CN211526554U - Air conditioning system - Google Patents
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- CN211526554U CN211526554U CN201922090143.7U CN201922090143U CN211526554U CN 211526554 U CN211526554 U CN 211526554U CN 201922090143 U CN201922090143 U CN 201922090143U CN 211526554 U CN211526554 U CN 211526554U
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Abstract
The utility model relates to an air conditioning technology field, concretely relates to air conditioning system. The utility model discloses aim at solving the liquid refrigerant increase aggravation of the outdoor heat exchanger lower part that current outdoor heat exchanger exists the slow problem of outdoor heat exchanger lower part defrosting. Mesh for this reason, the utility model provides an air conditioning system when defrosting outdoor heat exchanger, gets into in the compressor after the liquid refrigerant of the low temperature low pressure through making vapour and liquid separator bottom becomes the gaseous refrigerant of low temperature low pressure through heat exchanger evaporation heat absorption. Therefore, the problem that the liquid refrigerant in the gas-liquid separator enters the outdoor heat exchanger in the defrosting process to aggravate the slow defrosting of the lower part of the outdoor heat exchanger is solved; in addition, the air-supplying and enthalpy-increasing function is also realized on the compressor, so that the defrosting effect of the outdoor heat exchanger is improved.
Description
Technical Field
The utility model relates to an air conditioning technology field, concretely relates to air conditioning system.
Background
The outdoor unit of the multi-connected air conditioner comprises an outdoor heat exchanger and a fan, wherein the fan is generally arranged close to the upper part of the outdoor heat exchanger, a plurality of refrigerant pipes are arranged side by side from top to bottom, the refrigerant inlet ends of the refrigerant pipes are connected with refrigerant flow dividing pipes, and the refrigerant outlet ends of the refrigerant pipes are connected with refrigerant collecting pipes. The refrigerant enters the refrigerant flow dividing pipe and then is divided into a plurality of flow paths which are respectively connected with a plurality of refrigerant pipes of the outdoor heat exchanger, and when the refrigerant flows out of the outdoor heat exchanger, the refrigerants in the refrigerant pipes enter the refrigerant collecting pipe together to be converged.
When the air conditioner adopts reverse circulation defrosting, the outdoor heat exchanger is used as a condenser to release heat to defrost the outdoor heat exchanger, at the moment, the indoor fan stops running, the heat exchange between the indoor heat exchanger and indoor air is little, most of liquid refrigerants directly enter the gas-liquid separator through the indoor heat exchanger, and the phenomena of gas refrigerant reduction and bubble increase of the gas-liquid separator can be generated. Therefore, a small amount of liquid refrigerant enters the compressor, and when the compressor conveys high-temperature and high-pressure gaseous refrigerant to the outdoor heat exchanger, part of the liquid refrigerant can enter the outdoor heat exchanger along with the gaseous refrigerant, wherein the liquid refrigerant can be deposited at the lower part of the outdoor heat exchanger under the action of gravity.
On one hand, the lower part of the outdoor heat exchanger is slowly defrosted due to less air volume at the lower part of the outdoor heat exchanger; on the other hand, the problem of slow defrosting of the lower part of the outdoor heat exchanger is also aggravated by the increase of liquid refrigerants at the lower part of the outdoor heat exchanger. When the defrosting of the upper heat exchanger is completed, the defrosting of the lower heat exchanger can be completed after a period of time, so that the overall defrosting time of the outdoor heat exchanger is longer, the energy is wasted, and the use experience of a user is reduced.
Accordingly, there is a need in the art for a new air conditioning system that addresses the above-mentioned problems.
SUMMERY OF THE UTILITY MODEL
In order to solve the above-mentioned problem among the prior art, the liquid refrigerant increase aggravation the slow problem of outdoor heat exchanger lower part defrosting for solving the outdoor heat exchanger lower part that current outdoor heat exchanger exists, the utility model provides an air conditioning system.
The utility model provides an air conditioning system, which comprises a refrigerant circulating flow path, and a compressor, a four-way reversing valve, a condenser, a heat exchanger, an evaporator and a gas-liquid separator which are arranged on the refrigerant circulating flow path; in the refrigerant circulating flow path, an exhaust port of the compressor can be sequentially communicated with the condenser, the heat exchanger and the evaporator through the four-way reversing valve, a refrigerant outlet of the evaporator can be communicated with a refrigerant inlet of the gas-liquid separator through the four-way reversing valve, and a first refrigerant outlet of the gas-liquid separator is communicated with an air suction port of the compressor; and a second refrigerant outlet is formed in the bottom of the gas-liquid separator and communicated with the air suction port or the air supplement port of the compressor through a heat exchanger.
As the utility model provides an above-mentioned air conditioning system's an preferred technical scheme, air conditioning system still includes the automatically controlled valve, the automatically controlled valve sets up the second refrigerant export with between the heat exchanger.
As the utility model provides an above-mentioned air conditioning system's an preferred technical scheme, air conditioning system still includes the second flow controller, the second flow controller sets up the automatically controlled valve with between the heat exchanger.
As a preferred technical solution of the above air conditioning system provided by the present invention, the air conditioning system further comprises a first temperature sensor, a second temperature sensor and a third temperature sensor; the first temperature sensor is disposed between the second choke and the heat exchanger; the second temperature sensor is arranged between the heat exchanger and a suction port of the compressor; the third temperature sensor is disposed between the electrically controlled valve and the second throttle.
As the utility model provides an above-mentioned air conditioning system's an preferred technical scheme, air conditioning system still includes the booster pump, the booster pump sets up the automatically controlled valve with between the second flow controller.
As the utility model provides an above-mentioned air conditioning system's an preferred technical scheme, air conditioning system still includes current sensor, current sensor is used for detecting the electric current of booster pump.
As the utility model provides an above-mentioned air conditioning system's an preferred technical scheme, air conditioning system still including set up in level sensor among the vapour and liquid separator.
As a preferable technical solution of the above air conditioning system provided by the present invention, the air conditioning system further includes an oil separator and a capillary tube; the oil separator is arranged between the exhaust port of the compressor and the four-way reversing valve, the exhaust port of the compressor is communicated with a refrigerant inlet of the oil separator, a refrigerant outlet of the oil separator is communicated with the four-way reversing valve, and an oil discharge port of the oil separator is communicated with an air suction port of the compressor through the capillary tube.
As a preferable technical solution of the above air conditioning system provided by the present invention, the air conditioning system further includes a check valve and a first restrictor; a check valve and a first throttler are arranged on a flow path between the outdoor heat exchanger and the heat exchanger in parallel, and the check valve is set to only allow refrigerant to flow from the outdoor heat exchanger to the heat exchanger.
As the utility model provides an above-mentioned air conditioning system's an optimal technical scheme, outdoor heat exchanger is including a plurality of refrigerant pipelines that from top to bottom set up, and parallelly connected between a plurality of refrigerant pipelines.
The utility model provides an air conditioning system when defrosting outdoor heat exchanger, gets into in the compressor after the liquid refrigerant of low temperature low pressure through making vapour and liquid separator bottom becomes the gaseous state refrigerant of low temperature low pressure through heat exchanger evaporation heat absorption. Therefore, the problem that the liquid refrigerant in the gas-liquid separator enters the outdoor heat exchanger in the defrosting process to aggravate the slow defrosting of the lower part of the outdoor heat exchanger is solved; in addition, the air-supplying and enthalpy-increasing function is also realized on the compressor, so that the defrosting effect of the outdoor heat exchanger is improved.
Further, the utility model provides an air conditioning system is still through setting up first temperature sensor, second temperature sensor and third temperature sensor to the monitoring is by the temperature of the second refrigerant export outflow of vapour and liquid separator bottom in expansion valve both sides and heat exchanger both sides, and according to the break-make of the temperature control second refrigerant export of monitoring and the aperture of second flow controller, in order to realize the control to air conditioning system among the defrosting process, and guaranteed to improve defrosting effect purpose and realize.
Drawings
The air conditioning system of the present invention is described below with reference to the accompanying drawings. In the drawings:
fig. 1 is a schematic structural diagram of a first air conditioning system of the present embodiment;
fig. 2 is a schematic structural diagram of a second air conditioning system of the present embodiment.
List of reference numerals
1-a compressor; 101-air supplement port; 102-an exhaust port; 103-air inlet; 2-an oil separator; 3-a capillary tube; a 4-four-way reversing valve; 5-outdoor heat exchanger; 501-a gas collection assembly; 502-upper collection assembly; 503-lower liquid collecting component; 6-a first choke; 7-a one-way valve; 8-a heat exchanger; 9-indoor heat exchanger; 10-a gas-liquid separator; 11-an electrically controlled valve; 12-a booster pump; 13-a second choke; 141-a first temperature sensor; 142-a second temperature sensor; 143-a third temperature sensor; 144-fourth temperature sensor.
Detailed Description
Preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only for explaining the technical principle of the present invention, and are not intended to limit the scope of the present invention. For example, although the present embodiment is described in connection with a multi-split air conditioning system, this is not intended to limit the scope of the present invention, and those skilled in the art may apply the present invention to other application scenarios without departing from the principles of the present invention.
It should be noted that in the description of the present invention, the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate directions or positional relationships based on those shown in the drawings, which are merely for convenience of description, and do not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
Furthermore, it should be noted that, in the description of the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In order to solve the problem that in the prior art, the liquid refrigerant at the lower part of the outdoor heat exchanger increases and the defrosting of the lower part of the outdoor heat exchanger is slow, the embodiment provides an air conditioning system.
As shown in fig. 1 and fig. 2, the present embodiment provides an air conditioning system, which includes a refrigerant circulation flow path, and a compressor 1, a four-way reversing valve 4, a condenser, a heat exchanger 8, an evaporator, and a gas-liquid separator 10, which are disposed on the refrigerant circulation flow path; in the refrigerant circulation flow path, an exhaust port 102 of the compressor 1 can be sequentially communicated with a condenser, a heat exchanger 8 and an evaporator through a four-way reversing valve 4, a refrigerant outlet of the evaporator can be communicated with a refrigerant inlet of the gas-liquid separator 10 through the four-way reversing valve 4, and a first refrigerant outlet of the gas-liquid separator 10 is communicated with a suction port 103 of the compressor 1; the bottom of the gas-liquid separator 10 is provided with a second refrigerant outlet, and the second refrigerant outlet is communicated with the suction port 103 or the air supplement port 101 of the compressor 1 through the heat exchanger 8. Wherein, the condenser and the evaporator are named after the air conditioner operates in refrigeration.
For example, in the air conditioning system of the present embodiment, when cooling, the outdoor heat exchanger 5 functions as a condenser to perform condensation heat release, and the indoor heat exchanger 9 functions as an evaporator to perform evaporation heat absorption, so as to reduce the indoor temperature; when the air conditioning system heats, the outdoor heat exchanger 5 serves as an evaporator to perform evaporation and heat absorption, and the indoor heat exchanger 9 serves as a condenser to perform condensation and heat release, so that the indoor temperature is increased. Thus, the temperature of the indoor air is adjusted.
The compressor 1 in this embodiment may be a general compressor, or may be an enthalpy-increasing compressor. As shown in fig. 1, the compressor 1 in the air conditioning system is a normal compressor, and the second refrigerant outlet is communicated with the suction port 103 of the compressor 1 through the heat exchanger 8; in the air conditioning system shown in fig. 2, the compressor 1 is an enthalpy increasing compressor, and the second refrigerant outlet is connected to the air supply port 101 of the compressor 1 through the heat exchanger 8.
In the air conditioning system of the present embodiment, the second refrigerant outlet is communicated with the suction port 103 or the supplementary port 101 of the compressor 1 through the heat exchanger 8 to form an auxiliary pipeline. When the outdoor heat exchanger 5 is defrosted, the low-temperature low-pressure liquid refrigerant at the bottom of the gas-liquid separator 10 exchanges heat with the high-temperature high-pressure liquid refrigerant flowing out of the outdoor heat exchanger 5 when flowing into the heat exchanger 8 from the second refrigerant outlet, and the low-temperature low-pressure gas-liquid mixed refrigerant evaporates and absorbs heat to become a low-temperature low-pressure gas refrigerant, and enters the compressor 1 through the air suction port 103 or the air supplement port 101 of the compressor 1
. Therefore, the problem that the liquid refrigerant in the gas-liquid separator 10 enters the outdoor heat exchanger 5 in the defrosting process to aggravate the slow defrosting of the lower part of the outdoor heat exchanger 5 is solved; in addition, when the second refrigerant outlet is communicated with the air supplement port 101 of the compressor 1 through the heat exchanger 8, the air supplement and enthalpy increase effects are also realized on the compressor 1, so that the defrosting effect of the outdoor heat exchanger 5 is improved.
Because the liquid refrigerant at the bottom of the gas-liquid separator 10 contains a large amount of lubricating oil, in the air conditioning system of this embodiment, during defrosting, the lubricating oil deposited at the bottom of the gas-liquid separator 10 also enters the compressor 1 through the auxiliary pipeline, and plays a certain role in lubricating the scroll of the compressor 1, thereby reducing the possibility of oil shortage of the compressor 1.
As a preferred embodiment of the air conditioning system provided in this embodiment, the air conditioning system further includes an electronic control valve 11, and the electronic control valve 11 is disposed between the second refrigerant outlet and the heat exchanger 8.
For example, the electric control valve 11 in the present embodiment may be a valve such as an electromagnetic valve, which can switch on/off the refrigerant between the second refrigerant outlet on the auxiliary pipeline and the compressor 1. In the embodiment, the electric control valve 11 is arranged between the second refrigerant outlet and the heat exchanger 8, so that the system receives an instruction of entering the defrosting mode; before the air conditioning system enters the defrosting mode, the electric control valve 11 can be opened to control the conduction of the auxiliary pipeline. When the surplus liquid refrigerant in the gas-liquid separator 10 is discharged, the electric control valve 11 can be closed. So as to improve the defrosting effect of the outdoor heat exchanger 5 and simultaneously not influence the normal operation of the air conditioning system.
In a preferred embodiment of the air conditioning system provided in this embodiment, the air conditioning system further includes a second throttle, and the second throttle is disposed between the electrically controlled valve and the heat exchanger.
In the present embodiment, the second restrictor is disposed between the electric control valve and the heat exchanger, so that when defrosting the outdoor heat exchanger 5, the low-temperature and low-pressure liquid refrigerant at the bottom of the gas-liquid separator 10 flows into the second restrictor 13 from the second refrigerant outlet, and the second restrictor 13 may be an electronic expansion valve, a thermostatic expansion valve, or other device 4 for reducing the pressure of the refrigerant. Thus, the second restrictor 13 converts the low-temperature and low-pressure liquid refrigerant into a low-temperature and low-pressure gas-liquid mixed refrigerant; when the gas-liquid mixed refrigerant passes through the heat exchanger 8, the gas-liquid mixed refrigerant exchanges heat with the high-temperature and high-pressure liquid refrigerant flowing out of the outdoor heat exchanger 5, and the low-temperature and low-pressure gas-liquid mixed refrigerant evaporates and absorbs heat to become a low-temperature and low-pressure gaseous refrigerant. Thus, the effect of converting the low-temperature low-pressure liquid refrigerant flowing out of the second refrigerant outlet into the low-temperature low-pressure gas refrigerant is improved, and the defrosting effect of the outdoor heat exchanger 5 is further improved.
As a preferred embodiment of the air conditioning system provided in this embodiment, the air conditioning system further includes a first temperature sensor 141, a second temperature sensor 142, and a third temperature sensor 143; the first temperature sensor 141 is provided between the second throttle 13 and the heat exchanger 8; the second temperature sensor 142 is provided between the heat exchanger 8 and the suction port 103 of the compressor 1; a third temperature sensor 143 is provided between the electrically controlled valve 11 and the second throttle 13.
Illustratively, a first temperature value of the first temperature sensor 141 and a second temperature value of the second temperature sensor 142 are obtained; calculating a temperature difference value between the first temperature value and the second temperature value, namely subtracting the first temperature value from the second temperature value to obtain a temperature difference value; the opening degree of the second throttle 13 is adjusted based on the temperature difference. As will be understood by those skilled in the art, the larger the opening degree of the second throttling device 13 is, the smaller the pressure reduction effect on the refrigerant is; the smaller the opening degree of the second throttle 13 is, the greater the pressure reducing effect on the refrigerant is. The refrigerant in the second throttling device 13 passes through the heat exchanger 8 to change the refrigerant from a gas-liquid mixed state to a gaseous state, and if the temperature difference between the first temperature value and the second temperature value is too large, the conversion efficiency of the refrigerant from the gas-liquid mixed state to the gaseous state is reduced, so that the temperature difference is preferably between a second temperature difference threshold and a third temperature difference threshold, for example, the second temperature difference threshold may be 2 ℃ and the third temperature difference threshold may be 0 ℃.
Comparing the temperature difference value with a second temperature difference threshold value; if the temperature difference is equal to or greater than the second temperature difference threshold, the opening degree of the second throttle 13 is increased. Comparing the temperature difference value with a third temperature difference threshold value; if the temperature difference is less than or equal to the third temperature difference threshold, the opening degree of the second throttle 13 is decreased. So as to ensure that the liquid refrigerant flowing out of the second refrigerant outlet of the gas-liquid separator 10 can be efficiently changed into the gaseous refrigerant to enter the compressor 1.
The third temperature sensor 143 is configured to monitor a third temperature value at the refrigerant inlet end of the second throttling device 13. Acquiring a first temperature value of the first temperature sensor 141 and a third temperature value of the third temperature sensor 143; calculating a temperature difference value between the first temperature value and the third temperature value; comparing the temperature difference value with a first temperature difference threshold value; if the temperature difference is smaller than the first temperature difference threshold, for example, 3 ℃, it is determined that the auxiliary pipeline satisfies the blocking condition, and the electronic control valve 11 may be closed.
When the temperature difference between the first temperature value and the third temperature value at the two ends of the second throttling device 13 on the auxiliary pipeline is close to 0 ℃, the refrigerant discharged from the second refrigerant outlet of the gas-liquid separator 10 is basically gas. However, in order to prevent accidents, a certain amount of liquid refrigerant needs to be retained in the gas-liquid separator 10, so the first temperature difference threshold may be selected to be a temperature slightly higher than 0 ℃, for example, 3 ℃.
Furthermore, a fourth temperature sensor 144 may be connected to one end of the exhaust port 102 of the compressor 1, and the frequency and other parameters of the compressor 1 may be controlled by comparing the temperature of the refrigerant at one end of the air supplement port 101 of the compressor 1 with the temperature of the refrigerant at one end of the exhaust port 102 of the compressor, so as to control the heating, cooling and defrosting processes of the air conditioning system, and improve the operating efficiency of the air conditioner.
As a preferred embodiment of the air conditioning system provided in this embodiment, the air conditioning system further includes a booster pump 12, and the booster pump 12 is disposed between the electrically controlled valve 11 and the second restrictor 13.
For example, the booster pump 12 disposed between the electric control valve 11 and the second throttle 13 may convert the low-temperature low-pressure liquid refrigerant discharged from the second refrigerant outlet of the gas-liquid separator 10 into a low-temperature high-pressure liquid refrigerant, and increase the pressure of the refrigerant in the auxiliary pipeline, so as to further improve the effect that the auxiliary pipeline converts the low-temperature low-pressure liquid refrigerant into a low-temperature low-pressure gas refrigerant, and deliver the low-temperature low-pressure gas refrigerant to the compressor 1, thereby improving the conversion efficiency of the liquid refrigerant and reducing the defrosting waiting time.
As a preferred embodiment of the air conditioning system provided in this embodiment, the air conditioning system further includes a current sensor for detecting the current of the booster pump 12.
Illustratively, the booster pump 12 has a different current value when it delivers the gaseous refrigerant, the liquid refrigerant, and the gas-liquid mixture refrigerant, and the current value when it delivers the liquid refrigerant is larger than that when it delivers the gaseous refrigerant. A current sensor that detects the current of the booster pump 12 may be provided to determine whether the auxiliary line satisfies the blocking condition by detecting the current of the booster pump 12. Specifically, an initial current value and a real-time current value of the booster pump 12 are obtained; calculating the current value change rate of the real-time current value relative to the initial current value; if the current value change rate is greater than a preset change rate threshold value, judging that the auxiliary pipeline meets the blocking condition; the initial current value is a current value when the auxiliary pipeline is just turned on, an average current value of the auxiliary pipeline just turned on within 10 seconds can be used as the initial current value, and the preset change rate threshold value can be 0.1.
As a preferred embodiment of the air conditioning system provided in this embodiment, the air conditioning system further includes a liquid level sensor disposed in the gas-liquid separator 10.
For example, when the liquid refrigerant in the gas-liquid separator flows out from the second refrigerant outlet, the actual liquid level value of the liquid refrigerant in the gas-liquid separator 10 may be changed, the actual liquid level value in the gas-liquid separator 10 may be detected by the liquid level sensor, and whether the auxiliary pipeline meets the blocking condition is determined by the actual liquid level value in the gas-liquid separator 10. Specifically, the actual liquid level value of the refrigerant in the gas-liquid separator 10 is obtained; comparing the actual liquid level value with a preset liquid level value; and if the actual liquid level value is less than or equal to the preset liquid level value, judging that the auxiliary pipeline meets the blocking condition. For example, when the liquid level is lowered to 10cm above the second refrigerant outlet at the bottom, the auxiliary pipeline meets the blocking condition.
As a preferred embodiment of the air conditioning system provided in this embodiment, the air conditioning system further includes an oil separator 2 and a capillary tube 3; the oil separator 2 is disposed between the exhaust port 102 of the compressor 1 and the four-way selector valve 4, the exhaust port 102 of the compressor 1 communicates with the refrigerant inlet of the oil separator 2, the refrigerant outlet of the oil separator 2 communicates with the four-way selector valve 4, and the oil discharge port of the oil separator 2 communicates with the suction port 103 of the compressor 1 through the capillary tube 3.
For example, the oil separator 2 in the present embodiment can separate most of the lubricating oil carried by the refrigerant in the compressor 1, and the separated lubricating oil flows into the compressor 1 through the capillary tube 3, so as to ensure the safe and efficient operation of the air conditioning system.
As a preferred embodiment of the air conditioning system provided in this embodiment, the air conditioning system further includes a check valve 7 and a first restrictor 6; a check valve 7 and a first restrictor 6 are arranged in parallel on a flow path between the outdoor heat exchanger 5 and the heat exchanger 8, and the check valve 7 is arranged to allow only the refrigerant to flow from the outdoor heat exchanger 5 to the heat exchanger 8.
Illustratively, when the air conditioner is used for cooling, the refrigerant flows from the outdoor heat exchanger 5 to the heat exchanger 8 through the check valve 7; when the air conditioner heats, the refrigerant enters the outdoor heat exchanger 5 through the throttling function of the first throttling device 6 in the process of flowing from the heat exchanger 8 to the outdoor heat exchanger 5, so that the effect of evaporation and heat absorption of the refrigerant in the outdoor heat exchanger 5 is improved.
As a preferred embodiment of the air conditioning system provided in this embodiment, the outdoor heat exchanger 5 includes a plurality of refrigerant pipelines arranged from top to bottom, and the plurality of refrigerant pipelines are connected in parallel.
For example, the plurality of refrigerant pipes of the outdoor heat exchanger 5 in the present embodiment may be arranged in parallel from top to bottom. The outdoor heat exchanger 5 is provided with a gas collecting assembly 501 at one end close to the four-way reversing valve 4, and after the gaseous refrigerant flows into the gas collecting assembly 501, the gas collecting assembly 501 divides the gaseous refrigerant into a plurality of flow paths to be respectively connected to a plurality of refrigerant pipelines. An upper liquid collecting assembly 502 and a lower liquid collecting assembly 503 are arranged at one end of the outdoor heat exchanger 5 close to the heat exchanger 8, one end of the upper liquid collecting assembly 502 is communicated with a refrigerant pipeline at the upper part of the outdoor heat exchanger 5, one end of the lower liquid collecting assembly 503 is communicated with a refrigerant pipeline at the lower part of the outdoor heat exchanger 5, and then the other ends of the upper liquid collecting assembly 502 and the lower liquid collecting assembly 503 converge liquid refrigerants and flow to the heat exchanger 8.
The air conditioning system provided by the embodiment receives an instruction of entering a defrosting mode; and before the air conditioning system enters the defrosting mode, controlling the auxiliary pipeline to be conducted. When the auxiliary pipeline is conducted, the electric control valve 11, the booster pump 12 and the second throttler 13 are sequentially opened; when the auxiliary pipeline meets the blocking condition, the booster pump 12, the electric control valve 11 and the second throttler 13 are closed in sequence. If the electrically controlled valve 11 is closed first, the booster pump 12 continues to operate, which may cause damage to the booster pump 12 and may not be beneficial to the safe and efficient operation of the air conditioning system.
Of course, the above alternative embodiments, and the alternative embodiments and the preferred embodiments can also be used in a cross-matching manner, so that a new embodiment is combined to be suitable for a more specific application scenario.
Furthermore, those skilled in the art will appreciate that although some embodiments described herein include some features included in other embodiments instead of others, combinations of features of different embodiments are meant to be within the scope of the invention and form different embodiments. For example, in the claims of the present invention, any of the claimed embodiments may be used in any combination.
So far, the technical solution of the present invention has been described with reference to the preferred embodiments shown in the drawings, but it is easily understood by those skilled in the art that the scope of the present invention is obviously not limited to these specific embodiments. Without departing from the principle of the present invention, a person skilled in the art can make equivalent changes or substitutions to the related technical features, and the technical solutions after these changes or substitutions will fall within the protection scope of the present invention.
Claims (10)
1. An air conditioning system characterized by:
the system comprises a refrigerant circulating flow path, and a compressor, a four-way reversing valve, a condenser, a heat exchanger, an evaporator and a gas-liquid separator which are arranged on the refrigerant circulating flow path;
in the refrigerant circulating flow path, an exhaust port of the compressor can be sequentially communicated with the condenser, the heat exchanger and the evaporator through the four-way reversing valve, a refrigerant outlet of the evaporator can be communicated with a refrigerant inlet of the gas-liquid separator through the four-way reversing valve, and a first refrigerant outlet of the gas-liquid separator is communicated with an air suction port of the compressor;
and a second refrigerant outlet is formed in the bottom of the gas-liquid separator and communicated with the air suction port or the air supplement port of the compressor through a heat exchanger.
2. The air conditioning system of claim 1, wherein:
the heat exchanger also comprises an electric control valve, and the electric control valve is arranged between the second refrigerant outlet and the heat exchanger.
3. The air conditioning system of claim 2, wherein:
and the second throttling device is arranged between the electric control valve and the heat exchanger.
4. The air conditioning system of claim 3, wherein:
the temperature sensor also comprises a first temperature sensor, a second temperature sensor and a third temperature sensor;
the first temperature sensor is disposed between the second choke and the heat exchanger; the second temperature sensor is arranged between the heat exchanger and a suction port of the compressor; the third temperature sensor is disposed between the electrically controlled valve and the second throttle.
5. The air conditioning system of claim 3, wherein:
the booster pump is arranged between the electric control valve and the second throttling device.
6. The air conditioning system of claim 5, wherein:
the booster pump further comprises a current sensor, and the current sensor is used for detecting the current of the booster pump.
7. The air conditioning system of claim 1, wherein:
the gas-liquid separator also comprises a liquid level sensor arranged in the gas-liquid separator.
8. The air conditioning system of claim 1, wherein:
also includes an oil separator and a capillary tube;
the oil separator is arranged between the exhaust port of the compressor and the four-way reversing valve, the exhaust port of the compressor is communicated with a refrigerant inlet of the oil separator, a refrigerant outlet of the oil separator is communicated with the four-way reversing valve, and an oil discharge port of the oil separator is communicated with an air suction port of the compressor through the capillary tube.
9. The air conditioning system of claim 1, wherein:
the device also comprises a one-way valve and a first restrictor;
a check valve and a first throttler are arranged on a flow path between the outdoor heat exchanger and the heat exchanger in parallel, and the check valve is set to only allow refrigerant to flow from the outdoor heat exchanger to the heat exchanger.
10. The air conditioning system of claim 1, wherein:
the outdoor heat exchanger comprises a plurality of refrigerant pipelines arranged from top to bottom, and the plurality of refrigerant pipelines are connected in parallel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922090143.7U CN211526554U (en) | 2019-11-27 | 2019-11-27 | Air conditioning system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922090143.7U CN211526554U (en) | 2019-11-27 | 2019-11-27 | Air conditioning system |
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| CN211526554U true CN211526554U (en) | 2020-09-18 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112682905A (en) * | 2020-12-02 | 2021-04-20 | 珠海格力电器股份有限公司 | Liquid supplementing type air conditioning system, control method, computer equipment and terminal |
| CN114370692A (en) * | 2022-02-28 | 2022-04-19 | 海信（广东）空调有限公司 | Air conditioner and control method thereof |
-
2019
- 2019-11-27 CN CN201922090143.7U patent/CN211526554U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112682905A (en) * | 2020-12-02 | 2021-04-20 | 珠海格力电器股份有限公司 | Liquid supplementing type air conditioning system, control method, computer equipment and terminal |
| CN112682905B (en) * | 2020-12-02 | 2022-02-08 | 珠海格力电器股份有限公司 | Liquid supplementing type air conditioning system, control method, computer equipment and terminal |
| CN114370692A (en) * | 2022-02-28 | 2022-04-19 | 海信（广东）空调有限公司 | Air conditioner and control method thereof |
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