CN213019934U - Indoor unit of air conditioner - Google Patents
Indoor unit of air conditioner Download PDFInfo
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- CN213019934U CN213019934U CN202021822122.6U CN202021822122U CN213019934U CN 213019934 U CN213019934 U CN 213019934U CN 202021822122 U CN202021822122 U CN 202021822122U CN 213019934 U CN213019934 U CN 213019934U
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Abstract
The utility model provides an indoor unit of air conditioner, include: the heat exchange air duct comprises a shell, a heat exchange air duct and a heat exchange air duct, wherein an air inlet and an air outlet are formed in the shell; the number of the fans is N, N is more than or equal to 2, and the fans are arranged in the heat exchange air channel; the heat exchanger is arranged in the heat exchange air duct and used for exchanging heat with indoor air, the heat exchanger comprises at least two refrigerant flow paths, each refrigerant flow path is provided with a certain flow path length corresponding to the air supply area of each fan, and the flow path length corresponding to each fan accounts for 1/2N- (N +1)/2N of the total length of the refrigerant flow path; when the temperature differentiation is realized by adjusting the rotating speed of the fan, a certain flow path length is set in each refrigerant flow path to correspond to the air supply area of each fan, and the flow path length corresponding to each fan accounts for 1/2N- (N +1)/2N of the total length of the refrigerant flow path, so that the heat exchange condition consistency of each refrigerant flow path is good, the refrigerant temperature consistency of each refrigerant outlet is good, the noise generated when the refrigerant flow paths converge can be avoided or reduced, and the risk of suction liquid impact of the compressor is reduced.
Description
Technical Field
The utility model belongs to the technical field of the air conditioner, especially, relate to an indoor unit of air conditioner.
Background
With the increasing living standard of people, the air conditioning function is not limited to achieve the effects of cooling and heating, but is developed in the directions of accurate control of temperature and humidity, diversification of air supply forms and higher comfort. For realizing the diversification of air supply form, promote user's comfort level, can set up a plurality of fans and one or more heat exchangers that correspond among the air conditioning indoor set, the accessible is adjusted the fan speed and is realized the differentiation of air supply temperature, when being applied to cabinet-type air conditioner heat exchanger, because the different regional amount of wind difference of heat exchanger is great, the heat transfer effect is uneven, easily cause each flow path superheat degree inconsistent, even the relatively poor flow path export of heat transfer is not overheated, easily cause refrigerant noise problem when the multi-flow path converges this moment, if liquid phase content is too high then can increase the risk that the compressor breathes in the liquid and hit.
SUMMERY OF THE UTILITY MODEL
The present invention aims at solving at least one of the technical problems in the related art to a certain extent. For this purpose,
according to an embodiment of the present disclosure, there is provided an air conditioner indoor unit including:
the heat exchanger comprises a shell, a heat exchanger and a heat exchanger, wherein an air inlet and an air outlet are formed on the shell, and the air inlet and the air outlet are communicated to form a heat exchange air channel;
the number of the fans is N, N is more than or equal to 2, and the fans are arranged in the heat exchange air duct;
the heat exchanger is arranged in the heat exchange air duct and used for exchanging heat with indoor air, the heat exchanger comprises at least two refrigerant flow paths, each refrigerant flow path is provided with a certain flow path length corresponding to the air supply area of each fan, and the flow path length corresponding to each fan accounts for 1/2N- (N +1)/2N of the total length of the refrigerant flow path.
When the temperature differentiation is realized by adjusting the rotating speed of the fan, a certain flow path length is set in each refrigerant flow path to correspond to the air supply area of each fan, and the flow path length corresponding to each fan accounts for 1/2N- (N +1)/2N of the total length of the refrigerant flow path, so that the heat exchange condition consistency of each refrigerant flow path is good, the refrigerant temperature consistency of each refrigerant outlet is good, the noise generated when the refrigerant flow paths converge can be avoided or reduced, and the risk of suction liquid impact of the compressor is reduced.
According to the embodiment of the disclosure, in the cooling mode, each refrigerant flow path is provided with the inlet section through which the refrigerant flows upwards, so that the influence of gravity on the flow of the refrigerant can be reduced.
According to the embodiment of the disclosure, in the heating mode, each refrigerant flow path is provided with the outlet section through which the refrigerant flows downwards, so that the influence of gravity on the flow of the refrigerant can be reduced.
According to the embodiment of the disclosure, the heat exchanger is arranged above the bottom plate, the inlet and the outlet of the refrigerant flow path are far away from the bottom end of the heat exchanger, and the influences of condensed water accumulation and air conditioner vibration on the refrigerant inlet and the refrigerant outlet can be avoided.
According to an embodiment of the present disclosure, the fan is a cross-flow fan or an axial fan.
According to the embodiment of the present disclosure, the plurality of fans are disposed up and down in a vertical direction.
According to the embodiment of the disclosure, the heat exchanger comprises fins and a plurality of refrigerant pipes, and the plurality of refrigerant pipes are communicated to form a refrigerant flow path.
According to the embodiment of the disclosure, the refrigerant pipe comprises a heat exchange pipe and a connecting pipe, and two ends of the connecting pipe are connected with the two heat exchange pipes.
According to an embodiment of the present disclosure, the connecting tube is a U-shaped tube or a long span tube.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic layout view of a conventional refrigerant flow path;
fig. 2 is a schematic layout view of a refrigerant flow path of an indoor unit of an air conditioner according to an embodiment of the present disclosure;
fig. 3 is a schematic layout view of upward flow of refrigerant at a refrigerant inlet section in a refrigeration mode according to an embodiment of the disclosure;
fig. 4 is a layout diagram of a conventional refrigerant flow path;
fig. 5 is a schematic layout view of a refrigerant flow path of an indoor unit of an air conditioner according to an embodiment of the present disclosure;
fig. 6 is a schematic layout view of upward flow of refrigerant at a refrigerant inlet section in a refrigeration mode according to an embodiment of the disclosure;
fig. 7 is a schematic layout view of a refrigerant flow path according to an embodiment of the disclosure;
fig. 8 is a schematic layout view of the refrigerant inlet and outlet away from the bottom end of the heat exchanger according to the embodiment of the disclosure.
In the above figures: an air supply area 2; a heat exchanger 4; a refrigerant pipe 42; a heat exchange pipe 421; a refrigerant passage 43; a first refrigerant flow path 431; a second refrigerant passage 432; a third refrigerant passage 433; the fourth refrigerant passage 434; an inlet section 435; an outlet section 436; a refrigerant inlet 437; a refrigerant outlet 438; a fan 5; a first fan 51; a second fan 52.
Detailed Description
The present invention is specifically described below by way of exemplary embodiments. It should be understood, however, that elements, structures and features of one embodiment may be beneficially incorporated in other embodiments without further recitation.
In the present application, an air conditioner performs a refrigeration cycle of the air conditioner by using a compressor, a condenser, an expansion valve, and an evaporator. The refrigeration cycle includes a series of processes involving compression, condensation, expansion, and evaporation, and supplies refrigerant to the air that has been conditioned and heat-exchanged.
The compressor compresses a refrigerant gas in a high-temperature and high-pressure state and discharges the compressed refrigerant gas. The discharged refrigerant gas flows into the condenser. The condenser condenses the compressed refrigerant into a liquid phase, and heat is released to the surrounding environment through the condensation process.
The expansion valve expands the liquid-phase refrigerant in a high-temperature and high-pressure state condensed in the condenser into a low-pressure liquid-phase refrigerant. The evaporator evaporates the refrigerant expanded in the expansion valve and returns the refrigerant gas in a low-temperature and low-pressure state to the compressor. The evaporator can achieve a cooling effect by heat-exchanging with a material to be cooled using latent heat of evaporation of a refrigerant. The air conditioner can adjust the temperature of the indoor space throughout the cycle.
The air conditioner includes an indoor air conditioner and an outdoor air conditioner, the outdoor air conditioner is a part of a refrigeration cycle including a compressor and an outdoor heat exchanger, the indoor air conditioner includes an indoor heat exchanger, and an expansion valve may be provided in the indoor or outdoor unit.
The indoor heat exchanger and the outdoor heat exchanger serve as a condenser or an evaporator. The air conditioner is used as a heater in a heating mode when the indoor heat exchanger is used as a condenser, and as a cooler in a cooling mode when the indoor heat exchanger is used as an evaporator.
The indoor unit of an air conditioner according to an embodiment of the present invention is described with reference to fig. 1 to 8, fig. 1 and 4 are schematic layout views of a conventional refrigerant flow path, arrow directions in fig. 1 to 8 indicate an airflow flowing direction and a refrigerant flowing direction, and the refrigerant flowing directions shown in fig. 1 to 8 are flowing directions of refrigerants in a refrigeration mode.
The utility model provides an indoor set of air conditioning, indoor set of air conditioning can be the cabinet-type air conditioner, and indoor set of air conditioning includes the casing, is formed with air intake and air outlet on the casing, and the air intake forms the heat transfer wind channel with the air outlet intercommunication, and the air outlet generally sets up in the front side, and the air intake generally sets up in the rear side.
It should be noted that the front side is a side facing the user, the side opposite to the front side is a rear side, the air outlet may be further disposed at the upper side or left and right sides, and the air inlet may be further disposed at the front side, upper side or left and right sides.
The air-conditioning indoor unit further comprises a heat exchanger 4 and a fan 5, the heat exchanger 4 is arranged in the heat exchange air channel and used for exchanging heat with indoor air, and the fan 5 is arranged in the heat exchange air channel and used for introducing air from the air inlet, exchanging heat through the heat exchanger and then sending the air out from the air outlet, so that the refrigerating and heating functions are realized.
The indoor unit of the air conditioner can adopt an air blowing type air supply mode or an air suction type air supply mode, wherein the air suction type air supply mode refers to that: the air passes through the heat exchanger, the fan and the air outlet in sequence, and is sucked by negative pressure formed by rotation of the fan, wherein the heat exchanger can be bent at a large angle to meet the required heat exchange area, but is limited by the fan, and the air outlet is generally designed to be circular. The blowing type air supply mode is as follows: the air passes through the fan, the heat exchanger and the air outlet in sequence, the biggest advantage is that the air is dispersed after passing through the heat exchanger, and the air outlet shape and the air supply form can realize diversification.
Specifically, referring to FIGS. 2-3, the number of fans 5 is N, where N ≧ 2, N is a positive integer, and the number of fans can be 2, or 3 or 4, and more. The plurality of fans 5 are vertically arranged, and the fans 5 may be axial flow fans or cross flow fans.
The heat exchanger 4 comprises fins and a plurality of refrigerant pipes 42, the refrigerant pipes 42 are communicated to form a refrigerant flow path 43, the refrigerant pipes 42 comprise heat exchange pipes 421 and connecting pipes, two ends of the connecting pipes are respectively connected with the two heat exchange pipes, the connecting pipes can be U-shaped short pipes and long span pipes, the U-shaped short pipes can be used when the distance between the two heat exchange pipes is short, and the long span pipes can be used when the distance between the two heat exchange pipes is long.
The number of the cooling medium flow paths 43 is at least two, each cooling medium flow path has a certain flow path length corresponding to the air blowing area 2 of each fan, generally, the flow path length of each cooling medium flow path 43 corresponding to the air blowing area of each fan is equal, the number of the fans is N, and the flow path length corresponding to each fan accounts for 1/N of the total length of the cooling medium flow path. Considering the non-uniform distribution of the wind speed flowing through the heat exchanger, the lengths of the flow paths corresponding to the fans can be adjusted, so that the lengths of the flow paths corresponding to each refrigerant flow path 43 and the blowing area of each fan can be different, and the length of the flow path corresponding to each fan accounts for 1/2N- (N +1)/2N of the total length of the refrigerant flow path.
When the temperature differentiation is realized by adjusting the rotating speed of the fan, a certain flow path length is set in each refrigerant flow path to correspond to the air supply area of each fan, and the flow path length corresponding to each fan accounts for 1/2N- (N +1)/2N of the total length of the refrigerant flow path, so that the heat exchange condition consistency of each refrigerant flow path is good, the refrigerant temperature consistency of each refrigerant outlet is good, the noise generated when the refrigerant flow paths converge can be avoided or reduced, and the risk of suction liquid impact of the compressor is reduced.
Specifically, referring to fig. 2 to 3, the indoor unit of the air conditioner may include two fans, that is, the first fan 51 and the second fan 52, and the refrigerant flow path 43 may include two fans, that is, a first refrigerant flow path 431 and a second refrigerant flow path 432, each of the refrigerant flow paths has a section of flow path length corresponding to the air blowing area of each fan, where the flow path length corresponding to the air blowing area of one of the fans may be 1/2 of the entire refrigerant flow path length, and correspondingly, the flow path length corresponding to the air blowing area of the other fan is also 1/2 of the entire refrigerant flow path length. Alternatively, the flow path length of the blowing area corresponding to one fan may be 1/4 of the total length of the cooling medium flow path, and correspondingly, the flow path length of the blowing area corresponding to the other fan may also be 3/4 of the total length of the cooling medium flow path. At this time, if the difference between the rotation speed of the first fan 51 and the rotation speed of the second fan 52 is large, the difference between the superheat degrees of the outlets of the first refrigerant flow path and the second refrigerant flow path is relatively small, so that noise generated when the refrigerant flow paths converge can be avoided or reduced, and the risk of liquid impact of the suction gas of the compressor is reduced.
Referring to fig. 5 to 8, the indoor unit of the air conditioner may further include two fans 5 and four refrigerant flow paths, that is, the refrigerant flow path may further include a third refrigerant flow path 433 and a fourth refrigerant flow path 434, that is, four refrigerant flow paths are provided in total corresponding to the air blowing area ranges of the two fans, and as shown in the figure, since two heat exchange tubes in the same refrigerant flow path are far apart from each other, a long span tube may be used for connection.
The indoor unit of the air conditioner may further include N fans, wherein each of the cooling medium flow paths may have a flow path length of 1/N corresponding to an air blowing area of each fan, or, if the flow path length corresponding to each of the N-1 fans accounts for 1/2N of the total length of the cooling medium flow path, the total length of the flow path corresponding to the N-1 fans accounts for (N-1)/2N of the total length of the cooling medium flow path, and the flow path length corresponding to the other fan accounts for (N +1)/2N of the length of the cooling medium flow path, so that the flow path length corresponding to each fan accounts for 1/2N- (N +1)/2N of the total length of the cooling medium flow path.
Referring to fig. 3 and 6 to 8, each of the refrigerant flow paths 43 includes an inlet section 435 and an outlet section 436, and in consideration of reducing the influence of gravity on the flow of the refrigerant, each of the refrigerant flow paths generally has the inlet section 435 through which the refrigerant flows upward in the cooling mode and has the outlet section 436 through which the refrigerant flows downward in the heating mode.
Referring to fig. 2 and 7-8, each refrigerant flow path 43 includes a refrigerant inlet 437 and a refrigerant outlet 438, the indoor unit of the air conditioner further includes a bottom plate, the heat exchanger is disposed above the bottom plate, and considering that condensed water is accumulated below the heat exchanger and collision is prevented when the indoor unit of the air conditioner vibrates, refrigerant pipes at the inlet and the outlet of the refrigerant flow path should not be too close to the bottom plate, that is, the refrigerant pipes at the inlet and the outlet of the refrigerant flow path are far away from the bottom end of the heat exchanger.
Considering the non-uniform distribution of the wind speed flowing through the heat exchanger, referring to fig. 7 to 8, the lengths of the refrigerant pipes in the refrigerant flow paths may be different, and the number of the heat exchange pipes of each refrigerant flow path may be set according to the wind speed distribution. Specifically, when the number of the fans is two and the number of the cooling medium flow paths is four, the number of the pipes of the fourth cooling medium flow path may be greater than that of the pipes of the first cooling medium flow path.
In the description of the present invention, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are merely for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, are not to be construed as limiting the present invention.
The terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
The above description is only for the specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art can easily think of the changes or substitutions within the technical scope of the present invention, and all should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (9)
1. An indoor unit of an air conditioner, comprising:
the heat exchanger comprises a shell, a heat exchanger and a heat exchanger, wherein an air inlet and an air outlet are formed on the shell, and the air inlet and the air outlet are communicated to form a heat exchange air channel;
the number of the fans is N, N is more than or equal to 2, and the fans are arranged in the heat exchange air duct;
the heat exchanger is arranged in the heat exchange air duct and used for exchanging heat with indoor air, the heat exchanger comprises at least two refrigerant flow paths, each refrigerant flow path is provided with a certain flow path length corresponding to the air supply area of each fan, and the flow path length corresponding to each fan accounts for 1/2N- (N +1)/2N of the total length of the refrigerant flow path.
2. An indoor unit of an air conditioner according to claim 1, wherein each of the refrigerant flow paths has an inlet portion through which the refrigerant flows upward in the cooling mode.
3. An indoor unit of an air conditioner according to claim 1, wherein each of the refrigerant flow paths has an outlet section through which the refrigerant flows downward in the heating mode.
4. An indoor unit of an air conditioner as claimed in claim 1, further comprising a bottom plate, wherein the heat exchanger is disposed above the bottom plate, and an inlet and an outlet of the refrigerant flow path are far from a bottom end of the heat exchanger.
5. An indoor unit of an air conditioner according to claim 1, wherein the fan is a cross-flow fan or an axial-flow fan.
6. An indoor unit of an air conditioner according to claim 1, wherein the plurality of fans are disposed vertically.
7. An indoor unit of an air conditioner according to claim 1, wherein the heat exchanger includes a fin and a plurality of refrigerant pipes, and the plurality of refrigerant pipes are communicated to form a refrigerant flow path.
8. An indoor unit of an air conditioner according to claim 7, wherein the refrigerant pipe includes a heat exchange pipe and a connection pipe, and both ends of the connection pipe are connected to the two heat exchange pipes.
9. An indoor unit of an air conditioner according to claim 7, wherein the connection pipe is a U-shaped pipe or a long cross pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021822122.6U CN213019934U (en) | 2020-08-26 | 2020-08-26 | Indoor unit of air conditioner |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021822122.6U CN213019934U (en) | 2020-08-26 | 2020-08-26 | Indoor unit of air conditioner |
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| CN213019934U true CN213019934U (en) | 2021-04-20 |
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| CN202021822122.6U Active CN213019934U (en) | 2020-08-26 | 2020-08-26 | Indoor unit of air conditioner |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113483406A (en) * | 2021-06-29 | 2021-10-08 | 青岛海尔空调器有限总公司 | Air conditioner indoor unit, air conditioner and control method for air supply of air conditioner in partition mode |
| CN115978669A (en) * | 2022-12-08 | 2023-04-18 | 珠海格力电器股份有限公司 | Refrigeration control system and method |
-
2020
- 2020-08-26 CN CN202021822122.6U patent/CN213019934U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113483406A (en) * | 2021-06-29 | 2021-10-08 | 青岛海尔空调器有限总公司 | Air conditioner indoor unit, air conditioner and control method for air supply of air conditioner in partition mode |
| WO2023273408A1 (en) * | 2021-06-29 | 2023-01-05 | 青岛海尔空调器有限总公司 | Air conditioner indoor unit, air conditioner, and method for controlling partitioned air supply of air conditioner |
| CN115978669A (en) * | 2022-12-08 | 2023-04-18 | 珠海格力电器股份有限公司 | Refrigeration control system and method |
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