CN219014477U - Air conditioner outdoor unit and air conditioning system - Google Patents
Air conditioner outdoor unit and air conditioning system Download PDFInfo
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- CN219014477U CN219014477U CN202222837527.2U CN202222837527U CN219014477U CN 219014477 U CN219014477 U CN 219014477U CN 202222837527 U CN202222837527 U CN 202222837527U CN 219014477 U CN219014477 U CN 219014477U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
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Abstract
The utility model relates to an air conditioner outdoor unit and an air conditioning system, belongs to the technical field of air conditioners, and solves the technical problem of high cost caused by the fact that a subcooler, an enthalpy-increasing pipeline and a heating component are additionally arranged in the air conditioner outdoor unit in the prior art. The outdoor unit of the air conditioner comprises a compressor provided with an enthalpy-increasing air suction port; the outdoor heat exchanger is provided with an upper heat exchange row, and a first heat exchange tube and a second heat exchange tube which are positioned below the upper heat exchange row; the first heat exchange pipe is communicated between the upper heat exchange row and the air conditioner indoor unit; the second heat exchange tube is communicated and arranged between the upper heat exchange row and the enthalpy-increasing air suction port of the compressor. The air conditioning system comprises the air conditioning outdoor unit. With the structure, the air conditioner outdoor unit and the air conditioning system have lower cost.
Description
Technical Field
The utility model belongs to the technical field of air conditioners, and particularly relates to an air conditioner outdoor unit and an air conditioning system.
Background
The outdoor unit of the existing air conditioning system is generally provided with a subcooler to improve the supercooling degree of the refrigerant flowing into the indoor unit under the refrigeration working condition, and is also independently provided with an additional enthalpy-increasing pipeline for increasing the enthalpy of the compressor, in addition, a heating component is also independently arranged for heating the enthalpy-increasing pipeline under the heating working condition so as to avoid the icing of the enthalpy-increasing pipeline, and the subcooler, the additional enthalpy-increasing pipeline and the additional heating component lead to high cost of the air conditioning outdoor unit in the prior art.
Disclosure of Invention
The utility model provides an air conditioner outdoor unit and an air conditioning system, which are used for solving the technical problem of high cost caused by the additional arrangement of a subcooler, an enthalpy-increasing pipeline and a heating component in the air conditioner outdoor unit in the prior art.
The utility model is realized by the following technical scheme: an outdoor unit of an air conditioner, comprising:
the compressor is provided with an enthalpy-increasing air suction port;
the outdoor heat exchanger is provided with an upper heat exchange row, and a first heat exchange tube and a second heat exchange tube which are positioned below the upper heat exchange row;
the first heat exchange pipe is communicated between the upper heat exchange row and the air conditioner indoor unit;
the second heat exchange tube is communicated and arranged between the upper heat exchange row and the enthalpy-increasing air suction port of the compressor.
Further, in order to better implement the present utility model, it further includes:
and the first throttle valve is arranged on a first pipeline which is communicated with the second heat exchange pipe and the upper heat exchange row.
Further, in order to better implement the present utility model, the first throttle valve is an electronic expansion valve.
Further, in order to better implement the present utility model, it further includes:
the liquid collecting pipe is communicated with one ends of the compressor and the upper heat exchange row;
the capillary tube is communicated with the other ends of the knockout and the upper layer heat exchange row;
the first heat exchange tube and the second heat exchange tube are communicated with the liquid separator;
the first throttle valve is arranged on a first pipeline which is communicated with the second heat exchange pipe and the liquid distributor.
Further, in order to better realize the utility model, fins are arranged on the outer walls of the first heat exchange tube and the second heat exchange tube, and the fins on the first heat exchange tube are attached to the fins on the second heat exchange tube;
the first heat exchange tube and the second heat exchange tube are respectively positioned on the leeward side and the windward side in the air conditioner outdoor unit.
Further, in order to better realize the present utility model, the first heat exchange tube and the second heat exchange tube are both serpentine tubes, and the first heat exchange tube and the second heat exchange tube are arranged in staggered arrangement.
The present utility model also provides an air conditioning system, comprising:
the air conditioner indoor unit is communicated with the first heat exchange tube through a second pipeline, and a second throttle valve is arranged on the second pipeline.
The utility model also provides a control method of the air conditioning system, which comprises the following steps:
acquiring an operation mode of the air conditioning system;
and regulating the flow direction of the refrigerant in the air conditioning system according to the operation mode of the air conditioning system.
Further, in order to better implement the present utility model, the operation mode of the air conditioning system is a cooling mode, and the method includes:
the high-temperature and high-pressure refrigerant is sent into the upper layer heat exchange row by utilizing a compressor to exchange heat, so that a medium-pressure two-phase refrigerant is obtained;
the upper heat exchange row is utilized to send part of the medium-pressure two-phase refrigerant into the first heat exchange tube, and the upper heat exchange row is utilized to send the other part of the medium-pressure two-phase refrigerant into the second heat exchange tube;
blowing air from one side of the second heat exchange tube by using a fan in the air conditioner outdoor unit, and taking part of cold energy of medium-pressure two-phase refrigerant in the second heat exchange tube to the first heat exchange tube by using wind power so as to increase the supercooling degree of the refrigerant in the first heat exchange tube, wherein the medium-pressure two-phase refrigerant losing part of cold energy in the second heat exchange tube is evaporated to form a gaseous refrigerant;
and sending the refrigerant with increased supercooling degree into the air conditioner indoor unit by using the first heat exchange tube to perform refrigeration, and sending the gaseous refrigerant into an enthalpy-increasing air suction port of the compressor by using the second heat exchange tube to perform enthalpy-increasing on the compressor.
Further, in order to better implement the present utility model, the operation mode of the air conditioning system is a heating mode, and the method includes:
the compressor is utilized to send the high-temperature and high-pressure refrigerant into the indoor unit of the air conditioner for heating, so as to obtain the condensed refrigerant;
the condensed refrigerant in the air conditioner indoor unit is sent to the second throttle valve by utilizing the second pipeline, and the second throttle valve is used for throttling and reducing the pressure of the condensed refrigerant to obtain a low-pressure two-phase refrigerant;
the low-pressure two-phase refrigerant is sent into the first heat exchange tube by the second pipeline to heat the first heat exchange tube and the second heat exchange tube attached to the first heat exchange tube;
the first heat exchange tube is used for sending part of the low-pressure two-phase refrigerant into the upper heat exchange row for evaporation, and the first heat exchange tube is used for sending the other part of the low-pressure two-phase refrigerant into the second heat exchange tube;
heating the low-pressure two-phase refrigerant by using the second heat exchange tube heated by the first heat exchange tube so as to evaporate the low-pressure two-phase refrigerant in the second heat exchange tube into a gaseous refrigerant;
and sending the evaporated refrigerant back to the compressor by using the upper heat exchange row, and sending the gaseous refrigerant to an enthalpy-increasing air suction port of the compressor by using the second heat exchange tube so as to increase the enthalpy of the compressor.
Compared with the prior art, the utility model has the following beneficial effects:
(1) The outdoor unit of the air conditioner comprises a compressor and an outdoor heat exchanger, wherein the compressor is provided with an enthalpy-increasing air suction port, the outdoor heat exchanger is provided with an upper heat exchange row, a first heat exchange tube and a second heat exchange tube which are positioned below the upper heat exchange row, heat exchange can be carried out between the first heat exchange tube and the second heat exchange tube, the first heat exchange tube and the second heat exchange tube are respectively positioned on the leeward side and the windward side in the outdoor unit of the air conditioner, the first heat exchange tube is communicated between the upper heat exchange row and the indoor unit of the air conditioner, and the second heat exchange tube is communicated between the upper heat exchange row and the enthalpy-increasing air suction port of the compressor.
Under refrigeration working conditions, the compressor sends the refrigerant into the upper heat exchange row for heat exchange, the upper heat exchange row sends part of the refrigerant after heat exchange into the first heat exchange tube and sends the other part of the refrigerant after heat exchange into the second heat exchange tube, the first heat exchange tube sends the refrigerant therein into the indoor unit of the air conditioner for refrigeration, the second heat exchange tube sends the refrigerant therein into the enthalpy-increasing air suction port of the compressor for enthalpy-increasing, the positions of the first heat exchange tube and the second heat exchange tube are arranged, the fan of the air conditioner outdoor unit blows part of cold energy of the refrigerant in the second heat exchange tube to the first heat exchange tube, so that the temperature of the refrigerant flowing in the first heat exchange tube is further reduced, the supercooling degree of the refrigerant flowing in the indoor unit of the air conditioner through the first heat exchange tube is higher, the temperature of the refrigerant in the second heat exchange tube is increased to evaporate to form a gaseous refrigerant after being taken away by part of cold energy, and the gaseous refrigerant is more suitable for being sent into the enthalpy-increasing air suction port of the compressor for enthalpy-increasing of the compressor. Therefore, the air conditioner outdoor unit provided by the utility model does not need to be additionally provided with a subcooler and an enthalpy-increasing pipeline for the compressor.
Under the heating working condition, the compressor directly sends the refrigerant into the air conditioner indoor unit for heating, and the air conditioner indoor unit sends the refrigerant subjected to heat exchange into the first heat exchange tube to heat the first heat exchange tube and the second heat exchange tube for heat exchange with the first heat exchange tube, so that the first heat exchange tube and the second heat exchange tube can be defrosted and the first heat exchange tube and the second heat exchange tube can be prevented from being frozen. Part of the refrigerant entering the first heat exchange tube directly flows into the upper layer heat exchange row for evaporation, and the other part of refrigerant in the first heat exchange tube flows into the second heat exchange tube, and the refrigerant in the second heat exchange tube is evaporated to form a gaseous refrigerant because the second heat exchange tube is heated by heat transmitted by the first heat exchange tube, and then the second heat exchange tube guides the refrigerant into an enthalpy-increasing air suction port of the compressor for enthalpy increase of the compressor, and the refrigerant evaporated by the upper layer heat exchange row flows back to the compressor.
According to the outdoor unit of the air conditioner, a subcooler, a pipeline for increasing enthalpy of the compressor and a heating component for heating the first heat exchange pipe and the second heat exchange pipe are not required to be additionally arranged in the outdoor unit of the air conditioner, so that the cost of the outdoor unit of the air conditioner is lower, the first heat exchange pipe and the second heat exchange pipe which are positioned at the bottom layer in the outdoor heat exchanger are ingeniously utilized to distribute refrigerant, and the effects of increasing the subcooling degree and the enthalpy during refrigeration and preventing the enthalpy increasing pipeline from freezing are achieved during heating by means of heat exchange between the first heat exchange pipe and the second heat exchange pipe.
(2) The air conditioning system provided by the utility model comprises an air conditioning indoor unit and the air conditioning outdoor unit, wherein the air conditioning indoor unit is communicated with the first heat exchange pipe through a second pipeline, and a second throttle valve is arranged on the second pipeline. The air conditioning system has lower cost because the air conditioning outdoor unit does not need to additionally arrange a cooler, an enthalpy increasing pipeline for the compressor and a heating component for heating the first heat exchange tube and the second heat exchange tube.
Drawings
In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a block diagram of an air conditioner outdoor unit according to an embodiment of the present utility model;
fig. 2 is a block diagram of an air conditioning system according to an embodiment of the present utility model under a cooling condition (solid arrows in the drawing point to a refrigerant flow direction, and open arrows in the drawing point to a wind field direction in an air conditioning outdoor unit);
fig. 3 is a block diagram of an air conditioning system according to an embodiment of the present utility model under a heating condition (solid arrows in the drawing point to a refrigerant flow direction, and open arrows in the drawing point to a wind field direction in an air conditioning outdoor unit);
fig. 4 is a flowchart of a control method of an air conditioning system according to an embodiment of the present utility model.
In the figure:
1-an air conditioner outdoor unit; a 2-compressor; 3-an outdoor heat exchanger; 4-upper heat exchange rows; 5-a first heat exchange tube; 51-a first end; 52-a second end; 6-a second heat exchange tube; 61-a third end; 62-fourth ends; 7-an air conditioner indoor unit; 8-a first throttle valve; 9-collecting liquid pipe; 10-capillary tube; 11-knockout; 12-a second throttle valve; 13-a first conduit; 14-a second conduit; 15-a third pipe; a 16-four-way valve; 17-a gas-liquid separator.
Detailed Description
In order to make the objects, technical solutions and advantages of the present utility model more apparent, the technical solutions of the present utility model will be described in detail below. It will be apparent that the described embodiments are only some, but not all, embodiments of the utility model. All other embodiments, based on the examples herein, which are within the scope of the utility model as defined by the claims, will be within the scope of the utility model as defined by the claims.
Example 1:
the present embodiment provides an air-conditioning outdoor unit 1, including an outdoor heat exchanger 3 and a compressor 2 provided with an enthalpy-increasing air intake, the outdoor heat exchanger 3 is provided with an upper heat exchange row 4 and a first heat exchange tube 5 and a second heat exchange tube 6 located below the upper heat exchange row 4, heat exchange can be performed between the first heat exchange tube 5 and the second heat exchange tube 6 so as to facilitate heat exchange, and the first heat exchange tube 5 and the second heat exchange tube 6 are located on a leeward side and a windward side in the air-conditioning outdoor unit 1 respectively, and it is noted that the air-conditioning outdoor unit 1 further includes a fan installed therein, and wind blown by the fan reaches the first heat exchange tube 5 after passing through the second heat exchange tube 6.
The first heat exchange tube 5 is defined as a first end 51 and a second end 52, and the second heat exchange tube 6 is defined as a third end 61 and a fourth end 62.
The first heat exchange tube 5 is communicated between the upper heat exchange row 4 and the air conditioning indoor unit 7, that is, the first end 51 of the first heat exchange tube 5 is communicated with the upper heat exchange row 4, and the second end 52 of the second heat exchange tube 6 is communicated with the air conditioning indoor unit 7, so that under the refrigeration condition, the first heat exchange tube 5 can send part of refrigerant flowing out of the upper heat exchange row 4 into the air conditioning indoor unit 7, and under the heating condition, the first heat exchange tube 5 guides part of refrigerant flowing out of the air conditioning indoor unit 7 into the upper heat exchange row 4, thereby realizing the normal operation of the air conditioning system.
The second heat exchange tube 6 is disposed between the upper heat exchange row 4 and the enthalpy-increasing air intake of the compressor 2, that is, the third end 61 of the second heat exchange tube 6 is connected to the upper heat exchange row 4, and the fourth end 62 of the second heat exchange tube 6 is connected to the enthalpy-increasing air intake of the compressor 2. More preferably, a first throttle valve 8 is further disposed on the first pipe 13 connecting the second heat exchange pipe 6 and the upper heat exchange row 4, and optionally, the first throttle valve 8 is an electronic expansion valve to throttle the refrigerant entering the second heat exchange pipe 6. Thus, the first heat exchange tube 5 and the second heat exchange tube are arranged in parallel connection downstream of the upper heat exchange row 4. Under the refrigeration working condition, the other part of refrigerant flowing out of the upper layer heat exchange discharge 4 flows into the second heat exchange tube 6 through the first pipeline 13, and throttles by the second throttle valve 12, so that the pressure of the refrigerant entering the throttle valve is lower, and under the working condition, the refrigerant entering the second heat exchange tube 6 flows into the enthalpy-increasing air suction port of the compressor 2 through the second heat exchange tube 6 to increase the enthalpy of the compressor 2. In the heating operation, another part of the refrigerant flowing out of the air conditioning indoor unit 7 flows into the second heat exchange tube 6, and the second heat exchange tube 6 guides the part of the refrigerant into the enthalpy-increasing air suction port of the compressor 2 to increase the enthalpy of the compressor 2.
Specifically:
under refrigeration condition, the compressor 2 sends the refrigerant into the upper layer heat exchange row 4 for heat exchange, the upper layer heat exchange row 4 sends part of the refrigerant after heat exchange into the first heat exchange tube 5 and sends the refrigerant after the other part of heat exchange into the second heat exchange tube 6 through the first pipeline 13, the first heat exchange tube 5 sends the refrigerant therein into the air conditioning indoor unit 7 for refrigeration through the second pipeline 14, the second heat exchange tube 6 sends the refrigerant therein into the enthalpy-increasing air suction port of the compressor 2 for enthalpy-increasing the compressor 2, the positions of the first heat exchange tube 5 and the second heat exchange tube 6 are arranged, the fan of the air conditioning outdoor unit 1 blows part of cold energy of the refrigerant in the second heat exchange tube 6 to the first heat exchange tube 5 so as to further reduce the temperature of the refrigerant flowing in the first heat exchange tube 5, so that the supercooling degree of the refrigerant flowing into the air conditioning indoor unit 7 through the first heat exchange tube 5 is larger, the temperature of the refrigerant in the second heat exchange tube 6 is increased after the part of cold energy is taken away to evaporate to form gaseous refrigerant, and the gaseous refrigerant is more suitable for being sent into the compressor 2 for pressure reduction and the enthalpy-increasing 2 and flowing into the second throttle valve 8 for the refrigerant. Therefore, the air conditioner outdoor unit 1 provided by the utility model does not need to be additionally provided with a subcooler and an enthalpy-increasing pipeline for the compressor 2. In this working condition, the refrigerant from the indoor unit 7 flows back to the gas-liquid separator 17 through the third pipe 15, and the gas-liquid separator 17 then introduces the refrigerant into the compressor 2.
In the heating working condition, the compressor 2 directly sends the refrigerant into the air conditioner indoor unit 7 for heating through the third pipeline 15, the air conditioner indoor unit 7 sends the refrigerant after heat exchange into the first heat exchange pipe 5 through the second pipeline 14 for heating the first heat exchange pipe 5 and the second heat exchange pipe 6 for heat exchange with the first heat exchange pipe 5, so that the first heat exchange pipe 5 and the second heat exchange pipe 6 can be defrosted and the first heat exchange pipe 5 and the second heat exchange pipe 6 are prevented from being frozen, and therefore, the air conditioner outdoor unit 1 provided by the utility model does not need to additionally arrange a defrosting/deicing pipeline for heating the second heat exchange pipe 6 with an enthalpy increasing effect. Part of the refrigerant entering the first heat exchange tube 5 directly flows into the upper layer heat exchange row 4 for evaporation, and the other part of the refrigerant in the first heat exchange tube 5 flows into the second heat exchange tube 6 through the first pipeline 13, and as the second heat exchange tube 6 is heated by heat transmitted by the first heat exchange tube 5, the refrigerant in the second heat exchange tube 6 is evaporated to form a gaseous refrigerant, then the second heat exchange tube 6 guides the refrigerant into an enthalpy increasing air suction port of the compressor 2 for enthalpy increasing the compressor 2, and the refrigerant flowing into the second heat exchange tube 6 is throttled and depressurized by the first throttle valve 8 on the first pipeline 13, and the refrigerant evaporated by the upper layer heat exchange row 4 flows back to the compressor 2.
The air conditioner outdoor unit 1 provided by the utility model further comprises a liquid collecting pipe 9, a capillary tube 10 and a liquid separator 11, wherein the liquid collecting pipe 9 is communicated with one end of the compressor 2 and one end of the upper layer heat exchange row 4, specifically, a port of the compressor 2 is connected with a four-way valve 16, the liquid collecting pipe 9 is communicated with the compressor 2 through the four-way valve 16, the capillary tube 10 is communicated with the other end of the upper layer heat exchange row 4 and the liquid separator 11, the capillary tube 10 has the throttling and depressurization effect, so that the refrigerant entering the liquid separator 11 is throttled and depressurized, the first heat exchange pipe 5 and the second heat exchange pipe 6 are communicated with the liquid separator 11, the second heat exchange pipe 6 is communicated with the liquid separator 11 through the first pipeline 13, and the first throttle valve 8 is arranged on the first pipeline 13. The upper heat exchange row 4 in the outdoor heat exchanger 3 has a plurality of upper heat exchange tubes, each of the upper heat exchange tubes is connected to a liquid separator 11 through a capillary tube 10, that is, the number of liquid separators 11 is plural, the liquid separators 11 are connected by connecting pipes, and the first heat exchange tube 5 and the second heat exchange tube 6 are connected to the connecting pipes.
Optionally, fins are disposed on the outer walls of the first heat exchange tube 5 and the second heat exchange tube 6, and the fins on the first heat exchange tube 5 are attached to the fins on the second heat exchange tube 6, so as to increase the heat exchange efficiency between the first heat exchange tube 5 and the second heat exchange tube 6. Alternatively, the first heat exchange tube 5 and the second heat exchange tube 6 are each a serpentine tube, and the first heat exchange tube 5 and the second heat exchange tube 6 are arranged in staggered fashion.
It is easy to understand that the second heat exchange tube 6 in this embodiment is actually an enthalpy increasing tube of the compressor 2. The first heat exchange tube 5 and the second heat exchange tube 6 are actually lower heat exchange rows in the outdoor heat exchanger 3. The air conditioning outdoor unit 1 provided in this embodiment fully utilizes the lower heat exchange row in the inner chamber outer heat exchanger 3 to achieve the effects of increasing the supercooling degree of the refrigerant flowing into the air conditioning indoor unit 7 and increasing the enthalpy of the compressor.
Example 2:
the present embodiment provides an air conditioning system, which includes an air conditioning indoor unit 7 and the air conditioning outdoor unit 1 provided in embodiment 1, where the air conditioning indoor unit 7 is connected to the first heat exchange tube 5 through the second pipe 14, the second pipe 14 is provided with a second throttle valve 12, the air conditioning indoor unit 7 is connected to a gas-liquid separator 17 through a third pipe 15, and the gas-liquid separator 17 is connected to the compressor 2.
Since the air conditioning outdoor unit 1 does not need to additionally provide a cooler, an additional pipeline for increasing the enthalpy of the compressor 2 and a heating assembly for additionally providing heating components for heating the first heat exchange tube 5 and the second heat exchange tube 6, the air conditioning system has lower cost.
Example 3:
the present embodiment also provides a control method for controlling the air conditioning system provided in embodiment 2, the control method including:
the first step: the operation modes of the air conditioning system, such as a cooling mode and a heating mode, are acquired.
And a second step of: and regulating the flow direction of the refrigerant in the air conditioning system according to the operation mode of the air conditioning system. Specifically:
in the cooling mode:
the high-temperature and high-pressure refrigerant is sent into an upper heat exchange row 4 by a compressor 2 to exchange heat, so that a medium-pressure two-phase refrigerant is obtained;
the upper heat exchange row 4 is utilized to throttle and decompress part of medium-pressure two-phase refrigerant through the capillary tube 10 and then send the part of medium-pressure two-phase refrigerant into the first heat exchange tube 5, the upper heat exchange row 4 is utilized to throttle and decompress the other part of medium-pressure two-phase refrigerant through the capillary tube 10 and then send the part of medium-pressure two-phase refrigerant into the second heat exchange tube 6, and the refrigerant is throttled and decompressed further through the first throttle valve 8 on the first pipeline 13 in the process of sending the refrigerant into the second heat exchange tube 6;
blowing air from one side of a second heat exchange tube 6 by using a fan in the air conditioner outdoor unit 1, and taking part of cold energy of medium-pressure two-phase refrigerant in the second heat exchange tube 6 to the first heat exchange tube 5 by using wind power so as to increase the supercooling degree of the refrigerant in the first heat exchange tube 5, and evaporating the medium-pressure two-phase refrigerant losing part of cold energy in the second heat exchange tube 6 to form a gaseous refrigerant;
the refrigerant with increased supercooling degree is sent into the air conditioning indoor unit 7 through the second pipe 14 by the first heat exchange pipe 5 to perform refrigeration, the refrigerant coming out of the air conditioning indoor unit 7 flows into the gas-liquid separator 17 through the third pipe 15 and finally flows back to the compressor 2, and the gaseous refrigerant is sent into the enthalpy-increasing air suction port of the compressor 2 by the second heat exchange pipe 6 to perform enthalpy-increasing on the compressor 2.
In the heating mode:
the high-temperature and high-pressure refrigerant is sent into an air conditioner indoor unit 7 for heating through a third pipeline 15 by utilizing a compressor 2, so as to obtain a condensed refrigerant;
the condensed refrigerant in the air conditioning indoor unit 7 is sent to a second throttle valve 12 by utilizing a second pipeline 14, and the condensed refrigerant is throttled and depressurized by utilizing the second throttle valve 12 to obtain a low-pressure two-phase refrigerant;
the refrigerant in low-pressure two-phase state is sent into the first heat exchange tube 5 by the second pipeline 14 to heat the first heat exchange tube 5 and the second heat exchange tube 6 which exchanges heat with the first heat exchange tube 5;
the first heat exchange tube 5 is used for sending part of the refrigerant in the low-pressure two-phase state to the upper heat exchange row 4 for evaporation, and the first heat exchange tube 5 is used for sending the other part of the refrigerant in the low-pressure two-phase state to the second heat exchange tube 6;
the second heat exchange tube 6 heated by the first heat exchange tube 5 is utilized to heat the low-pressure two-phase refrigerant, so that the low-pressure two-phase refrigerant in the second heat exchange tube 6 is evaporated into a gaseous refrigerant;
the evaporated refrigerant is returned to the compressor 2 by the upper heat exchange row 4, and the gaseous refrigerant is fed to the enthalpy-increasing suction port of the compressor 2 by the second heat exchange tube 6 to increase the enthalpy of the compressor 2.
Under the refrigeration working condition, the cooling capacity transferred to the first heat exchange tube 5 by the second heat exchange tube 6 further reduces the temperature of the refrigerant in the first heat exchange tube 5, so that the supercooling degree of the refrigerant flowing into the air conditioner indoor unit 7 through the first heat exchange tube 5 is higher, and an additional supercooler is not required to be additionally arranged in the outdoor unit, thereby saving the cost.
The second heat exchange tube 6 sends the refrigerant into the supercharging air suction port of the compressor 2 to increase the enthalpy of the compressor 2, and as the second heat exchange tube 6 is a pipeline in the outdoor heat exchanger 3, a pipeline for increasing the enthalpy of the compressor 2 is not required to be additionally arranged in the air conditioner outdoor unit 1, and the cost is further reduced. It will be appreciated that the second heat exchange tube 6 in this embodiment is actually an enthalpy increasing tube of the compressor 2.
In the heating mode, the first heat exchange tube 5 and the second heat exchange tube 6 adjacent thereto are heated by the refrigerant flowing from the air conditioning indoor unit 7 into the first heat exchange tube 5, and therefore, a heating unit for heating the enthalpy increasing pipe is not required to be added to the air conditioning outdoor unit 1, thereby further reducing the cost.
The above description is merely an embodiment of the present utility model, but the scope of the present utility model is not limited thereto, and any person skilled in the art can easily think about changes or substitutions within the technical scope of the present utility model, and it is intended to cover the scope of the present utility model. Therefore, the protection scope of the present utility model shall be subject to the protection scope of the claims.
Claims (7)
1. An outdoor unit of an air conditioner, comprising:
the compressor is provided with an enthalpy-increasing air suction port;
the outdoor heat exchanger is provided with an upper heat exchange row, and a first heat exchange tube and a second heat exchange tube which are positioned below the upper heat exchange row;
the first heat exchange pipe is communicated between the upper heat exchange row and the air conditioner indoor unit;
the second heat exchange tube is communicated and arranged between the upper heat exchange row and the enthalpy-increasing air suction port of the compressor.
2. The outdoor unit of claim 1, further comprising:
and the first throttle valve is arranged on a first pipeline which is communicated with the second heat exchange pipe and the upper heat exchange row.
3. An outdoor unit of claim 2, wherein:
the first throttle valve is an electronic expansion valve.
4. An outdoor unit of claim 2, further comprising:
the liquid collecting pipe is communicated with one ends of the compressor and the upper heat exchange row;
the capillary tube is communicated with the other ends of the knockout and the upper layer heat exchange row;
the first heat exchange tube and the second heat exchange tube are communicated with the liquid separator;
the first throttle valve is arranged on a first pipeline which is communicated with the second heat exchange pipe and the liquid distributor.
5. An outdoor unit of any one of claims 1-4, wherein:
fins are arranged on the outer walls of the first heat exchange tube and the second heat exchange tube, and the fins on the first heat exchange tube are attached to the fins on the second heat exchange tube;
the first heat exchange tube and the second heat exchange tube are respectively positioned on the leeward side and the windward side in the air conditioner outdoor unit.
6. An outdoor unit of any one of claims 1-4, wherein:
the first heat exchange tube and the second heat exchange tube are both coiled tubes, and the first heat exchange tube and the second heat exchange tube are arranged in staggered manner.
7. An air conditioning system, comprising:
an air conditioner indoor unit;
the outdoor unit of any one of claims 1 to 6, wherein the indoor unit is connected to the first heat exchange pipe via a second pipe, and a second throttle valve is disposed on the second pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222837527.2U CN219014477U (en) | 2022-10-26 | 2022-10-26 | Air conditioner outdoor unit and air conditioning system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222837527.2U CN219014477U (en) | 2022-10-26 | 2022-10-26 | Air conditioner outdoor unit and air conditioning system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219014477U true CN219014477U (en) | 2023-05-12 |
Family
ID=86232668
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222837527.2U Active CN219014477U (en) | 2022-10-26 | 2022-10-26 | Air conditioner outdoor unit and air conditioning system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219014477U (en) |
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2022
- 2022-10-26 CN CN202222837527.2U patent/CN219014477U/en active Active
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