What is the reason why the refrigerator compressor heats and does not cool
Principle of refrigerator compressor Currently household refrigerators and air conditioner compressors are positive displacement, which can be divided into reciprocating and rotary. The rotary type uses a rotating shaft crank mechanism. According to the application range, it can be divided into low back pressure type, medium back pressure type and high back pressure type. Low back pressure type (evaporation temperature -35～-15℃), generally used in household refrigerators, food freezers, etc. Medium back pressure type (evaporation temperature -20 ~ 0 ℃), generally used in cold drinks cabinets, milk refrigerators, etc. High back pressure type (evaporation temperature -5 ~ 15 ℃), generally used in room air conditioners, dehumidifiers, heat pumps, etc. The reciprocating compressor uses a piston, crank, connecting rod mechanism or piston, crank, slide tube mechanism.
1、Composition of refrigerator compressor
Refrigerator air conditioner is composed of four major parts: compressor, condenser, expansion valve and evaporator, according to the control or use needs, you can choose to install pressure controller, temperature controller, drying filter and other auxiliary devices, but the four major parts It's a lot.
2. Liquid refrigeration
When working, the gaseous refrigerant is compressed into high-temperature and high-pressure gas by the compressor, and then enters the condenser. The condenser is equivalent to a heat exchange device, which exchanges high-temperature and high-pressure gaseous refrigerant into low-temperature and high-pressure liquid refrigerant.
3. Throttling device
The liquid refrigerant passes through the expansion valve again. The so-called expansion valve is a throttling device. Since the refrigerant flowing out of the expansion valve is contained, the pressure of the refrigerant decreases and the temperature continues to drop after exiting. (The expansion valve of refrigerators is generally replaced by capillary tubes, because From the large tube to the small tube suddenly, it can also play the role of throttling) to become a gas-liquid two-phase.
4. Heat exchange gasification
Then enter the evaporator, at this time, the refrigerant re-evaporator performs heat exchange gasification, and becomes a high-temperature and low-pressure gas refrigerant back to the compressor to continue circulation. Reasons for refrigerator compressor heating and not cooling 1. If the compressor can start working, it is the problem of refrigerant leakage.
2. Although the compressor starts, it will also generate heat, but the compressor does not have a discharge pressure, which is not feasible, that is, the compressor is faulty.
3. The compressor cannot start. If the PTC starter on some refrigerator compressors is broken, the compressor will not start. At this time, the compressor will also be hot.
4.There may also be a dirty or ice plug failure in the pipeline system. If the compressor operating temperature is lower than normal, it is mostly caused by a broken leakage fault in the pipeline system. This situation occurs if there is no Leak detection and plugging will also quickly leak out if you add Freon Refrigerator refrigerator compressor heating and not cooling solution 1. First turn off the refrigerator power to allow the compressor to cool, then cut the refrigerator compressor exhaust pipe, turn on to see if there is any gas exhausted from the exhaust pipe, and check the exhaust pressure at the same time. Normal pressure means the compressor is normal. Check the amount of refrigerant while cutting the tube. A large quantity means no air leakage in the refrigeration system.
2. Cut the compressor return air pipe. Welding compressor exhaust pipe. Turn on the compressor to check whether there is any gas sucked into the compressor inlet. At the same time, there is no gas discharged from the air return pipe. There is a description that the refrigeration system is unobstructed,
3. If there is no problem in the above inspection, weld the pipeline, evacuate and add refrigerant.
4. Hearing sound indicates that the compressor is overloaded (the refrigeration system is blocked) or the compressor is faulty or the mechanical part is stuck. In the latter two cases, the compressor will generally need to be replaced
5. It is better to ask a special maintenance person to check and repair.
Refrigerator compressor is important, it is the central nerve of the refrigerator refrigeration system. Therefore, we must understand the refrigerator compressor when using the refrigerator. Only when the main situation of the refrigerator compressor is understood in detail, can the cause and place of the problem be found when the refrigerator compressor fails, so that the medicine can be treated appropriately.
Subscribe to relevant news content?
Subscription
Unsubscription
Recent related posts
01/16/2021
What is the reason why the refrigerator compressor heats and does not cool
Principle of refrigerator compressor Currently household refrigerators and air conditioner compressors are positive displacement, which can be divided into reciprocating and rotary. The rotary type uses a rotating shaft crank mechanism. According to th 器2 䀀 ￜ皥 䖒皦즠Ʋ㉄ᰙ 㲈Ʋ 䌁皦 ᮔDž༬皧㉎ᰙЀ 呄ᠾ鹨់༹皧 ࠄ 00령ꐱ댁珵뛐珵Љ 䕄ྦ 뤂ᐱ뚜珵 ᴴᏩ呄ᠾ퍘ᒥ 鹨់ᩄ ꋔྦ 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즠Ʋب ǜ V / 펔B䌁皦 ᮔDž '鱤džၜ먢䇨珵呈ᠾ뤂ᐱ ⿇⬿먲僧ᐱ㥲ᐲ�僬㣢ᐲ ᠾ 랖僧ۚ 識 �僬㣢ᐲ 臆S㥲ᐲ ᬄğ 識 理艏S杴 識杴 㥲ᐲ
01/16/2021
Refrigeration compressor purchase
Compressor selection is the first step in the establishment of a refrigeration system. Choosing a suitable refrigeration compressor can neither have excess power nor insufficient cooling capacity, which can lead to an increase in power consumption. It mus 器2 䀀 ￜ皥 䖒皦즠Ʋ奌ི 㲈Ʋ 䌁皦 ᮔDž༬皧奖ིЀ 呄ᠾ鹨់༹皧 ࠄ 00령ꐱ댁珵뛐珵Љ 䕄ྦ 뤂ᐱ뚜珵 ᴴᏩ呄ᠾ퍘ᒥ 鹨់ᩄ ꋔྦ 瑉浥 巠皱
01/15/2021
The reason why the refrigerator does not cool
[Introduction] The temperature of the refrigerator is low and it is mainly used to refrigerate food. It has a refrigerated box and a refrigerated freezer inside. Among them, there are one or more refrigerated boxes, and there is only one freezer. The temp 器2 䀀 ￜ皥 䖒皦즠Ʋ㉄ᰙ 㲈Ʋ 䌁皦 ᮔDž༬皧㉎ᰙЀ 呄ᠾ鹨់༹皧 ࠄ 00령ꐱ댁珵뛐珵Љ 䕄ྦ 뤂ᐱ뚜珵 ᴴᏩ呄ᠾ퍘ᒥ 鹨់ᩄ ꋔྦ 瑉浥 巠皱㙲皦抐皱 巠皱 ੨皦柘皱 ￜ皥 ب 巠皱㙲皦忈皱
01/15/2021
How to clean the air conditioner
Cleaning the external unit of the air conditioner is conducive to improving the operating efficiency of the air conditioner and extending the service life. How to clean the air conditioner external machine, what problems should be paid attention to when c 器2 䀀 ￜ皥 䖒皦즠Ʋ奌ི 㲈Ʋ 䌁皦
01/15/2021
Dafoss high-pressure
High pressure Compressor Compressor discharge pipe too hot Probable bellows leak in KVC capacity regulator. Solution Slowly loosen protective cap. If pressure or traces of refrigerant exist under the cap,there is a leak in the bellows.Replace val
01/15/2021
dafoss low-pressure
Differential setting on low pressure control too low. Solution: Area Low pressure System Part Compressor Symptom Compressor running time too short Potential Cause Differential setting on low pressure contol too low. Solution Increase the differ 器2 䀀
01/15/2021
Danfoss extends its Turbocor® training and support resources with 12 new e-lessons
Danfoss has released new online training materials for technicians working with its Turbocor® oil-free compressors—further extending the support and learning resources to help users and OEMs maintain long-lasting performance.
01/15/2021
Covid-19Taking precautions to keep the business running.
Covid-19Taking precautions to keep the business running. As the world steps up to the challenge of controlling the Covid19 virus, we are maintaining an unwavering commitment for safety as colleagues everywhere are keeping our operations and business goin 器2 䀀 ￜ皥 䖒皦즠Ʋ奌ི 㲈Ʋ 䌁皦 ᮔDž༬皧奖ིЀ 呄ᠾ鹨់༹皧 ࠄ 00령ꐱ댁珵뛐珵Љ 䕄ྦ 뤂ᐱ뚜珵 ᴴᏩ呄ᠾ퍘ᒥ 鹨់ᩄ ꋔྦ 瑉浥
01/15/2021
Working principle of air conditioning sensor_The role of air conditioning sensor
Air conditioning sensors are also called temperature sensors. The main function in air conditioning is to detect the temperature of various parts of the air conditioner. There are more than one air conditioning sensors in the air conditioner, and they are 器2 䀀 ￜ皥 䖒皦즠Ʋ㉄ᰙ 㲈Ʋ 䌁皦 ᮔDž༬皧㉎ᰙЀ 呄ᠾ鹨់༹皧 ࠄ 00령ꐱ댁珵뛐珵Љ 䕄ྦ 뤂ᐱ뚜珵 ᴴᏩ呄ᠾ퍘ᒥ 鹨់ᩄ ꋔྦ 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즠Ʋب ǜ V / 펔B䌁皦 ᮔDž '鱤džၜ먢䇨珵呈ᠾ뤂ᐱ ⿇⬿먲僧ᐱ㥲ᐲ�僬㣢ᐲ ᠾ 랖僧Ԣ 識 �僬㣢ᐲ 臆S㥲ᐲ ᬄğ 識 理艏S杴 識杴 㥲ᐲ
01/15/2021
The working environment of the air conditioner and the refrigerator freezer is different
The working environment of the air conditioner and the refrigerator freezer is different, which causes inconsistency in the variety of refrigerant used, and also affects the structure of the compressor.
Customers frequently viewed
IWAYA DENKI Water Pump 25CJT0752
US$2307.69
Panasonic Servo Motor MHMF022L1V2M
US$653.85
Honeywell Solenoid Valve VE4025B1045
US$334.62
ROTEN Mechanical Seal 8E5K-22-X
US$384.62
Sanken VFD Frequency Converter SHF-22K-A
US$1346.15
Festo Air Cylinder DSNU-40-125-P-A-S2
US$121.15
SANGEE Fan SG133HE2
US$1339.23
BANDO Belt DS8M-600-130
US$236.19
EVERLIN Speed Reducer MF300-L3-63-373
US$1142.60