령ꐱ댁珵뛐珵Љ䕄ྦ￿￿뤂ᐱ뚜珵ᴴᏩ呄ᠾ퍘ᒥ鹨់ᩄꋔྦ瑉浥巠皱㙲皦抐皱巠皱੨皦柘皱ￜ皥ب巠皱㙲皦忈皱੨皦柘皱즠Ʋǜ勁皦즠ƲبǜV /펔B䌁皦 ᮔDž'鱤džၜ먢䇨珵呈ᠾ뤂ᐱ⿇⬿먲僧ᐱ㥲ᐲ�僬㣢ᐲᠾ랖僧Ҍ識�僬㣢ᐲ臆S㥲ᐲᬄğ識理艏S

    Compressor working principle

    06/16/2020

    Compressor working principle

    Compressor working principle Compressor working principle 　　 Centrifugal compressor The centrifugal compressor is a working wheel with blades rotating on the shaft of the compressor. The gas entering the working wheel is carried by the blades to increa器2䀀ￜ皥䖒皦즠Ʋ㉄ᰙ㲈Ʋ䌁皦ᮔDž༬皧㉎ᰙЀ呄ᠾ鹨់༹皧ࠄ00령ꐱ댁珵뛐珵Љ䕄ྦ￿￿뤂ᐱ뚜珵ᴴᏩ呄ᠾ퍘ᒥ鹨់ᩄꋔྦ瑉浥巠皱㙲皦抐皱巠皱੨皦柘皱ￜ皥ب巠皱㙲皦忈皱੨皦柘皱즠Ʋǜ勁皦즠ƲبǜV /펔B䌁皦 ᮔDž'鱤džၜ먢䇨珵呈ᠾ뤂ᐱ⿇⬿먲僧ᐱ㥲ᐲ�僬㣢ᐲᠾ랖僧ࠌ識�僬㣢ᐲ臆S㥲ᐲᬄğ識理艏S杴 識杴 㥲ᐲ琉蒠S識器 直

    Compressor wiring diagram

    06/16/2020

    Compressor wiring diagram

    Compressor wiring diagram Wiring diagram of single-phase compressor 　　 Although the orientation of the terminals of compressors of different manufacturers is different, they are marked with letters next to each terminal; for single-phase compressors, C 器2䀀ￜ皥䖒皦즠Ʋ奌ི㲈Ʋ䌁皦ᮔDž༬皧奖ིЀ呄ᠾ鹨់༹皧ࠄ00령ꐱ댁珵뛐珵Љ䕄ྦ￿￿뤂ᐱ뚜珵ᴴᏩ呄ᠾ퍘ᒥ鹨់ᩄꋔྦ瑉浥巠皱㙲皦抐皱巠皱੨皦柘皱ￜ皥ب巠皱㙲皦忈皱੨皦柘皱즠Ʋǜ勁皦즠ƲبǜV /펔B䌁皦 ᮔDž'鱤džၜ먢䇨珵呈ᠾ뤂ᐱ⿇⬿먲僧ᐱ㥲ᐲ�僬㣢ᐲᠾ랖僧Ԫ識�僬㣢ᐲ臆S㥲ᐲᬄğ識理艏S杴 識杴 㥲ᐲ

    Working principle of automobile compressor

    06/16/2020

    Working principle of automobile compressor

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    Reasons for refrigerator compressor not working

    06/16/2020

    Reasons for refrigerator compressor not working

    Reasons for refrigerator compressor not working Reason one: Is the external power supply and compressor input voltage normal? Check whether the power supply and compressor input voltage meet the standard requirements (187 volts to 242 volts), whether 器2䀀ￜ皥䖒皦즠Ʋ奌ི㲈Ʋ䌁皦ᮔDž༬皧奖ིЀ呄ᠾ鹨់༹皧ࠄ00령ꐱ댁珵뛐珵Љ䕄ྦ￿￿뤂ᐱ뚜珵ᴴᏩ呄ᠾ퍘ᒥ鹨់ᩄꋔྦ瑉浥巠皱㙲皦抐皱巠皱੨皦柘皱ￜ皥ب巠皱㙲皦

    Can the compressor be repaired if it breaks

    06/16/2020

    Can the compressor be repaired if it breaks

    Can the air conditioner compressor be repaired? 　　 The air-conditioning compressor is broken and can be repaired. It is recommended that professional repair personnel be tested and repaired according to the actual situation. The air-conditioning compress器2䀀ￜ皥䖒皦즠Ʋ㉄ᰙ㲈Ʋ䌁皦ᮔDž༬皧㉎ᰙЀ呄ᠾ鹨់༹皧ࠄ00령ꐱ댁珵뛐珵Љ䕄ྦ￿￿뤂ᐱ뚜珵ᴴᏩ呄ᠾ퍘ᒥ鹨់ᩄꋔྦ瑉浥巠皱㙲皦抐皱巠皱੨皦柘皱ￜ皥ب巠皱㙲皦忈皱੨皦柘皱즠Ʋǜ勁皦즠ƲبǜV /펔B䌁皦 ᮔDž'鱤džၜ먢䇨珵呈ᠾ뤂ᐱ⿇⬿먲僧ᐱ㥲ᐲ�僬㣢ᐲᠾ랖僧א識�僬㣢ᐲ臆S㥲ᐲᬄğ識理艏S杴 識杴 㥲ᐲ

    Talking about the scheme of applying SY4000 general frequency converter in compressor

    06/16/2020

    Talking about the scheme of applying SY4000 general frequency converter in compressor

    Talking about the scheme of applying SY4000 general frequency converter in compressor Compressor introduction: Compressor (compressor), a kind of driven fluid machinery that transports gas and increases gas pressure. It is the heart of the refrigera器2䀀ￜ皥䖒皦즠Ʋ奌ི㲈Ʋ䌁皦ᮔDž༬皧奖ིЀ呄ᠾ鹨់༹皧ࠄ00령ꐱ댁珵뛐珵Љ䕄ྦ￿￿뤂ᐱ뚜珵ᴴᏩ呄ᠾ퍘ᒥ鹨់ᩄꋔྦ瑉浥巠皱㙲皦抐皱巠皱੨皦柘皱ￜ皥ب巠皱㙲皦忈皱੨皦柘皱즠Ʋǜ勁皦즠ƲبǜV /펔B䌁皦 ᮔDž'鱤džၜ먢䇨珵呈ᠾ뤂ᐱ⿇⬿먲僧ᐱ㥲ᐲ�僬㣢ᐲᠾ랖僧ऒ識�僬㣢ᐲ臆S㥲ᐲᬄğ識理艏S杴 識杴 㥲ᐲ琉蒠S識器 直囬ᐱ囸ᐱ嵭僦㠦ᐲᔇ僦囸ᐱ殺廼僦囬ᐱᙐ僦㠲ᐲ嵥僦直ᙧ僦㠲ᐲ令ᙐ僦㣮ᐲ嵭僦林ᙧ僦㣮ᐲ龍톺珵㥲ᐲ枬  퀖珵林춌珵蓄Cᴨ먢塚赺C直ᵘ먢塚㥲ᐲ礼藚C識直杴 器器蘯

    Talking about the four uses of air compressor

    06/16/2020

    Talking about the four uses of air compressor

    Talking about the four uses of air compressor Air compressor, which is a device that can compress gas. It is a device that converts the mechanical energy of a prime mover (usually a motor) into pneumatic energy. It is a pneumatic generating device for co器2䀀ￜ皥䖒皦즠Ʋ㉄ᰙ㲈Ʋ䌁皦ᮔDž༬皧㉎ᰙЀ呄ᠾ鹨់༹皧ࠄ00령ꐱ댁珵뛐珵Љ䕄ྦ￿￿뤂ᐱ뚜珵ᴴᏩ呄ᠾ퍘ᒥ鹨់

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