CN108413495B - Cabinet type indoor unit and air conditioner - Google Patents
Cabinet type indoor unit and air conditioner Download PDFInfo
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- CN108413495B CN108413495B CN201810237615.4A CN201810237615A CN108413495B CN 108413495 B CN108413495 B CN 108413495B CN 201810237615 A CN201810237615 A CN 201810237615A CN 108413495 B CN108413495 B CN 108413495B
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- 239000003507 refrigerant Substances 0.000 claims abstract description 43
- 238000010438 heat treatment Methods 0.000 claims abstract description 17
- 238000010586 diagram Methods 0.000 description 7
- 238000004781 supercooling Methods 0.000 description 7
- 230000000694 effects Effects 0.000 description 5
- 238000004891 communication Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 230000017525 heat dissipation Effects 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000005057 refrigeration Methods 0.000 description 2
- 238000010792 warming Methods 0.000 description 2
- 230000008094 contradictory effect Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000009434 installation 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
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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
- F24F13/02—Ducting arrangements
- F24F13/06—Outlets for directing or distributing air into rooms or spaces, e.g. ceiling air diffuser
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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
- F24F13/30—Arrangement or mounting of heat-exchangers
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- 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, a cross flow wind wheel and a single-row heat exchanger; the shell is provided with an air inlet, an air outlet and an air channel communicated with the air inlet and the air outlet; the cross flow wind wheel is arranged in the air duct; the single-row heat exchanger is arranged in the air duct and 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 1 A plurality of main coils, and positioned at the n 1 N under the main coil 2 A first auxiliary coil pipe n 1 ≥2，1≤n 2 ＜n 1 The n is 2 One end of each first auxiliary coil is connected with any n in the first auxiliary coil through a cross-over tube 2 After the main coils are respectively connected in series in one-to-one correspondence, the n 2 The other end of each first auxiliary coil pipe is communicated with the rest main coil pipes in parallel. In the heating mode of the cabinet type indoor unit, the refrigerant flows from the n parts 1 The parallel pipeline at the upper end of each main coil pipe flows to the parallel pipeline at the lower end of each main coil pipe.
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 the heating state, in the n-type flow path of the double-row evaporator, the refrigerant flows from the back row heat exchanger from top to bottom, flows from top to bottom through the front row heat exchanger, the temperature of the refrigerant at the outlet of the refrigerant branch at the air inlet side is lower, the temperature of the inlet of the refrigerant branch at the lee side is higher, and the horizontal positions of the inlet and the outlet are slightly 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, and aims to improve heat exchange efficiency and save cost.
In order to achieve the above purpose, the invention provides a cabinet type indoor unit and an air conditioner comprising the cabinet type indoor unit, wherein the cabinet type indoor unit comprises a shell, a cross 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 flue which is 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 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 1 A plurality of main coils, and positioned at the n 1 N under the main coil 2 A first auxiliary coil pipe n 1 ≥2，1≤n 2 ＜n 1 The n is 2 One end of each first auxiliary coil is connected with any n in the first auxiliary coil through a cross-over tube 2 After the main coils are respectively connected in series in one-to-one correspondence, the n 2 The other ends of the first auxiliary coils are communicated with the rest of the main coils in parallel; the cabinet type indoor unit is in heating mode, and the refrigerant flows from the n 1 The parallel pipeline at the upper end of each main coil pipe flows to the parallel pipeline at the lower end of each main coil pipe.
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 except the lowest main coil occupies the height H of the fin group i ，H i ＝[0.6H 1 ，1.4H 1 ]。
Preferably, the coil group further comprises a coil group arranged on the n 2 A second auxiliary coil below the first auxiliary coil, n 2 And the other end of each first auxiliary coil pipe is communicated with the rest of the main coil pipes in parallel and then is communicated with the second auxiliary coil pipes through a cross pipe.
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 one of the first auxiliary coil and/or the second auxiliary coil occupies the height H of the fin group f ，H f ∈[0.1H 1 ，0.6H 1 ]。
Preferably, the second auxiliary coil occupies the height of the fin group, which is smaller than or equal to the height of each first auxiliary coil occupying the fin group.
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 1 ∈[2，6]。
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, wherein n of the coil group is equal to n of the coil group 2 One end of each first auxiliary coil is connected with any n in the coil group through a cross tube 2 The main coils are respectively connected in series in one-to-one correspondence, and the n is that 2 The other end of each first auxiliary coil pipe is communicated with the rest main coil pipes in parallel. Therefore, when the cabinet type indoor unit is in a heating mode, the refrigerant is shunted from the parallel pipeline at the upper end of the coil group to flow downwards, namely, the refrigerant enters from the upper part and exits from the lower part. Therefore, in the heat exchange process, the liquefied refrigerant is properly reduced in the main coil due to the gravity of the refrigerant after being liquefiedAfter the air inlet flow passes through the fins, the refrigerant accumulated liquid is not easy to generate due to continuous flow heat exchange of the refrigerant, and further, the continuously flowing refrigerant and the air inlet flow can exchange heat effectively, so that the heat exchange efficiency of the cabinet indoor unit is greatly improved.
It should be noted that, in operation, the front evaporator of the conventional cabinet indoor unit contributes about 70% of heat exchange amount, the rear evaporator contributes about 30% of heat exchange amount, the rear heat exchanger is not fully utilized, 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 diagram of a single-row heat exchanger of the indoor unit of FIG. 1 exchanging heat with an airflow;
FIG. 3 is a schematic view of a single row heat exchanger of the cabinet indoor unit of FIG. 1;
FIG. 4 is a schematic diagram of the piping in the single-row heat exchanger of FIG. 3;
FIG. 5 is a schematic diagram of the refrigerant flow in the heating mode in the single row heat exchanger of FIG. 4;
FIG. 6 is another schematic diagram of the piping in the single row heat exchanger of FIG. 4;
FIG. 7 is a schematic view of a single row heat exchanger of the indoor unit of FIG. 1;
FIG. 8 is a schematic diagram of the piping in the single row heat exchanger of FIG. 7;
fig. 9 is a schematic diagram of the flow direction of the refrigerant in the heating mode in the single-row heat exchanger of fig. 7.
Reference numerals illustrate:
| reference numerals | Name of the name | Reference numerals | Name of the name |
| 100 | Cabinet type indoor unit | 132a | First main coil pipe |
| 110 | Shell body | 132b | Second main coil pipe |
| 120 | Cross flow wind wheel | 132c | Third main coil pipe |
| 130 | Single-row heat exchanger | 133 | First auxiliary coil |
| 131 | Heat exchange fin | 134 | Second auxiliary coil pipe |
| 132 | Main coil pipe |
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, if directional indications (such as up, down, left, right, front, and rear … …) are included in the embodiments of the present invention, the directional indications are merely used to explain the relative positional relationship, movement conditions, etc. between the components in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indications are correspondingly changed.
In addition, if there is a description of "first", "second", etc. in the embodiments of the present invention, the description of "first", "second", etc. 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 that the conventional indoor unit of an air conditioner has poor foot warming effect in a heating mode so as to improve the comfort 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 above embodiments, the circular cabinet unit is taken as an example for explanation.
Referring to fig. 1-3, the dashed arrows indicate the direction of fluid flow. In the first embodiment of the cabinet indoor unit 100 of the present invention, the cabinet indoor unit 100 includes a housing 110, a cross-flow wind wheel 120 and a single-row heat exchanger 130; the rear side wall of the shell 110 is provided with an air inlet, the front side wall of the shell 110 is provided with an air outlet, the air outlet extends downwards and upwards, and an air channel which is communicated with the air inlet and the air outlet is arranged in the shell 110; the cross flow wind wheel 120 is installed in the air duct and extends downwards and upwards; the single-row heat exchanger 130 is arranged in the air duct and is positioned between the cross flow wind wheel 120 and the air inlet, the single-row heat exchanger 130 comprises a fin group and a coil group, and the coil group comprises n groups which are sequentially arranged on the fin group from top to bottom 1 A plurality of main coils 132, and located at said n 1 N under each main coil 132 2 First auxiliary pipes 133, n 1 ≥2，1≤n 2 ＜n 1 The n is 2 One end of each first auxiliary coil 133 is connected with any n of the above coils through a cross pipe 2 After the main coils 132 are respectively connected in series in one-to-one correspondence, the n 2 The other end of each first secondary coil 133 is in parallel communication with the remaining primary coils 132. In the heating mode, the cabinet indoor unit 100 flows the refrigerant from the parallel pipeline at the upper end of the coil group to the parallel pipeline at the lower end thereof, i.e., the refrigerant goes in and out from the upper part.
Specifically, the cabinet indoor unit 100 is a circular cabinet, and therefore the casing 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 air inlet is arranged on the rear side wall of the shell 110 and extends up and down; the air outlet is disposed on the front side wall of the housing 110, and extends up and down to face the air inlet.
The single row heat exchanger 130 is located between the cross flow rotor 120 and the air intake. When the cabinet indoor unit 100 works, the cross-flow wind wheel 120 rotates to drive the air inlet flow to enter the air duct from the air inlet, the air inlet flow exchanges heat with the single-row heat exchanger 130 in the air duct to form air outlet flow, and the air outlet flow is blown out from the air outlet to the indoor under the driving of the cross-flow wind wheel 120.
Referring to fig. 2 and 3, the fin group of the single-row heat exchanger 130 includes a plurality of heat exchange fins 131 sequentially arranged at intervals. N of single row heat exchanger 130 1 The main coils 132 are arranged in the fin group in sequence from top to bottom, the n 1 The upper ends of the main coils 132 are connected in parallel to the main inlet pipe, n 2 One end of each first auxiliary coil 133 is connected with any n of the above coils through a cross pipe 2 The lower ends of the main coils 132 are respectively connected in series in a one-to-one correspondence manner, n 2 The other end of the first secondary coil 133 is in parallel communication with the remaining primary coils 132 such that the single row heat exchanger 130 has n 1 And a refrigerant tap branch. As for n 1 The specific number of primary coils 132 is not limited, n 1 A natural number greater than or equal to 2, n 1 ∈[2，6]For example 2, 3, 4, 5, etc. 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 each main coil 132, the resistance is too large, and the single heat exchanger 130 may be excessively supercooled only 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, n is preferably 1 ∈[2，4]。
Here, n is 1 ＝3、n 2 For example, =2, the refrigerant is exchanged in a single rowThe flow direction within the heater 130 is illustrated. For ease of explanation, the definition is defined herein: said n 1 Among the three main coils 132, the three main coils 132 are sequentially a first main coil 132a, a second main coil 132b and a third main coil 132c from top to bottom, the first main coil 132a is connected in series with a first auxiliary coil 133 located at the lowest position, the second main coil 132b is connected in series with another first auxiliary coil 133, and the lower ends of the two first auxiliary coils 133 and the lower ends of the first auxiliary coils 133 are connected in parallel to the main outlet pipe. Referring to FIG. 4, at n 1 ＝3、n 2 When=2, the single-row heat exchanger 130 has a total of three refrigerant split branches I, II and III. When the cabinet indoor unit 100 is in the heating mode, after the refrigerant enters the main inlet pipe, part of the refrigerant is split by the main inlet pipe, passes through the first main coil 132a of the I-th split branch, one of the first auxiliary coils 133, and finally is collected in the main outlet pipe; a further portion passes through the first main coil 132a of the II tap branch, the further first auxiliary coil 133 and finally merges into said main outlet duct; the remainder of the refrigerant flows through the second main coil 132c under the branch III to the main outlet pipe to pool with the aforementioned branches I and II. It should be noted that the "total inlet pipe" and the "total outlet pipe" are both with respect to the flow direction of the refrigerant in the heating mode. In the cooling mode, the refrigerant flows in opposite directions in the single-row heat exchanger 130, so the "total inlet pipe" should be actually a total outlet pipe, and the "total outlet pipe" should be actually a total inlet pipe.
Referring to fig. 5, when the cabinet indoor unit 100 is in the heating mode, the refrigerant is introduced into and discharged from the upper side, n of the single heat exchangers 130 1 The main coil 132 is positioned in the superheat zone and/or two-phase zone of the refrigerant, n of the single row heat exchanger 130 2 The first secondary coil 133 is located in a location that is a supercooling region of the refrigerant. The supercooling areas of the branch circuits are arranged at the lower part of the evaporator in a concentrated manner, so that the mutual interference of the cold and hot areas of the branch circuits can be reduced, the uneven heat exchange state of the evaporator is improved, and the heat exchange efficiency is improved.
According to the technical scheme of the invention, a single-row heat exchanger 130 is arranged in the cabinet type indoor unit 100, and the single-row heat exchanger 130 comprises a fin group and a coil group arranged below the fin groupN of the coil group 2 One end of each first auxiliary coil 133 is connected with any n of the coil groups by a cross pipe 2 The main coils 132 are respectively connected in series in one-to-one correspondence, n 2 The other end of each first secondary coil 133 is in parallel communication with the remaining primary coils 132. Referring to fig. 5, when the cabinet indoor unit performs a heating mode, the refrigerant flows downward by being split from the parallel pipeline at the upper end of the coil group, that is, the refrigerant flows in and out from the upper end, and in the heat exchange process, the flow resistance of the liquefied refrigerant in the main coil 132 is properly reduced due to the gravity of the liquefied refrigerant, so that when the air inlet airflow passes through the fins, the refrigerant liquid is not easy to be generated due to continuous flowing heat exchange of the refrigerant, and further, the effective heat exchange of the continuously flowing refrigerant and the air inlet airflow greatly improves the heat exchange efficiency of the cabinet indoor unit.
It should be noted that, in operation, the front evaporator of the conventional cabinet indoor unit contributes about 70% of heat exchange amount, the rear evaporator contributes about 30% of heat exchange amount, and the rear heat exchanger is not fully utilized, which increases the cost. 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.
Referring to fig. 4 and 5, based on the following embodiment, the n 1 The main coils 132 occupy the fins at substantially the same height, but in order to increase the air outlet temperature at the upper end of the air outlet to achieve foot warming effect, the number n of 1 Of the main coils 132, the uppermost main coil is a first main coil 132a, and the first main coil 132a occupies the fin group at a height H 1 Any one of the main coils 132 below the first main coil 132a occupies the height H of the fin group i ，H i ＝[0.6H 1 ，1.4H 1 ]. For example, the main coil 132 above the first main coil 132a is thus defined as the nth main coil of the second and third main coils 132b, 132c … …, which second and third main coils 132b, 132c … … occupy the height of the fin group in that orderCorresponds to H 2 、H 3 …H i Wherein H is 2 、H 3 …H i ＝[0.6H 1 ，1.4H 1 ]. In other embodiments, to achieve the split effect of the refrigeration, each of the first main coils 132a and the second main coils located below the first main coils 132a may have the same or slightly different heights, and the refrigeration also has better split and heat exchange effects.
Referring to fig. 6 and 7, in a second embodiment of the present invention, the coil set further includes a coil set disposed at the n 2 A second secondary coil 134 below the first secondary coil 133, said n 2 The other end of each first auxiliary coil 133 is connected in parallel with the remaining main coils 132 and then connected to the second auxiliary coil 134 via a crossover.
Specifically, the n 2 The lower end of each first secondary coil 133 communicates with the lower end of the second primary coil 132b via a crossover with the upper end of the second secondary coil 134. In the heating mode of the cabinet indoor unit 100, the second auxiliary coil 134 of the single-row heat exchanger 130 is located in a cooling area of the refrigerant, and the refrigerant is first passed through n 1 The main coils 132 and n 2 After exiting the first secondary coil 133, it enters the second secondary coil 134 for heat exchange, where it is further subcooled. The inlet air stream is heat exchanged with each secondary coil 133 and heat exchange fins 131 of the single row heat exchanger 130 to form a slightly cooler air stream.
Therefore, the cabinet indoor unit 100 according to the second embodiment of the invention further separates the supercooling region, so as to further improve the supercooling degree of heating, ensure the heat exchange of the single-row heat exchanger 130, and improve the heat exchange efficiency.
In this embodiment, among the n main coils 132, the main coil 132 located at the uppermost position is a first main coil 132a, and the first main coil 132a occupies the fin group at a height H 1 Any one of the first auxiliary coils 133 occupies the fin group at a height H f ，H f ∈[0.1H 1 ，0.6H 1 ]The method comprises the steps of carrying out a first treatment on the surface of the And/or the second auxiliary coil 134 occupies the fin group at a height H f ，H f ∈[0.1H 1 ，0.6H 1 ]. That is, the first auxiliary coil 133 or the second auxiliary coil 134 occupies the height of the fin group, which is smaller than the height of any one main coil 132 occupying the fin group, and the refrigerant is supercooled at the lower end of the single-row heat exchanger 130, and the supercooling section is shorter, so that a certain degree of heating supercooling is ensured, and the heat dissipation area is not wasted.
Preferably, the second auxiliary coil 134 occupies the height of the fin group, which is smaller than or equal to the height of each first auxiliary coil 133, so that a certain heating supercooling degree is ensured, and the heat dissipation area is not wasted.
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. Compared with the conventional straight-row heat exchanger, the single-row heat exchanger 130 has larger heat exchange area and higher heat exchange efficiency.
In order to ensure the air intake area of the single-row heat exchanger 130, preferably, the center of the circle corresponding to the sector area occupied by the single-row heat exchanger 130 is located at the rotation center of the cross-flow wind wheel 120, and the central angle corresponding to the sector area may be 120 ° to 140 °, for example 125 °, 130 °, 135 °, and the like, which is 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. The space between any two adjacent heat exchanging fins 131 is, as defined herein, 0.6mm to 2.0mm, for example, specifically 0.8mm, 1.0mm, 1.2mm or 1.5mm, etc., and the space between any two adjacent heat exchanging fins 131 is preferably 1.0mm to 1.5mm, for example, 1.2mm, 1.3mm or 1.4mm, so that the air flow of the air intake can smoothly pass through the single row heat exchanger 130 while ensuring sufficient contact heat exchange between each heat exchanging fin 131 and the air flow of the air intake. In particular, when the central angle of the fan-shaped area occupied by the single-row heat exchanger 130 is 120 ° to 130 °, and the interval between any two adjacent heat exchange fins 131 is 0.8mm to 1.5mm, the width of each heat exchange fin is 18mm to 20mm, the single-row heat exchanger 130 achieves the optimal heat exchange efficiency.
The invention also provides an air conditioner, which comprises a cabinet indoor unit, wherein the specific structure of the cabinet indoor unit refers to the embodiment, and as 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 detailed description is omitted.
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, the single-row heat exchanger is arranged in the air duct and positioned between the cross flow wind wheel and the air inlet, the single-row heat exchanger comprises a fin group and a coil group connected with the fin group, and the coil group comprises n 1 A plurality of main coils, and positioned at the n 1 N under the main coil 2 A first auxiliary coil pipe n 1 ≥2，1≤n 2 ＜n 1 The n is 2 One end of each first auxiliary coil is connected with any n in the first auxiliary coil through a cross-over tube 2 After the main coils are respectively connected in series in one-to-one correspondence, the n 2 The other end of each first auxiliary coil pipe is communicated with the rest main coil pipes in parallel, wherein n is as follows 1 ∈[2，4]；
The cabinet type indoor unit is in heating mode, and the refrigerant flows from the n 1 The parallel pipeline at the upper end of each main coil pipe flows to the parallel pipeline at the lower end of each main coil pipe.
2. The cabinet indoor unit of claim 1, wherein n 1 The uppermost main coil is a first main coil, and the first main coil occupies the fin group with the height of H 1 Any main coil below the first main coil except the lowest main coil occupies the height H of the fin group i ，H i =[0.6H 1 ，1.4H 1 ]。
3. The cabinet indoor unit of claim 1, wherein the coil assembly further comprises a coil assembly provided to the n 2 A second auxiliary coil below the first auxiliary coil, n 2 And the other end of each first auxiliary coil pipe is communicated with the rest of the main coil pipes in parallel and then is communicated with the second auxiliary coil pipes through a cross pipe.
4. As claimed in claim 3The cabinet indoor unit is characterized in that n 1 The uppermost main coil is a first main coil, and the first main coil occupies the fin group with the height of H 1 Any one of the first auxiliary coil and/or the second auxiliary coil occupies the height H of the fin group f ，H f ∈[0.1H 1 ，0.6H 1 ]。
5. The cabinet indoor unit of claim 3, wherein the second sub-coil occupies a height of the fin group that is less than or equal to a height of each of the first sub-coils.
6. 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.
7. The cabinet type indoor unit according to any one of claims 1 to 6, wherein the single row heat exchanger is disposed in a concave arc shape recessed rearward in a width direction of the housing such that the single row heat exchanger surrounds the cross flow rotor in a semi-surrounding shape.
8. The indoor unit of claim 7, 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 °.
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 |
|---|---|---|---|
| CN201810237615.4A CN108413495B (en) | 2018-03-21 | 2018-03-21 | Cabinet type indoor unit and air conditioner |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810237615.4A CN108413495B (en) | 2018-03-21 | 2018-03-21 | Cabinet type indoor unit and air conditioner |
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| Publication Number | Publication Date |
|---|---|
| CN108413495A CN108413495A (en) | 2018-08-17 |
| CN108413495B true CN108413495B (en) | 2023-12-26 |
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| CN201810237615.4A Active CN108413495B (en) | 2018-03-21 | 2018-03-21 | Cabinet type indoor unit and air conditioner |
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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 |
| CN208205201U (en) * | 2018-03-21 | 2018-12-07 | 广东美的制冷设备有限公司 | Cabinet type indoor machine and air conditioner |
-
2018
- 2018-03-21 CN CN201810237615.4A patent/CN108413495B/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 |
| CN208205201U (en) * | 2018-03-21 | 2018-12-07 | 广东美的制冷设备有限公司 | Cabinet type indoor machine and air conditioner |
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| Publication number | Publication date |
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| CN108413495A (en) | 2018-08-17 |
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