CN108361846B - Cabinet type indoor unit and air conditioner - Google Patents
Cabinet type indoor unit and air conditioner Download PDFInfo
- Publication number
- CN108361846B CN108361846B CN201810237670.3A CN201810237670A CN108361846B CN 108361846 B CN108361846 B CN 108361846B CN 201810237670 A CN201810237670 A CN 201810237670A CN 108361846 B CN108361846 B CN 108361846B
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- indoor unit
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- coil
- heat exchanger
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- 238000010438 heat treatment Methods 0.000 claims abstract description 14
- 239000003507 refrigerant Substances 0.000 claims description 45
- 230000000694 effects Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 3
- 230000005484 gravity Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000004781 supercooling Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000005057 refrigeration Methods 0.000 description 2
- 230000008094 contradictory effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000010792 warming Methods 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
- F24F1/0007—Indoor units, e.g. fan coil units
- F24F1/0018—Indoor units, e.g. fan coil units characterised by fans
- F24F1/0025—Cross-flow or tangential fans
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
- F24F1/0007—Indoor units, e.g. fan coil units
- F24F1/0043—Indoor units, e.g. fan coil units characterised by mounting arrangements
- F24F1/005—Indoor units, e.g. fan coil units characterised by mounting arrangements mounted on the floor; standing on the floor
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/20—Casings or covers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/30—Arrangement or mounting of heat-exchangers
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Air Filters, Heat-Exchange Apparatuses, And Housings Of Air-Conditioning Units (AREA)
Abstract
The invention discloses a cabinet type indoor unit and an air conditioner, wherein the cabinet type indoor unit comprises a shell through-flow wind wheel and a single-row heat exchanger. The rear side wall of the shell is provided with an air inlet, the front side wall of the shell is provided with an air outlet, the air outlet extends up and down, and an air channel communicated with the air inlet and the air outlet is arranged in the shell. The cross flow wind wheel is arranged in the air duct and extends up and down. The single-row heat exchanger is arranged in the air duct and is positioned between the cross-flow wind wheel and the air inlet, and comprises a fin group and a coil group connected with the fin group, wherein the coil group comprises n main coils which are sequentially arranged up and down, n is more than or equal to 2, the upper ends of the n main coils are communicated in parallel, and the lower ends of the n main coils are communicated in parallel. In the heating mode, the cabinet indoor unit flows from the parallel pipeline at the upper ends of the n main coils to the parallel pipeline at the lower ends of the n main coils. The technical scheme of the invention improves the heat exchange efficiency of the cabinet indoor unit.
Description
Technical Field
The invention relates to the technical field of air conditioners, in particular to a cabinet type indoor unit and an air conditioner.
Background
The heat exchanger commonly used in the conventional cabinet type indoor unit is a double-row heat exchanger, the double-row heat exchanger comprises a front-row heat exchanger and a back-row heat exchanger, air inlet airflow sequentially blows through the front-row heat exchanger and the back-row heat exchanger to exchange heat, and air outlet airflow is formed after heat exchange and blown out indoors. When the air flow passes through the evaporator to exchange heat, the front-row evaporator exchanges heat well, the rear-row evaporator exchanges heat poorly, the rear-row evaporator cannot be fully utilized, and the cost is increased.
In addition, referring to fig. 9 of the specification, in the conventional cabinet indoor heating state, the refrigerant in the double-row heat exchanger 100' flows from bottom to top through the back-row heat exchanger 110' and then flows from top to bottom through the front-row heat exchanger 110', the temperature of the refrigerant at the outlet of the refrigerant branch at the air inlet side is low, the temperature of the inlet of the refrigerant branch at the lee side is high, and the horizontal position of the inlet and the outlet is not greatly different, so that cold and hot interference is caused, and the heat exchange efficiency is affected.
Disclosure of Invention
The invention mainly aims to provide a cabinet type indoor unit and an air conditioner, which aim to improve heat exchange efficiency and save cost.
In order to achieve the above object, the present invention provides a cabinet indoor unit, comprising:
the shell is characterized in that an air inlet is formed in the rear side wall of the shell, an air outlet is formed in the front side wall of the shell, the air outlet extends up and down, and an air channel which is communicated with the air inlet and the air outlet is formed in the shell;
the cross flow wind wheel is arranged in the air duct and extends up and down; and
the single-row heat exchanger is arranged in the air duct and is positioned between the cross flow wind wheel and the air inlet, and comprises a fin group and a coil group connected with the fin group, wherein the coil group comprises n main coils which are sequentially arranged up and down, n is more than or equal to 2, the upper ends of the n main coils are communicated in parallel, and the lower ends of the n main coils are communicated in parallel;
and under the heating mode of the cabinet type indoor unit, the refrigerant flows from the parallel pipelines at the upper ends of the n main coils to the parallel pipelines at the lower ends of the n main coils.
Preferably, the coil group further comprises an auxiliary coil arranged below the n main coils, and the lower ends of the n main coils are connected in parallel and then communicated with the upper ends of the auxiliary coils.
Preferably, among the n main coils, the main coil located at the uppermost is a first main coil, and the first main coil occupies the fin group at a height H 1 The height of the auxiliary coil occupying the fin group is H f ，H f ∈[0.1H 1 ，0.6H 1 ]。
Preferably, among the n main coils, the main coil located at the uppermost is a first main coil, and the first main coil occupies the fin group at a height H 1 Any main coil below the first main coil occupies the fin group at a height H i ，H i ∈[0.6H 1 ，1.4H 1 ]。
Preferably, the fin group comprises a plurality of heat exchange fins which are arranged at intervals, and the distance between any two adjacent heat exchange fins is 0.6-2.0 mm.
Preferably, the single-row heat exchanger is arranged in a concave arc shape recessed backwards in the width direction of the shell, so that the single-row heat exchanger surrounds the cross flow wind wheel in a semi-surrounding shape.
Preferably, the circle center corresponding to the sector area occupied by the single-row heat exchanger is located at the rotation center of the cross flow wind wheel, and the circle center angle corresponding to the sector area is 110-180 degrees.
Preferably, n.epsilon.2, 6.
Preferably, the cabinet indoor unit is a circular cabinet unit.
The invention also provides an air conditioner, which comprises a cabinet type indoor unit, wherein the cabinet type indoor unit comprises:
the shell is characterized in that an air inlet is formed in the rear side wall of the shell, an air outlet is formed in the front side wall of the shell, the air outlet extends up and down, and an air channel which is communicated with the air inlet and the air outlet is formed in the shell;
the cross flow wind wheel is arranged in the air duct and extends up and down; and
the single-row heat exchanger is arranged in the air duct and is positioned between the cross flow wind wheel and the air inlet, and comprises a fin group and a coil group connected with the fin group, wherein the coil group comprises n main coils which are sequentially arranged up and down, n is more than or equal to 2, the upper ends of the n main coils are communicated in parallel, and the lower ends of the n main coils are communicated in parallel;
and under the heating mode of the cabinet type indoor unit, the refrigerant flows from the parallel pipelines at the upper ends of the n main coils to the parallel pipelines at the lower ends of the n main coils.
According to the technical scheme, the single-row heat exchanger is arranged in the cabinet type indoor unit and comprises a fin group and a coil group arranged on the fin group, n main coils of the coil group are sequentially arranged on the fin group in the up-down direction, the upper ends of the n main coils are communicated in parallel, and the lower ends of the n main coils are communicated in parallel so as to form a multi-path refrigerant flow path in the single-row heat exchanger. When the heating mode is set, the refrigerant flows from the parallel line at the upper end of the coil group to the parallel line at the lower end thereof. Therefore, in the heat exchange process, the flow resistance of the liquefied refrigerant in the main coil is properly reduced under the action of gravity of the liquefied refrigerant after the liquefied refrigerant is liquefied. Furthermore, after the heat exchange gas passes through the fins, the refrigerant is not easy to generate refrigerant effusion due to continuous flow heat exchange of the refrigerant, so that the contact area between the refrigerant and the heat exchange gas is increased indirectly, and the heat exchange efficiency of the cabinet indoor unit is greatly improved.
It is also worth mentioning here that in operation, the front heat exchanger of a conventional heat exchanger contributes about 70% of the heat exchange capacity, the rear heat exchanger contributes about 30% of the heat exchange capacity, the rear heat exchanger is underutilized, and the cost is increased. In the cabinet type indoor unit, compared with the double-row heat exchanger of the conventional cabinet type indoor unit, the single-row heat exchanger reduces the consumable amount and the processing amount of the fins and the coil pipes, and greatly reduces the cost.
Drawings
In order to more clearly illustrate the embodiments of the present invention 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, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to the structures shown in these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic structural diagram of an embodiment of a cabinet indoor unit according to the present invention;
FIG. 2 is a schematic cross-sectional view of a portion of the cabinet indoor unit of the present invention;
fig. 3 is a schematic view of a part of a structure of a single heat exchanger of the cabinet indoor unit in fig. 2;
FIG. 4 is a schematic view of a pipeline in a single-row heat exchanger of the cabinet indoor unit in FIG. 2;
FIG. 5 is a schematic view of a pipeline in a single-row heat exchanger of the indoor unit of FIG. 4;
fig. 6 is a schematic structural view of a single heat exchanger of the cabinet indoor unit of fig. 5;
fig. 7 is a schematic diagram of a pipeline structure of a single-row heat exchanger in another embodiment of the cabinet indoor unit of the invention;
FIG. 8 is a schematic view of a circuit in a single heat exchanger of the indoor unit of FIG. 7;
fig. 9 is a schematic diagram of a prior art double row heat exchanger tube.
Reference numerals illustrate:
| reference numerals | Name of the name | Reference numerals | Name of the name |
| 100' | Existing heat exchanger | 132 | Main coil pipe |
| 100 | Cabinet type indoor unit | 132a | First main coil pipe |
| 110 | Shell body | 132b | Second main coil pipe |
| 120 | Cross flow wind wheel | 133 | Auxiliary coil pipe |
| 130 | Single-row heat exchanger | 134 | Connecting pipe |
| 131 | Heat exchange fin |
The achievement of the objects, functional features and advantages of the present invention will be further described with reference to the accompanying drawings, in conjunction with the embodiments.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
It should be noted that all directional indicators (such as up, down, left, right, front, and rear … …) in the embodiments of the present invention are merely used to explain the relative positional relationship, movement, etc. between the components in a particular posture (as shown in the drawings), and if the particular posture is changed, the directional indicator is changed accordingly.
Furthermore, the description of "first," "second," etc. in this disclosure is for descriptive purposes only and is not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent and not within the scope of protection claimed in the present invention.
The invention provides a cabinet type indoor unit, which can solve the problem of poor heating effect of a conventional cabinet type indoor unit in a heating mode so as to improve comfortable experience of users. It should be noted that, the cabinet indoor unit may be a square cabinet unit or a circular cabinet unit, and in the following embodiments, the circular cabinet unit is taken as an example for explanation.
Referring to fig. 1, 2 and 4, the present invention provides a cabinet indoor unit 100, which includes a housing 110, a cross-flow wind wheel 120, a single-row heat exchanger 130, and the like. Next, the structure of the cabinet indoor unit 100 and the connection relationship between the structures are specifically described, and then the refrigerant flow path of the cabinet is described.
The structure of the cabinet type indoor unit 100 and its connection and positional relationship are described in detail below.
Referring to fig. 1, the cabinet indoor unit 100 is a circular cabinet, so the housing 110 of the cabinet indoor unit 100 is circular. In other embodiments, the cabinet indoor unit 100 is a square cabinet, and the housing 110 is disposed in a square column. In addition, the housing 110 may be provided in an elliptical column shape, and is not particularly limited, and may be designed according to the installation position or the size of the occupied space. The rear sidewall of the housing 110 is provided with an air inlet, and the air inlet extends in an up-down direction; the front side wall of the housing 110 is provided with an air outlet, which also extends up and down and is opposite to the air inlet. Meanwhile, an air duct is formed in the housing 110, and the air duct communicates the air inlet with the air outlet.
A cross flow wind wheel 120 is arranged in the air duct, and a single-row heat exchanger 130 is arranged between the cross flow wind wheel 120 and the air inlet. When the cabinet indoor unit 100 works, the cross-flow wind wheel 120 rotates to drive the air inlet airflow to enter the air duct from the air inlet, the air inlet airflow exchanges heat in the air duct through the single-row heat exchanger 130 to form air outlet airflow, and the air outlet airflow is blown out from the air outlet to the indoor under the drive of the cross-flow wind wheel 120.
Referring to fig. 3 and 4, the fin group of the single-row heat exchanger 130 includes a plurality of heat exchange fins 131 arranged at intervals, n main coils 132 are sequentially arranged on the fin group in an up-down direction, and the upper ends of the n main coils 132 are connected in parallel to a main inlet pipe orifice, and the lower ends of the n main coils 132 are connected in parallel to a main outlet pipe orifice. Thus, in the heating mode, the cabinet indoor unit 100 enters from the main inlet, and the refrigerant flows through the main inlet, splits into each main coil 132, flows down each main coil 132, and merges into the main outlet.
As for the specific number of n main coils 132, there is no limitation, and n is a natural number greater than or equal to 2, for example, 2, 3, 4, 5, 6, or the like. However, the number of the main coils 132 is not too large, otherwise, the tube side of the refrigerant in each main coil 132 is shorter, the heat exchange of the refrigerant is insufficient, and the heat exchange efficiency is reduced; the number of main coils 132 is not too small, otherwise the refrigerant is long in the tube side of each main coil 132, the resistance is too large, and the single-row heat exchanger 130 may be too supercooled at the lower end thereof, and the heat exchange efficiency is lowered. So to ensure adequate heat exchange of the refrigerant within the main coil 132, it is preferable that n e 2, 4.
The specific flow direction of the refrigerant is described in detail below in the heat exchange mode.
Referring to fig. 4, when the cabinet indoor 100 is in the heating mode, refrigerant flows from the compressor to the cabinet indoor and then is split into each main coil 132 through the "main inlet nozzle". In each main coil 132, the refrigerant flows from top to bottom for heat exchange, and after heat exchange, flows out of the heat exchanger through the "main outlet nozzle". Finally, the refrigerant flows to the outdoor unit through a refrigerant pipeline to circulate from the outdoor unit to the compressor.
In the entire flow path of the heating mode, for each main coil 132 on the fin group, after the refrigerant enters each main coil 132 from the main inlet pipe orifice, the gas is condensed into liquid after heat exchange, and flows down along each main coil 132 from the top to the bottom and flows out from the main outlet pipe orifice. It will be readily appreciated that during the heat exchange process, the flow resistance of the liquefied refrigerant in the main coil 132 is suitably reduced by gravity of the refrigerant itself after liquefaction. Further, after the heat exchange gas passes through the fins, the heat exchange is continuously performed by the refrigerant, so that the contact area between the refrigerant and the heat exchange gas is increased indirectly, and the heat exchange efficiency of the cabinet indoor unit 100 is greatly improved.
According to the technical scheme of the invention, the single-row heat exchanger 130 is arranged in the cabinet type indoor unit 100, the single-row heat exchanger 130 comprises a fin group and a coil group arranged on the fin group, n main coils 132 of the coil group are sequentially arranged on the fin group in the up-down direction, the upper ends of the n main coils 132 are communicated in parallel, and the lower ends of the n main coils 132 are communicated in parallel so as to form a multi-path refrigerant flow path in the single-row heat exchanger 130. When the heating mode is set, the refrigerant flows from the parallel line at the upper end of the coil group to the parallel line at the lower end thereof. Therefore, during the heat exchange process, the flow resistance of the liquefied refrigerant in the main coil 132 is appropriately reduced due to the gravity of the refrigerant itself after the liquefaction. Furthermore, after the heat exchange gas passes through the fins, the refrigerant is not easy to generate accumulated liquid due to continuous flow heat exchange of the refrigerant, so that the contact area between the refrigerant and the heat exchange gas is increased indirectly, and the heat exchange efficiency of the cabinet indoor unit 100 is greatly improved.
It is also worth mentioning here that the conventional heat exchanger 100' in operation has a front heat exchanger contributing about 70% of the heat exchange capacity and a rear heat exchanger contributing about 30% of the heat exchange capacity, which is underutilized and adds to the cost as well as to the cost. In the cabinet type indoor unit 100 of the present invention, the single-row heat exchanger 130 is used, so that the material consumption and the processing amount of the fins and the coil are reduced, and the cost is greatly reduced, compared with the double-row heat exchanger 100' of the conventional cabinet type indoor unit.
Referring to fig. 5 and 6, in the above embodiment, the heights of the n main coils 132 occupying the fins may be substantially the same, as wellMay be different. However, in order to ensure the air outlet temperature at the lower end of the air outlet to achieve the foot warming effect, preferably, among the n main coils 132, the main coil 132 positioned at the uppermost is a first main coil 132a, and the first main coil 132a occupies the fin group at a height of H 1 Any one of the primary coils 132 above the first primary coil 132a occupies the height H of the fin set i ，H i ∈[0.6H 1 ，1.4H 1 ]. For example, three main coils 132 are used to describe, the main coil 132 located at the uppermost is a first main coil 132a, the main coil 1321 located below the first main coil 132a is defined as a second main coil 132b, which is a second main coil I and a second main coil II, respectively, and the heights of the second main coil I and the second coil II occupied by the fin group are sequentially corresponding to H 2 And H 3 . Wherein H is 2 And H 3 Is in the range of 0.6H 1 ～1.4H 1 Between, e.g. 0.8H 1 、0.9H 1 、1.0H 1 Or 1.2H 1 Etc.
In this embodiment, in order to achieve the split-flow effect of the refrigeration, each of the first main coils 132a and the second main coils 132b located below the first main coils 132a may have the same or slightly different heights, and have better split-flow and heat exchange effects during the refrigeration.
Referring to fig. 7, in the second embodiment of the present invention, the difference from the first embodiment is that the coil set further includes a sub-coil 133 disposed below the n main coils 132, and the lower ends of the n main coils 132 are connected in parallel and then communicate with the upper ends of the sub-coils 133.
Specifically, the lower ends of the n main coils 132 are connected in parallel to a connection pipe 134, the n main coils 132 are connected to the lower end of the sub-coil 133 through the connection pipe 134, and the upper end of the sub-coil 133 is connected to the main outlet. In the heating mode of the cabinet indoor unit 100, the refrigerant is first split downwards from the main inlet pipe opening into the n main coils 132, at this time, the n main coils 132 are a superheat region and a two-phase region of the refrigerant, the air inlet air flow exchanges heat with the n main coils 132 and fins of the single-disc heater to form a hot air flow, and the hot air flow is blown out from the middle part of the air outlet. After passing through the n main coils 132, the refrigerant is converged into the auxiliary coil 133 through the connecting pipe 134, and is not completely liquefied, and the converged refrigerant is more and the remaining energy is larger. Therefore, the sub coil 133 is provided to exchange heat with the refrigerant, and the remaining heat is fully utilized to improve the heat exchange efficiency of the heat exchanger. Meanwhile, the auxiliary coil 133 is arranged at the lowest end of the heat exchanger, and the supercooling region is also arranged at the lowest end of the heat exchanger independently, so that the cold and heat of each split branch are separated, most of the heat exchange area of the heat exchanger is more uniform, the heating supercooling degree is improved, and the heat exchange efficiency is improved.
Referring to fig. 8, based on the above embodiment, considering that the temperature of the air flow blown out from the lower end of the air outlet is not too low, otherwise the temperature difference between the upper and lower sides is too large, so that the user is easy to feel uncomfortable. Thus, in the present embodiment, among the n main coils 132, the main coil 132 located at the uppermost position is the first main coil 132a, and the first main coil 132a occupies the fin group at a height H 1 The auxiliary plate tube 133 occupies the fin group with the height H f ，H f ∈[0.1H 1 ，0.6H 1 ]For example 0.1H 1 、0.2H 1 、0.3H 1 、0.4H 1 Etc.
Specifically, H f ∈[0.1H 1 ，0.6H 1 ]That is, the height of the fin group occupied by the auxiliary coil 133 is smaller than the height of the fin group occupied by any one of the main coils 132, and the supercooling section of the refrigerant at the lower end of the single-row heat exchanger 130 is shorter, so that the temperature of the air inlet flow passing through the lower end of the single-row heat exchanger is not too low, and the discomfort of a user is not caused.
Referring to fig. 2 and 3, according to any of the above embodiments, since the cabinet indoor unit 100 employs the single-row heat exchanger 130, in this embodiment, in order to ensure that the intake air flow can exchange heat with the single-row heat exchanger 130 sufficiently, so as to improve the heat exchange efficiency, the single-row heat exchanger 130 is disposed in a concave arc shape recessed backward in the width direction of the housing 110, so that the single-row heat exchanger 130 surrounds the cross-flow wind wheel 120 in a semi-surrounding shape.
Specifically, the single-row heat exchanger 130 is disposed between the cross flow wind wheel 120 and the air inlet, and the single-row heat exchanger 130 surrounds the cross flow wind wheel 120 in a semi-surrounding manner from back to front, so that the single-row heat exchanger 130 can be designed to be larger in a smaller space inside the cabinet indoor unit 100, and the heat exchange area of the single-row heat exchanger 130 is effectively increased, thereby being beneficial to improving the heat exchange efficiency.
Referring to fig. 2 and 3, in order to ensure the air intake area of the single-row heat exchanger 130, preferably, the center of a circle corresponding to a sector area occupied by the single-row heat exchanger 130 is located at the rotation center of the through-flow wind wheel 120, and the center angle α corresponding to the sector area may be 110 ° to 180 °, for example 120 °, 130 °, 140 °, 150 °, 160 °, 170 °, and the like, which are not limited herein. With this design, the range of the single-row heat exchanger 130 surrounding the cross flow wind wheel 120 can be increased, the air inlet area of the single-row heat exchanger 130 is increased, and the heat exchange uniformity is ensured.
Referring to fig. 2 and 3, in the present embodiment, the fin group includes a plurality of heat exchange fins 131 arranged at intervals, and the plurality of heat exchange fins 131 are sequentially arranged at intervals around the periphery of the cross-flow wind wheel 120. If the intervals among the heat exchange fins 131 are too large, insufficient contact between the air inlet flow and the heat exchange fins 131 is easily caused, and the heat exchange effect is poor; if the spacing between the heat exchange fins 131 is too small, the heat exchange fins 131 are denser and wind resistance is increased, so that the air inlet flow is difficult to pass through the single-row heat exchanger 130, and the air outlet quantity is greatly reduced. Therefore, the space between any two adjacent heat exchange fins 131131 is defined as 0.6mm to 2.0mm, for example, 0.8mm, 1.0mm, 1.2mm, 1.5mm, or 1.8mm, and preferably 1.0mm to 1.5mm, so that the heat exchange between each heat exchange fin 131 and the intake air flow is ensured, and the intake air flow can smoothly pass through the single-row heat exchanger 130.
The invention also provides an air conditioner, which comprises the cabinet indoor unit 100, wherein the specific structure of the cabinet indoor unit 100 refers to the above embodiment, and because the air conditioner adopts all the technical schemes of all the embodiments, the air conditioner also has all the beneficial effects brought by the technical schemes of the embodiments, and the description is omitted herein.
The foregoing description is only of the preferred embodiments of the present invention and is not intended to limit the scope of the invention, and all equivalent structural changes made by the description of the present invention and the accompanying drawings or direct/indirect application in other related technical fields are included in the scope of the invention.
Claims (9)
1. A cabinet indoor unit, comprising:
the shell is characterized in that an air inlet is formed in the rear side wall of the shell, an air outlet is formed in the front side wall of the shell, the air outlet extends up and down, and an air channel which is communicated with the air inlet and the air outlet is formed in the shell;
the cross flow wind wheel is arranged in the air duct and extends up and down; and
the heat exchanger is a single-row heat exchanger, is arranged in the air duct and is positioned between the cross flow wind wheel and the air inlet, and comprises a fin group and a coil group connected with the fin group, wherein the coil group comprises n main coils which are sequentially arranged up and down, n is more than or equal to 2, the upper ends of the n main coils are communicated in parallel, and the lower ends of the n main coils are communicated in parallel;
in the heating mode, the cabinet type indoor unit flows the refrigerant from the parallel pipelines at the upper ends of the n main coils to the parallel pipelines at the lower ends of the n main coils;
the single-row heat exchangers are arranged in a concave arc shape with a concave backward in the width direction of the shell, so that the single-row heat exchangers surround the cross flow wind wheel in a semi-surrounding shape.
2. The cabinet indoor unit of claim 1, wherein the coil group further comprises a sub coil disposed below the n main coils, and lower ends of the n main coils are connected in parallel and then communicate with upper ends of the sub coils.
3. The cabinet indoor unit of claim 2, wherein the uppermost main coil of the n main coils is the first main coilThe first main coil occupies the fin group with the height H 1 The height of the auxiliary coil occupying the fin group is H f ，H f ∈[0.1H 1 ，0.6H 1 ]。
4. The cabinet indoor unit of claim 1, wherein a main coil located uppermost among the n main coils is a first main coil, and the first main coil occupies a height H of the fin group 1 Any main coil below the first main coil occupies the fin group at a height H i ，H i ∈[0.6H 1 ，1.4 H 1 ]。
5. The cabinet indoor unit of claim 1, wherein the fin group comprises a plurality of heat exchange fins arranged at intervals, and a space between any two adjacent heat exchange fins is 0.6 mm-2.0 mm.
6. A cabinet type indoor unit according to any one of claims 1 to 5, wherein the center of the circle corresponding to the sector area occupied by the single row heat exchanger is located at the rotation center of the cross flow wind wheel, and the center angle corresponding to the sector area is 110 ° to 180 °.
7. A cabinet indoor unit according to any one of claims 1 to 5, wherein n e [2,6].
8. A cabinet indoor unit according to any one of claims 1 to 5, wherein the cabinet indoor unit is a circular cabinet.
9. An air conditioner comprising the cabinet indoor unit according to any one of claims 1 to 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810237670.3A CN108361846B (en) | 2018-03-21 | 2018-03-21 | Cabinet type indoor unit and air conditioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810237670.3A CN108361846B (en) | 2018-03-21 | 2018-03-21 | Cabinet type indoor unit and air conditioner |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108361846A CN108361846A (en) | 2018-08-03 |
| CN108361846B true CN108361846B (en) | 2023-12-12 |
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| CN201810237670.3A Active CN108361846B (en) | 2018-03-21 | 2018-03-21 | Cabinet type indoor unit and air conditioner |
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| CN110486816B (en) * | 2019-08-22 | 2023-01-13 | 青岛海尔空调器有限总公司 | Cabinet type air conditioner indoor unit |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101581545A (en) * | 2009-06-19 | 2009-11-18 | 广东志高空调有限公司 | District cooling type ice-storage tank device |
| CN106678970A (en) * | 2017-01-03 | 2017-05-17 | 美的集团股份有限公司 | Air conditioner cabinet and air distribution control method of air conditioner cabinet |
| CN206919454U (en) * | 2017-04-28 | 2018-01-23 | 青岛海尔空调器有限总公司 | Heat exchanger and air-conditioning device for air-conditioning device |
| CN208011903U (en) * | 2018-03-21 | 2018-10-26 | 广东美的制冷设备有限公司 | Cabinet type indoor machine and air conditioner |
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2018
- 2018-03-21 CN CN201810237670.3A patent/CN108361846B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101581545A (en) * | 2009-06-19 | 2009-11-18 | 广东志高空调有限公司 | District cooling type ice-storage tank device |
| CN106678970A (en) * | 2017-01-03 | 2017-05-17 | 美的集团股份有限公司 | Air conditioner cabinet and air distribution control method of air conditioner cabinet |
| CN206919454U (en) * | 2017-04-28 | 2018-01-23 | 青岛海尔空调器有限总公司 | Heat exchanger and air-conditioning device for air-conditioning device |
| CN208011903U (en) * | 2018-03-21 | 2018-10-26 | 广东美的制冷设备有限公司 | Cabinet type indoor machine and air conditioner |
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| CN108361846A (en) | 2018-08-03 |
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