CN212339449U - Air conditioning unit - Google Patents
Air conditioning unit Download PDFInfo
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- CN212339449U CN212339449U CN202021129191.9U CN202021129191U CN212339449U CN 212339449 U CN212339449 U CN 212339449U CN 202021129191 U CN202021129191 U CN 202021129191U CN 212339449 U CN212339449 U CN 212339449U
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- air
- pipe
- defrosting
- unit
- conditioning unit
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- 238000004378 air conditioning Methods 0.000 title claims abstract description 43
- 238000010257 thawing Methods 0.000 claims abstract description 49
- 238000010438 heat treatment Methods 0.000 claims description 14
- 238000001816 cooling Methods 0.000 claims description 7
- 239000007788 liquid Substances 0.000 abstract description 17
- 239000003507 refrigerant Substances 0.000 abstract description 11
- 238000001704 evaporation Methods 0.000 abstract description 9
- 230000008020 evaporation Effects 0.000 abstract description 9
- 238000000034 method Methods 0.000 description 9
- 230000006835 compression Effects 0.000 description 6
- 238000007906 compression Methods 0.000 description 6
- 238000010521 absorption reaction Methods 0.000 description 2
- 238000007664 blowing Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000005057 refrigeration Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
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- Air Conditioning Control Device (AREA)
Abstract
The application provides an air conditioning unit. The air conditioning unit comprises an inner unit, a fresh air pipe, an exhaust pipe and a defrosting air pipe, wherein the fresh air pipe is connected with the inner unit, and outdoor air can be conveyed into the inner unit through the fresh air pipe. The exhaust pipe is connected with the indoor unit, and air after heat exchange of the indoor unit can be conveyed to the indoor unit through the exhaust pipe. The defrosting air pipe is connected between the fresh air pipe and the exhaust pipe, when the air conditioning unit defrosts, the inner unit refrigerates, the exhaust pipe conveys cold air flow, and the defrosting air pipe conveys the cold air flow conveyed by the exhaust pipe to the fresh air pipe and is discharged outdoors through the fresh air pipe. The technical scheme of the utility model, can not influence indoor user travelling comfort, solve the unable evaporation of interior machine refrigerant simultaneously and form and return liquid and influence compressor life problem, improve compressor operational reliability.
Description
Technical Field
The utility model relates to an air conditioner technical field particularly, relates to an air conditioning unit.
Background
The defrosting control method of the existing air conditioner comprises the following steps: the air conditioner is converted into refrigeration from a heating mode, a high-temperature refrigerant in a condenser of the outdoor unit is defrosted, at the moment, the indoor unit is a low-temperature refrigerant, in order to prevent cold air blown out from influencing the comfort of users, an indoor fan stops running and cannot perform heat exchange and evaporation, so that a large amount of liquid refrigerant enters a vapor-liquid separator and even flows into a compressor to generate liquid compression, and the service life of the compressor is influenced.
SUMMERY OF THE UTILITY MODEL
The embodiment of the utility model provides an air conditioning unit to the technical problem of the compressor liquid compression that the unable evaporation of liquid refrigerant leads to when solving the defrosting that air conditioning unit exists among the prior art.
The embodiment of the application provides an air conditioning unit, includes: an internal machine; the fresh air pipe is connected with the internal machine, and outdoor air can be conveyed into the internal machine through the fresh air pipe; the exhaust pipe is connected with the internal machine, and air after heat exchange of the internal machine can be conveyed to the indoor through the exhaust pipe; the defrosting air pipe is connected between the fresh air pipe and the exhaust pipe, when the air conditioning unit defrosts, the inner unit refrigerates, the exhaust pipe conveys cold air flow, and the defrosting air pipe conveys the cold air flow conveyed by the exhaust pipe to the fresh air pipe and is discharged outdoors through the fresh air pipe.
In one embodiment, the defrosting air pipe is provided with an air valve device, when the air conditioning unit is used for refrigerating or heating, the air valve device closes the defrosting air pipe to be communicated with the exhaust pipe, when the air conditioning unit is used for defrosting, the air valve device closes the exhaust pipe to be communicated with the indoor space, and opens the exhaust pipe to be communicated with the defrosting air pipe.
In one embodiment, the air valve device comprises an air valve and a driving mechanism for driving the air valve to rotate, wherein the air valve comprises a first position for closing the defrosting air pipe and communicating with the exhaust pipe and a second position for closing the exhaust pipe and communicating with the indoor space and opening the exhaust pipe and the defrosting air pipe.
In one embodiment, a fresh air port is formed in the inner machine and is connected with a fresh air pipe, and the fresh air port is also connected with the environment where the inner machine is located.
In one embodiment, an evaporator is provided in the indoor unit, and the evaporator is used for cooling or heating.
In one embodiment, the air conditioning unit is a ducted air conditioning unit and the indoor unit is an indoor unit.
In the above embodiment, when the air conditioning unit defrosts, directly let the interior machine refrigerate to carry the cold air current through the exhaust pipe, just can let the liquid in the interior machine absorb heat completely and evaporate and become the gaseous state, avoid the problem of compressor liquid compression in the follow-up operating mode. Meanwhile, when the cold air flow generated by the internal unit is conveyed through the exhaust pipe, the defrosting air pipe conveys the cold air flow conveyed by the exhaust pipe to the fresh air pipe, and the fresh air pipe is exhausted outdoors, so that the cold air flow is prevented from being conveyed indoors through the exhaust pipe, and the comfort of indoor heating is ensured. Therefore, the technical scheme of the utility model, just can not influence indoor user's travelling comfort, solve the unable evaporation of interior machine refrigerant simultaneously and form and return liquid and influence compressor life problem, improve compressor operational reliability.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification. In the drawings:
fig. 1 is a schematic view of a partial structure of an embodiment of an air conditioning unit according to the present invention;
FIG. 2 is a schematic illustration of the position of movement of the damper of the air conditioning assembly of FIG. 1;
fig. 3 is a schematic flow chart of a control method of an air conditioning unit according to the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail with reference to the following embodiments and accompanying drawings. The exemplary embodiments and descriptions of the present invention are provided to explain the present invention, but not to limit the present invention.
In order to solve the technical problem of compressor liquid compression when the defrosting that exists of air conditioning unit among the prior art, as shown in fig. 1, the utility model discloses an air conditioning unit includes interior machine 10, fresh air pipe 20, exhaust pipe 30 and defrosting tuber pipe 40, and fresh air pipe 20 links to each other with interior machine 10, and outdoor air accessible fresh air pipe 20 carries and gets into interior machine 10. The exhaust duct 30 is connected to the indoor unit 10, and the air after heat exchange of the indoor unit 10 can be delivered to the indoor through the exhaust duct 30. The defrosting air pipe 40 is connected between the fresh air pipe 20 and the exhaust pipe 30, when the air conditioning unit defrosts, the internal unit 10 refrigerates, the exhaust pipe 30 conveys cold air flow, the defrosting air pipe 40 conveys the cold air flow conveyed by the exhaust pipe 30 to the fresh air pipe 20, and the fresh air pipe 20 exhausts the air to the outside.
Use the technical scheme of the utility model, when air conditioning unit defrosts, directly let interior unit 10 refrigerate to carry the cold air current through exhaust pipe 30, just can let the liquid complete heat absorption evaporation in the interior unit 10 become the gaseous state, avoid the problem of compressor liquid compression in the follow-up operating mode. Meanwhile, when the cold airflow generated by the internal unit 10 is conveyed through the exhaust duct 30, the defrosting air duct 40 conveys the cold airflow conveyed by the exhaust duct 30 to the fresh air duct 20, and the cold airflow is exhausted outdoors through the fresh air duct 20, so that the cold airflow is prevented from being conveyed indoors through the exhaust duct 30, and the comfort of indoor heating is ensured. Therefore, the technical scheme of the utility model, just can not influence indoor user's travelling comfort, solve the unable evaporation of interior machine refrigerant simultaneously and form and return liquid and influence compressor life problem, improve compressor operational reliability.
More preferably, in the technical solution of this embodiment, as shown in fig. 1, an air valve device 41 is disposed on the defrosting air duct 40, when the air conditioning unit is used for cooling or heating, the air valve device 41 closes the defrosting air duct 40 and communicates with the exhaust duct 30, the outdoor air can be delivered into the indoor unit 10 through the fresh air duct 20 for cooling or heating, and then the cold air flow or the hot air flow is delivered into the room through the exhaust duct 30. When the air conditioning unit defrosts, the air valve device 41 closes the exhaust duct 30 to communicate with the indoor space, opens the exhaust duct 30 to communicate with the defrosting air duct 40, and the indoor air or the outdoor air exchanges heat with the indoor unit 10 to promote the evaporation of the refrigerant in the indoor unit 10, and then the cold air flow is conveyed to the defrosting air duct 40 through the exhaust duct 30, and finally the cold air flow is conveyed to the fresh air duct 20 by the defrosting air duct 40 to be discharged to the outdoor space.
As shown in fig. 2, in the solution of the present embodiment, the air valve device 41 includes an air valve 411 and a driving mechanism for driving the air valve 411 to rotate. The air valve 411 comprises a first position for closing the defrosting air pipe 40 and the exhaust pipe 30 and a second position for closing the exhaust pipe 30 and the indoor and opening the exhaust pipe 30 and the defrosting air pipe 40. Alternatively, the driving mechanism may be a combination of a motor and a rack and pinion mechanism, or may be a rotating electric cylinder directly.
As shown in fig. 1, in the technical solution of this embodiment, a fresh air port 11 is opened on an inner machine 10, the fresh air port 11 is connected to a fresh air pipe 20, and the fresh air port 11 is further connected to an environment where the inner machine 10 is located. Therefore, when the air conditioning unit defrosts, indoor air or outdoor air can be utilized to exchange heat with the inner unit 10, so that the refrigerant in the inner unit 10 is fully evaporated.
In the technical scheme of this embodiment, an evaporator is arranged in the internal unit 10, and when the air conditioning unit is used for cooling or heating, the evaporator cools or heats air delivered to the room; during defrosting, the evaporator cools indoor air or outdoor air.
The technical scheme of the utility model in, air conditioning unit is tuber pipe machine air conditioning unit, and interior unit 10 is tuber pipe interior unit 10. In other alternative embodiments, the air conditioning unit may also be a fresh air unit or other type of air conditioning unit.
As shown in fig. 3, the present invention further provides a control method of an air conditioning unit, the control method is used for controlling the air conditioning unit, and the control method includes:
in the heating mode, if a defrosting instruction is received, the internal unit 10 performs cooling, the exhaust duct 30 delivers cold air flow, and the defrosting air duct 40 delivers the cold air flow delivered by the exhaust duct 30 to the fresh air duct 20 and exhausts the cold air flow out of the room through the fresh air duct 20; if the defrosting command is not received, the indoor unit 10 heats up, and the exhaust duct 30 delivers hot air to the indoor.
Use the technical scheme of the utility model, when defrosting under the heating mode, directly let interior unit 10 refrigerate to carry the cold air current through exhaust pipe 30, just can let the liquid complete heat absorption evaporation in interior unit 10 become the gaseous state, avoid the problem of compressor liquid compression in the follow-up operating mode. Meanwhile, when the cold airflow generated by the internal unit 10 is conveyed through the exhaust duct 30, the defrosting air duct 40 conveys the cold airflow conveyed by the exhaust duct 30 to the fresh air duct 20, and the cold airflow is exhausted outdoors through the fresh air duct 20, so that the cold airflow is prevented from being conveyed indoors through the exhaust duct 30, and the comfort of indoor heating is ensured. When the heating mode is normal, the indoor unit 10 heats, and the exhaust duct 30 delivers hot air to the indoor. Therefore, the technical scheme of the utility model, just can not influence indoor user's travelling comfort, solve the unable evaporation of interior machine refrigerant simultaneously and form and return liquid and influence compressor life problem, improve compressor operational reliability.
Alternatively, based on the air valve device 41 described above. The control method further comprises the following steps: if a defrosting instruction is received, controlling the driving mechanism to drive the air valve 411 to rotate to a second position; if the defrosting command is not received, the driving mechanism is controlled to drive the air valve 411 to rotate to the first position.
As a preferred implementation manner, in the technical solution of this embodiment, the control method further includes: after defrosting is finished, detecting the temperature value of the evaporator of the inner machine 10; if the temperature value is larger than the preset value, the driving mechanism is controlled to drive the air valve 411 to rotate to the first position. Therefore, the air after heat exchange can be prevented from being conveyed to the indoor through the exhaust pipe 30 when the temperature of the evaporator is low, and the influence of cold air on the comfort level of a user is avoided. More preferably, the control method further includes: after defrosting is finished, the temperature value of the evaporator of the inner unit 10 is continuously detected for a predetermined time period. Therefore, when the integral temperature of the evaporator is higher, hot air flow is conveyed indoors, and the comfort degree of a user is improved.
The specific implementation scheme is as follows: when the air conditioner heats the operation and sends the defrosting instruction, control actuating mechanism drive blast gate 411 and rotate to the second position, the fan of interior unit 10 lasts the operation and does not shut down, the cold air current that interior unit 10 produced when carrying through exhaust pipe 30, let the cold air current that defrosting tuber pipe 40 carried exhaust pipe 30 transport for fresh air duct 20, it is outdoor through fresh air duct 20 discharge, avoided cold wind to influence user's comfort level, shorten the time of defrosting, solve simultaneously that the indoor set refrigerant can't evaporate to form the problem that the life-span of compressor is influenced to the back liquid. When the air conditioner sends out a defrosting exiting instruction, the temperature of the coil of the evaporator of the indoor unit 10 starts to be detected, and when the temperature of the coil is detected to be more than or equal to 30 ℃ continuously for 30 seconds, the cold air blowing phenomenon caused by too low temperature of the coil after defrosting is finished can be prevented, and the driving mechanism is controlled to drive the air valve 411 to rotate to the first position.
It should be noted that the technical scheme of the utility model is applicable to all non-direct-blowing air conditioners, and this method also is applicable to the too fast problem of pressure rising in the twinkling of an eye that "prevent cold wind" probably caused in the fixed frequency machine heat-up start stage.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not intended to limit the present invention, and it will be apparent to those skilled in the art that various modifications and variations can be made in the embodiments of the present invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (6)
1. An air conditioning assembly, comprising:
an inner machine (10);
the fresh air pipe (20) is connected with the internal machine (10), and outdoor air can be conveyed into the internal machine (10) through the fresh air pipe (20);
the exhaust pipe (30) is connected with the internal unit (10), and air after heat exchange of the internal unit (10) can be conveyed to the indoor through the exhaust pipe (30);
defrosting tuber pipe (40) are connected fresh air pipe (20) with between exhaust pipe (30) during air conditioning unit defrosts, indoor set (10) refrigerate, exhaust pipe (30) carry the cold air current, defrosting tuber pipe (40) will the cold air current that exhaust pipe (30) carried is carried and is given fresh air pipe (20), through fresh air pipe (20) discharge is outdoor.
2. The air conditioning unit according to claim 1, wherein an air valve device (41) is disposed on the defrosting air pipe (40), when the air conditioning unit is used for cooling or heating, the air valve device (41) closes the defrosting air pipe (40) and the exhaust duct (30) to communicate, when the air conditioning unit is used for defrosting, the air valve device (41) closes the exhaust duct (30) and the indoor to communicate, and opens the exhaust duct (30) and the defrosting air pipe (40) to communicate.
3. Air conditioning unit according to claim 2, characterized in that said air valve means (41) comprises an air valve (411) and a driving mechanism for driving said air valve (411) to rotate, said air valve (411) comprising a first position for closing said defrosting duct (40) in communication with said exhaust duct (30) and a second position for closing said exhaust duct (30) in communication with said room and opening said exhaust duct (30) in communication with said defrosting duct (40).
4. The air conditioning unit according to claim 1, wherein a fresh air inlet (11) is provided on the inner unit (10), the fresh air inlet (11) is connected to the fresh air duct (20), and the fresh air inlet (11) is further connected to an environment where the inner unit (10) is located.
5. Air conditioning unit according to claim 1, characterized in that an evaporator is provided in the inner unit (10), said evaporator being used for cooling or heating.
6. Air conditioning unit according to claim 1, characterized in that the air conditioning unit is a ducted air conditioning unit and the indoor unit (10) is an air indoor unit (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021129191.9U CN212339449U (en) | 2020-06-17 | 2020-06-17 | Air conditioning unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021129191.9U CN212339449U (en) | 2020-06-17 | 2020-06-17 | Air conditioning unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212339449U true CN212339449U (en) | 2021-01-12 |
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ID=74077816
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021129191.9U Active CN212339449U (en) | 2020-06-17 | 2020-06-17 | Air conditioning unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212339449U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111678206A (en) * | 2020-06-17 | 2020-09-18 | 珠海格力电器股份有限公司 | Air conditioning unit and control method thereof |
-
2020
- 2020-06-17 CN CN202021129191.9U patent/CN212339449U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111678206A (en) * | 2020-06-17 | 2020-09-18 | 珠海格力电器股份有限公司 | Air conditioning unit and control method thereof |
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