CN113790506A - Method for solving noise of air conditioner outdoor unit - Google Patents
Method for solving noise of air conditioner outdoor unit Download PDFInfo
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- CN113790506A CN113790506A CN202111083544.5A CN202111083544A CN113790506A CN 113790506 A CN113790506 A CN 113790506A CN 202111083544 A CN202111083544 A CN 202111083544A CN 113790506 A CN113790506 A CN 113790506A
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- compressor
- pressure
- suction
- air conditioner
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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
- F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
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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
- F24F1/40—Vibration or noise prevention at 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
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
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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
- F24F11/89—Arrangement or mounting of control or safety devices
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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
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/24—Means for preventing or suppressing noise
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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
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/24—Means for preventing or suppressing noise
- F24F2013/247—Active noise-suppression
Abstract
The invention relates to the technical field of noise elimination of an air conditioner outdoor unit, and discloses a method for solving noise of the air conditioner outdoor unit, which comprises the following steps of 1: starting an air conditioner, and starting a compressor; step 2: the pressure sensor detects pressure P and the air suction temperature T through the air suction temperature sensing bulb; and step 3: synchronously detecting whether the internal pressure of the compressor meets the condition that the pressure P for sliding sheet separation is not less than PM or not by calculating whether the suction superheat degree is negative or not and sucking liquid if the suction superheat degree is negative; and 4, step 4: if the pressure of the air is met, the opening degree of the electronic expansion valve is adjusted, the exhaust and suction are increased by closing the opening degree B, the suction superheat degree is increased, the pressure of the compressor is reduced, and the sliding sheet is prevented from being separated; and 5: if the opening of the electronic expansion valve is turned down, the pressure of the compressor cannot be reduced to ensure that the sliding sheet is not separated, the frequency of the compressor is controlled to be increased to F, the corresponding frequency is quickly increased, exhaust and suction are increased, the suction superheat degree is improved, the pressure of the compressor is reduced, P < PM is met, and the sliding sheet is ensured not to be separated.
Description
Technical Field
The invention relates to the technical field of noise elimination of an air conditioner outdoor unit, in particular to a method for solving noise of the air conditioner outdoor unit.
Background
Along with the development of economy, people's standard of living has been improved, also constantly promote the demand to the air conditioner, the function of air conditioner is also perfect, only the refrigeration heats the function and can not satisfy customer's demand, the air conditioner is closely related with customer's life, higher requirement has been had to the air conditioner, the travelling comfort is to satisfy the requirement on the one hand, on the other hand noise problem, the noise is not only satisfied with the size of noise total value yet, also need guarantee simultaneously that the noise peak value of other frequency bands of noise can not be too big, more need guarantee not have other abnormal sounds, outer machine sound of outer machine is more common noise, the sound penetrating power of the sound of the Da Can's, can't weaken through soundproof cotton etc., influence user experience.
In the suction muffler for reducing the noise of the compressor, the CN203809240U patent publication adopts the technical scheme that the flow area of a suction port is increased, the air inlet resistance is reduced, and the noise elimination effect is enhanced, so that the efficiency of the compressor is improved, and the use requirements of people are met. Although this method can enhance the noise cancellation effect, the flow area of the air inlet is increased, which increases the air flow rate and reduces the comfort of the user.
In order to meet the requirements of customers and improve the comfort of the customers to the greatest extent, a method for solving the noise of the outdoor unit of the air conditioner is urgently needed to meet the requirements of the customers.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides a method for solving the noise of an air conditioner outdoor unit, which is characterized in that on the basis of the original air conditioner, by adding a control logic for eliminating the clicking sound and synchronously adding a pressure sensor and an air suction temperature sensing bulb, the sliding sheet is prevented from being separated during the operation of the compressor, the clicking sound of the compressor is eliminated, and the comfort of a human body is effectively improved.
In order to achieve the purpose, the invention provides the following technical scheme: a method for eliminating noise of an air conditioner outdoor unit comprises,
step 1: starting an air conditioner, and starting a compressor;
step 2: the pressure sensor detects pressure P and the air suction temperature T through the air suction temperature sensing bulb;
and step 3: synchronously detecting whether the internal pressure of the compressor meets the condition that the pressure P for sliding sheet separation is not less than PM or not by calculating whether the suction superheat degree is negative or not and sucking liquid if the suction superheat degree is negative;
and 4, step 4: if the pressure of the air is met, the opening degree of the electronic expansion valve is adjusted, the exhaust and suction are increased by closing the opening degree B, the suction superheat degree is increased, the pressure of the compressor is reduced, and the sliding sheet is prevented from being separated;
and 5: if the opening of the electronic expansion valve is turned down, the pressure of the compressor cannot be reduced to ensure that the sliding sheet is not separated, the frequency of the compressor is controlled to be increased to F, the corresponding frequency is quickly increased, exhaust and suction are increased, the suction superheat degree is improved, the pressure of the compressor is reduced, P < PM is met, and the sliding sheet is ensured not to be separated.
Preferably, a controller, an actuator and a sensor are arranged inside the electronic expansion valve, and the actuator and the sensor are both electrically connected with the controller.
Preferably, the degree of superheat Tg of the suction gas in said steps 3 and 4 is < 0.
Preferably, the opening B of the electronic expansion valve in step 4 is not smaller than 50B.
Preferably, when the compressor is subjected to frequency rising in the step 5, the suction superheat Tg is more than or equal to 0.
Preferably, an electronic expansion valve is installed at the top of the compressor, and a pressure sensor and a suction temperature sensing bulb are arranged on an air pipe connected with the electronic expansion valve and the compressor.
In another aspect, the present invention further provides an air conditioner, wherein a method for solving noise of an outdoor unit of the air conditioner as described above is used.
A storage medium containing computer-executable instructions for performing the method of resolving noise of an outdoor unit of an air conditioner as described above when the computer-executable instructions are executed by a computer processor.
Compared with the prior art, the invention provides a method for solving the noise of an air conditioner outdoor unit, which has the following beneficial effects:
the method for solving the noise of the air conditioner outdoor unit is characterized in that on the basis of an original air conditioner, a pressure sensor and an air suction temperature sensing bulb are synchronously added by adding a control logic for eliminating the clicking sound, whether the air suction superheat degree is negative or not is calculated, if the air suction superheat degree is negative, the air suction temperature sensing bulb carries liquid, whether the internal pressure of a compressor meets the condition that the pressure P for separating a sliding sheet is not less than PM or not is synchronously detected, the exhaust and air suction are increased by closing the opening degree B, the air suction superheat degree is increased, the pressure of the compressor is reduced, and the sliding sheet is ensured not to be separated; if close little electronic expansion valve opening and can not make compressor pressure reduce to guarantee the gleitbretter not to separate, control compressor upbeat F rises corresponding frequency fast, risees to exhaust and breathe in, promotes and breathes in the superheat degree, and compressor pressure reduces, avoids compressor operation period gleitbretter to break away from, eliminates compressor and rattles, effectively improves human travelling comfort.
Drawings
FIG. 1 is a flow chart illustrating a method for resolving noise of an outdoor unit of an air conditioner according to the present invention;
FIG. 2 is a schematic diagram illustrating noise generation according to the method for solving the noise of the outdoor unit of the air conditioner of the present invention;
FIG. 3 is a noise audio spectrum of the method for solving the noise of the air conditioner outdoor unit according to the present invention;
fig. 4 is a control schematic diagram of an electronic expansion valve according to the method for solving the noise of the outdoor unit of the air conditioner.
Detailed Description
For a better understanding of the objects, structure and function of the invention, reference should be made to the following detailed description taken in conjunction with the accompanying drawings.
Example one
Referring to fig. 1-4, a method for solving noise of an air conditioner outdoor unit, step 1: starting an air conditioner, and starting a compressor;
step 2: the pressure sensor detects pressure P and the air suction temperature T through the air suction temperature sensing bulb;
and step 3: the method comprises the steps of synchronously detecting whether the internal pressure of the compressor meets the condition that the pressure P for separating a slip sheet is larger than or equal to PM (slip sheet separation force is larger than or equal to the extrusion force of the slip sheet) by calculating whether the suction superheat degree is negative (the suction superheat degree Tg is T-T1 (saturation temperature corresponding to suction pressure is detected)), and sucking liquid if the suction superheat degree is negative;
and 4, step 4: if the pressure difference meets the requirement, the opening degree of an electronic expansion valve is adjusted (only aiming at an electronic expansion valve system), exhaust and suction are increased by closing the opening degree B (which can not be less than 50B), the suction superheat degree is increased, the pressure of a compressor is reduced, and the sliding sheet is ensured not to be separated;
and 5: if the opening of the electronic expansion valve is closed to be small, the pressure of the compressor can not be reduced to ensure that the slip sheet is not separated (slip sheet separation force < slip sheet extrusion force), the frequency of the compressor is controlled to be increased to F, the corresponding frequency is increased rapidly, exhaust and suction are increased, the suction superheat degree is increased, the pressure of the compressor is reduced, P < PM is met, and the slip sheet is ensured not to be separated.
Furthermore, a controller, an actuator and a sensor are arranged in the electronic expansion valve, the actuator and the sensor are both electrically connected with the controller, the controller of the electronic expansion valve can be controlled by a single chip microcomputer, and the sensor can be a thermocouple or a thermal resistor.
Further, the suction superheat Tg in the step 3 and the step 4 is less than 0, the opening B of the electronic expansion valve in the step 4 cannot be less than 50B, and the suction superheat Tg is more than or equal to 0 when the compressor is subjected to frequency increase in the step 5.
Furthermore, an electronic expansion valve is installed at the top of the compressor, a pressure sensor and an air suction temperature sensing bulb are arranged on an air pipe connected with the electronic expansion valve and the compressor, the electronic expansion valve converts air suction temperature sensed by the air suction temperature sensing bulb into a pressure signal and then transmits the pressure signal to the diaphragm, and the opening degree of the valve is automatically adjusted.
Firstly, the compressor is reduced to the low frequency below 25Hz, the exhaust temperature is slowly reduced from high to low, the liquid refrigerant from the evaporator is gradually increased, the liquid refrigerant enters the cavity of the compressor to be slowly increased, and the pressure of the compression cavity is increased; in the working process of the compressor, when the amount of the liquid refrigerant reaches a certain degree, the pressure of the compression cavity can be instantly increased to a critical point, namely the slip sheet separation force is larger than the slip sheet extrusion force, so that the slip sheet is separated from the rotor and is impacted, and the rattling sound is formed as shown in figure 2. When the outdoor compressor of the air conditioner runs to a low frequency, the noise contrast test shows that the frequency spectrum of the Da Ge is reflected in the range of 6K-13K as shown in figure 3, and the Da Ge has strong penetrability and cannot be weakened through soundproof cotton and the like; the experimental experience was a discontinuous tapping "click". Mainly due to the low frequency operating time of the compressor, the operating frequency of the compressor and the discharge temperature of the compressor.
As shown in fig. 1, the present invention provides a control logic for solving the problem of the rattling noise of an external unit of an air conditioner, based on the compressor rattling noise generation principle, detecting a pressure P by a pressure sensor, detecting an air suction temperature T by an air suction bulb, calculating whether an air suction superheat degree is negative (the air suction superheat degree Tg is T-T1 (saturation temperature corresponding to the air suction pressure), sucking a liquid if the air suction superheat degree is negative, synchronously detecting whether the internal pressure of the compressor satisfies a slider separation pressure P ≧ PM (slider separation force ≧ slider extrusion force), if so, adjusting an electronic expansion valve opening (only for electronic expansion valve), and increasing an exhaust valve system and air suction by closing an opening B (not less than 50B), increasing the air suction superheat degree, decreasing the compressor pressure, and ensuring that the slider does not separate; if the opening of the electronic expansion valve is closed to be small, the pressure of the compressor can not be reduced to ensure that the slip sheet is not separated (slip sheet separation force < slip sheet extrusion force), the frequency of the compressor is controlled to be increased to F, the corresponding frequency is increased rapidly, exhaust and suction are increased, the suction superheat degree is increased, the pressure of the compressor is reduced, P < PM is met, and the slip sheet is ensured not to be separated. The compressor is eliminated, and the comfort of the human body is effectively improved.
Pressure PM when meeting the sliding sheet separation force and being equal to the sliding sheet extrusion force is measured through experiments, the sliding sheet separation force is the product of detection pressure P and the contact area of a sliding rod, and the sliding sheet extrusion force is electromagnetic force.
Example two
Based on the device for rapidly detecting the fault of the outdoor exhaust temperature sensing bulb provided in the second embodiment, a third preferred embodiment of the invention further provides an air conditioning unit, which comprises the method for solving the noise of the outdoor unit of the air conditioner.
EXAMPLE III
Based on the method for rapidly detecting the fault of the outdoor exhaust temperature sensing bulb of the air conditioner provided in the first embodiment, a sixth preferred embodiment of the present invention further provides a storage medium containing computer-executable instructions, wherein the computer-executable instructions are used for executing the method for solving the noise of the outdoor unit of the air conditioner when being executed by a computer processor.
It is to be understood that the present invention has been described with reference to certain embodiments, and that various changes in the features and embodiments, or equivalent substitutions may be made therein by those skilled in the art without departing from the spirit and scope of the invention. In addition, many modifications may be made to adapt a particular situation or material to the teachings of the invention without departing from the essential scope thereof. Therefore, it is intended that the invention not be limited to the particular embodiment disclosed, but that the invention will include all embodiments falling within the scope of the appended claims.
Claims (8)
1. A method for eliminating noise of an air conditioner outdoor unit comprises,
step 1: starting an air conditioner, and starting a compressor;
step 2: the pressure sensor detects pressure P and the air suction temperature T through the air suction temperature sensing bulb;
and step 3: synchronously detecting whether the internal pressure of the compressor meets the condition that the pressure P for sliding sheet separation is not less than PM or not by calculating whether the suction superheat degree is negative or not and sucking liquid if the suction superheat degree is negative;
and 4, step 4: if the pressure of the air is met, the opening degree of the electronic expansion valve is adjusted, the exhaust and suction are increased by closing the opening degree B, the suction superheat degree is increased, the pressure of the compressor is reduced, and the sliding sheet is prevented from being separated;
and 5: if the opening of the electronic expansion valve is turned down, the pressure of the compressor cannot be reduced to ensure that the sliding sheet is not separated, the frequency of the compressor is controlled to be increased to F, the corresponding frequency is quickly increased, exhaust and suction are increased, the suction superheat degree is improved, the pressure of the compressor is reduced, P < PM is met, and the sliding sheet is ensured not to be separated.
2. The method of claim 1, wherein the method further comprises: the electronic expansion valve is internally provided with a controller, an actuator and a sensor, and the actuator and the sensor are both electrically connected with the controller.
3. The method of claim 1, wherein the method further comprises: the suction superheat Tg in the steps 3 and 4 is less than 0.
4. The method of claim 1, wherein the method further comprises: the opening B of the electronic expansion valve in step 4 cannot be smaller than 50B.
5. The method of claim 1, wherein the method further comprises: and (5) when the compressor is subjected to frequency rising in the step (5), the suction superheat Tg is more than or equal to 0.
6. The method of claim 1, wherein the method further comprises: the top of the compressor is provided with an electronic expansion valve, and an air pipe connecting the electronic expansion valve and the compressor is provided with a pressure sensor and an air suction temperature sensing bulb.
7. An outer machine of air conditioner which characterized in that: the outdoor unit of the air conditioner adopts the method for solving the noise of the outdoor unit of the air conditioner as claimed in any one of claims 1 to 6.
8. A storage medium containing computer-executable instructions for performing the method of resolving noise of an outdoor unit of an air conditioner according to any one of claims 1 to 6 when the computer-executable instructions are executed by a computer processor.
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| CN114234411A (en) * | 2021-12-21 | 2022-03-25 | 珠海格力电器股份有限公司 | Torque calculation method of compressor and air conditioner with same |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114234411A (en) * | 2021-12-21 | 2022-03-25 | 珠海格力电器股份有限公司 | Torque calculation method of compressor and air conditioner with same |
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