CN108443962B - Heat exchanger for annular air conditioner indoor unit and annular air conditioner indoor unit - Google Patents
Heat exchanger for annular air conditioner indoor unit and annular air conditioner indoor unit Download PDFInfo
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- CN108443962B CN108443962B CN201810136777.9A CN201810136777A CN108443962B CN 108443962 B CN108443962 B CN 108443962B CN 201810136777 A CN201810136777 A CN 201810136777A CN 108443962 B CN108443962 B CN 108443962B
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- 239000003507 refrigerant Substances 0.000 claims abstract description 78
- 230000000149 penetrating effect Effects 0.000 claims abstract description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 158
- 150000002500 ions Chemical class 0.000 description 10
- 230000000694 effects Effects 0.000 description 7
- 238000004378 air conditioning Methods 0.000 description 6
- 238000010438 heat treatment Methods 0.000 description 5
- 230000001965 increasing effect Effects 0.000 description 5
- 230000009471 action Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 230000013011 mating Effects 0.000 description 4
- 238000000746 purification Methods 0.000 description 4
- 230000005484 gravity Effects 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- 238000001816 cooling Methods 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 230000005684 electric field Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 230000001737 promoting effect Effects 0.000 description 2
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000010926 purge Methods 0.000 description 1
- 238000011403 purification operation Methods 0.000 description 1
- 238000005057 refrigeration Methods 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 230000001954 sterilising effect Effects 0.000 description 1
- 238000004659 sterilization and disinfection Methods 0.000 description 1
- 230000000007 visual effect Effects 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
- F24F13/30—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)
- Devices For Blowing Cold Air, Devices For Blowing Warm Air, And Means For Preventing Water Condensation In Air Conditioning Units (AREA)
Abstract
The invention relates to a heat exchanger for an indoor unit of an annular air conditioner and the indoor unit of the annular air conditioner. The heat exchanger comprises a refrigerant pipe for circulating a refrigerant and a plurality of heat exchange fins penetrating through the refrigerant pipe. The heat exchanger is an annular heat exchanger or an arc-shaped heat exchanger, the contour line of the refrigerant pipe is an annular curve or a first arc-shaped curve, and the refrigerant pipe is spirally or reciprocally extended to the refrigerant outlet end along the circumferential direction of the annular curve or the first arc-shaped curve from the refrigerant inlet end. Each heat exchange fin is a sheet fin extending along the radial direction of the annular curve or the first arc curve. The annular air conditioner indoor unit comprises an annular casing, the heat exchanger and the airflow driving device. The annular casing is provided with an air inlet grille which is positioned at the rear side and distributed along the circumferential direction of the annular casing, and an annular air outlet which is positioned at the front side and distributed along the circumferential direction of the annular casing. The heat exchanger has higher heat exchange efficiency and uniform heat exchange. In addition, the annular air conditioner indoor unit adopting the annular or arc-shaped heat exchanger has the advantages of wide air supply range, attractive appearance and higher heat exchange efficiency.
Description
Technical Field
The present invention relates to air conditioning technology, and more particularly, to a heat exchanger for an indoor unit of an annular air conditioner and an indoor unit of an annular air conditioner.
Background
At present, the traditional indoor unit of the air conditioner has two types of vertical type and wall-mounted type. The existing wall-mounted air conditioner indoor units are all long-strip-shaped, heat exchange is carried out by utilizing a bending type evaporator, air supply is carried out by using fan driving components such as a cross-flow fan, an axial flow fan or a centrifugal fan, and an air supply opening is usually long-strip-shaped. The existing vertical air conditioner indoor unit is in a column shape which is vertically placed, exchanges heat by using a plate type evaporator, and supplies air by using fan type driving components such as a cross-flow fan, an axial flow fan or a centrifugal fan, and the like, and an air supply opening is rectangular. The existing indoor units of the air conditioner are easy to generate visual aesthetic fatigue in appearance, the air supply range of the air supply outlet is smaller, the use experience of users is affected, and especially for the indoor units of the desktop air conditioner placed on a desktop, the indoor units of the air conditioner have higher requirements on the appearance, and because the indoor units are closer to the users, uncomfortable experience of the users is more prominent.
Disclosure of Invention
An object of the first aspect of the present invention is to overcome at least one of the drawbacks of the prior art and to provide a heat exchanger with a high heat exchange efficiency suitable for an indoor unit of a ring air conditioner.
An object of the second aspect of the present invention is to provide an annular air conditioner indoor unit having an attractive appearance, a wide air supply range, and high heat exchange efficiency.
A further object of the second aspect of the present invention is to avoid accumulation of condensed water inside the indoor unit of the ring air conditioner.
According to a first aspect of the present invention, the present invention provides a heat exchanger for an indoor unit of an annular air conditioner, including a refrigerant pipe for circulating a refrigerant and a plurality of heat exchange fins penetrating the refrigerant pipe, wherein the heat exchanger is an annular heat exchanger, a contour line of the refrigerant pipe is an annular curve, and the refrigerant pipe extends from a refrigerant inlet end to a refrigerant outlet end along a circumferential direction of the annular curve in a whirling manner; and is also provided with
Each heat exchange fin is a sheet fin extending along the radial direction of the annular curve.
According to a first aspect of the present invention, the present invention provides a heat exchanger for an indoor unit of an annular air conditioner, including a refrigerant pipe for circulating a refrigerant and a plurality of heat exchange fins penetrating the refrigerant pipe, the heat exchanger being an arc-shaped heat exchanger, a contour line of the refrigerant pipe being a first arc-shaped curve, the refrigerant pipe extending from a refrigerant inlet end thereof to a refrigerant outlet end thereof in a circumferential direction of the first arc-shaped curve in a reciprocating manner; and is also provided with
Each heat exchange fin is a sheet fin extending along the radial direction of the annular curve.
According to a second aspect of the present invention, there is provided an indoor unit of a ring air conditioner, comprising:
the annular shell is provided with an air inlet grille which is positioned at the rear side of the annular shell and distributed along the circumferential direction of the annular shell, and an annular air outlet which is positioned at the front side of the annular shell and distributed along the circumferential direction of the annular shell;
the heat exchanger of any one of the above, which is disposed inside the annular casing, extends along the circumferential direction of the annular casing, and is configured to exchange heat with at least part of the air flow entering the annular casing through the air inlet grille;
the air flow driving device is arranged in the annular casing and is configured to promote air flow in the annular casing to flow towards the annular air outlet.
Optionally, the indoor unit of the ring air conditioner further includes a condensed water collecting device for collecting condensed water generated on each section of the heat exchanger, the condensed water collecting device including:
the upper water receiving disc is arranged on the inner side of the upper half part of the heat exchanger along the circumferential direction of the heat exchanger and is used for collecting condensed water generated by the upper half part of the heat exchanger;
the lower water receiving disc is arranged on the outer side of the lower half part of the heat exchanger along the circumferential direction of the heat exchanger and is at least used for collecting condensed water generated by the lower half part of the heat exchanger; and
and the water guide pipe is communicated with the upper water receiving disc and the lower water receiving disc, and is used for guiding condensed water collected by the upper water receiving disc to the lower water receiving disc, so that the condensed water is directly or indirectly discharged to the outside of the annular shell through the lower water receiving disc.
Optionally, the end of the upper water receiving disc is provided with a water collecting groove at the outer side so as to allow condensed water received by the upper water receiving disc to be collected in the water collecting groove along the outer surface of the upper water receiving disc; and is also provided with
And a through hole is formed in the bottom wall of the water collecting tank, the upper end of the water guide pipe is communicated with the through hole, so that condensed water in the water collecting tank is allowed to flow into the water guide pipe through the through hole, and then flows to the lower water receiving disc through the water guide pipe.
Optionally, any section of the upper water pan taken along the radial direction of the upper water pan is an arc-shaped curve convexly curved towards the inner side of the upper water pan; and/or
Any section of the lower water pan taken along the radial direction of the lower water pan is a curve convexly curved towards the outer side of the lower water pan, and the curve comprises a middle circular arc section and two straight line sections symmetrically connected to the front side and the rear side of the middle circular arc section.
Optionally, the heat exchanger further comprises an inner tube plate arranged on the inner side of the heat exchange fin and an outer tube plate arranged on the outer side of the heat exchange fin, the refrigerant tube is supported between the inner tube plate and the outer tube plate, and the outer tube plate is connected with the annular shell; and is also provided with
The upper water receiving disc is connected to the inner tube plate, and the lower water receiving disc is connected to the outer tube plate.
Optionally, the annular housing comprises an annular front outer housing, an annular front inner housing, and an annular rear housing;
the front inner shell is arranged inside the front outer shell, and a gap is reserved between the front inner shell and the shell wall of the front outer shell; and is also provided with
The rear housing has an inner side edge and an outer side edge extending in a circumferential direction thereof, the rear side of the front inner housing is connected to the inner side edge of the rear housing, the rear side of the front outer housing is connected to the outer side edge of the rear housing, so that a containing space is defined between the rear housing, the front inner housing and the front outer housing, and the heat exchanger and the air flow driving device are both installed in the containing space.
Optionally, the airflow driving device is a closed annular ion wind generating device extending along the circumferential direction of the annular casing.
Optionally, the annular air conditioner indoor unit is a desktop air conditioner indoor unit.
The heat exchanger is suitable for the annular air conditioner indoor unit, the outline of the refrigerant pipe is an annular curve or an arc curve, the heat exchange fins are sheet fins, the refrigerant pipe is spirally or reciprocally extended from the refrigerant inlet end to the refrigerant outlet end along the circumferential direction of the annular curve or the arc curve, on one hand, the extension length of the refrigerant pipe is prolonged, the heat exchange area between the refrigerant in the refrigerant pipe and the air outside the refrigerant pipe is increased, the heat exchange efficiency is improved, and on the other hand, the heat exchange mode of combining a plurality of circles of refrigerant pipes and the sheet fins is more uniform, and the heat exchange effect is improved.
The air conditioner indoor unit provided by the invention is provided with the annular shell, so that the whole air conditioner indoor unit is annular in shape, the annular air conditioner indoor unit is attractive and unique and is novel, and the annular air conditioner indoor unit can be used as an ornament especially for a desktop air conditioner indoor unit placed on a desktop. Meanwhile, the annular air outlet is formed in the front side of the annular air conditioner indoor unit, 360-degree wide-angle air supply is achieved, the air supply range is enlarged, local air flow impact is avoided, and comfort level experience of a user is improved.
Further, since the present invention is an annular air conditioner indoor unit, it employs a heat exchanger extending along the circumferential direction of an annular casing. During operation, condensed water is generated in each section of the heat exchanger, and the condensed water drops downwards under the action of self gravity. Therefore, the collection of condensed water is not negligible, and at the same time, for such shaped cabinets and heat exchangers, the collection of condensed water is one of the difficulties and emphasis of design. On the basis of designing the shell and the heat exchanger with special shapes, the invention further designs the condensed water collecting device which can collect condensed water generated on each section of the heat exchanger and discharge the condensed water outside the annular shell, thereby avoiding potential safety hazards caused by the condensed water dripping onto the lower section of the heat exchanger or other parts or being retained at the bottom of the shell.
The above, as well as additional objectives, advantages, and features of the present invention will become apparent to those skilled in the art from the following detailed description of a specific embodiment of the present invention when read in conjunction with the accompanying drawings.
Drawings
Some specific embodiments of the invention will be described in detail hereinafter by way of example and not by way of limitation with reference to the accompanying drawings. The same reference numbers will be used throughout the drawings to refer to the same or like parts or portions. It will be appreciated by those skilled in the art that the drawings are not necessarily drawn to scale. In the accompanying drawings:
fig. 1 is a schematic structural view of a heat exchanger for an indoor unit of a ring air conditioner according to an embodiment of the present invention;
fig. 2 is a schematic structural view of a heat exchanger for an indoor unit of a ring air conditioner according to another embodiment of the present invention;
fig. 3 is a schematic structural view of an indoor unit of a ring air conditioner according to an embodiment of the present invention;
fig. 4 is a schematic structural exploded view of an indoor unit of a ring air conditioner according to an embodiment of the present invention;
fig. 5 is a schematic cross-sectional view of an indoor unit of a ring air conditioner according to an embodiment of the present invention;
FIG. 6 is a schematic structural view of a heat exchanger assembled with a condensate water collecting apparatus according to one embodiment of the present invention;
FIG. 7 is a schematic structural exploded view of a condensate water collecting apparatus according to one embodiment of the present invention;
FIG. 8 is a schematic cross-sectional view of the upper drip tray taken along section line X-X in FIG. 7;
FIG. 9 is a schematic cross-sectional view of the lower drip tray and drain tube taken along section line Y-Y in FIG. 7;
FIG. 10 is a schematic block diagram of a rear housing according to one embodiment of the invention;
FIG. 11 is a schematic block diagram of a first curve according to one embodiment of the invention;
fig. 12 is a schematic structural diagram of a second curve according to one embodiment of the present invention.
Detailed Description
The invention provides a heat exchanger for an indoor unit of an annular air conditioner. Fig. 1 is a schematic structural view of a heat exchanger for an indoor unit of a ring air conditioner according to one embodiment of the present invention. In the embodiment shown in fig. 1, the heat exchanger 20 includes a refrigerant pipe 21 for circulating a refrigerant, and a plurality of heat exchange fins 22 penetrating the refrigerant pipe 21. The outline of the refrigerant tube is also illustrated in fig. 1.
In particular, the heat exchanger 20 is an annular heat exchanger, and the contour line of the refrigerant pipe 21 is an annular curve M. The annular curve M matches the shape of the annular casing of the annular air conditioning indoor unit in which the heat exchanger 20 is located. For example, when the casing of the annular air conditioner indoor unit is annular, the annular curve M is an annular curve; when the casing of the annular air conditioner indoor unit is in an elliptical ring shape, the annular curve M is an elliptical ring curve. The refrigerant pipe 21 extends along the annular curve from the refrigerant inlet end 211 to the refrigerant outlet end 212. The outline of the refrigerant tube 21 referred to in the present invention means a general shape of the refrigerant tube 21 as a whole. That is, the heat exchanger 20 has a plurality of coils of refrigerant pipes, and the refrigerant pipes 21 thereof are wound around a plurality of coils along the above-mentioned annular curve.
Further, each heat exchange fin 22 is a plate fin extending in the radial direction of the above annular curve. Each circle of refrigerant pipes 21 simultaneously penetrates through a plurality of heat exchange fins 22, and each heat exchange fin 22 is simultaneously penetrated by a plurality of circles of refrigerant pipes 21.
In some embodiments of the present invention, the plurality of heat exchange fins 22 may be uniformly distributed along the circumference of the refrigerant pipe 21. In other embodiments, the plurality of heat exchange fins 22 may be divided into a plurality of heat exchange fin groups arranged at intervals along the circumferential direction of the refrigerant tube 21, each heat exchange fin group including a plurality of heat exchange fins 22 closely arranged, and a certain gap is formed between two adjacent heat exchange fin groups. Each heat exchange fin group and the refrigerant tube 21 where the heat exchange fin group is positioned are driven to form an arc-shaped heat exchange section 25 together. Therefore, the air flowing through the gap between the adjacent two arc-shaped heat exchange sections 25 does not exchange heat with the refrigerant, so that the annular air conditioner indoor unit 1 using the heat exchanger 20 can send out cool, non-cool, warm and non-hot soft air.
Fig. 2 is a schematic structural view of a heat exchanger for an indoor unit of a ring air conditioner according to another embodiment of the present invention. The outline of the refrigerant tube is also illustrated in fig. 2. In the embodiment shown in fig. 2, the heat exchanger 20 is an arc-shaped heat exchanger, and the contour line of the refrigerant pipe 21 is a first arc-shaped curve N. The first arc-shaped curve N matches the shape of the annular casing of the annular air conditioner indoor unit in which the heat exchanger 20 is located. For example, when the casing of the annular air conditioner indoor unit is annular, the first arc-shaped curve N is an arc-shaped curve; when the casing of the annular air conditioner indoor unit is in an elliptical ring shape, the ring-shaped curve is an elliptical arc-shaped curve. The refrigerant tube 21 extends from the refrigerant inlet end 211 to the refrigerant outlet end 212 along the first arc-shaped curve N. A gap 26 is formed between the end and the beginning of the extension of the heat exchanger 20, and the air flowing through the gap 26 does not exchange heat with the refrigerant, so that the annular air-conditioning indoor unit 1 using the heat exchanger 20 can send out cool, non-cool, warm and non-hot soft air.
Further, each heat exchange fin 22 is a plate fin extending in the radial direction of the above-described first arc-shaped curve N.
The heat exchanger 20 is suitable for an annular air conditioner indoor unit, the outline of a refrigerant pipe 21 is an annular curve or an arc curve, heat exchange fins 22 are sheet fins, the refrigerant pipe 21 is spirally or reciprocally extended from a refrigerant inlet end 211 to a refrigerant outlet end 212 along the circumferential direction of the annular curve or the arc curve, on one hand, the extension length of the refrigerant pipe 21 is prolonged, the heat exchange area between the refrigerant inside the refrigerant pipe and the air outside the refrigerant pipe is increased, the heat exchange efficiency is improved, and on the other hand, the heat exchange mode of combining a plurality of circles of refrigerant pipes and the sheet fins is relatively uniform, and the heat exchange effect is improved.
The invention also provides an annular air conditioner indoor unit. Fig. 3 is a schematic structural view of an indoor unit of a ring air conditioner according to an embodiment of the present invention, fig. 4 is a schematic structural exploded view of an indoor unit of a ring air conditioner according to an embodiment of the present invention, and fig. 5 is a schematic sectional view of an indoor unit of a ring air conditioner according to an embodiment of the present invention. Referring to fig. 3 to 5, the ring-shaped air conditioner indoor unit 1 of the present invention includes a ring-shaped casing 10, the heat exchanger 20 described in any of the above embodiments, and an air flow driving device 30.
The axis of the annular casing 10 extends in the front-rear direction. Specifically, the annular casing 10 has an inner contour line and an outer contour line, each of which is a closed annular curve having a preset shape formed by one rotation in a vertical plane along respective predetermined paths about an axis in the front-rear direction. The outer and inner contours of the annular housing 10 may be annular, elliptical-like, heart-shaped, or other shaped, graceful, closed ring. The shape of the outer contour of the annular housing 10 may be the same as or different from the shape of the inner contour thereof. Also, the ring-shaped casing 10 has an air inlet grill 110 located at a rear side thereof and distributed along a circumferential direction thereof, and a ring-shaped air outlet 120 located at a front side thereof and distributed along a circumferential direction thereof. The indoor air flow can enter the annular casing 10 through the air inlet grille 110, and the air flow in the annular casing 10 can be sent to the indoor through the annular air outlet 120. The air inlet grille 110 is formed with a plurality of air inlets uniformly distributed along the circumferential direction of the annular casing 10. The air inlet grille 110 is preferably in the form of a closed ring, with the ring-shaped air inlet grille 110 being distributed over the entire circumferential casing wall of the annular casing 10. In some alternative embodiments, the air inlet grille 110 may also be semi-closed curved, such as a dome shape, distributed over a partial section of the circumferential casing wall of the annular casing 10.
The annular air conditioner indoor unit 1 provided by the invention is provided with the annular shell 10, so that the whole air conditioner indoor unit is annular in a unique way, the annular air conditioner indoor unit 1 is attractive and unique and is novel, and the annular air conditioner indoor unit can be used as an ornament especially for a desktop air conditioner indoor unit placed on a desktop. Meanwhile, the annular air outlet is formed in the front side of the annular air conditioner indoor unit 1, 360-degree wide-angle air supply is achieved, the air supply range is enlarged, local air flow impact is avoided, and comfort experience of a user is improved.
The heat exchanger 20 is disposed inside the annular casing 10, extends along the circumferential direction of the annular casing 10, and is configured to exchange heat with at least part of the air flow entering the annular casing 10 via the air inlet grille 110, so as to change the air flow into a heat exchanged air flow with a higher temperature (when the annular air conditioner indoor unit heats) or a lower temperature (when the annular air conditioner indoor unit cools).
The airflow driving device 30 is disposed inside the annular casing 10 and configured to promote airflow inside the annular casing 10 toward the annular air outlet 120.
Because the annular air conditioner indoor unit 1 adopts any heat exchanger 20, the air flow entering the annular casing 10 through the air inlet grille 110 can be subjected to uniform and effective heat exchange, the heat exchange efficiency is higher, and the refrigerating/heating effect of the annular air conditioner indoor unit 1 is improved.
The shape of the heat exchanger 20 matches the shape within the annular housing 10. For example, the heat exchanger 20 may be a circular ring heat exchanger, an elliptical ring heat exchanger, or other shaped ring heat exchangers, or the heat exchanger 20 may be a circular arc heat exchanger, or other arcuate heat exchangers. Since the axis of the annular casing 10 extends in the front-rear direction, the axis of the heat exchanger 20 also extends in the front-rear direction, and the heat exchanger 20 also has an inner contour and an outer contour, both of which are annular closed curves in a vertical plane or semi-closed arc curves in a vertical plane.
Since the casing of the annular air conditioner indoor unit 1 of the present invention adopts an original annular shape, the present invention also adopts the heat exchangers 20 extending or distributed along the circumferential direction of the annular casing 10 in order to improve heat exchange efficiency and simplify the structure. However, in operation, condensed water is produced in each section of the heat exchanger 20 and drops downwardly under its own weight. Therefore, the collection of condensed water is not negligible, and at the same time, for such shaped cabinets and heat exchangers, the collection of condensed water is one of the difficulties and emphasis of design.
To this end, in some embodiments of the present invention, the ring-shaped air conditioner indoor unit 1 further includes a condensed water collecting device 80 for collecting condensed water generated on each section of the heat exchanger 20, which is capable of collecting condensed water generated on each section of the heat exchanger 20 and discharging the condensed water to the outside of the ring-shaped casing 10, thereby avoiding potential safety hazards caused by the condensed water dropping onto a lower section or other components of the heat exchanger 20 or remaining at the bottom of the casing.
Fig. 6 is a schematic structural view of a heat exchanger and a condensate water collecting apparatus according to one embodiment of the present invention, and fig. 7 is a schematic structural exploded view of the condensate water collecting apparatus according to one embodiment of the present invention. The outline of the refrigerant tube is also illustrated in fig. 6. Further, the condensed water collecting device 80 includes an upper water receiving tray 81, a lower water receiving tray 82, and a water guide pipe 83. The upper water receiving tray 81 is disposed inside the upper half of the heat exchanger 20 in the circumferential direction of the heat exchanger 20 for collecting condensed water generated from the upper half of the heat exchanger 20. The lower water receiving tray 82 is disposed at an outer side of the lower half of the heat exchanger 20 in a circumferential direction of the heat exchanger 20 to collect at least condensed water generated at the lower half of the heat exchanger 20. The water guide pipe 83 communicates the upper and lower water receiving trays for guiding the condensed water collected by the upper water receiving tray 81 to the lower water receiving tray 82 so as to be directly or indirectly discharged to the outside of the ring-shaped casing 10 through the lower water receiving tray 82.
The separation surface of the upper half and the lower half of the heat exchanger 20 is a plane passing through the geometric center of the annular casing 10 and extending in the horizontal direction. The inside of a certain component (e.g. heat exchanger 20) means its side close to the geometric center of the annular housing 10, and correspondingly the outside of a certain component (e.g. heat exchanger 20) means its side remote from the geometric center of the annular housing 10.
Specifically, in some embodiments, the heat exchanger 20 is an annular heat exchanger. Therefore, the contour line of the upper water pan 81 is substantially in the shape of an upwardly convex semicircle, and the contour line of the lower water pan 82 is substantially in the shape of a downwardly convex semicircle.
Therefore, the condensed water generated by the upper half part of the heat exchanger 20 drops onto the upper water receiving disc 81 positioned on the inner side of the heat exchanger 20 under the action of the gravity of the condensed water, the condensed water generated by the lower half part of the heat exchanger 20 drops onto the lower water receiving disc 82 positioned on the outer side of the heat exchanger 20 under the action of the gravity of the condensed water, and the condensed water collected on the upper water receiving disc 81 is guided to the lower water receiving disc 82 through the water guide pipe 83, so that the annular shell 10 is discharged, and potential safety hazards caused by the fact that the condensed water generated by the upper half part of the heat exchanger 20 drops onto the lower half part or other parts of the lower part or stays at the bottom of the annular shell 10 are avoided.
In some embodiments of the present invention, the condensed water collecting device 80 further includes a drain pipe 84 which communicates the lower drip tray 82 with the outer space of the annular casing 10 to drain the condensed water on the lower drip tray 82 to the outside of the annular casing 10.
Specifically, the bottom of the lower drip tray 82 has a drain hole 821 for draining condensed water therein, and a drain pipe 84 is connected to the drain hole 821 and extends to the outside of the annular casing 10 by being bent backward under the lower drip tray 82. Thus, the drain pipe 84 can be hidden at the rear side of the annular casing 10, so as to facilitate the appearance of the annular air conditioner indoor unit 1 to be attractive.
In some embodiments of the present invention, the end of the upper water receiving tray 81 has a water collecting groove 811 at the outside to allow condensed water received by the upper water receiving tray 81 to be collected in the water collecting groove 811 along the outer surface 81a thereof. A through hole 812 is formed in the bottom wall of the water collecting tank 811, and the upper end of the water guide pipe 83 communicates with the through hole 812 to allow condensed water in the water collecting tank 811 to flow into the water guide pipe 83 through the through hole 812, and thus to flow to the lower water receiving tray 82 through the water guide pipe 83.
Further, the water guide pipe 83 extends downward from the upper end to the rear side of the heat exchanger 20 in a backward bent manner, and extends downward vertically or obliquely to the inner surface 82a of the lower water pan 82 at the rear side of the heat exchanger 20 so as to be hidden at the rear side of the heat exchanger 20, so as to facilitate the improvement of the external appearance of the annular air conditioner indoor unit 1.
Fig. 8 is a schematic cross-sectional view of the upper water pan taken along section line X-X in fig. 7. In some embodiments of the present invention, any of the sections of the upper drip tray 81 taken in the radial direction thereof has an arc-shaped curve S convexly curved toward the inside thereof. That is, the upper drip tray 81 extends in the front-rear direction along an arc-shaped curve S protruding toward the inside thereof. In other words, the outer surface of the upper drip tray 81 for receiving the condensed water is a curved surface recessed toward the geometric center of the upper drip tray 81, thereby facilitating collection of the condensed water without structural interference with the front inner case 142.
Further, the arc-shaped curve S may be a circular arc-shaped curve, and the diameter of the circle on which the circular arc-shaped curve is located may be any value ranging from 30 to 45mm, for example, 30mm, 33mm, 36mm, 39mm, 42mm or 45mm.
Fig. 9 is a schematic cross-sectional view of the lower drip tray and the drain tube taken along section line Y-Y in fig. 7. In some embodiments of the present invention, any cross section of the lower drip tray 82 taken in the radial direction thereof is a curve convexly curved toward the outside thereof, the curve including a middle circular arc section 822 and two inclined straight line sections 823 symmetrically connected to the front and rear sides of the middle circular arc section 822. The lower drip tray 82 having the inclined straight line section has a larger inclination angle and slope than the drip tray having a circular arc-shaped cross section, and the flow rate of condensed water thereon is faster, so that the condensed water can be collected and discharged more quickly. Since the lower drip tray 82 is outside the heat exchanger 20, it is not considered to interfere with the structure of the front inner case 142.
Further, the ratio between the length of each straight line section 823 and the diameter of the circle in which the middle circular arc section 822 is located is any ratio ranging from 1:1 to 1:2, for example, 1:1, 1:1.3, 1:1.5, 1:1.7, 1:1.9 or 1:2, so as to further facilitate the collection of condensed water.
Therefore, the invention can improve the collecting speed and the flowing speed of the condensed water on the upper water receiving disc 81 and the lower water receiving disc 82 as much as possible on the premise of avoiding the structural interference by specially designing the shapes of the upper water receiving disc 81 and the lower water receiving disc 82, thereby improving the collecting and discharging efficiency of the condensed water.
In some embodiments of the present invention, the number of the water guide pipes 83 may be two, and both ends of the upper water receiving tray 81 are respectively communicated with the lower water receiving tray 82 through the two water guide pipes 83. Each end of the upper drip tray 81 is provided with a water collecting trough 811.
In some embodiments of the present invention, the heat exchanger 20 further includes an inner tube plate (not shown) disposed inside the heat exchange fins 22 and an outer tube plate (not shown) disposed outside the heat exchange fins 22, between which the refrigerant tubes 21 are supported, the outer tube plate being connected to the annular housing 10. Specifically, the outer tube plate may be fastened to the rear housing 143 by screws or other suitable means. The upper water pan 81 is connected to the inner tube plate and the lower water pan 82 is connected to the outer tube plate. The upper water pan 81 and the inner tube plate, and the lower water pan 82 and the outer tube plate may be fastened by screws or other suitable means.
In some embodiments of the present invention, the annular casing 10 includes an annular front outer casing 141, an annular front inner casing 142, and an annular rear casing 143. It is understood that the axes of the rear case 143, the front inner case 142, and the front outer case 141 all extend in the front-rear direction. The front inner case 142 is disposed inside the front outer case 141 with a gap left between the front inner case 142 and the case wall of the front outer case 141. Fig. 10 is a schematic structural view of a rear housing according to an embodiment of the present invention. The rear case 143 has an inner side edge portion 1432 and an outer side edge portion 1433 extending in the circumferential direction thereof. It is emphasized that "inner side" here means a side closer to the center thereof in the radial direction of the rear case 143, and correspondingly "outer side" here means a side farther from the center thereof in the radial direction of the rear case 143. The rear side of the front inner case 142 is connected to an inner side edge portion 1432 of the rear case 143, and the rear side of the front outer case 141 is connected to an outer side edge portion 1433 of the rear case 143, so that an accommodating space is defined between the rear case 143, the front inner case 142, and the front outer case 141, in which the heat exchanger 20 and the airflow driving device 30 are installed.
Specifically, the front inner case 142 and the rear case 143, and the front outer case 141 and the rear case 143 may be coupled by a snap fit, screw connection, or other suitable means. Further, airtight seals are formed between the mating interfaces of the front inner case 142 and the rear case 143, and between the mating interfaces of the front outer case 141 and the rear case 143, to prevent the air flow within the annular casing 10 from leaking to the indoor environment through other locations than the annular air outlet 120. For example, sealing rings may be provided between the mating interfaces of the front inner case 142 and the rear case 143, and between the mating interfaces of the front outer case 141 and the rear case 143.
Further, the front inner case 142 and the front outer case 141 each have front side edges extending in their respective circumferential directions, and the annular air outlet 120 is formed between the front side edges of the front inner case 142 and the front outer case 141. The air inlet grill 110 is formed on the rear housing 143.
Further, the case wall of the rear case 143 extends from the inner side edge thereof to the outer side edge thereof convexly rearward in the radial direction of the rear case 143. That is, the rear case 143 is generally annular tubular, and the front side of the annular tubular is provided with an annular opening extending in the circumferential direction thereof, the outer side edge of the annular opening forming the outer side edge of the rear case 143, and the inner side edge of the annular opening forming the inner side edge of the rear case 143. The air inlet grill 110 is opened in a region of the housing wall of the rear housing 143 that protrudes rearward most.
The present invention further defines the annular casing 10 to include three parts, namely, a front outer casing 141, a front inner casing 142 and a rear casing 143, which are all annular, and defines the annular air outlet 120 and an annular accommodating space for accommodating the heat exchanger 20 and the airflow driving device 30 through the positional layout and connection relationship between the front outer casing 141, the front inner casing 142 and the rear casing 143, which are very simple in structure and assembly, and simplifies the structural cost and labor cost.
Specifically, the front side edges of the front inner case 142 and the front outer case 141 may each have a circular shape, and the center of the circle in which the front side edge of the front inner case 142 is located may coincide with the center of the circle in which the front side edge of the front outer case 141 is located, so that the widths of the respective sections of the annular air outlet 120 in the radial direction thereof are the same. The radius of the circle in which the front side edge of the front inner case 142 is located is smaller than the radius of the circle in which the front side edge of the front outer case 141 is located.
In some embodiments of the present invention, the center of the annular casing 10 defines a center hole 130 that is opened front and back to form a negative pressure in the center hole 130 when the air flow driving device 30 drives the air supply, so that natural air in the room, which is not subjected to heat exchange, is jetted from the rear to the front through the center hole 130 and mixed with the air flow after heat exchange, which is sent out through the annular air outlet 120. That is, the center ring hole 130 in the middle of the annular casing 10 penetrates the annular casing 10 in the front-rear direction, and any part may not be placed in the center ring hole 130. The air flow after heat exchange is sent out from the annular air outlet 120 under the driving of the air flow driving device 30, at this time, negative pressure is formed in the outer periphery of the annular air outlet 120 and the central ring hole 130, and natural air behind the annular air conditioner indoor unit 1 is sprayed out from the back to the front through the negative pressure area of the central ring hole 130 and is mixed with the air flow after heat exchange sent out from the annular air outlet 120. When the mixed air flows are blown to the human body, the effects of cooling, not cooling, heating and not heating can be achieved, and the softness and the comfort of air supply of the annular air conditioner indoor unit 1 are improved.
It can be seen that the opening at the rear side of the central ring hole 130 forms a non-heat exchange wind (i.e., natural wind) inlet, the opening at the front side of the central ring hole 130 forms a non-heat exchange wind outlet, and the annular air outlet 120 surrounds the non-heat exchange wind outlet, so that the air flow after heat exchange sent out by the annular air outlet 120 is uniformly mixed with the natural wind sent out by the non-heat exchange wind outlet, and the comfort experience of the user is further improved.
In some embodiments of the present invention, the front inner housing 142 extends from back to front along a first curve 150. Fig. 11 is a schematic structural view of a first curve according to an embodiment of the present invention. The first curve 150 includes a first section 151 and a second section 152 which are sequentially disposed from the rear to the front and smoothly connected, and the first section 151 and the second section 152 are separated along a dotted line in fig. 11. The first section 151 is a circular arc curve, and the center of the circle where the first section 151 is located outside the first section 151. That is, the first section 151 is a circular arc curve protruding toward the inside of the inner case 142, on one hand, the size of the accommodating space in the annular case 10 can be increased to facilitate the installation of the heat exchanger 20 and the air flow driving device 30, and on the other hand, the central annular hole 130 can be gradually widened from the rear to the front, i.e., the cross-sectional area of the central annular hole 130 cut out along a plane perpendicular to the front-rear direction is gradually increased from the rear to the front, so that the air flow is diffused after flowing through the central annular hole 130, thereby promoting the mixing between the non-heat exchange air flow sent out through the central annular hole 130 and the heat exchange air flow sent out through the annular air outlet 120, improving the mixing effect, and further expanding the air supply range.
Further, the second section 152 may be a straight line; the second section 152 may also be a circular arc curve, where the center of the circle where the second section 152 is located inside the second section 152, that is, the second section 152 is a circular arc curve protruding toward the outside of the inner housing 142. Further, the second section 152 extends a much smaller length than the first section 151.
In some embodiments of the present invention, the front outer case 141 extends from rear to front along the second curve 160. Fig. 12 is a schematic structural diagram of a second curve according to one embodiment of the present invention. The second curve 160 includes a third section 161 and a fourth section 162 which are sequentially disposed from the rear to the front and smoothly connected, and the third section 161 and the fourth section 162 are separated along a dotted line in fig. 12. The third section 161 is a circular arc curve, and the center of the circle where the third section 161 is located inside the third section 161. That is, the third section 161 is a circular arc curve protruding toward the outside of the front outer case 141, thereby being matched with the first section 151 of the front inner case 142, further increasing the size of the receiving space of the annular case 10, and also improving the external aesthetic effect of the annular case 10.
Further, the fourth section 162 may be a straight line; the fourth section 162 may also be a circular arc curve, and the center of the circle where the fourth section 162 is located outside the fourth section 162, that is, the fourth section 162 is a circular arc curve protruding toward the inside of the outer housing 142. Further, the fourth section 162 extends a length substantially less than the length of the third section 161. Thus, the fourth section 162 may form a constriction portion with a rapidly reduced cross-sectional area on the inner side of the annular air outlet 120 in cooperation with the second section 152 of the front inner housing 142, so as to increase the air outlet speed of the annular air outlet 120.
In some embodiments of the present invention, the airflow driving device 30 is a closed annular ion wind generating device extending along the circumferential direction of the annular casing 10. The annular ion wind generating device is used for promoting indoor air to enter the annular casing 10 through the annular air inlet grille 110 and flow towards the annular air outlet 120 after heat exchange through the heat exchanger 20. Specifically, the annular ion wind generating apparatus ionizes air in the annular housing 10 under high pressure to generate a large number of charged particles, which are directionally moved by the electric field force to form ion wind. Since the working principle of the ion wind generating device itself is easily available to those skilled in the art, the description thereof will not be repeated here.
The invention utilizes the annular ion wind generating device to generate a large amount of charged particles under high pressure, and the charged particles move under the action of electric field force to generate kinetic energy, thereby forming ion wind, having natural wind sense, realizing mute air supply and reducing the noise when the annular air conditioner indoor unit 1 operates.
In alternative embodiments of the present invention, the airflow driving device 30 may also include a plurality of small axial flow fans or other types of fans distributed along the circumference of the annular casing 10.
In some embodiments of the present invention, the ring air conditioner indoor unit 1 further includes a ring purification module 40, and the ring purification module 40 is disposed in the flow direction of the air flow in the ring casing 10, for performing purification operations such as dust removal, sterilization, etc. on the air flow flowing to the ring air outlet 120.
Further, the heat exchanger 20, the airflow driving device 30, and the annular purifying module 40 are disposed in the annular casing 10 in this order from the back to the front. Thereby, the ring-shaped ion wind generating device generates ion wind under high pressure while possibly additionally generating harmful gas such as ozone, which can be absorbed or adsorbed by the ring-shaped purification module 40 before being fed into the room, thereby enhancing the purification effect.
In alternative embodiments, the heat exchanger 20, the airflow driving device 30, and the annular purifying module 40 may be arranged in other orders within the annular housing 10. For example, the heat exchanger 20 may be disposed between the airflow driving device 30 and the annular purge module 40.
In some embodiments of the present invention, the ring air conditioner indoor unit 1 is a desk air conditioner indoor unit. The bottom of the ring-shaped casing 10 has a flat surface so as to be placed directly on the table top. In some embodiments, the ring-shaped air conditioner indoor unit 1 may also include a base 70 disposed below the ring-shaped casing 10 for supporting the ring-shaped casing 10.
When the annular air conditioning indoor unit 1 is a desktop air conditioning indoor unit, the heights of the annular air outlet 120 and the central ring hole 130 are just in the middle of the height of a human body, so that the defects of long heating and refrigerating time caused by hot air flow rising and cold air flow sinking during refrigeration in the traditional air conditioning heating process are overcome.
It should be understood by those skilled in the art that, unless specifically stated otherwise, terms such as "inner", "outer", "transverse", "front", "rear", etc. used in the embodiments of the present invention are based on the actual usage state of the indoor unit 1 of the ring air conditioner, and these terms are merely for convenience of description and understanding of the technical solution of the present invention, and do not indicate or imply that the device or component to be referred must have a specific orientation, and therefore should not be construed as limiting the present invention.
By now it should be appreciated by those skilled in the art that while a number of exemplary embodiments of the invention have been shown and described herein in detail, many other variations or modifications of the invention consistent with the principles of the invention may be directly ascertained or inferred from the present disclosure without departing from the spirit and scope of the invention. Accordingly, the scope of the present invention should be understood and deemed to cover all such other variations or modifications.
Claims (6)
1. An indoor unit of a ring air conditioner, comprising:
the annular shell is provided with an air inlet grille which is positioned at the rear side of the annular shell and distributed along the circumferential direction of the annular shell, and an annular air outlet which is positioned at the front side of the annular shell and distributed along the circumferential direction of the annular shell;
the heat exchanger is arranged in the annular shell, extends along the circumferential direction of the annular shell, is configured to exchange heat with at least part of air flow entering the annular shell through the air inlet grille, and comprises a refrigerant pipe for circulating refrigerant and a plurality of heat exchange fins penetrating through the refrigerant pipe;
the air flow driving device is arranged in the annular casing and is configured to enable air flow in the annular casing to flow towards the annular air outlet, the air flow driving device is a closed annular ion wind generating device extending along the circumferential direction of the annular casing, and the annular ion wind generating device is used for enabling indoor air to enter the annular casing through an annular air inlet grille and flow towards the annular air outlet after heat exchange of the heat exchanger; wherein the method comprises the steps of
The heat exchanger is an annular heat exchanger, the contour line of the refrigerant pipe is an annular curve, the refrigerant pipe is spirally extended from the refrigerant inlet end to the refrigerant outlet end along the circumferential direction of the annular curve, and each heat exchange fin is a sheet fin extending along the radial direction of the annular curve; or the heat exchanger is an arc-shaped heat exchanger, the contour line of the refrigerant pipe is a first arc-shaped curve, the refrigerant pipe extends from the refrigerant inlet end to the refrigerant outlet end along the circumferential direction of the first arc-shaped curve in a reciprocating manner, each heat exchange fin is a sheet fin extending along the radial direction of the annular curve, and
the annular air conditioner indoor unit is a desktop air conditioner indoor unit.
2. The indoor unit of claim 1, further comprising a condensate water collecting device for collecting condensate water generated at each section of the heat exchanger, the condensate water collecting device comprising:
the upper water receiving disc is arranged on the inner side of the upper half part of the heat exchanger along the circumferential direction of the heat exchanger and is used for collecting condensed water generated by the upper half part of the heat exchanger;
the lower water receiving disc is arranged on the outer side of the lower half part of the heat exchanger along the circumferential direction of the heat exchanger and is at least used for collecting condensed water generated by the lower half part of the heat exchanger; and
and the water guide pipe is communicated with the upper water receiving disc and the lower water receiving disc, and is used for guiding condensed water collected by the upper water receiving disc to the lower water receiving disc, so that the condensed water is directly or indirectly discharged to the outside of the annular shell through the lower water receiving disc.
3. The indoor unit of claim 2, wherein the indoor unit of the ring air conditioner,
the end part of the upper water receiving disc is provided with a water collecting groove at the outer side so as to allow condensed water received by the upper water receiving disc to be collected in the water collecting groove along the outer surface of the upper water receiving disc; and is also provided with
And a through hole is formed in the bottom wall of the water collecting tank, the upper end of the water guide pipe is communicated with the through hole, so that condensed water in the water collecting tank is allowed to flow into the water guide pipe through the through hole, and then flows to the lower water receiving disc through the water guide pipe.
4. The indoor unit of claim 2, wherein the indoor unit of the ring air conditioner,
any section of the upper water receiving disc taken along the radial direction of the upper water receiving disc is an arc-shaped curve which is convexly curved towards the inner side of the upper water receiving disc; and/or
Any section of the lower water pan taken along the radial direction of the lower water pan is a curve convexly curved towards the outer side of the lower water pan, and the curve comprises a middle circular arc section and two straight line sections symmetrically connected to the front side and the rear side of the middle circular arc section.
5. The indoor unit of claim 2, wherein the indoor unit of the ring air conditioner,
the heat exchanger further comprises an inner tube plate arranged on the inner side of the heat exchange fins and an outer tube plate arranged on the outer side of the heat exchange fins, the refrigerant tube is supported between the inner tube plate and the outer tube plate, and the outer tube plate is connected with the annular shell; and is also provided with
The upper water receiving disc is connected to the inner tube plate, and the lower water receiving disc is connected to the outer tube plate.
6. The indoor unit of claim 1, wherein the indoor unit of the ring air conditioner,
the annular shell comprises an annular front outer shell, an annular front inner shell and an annular rear shell;
the front inner shell is arranged inside the front outer shell, and a gap is reserved between the front inner shell and the shell wall of the front outer shell; and is also provided with
The rear housing has an inner side edge and an outer side edge extending in a circumferential direction thereof, the rear side of the front inner housing is connected to the inner side edge of the rear housing, the rear side of the front outer housing is connected to the outer side edge of the rear housing, so that a containing space is defined between the rear housing, the front inner housing and the front outer housing, and the heat exchanger and the air flow driving device are both installed in the containing space.
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| CN201810136777.9A CN108443962B (en) | 2018-02-09 | 2018-02-09 | Heat exchanger for annular air conditioner indoor unit and annular air conditioner indoor unit |
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| CN201810136777.9A CN108443962B (en) | 2018-02-09 | 2018-02-09 | Heat exchanger for annular air conditioner indoor unit and annular air conditioner indoor unit |
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| CN108443962A (en) | 2018-08-24 |
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