KR101737365B1 - Air conditioner - Google Patents
Air conditioner Download PDFInfo
- Publication number
- KR101737365B1 KR101737365B1 KR1020160010596A KR20160010596A KR101737365B1 KR 101737365 B1 KR101737365 B1 KR 101737365B1 KR 1020160010596 A KR1020160010596 A KR 1020160010596A KR 20160010596 A KR20160010596 A KR 20160010596A KR 101737365 B1 KR101737365 B1 KR 101737365B1
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- South Korea
- Prior art keywords
- refrigerant
- heat exchanger
- header pipe
- heat
- pipe
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B47/00—Arrangements for preventing or removing deposits or corrosion, not provided for in another subclass
- F25B47/02—Defrosting cycles
- F25B47/022—Defrosting cycles hot gas defrosting
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- F25B41/003—
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- F25B41/04—
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- F25B41/046—
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- F25B41/062—
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
- F28F9/007—Auxiliary supports for elements
- F28F9/013—Auxiliary supports for elements for tubes or tube-assemblies
Abstract
Description
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air conditioner, and more particularly, to an air conditioner in which a plurality of outdoor heat exchangers perform defrost operation and others perform heating operation.
Background Art [0002] Generally, an air conditioner is a device for cooling or heating a room using a refrigeration cycle including a compressor, an outdoor heat exchanger, an expansion mechanism, and an indoor heat exchanger. A radiator for cooling the room, and a radiator for heating the room. And a cooling / heating air conditioner for cooling or heating the room.
And a four-way valve for changing the flow path of the refrigerant compressed by the compressor according to the cooling operation and the heating operation when the air conditioner is composed of the air conditioner and the air conditioner. That is, the refrigerant compressed in the compressor during the cooling operation flows through the four-way valve to the outdoor heat exchanger, and the outdoor heat exchanger serves as the condenser. The refrigerant condensed in the outdoor heat exchanger is expanded in the expansion mechanism, and then flows into the indoor heat exchanger. At this time, the indoor heat exchanger acts as an evaporator, and the refrigerant evaporated in the indoor heat exchanger passes through the four-way valve and flows into the compressor.
On the other hand, the refrigerant compressed in the compressor during the heating operation flows through the four-way valve to the indoor heat exchanger, and the indoor heat exchanger serves as the condenser. The refrigerant condensed in the indoor heat exchanger is expanded in the expansion mechanism, and then flows into the outdoor heat exchanger. At this time, the outdoor heat exchanger acts as an evaporator, and the refrigerant evaporated in the outdoor heat exchanger passes through the four-way valve and flows into the compressor.
In the above-described air conditioner, water is generated on the surface of the heat exchanger serving as an evaporator during operation, and in the case of cooling operation, water is generated on the surface of the outdoor heat exchanger in the case of heating operation on the surface of the indoor heat exchanger. In this case, when the condensed water generated on the surface of the outdoor heat exchanger is frozen at the time of the heating operation, smooth flow of the outdoor air and heat exchange are interrupted and the heating performance is lowered.
Therefore, when the heating operation is stopped during the heating operation and the refrigeration cycle is operated in the reverse cycle (i.e., cooling operation) in order to remove the congested condensed water, the refrigerant of high temperature and high pressure passes through the outdoor heat exchanger, Is melted by the heat of the refrigerant. However, when the defrosting operation is performed in the reverse cycle as described above, there has been a problem that the heating of the room must be stopped.
In order to solve this problem, in Korean Patent Laid-Open Publication No. 10-2009-0000925, a heat exchanger of an outdoor heat exchanger is divided into a plurality of heat exchangers, one of the heat exchangers is driven by an evaporator and the other heat exchanger is operated by a high- Defrosting operation is performed.
However, Korean Laid-Open Publication No. 10-2009-0000925 discloses that since the refrigerant defrosting one heat exchanging portion flows into the discharging end of the other heat exchanging portion, the temperature and pressure of the heat exchanging portion (evaporating) There is a problem that sufficient heat exchange does not occur and the efficiency of the air conditioner is lowered.
Korean Laid-Open Publication No. 10-2009-0000925 discloses that the refrigerant discharged from the heat exchanging part during the heating operation lowers the temperature of the heat exchanging part during the defrosting operation and thus the defrosting is difficult to divide and deflate, and the defrosting cycle becomes shorter and shorter, There is a problem that operation is difficult.
SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems occurring in the prior art, and it is an object of the present invention to provide an air conditioner that can supply heating to a room while performing a defrosting operation.
Another object of the present invention is to provide an air conditioner that can efficiently perform defrosting operation and heating operation of an outdoor heat exchanger having a plurality of heat exchanging units.
The problems of the present invention are not limited to the above-mentioned problems, and other problems not mentioned can be clearly understood by those skilled in the art from the following description.
According to an aspect of the present invention, there is provided an air conditioner including: a compressor for compressing a refrigerant; A hot gas pipe through which a part of the refrigerant compressed in the compressor flows; An indoor heat exchanger for exchanging heat with indoor air while the refrigerant passing through the four-way valve flows; An outdoor expansion mechanism in which the refrigerant heat-exchanged in the indoor heat exchanger is expanded; An outdoor heat exchanger including at least two heat exchangers acting as a condenser during cooling operation and serving as an evaporator during heating operation and exchanging heat with ambient air while passing the refrigerant; And a four-way valve for guiding the refrigerant discharged from the compressor to the outdoor heat exchanger during a cooling operation and guiding the refrigerant discharged to the indoor heat exchanger during a heating operation, wherein the refrigerant discharged from the compressor flows through the hot gas piping The refrigerant which has undergone the partial defrosting operation flows through the outdoor expansion device and is expanded and evaporated while flowing to the other of the two heat exchange portions, And the heating operation is performed.
The details of other embodiments are included in the detailed description and drawings.
The air conditioner of the present invention having the above-described configuration has the following effects.
First, it is possible to continuously supply heating operation to indoor while performing defrost operation of outdoor heat exchanger.
Second, since the heating operation is not stopped during the regular defrosting operation, the heating efficiency of the entire system is increased.
Third, after the defrosting operation is completed, the normal heating operation can be immediately provided without the need for the preheating time of the indoor heat exchanger for performing the heating operation.
Fourthly, there is an advantage that the efficiency of the heating operation and the defrost operation is not lowered when a part of the plurality of heat exchanging parts is defrosting operation and the other part is heating operation.
Fifth, there is an advantage that the flow path of the refrigerant during the cooling operation and the heating operation is variable.
Sixth, there is an advantage of reducing the heat exchange between the refrigerant and the air during the heating operation and maximizing the efficiency by extending the heat exchange between the refrigerant and the air during the cooling operation.
The effects of the present invention are not limited to the effects mentioned above, and other effects not mentioned can be clearly understood by those skilled in the art from the description of the claims.
1 is a view showing a flow of a refrigerant in an outdoor unit when the air conditioner is heated according to the first embodiment of the present invention;
2 is a view showing the flow of refrigerant in the outdoor unit during the partial defrost operation of the first heat exchanger of the first embodiment;
3 is a view showing the flow of refrigerant in the outdoor unit during the partial defrosting operation of the second heat exchanger of the first embodiment;
4 is a view showing the flow of a refrigerant during a cooling operation of the air conditioner of the first embodiment;
5 is a control block diagram of the defrosting operation of the air conditioner of the first embodiment.
6 is a configuration diagram showing the flow of the refrigerant during the cooling operation of the air conditioner of the second embodiment.
Will be apparent from and will be elucidated with reference to the embodiments described hereinafter in detail. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art. To fully disclose the scope of the invention to those skilled in the art, and the invention is only defined by the scope of the claims. Like reference numerals refer to like elements throughout the specification.
The terms spatially relative, "below", "beneath", "lower", "above", "upper" Can be used to easily describe the correlation of components with other components. Spatially relative terms should be understood as terms that include different orientations of components during use or operation in addition to those shown in the drawings. For example, when inverting an element shown in the figures, an element described as "below" or "beneath" of another element may be placed "above" another element . Thus, the exemplary term "below" can include both downward and upward directions. The components can also be oriented in different directions, so that spatially relative terms can be interpreted according to orientation.
The terminology used herein is for the purpose of illustrating embodiments and is not intended to be limiting of the present invention. In the present specification, the singular form includes plural forms unless otherwise specified in the specification. &Quot; comprises "and / or" comprising ", as used herein, unless the recited component, step, and / or step does not exclude the presence or addition of one or more other elements, steps and / I never do that.
Unless defined otherwise, all terms (including technical and scientific terms) used herein may be used in a sense commonly understood by one of ordinary skill in the art to which this invention belongs. Also, commonly used predefined terms are not ideally or excessively interpreted unless explicitly defined otherwise.
In the drawings, the thickness and the size of each component are exaggerated, omitted, or schematically shown for convenience and clarity of explanation. Also, the size and area of each component do not entirely reflect actual size or area.
Hereinafter, the preferred embodiments of the present invention will be described with reference to the accompanying drawings.
FIG. 1 is a configuration diagram illustrating a refrigerant flow in an outdoor unit when the air conditioner according to the first embodiment of the present invention is heated.
The overall configuration of the air conditioner of this embodiment will be described with reference to Figs. 1 and 4. Fig.
Although not shown, the air conditioner of the present embodiment may include a plurality of indoor units and a plurality of outdoor units (OUs). A plurality of indoor units and a plurality of outdoor units are connected by a refrigerant pipe, and a plurality of indoor units are installed at a plurality of places where the user wants to cool and / or heat.
Referring to FIG. 1, the air conditioner of the present embodiment includes
The compressors (11, 13) compress the refrigerant. One of the
The compressors (11, 13) compress the refrigerant introduced into the inflow side into a compression chamber and discharge it to the discharge side. The discharge piping 18 is connected to the discharge side of the
The refrigerant discharged from the discharge side flows to the four-
The four-
The four-
An indoor heat exchanger (not shown) cools or heats the room air by heat exchange between the refrigerant and the room air. Specifically, the refrigerant evaporates during the cooling operation and the room air is cooled, and the refrigerant compressed by the compressors (11, 13) is condensed during the heating operation to heat the room air. In the defrosting operation, the refrigerant passing through the four-
The opening degree of the indoor expansion valve is controlled during the cooling operation to expand the refrigerant, and when the heating operation is performed, the indoor expansion valve is opened to allow the refrigerant to pass therethrough. The indoor expansion valve is provided between the indoor heat exchanger and the outdoor heat exchanger (70, 80).
The indoor expansion valve expands the refrigerant flowing into the indoor heat exchanger during the cooling operation. The indoor expansion valve passes the refrigerant flowing from the indoor heat exchanger during the heating operation and guides the refrigerant to the compressors (11, 13).
The outdoor heat exchangers (70, 80) are disposed in an outdoor unit arranged in an outdoor space, and exchange the refrigerant passing through the outdoor heat exchangers (70, 80) with outdoor air. The
The outdoor heat exchangers (70, 80) are connected to the four-way valve (30) and the outdoor expansion mechanism. The refrigerant compressed by the
The outdoor expansion mechanisms (40, 50) include expansion valves (41, 51) and check valves (43, 53). The refrigerant condensed in the indoor heat exchanger during the heating operation is expanded while passing through the expansion valves (41, 51). The refrigerant passing through the outdoor heat exchangers (70, 80) during the cooling operation passes through the check valves (43, 53) and is expanded in the indoor expansion mechanism (not shown). The refrigerant passing through the outdoor heat exchangers (70, 80) during the cooling operation can pass through the fully opened expansion valves (41, 51).
The gas-
The air conditioner of the embodiment has a plurality of outdoor heat exchangers (70, 80) for reducing the heat exchange between the refrigerant and the air during the heating operation by extending the heat exchange between the refrigerant and the air during the heating operation, Heat exchange portions.
In the air conditioner of the embodiment, the partial defrosting operation is performed while the refrigerant that has passed through the hot gas piping flows to one of the two heat exchanging portions. The refrigerant that has undergone the partial defrosting operation is expanded through the outdoor expansion mechanism, So that the heating operation is performed.
Hereinafter, the structure of the piping and the outdoor heat exchanger (70, 80) in which the refrigerant path is varied in the heating operation and the cooling operation and in which the partial defrost operation can be performed will be described in detail.
The plurality of heat exchanging units include a first heat exchanging unit (70) and a second heat exchanging unit (80) in which a part or all of the refrigerant selectively flows. However, the number of the heat exchange units is not limited to this, and may have various numbers. Hereinafter, for convenience of explanation, the
The heat exchanging units are devices for exchanging heat between the refrigerant flowing inside the heat exchanging units and the outside air. For example, the heat exchanging units include a plurality of refrigerant tubes through which the refrigerant flows and a plurality of heat transfer fins, so that the refrigerant and the air are heat-exchanged.
The heat exchange portions may be disposed along the air flow direction of the outdoor unit. That is, the heat exchange units may be arranged from the lower part to the upper part along the axial direction of the outdoor unit fan.
The refrigerant flowing into the plurality of heat exchanging units during the heating operation is distributed by the first distribution pipe (76) and the second distribution pipe (77).
The
The
The refrigerant passing through the first distribution pipe (76) and the second distribution pipe (77) is regulated in its path by the outdoor expansion mechanism. The outdoor expansion mechanism includes a
The
The second expansion valve (51) is connected to the second heat exchange unit (80) to expand the refrigerant flowing in the indoor heat exchanger and allow the refrigerant flowing in the second heat exchange unit (80) to pass through. Of course, the refrigerant flowing from the second heat exchanging part (80) to the indoor heat exchanger is passed through the second distribution pipe (77), and the refrigerant flowing from the indoor heat exchanger to the second heat exchanging part (80) A
The first expansion valve (41) and the second expansion valve (51) are constituted by an electronic expansion valve.
During the heating operation, the refrigerant flowing out of the plurality of heat exchanging units is recovered to the compressors (11, 13) through the first header pipe (71) and the second header pipe (72). The refrigerant discharged from the
The
The
The
Further, in the embodiment, the refrigerant passes through the plurality of heat exchanging portions in series during the cooling operation and flows through the bypass piping 74, the first
The
The first bypass pipe (74) is provided with a first intermittent valve (75) which is opened and closed to regulate the flow of the refrigerant. The first
The
The
In the hot gas piping, a part of the refrigerant compressed in the compressors (11, 13) flows. Particularly, a part of the high-temperature and high-pressure refrigerant compressed by the
The hot gas piping includes a first hot gas piping (61) and a second hot gas piping (62).
The first hot gas pipe (61) guides the high temperature and high pressure refrigerant discharged from the compressors (11, 13) to the first heat exchanger (70) during the defrosting operation. The first hot gas pipe (61) is connected to the first heat exchanger (70). Specifically, the first hot gas pipe (61) is connected to the first header pipe (71). The first hot gas piping 61 may be branched between the indoor heat exchanger and the four-
The second hot gas piping 62 guides the high temperature and high pressure refrigerant discharged from the
The pressure loss of the refrigerant can be reduced as compared with the case where the refrigerant compressed in the
The embodiment further includes a switching unit so as not to lower the efficiency of the defrosting operation and the heating operation when a part of the plurality of heat exchanging units is in the heating operation and the other part is in the defrosting operation.
The switching unit passes through the first heat exchanging unit (70) and the second heat exchanging unit (80) during the heating operation and guides the evaporated refrigerant to the inflow side of the compressors (11, 13) The refrigerant passed is guided to one of the two heat exchanging parts, and the refrigerant discharged from the other of the two heat exchanging parts is guided to the inflow side of the compressors (11, 13).
The switching unit includes a first switching unit (65) and a second switching unit (66).
The
The
It is preferable that the
The operation of the
Operation of the switching unit during heating operation is as follows.
In the heating operation, the four-
The operation of the switching unit during the partial defrosting operation is as follows. Here, the partial defrosting operation means a state in which one of the plurality of heat exchanging units performs the heating operation and the other operates the defrosting operation.
The
The
The
The
During the partial defrosting operation of the second
Accordingly, in the present invention, a part of the plurality of heat exchanging units performs the defrosting operation, and the remainder performs the heating operation. It is possible to continuously supply heated air to the room while performing the defrosting operation.
Although not shown, the
In this embodiment, it is determined whether the defrosting operation should be performed by measuring the pressure of the refrigerant on the refrigerant inflow side of the compressors (11, 13). Therefore, the gas-
5 is a control block diagram of the defrosting operation of the air conditioner of the first embodiment.
Referring to FIGS. 1 and 5, the air conditioner of the present embodiment further includes a
The
When it is determined that the
As a result, in this embodiment, one of the first
Hereinafter, the flow of the refrigerant will be described for each operating state of the air conditioner of the present invention configured as described above.
The flow of the refrigerant in the heating operation of the air conditioner of the present embodiment will be described with reference to FIG.
During the heating operation, the refrigerant is compressed by the compressors (11, 13) and flows to the four-way valve (30). The
The refrigerant that has passed through the indoor heat exchanger (not shown) passes through an indoor expansion mechanism (not shown) and expands while passing through the
The refrigerant having passed through the first
2 is a configuration diagram showing the flow of refrigerant in the outdoor unit during the partial defrosting operation of the
Referring to Fig. 2, the flow of the refrigerant in the partial defrosting operation of the
In the air conditioner in this embodiment, when the first
The
The flow of the refrigerant during the defrosting operation of the first heat exchanging part (70) is as follows.
Specifically, a part of the refrigerant compressed in the
The refrigerant flowing into the first hot gas pipe (61) passes through the first switching unit (65) and the first header pipe (71), and flows into the first heat exchanging unit (70). The high-temperature and high-pressure refrigerant introduced into the first heat exchanging part (70) removes the frost which is conceived by the first heat exchanging part (70). The refrigerant discharged from the first heat exchanging part (70) is removed from the second distribution pipe (77) through the first distribution pipe (76) and the first expansion valve (41). At this time, the first
The frost that has been frozen in the first heat exchanging part (70) is removed and the discharged refrigerant is mixed with the refrigerant condensed in the indoor heat exchanger in the second distribution pipe (77). The mixed refrigerant is expanded in the second expansion valve (51), flows into the second heat exchange section (80), and evaporated in the second heat exchange section (80).
The refrigerant evaporated in the second
3 is a configuration diagram showing the flow of refrigerant in the outdoor unit during the partial defrosting operation of the second
Referring to Fig. 3, the flow of the refrigerant in the partial defrost operation of the
In the air conditioner in this embodiment, when the second
The
At this time, the second expansion valve (51) is completely opened, and the first expansion valve (41) expands the refrigerant passing through the second expansion valve (51) and the refrigerant condensed in the indoor heat exchanger. Of course, in the partial defrosting operation of the second
The flow of the refrigerant during the defrosting operation of the second heat exchanging unit (80) is as follows.
Part of the refrigerant compressed in the
The refrigerant flowing into the second hot gas piping 62 passes through the
The frost which is frozen in the second heat exchanging part (80) is removed and the discharged refrigerant is mixed with the refrigerant condensed in the indoor heat exchanger in the first distribution pipe (76). The mixed refrigerant is expanded in the first expansion valve (41), flows into the first heat exchange section (70), and evaporated in the first heat exchange section (70).
The refrigerant evaporated in the first
FIG. 4 is a view showing the flow of a refrigerant during a cooling operation of the air conditioner according to the present invention. Hereinafter, the flow of the refrigerant during the cooling operation of the air conditioner of the present embodiment will be described with reference to FIG.
During the cooling operation, the refrigerant is compressed by the compressors (11, 13) and flows to the four-way valve (30). At this time, the
All of the refrigerant compressed in the compressors (11, 13) flows to the four-way valve (30). The refrigerant that has passed through the four-
The refrigerant having passed through the first heat exchanging part (70) and the second heat exchanging part (80) is expanded in an indoor expansion mechanism (not shown). And evaporated while passing through an indoor heat exchanger (not shown). At this time, the indoor air having the temperature raised by the heat exchange with the refrigerant while passing through the indoor heat exchanger, heats the room. The refrigerant having passed through the indoor heat exchanger passes through the four-
6 is a configuration diagram showing the flow of the refrigerant during the cooling operation of the air conditioner of the second embodiment.
The air conditioner of the second embodiment is different from the first embodiment of Fig. 4 in that the
The flow of the refrigerant in the cooling operation of the air conditioner of the second embodiment will be described with reference to Fig.
The refrigerant having passed through the first
At this time, the first
The refrigerant condensed in the second heat exchanging part (80) can be guided to the indoor heat exchanger through the second distribution pipe (77) and the second expansion valve (51). At this time, the
This flow of refrigerant has the advantage of increasing the heat exchange between the refrigerant and the air during the cooling operation.
It will be understood by those skilled in the art that the present invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. It is therefore to be understood that the above-described embodiments are illustrative in all aspects and not restrictive. The scope of the present invention is defined by the appended claims rather than the foregoing detailed description, and all changes or modifications derived from the meaning and scope of the claims and the equivalents thereof are included in the scope of the present invention Should be interpreted.
11, 13: Compressor 14: Gas-liquid separator
15: pressure sensor 16: oil separator
30: Four-way valve 40: First outdoor expansion mechanism
41: first expansion valve 43: first check valve
50: second outdoor expansion mechanism 51: second expansion valve
53: second check valve 70: first heat exchanger
70a: first heat exchanger portion temperature sensor 80: second heat exchanger portion
80a: first heat exchanger temperature sensor 100: outdoor heat exchanger temperature sensor
Claims (15)
A hot gas pipe through which a part of the refrigerant compressed in the compressor flows;
An indoor heat exchanger for exchanging heat with indoor air while refrigerant compressed in the compressor flows;
An outdoor expansion mechanism in which the refrigerant heat-exchanged in the indoor heat exchanger is expanded;
An outdoor heat exchanger including at least two heat exchangers acting as a condenser during cooling operation and serving as an evaporator during heating operation and exchanging heat with ambient air while passing the refrigerant; And
And a four-way valve for guiding the refrigerant discharged from the compressor to the outdoor heat exchanger during a cooling operation and guiding the refrigerant discharged to the indoor heat exchanger during a heating operation,
The refrigerant having passed through the hot gas piping flows into one of the two heat exchanging units and is subjected to the partial defrosting operation,
Wherein the two heat exchanging units include a first heat exchanging unit and a second heat exchanging unit in which a part or all of the refrigerant selectively flows,
The refrigerant that has undergone the partial defrosting operation is expanded while passing through the outdoor expansion mechanism and is evaporated while flowing to the other of the two heat exchange units to perform the heating operation,
The refrigerant compressed in the compressor is condensed in the first heat exchange unit and the refrigerant passing through the first heat exchange unit flows into the second heat exchange unit and is condensed again in the second heat exchange unit,
Wherein the refrigerant condensed in the indoor heat exchanger is branched and guided to the first heat exchanger and the second heat exchanger during the heating operation.
In the hot gas piping,
A first hot gas piping connected to the first heat exchanging unit,
And a second hot gas piping connected to the second heat exchanging unit.
The refrigerant passing through the first heat exchanging unit and the second heat exchanging unit during the heating operation leads the evaporated refrigerant to the inflow side of the compressor, and in the partial defrosting operation, the refrigerant passing through the hot gas piping passes through either of the two heat exchanging units And the refrigerant discharged from the other of the two heat exchange units is guided to the inflow side of the compressor.
Wherein the first hot gas piping and the second hot gas piping are branched between the four-way valve and the compressor.
A first distribution pipe for guiding the refrigerant condensed in the indoor heat exchanger to the first heat exchange unit during a heating operation,
Further comprising a second distribution pipe connected to the first distribution pipe to guide the refrigerant condensed in the indoor heat exchanger to the second heat exchange unit during a heating operation,
The outdoor expansion mechanism includes:
A first expansion valve disposed in the first distribution pipe for regulating opening;
And a second expansion valve disposed in the second distribution pipe to adjust the opening degree thereof.
A first header pipe connected to the first hot gas pipe for guiding the refrigerant passed through the first heat exchanging unit to the compressor during a heating operation,
Further comprising a second header pipe for guiding the refrigerant passing through the second heat exchanging unit to the compressor at the time of heating operation and connected to the second hot gas pipe,
Wherein the first header pipe is connected to the second header pipe.
A first bypass pipe connected to the first distribution pipe to guide the refrigerant to the second header pipe,
Further comprising a first intermittent valve disposed in the first bypass pipe and opened and closed to regulate the flow of the refrigerant.
The refrigerant is prevented from flowing from the first header pipe to the second header pipe during cooling operation,
Further comprising a first check valve for allowing refrigerant to flow from the second header pipe to the first header pipe during a heating operation.
The switching unit includes:
A first switching unit disposed in the first header pipe and connected to the first hot gas pipe,
And a second switching unit disposed in the second header pipe and connected to the second hot gas pipe.
Wherein the first switching unit comprises:
The refrigerant flowing into the first header pipe from the first heat exchanging unit is introduced into the first header gas pipe from the first heat exchanging unit, However,
Wherein the second switching unit comprises:
The refrigerant flowing into the second header pipe from the second heat exchanger is guided to the second header pipe through the second header pipe, An air conditioner that restricts the entry into the piping.
Wherein the first switching unit comprises:
Wherein the refrigerant flowed through the first header pipe and the refrigerant flowing through the first header pipe are guided to the first heat exchanging unit when the first heat exchanging unit is partially defrosted, Restricts the introduction into the heat exchange section,
Wherein the second switching unit comprises:
The refrigerant evaporated in the second heat exchanger is guided to the first header pipe during the partial defrost operation of the first heat exchanger and the refrigerant passing through the second hot gas pipe is restricted from flowing into the second header pipe Air conditioner.
Wherein the first expansion valve is completely opened when the first expansion valve is partially defrosted, the second expansion valve is connected to the first expansion valve, and the air conditioner .
Wherein the first switching unit comprises:
The first header pipe and the second header pipe are connected to each other through the first header pipe and the second header pipe, respectively,
Wherein the second switching unit comprises:
The refrigerant that has passed through the second hot gas piping is guided to the second heat exchanging portion during the partial defrosting operation of the second heat exchanging portion and the refrigerant passing through the second hot gas piping is restricted from flowing into the first header pipe Air conditioner.
Wherein the second expansion valve is completely opened during the partial defrosting operation of the second heat exchanger, and the first expansion valve is connected to the refrigerant passing through the second expansion valve and an air conditioner for expanding the refrigerant condensed in the indoor heat exchanger .
Wherein the first intermittent valve is opened during cooling operation and closed during heating operation and defrost operation.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020160010596A KR101737365B1 (en) | 2016-01-28 | 2016-01-28 | Air conditioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020160010596A KR101737365B1 (en) | 2016-01-28 | 2016-01-28 | Air conditioner |
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| KR101737365B1 true KR101737365B1 (en) | 2017-05-29 |
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| KR1020160010596A KR101737365B1 (en) | 2016-01-28 | 2016-01-28 | Air conditioner |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20190055961A (en) * | 2017-11-16 | 2019-05-24 | 엘지전자 주식회사 | Air conditioner and the method controlling the same |
| WO2020186906A1 (en) * | 2019-03-15 | 2020-09-24 | 宁波奥克斯电气股份有限公司 | Defrosting control method for air conditioner and air conditioner |
| KR102256588B1 (en) * | 2020-01-31 | 2021-05-26 | 주식회사 삼화에이스 | Air conditioning system using heat pump |
| WO2021112470A1 (en) * | 2019-12-03 | 2021-06-10 | Samsung Electronics Co., Ltd. | Air conditioner |
| US11131472B2 (en) | 2018-11-29 | 2021-09-28 | Lg Electronics Inc. | Air conditioner and defrost control method therefor |
| CN113932323A (en) * | 2020-06-29 | 2022-01-14 | 青岛海信日立空调系统有限公司 | Outdoor unit of air conditioner |
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| KR101288745B1 (en) | 2011-10-27 | 2013-07-23 | 엘지전자 주식회사 | Air conditioner |
| KR101319778B1 (en) | 2011-10-27 | 2013-10-17 | 엘지전자 주식회사 | Air conditioner |
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2016
- 2016-01-28 KR KR1020160010596A patent/KR101737365B1/en active IP Right Grant
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| Publication number | Priority date | Publication date | Assignee | Title |
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| KR101288745B1 (en) | 2011-10-27 | 2013-07-23 | 엘지전자 주식회사 | Air conditioner |
| KR101319778B1 (en) | 2011-10-27 | 2013-10-17 | 엘지전자 주식회사 | Air conditioner |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20190055961A (en) * | 2017-11-16 | 2019-05-24 | 엘지전자 주식회사 | Air conditioner and the method controlling the same |
| KR102399237B1 (en) * | 2017-11-16 | 2022-05-19 | 엘지전자 주식회사 | Air conditioner and the method controlling the same |
| US11131472B2 (en) | 2018-11-29 | 2021-09-28 | Lg Electronics Inc. | Air conditioner and defrost control method therefor |
| WO2020186906A1 (en) * | 2019-03-15 | 2020-09-24 | 宁波奥克斯电气股份有限公司 | Defrosting control method for air conditioner and air conditioner |
| WO2021112470A1 (en) * | 2019-12-03 | 2021-06-10 | Samsung Electronics Co., Ltd. | Air conditioner |
| KR102256588B1 (en) * | 2020-01-31 | 2021-05-26 | 주식회사 삼화에이스 | Air conditioning system using heat pump |
| CN113932323A (en) * | 2020-06-29 | 2022-01-14 | 青岛海信日立空调系统有限公司 | Outdoor unit of air conditioner |
| CN113932323B (en) * | 2020-06-29 | 2022-08-30 | 青岛海信日立空调系统有限公司 | Outdoor unit of air conditioner |
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