CN108592181B - Cabinet type indoor unit and air conditioner - Google Patents
Cabinet type indoor unit and air conditioner Download PDFInfo
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- CN108592181B CN108592181B CN201810237668.6A CN201810237668A CN108592181B CN 108592181 B CN108592181 B CN 108592181B CN 201810237668 A CN201810237668 A CN 201810237668A CN 108592181 B CN108592181 B CN 108592181B
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- 238000010438 heat treatment Methods 0.000 claims abstract description 16
- 239000003507 refrigerant Substances 0.000 description 33
- 230000000694 effects Effects 0.000 description 13
- 238000010586 diagram Methods 0.000 description 6
- 238000004781 supercooling Methods 0.000 description 5
- 238000010792 warming Methods 0.000 description 5
- 238000001816 cooling Methods 0.000 description 4
- 230000009286 beneficial effect Effects 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
- 239000007788 liquid Substances 0.000 description 1
- 239000000463 material Substances 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
- 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
- F24F1/0059—Indoor units, e.g. fan coil units characterised by heat exchangers
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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)
- Physics & Mathematics (AREA)
- Thermal Sciences (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 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 arranged on the fin group, wherein the coil group comprises a plurality of main coils and a plurality of auxiliary coils which are sequentially arranged from bottom to top, and each main coil is correspondingly connected in series with at least one auxiliary coil so as to form a plurality of diversion pipelines on the fin group; and under the heating mode, the cabinet type indoor unit flows from the lower end of each split-flow pipeline to the upper end of each split-flow pipeline.
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. Referring to fig. 1-a of the specification, in the heating state, the refrigerant flows from the back heat exchanger to the top and then flows from the front heat exchanger to the top, so that the refrigerant liquid is easily generated at the lower end of the double-row heat exchanger. Because the temperature of the refrigerant effusion is lower, the heat exchange between the air inlet air flow and the double-row heat exchanger is uneven, so that hot air flow is blown out from the upper end of the air outlet, and the density of the hot air flow is lower and floats upwards; the cold air flow is blown out from the lower end of the air outlet, has high density and subsides downwards, so that a user feels hot and cool at the head of the foot, and the comfortable experience of the user is greatly reduced.
Disclosure of Invention
The invention mainly aims to provide a cabinet type indoor unit, which aims to solve the problem that the conventional indoor unit of an air conditioner is poor in foot warming effect in a heating mode so as to improve comfortable experience of a user.
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 arranged on the fin group, wherein the coil group comprises a plurality of main coils and a plurality of auxiliary coils which are sequentially arranged from bottom to top, and each main coil is correspondingly connected in series with at least one auxiliary coil so as to form a plurality of shunt pipelines on the fin group; and under the heating mode, the cabinet type indoor unit flows from the lower end of each split-flow pipeline to the upper end of each split-flow pipeline.
Preferably, the number of the main coils is three, and the three main coils are a first main coil, a second main coil and a third main coil from bottom to top in sequence; the plurality of secondary coils includes a first secondary coil in series with the first primary coil, a second secondary coil in series with the second primary coil, a third secondary coil in series with the third primary coil, and a fourth secondary coil in series with the second secondary coil.
Preferably, the other end of the fourth auxiliary coil is communicated with the first auxiliary coil and the third auxiliary coil in parallel.
Preferably, the height of the fin groupIs H 0 The total height of the fin group occupied by the main coils is H Total (S) ，H Total (S) ∈[0.2H 0 ，0.4H 0 ]。
Preferably, among the n main coils, the main coil located at the lowest position is a first main coil, and the first main coil occupies the fin group at a height H 1 Any main coil above the first main coil except the uppermost main coil occupies the height H of the fin group 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 width of each heat exchange fin is 10 mm-25 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.
According to the technical scheme, the single-row heat exchanger is arranged in the cabinet type indoor unit, n main coils of the single-row heat exchanger are respectively connected with n auxiliary coils in series in a one-to-one correspondence manner, so that a plurality of split pipelines are formed on the fin group, when the cabinet type indoor unit is used for heating, a refrigerant flows from the lower end of each split pipeline to the upper end of each split pipeline, the lower end of the single-row heat exchanger is a superheating area of the refrigerant, more heat is obtained by air inlet flow, and the formed hot air flow is blown out from the lower end of the air outlet; the upper end of the single-row heat exchanger is a supercooling region of the refrigerant, the air inlet air flow obtains less heat, and the formed cold air flow is blown out from the upper end of the air outlet. Therefore, the cold air flow at the upper layer is settled downwards to downwards press the hot air flow at the lower layer, so that the hot air flow is restrained from upwards floating, the heat loss is reduced, the heat is concentrated in the active area of the human body more, and the effect of cooling the head and the feet according with the comfortable feeling of the human body is achieved.
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.
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-A is a schematic diagram of the air outlet effect of a conventional cabinet indoor unit;
FIG. 1-B is a schematic diagram of the air outlet effect of the cabinet indoor unit of the present invention;
fig. 2 is a schematic structural diagram of an embodiment of a cabinet indoor unit according to the present invention;
FIG. 3 is a schematic diagram of a single heat exchanger of the indoor unit of FIG. 2 exchanging heat with an airflow;
FIG. 4 is a schematic view of the single row heat exchanger of 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 diagram of the refrigerant flow direction in the heating mode of the single row heat exchanger of FIG. 5;
fig. 7 is another structural schematic diagram of the single-row heat exchanger in fig. 5.
Reference numerals illustrate:
| reference numerals | Name of the name | Reference numerals | Name of the name |
| 100' | Conventional cabinet indoor unit | 132b | Second main coil pipe |
| 100 | Cabinet type indoor unit | 135c | Third main coil pipe |
| 110 | Shell body | 133 | Auxiliary coil pipe |
| 120 | Cross flow wind wheel | 133a | First auxiliary coil |
| 130 | Single-row heat exchanger | 133b | Second auxiliary coil pipe |
| 131 | Heat exchange fin | 133c | Third auxiliary coil pipe |
| 132 | Main coil pipe | 133d | Fourth auxiliary coil pipe |
| 132a | First 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.
Referring to fig. 1-B, the present invention provides a cabinet indoor unit 100, which can solve the problem of poor foot warming effect of a conventional air conditioner indoor unit 100' in a heating mode, so as to improve the comfort experience of a user. 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. 2-4, 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 up and down, 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 up and down; the single-row heat exchanger 130 is disposed in the air duct and between the cross-flow wind wheel 120 and the air inlet, and comprises a fin group and a coil group disposed on the fin group, wherein the coil group comprises a plurality of main coils 132 and a plurality of auxiliary coils 133 which are sequentially disposed from bottom to top, and each main coil 132 is serially connected with at least one auxiliary coil 133 in a one-to-one correspondence manner so as to form a plurality of shunt pipelines on the fin group. And under the heating mode, the cabinet type indoor unit flows the refrigerant from the lower end of each split pipeline to the upper end of each split pipeline, namely the refrigerant enters from the lower part and goes 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.
Referring to fig. 2 and 3, the single-row heat exchanger 130 is located 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 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 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 sequentially arranged at intervals. The main coils 132 of the single-row heat exchanger 130 are respectively connected in series with the auxiliary coils 133 in a one-to-one correspondence manner so as to form a plurality of split flow pipelines on the fin group, the lower ends of the split flow pipelines are communicated with the main inlet pipe, and the upper ends of the split flow pipelines are communicated with the main outlet pipe. 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. 4 and 5, the number of the split lines may be two or three, and in this embodiment, the number of the split lines is three, and the three split lines are shown as I, II, and III in fig. 5, respectively. When the cabinet indoor unit 100 is in the heating mode, after the refrigerant enters the main inlet pipe, the refrigerant enters the I, II and III through the main inlet pipe, the refrigerant in each split-flow pipeline flows upwards to the main outlet pipe through the main coil 132 and the auxiliary coil 133 on the split-flow pipeline in sequence, and finally the refrigerant in the three split-flow pipelines flows out from the main outlet pipe in a converging way, so that the refrigerant enters from the lower part to the upper part.
According to the technical scheme, the single-row heat exchanger 130 is arranged in the cabinet type indoor unit 100, n main coils 132 of the single-row heat exchanger are respectively connected with n auxiliary coils 133 in series in a one-to-one correspondence manner, so that a plurality of split pipelines are formed on the fin groups, and therefore under a heating mode of the cabinet type indoor unit 100, a refrigerant enters and exits from the bottom, the lower end of the single-row heat exchanger is a superheating area of the refrigerant, more heat is obtained by air inlet flow, and the formed hot air flow is blown out from the lower end of the air outlet; the upper end of the single-row heat exchanger 100 is a supercooling region of the refrigerant, the air inlet air flow obtains less heat, and the formed cold air flow is blown out from the upper end of the air outlet. Therefore, the cold air flow at the upper layer is settled downwards to downwards press the hot air flow at the lower layer, so that the hot air flow is restrained from upwards floating, the heat loss is reduced, the heat is concentrated in the active area of the human body more, and the effect of cooling the head and the feet according with the comfortable feeling of the human body is achieved.
It should be noted that, in operation, the front evaporator of the conventional cabinet indoor unit 100' 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 indoor unit 100 of the present invention, the single-row heat exchanger 130 reduces the material consumption and the processing amount of the fins and the coil pipes, and greatly reduces the cost compared with the double-row heat exchanger of the conventional cabinet indoor unit 100'.
Referring to fig. 5 and 6, in the present embodiment, the number of the main coils 132 is three, and the three main coils 132 are a first main coil 132a, a second main coil 132b and a third main coil 132c in order from bottom to top; the plurality of secondary coils 133 includes a first secondary coil 133a in series with a first primary coil 132a, a second secondary coil 133b in series with a second primary coil 132b, and a third secondary coil 133c in series with a third primary coil 132 c.
Referring to fig. 6 and 7, in order to ensure that the total tube pass of the second split-flow tube is approximately equal to the tube pass of the remaining split-flow tubes and that the refrigerant can be completely liquefied at the upper end of the second split-flow tube in the heating mode for achieving better heat exchange efficiency, according to the above embodiment, the plurality of auxiliary coils 133 further includes a fourth auxiliary coil 133d, and the lower end of the fourth auxiliary coil 133d is in communication with the second auxiliary coil 133 b.
Specifically, the first main coil 132a is connected in series with the first sub-coil 133a to form a first split line (as shown in fig. 5I), the second main coil 132b is connected in series with the second sub-coil 133b and the fourth sub-coil 133d to form a second split line (as shown in fig. 5 II), and the third main coil 132c is connected in series with the third sub-coil 133c to form a third split line (as shown in fig. 5 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 and the first auxiliary coil 133a on the first split branch, and finally is collected in the main outlet pipe; a further portion passes through the second primary coil 132b, the second secondary coil 133b, the fourth secondary coil 133d on the second branch and finally merges into said main outlet duct; the remainder of the refrigerant flows through the third primary coil 132c and the third secondary coil 133c on the third branch to the main outlet pipe to pool with the refrigerant in the first and second branches.
Referring to fig. 6 and 7, in the present embodiment, when the refrigerant in each of the aforementioned split-flow pipelines is collected in the main outlet pipe, the difference between the temperatures of the refrigerant outlets of the split-flow pipelines is not too large, otherwise, the refrigerants with different temperatures are mixed to exchange heat, so that the heat exchange efficiency is greatly reduced. Thus, the overall pass of the main coil and the auxiliary coil in each of the tap lines should remain substantially equal to the overall pass of the main coil and the auxiliary coil in any of the remaining tap branches to ensure that the refrigerant outlet temperatures of the respective tap lines differ less.
In this embodiment, the fourth auxiliary coil 134 and the third auxiliary coil 133c are both located at the uppermost end of the single-row heat exchanger 130, and the single-row heat exchanger 130 forms a supercooling region of the refrigerant at the upper end portions of the fourth auxiliary coil 134, the third auxiliary coil 133c and the first auxiliary coil 133a, and when the air intake flows through the supercooling region, less heat is obtained, so that a cold air flow with a lower temperature is blown out at the upper end of the air outlet, and the cold air flow is settled down to press the hot air flow below, thereby achieving a better foot warming effect.
In this embodiment, in order to ensure that a superheating area is formed at the lower end of the single-row heat exchanger 130, so that the hot air flow blown out from the lower end of the air outlet is sufficient to achieve a foot warming effect, the fin group preferably has a height H 0 The total height of the fin group occupied by the main coils is H Total (S) ，H Total (S) ∈[0.2H 0 ，0.4H 0 ]For example, 0.25H 0 、0.30H 0 、0.35H 0 Etc. In the heating mode, the lower end position of the single-row heat exchanger 130 forms a superheating area at least provided with a refrigerant, and a two-phase area and a supercooling area of the refrigerant are sequentially formed in the middle of the single-row heat exchanger 130 and above the single-row heat exchanger, so that air subjected to heat exchange of all the part pipe groups obtains different heat, the temperature of the air outlet is distributed in a gradient manner from bottom to top, the temperature of the air outlet is gradually changed from bottom to top, the change amplitude is small, the non-uniformity of heat exchange is improved, the heat exchange efficiency is improved, and the comfort is improved.
Referring to fig. 6 and 7, in the present embodiment, the heights of the n main coils 132 occupying the fins may be substantially the same or different. In order to increase 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 located at the lowest 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 main coils 132, except the uppermost main coil, located above the first main coil 132a occupies the height H of the fin group i ，H i ＝[0.8H 1 ，1.4H 1 ]I is any natural number of 2 and 3 … … n. Namely, the main coil 132 positioned above the first main coil 132a is the second main coil 132b, the third main coil 132c … ith main coil, and the first main coil 132a occupies the fin group at a height H 1 The second main coil 132b, the third main coil 132c … and the ith main coil occupy the height H of the fin group 2 ，H 3 …H i ，H 2 ，H 3 …H i ＝[0.8H 1 ，1.4H 1 ]. Alternatively, in other embodiments, the first main coil 132a and the second main coil 132b and the third main coil 132c … n-th main coils above the first main coil 132a may have the same or slightly different heights, so that the heating effect is achieved by the higher temperature at the lower end of the heat exchanger, and meanwhile, the cooling effect is also better.
Preferably, any one main coil (for example, the second main coil 132 b) located above the first main coil 132a occupies the height of the fin group, which is greater than the height of the fin group occupied by the first main coil 132a, so that the single-row heat exchanger 130 forms a superheating area of the refrigerant at the position where the first main coil 132a is located, and forms a superheating area and a two-phase area of the refrigerant on the second main coil 132b and the third main coil 132c, on one hand, it is ensured that the air inlet air flow forms a hot air flow with a higher temperature after passing through the lower end of the single-row heat exchanger, and forms a milder air flow with a higher temperature after passing through the middle part of the single-row heat exchanger, so as to achieve a better comfort effect; on the other hand, the temperature of the air-out air is distributed in a gradient mode from bottom to top, so that the temperature from bottom to top is gradually changed, the change range is small, the heat exchange non-uniformity is improved, the heat exchange efficiency is improved, and the comfort is improved.
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 circle center corresponding to the 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 circle center angles corresponding to the sector area are 110-180 degrees, for example, 120-130-140-150-160-170 degrees, and the like, so that the range of the single-row heat exchanger 130 surrounding the through-flow wind wheel 120 can be enlarged, the air intake area of the single-row heat exchanger 130 is enlarged, the heat exchange uniformity is ensured, and the single-row heat exchanger 130 is superior to the conventional double-row heat exchanger.
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 distance between any two adjacent heat exchanging fins 131 is, as defined herein, 0.6mm to 2.0mm, and may be, for example, 0.8mm, 1.0mm, 1.2mm, 1.5mm, 1.8mm, or the like. Here, the spacing between any two adjacent heat exchanging fins 131 is preferably 1.0mm to 1.5mm, so that the air inlet flow can smoothly pass through the single-row heat exchanger 130 while ensuring that each heat exchanging fin 131 is fully contacted with the air inlet flow for heat exchange.
Further, in order to ensure that the single-row heat exchanger 100 has a large heat exchange area and that the air flow can pass smoothly, it is preferable that the width of each of the heat exchange fins is 10mm to 25mm, for example, 12mm, 14mm, 16mm, 18mm, 20mm, 22mm, 24mm, or the like. In particular, when the central angle of the sector 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 131 is 18mm to 20mm, the single-row heat exchanger 130 achieves the optimal heat exchange efficiency, and is better than the conventional double-row heat exchanger. 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 (8)
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 is positioned between the cross flow wind wheel and the air inlet, the single-row heat exchanger comprises a fin group and a coil group arranged on the fin group, the coil group comprises a plurality of main coils and a plurality of auxiliary coils which are sequentially arranged from bottom to top, and each main coil is correspondingly connected in series with at least one auxiliary coil so as to form a plurality of shunt pipelines on the fin group;
the cabinet type indoor unit flows from the lower end of each split-flow pipeline to the upper end of each split-flow pipeline in a heating mode;
the fin group comprises a plurality of heat exchange fins which are arranged at intervals, and the interval between any two adjacent heat exchange fins is 0.6 mm-2.0 mm;
the single-row heat exchangers are arranged in a concave arc shape recessed backwards in the width direction of the shell, so that the single-row heat exchangers are semi-surrounding to surround the cross flow wind wheel.
2. The cabinet indoor unit of claim 1, wherein the number of main coils is three, and the three main coils are a first main coil, a second main coil and a third main coil in order from bottom to top; the plurality of secondary coils includes a first secondary coil in series with the first primary coil, a second secondary coil in series with the second primary coil, a third secondary coil in series with the third primary coil, and a fourth secondary coil in series with the second secondary coil.
3. The cabinet indoor unit of claim 2, wherein the other end of the fourth sub-coil is connected in parallel with the other ends of the first sub-coil and the third sub-coil.
4. The cabinet indoor unit of claim 1, wherein the fin group has a height H 0 The total height of the fin group occupied by the main coils is H Total (S) ，H Total (S) ∈[0.2H 0 ，0.4H 0 ]。
5. The cabinet indoor unit of claim 4, wherein a lowermost main coil of the plurality of main coils is a first main coil, and the first main coil occupies a height H of the fin group 1 Any main coil above the first main coil except the uppermost main coil occupies the height H of the fin group i ，H i =[0.8H 1 ，1.4H 1 ]。
6. The cabinet indoor unit according to claim 1, wherein each heat exchanging fin has a width of 10mm to 25mm.
7. The cabinet indoor unit of claim 1, 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 °.
8. An air conditioner comprising the cabinet indoor unit according to any one of claims 1 to 7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810237668.6A CN108592181B (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 |
|---|---|---|---|
| CN201810237668.6A CN108592181B (en) | 2018-03-21 | 2018-03-21 | Cabinet type indoor unit and air conditioner |
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| Publication Number | Publication Date |
|---|---|
| CN108592181A CN108592181A (en) | 2018-09-28 |
| CN108592181B true CN108592181B (en) | 2024-01-23 |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN208011896U (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 |
-
2018
- 2018-03-21 CN CN201810237668.6A patent/CN108592181B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN208011896U (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 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108592181A (en) | 2018-09-28 |
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