CN110657496A - Air conditioner indoor unit - Google Patents
Air conditioner indoor unit Download PDFInfo
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- CN110657496A CN110657496A CN201810698117.XA CN201810698117A CN110657496A CN 110657496 A CN110657496 A CN 110657496A CN 201810698117 A CN201810698117 A CN 201810698117A CN 110657496 A CN110657496 A CN 110657496A
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- air inlet
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
- F24F1/0007—Indoor units, e.g. fan coil units
- F24F1/0018—Indoor units, e.g. fan coil units characterised by fans
- F24F1/0029—Axial fans
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
- F24F1/0007—Indoor units, e.g. fan coil units
- F24F1/0018—Indoor units, e.g. fan coil units characterised by fans
- F24F1/0033—Indoor units, e.g. fan coil units characterised by fans having two or more fans
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
- F24F11/72—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure
- F24F11/74—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity
- F24F11/77—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity by controlling the speed of ventilators
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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
- F24F13/24—Means for preventing or suppressing noise
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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
- F24F13/24—Means for preventing or suppressing noise
- F24F2013/247—Active noise-suppression
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
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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)
- Fluid Mechanics (AREA)
- Air-Conditioning Room Units, And Self-Contained Units In General (AREA)
Abstract
The invention provides an air conditioner indoor unit, which comprises: the air conditioner comprises a shell, a fan blade; the lower fan assembly is arranged in the shell and corresponds to the position of the lower air inlet; the counter-rotating fan is arranged in an air channel formed between the upper air inlet and the air outlet; the heat exchanger is arranged in the shell, the heat exchanger is arranged between the lower fan assembly and the disrotatory fan, air flowing in from the lower air inlet sequentially passes through the lower fan assembly and the heat exchanger for heat exchange to form heat exchange air and then is discharged to the disrotatory fan, and the outdoor air flowing in from the upper air inlet and the heat exchange air are mixed by the disrotatory fan and then are discharged through the air outlet. By the technical scheme, the comfort can be improved on the premise of ensuring the room temperature regulation time and the air conditioning energy efficiency, and the noise can be reduced when the air conditioner works at a high wind volume.
Description
Technical Field
The invention relates to the technical field of air conditioners, in particular to an air conditioner indoor unit.
Background
Along with the improvement of the requirement of human beings on the living environment, the application of the air conditioner is more and more common, and along with the improvement of the requirement of people on the living quality, the performance requirement of the air conditioner is higher and higher. The working principle of the air conditioner is that indoor air is sucked into an indoor unit for heat exchange, and the air is sent back to the indoor unit after being cooled or heated.
The existing air conditioner at least has the following disadvantages: 1. the air conditioner after heat exchange has cold or hot outlet air and very poor comfort experience when being blown to people; if the temperature difference between the outlet air and the indoor air is reduced, which is usually realized by reducing the air volume, the energy efficiency of the air conditioner and the time for adjusting the room temperature are greatly deteriorated; 2. the noise is larger when the large air volume works, and especially the noise generated when the impeller rotates is larger.
Disclosure of Invention
The present invention is directed to solving at least one of the problems of the prior art or the related art.
In view of the above, an object of the present invention is to provide an air conditioner internal unit, which can improve comfort and reduce noise when operating with a large wind volume, while ensuring room temperature adjustment time and air conditioning energy efficiency.
In order to achieve the above object, a technical solution of the present invention provides an air conditioner indoor unit, including: the air conditioner comprises a shell, a fan blade; the lower fan assembly is arranged in the shell and corresponds to the position of the lower air inlet; the counter-rotating fan is arranged in an air channel formed between the upper air inlet and the air outlet; the heat exchanger is arranged in the shell, the heat exchanger is arranged between the lower fan assembly and the disrotatory fan, air flowing in from the lower air inlet sequentially passes through the lower fan assembly and the heat exchanger for heat exchange to form heat exchange air and then is discharged to the disrotatory fan, and the outdoor air flowing in from the upper air inlet and the heat exchange air are mixed by the disrotatory fan and then are discharged through the air outlet.
In this technical scheme, to the turbofan can carry out the intensive mixing with the outdoor air that flows in through last air inlet with the heat transfer air that forms after fan subassembly and the heat exchanger heat transfer down to discharge through the air outlet, thereby make air conditioner indoor unit exhaust air can not subcool or overheat, and then form the air that the temperature is moderate, blow to the room in the human body and feel not receive big difference in temperature, the travelling comfort is good. In addition, the mode of mixing outdoor air and heat exchange air is adopted, compared with the mode of reducing air volume, the energy efficiency of the air conditioner and the air temperature regulation speed of a room are guaranteed not to be influenced, and noise generated due to reduction of the rotating speed of the fan can be reduced.
Specifically, an air duct is formed between the upper air inlet and the air outlet, and meanwhile, air flowing into the shell through the lower air inlet flows into the air duct after heat exchange through the heat exchanger, and is mixed at the counter-rotating fan and then discharged to the indoor through the air outlet.
Preferably, in order to reduce the wind resistance when the airflow flows in the air duct, the upper air inlet, the counter-rotating fan and the air outlet are coaxial.
It can be understood that according to the setting position of the actual air conditioner internal unit, the positions of the upper air inlet and the air outlet can be flexibly adjusted, and the effect can be realized only by forming the air channel.
In the above technical solution, optionally, the casing is square, the heat exchanger is a plate heat exchanger, and the plate heat exchanger is obliquely disposed in the middle of the casing so that air flowing out of the lower fan assembly flows through the heat exchanger.
In the technical scheme, the heat exchanger is obliquely arranged in the shell, so that air flow in the shell can completely flow through the heat exchanger, the heat exchange area of the air flow and the heat exchanger can be increased, the heat exchanger and the air flow can fully exchange heat, and the heat exchange efficiency is improved.
Specifically, because the whole most of the circumstances of air conditioner internal unit leans on the wall setting, consequently prescribe a limit to the casing for square can increase and the wall between area of contact for air conditioner internal unit's fixed more stable, simultaneously, the type of prescribing a limit to the heat exchanger is that plate heat exchanger inclines simultaneously and locates the casing middle part, can make partial air all flow into the heat exchanger by fan subassembly down, mix the discharge with the air current that the last air inlet flowed in again after abundant heat transfer.
In the above technical solution, optionally, the method further includes: the disrotatory isolation board is arranged below the disrotatory fan, and a ventilation groove is formed in the disrotatory isolation board, wherein the ventilation groove is formed in one side, close to the upper air inlet, of the disrotatory isolation board, so that heat exchange air flows to the air inlet side of the disrotatory fan through the ventilation groove.
In the technical scheme, the counter-rotating partition plate can separate the heat exchanger from the counter-rotating fan and prevent heat exchange air from flowing through the air outlet side of the counter-rotating fan and then being discharged from the air outlet, so that the air discharged by an indoor unit of the air conditioner is prevented from being overcooled or overheated; set up the ventilation groove on the partition plate of disrotatory and can make the heat transfer air flow direction to the air inlet side of disrotatory fan, under the effect to the disrotatory fan, the outdoor air that gets into by last air inlet can carry out the intensive mixing with the heat transfer air and then discharge from the air outlet to the temperature that makes air conditioner internal unit exhaust air is moderate, improves user experience.
In the above technical solution, optionally, the downwind unit specifically includes: the volute is arranged in the shell, and at least one end of the volute is provided with an opening; the centrifugal impeller is arranged in the volute, and the air outlet direction of the centrifugal impeller faces the heat exchanger.
In the technical scheme, the centrifugal impeller positioned at the lower air inlet can guide indoor air to the volute and blow the indoor air to the heat exchanger through the opening on the volute, so that the air forms heat exchange air capable of adjusting the indoor temperature under the heat exchange effect of the heat exchanger.
It can be understood that in order to ensure the normal air inlet and outlet of the centrifugal impeller, the opening of the volute is the air inlet surface of the centrifugal impeller.
In the above technical solution, optionally, the lower air inlet specifically includes: at least one air inlet notch, every air inlet notch is located the one side of keeping away from the ventilation groove on axial direction.
In the technical scheme, a channel suitable for air flowing is formed between an air inlet notch on the shell and the ventilation groove, the heat exchanger is positioned in the channel, so that the heat exchanger can heat or refrigerate air, and then the air flows upwards to the air inlet side of the counter-rotating fan through the ventilation groove, and due to the existence of the upper air inlet, a part of outdoor air can flow in from the air inlet. Therefore, a part of outdoor air and a part of indoor air cooled or heated by the heat exchanger are fully mixed when passing through the counter-rotating fan, so that the phenomenon that overcooled or overheated air flows out of the air outlet and enters a room is avoided, and the comfort is improved.
In the above technical solution, optionally, there are at least two air inlet slots located at two adjacent sides of the housing.
In this technical scheme, the air inlet notch that is located the adjacent both sides of casing has increased the air inlet area of air intake down on the one hand, and on the other hand makes centrifugal impeller introduce the casing with indoor air from the equidirectional to improve the efficiency that air conditioner internal unit adjusted indoor temperature.
Preferably, the air inlet notch is arranged on the air inlet surface of the centrifugal impeller.
In the above technical solution, optionally, the method further includes: the filter screen is arranged at the lower air inlet.
In this technical scheme, locate the filter screen of air intake department down and can filter the indoor air that gets into by lower air intake, especially, according to the adsorption object difference of filter screen, can adsorb the harmful substance in the air to contain harmful substance and cause the injury to the human body in the air of avoiding air conditioner indoor unit exhaust, still can adsorb substances such as dust and the dander in the air, avoid blockking up centrifugal impeller and heat exchanger because of it piles up.
In the above technical solution, optionally, the spiral casing further includes a stopping step disposed at an opening of the spiral casing, the stopping step is disposed at one side of the lower air inlet, which is far away from the ventilation slot in the axial direction of the counter-rotating fan, and two ends of the plate heat exchanger respectively abut against the inner wall of the casing and the stopping step.
In the technical scheme, the stop step is used for supporting the heat exchanger and is matched with the inner wall of the shell, so that the heat exchanger can be obliquely arranged in the middle of the shell. The heat exchanger is obliquely arranged in the shell, so that air flow in the shell can completely flow through the heat exchanger, and the heat exchange area of the air flow and the heat exchanger can be increased, so that the heat exchanger and the air flow can fully exchange heat, and the heat exchange efficiency is improved.
In the above technical solution, optionally, the counter-rotating fan specifically includes: the axial fan comprises a first axial fan and a second axial fan which are arranged adjacently along the axial direction, wherein the rotating direction of the first axial fan is opposite to that of the second axial fan.
In this technical scheme, the counter-rotating fan comprises two axial fan, because the characteristics of counter-rotating fan are that the amount of wind is big under the low-speed, and the air-out field is adjustable, but the wind pressure is lower relatively, only relies on the resistance of very difficult overcoming whole interior machine system of counter-rotating fan, even reach through changing the design and improving the rotational speed, the noise can become very big. Therefore, the contra-rotating fan can realize the change of the air outlet field by adjusting the rotating speeds of the two axial flow fans. And the rotation directions of the two axial flow fans are opposite, so that the air at the air inlet side of the counter-rotating fan can be sucked to the air outlet, and the air at the air outlet side of the counter-rotating fan can flow at an accelerated speed, so that the air can be rapidly diffused to avoid directly blowing the air to a human body, or the air can be intensively and straightly blown out to improve the air supply distance.
In the above technical solution, optionally, the fan further includes a microcontroller electrically connected to the counter-rotating fan to adjust a rotation speed of the first axial flow fan and/or the second axial flow fan when receiving a control command.
In the technical scheme, the microcontroller can control the rotating speeds of the first axial flow fan and the second axial flow fan, so that air exhausted from an air outlet on an air conditioner indoor unit is rapidly diffused to avoid directly blowing a human body, or is intensively and straightly blown out to improve the air supply distance.
Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.
Drawings
Fig. 1 shows a schematic perspective view of an air conditioner indoor unit according to an embodiment of the present invention;
fig. 2 shows an internal structural view of an air conditioner internal unit according to an embodiment of the present invention;
fig. 3 is a schematic cross-sectional structural view of an air conditioner indoor unit according to an embodiment of the present invention;
wherein, the correspondence between the reference numbers and the component names in fig. 1 to 3 is:
10 casing, 102 lower inlet, 104 upper inlet, 106 outlet, 108 stop step, 20 lower fan assembly, 202 volute, 204 centrifugal impeller, 30 counter-rotating fan, 302 first axial fan,
304 second axial fan, 40 heat exchanger, 50 counter rotating insulation plate, 502 ventilation slot.
Detailed Description
So that the manner in which the above recited objects, features and advantages of the present invention can be understood in detail, a more particular description of the invention, briefly summarized above, may be had by reference to the embodiments thereof which are illustrated in the appended drawings. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflict.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those specifically described herein, and therefore the scope of the present invention is not limited by the specific embodiments disclosed below.
Some embodiments according to the invention are described below with reference to fig. 1 to 3.
Example 1
As shown in fig. 1 to 3, an air conditioner indoor unit according to an embodiment of the present invention includes: a lower air inlet 102 is formed at one end of the casing 10, and an upper air inlet 104 and an air outlet 106 are respectively formed at two sides of the other end of the casing 10; the lower fan assembly 20 is arranged in the shell 10 at a position corresponding to the lower air inlet 102; the counter-rotating fan 30 is arranged in an air channel formed between the upper air inlet 104 and the air outlet 106; and the heat exchanger 40 is arranged in the shell 10, the heat exchanger 40 is arranged between the lower fan assembly 20 and the counter-rotating fan 30, air flowing in from the lower air inlet 102 sequentially exchanges heat with the heat exchanger 40 through the lower fan assembly 20 to form heat exchange air, and then the heat exchange air is discharged to the counter-rotating fan 30, wherein the outdoor air flowing in through the upper air inlet 104 is mixed with the heat exchange air through the counter-rotating fan 30 and then discharged through the air outlet 106.
In this embodiment, the lower fan assembly 20 sucks the indoor air into the casing 10 from the lower air inlet 102, and flows to the heat exchanger 40 at a certain speed and pressure, when passing through the heat exchanger 40, the indoor air is cooled or heated to form heat exchange air, and then flows upward to the air inlet side of the counter-rotating fan 30, and the counter-rotating fan 30 can fully mix the heat exchange air with the outdoor air flowing in through the upper air inlet 104 and discharge the air through the air outlet 106, so that the air discharged from the indoor unit of the air conditioner is not overcooled or overheated, and further, air with moderate temperature is formed, and the air blown into the room is not subjected to large temperature difference, and the comfort is good. In addition, the mode of mixing the outdoor air and the heat exchange air is adopted, compared with the mode of reducing the air volume, the energy efficiency of the air conditioner and the air temperature regulation speed of a room are ensured not to be influenced, and the noise generated by the reduction of the rotating speed of the fan can be reduced.
Specifically, an air duct is formed between the upper air inlet 104 and the air outlet 106, and meanwhile, the air flowing into the housing 10 through the lower air inlet 102 exchanges heat with the heat exchanger 40 and flows into the air duct, and is mixed at the counter-rotating fan 30 and then discharged to the indoor through the air outlet 106.
Preferably, the upper air inlet 104, the counter-rotating fan 30 and the air outlet 106 are coaxial to reduce the wind resistance when the air flows in the wind channel.
It can be understood that the positions of the upper air inlet 104 and the air outlet 106 can be flexibly adjusted according to the setting position of the actual air conditioner internal unit, and the above effects can be realized only by forming an air duct.
Example 2
As shown in fig. 1 to 3, in an air conditioner internal unit according to another embodiment of the present invention, the air conditioner internal unit according to the above embodiment is adopted, a casing 10 of the air conditioner internal unit is square, a heat exchanger 40 is a plate heat exchanger 40, and the plate heat exchanger 40 is obliquely disposed in a middle portion of the casing 10, so that air flowing out of the lower fan assembly 20 flows through the heat exchanger 40.
In this embodiment, the heat exchanger 40 is obliquely disposed in the housing 10, so that the airflow in the housing 10 can completely flow through the heat exchanger 40, and the heat exchange area between the airflow and the heat exchanger 40 can be increased, so that the heat exchanger 40 can perform sufficient heat exchange with the airflow, and the heat exchange efficiency is improved.
Specifically, because the whole most of the circumstances of air conditioner internal unit leans on the wall setting, consequently prescribe a limit to casing 10 for square can increase and the wall between area of contact for air conditioner internal unit's fixed more stable, simultaneously, prescribe a limit to the type of heat exchanger 40 and locate casing 10 middle part for plate heat exchanger is slope simultaneously, can make partial air all flow into heat exchanger 40 by leeward subassembly 20, mix the discharge with the air current that last air inlet 104 flowed in after abundant heat transfer.
Example 3
As shown in fig. 3, in the air conditioner internal unit according to the further embodiment of the present invention, by using the air conditioner internal unit according to any of the above embodiments, the counter-rotating isolation plate 50 is disposed below the counter-rotating fan 30, and the counter-rotating isolation plate 50 is provided with the ventilation slot 502, wherein the ventilation slot 502 is disposed on one side of the counter-rotating isolation plate 50 close to the upper air inlet 104, so that the heat-exchange air flows to the air inlet side of the counter-rotating fan 30 through the ventilation slot 502.
In this embodiment, the counter-rotating partition plate 50 can separate the heat exchanger 40 from the counter-rotating fan 30, and prevent the heat-exchanged air from flowing through the air outlet side of the counter-rotating fan 30 and then being discharged from the air outlet 106, so as to prevent the air discharged from the air conditioner indoor unit from being too cold or too hot; set up ventilation groove 502 on counter-rotating division board 50 and can make heat transfer air flow direction to counter-rotating fan 30's air inlet side, under counter-rotating fan 30's effect, the outdoor air that gets into by last air inlet 104 can carry out the intensive mixing with heat transfer air and then discharge from air outlet 106 to the temperature that makes air conditioner internal unit exhaust air is moderate, improves user experience.
Example 4
As shown in fig. 2 and fig. 3, in the air conditioner indoor unit according to the fourth embodiment of the present invention, when the air conditioner indoor unit according to any one of the embodiments is adopted, the down-fan assembly 20 specifically includes: a volute 202 arranged in the housing 10, wherein at least one end of the volute 202 is provided with an opening; the centrifugal impeller 204 is disposed in the volute 202, and an air outlet direction of the centrifugal impeller 204 faces the heat exchanger 40.
In this embodiment, the centrifugal impeller 204 at the lower air inlet 102 can guide the indoor air to the volute 202 and blow the indoor air to the heat exchanger 40 through the opening on the volute 202, so that the air forms heat exchange air capable of adjusting the indoor temperature under the heat exchange action of the heat exchanger 40.
It can be understood that, in order to ensure the normal air inlet and outlet of the centrifugal impeller 204, the opening of the volute 202 is the air inlet surface of the centrifugal impeller 204.
Example 5
As shown in fig. 1 and fig. 2, in the air conditioner internal unit according to the fifth embodiment of the present invention, when the air conditioner internal unit according to any one of the embodiments is adopted, the lower air inlet 102 specifically includes: at least one air inlet slot, each air inlet slot located on a side away from the ventilation slot 502 in the axial direction.
In this embodiment, a passage for air to flow is formed between the air inlet slot opening of the casing 10 and the ventilation slot 502, and the heat exchanger 40 is located in the passage so that the heat exchanger 40 can heat or cool the air and then flow upward to the air inlet side of the counter-rotating fan 30 through the ventilation slot 502, and a part of the outdoor air flows in due to the existence of the upper air inlet opening. Therefore, a part of the outdoor air and a part of the indoor air cooled or heated by the heat exchanger 40 are sufficiently mixed when passing through the counter-rotating fan 30, so that the air which is too cold or too hot is prevented from flowing out of the air outlet 106 and entering the room, and the comfort is improved.
Further, there are at least two air inlet slots located on adjacent sides of the housing 10.
In this embodiment, the air inlet slots on two adjacent sides of the casing 10 increase the air inlet area of the lower air inlet 102, and the centrifugal impeller 204 introduces the indoor air into the casing 10 from different directions, thereby improving the indoor temperature adjusting efficiency of the indoor unit of the air conditioner.
Preferably, the air inlet slot is arranged on the air inlet surface of the centrifugal impeller 204.
Example 6
In the air conditioner indoor unit according to the sixth embodiment of the present invention, a filter screen (not shown) is disposed at the lower air inlet 102.
In this embodiment, the filter screen disposed at the lower air inlet 102 can filter the indoor air entering from the lower air inlet 102, and particularly, harmful substances in the air can be adsorbed according to different adsorption objects of the filter screen, so that the air exhausted by the air conditioner indoor unit is prevented from containing harmful substances to cause harm to human body; and substances such as dust and swarf in the indoor air can be adsorbed, so that the centrifugal impeller 204 and the heat exchanger 40 are prevented from being blocked due to accumulation of the substances.
It can be understood that, in order to make the outdoor air entering from the upper air inlet 104 clean and fresh, and at the same time avoid blocking the counter-rotating fan 30 by dust and lint in the outdoor air, a filter screen may be disposed at the upper air inlet 104, and the filter screens at the upper air inlet 104 and the lower air inlet 102 may be made of the same material or different materials.
Example 7
As shown in fig. 3, the air conditioner internal unit according to the seventh embodiment of the present invention, which adopts the air conditioner internal unit according to any of the above embodiments, further includes a stop step 108, which is disposed at the opening of the volute 202, the stop step 108 is disposed at one side of the lower air inlet 102 away from the ventilation slot 502 in the axial direction of the counter-rotating fan 30, and two ends of the plate heat exchanger 40 respectively abut against the inner wall of the casing 10 and the stop step 108.
In this embodiment, the abutment step 108 serves to support the heat exchanger 40 and cooperates with the inner wall of the casing 10 to enable the heat exchanger 40 to be placed obliquely at the middle of the casing 10. The heat exchanger 40 is obliquely arranged in the housing 10, so that the airflow in the housing 10 can completely flow through the heat exchanger 40, and the heat exchange area between the airflow and the heat exchanger 40 can be increased, so that the heat exchanger 40 and the airflow can perform sufficient heat exchange, and the heat exchange efficiency is improved.
Example 8
As shown in fig. 2 and fig. 3, an air conditioner indoor unit according to an eighth embodiment of the present invention adopts any one of the above embodiments, and the counter-rotating fan 30 specifically includes: the first axial fan 302 and the second axial fan 304 are adjacently arranged along the axial direction, wherein the rotating direction of the first axial fan 302 is opposite to that of the second axial fan 304.
In this embodiment, the counter-rotating fan 30 is composed of two axial fans, and since the counter-rotating fan 30 is characterized by large air volume and adjustable air outlet field at low rotation speed, the air pressure is relatively low, and the resistance of the whole internal machine system is difficult to overcome only by the counter-rotating fan 30, even if the noise is increased by changing the design and increasing the rotation speed, the noise becomes very large. Therefore, the counter-rotating fan 30 can realize the change of the wind outlet field by adjusting the rotating speeds of the two axial flow fans. And the rotation directions of the two axial fans are opposite, so that the air on the air inlet side of the counter-rotating fan 30 can be sucked to the air outlet 106, the air on the air outlet side of the counter-rotating fan 30 can flow at an accelerated speed, and the air can be rapidly diffused to avoid directly blowing the air to a human body or be intensively and straightly blown out to improve the air supply distance.
Further, a microcontroller (not shown) is included and electrically connected to the counter-rotating fan 30 for adjusting the rotation speed of the first axial fan 302 and/or the second axial fan 304 upon receiving a control command.
In this embodiment, the microcontroller can control the rotation speed of the first axial fan 302 and the second axial fan 304, so that the air discharged from the air outlet 106 of the air conditioner indoor unit can be quickly diffused to avoid directly blowing the human body, or can be intensively and straightly blown out to increase the air supply distance.
In this embodiment, the microcontroller can directly issue a control command to control the rotational speed of the first axial fan 302 and/or the second axial fan 304; the rotating speed of the first axial fan 302 and/or the second axial fan 304 can also be adjusted by a preset gear arranged in the microcontroller, so that the effect that air can be quickly diffused to avoid directly blowing the human body or be intensively and straightly blown out to improve the air supply distance can be realized.
Among the two axial fans with opposite rotation directions, when the rotation speed of the axial fan on the air inlet side of the counter-rotating fan 30 is higher than that of the axial fan on the air outlet side, air can be rapidly diffused when being discharged from the air outlet 106 so as to avoid directly blowing the human body; when the rotating speed of the axial flow fan on the air inlet side of the counter-rotating fan 30 is less than that of the axial flow fan on the air outlet side, air can be intensively and straightly blown out to improve the air supply distance when being discharged from the air outlet 106, so that the experience effect of a user is improved.
The technical scheme of the present invention is described in detail above with reference to the accompanying drawings, and according to the technical scheme of the present invention, indoor air is sucked into the casing 10 from the lower air inlet 102 by the lower air blower assembly 20 and flows to the heat exchanger 40 at a certain speed and pressure, when passing through the heat exchanger 40, the indoor air is cooled or heated to form heat exchange air, and then flows upward to the air inlet side of the counter-rotating fan 30, and the counter-rotating fan 30 can fully mix the heat exchange air with outdoor air flowing in through the upper air inlet 104 and discharge the air through the air outlet 106, so that air discharged from the indoor unit of the air conditioner is not overcooled or overheated, air with moderate temperature is formed, and the air blown into a room is not subjected to a large temperature difference by human bodies, and comfort is good. In addition, the mode of mixing the outdoor air and the heat exchange air is adopted, compared with the mode of reducing the air volume, the energy efficiency of the air conditioner and the air temperature regulation speed of a room are ensured not to be influenced, and the noise generated by the reduction of the rotating speed of the fan can be reduced.
In the present invention, the terms "first", "second", and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance; the term "plurality" means two or more unless expressly limited otherwise. The terms "mounted," "connected," "fixed," and the like are to be construed broadly, and for example, "connected" may be a fixed connection, a removable connection, or an integral connection; "coupled" may be direct or indirect through an intermediary. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "left", "right", "front", "rear", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the referred device or unit must have a specific direction, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.
In the description herein, the description of the terms "one embodiment," "some embodiments," "specific embodiments," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. An air conditioner indoor unit, characterized by comprising:
the air conditioner comprises a shell, a fan body and a fan, wherein a lower air inlet is formed in one end of the shell, and an upper air inlet and an air outlet are formed in two sides of the other end of the shell respectively;
the lower fan assembly is arranged in the shell and corresponds to the position of the lower air inlet;
the counter-rotating fan is arranged in an air channel formed between the upper air inlet and the air outlet;
the heat exchanger is arranged in the shell, the heat exchanger is arranged between the lower fan assembly and the counter-rotating fan, air flowing in from the lower air inlet sequentially passes through the lower fan assembly and the heat exchanger for heat exchange to form heat exchange air, and then the heat exchange air is discharged to the counter-rotating fan,
and the outdoor air flowing in through the upper air inlet and the heat exchange air are mixed by the counter-rotating fan and then are discharged through the air outlet.
2. The indoor unit of claim 1, wherein the casing is square, the heat exchanger is a plate heat exchanger, and the plate heat exchanger is obliquely arranged in the middle of the casing, so that the air flowing out of the downer assembly completely flows through the heat exchanger.
3. An indoor unit for an air conditioner according to claim 2, further comprising:
the disrotatory isolation plate is arranged below the disrotatory fan, and a ventilation groove is arranged on the disrotatory isolation plate,
the ventilation groove is formed in one side, close to the upper air inlet, of the counter-rotating isolation plate, so that the heat exchange air flows to the air inlet side of the counter-rotating fan through the ventilation groove.
4. The indoor unit of an air conditioner according to claim 3, wherein the lower fan assembly specifically comprises:
the volute is arranged in the shell, and at least one end of the volute is provided with an opening;
the centrifugal impeller is arranged in the volute, and the air outlet direction of the centrifugal impeller faces the heat exchanger.
5. The indoor unit of an air conditioner according to claim 4, wherein the lower air inlet specifically comprises:
at least one air inlet notch, every the air inlet notch is located in the axial direction and is kept away from one side of ventilation groove.
6. An indoor unit according to claim 5, wherein at least two of the air inlet slots are located on adjacent sides of the casing.
7. An indoor unit for an air conditioner according to claim 5, further comprising:
and the filter screen is arranged at the lower air inlet.
8. An indoor unit for an air conditioner according to claim 4, further comprising:
the stopping step is arranged at the opening of the volute, the stopping step is arranged at one side of the ventilation groove far away from the axial direction of the counter-rotating fan at the lower air inlet, and two ends of the plate-type heat exchanger respectively abut against the inner wall of the shell and the stopping step.
9. The indoor unit of an air conditioner according to any one of claims 1 to 8, wherein the counter-rotating fan specifically comprises: the fan comprises a first axial flow fan and a second axial flow fan which are arranged adjacently along the axial direction, wherein the rotating direction of the first axial flow fan is opposite to that of the second axial flow fan.
10. An indoor unit for an air conditioner according to claim 9, further comprising:
and the microcontroller is electrically connected with the counter-rotating fan so as to adjust the rotating speed of the first axial flow fan and/or the second axial flow fan when receiving a control command.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810698117.XA CN110657496A (en) | 2018-06-29 | 2018-06-29 | Air conditioner indoor unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810698117.XA CN110657496A (en) | 2018-06-29 | 2018-06-29 | Air conditioner indoor unit |
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| Publication Number | Publication Date |
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| CN110657496A true CN110657496A (en) | 2020-01-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201810698117.XA Pending CN110657496A (en) | 2018-06-29 | 2018-06-29 | Air conditioner indoor unit |
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| CN106968973A (en) * | 2017-05-09 | 2017-07-21 | 美的集团股份有限公司 | Axial flow blower |
| CN107514696A (en) * | 2017-08-18 | 2017-12-26 | 广东美的制冷设备有限公司 | Floor air conditioner |
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| KR101191414B1 (en) * | 2009-08-18 | 2012-10-16 | 위니아만도 주식회사 | Air mix type air conditioner |
| KR20140028191A (en) * | 2012-08-24 | 2014-03-10 | 삼성전자주식회사 | Indoor unit of air conditioner |
| CN103604163A (en) * | 2013-07-16 | 2014-02-26 | 海尔集团公司 | Vertical air conditioner |
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