CN110887114B - Indoor unit of cabinet air conditioner - Google Patents

Indoor unit of cabinet air conditioner Download PDF

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Publication number
CN110887114B
CN110887114B CN201811044010.XA CN201811044010A CN110887114B CN 110887114 B CN110887114 B CN 110887114B CN 201811044010 A CN201811044010 A CN 201811044010A CN 110887114 B CN110887114 B CN 110887114B
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CN
China
Prior art keywords
air
annular
heat exchanger
flow
guide part
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CN201811044010.XA
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Chinese (zh)
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CN110887114A (en
Inventor
张蕾
王永涛
尹晓英
王晓刚
李英舒
张丽
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Qingdao Haier Air Conditioner Gen Corp Ltd
Haier Smart Home Co Ltd
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Qingdao Haier Air Conditioner Gen Corp Ltd
Haier Smart Home Co Ltd
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Priority to CN201811044010.XA priority Critical patent/CN110887114B/en
Publication of CN110887114A publication Critical patent/CN110887114A/en
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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
    • F24F1/0011—Indoor units, e.g. fan coil units characterised by air outlets
    • F24F1/0014—Indoor units, e.g. fan coil units characterised by air outlets having two or more outlet openings
    • 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
    • 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
    • F24F13/08—Air-flow control members, e.g. louvres, grilles, flaps or guide plates
    • 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
    • F24F13/22—Means for preventing condensation or evacuating condensate

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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-Conditioning Room Units, And Self-Contained Units In General (AREA)

Abstract

The invention provides an indoor unit of a cabinet air conditioner. The cabinet air conditioner indoor unit comprises a shell, an indoor heat exchanger, a plurality of centrifugal fans and a plurality of air guide members. The shell is provided with a heat exchange air inlet, a plurality of mixing air outlets distributed along the vertical direction and a plurality of natural air inlets correspondingly distributed with the plurality of mixing air outlets. The plurality of centrifugal fans are configured to draw ambient air from the ambient environment of the heat exchange air intake and to cause the air to flow toward the plurality of mixing air outlets, respectively. The plurality of air guide components are respectively configured to guide the air flow blown out by the plurality of centrifugal fans to the corresponding mixing air outlets. Each air guiding component is provided with at least one annular air outlet extending around the front-rear direction, and the annular air outlets are configured to blow air flow forwards. The indoor heat exchanger comprises a plurality of sub heat exchangers which are arranged in parallel, and the plurality of sub heat exchangers are respectively arranged on an air inlet flow path between the heat exchange air inlet and the plurality of air supply fans, so that unnecessary cold energy/heat loss is reduced.

Description

Indoor unit of cabinet air conditioner
Technical Field
The invention relates to the field of air conditioning, in particular to an indoor unit of a cabinet air conditioner.
Background
At present, the heat exchange air in the shell is directly blown to the indoor environment by the traditional cabinet air conditioner indoor unit through an air supply fan (a cross flow fan, an axial flow fan or a centrifugal fan and the like), so that the air supply distance is short, the air supply amount is small, the temperature difference between the middle part of the air outlet and the periphery is large, and the user experience is poor. In view of the comprehensive consideration, there is a need in design for a cabinet air conditioner indoor unit with a long air supply distance, a large air supply amount and a uniform temperature of the blown air flow.
Disclosure of Invention
An object of the present invention is to provide a cabinet air conditioner indoor unit having a uniform temperature of an air flow.
A further object of the present invention is to increase the air supply distance and the air supply quantity of the indoor unit of the cabinet air conditioner.
It is a further object of the present invention to reduce the amount of radial play of the air flow blown out by the annular air outlet.
In particular, the present invention provides a cabinet air conditioner indoor unit comprising:
the shell is provided with a heat exchange air inlet, a plurality of mixed air outlets distributed along the vertical direction and a plurality of natural air inlets correspondingly distributed with the plurality of mixed air outlets, wherein the plurality of mixed air outlets and the plurality of natural air outlets are respectively arranged on a front panel and a back panel of the shell;
a plurality of air supply fans configured to suck ambient air from the surrounding environment of the heat exchange air inlet and to cause the air to flow toward the plurality of mixing air outlets, respectively;
the indoor heat exchanger is arranged on an air inlet flow path between the heat exchange air inlet and the plurality of air supply fans; and
the air guiding members are configured to guide air flows blown by the air supplying fans to corresponding mixing air outlets respectively, at least one annular air outlet extending around the front-rear direction is formed in each air guiding member, and the annular air outlets are configured to blow air flows forwards so as to promote ambient air around the natural air inlets to flow forwards and mix with heat exchange air blown by the annular air outlets; wherein the method comprises the steps of
The indoor heat exchanger comprises a plurality of sub heat exchangers which are arranged in parallel, and the plurality of sub heat exchangers are respectively arranged on an air inlet flow path between the heat exchange air inlet and the plurality of air supply fans.
Optionally, each of the air guiding members includes a front air guiding portion and a rear air guiding portion with air flow channels independent of each other; and is also provided with
The front side air guide part and the rear side air guide part are respectively provided with the annular air outlets, so that air flow blown out by the front side annular air outlets is guided to promote air flow blown out by the rear side annular air outlets to flow forwards.
Optionally, the rear wall of the airflow channel of the front air guiding part is the front wall of the airflow channel of the rear air guiding part, so that the airflow flow rules in the front air guiding part and the rear air guiding part are consistent, and the production cost is reduced.
Optionally, the ratio of the air outlet area to the air inlet area of the front air guiding part is smaller than the ratio of the air outlet area to the air inlet area of the rear air guiding part; and/or
The area of the air inlet of the front air guide part is smaller than that of the air inlet of the rear air guide part.
Optionally, the plurality of air supply fans are centrifugal fans, and air inlets of the fans are formed in the rear wall of the volute; and is also provided with
The heat exchange air inlet is formed in two lateral side walls of the shell, and each sub heat exchanger comprises a parallel section extending along the lateral direction, so that the heat exchange area of the heat exchanger and the ambient air is increased.
Optionally, each of the sub heat exchangers further includes:
the two vertical sections are respectively arranged to extend from the two transverse ends of the parallel section to be perpendicular to the parallel section, so that the heat exchange area of the heat exchanger and the ambient air is further increased.
Optionally, the indoor unit of the cabinet air conditioner further includes:
the water receiving disc is provided with a concave cavity with an upward opening, is arranged below the plurality of sub heat exchangers, and is used for supporting the sub heat exchanger positioned at the lowest part and receiving condensed water flowing down from the plurality of sub heat exchangers; wherein the method comprises the steps of
The bottom wall of the concave cavity is provided with a plurality of supporting bulges extending upwards, and the bottommost sub heat exchanger is arranged on the supporting bulges so as to prevent the bottom of the sub heat exchanger from being immersed in condensed water.
Optionally, the indoor unit of the cabinet air conditioner further includes:
the wind shield is arranged above the plurality of sub heat exchangers and is clamped with the water receiving disc to form a heat exchange air inlet channel.
Optionally, the number of the mixed air outlet, the natural air outlet, the air supply fan, the air guide component and the sub heat exchanger is two; and is also provided with
The two air supply fans are arranged between the two air guide components.
Optionally, an air supply fan for blowing air flow to the mixing air outlet at the upper side is configured to work when the indoor heat exchanger receives a refrigeration instruction; and is also provided with
The air supply fan for blowing air flow to the mixing air outlet positioned at the lower side is configured to work when the indoor heat exchanger receives a heating instruction.
According to the cabinet air conditioner indoor unit, the plurality of mixing air outlets are arranged along the vertical direction, so that air can be blown to areas with different heights respectively, and the flexibility is high; the invention also arranges a sub heat exchanger on the air inlet flow path of each air supply fan, and the sub heat exchanger can work when the corresponding air supply fan works, thereby reducing unnecessary cold energy/heat loss.
Furthermore, the invention sucks the ambient air around the natural air inlet to the front side of the annular air outlet to mix with the heat exchange air by arranging the annular air outlet which extends around the front and back directions and blows the air flow forwards, thereby forming hot, cool and uncooled comfortable air and improving the air supply quantity.
Furthermore, the front annular air outlet is utilized to guide and promote the airflow blown out by the rear annular air outlet to flow forwards, so that the integral air supply distance and the air supply quantity are increased.
Furthermore, the rear wall of the airflow channel of the front air guide part is used as the front wall of the airflow channel of the rear air guide part, so that the production cost is reduced, the airflow flow change rules in the front air guide part and the rear air guide part are consistent, the quantity of the airflow blown out by the two annular air outlets and moving towards the radial direction due to mutual interference is reduced, and the integral air outlet effect of the cabinet air conditioner indoor unit is enhanced.
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 side view of a cabinet air conditioner indoor unit according to one embodiment of the invention;
fig. 2 is a schematic cross-sectional view of the indoor unit of the cabinet air conditioner shown in fig. 1;
FIG. 3 is a schematic exploded view of the indoor unit of the cabinet air conditioner shown in FIG. 1;
FIG. 4 is a schematic cross-sectional view of an air guiding member according to one embodiment of the invention;
FIG. 5 is a schematic cross-sectional view of an air guiding member according to another embodiment of the invention;
fig. 6 is a schematic cross-sectional view of an air guiding member according to yet another embodiment of the invention.
Detailed Description
Fig. 1 is a schematic side view of a cabinet air-conditioning indoor unit 100 according to one embodiment of the invention; fig. 2 is a schematic cross-sectional view of the cabinet air-conditioner indoor unit 100 shown in fig. 1; fig. 3 is a schematic exploded view of the indoor unit 100 of the cabinet air conditioner shown in fig. 1. The cabinet air conditioner indoor unit 100 may include a cabinet, a plurality of blower fans, a plurality of air guide members, and an indoor heat exchanger.
The cabinet may include a rear case 111 having a forward opening, and a front panel 112 disposed at the forward opening of the rear case 111. The rear shell 111 may be provided with a heat exchange air inlet 1111 and a plurality of natural air inlets. The front panel 112 may be provided with a plurality of mixing outlets.
The indoor heat exchanger may include a plurality of sub heat exchangers arranged in parallel, and the plurality of sub heat exchangers are respectively arranged on an air inlet flow path between the heat exchange air inlet 1111 and the plurality of air supply fans. The sub-heat exchangers may be operated when the corresponding blower fan is operated to reduce unnecessary cooling/heating losses.
The plurality of supply fans may be configured to draw ambient air from the ambient environment of the heat exchange air intake 1111 and to cause the air to flow toward the corresponding mixing air outlet via the plurality of air directing members, respectively. The air supply fan can be a centrifugal fan, an axial flow fan or a cross flow fan and the like.
The air guiding member may be formed with at least one annular air outlet, and the annular air outlet may be configured to extend around an imaginary axis extending in the front-rear direction and configured to blow air forward so as to promote the ambient air around the natural air inlet to flow forward to mix with the heat exchange air blown out from the annular air outlet, thereby forming hot, cool and uncooled comfortable air and increasing the air supply amount of the cabinet air conditioner indoor unit 100. The natural air inlets may be disposed at positions of the back plate of the back shell 111 corresponding to the mixed air outlets.
In the illustrated embodiment, the cabinet air-conditioning indoor unit 100 may include only two blower fans, blower fan 120 and blower fan 140, respectively. Wherein the blower fan 120 may be configured to cause the heat exchange air to flow toward the mixing outlet 1122 via the air guide member 130 and to cause the ambient air around the natural air intake 1112 to flow forward to mix with the heat exchange air. The supply fan 140 may be configured to cause the heat exchange air to flow toward the mix outlet 1123 via the air guide member 150 and to cause the ambient air around the natural air intake 1113 to flow forward to mix with the heat exchange air. The air blower 120 and the air blower 140 may be disposed between the air guide member 130 and the air guide member 150.
The indoor heat exchanger may include only two sub heat exchangers connected in parallel, an upper heat exchanger 161 and a lower heat exchanger 162, respectively. The upper heat exchanger 161 may be disposed on an air intake path between the heat exchange air inlet 1111 and the upper air blower 120, and the lower heat exchanger 162 may be disposed on an air intake path between the heat exchange air inlet 1111 and the lower air blower 140.
In some embodiments, the air blower 120 may be configured to operate when the indoor heat exchanger receives a cooling command, and the air blower 140 may be configured to operate when the indoor heat exchanger receives a heating command, so as to make use of the characteristics of sinking cold air and floating hot air, and to make the indoor temperature uniform quickly while saving energy consumption. The blower fan 120 and the blower fan 140 may also be configured to operate simultaneously.
The air guiding members 130 and 150 may be the same air guiding structure, and the air guiding structure of the present invention will be described in detail below by taking the air guiding member 130 as an example.
Fig. 4 is a schematic cross-sectional view of an air guide member 130 according to an embodiment of the present invention. Referring to fig. 4, the air guiding member 130 may include a front air guiding portion and a rear air guiding portion with air flow channels independent from each other, and the front air guiding portion and the rear air guiding portion are respectively provided with an annular air outlet, so that the air flow blown out from the front annular air outlet guides the air flow blown out from the rear annular air outlet to flow forward, and the overall air supply distance and the air supply amount are increased.
According to simulation experiments, under the condition that other conditions are the same, compared with an air guide member with only one annular air outlet, the air guide member with the front annular air outlet and the rear annular air outlet not only remarkably improves the air supply distance, but also improves the air supply quantity by at least 20%, wherein the total area of the air outlets of the air guide members with the two annular air outlets is equal to the area of the air outlets of the air guide member with only one annular air outlet.
The front annular air outlet 131 or the rear annular air outlet 132 may have a circular shape, a rectangular shape, an elliptical shape, or the like, projected on an imaginary plane perpendicular to the imaginary axis. The projection shapes of the annular air outlet 131 and the annular air outlet 132 on the imaginary plane may be the same or different.
The airflow passages of the front and rear air guides may include annular segments 131a and 132a, respectively, extending around an imaginary axis. The annular air outlet 131 and the annular air outlet 132 may be formed inside the annular section 131a and the annular section 132a, respectively, i.e., toward one side of the imaginary axis.
The inner peripheral wall, the outer peripheral wall, and the forward and rearward side walls connecting the inner and outer peripheral walls of the annular segment may be provided as a rounded transition to avoid eddy currents at the corners. The inner peripheral wall of the annular segment 132a may be configured to gradually expand from back to front to reduce wind resistance, so as to facilitate the ambient gas to flow forward through the natural wind inlet 1112 and mix with the heat exchange gas.
The airflow channels of the front air guiding portion and the rear air guiding portion may further include an air inlet section 131b and an air inlet section 132b for docking with the air outlet of the blower 120, and the air inlet section 131b and the air inlet section 132b may be respectively disposed to communicate with the annular section 131a and the annular section 132a, so as to extend the air inlet path from the blower 120 to the annular section, so that the airflow velocity in the annular section is more uniform.
The rear wall of the airflow channel of the front air guiding part can be used as the front wall of the airflow channel of the rear air guiding part, so that the production cost can be reduced, the airflow direction entering the annular section 131a from the air inlet section 131b is consistent with the airflow direction entering the annular section 132a from the air inlet section 132b, the airflow change rule in the annular section 131a and the annular section 132a is consistent, the movement quantity of the airflow blown out by the annular air outlet 131 and the annular air outlet 132 in the radial direction due to mutual interference is reduced, and the integral air outlet effect of the air guiding member 130 is enhanced. Wherein the rearward sidewall of the annular segment 131a may be configured to arch rearward to channel the heat exchange gas within the annular segment 132a forward.
The ratio of the area of the annular air outlet 131 to the area of the air inlet section 131b may be smaller than the ratio of the area of the annular air outlet 132 to the area of the air inlet section 132b, so that the flow velocity of the air flow blown out by the annular air outlet 131 is greater than the flow velocity of the air flow blown out by the annular air outlet 132, thereby improving the guiding effect of the air flow blown out by the annular air outlet 131 on the air flow blown out by the annular air outlet 132 and improving the air supply distance of the air guide member 130.
The air inlet area of the air inlet section 131b may be smaller than the air inlet area of the air inlet section 132b, so that the air supply amount of the front air guiding portion is smaller than the air supply amount of the rear air guiding portion, and the air guiding member 130 has a larger air supply amount while having a longer air supply distance. The area of the annular air outlet 132 can be increased as much as possible to reduce wind resistance and make the flow of air smoother.
The annular air outlet 131 and the annular air outlet 132 may be respectively and uniformly provided with a plurality of guide vanes 134 extending along the axial direction and the radial direction of the imaginary axis, so as to reduce the channeling amount of the air flow blown out by the annular air outlet 131 and the annular air outlet 132 in the radial direction, and further make the air flow blown out by the annular air outlet 131 and the annular air outlet 132 more uniform.
Referring to fig. 4, in some embodiments, the annular air outlet 131 may be formed by sandwiching the forward side wall and the inner peripheral wall of the annular segment 131 a. The annular air outlet 132 may be formed by sandwiching a forward side wall and an inner peripheral wall of the annular section 132a.
The forward side wall of the annular segment 131a may be configured such that a tangential plane at any point of the inner end edge thereof extends in the front-rear direction, so that the air flow blown out from the annular air outlet 131 flows in the front-rear direction, thereby improving the guiding effect of the air flow blown out from the annular air outlet 131 on the air flow blown out from the annular air outlet 132.
The inner peripheral wall of the annular segment 131a may be used to guide the airflow blown out by the annular air outlet 132 to flow forward.
The inner peripheral wall of the annular segment 131a may be provided such that a tangential plane at any point of the front end thereof extends in the front-rear direction to cause the air flow blown out by the annular air outlet 132 to flow in the front-rear direction, thereby improving the guiding effect of the air flow blown out by the annular air outlet 131 on the air flow blown out by the annular air outlet 132.
The inner peripheral wall of the annular segment 131a may be disposed outside the inner end edge of the forward sidewall thereof, so that the distance between the annular air outlet 132 and the imaginary axis is as large as possible, thereby improving the air volume of the ambient air mixed with the heat exchange gas.
The air guiding member 130 may further include a guiding extension 133 extending from the front end edge of the annular air outlet 131 to the front, i.e. the distance between the guiding extension 133 and the imaginary axis increases gradually from the rear to the front, so as to increase the air supply area of the air guiding member 130.
The guide extension 133 may be disposed in smooth transition with the airflow channel of the front air guide to improve the smoothness of the airflow.
The guiding extension 133 may be configured to extend along a curve, and its included angle with the imaginary axis gradually increases, so as to further increase the air supply area of the air guiding member 130.
Fig. 5 is a schematic cross-sectional view of an air guiding member according to another embodiment of the invention. Referring to fig. 5, in other embodiments, the annular air outlet 131 may be formed by sandwiching the rearward sidewall and the inner peripheral wall of the annular section 131a thereof. The annular air outlet 132 may be formed by sandwiching the forward side wall and the inner peripheral wall of the annular section 132a thereof.
The rear end of the inner peripheral wall of the annular segment 131a may be disposed at the rear side of the front end edge of the rear-facing sidewall thereof to adjust the flow direction of the heat exchange gas in the annular segment 131a, thereby avoiding the gas from being blown out from the air outlet in disorder.
The inner circumferential wall of the annular segment 131a may be provided to be gradually expanded from rear to front, i.e., the distance from the imaginary axis to the inner circumferential wall gradually increases from rear to front to increase the supply area of the air guide member 130.
The inner peripheral wall of the annular segment 131a may be configured to extend along a curve, and an included angle between the inner peripheral wall and the imaginary axis is gradually increased, so as to further increase the air supply area of the air guiding member 130.
Fig. 6 is a schematic cross-sectional view of an air guiding member according to yet another embodiment of the invention. Referring to fig. 6, in still other embodiments, the annular air outlets 131 and 132 may be configured to gradually increase in width from a portion close to the air inlet section to a portion far from the air inlet section, so that the wind resistance of the portion of the annular section far from the air inlet section is smaller than that of the portion close to the air inlet section, and the air volume around the annular air outlet is more uniform. The minimum width of the annular air outlet may be 1/3 to 1/2, for example 1/3, 2/5 or 1/2, of the maximum width.
In the embodiment of fig. 4 to 6, the rear side edge of the annular air outlet 131 and the rear side edge of the annular air outlet 132 may be disposed outside the front side edge of the annular air outlet 131, i.e. when viewed from front to back, the annular air outlet 131 and the annular air outlet 132 may be blocked by the front side wall of the annular section 131a, so as to enhance the dust-proof effect of the air guiding member 130 and improve the aesthetic appearance of the indoor unit 100 of the cabinet air conditioner.
In other embodiments, the rear side edge of the annular air outlet 131 and the rear side edge of the annular air outlet 132 may be disposed inside the front side edge of the annular air outlet 131, that is, the annular air outlet 131 and the annular air outlet 132 may be directly observed from front to back, so that the air flows blown out from the annular air outlet 131 and the annular air outlet 132 flow forward more smoothly.
The cabinet air conditioner indoor unit 100 may further include a water pan 170 disposed below the lower heat exchanger 162. The water pan 170 is formed with a concave cavity opened upward for supporting the lower heat exchanger 162 and receiving condensed water flowing down from the upper heat exchanger 161 and the lower heat exchanger 162. The bottom wall of the cavity may be formed with a plurality of upwardly extending support protrusions, and the lower heat exchanger 162 may be disposed on the plurality of support protrusions to prevent the bottom of the lower heat exchanger 162 from being immersed in the condensed water.
The cabinet air conditioner indoor unit 100 may further include a wind deflector 180 disposed above the upper heat exchanger 161. The wind guard 180 is disposed to form a heat exchanging air inlet channel with the water pan 170.
A water guide member may be disposed between the upper heat exchanger 161 and the lower heat exchanger 162 to receive condensed water flowing down from the upper heat exchanger 161 and guide the condensed water to the water pan 170, so as to prevent the lower heat exchanger 162 from being in a humid environment even in a non-operating state.
In some embodiments, the blower fan 120 may include a scroll case 121 formed with a mounting opening, a centrifugal impeller 122 disposed in the scroll case 121, a driving motor 124 driving the centrifugal impeller 122 to rotate, a motor bracket 125 for fixing the driving motor 124, and a cover plate disposed at the mounting opening of the scroll case 121 and fixedly connected with the motor bracket 125.
The blower fan 140 may include a scroll case 141 formed with a mounting opening, a centrifugal impeller 142 disposed in the scroll case 141, a driving motor 144 driving the centrifugal impeller 142 to rotate, a motor bracket 145 for fixing the driving motor 144, and a cover plate disposed at the mounting opening of the scroll case 141 and fixedly connected with the motor bracket 145.
In particular, the blower inlets of the blower 120 and the blower 140 may be formed in the rear wall of the volute 121. The heat exchanging air inlet 1111 may be opened at two lateral side walls of the rear case 111. The upper heat exchanger 161 and the lower heat exchanger 162 may each include parallel sections extending in a lateral direction to increase a heat exchange area of the unit ambient air with the heat exchanger so that heat exchange is more sufficient.
The upper heat exchanger 161 and the lower heat exchanger 162 may further include two vertical sections extending perpendicular to the parallel sections from both lateral ends of the parallel sections thereof to further increase the heat exchange area per unit of ambient air with the heat exchanger. The two vertical sections can be arranged to extend forwards from the two transverse ends of the parallel section, so that the distance between the air inlet of the fan and the parallel section is increased and the air inlet resistance is reduced under the condition that the gravity center of the air supply fan is not changed.
The air blower 120, the air blower 140, the upper air guiding member 130, the lower air guiding member 150, the upper heat exchanger 161, the lower heat exchanger 162, the water pan 170 and the wind deflector 180 may be fixedly connected to the casing through sheet metal parts.
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 (9)

1. An indoor unit of a cabinet air conditioner, comprising:
the shell is provided with a heat exchange air inlet, a plurality of mixed air outlets distributed along the vertical direction and a plurality of natural air inlets correspondingly distributed with the plurality of mixed air outlets, wherein the plurality of mixed air outlets and the plurality of natural air inlets are respectively arranged on a front panel and a back panel of the shell;
a plurality of air supply fans configured to suck ambient air from the surrounding environment of the heat exchange air inlet and to cause the air to flow toward the plurality of mixing air outlets, respectively;
the indoor heat exchanger is arranged on an air inlet flow path between the heat exchange air inlet and the plurality of air supply fans; and
the air guiding members are configured to guide air flows blown by the air supplying fans to corresponding mixing air outlets respectively, at least one annular air outlet extending around the front-rear direction is formed in each air guiding member, and the annular air outlets are configured to blow air flows forwards so as to promote ambient air around the natural air inlets to flow forwards and mix with heat exchange air blown by the annular air outlets; wherein the method comprises the steps of
The indoor heat exchanger comprises a plurality of sub heat exchangers which are arranged in parallel, and the plurality of sub heat exchangers are respectively arranged on an air inlet flow path between the heat exchange air inlet and the plurality of air supply fans;
each air guide component comprises a front air guide part and a rear air guide part, wherein the air flow channels of the front air guide part and the rear air guide part are mutually independent; and is also provided with
The front side air guide part and the rear side air guide part are respectively provided with the annular air outlets so that air flow blown out by the front side annular air outlets is guided to promote air flow blown out by the rear side annular air outlets to flow forwards;
the airflow channel of the front air guiding part comprises an annular section extending around an axis, the airflow channel of the rear air guiding part also comprises an annular section extending around the axis, the annular air outlet of the front air guiding part is formed on one side of the annular section facing the axis, and the annular air outlet of the rear air guiding part is also formed on one side of the annular section facing the axis;
the air flow channel of the front air guide part comprises an air inlet section for being in butt joint with a fan air outlet of the air supply fan, the air flow channel of the rear air guide part also comprises an air inlet section for being in butt joint with the fan air outlet of the air supply fan, and the air inlet section is used for prolonging an air inlet path from the air supply fan to the annular section so that the air flow velocity in the annular section is more uniform;
the annular air outlet is arranged to gradually increase in width from a part close to the air inlet section to a part far away from the air inlet section.
2. The cabinet air conditioner indoor unit of claim 1, wherein
The rear wall of the airflow channel of the front air guide part is the front wall of the airflow channel of the rear air guide part, so that the airflow flowing rules in the front air guide part and the rear air guide part are consistent, and the production cost is reduced.
3. The cabinet air conditioner indoor unit of claim 1, wherein
The ratio of the air outlet area to the air inlet area of the front air guide part is smaller than the ratio of the air outlet area to the air inlet area of the rear air guide part; and/or
The area of the air inlet of the front air guide part is smaller than that of the air inlet of the rear air guide part.
4. The cabinet air conditioner indoor unit of claim 1, wherein
The plurality of air supply fans are centrifugal fans, and fan air inlets of the plurality of air supply fans are formed in the rear wall of the volute; and is also provided with
The heat exchange air inlet is formed in two lateral side walls of the shell, and each sub heat exchanger comprises a parallel section extending along the lateral direction, so that the heat exchange area of the heat exchanger and the ambient air is increased.
5. The cabinet air conditioner indoor unit of claim 4, wherein each of the sub heat exchangers further comprises:
the two vertical sections are respectively arranged to extend from the two transverse ends of the parallel section to be perpendicular to the parallel section, so that the heat exchange area of the heat exchanger and the ambient air is further increased.
6. The cabinet air conditioner indoor unit of claim 1, further comprising:
the water receiving disc is provided with a concave cavity with an upward opening, is arranged below the plurality of sub heat exchangers, and is used for supporting the sub heat exchanger positioned at the lowest part and receiving condensed water flowing down from the plurality of sub heat exchangers; wherein the method comprises the steps of
The bottom wall of the concave cavity is provided with a plurality of supporting bulges extending upwards, and the bottommost sub heat exchanger is arranged on the supporting bulges so as to prevent the bottom of the sub heat exchanger from being immersed in condensed water.
7. The cabinet air conditioner indoor unit of claim 6, further comprising:
the wind shield is arranged above the plurality of sub heat exchangers and is clamped with the water receiving disc to form a heat exchange air inlet channel.
8. The cabinet air conditioner indoor unit of claim 1, wherein
The number of the mixing air outlet, the natural air outlet, the air supply fan, the air guide component and the sub heat exchanger are two; and is also provided with
The two air supply fans are arranged between the two air guide components.
9. The cabinet air conditioner indoor unit of claim 8, wherein
The air supply fan for blowing air flow to the mixing air outlet positioned at the upper side is configured to work when the indoor heat exchanger receives a refrigeration instruction; and is also provided with
The air supply fan for blowing air flow to the mixing air outlet positioned at the lower side is configured to work when the indoor heat exchanger receives a heating instruction.
CN201811044010.XA 2018-09-07 2018-09-07 Indoor unit of cabinet air conditioner Active CN110887114B (en)

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