CN216203814U - Floor type air conditioner indoor unit - Google Patents

Abstract

The utility model provides a floor type air conditioner indoor unit which comprises a shell, wherein the shell comprises a bottom plate and an air outlet, the air outlet is arranged at one end, far away from the bottom plate, of the shell, the distance H between the air outlet and the bottom plate is 1.8-2.0 m, the air outlet is provided with a first end and a second end which are transversely opposite, and the distance a between the first end and the second end is larger than the vertical height b of the air outlet. According to the floor type air conditioner indoor unit, the distance between the air outlet and the bottom plate and the size of the air outlet are set, so that the coanda effect is formed between the air sent out by the air outlet and the ceiling, the air sent out by the air outlet can move forwards along the wall of the ceiling, the air supply distance is greatly increased, the sent air is enabled to circulate greatly around a room, the convection of cold air and hot air is increased, the uniformity of the temperature of each part of an indoor space is improved, the phenomenon that the air with large air volume and high air speed sent out by the air outlet directly blows a human body is avoided, and the user experience is improved.

Description

Floor type air conditioner indoor unit

Technical Field

The utility model relates to the technical field of air conditioning, in particular to a floor type air conditioner indoor unit.

Background

The air conditioner is provided with the air outlet on the machine body so as to supply air to the indoor space, and therefore the effect of adjusting the temperature of the indoor space is achieved.

However, the air supply distance of the conventional air conditioner is short, so that the temperature difference of each part of the indoor space is large, and the temperature is uneven. When blowing cold air, the local amount of wind that is close to the air-conditioning outlet is big, and the temperature is low, and the local amount of wind far away from the air-conditioning outlet is little, and the temperature is high, if want nice and cool sensation, the people need stand to the place nearer apart from the air outlet, but on cold wind can directly blow the people health like this, not only the amount of wind is big, and the wind speed is high, makes the human body feel uncomfortable, and the body surface temperature scatters and disappears very fast moreover. When hot air is blown, the conditions of large air volume, high air speed and high temperature at the place close to the air outlet of the air conditioner, small air volume and low temperature at the place far away from the air outlet of the air conditioner can also occur.

Disclosure of Invention

In order to solve the above technical problems, an object of the present invention is to provide a floor type air conditioner indoor unit, which solves the problems of short air supply distance and uneven temperature in various indoor spaces of the existing air conditioner.

In order to achieve one of the above objectives of the present invention, an embodiment of the present invention provides a floor type air conditioner indoor unit, which includes a casing, the casing includes a bottom plate and an air outlet, the air outlet is disposed at an end of the casing away from the bottom plate, a distance H between the air outlet and the bottom plate is 1.8-2.0 m, the air outlet has a first end and a second end which are transversely opposite to each other, and a distance a between the first end and the second end is greater than a vertical height b of the air outlet.

In a further improvement of an embodiment of the present invention, the housing is cylindrical, the air outlet is arc-shaped and is disposed coaxially with the housing, and a central angle of the air outlet is 100 to 120 °.

As a further improvement of an embodiment of the utility model, the vertical height b is 50-80 mm.

As a further improvement of an embodiment of the present invention, the floor type air-conditioning indoor unit further includes a pair of air deflectors, a pivot shaft is disposed on a transverse edge of each air deflector, the air outlet has an upper side and a lower side which are vertically disposed opposite to each other, and the pair of air deflectors are pivotally connected to the upper side and the lower side through respective pivot shafts.

As a further improvement of an embodiment of the present invention, the floor-type air-conditioning indoor unit further includes a pair of air deflector driving mechanisms, and the pair of air deflector driving mechanisms are respectively connected to the pair of air deflectors and respectively drive the pair of air deflectors to rotate.

As a further improvement of an embodiment of the present invention, the air guiding plate driving mechanism includes a motor, a first gear, a second gear engaged with the first gear, a rocker arm coaxially connected with the second gear, and a connecting arm connected with the air guiding plate, the motor is connected with the first gear and drives the first gear to rotate, the number of teeth of the first gear is less than the number of teeth of the second gear, the rocker arm is provided with a sliding slot, one end of the connecting arm away from the air guiding plate is provided with a protruding block, and the protruding block is clamped in the sliding slot and can slide along the sliding slot.

As a further improvement of an embodiment of the present invention, the floor type air conditioning indoor unit further includes an installation portion, the installation portion includes a first vertical plate close to the air outlet and a second vertical plate far away from the air outlet, the first vertical plate and the second vertical plate are transversely disposed opposite to each other with an installation cavity formed therebetween, the motor, the first gear and the second gear are located in the installation cavity, the rocker arm and the connecting arm are located in the air outlet, and the second gear and the rocker arm are connected by a fixed shaft that traverses the first vertical plate.

As a further improvement of an embodiment of the present invention, the pair of air deflectors has a closing position for closing the air outlet, and in the closing position, ends of the pair of air deflectors, which are away from the respective pivot shafts, contact each other.

As a further improvement of an embodiment of the present invention, the casing includes an outer casing and an inner casing located in the outer casing, the air outlet is disposed in the inner casing, the outer casing is provided with an air window, the air outlet is exposed in the air window, and the floor type air conditioning indoor unit further includes an inner casing driving mechanism, and the inner casing driving mechanism drives the inner casing to lift relative to the outer casing.

As a further improvement of an embodiment of the present invention, the inner housing driving mechanism drives the inner housing to rotate relative to the outer housing.

Compared with the prior art, the utility model has the following beneficial effects: according to the floor type air conditioner indoor unit, the distance between the air outlet and the bottom plate and the size of the air outlet are set, so that the coanda effect is formed between the air sent out by the air outlet and the ceiling, the air sent out by the air outlet can move forwards along the wall of the ceiling, the air supply distance is greatly increased, the sent air is enabled to circulate greatly around a room, the convection of cold air and hot air is increased, the uniformity of the temperature of each part of an indoor space is improved, the phenomenon that the air with large air volume and high air speed sent out by the air outlet directly blows a human body is avoided, and the user experience is improved.

Drawings

Fig. 1 is a schematic perspective view of an indoor unit of an air conditioner according to an embodiment of the present invention;

fig. 2 is a front view of an indoor unit of an air conditioner according to an embodiment of the present invention;

FIG. 3 is a longitudinal sectional view taken along line A-A of FIG. 2;

FIG. 4 is an enlarged view of portion B of FIG. 3;

FIG. 5 is an enlarged view of portion C of FIG. 3;

FIG. 6 is a longitudinal sectional view taken along line D-D of FIG. 2;

FIG. 7 is a longitudinal sectional view taken along line E-E in FIG. 2;

fig. 8 is a schematic partial structural view of an indoor unit of an air conditioner according to an embodiment of the present invention;

fig. 9 is a schematic structural view of an air deflector of an outlet of an air conditioner according to another embodiment of the present invention;

FIG. 10 is a schematic view of the structure of FIG. 9 from another angle;

FIG. 11 is a longitudinal sectional view taken along line F-F in FIG. 10;

FIG. 12 is an enlarged view of the portion G of FIG. 11;

FIG. 13 is a partial structural view of an installation portion of an air deflector according to another embodiment of the present invention;

fig. 14 is a schematic view of the structure of fig. 13 at another angle.

Detailed Description

The utility model will be described in detail hereinafter with reference to specific embodiments shown in the drawings.

In the various drawings of the present invention, certain dimensions of structures or portions are exaggerated relative to other structures or portions for ease of illustration and, therefore, are used only to illustrate the basic structure of the subject matter of the present invention.

It will be understood that, although the terms first, second, third, fourth, etc. may be used herein to describe various elements or structures, these described elements should not be limited by these terms. These terms are only used to distinguish these descriptive objects from one another.

Referring to fig. 1 to 14, an air conditioner according to an embodiment of the present invention includes an indoor unit and an outdoor unit. The indoor unit comprises a shell 100, the shell 100 is provided with an air duct, the air duct comprises an air return duct 1, the shell 100 is further provided with an air return opening 11, an air outlet 3 and an evaporation cavity 2 communicated with the air return opening 11 and the air outlet 3, and the air return opening 11 is an inlet of the air return duct 1.

The air conditioner further includes:

the first heat exchange system comprises a first evaporator 4, a water tank 5 and a water-cooling heat exchanger 21, wherein the first evaporator 4 is connected with a compressor and exchanges heat with the water tank 5, the water tank 5 is communicated with the water-cooling heat exchanger 21, and the water-cooling heat exchanger 21 is arranged in the evaporation cavity 2;

and the second heat exchange system comprises a second evaporator 22 connected with the compressor, and the second evaporator 22 is arranged in the evaporation cavity 2.

Thus, the first heat exchange system exchanges heat with the water tank 5 through the first evaporator 4, the water in the water tank 5 is recycled to flow in the water-cooled heat exchanger 21, and the air in the air return duct 1 exchanges heat with the water-cooled heat exchanger 21 and then is sent out from the air outlet 3, so that on one hand, the temperature of the air sent out from the air outlet 3 can not be overcooled or overheated, the user can feel comfortable as natural wind, and particularly the bone-piercing cold feeling caused by directly blowing the cold energy generated by the evaporator to the human body through the air outlet 3 when the air conditioner is refrigerating is avoided, on the other hand, the water temperature in the water-cooled heat exchanger 21 is stable and higher than the condensation temperature of the air, so that the humidity of the air can not be reduced when the air passes through the water-cooled heat exchanger 21, the reduction of the indoor humidity caused by the condensation of the moisture in the air on the surface of the evaporator is avoided, and in addition, the specific heat capacity of the water is far greater than that of the air, therefore, the air outlet temperature can be prevented from greatly fluctuating due to frequent shutdown of the compressor, defrosting of the evaporator and the like, the user experience is improved, and the health is facilitated; in addition, the second heat exchange system can be precooled quickly, so that the indoor temperature is reduced quickly; through the setting of two heat exchange systems, which heat exchange system can be selected according to actual need to improve the intelligence and the functionality of air conditioner, improved user's use and experienced.

Wherein, water tank 5 is the holding water tank to reduce the heat loss of the water in water tank 5, specifically, water tank 5 includes outer box, interior box and is located outer box with the foaming layer between the interior box. Preferably, the first evaporator 4 is disposed between the outer case and the inner case and wound on an outer wall surface of the inner case. The water tank 5 is provided with a water changing inlet and a water changing outlet, the water-cooled heat exchanger 21 is provided with a water inlet and a water outlet, the water inlet is connected with the water changing outlet, and the water outlet is connected with the water changing inlet, so that water circularly flows between the water tank 5 and the water-cooled heat exchanger 21, and cold or heat generated by the first evaporator 4 is sent to the water-cooled heat exchanger 21.

The volume of water tank 5 sets up to 80 ~ 100L usually, here, water tank 5 has still acted as air conditioner heat transfer system's temperature damping, can avoid because the compressor frequently stops the rerailing and the air-out temperature that reasons such as evaporimeter defrosting lead to fluctuate by a wide margin to the stability of the air-out temperature of air outlet 3 has been guaranteed.

Furthermore, the first heat exchange system and the second heat exchange system are arranged in parallel, so that the first heat exchange system and the second heat exchange system can be controlled independently.

Preferably, the first heat exchange system and the second heat exchange system share one compressor, and the flow direction of the refrigerant in the refrigeration pipeline is controlled through a stop valve, so that the structure of the air conditioner is simplified, and the energy consumption and the cost are saved.

Further, the air conditioner has a first operation mode, a second operation mode and a third operation mode, and the first operation mode is set as follows: only the second heat exchange system is operated; the second working mode is set as follows: the second heat exchange system is operated while the first evaporator 4 is operated; the third operating mode is set to operate only the first heat exchange system. Under the first working mode, the indoor temperature can be quickly adjusted; in the second working mode, the first evaporator 4 exchanges heat with the water tank 5, so as to adjust the temperature of water in the water tank 5; in the third working mode, the temperature of the air sent out from the air outlet 3 during refrigeration is higher than that of the cold generated by the evaporator directly blown out from the air outlet 3, so that the body feeling discomfort caused by direct blowing of the supercooled air to a human body is avoided.

Further, the evaporation cavity 2 is formed around the air return duct 1, the air return opening 11 and the air outlet 3 are located on the same side of the evaporation cavity 2, a cavity wall 6 for separating the air return duct 1 and the evaporator cavity is further arranged in the shell 100, the cavity wall 6 is provided with a first air opening 61 for communicating the air return duct 1 and the evaporator cavity, the first air opening 61 is located between the second evaporator 22 and the water-cooled heat exchanger 21, and the shell 100 is further provided with a first air door 62 for opening or closing the first air opening 61.

Referring to fig. 3, a first partition 12 is transversely disposed in the return air duct 1, the first partition 12 has a closed state and an open state, in the closed state, the first partition 12 isolates the return air duct 1 into a first area 123 and a second area 124, and in the open state, the first area 123 and the second area 124 are communicated.

The evaporation chamber 2 is provided with a second partition 23 transversely, the second partition 23 has a closed state and an open state, when the second partition 23 is in the closed state, the evaporation chamber 2 is isolated into a third area 24 and a fourth area 25, the water-cooled heat exchanger 21 is positioned in the third area 24, the second evaporator 4 is positioned in the fourth area 25, and when the second partition is in the open state, the third area 24 is communicated with the fourth area 25.

Therefore, the air passages of the first heat exchange system and the second heat exchange system can be separated, so that the heat exchange effect of the air conditioner is realized.

In addition, referring to fig. 8, the cavity wall 6 is further provided with a second air inlet 63, and the second air inlet 63 is disposed at an end of the air return duct 1 far away from the air return opening 11, so that air can enter the evaporation cavity 2 from the air return duct 1 through the second air inlet 63.

Preferably, in the present embodiment, the air return opening 11 and the air outlet 3 are both located at the upper portion of the casing 100, the water-cooled heat exchanger 21 is disposed above the second evaporator 22, and the first air opening 61 is located above the first partition 12 and the second partition 23. Thus, the air path length of the air conditioner executing the second working mode can be shortened, and the temperature loss of the air path section of the air which is sent to the air outlet 3 after the air exchanges heat with the water-cooled heat exchanger 21 is reduced; in addition, when the air conditioner executes the first working mode, the air passing through the second evaporator 22 also passes through the water-cooled heat exchanger 21, so that the water-cooled heat exchanger 21 can be pre-cooled or preheated, meanwhile, the temperature of the air blown out from the air outlet 3 can be reduced, and the phenomenon that the overcooled or overheated air directly blows to a human body to cause discomfort in body feeling is avoided.

Of course, in other embodiments, the positions of the water-cooled heat exchanger 21 and the second evaporator 22 may be interchanged, so that the air path length of the air conditioner in the first operation mode may be shortened, and the pre-cooling or pre-heating effect may be achieved quickly.

With reference to fig. 3 and fig. 8, in this embodiment, specifically, the first operating mode is configured to: the second evaporator 22 is operated, the first and second partitions 12 and 23 are both opened, and the first damper 62 is closed; the second mode of operation is configured to: the first evaporator 4 and the second evaporator 22 are operated simultaneously, the first partition 12 and the second partition 23 are both opened, and the first damper 62 is closed; the third operating mode is configured to: the first evaporator 4 and the water-cooled heat exchanger 21 are operated, the second evaporator 22 is stopped, the first and second partitions 12 and 23 are both closed, and the first damper 62 is opened.

Further, the air conditioner also comprises a control system and a first temperature sensor for monitoring the indoor environment temperature Ta in real time, wherein the control system is connected with the first temperature sensor and is used for:

when the air conditioner is started, controlling the air conditioner to execute the first working mode; and the number of the first and second groups,

acquiring indoor environment temperature Ta detected by the first temperature sensor; and the number of the first and second groups,

and when the indoor environment temperature Ta reaches a preset temperature Ta0, controlling the air conditioner to execute the second working mode.

Thus, the indoor ambient temperature can be quickly adjusted when the air conditioner is started, and the first evaporator 4 is started to supply cold or heat to the water tank 5 when the indoor ambient temperature reaches the preset temperature.

The air conditioner still includes the second temperature sensor of the temperature Tb of the temperature in the real-time supervision water tank 5, second temperature sensor with control system is connected, control system still is used for:

acquiring the water temperature Tb in the water tank 5 detected by the second temperature sensor; and the number of the first and second groups,

and when the water temperature Tb in the water tank 5 reaches the preset temperature Tb0, controlling the air conditioner to execute the third working mode.

Thus, when the water temperature in the water tank 5 reaches the preset temperature, the water-cooling heat exchanger 21 can be used for cooling or heating, so as to avoid the cold or heat generated by the evaporator from forming over-cooled or over-heated wind to blow directly to the human body from the air outlet 3, which causes discomfort to the human body.

Preferably, the chamber wall 6 is cylindrical, and the first damper 62 is an arc plate formed by rotating around the central axis of the chamber wall 6, and the arc plate can rotate around the central axis of the chamber wall 6 to open or close the first tuyere 61, so that the space occupied by the first damper 62 is reduced.

The air conditioner further includes a driving mechanism connected to the first damper 62 and driving the first damper 62 to move to open or close the first air opening 61.

Similarly, a second damper for opening and closing the second air port 63 may be provided, the structure of the second damper may be the same as that of the first damper 62, and the driving mechanism is connected to the second damper and can drive the second damper to move to open or close the second air port 63.

Preferably, the first partition 12 and the second partition 23 are disposed at the same height of the cavity wall 6, so as to facilitate the air path circulation in the second operation mode, and avoid the air path blockage when the air flows from the air return duct 1 into the third region 24 through the first air opening 61 when the first partition 12 and the second partition 23 are located at different heights.

Referring to fig. 8, the first separating portion 12 includes a first fixed plate 121 and a first movable plate 122 movable relative to the first fixed plate 121; when the first partition 12 is in the closed state, the first movable plate 122 is adjacent to the first fixed plate 121 and both of them isolate the air return duct 1 into a first area 123 and a second area 124; when the first partition 12 is in the open state, the first movable plate 122 is stacked on the first fixed plate 121 to communicate the first area 123 and the second area 124. The on-off state of the first partition part 12 can adjust the circulation path of the wind to match the operation condition of the heat exchange system, so that the air conditioner has a plurality of working modes.

The second partition 23 includes a second fixed plate 231 and a second movable plate 232 movable relative to the second fixed plate 231; when the second partition 23 is in the closed state, the second movable plate 232 and the second fixed plate 231 are adjacent to each other and together isolate the air return duct 1 into the third area 24 and the fourth area 25; when the second partition 23 is in the open state, the second movable plate 232 is stacked on the second fixed plate 231 to communicate the third area 24 with the fourth area 25. The air circulation path can be adjusted by combining the on-off state of the second partition part 23, so that the air conditioner has multiple working modes by matching with the running condition of the heat exchange system.

Referring to fig. 3 and 4, in the present embodiment, the water tank 5 is disposed at the bottom of the casing 100, and the evaporation chamber 2 is disposed above the water tank 5, so that the unstable center of gravity of the air conditioner caused by the heavy weight of the water tank 5 can be avoided.

Of course, in other embodiments, the water tank 5 may be disposed in the middle of the casing 100, such as in the return air duct 1, and reserve a passage for return air.

Preferably, the case 100 has a cylindrical shape, thereby making the air conditioner elegant in appearance and reducing its occupied area and space.

The second evaporator 22 and the water-cooled heat exchanger 21 are arranged at intervals in the axial direction of the casing 100.

Referring to fig. 3 and 4, in the present embodiment, the first evaporator 4 is a coil evaporator, and the first evaporator 4 is wound around the outer wall of the water tank 5, so as to increase the contact area between the evaporator and the water tank 5 and improve the heat exchange efficiency. In other embodiments, the first evaporator 4 may also be a finned evaporator and attached to the outer wall surface of the water tank 5.

Preferably, in the present embodiment, the second evaporator 22 is a fin evaporator, and the second evaporator 22 includes a plurality of fins arranged at intervals along the circumferential direction of the casing 100, so as to increase the contact area between the wind and the second evaporator 22 and improve the heat exchange efficiency.

Preferably, the water-cooled heat exchanger 21 includes a plurality of fins arranged along the circumferential direction of the housing 100 and a water pipe connected to the water tank 5 and penetrating the plurality of fins to increase the contact area between the wind and the water pipe and improve the heat exchange efficiency.

In the present embodiment, taking the indoor unit as a floor-type air-conditioning indoor unit as an example for description, the height of the casing 100 of the floor-type air-conditioning indoor unit is high, the path that the air needs to travel after entering the air conditioner from the air return opening 11 is long, and the requirement of the floor-type air-conditioning indoor unit on the air supply amount is also high.

For convenience of description, taking the floor type air conditioning indoor unit as an example, the direction of the casing 100 toward the ground is defined as downward, and the direction of the casing 100 away from the ground is defined as upward. The housing 100 includes a bottom plate 7, and the bottom plate 7 is placed on the ground.

Preferably, the air outlet 3 is arranged at one end, namely the upper end, of the shell 100 far away from the bottom plate 7, the distance H between the air outlet 3 and the bottom plate 7 is 1.8-2.0 m, the air outlet 3 is provided with a first end and a second end which are transversely opposite, and the distance a between the first end and the second end is greater than the vertical height b of the air outlet 3. Like this, through setting up distance and the size of air outlet 3 between air outlet 3 and the bottom plate 7, make to form the coanda effect between the wind that air outlet 3 sent out and the ceiling, the wind that air outlet 3 sent out can advance along the ceiling adherence, greatly increased air supply distance not only, make the wind of sending out carry out the macrocycle round the room, and increased the convection current of cold and hot wind, thereby the homogeneity of indoor space temperature everywhere has been improved, and avoided the big amount of wind that air outlet 3 sent out, the wind of high wind speed directly blows the human body, user experience has been improved.

Through the structural design of the CFD simulation test, the heat exchange system and the air outlet 3 are adopted, the indoor environment where the air conditioner is located has excellent air volume distribution uniformity and temperature field distribution uniformity, in addition, through the position design of the air outlet 3, a coanda effect is formed between the air conditioner and a ceiling, cold and hot air has a good convection effect, the turbulent flow effect at the air return opening 11 is obvious through arranging the air return opening 11 at the top end of the shell 100, vortex can exist around a human body, and therefore the air flow can be provided around the human body, for example, when the temperature of the air outlet 3 is about 15 ℃ due to the design of the water temperature in the water tank 5, the body sensing temperature of the human body is kept between 20.7 and 22.4 ℃, and the human body sensing is comfortable.

Preferably, the air outlet 3 is arc-shaped and is coaxial with the casing 100, and a central angle of the air outlet 3 is 100-120 °, so that when the floor type air conditioner indoor unit is placed at a corner, air blown out from the air outlet 3 can respectively blow to about 2m towards two lateral sides and then reach a wall, thereby increasing a coverage area of the air blown out from the air outlet 3 and enabling the indoor temperature to be uniform.

Preferably, vertical height b is 50 ~ 80mm to make air outlet 3 be the platykurtic, to do benefit to the wind of the little amount of wind that air outlet 3 sent out and form high-speed flat efflux, and form the coanda effect between with the ceiling, also be the attaches the wall effect, form the low-pressure zone between high-speed flat efflux and the ceiling, can make the efflux deflect to the ceiling, and move to far away along the ceiling, thereby increase supply air distance, improved indoor temperature homogeneity greatly.

With reference to fig. 9 to 14, further, the floor-type air-conditioning indoor unit further includes a pair of air deflectors 8, a pivot shaft 81 is disposed at a lateral edge of each air deflector 8, the air outlet 3 has an upper side and a lower side which are vertically disposed opposite to each other, and the pair of air deflectors 8 are pivotally connected to the upper side and the lower side through respective pivot shafts 81. The wind outlet direction can be further adjusted as required by rotating the wind deflector 8 around the pivot shaft 81 thereof.

Specifically, the floor type air conditioner indoor unit further comprises a pair of air deflector driving mechanisms, wherein the pair of air deflector driving mechanisms are respectively connected with the pair of air deflectors 8 and respectively drive the pair of air deflectors 8 to rotate, so that each air deflector 8 can be driven independently, the pair of air deflectors 8 can rotate in the same direction or in the opposite direction, and even each air deflector 8 can be driven independently to rotate at different angles, so that the air outlet direction and the air outlet quantity are controlled.

The air deflector driving mechanism comprises a motor 82, a first gear 83, a second gear 84 in meshed connection with the first gear 83, a rocker 85 in coaxial connection with the second gear 84, and a connecting arm 86 connected with the air deflector 8, wherein the motor 82 is connected with the first gear 83 and drives the first gear 83 to rotate, the number of teeth of the first gear 83 is smaller than that of the second gear 84, the rocker 85 is provided with a chute 851, one end, far away from the air deflector 8, of the connecting arm 86 is provided with a convex block 87, and the convex block 87 is clamped in the chute 851 and can slide along the chute 851, so that when the motor 82 drives the first gear 83 to rotate, the rocker 85 synchronously rotates along with the second gear 84, and the connecting arm 86 is driven to drive the air deflector 8 to move through the acting force of the chute 851 on the convex block 87.

Further, floor type air conditioning indoor unit still includes installation department 88, and installation department 88 includes first riser 881 and the second riser 882 far away from air outlet 3 that is close to air outlet 3, and first riser 881 and second riser 882 transversely set up relatively and form the installation cavity between the two, and motor 82, first gear 83 and second gear 84 are located in the installation cavity, and rocking arm 85 and linking arm 86 are located air outlet 3, and second gear 84 and rocking arm 85 are connected through the fixed axle 89 that crosses first riser 881.

The pair of air deflectors 8 have a closing position for closing the air outlet 3, and in the closing position, one ends of the pair of air deflectors 8 far away from the respective pivot shafts 81 are in contact with each other, so that when the air conditioner is not in use or is in a shutdown state, dust can be prevented from entering the casing 100 through the air outlet 3 and being inconvenient to clean.

Further, the casing 100 includes an outer casing and an inner casing located in the outer casing, the air outlet 3 is disposed in the inner casing, the outer casing is provided with an air window, the air outlet 3 is exposed in the air window, the floor type air conditioning indoor unit further includes an inner casing driving mechanism, the inner casing driving mechanism drives the inner casing to lift relative to the outer casing, and the height of the air outlet 3 can be adjusted as required by driving the height of the inner casing to lift relative to the outer casing.

Furthermore, the inner shell driving mechanism can drive the inner shell to rotate relative to the outer shell, so that the air outlet angle of the air outlet 3 can be adjusted without difficultly moving the whole indoor unit, the air sweeping area of the air outlet 3 can be increased, and the indoor temperature uniformity is improved.

With reference to fig. 3 and 5, a fan is disposed in the casing 100, specifically, in this embodiment, the fan employs an axial flow fan 13, the axial flow fan 13 is located in the air return duct 1, the axial flow fan 13 is disposed coaxially with the casing 100, and a ratio of a distance l from an outer edge of a fan blade of the axial flow fan 13 to an axis thereof to an inner diameter r of the casing 100 is θ, where θ is greater than or equal to 0.8 and less than 1. That is to say, through setting up the size proportion of axial fan 13 and casing 100, make axial fan 13 adopt great flabellum, so not only can increase the volume of induced drafting, improve axial fan 13's the effect of induced drafting, moreover under the same circumstances of the volume of induced drafting, its rotational speed that needs is lower to reduce the noise that axial fan 13 rotated the production, improve user experience, be particularly useful for quiet application scene.

The casing 100 is further provided with a connecting portion which connects the rotating shaft of the axial flow fan 13 and the casing 100, the connecting portion comprises a plurality of connecting ribs 14 which are arranged along the circumferential direction of the axial flow fan 13 at intervals, so that the axial flow fan 13 can be fixed on the casing 100, and the plurality of connecting ribs 14 can enable air to pass through the connecting ribs 14 along the circumferential direction of the axial flow fan 13 at intervals, so that the air return effect is not affected.

Referring to fig. 3 and 5, a pressure boost cavity 15 is disposed in the return air duct 1, the blower is disposed in the pressure boost cavity 15, specifically, in the present embodiment, the axial flow blower 13 is disposed in the pressure boost cavity 15, the pressure boost cavity 15 is disposed around the blower, the pressure boost cavity 15 encloses the pressure boost cavity for the blower to rotate therein, and the connecting rib 14 is connected to the pressure boost cavity 15.

Axial fan 13 includes main flabellum group and vice flabellum group that coaxial interval set up, main flabellum group is including a plurality of main flabellum 131 of arranging around axial fan 13's pivot circumference, vice flabellum group is including a plurality of vice flabellum 132 of arranging around axial fan 13's pivot circumference, and a plurality of main flabellum 131 and a plurality of vice flabellum 132 are in axial fan 13's circumference setting of staggering, and axial fan 13 forms is encircleed to pressure boost cavity 15, and pressure boost cavity 15's diameter diminishes gradually along the direction of keeping away from return air duct 1's return air inlet 11.

Through main fan blade group with the setting of vice fan blade group and the crisscross setting of a plurality of main fan blade 131 and a plurality of auxiliary fan blade 132 to combine the structural design in pressure boost chamber, can be to the slower air boost of fan axle center department flow, the wind direction evaporimeter in the return air duct 1 with higher speed flows, reduce the vortex of air in pressure boost cavity 15 simultaneously, thereby can make the wind in the return air duct 1 can send to farther place, satisfy the requirement of floor type air conditioner to the wind pressure, solve because the return air duct 1 is longer and the problem that the return air that leads to is not enough.

Wherein, the ratio of the distance from the outer edge of the main fan blade 131 of the axial flow fan 13 to the axial center thereof to the inner diameter r of the shell 100 is theta, and theta is more than or equal to 0.8 and less than 1.

Further, on the plane where the secondary fan blade set is located, the ratio alpha between the distance L from the outer edge of each secondary fan blade 132 to the rotating shaft of the axial flow fan 13 and the radius R of the supercharging cavity 15 is more than or equal to 2/3. Thereby can further increase the volume of induced drafting, improve axial fan 13's the effect of induced drafting, under the same circumstances of volume of induced drafting moreover, its required rotational speed is lower, can reduce the noise that axial fan 13 rotated the production, improves user experience.

The auxiliary fan blade group is arranged on one side, far away from the air return opening 11, of the main fan blade group. The length of the main fan blade 131 is greater than that of the auxiliary fan blade 132 in a plane perpendicular to the rotation axis of the axial flow fan 13, where the length refers to the length of the main fan blade 131 and the auxiliary fan blade 132 along the radial direction of the axial flow fan 13, so that the shape of the supercharging cavity 15 can be adapted to prevent the auxiliary fan blade 132 group from being affected by the supercharging cavity 15 during rotation.

Preferably, the number of the main blades 131 is greater than the number of the sub blades 132 so as to cut the wind in the return air duct 1 more finely, thereby reducing noise.

Specifically, the number of the main blades 131 and the number of the auxiliary blades 132 are both odd numbers, so as to prevent the axial flow fan 13 from being unbalanced in force when rotating and causing high noise. For example, in the present embodiment, the number of the main blades 131 is 9, and the number of the sub-blades 132 is greater than 9.

The air conditioner further comprises a motor for driving the axial flow fan 13 to rotate, a rotating shaft of the axial flow fan 13 is cylindrical and is provided with a rotating shaft cavity, the motor is arranged in the rotating shaft cavity, and the main fan blade 131 and the auxiliary fan blade 132 are connected to the rotating shaft.

Preferably, the outer diameter of the rotating shaft cavity is gradually reduced in a direction away from the air return opening 11, that is, the outer diameter of the rotating shaft of the axial flow fan 13 is gradually reduced in a direction away from the air return opening 11, so as to reduce the influence on the sizes of the main fan 131 and the sub fan 132.

Further, on each plane perpendicular to the rotation shaft of the axial flow fan 13, the distance from the outer wall surface of the rotation shaft of the axial flow fan 13 to the inner wall surface of the supercharging cavity 15 is equal. Thus, the air quantity is ensured, and the supercharging effect is ensured.

One end of the pressurizing cavity 15 close to the air return opening 11 is connected with the inner wall of the casing 100, so that all air entering the air return passage 1 from the air return opening 11 enters the pressurizing cavity 15, and the pressurizing effect is improved.

The air conditioner also includes a filter device 16 disposed in the air duct. Preferably, the filter device 16 is provided in the return air duct 1. The casing 100 is further provided with a fixing mechanism 17 for assembling the filtering device 16 on the casing 100, the pressurizing cavity 15 connects the casing 100 and the filtering device 16, and the pressurizing cavity surrounded by the pressurizing cavity 15 is communicated with the air suction opening 161 of the filtering device 16. Like this, through locating filter equipment 16 in the wind channel can filter the cleanness to the wind in the return air duct 1 to improve the air cleanliness factor of indoor environment, realize living environment's air purification, be favorable to health, fixed establishment 17 can fix filter equipment 16, and in order to avoid filter equipment 16 to move and the dislocation in the use, lead to the filter effect to descend.

Specifically, one end of the pressurizing cavity 15 far from the air return opening 11 is connected with the air suction opening 161 of the filtering device 16, so that all the air in the pressurizing cavity 15 can be sent into the filtering device 16 for filtering and cleaning.

With reference to fig. 5 to 6 and 8, the fixing mechanism 17 includes a first fixing portion 171 close to the pressurizing cavity 15 and a second fixing portion 172 far from the pressurizing cavity 15, the first fixing portion 171 and the second fixing portion 172 are spaced apart from each other in the axial direction of the housing 100, the filter device 16 is disposed between the first fixing portion 171 and the second fixing portion 172, and opposite ends of the filter device 16 abut against the first fixing portion 171 and the second fixing portion 172, respectively. So that the opposite ends of the filter device 16 can be fixed, respectively, to prevent the filter device 16 from moving in the axial direction of the housing 100 to affect the filtering effect.

Wherein, first fixed part 171 includes limiting plate 1711, elastic component 1712 and motion board 1713, and limiting plate 1711 locates the periphery of pressure boost cavity 15 and connects pressure boost cavity 15 and casing 100, forms the installation cavity between limiting plate 1711 and the pressure boost cavity 15, the installation cavity has the opening towards filter equipment 16, and elastic component 1712 locates in the installation cavity, motion board 1713 is located between elastic component 1712 and the filter equipment 16, and elastic component 1712 has the compression deformation volume so that motion board 1713 supports and holds filter equipment 16, and limiting plate 1711 restricts elastic component 1712 and moves to the direction of keeping away from filter equipment 16 to further strengthen the fixed to filter equipment 16.

In this embodiment, the filter device 16 is cylindrical, and correspondingly, the moving plate 1713 is circular, so that the moving plate 1713 can be attached to the filter device 16 to improve the fixing effect and the sealing performance of the filter device 16.

Preferably, the elastic member 1712 is provided with a plurality of elastic members 1712, and the plurality of elastic members 1712 are arranged in the installation cavity at regular intervals to improve the uniformity of the stress on the filtering device 16.

Specifically, in this embodiment, the elastic member 1712 is provided as a spring, so that sufficient pressure can be provided to the moving plate 1713 to make the moving plate 1713 fit the filter device 16, thereby improving the fixing effect and the sealing performance of the filter device 16. In other embodiments, the resilient member 1712 may be provided in other forms so long as sufficient pressure is applied to the motion plate 1713 to cause the motion plate 1713 to engage the filter assembly 16.

Further, a seal ring is provided between the moving plate 1713 and the filter device 16 to improve the sealing performance with respect to the filter device 16.

The second fixing portion 172 includes a supporting frame 1721 and a plurality of connecting ribs 1722, each connecting rib 1722 connects the supporting frame 1721 and the housing 100, and the plurality of connecting ribs 1722 are arranged along the circumferential direction of the supporting frame 1721 at intervals to fix the filtering device 16 on the housing 100, and save materials.

Correspondingly, the support 1721 is also circular to fit the filter 16.

Furthermore, the pressurizing cavity 15 is hermetically connected with the filtering device 16, so that the sealing performance can be improved.

The filtering device 16 is arranged on one side of the axial flow fan 13 far away from the air return opening 11, one end of the pressurizing cavity 15 far away from the air return opening 11 is connected with one end of the filtering device 16 close to the air return opening 11, namely, the axial flow fan 13 is arranged between the air return opening 11 and the filtering device 16, so that air sucked by the axial flow fan 13 is conveyed into the filtering device 16 for filtering and cleaning, and meanwhile, the problem of large air pressure loss caused by the fact that the air passes through the filtering device 16 can be solved by the axial flow fan 13.

Preferably, the filtering device 16 is a HEPA filtering device to improve the filtering effect and realize effective filtering of particles of 0.1 to 0.3 μm, thereby achieving an excellent air purifying effect.

With reference to fig. 3 and fig. 6 to 7, further, a turbine 18 is further disposed in the air duct, specifically, the turbine 18 is disposed in the air return duct 1, the turbine 18 is disposed on a side of the axial flow fan 13 away from the air return opening 11, the axial flow fan 13 and the turbine 18 are in transmission connection through a planetary gear reducer 19, the planetary gear reducer 19 includes a driving gear 191, a planetary gear 192 and a driven gear 193, the driving gear 191 is disposed on an outer periphery of a rotating shaft of the turbine 18 and rotates synchronously with the turbine 18, the driven gear 193 is disposed on an inner surface of the rotating shaft of the axial flow fan 13, the planetary gear 192 and the driving gear 191 are disposed in a cavity of the rotating shaft, the planetary gear 192 is respectively engaged with the driving gear 191 and the driven gear 193, and the number of teeth of the driving gear 191 is less than the number of teeth of the driven gear 193. Through the matching of the axial flow fan 13, the turbine 18 and the planetary gear reducer 19, on one hand, the turbine 18 is arranged, so that the air which flows slowly at the axis of the axial flow fan 13 can be pressurized, the flow of the air in the air return channel 1 to the air direction evaporator is accelerated, and the problems of large air pressure loss and insufficient air return caused by large air resistance or long air path in the conventional air conditioner are solved; on the other hand, the planetary gear reducer 19 can avoid the problem of the motor load being too large due to the large resistance of the turbine 18, and the problem of the motor size being required to be increased due to the large motor load. Especially, the problem of large wind pressure loss after wind passes through due to the fact that the filtering device 16 is arranged in the air duct is solved, meanwhile, the vortex of air in the pressurization cavity 15 is reduced, and therefore the wind in the air return duct 1 can be sent to a farther place, and the requirement of a floor type air conditioner on wind pressure is met.

Preferably, the ratio of the number of teeth of the driving gear 191 to the number of teeth of the driven gear 193 is 1:5 to 1:10, that is, the transmission ratio of the driving gear 191 to the driven gear 193 is 1:5 to 1:10, so that the load and size of the motor can be balanced, and low torque of the motor, high rotation speed of the turbine 18 and low rotation speed of the axial flow fan 13 can be realized.

Preferably, the planetary gear 192 is provided in plural, and the plural planetary gears 192 are arranged at intervals along the circumference of the turbine 18, so as to facilitate the effective transmission of the driving gear 191 and the driven gear 193, and at the same time, facilitate the design for achieving the target transmission ratio.

The blades of the axial fan 13 are angled with respect to a plane perpendicular to the axis thereof by an angle α, and the blades of the turbine 18 are angled with respect to a plane perpendicular to the axis thereof by an angle β, preferably α < β, so as to facilitate the passage of the wind passing through the axial fan 13 between the blades of the turbine 18.

Specifically, the auxiliary fan blade set is disposed between the main fan blade set and the turbine 18, that is, the turbine 18 is located on a side of the axial flow fan 13 away from the air outlet 3.

Preferably, the turbine 18 is disposed in the air suction opening 161 of the filtering device 16, so as to increase the air pressure of the turbine 18, reduce the eddy of air in the supercharging cavity 15, and enable the wind power to pass through the filtering device 16 with strong force, thereby solving the problem of large loss of air pressure caused by the air passing through the filtering device 16, so that the air in the return air duct 1 can be sent to a farther place, and the requirement of the floor air conditioner on the air pressure is met.

With reference to fig. 5 and 8, the filtering device 16 is horizontally disposed in the air duct, the casing 100 is further provided with a filtering cavity 162 surrounding the filtering device 16, a filtering cavity is formed between the filtering device 16 and the filtering cavity 162, the filtering device 16 includes a filtering net 163 and an air door 164, the filtering net 163 is arranged in an annular manner around the extending direction of the air duct, the filtering net 163 surrounds and accommodates the hollow cavity, the air door 164 is disposed at one end of the filtering net 163, which is far away from the air return opening 11, the air door 164 has an open position and a closed position, when the open position is located, the air door 164 opens the hollow cavity, and when the closed position is located, the air door 164 shields the hollow cavity.

Thus, the air door 164 is in different positions, the opening and closing state of the air door 164 can be selected according to the user requirement, when the air door 164 is in the opening position, the air entering the filter device 16 can directly pass through the filter device 16 from the hollow cavity without passing through the filter screen 163, that is, the air is not filtered and cleaned; when the air door 164 is in the closed position, the air entering the filter device 16 can only pass through the filter screen 163 arranged in the annular shape, so that the air is filtered and cleaned, then enters the filter cavity, and flows further away to the air duct along the filter cavity under the action of the filter cavity 162; whether the air conditioner filters the air and cleans can be controlled by controlling the opening and closing state of the air door 164, and the functionality and the intelligence of the air conditioner are improved.

Preferably, the filter screen 163 is arranged in a circular ring shape to fit the shape of the housing 100, and the space of the filter chamber at each position in the circumferential direction of the filter screen 163 is made substantially the same, thereby facilitating the uniformity of the wind pressure throughout the filter chamber after the wind passes through the filter screen 163.

Specifically, the filter screen 163 is formed to rotate around the central axis of the housing 100.

The air door 164 includes a pivot shaft 1641 and a door plate 1642 rotating around the pivot shaft 1641, both ends of the pivot shaft 1641 are respectively connected with the supporting frames 1721, and the air door 164 is switched between an open position and a closed position by the rotation of the door plate 1642 around the pivot shaft 1641.

Preferably, the hollow cavity is cylindrical, the door plate 1642 is circular, and the pivot axis 1641 passes through the center of the door plate 1642.

Further, the indoor unit of the air conditioner further includes a driving mechanism for driving the damper 164 to switch between the open position and the closed position, and a controller connected to the driving mechanism and configured to: the driving mechanism is controlled to drive the air door 164 to switch between the opening position and the closing position, so that whether the air conditioner filters and cleans the air is controlled, and the functionality and the intelligence of the air conditioner are improved.

Further, the air-conditioning indoor unit further comprises an air quality detection device arranged outside the casing 100, and the controller is connected with the air quality detection device and is used for:

acquiring an indoor PM2.5 concentration value detected by the air quality detection device;

when the concentration value of the indoor PM2.5 reaches a preset value, the driving mechanism is controlled to drive the air door 164 to be switched to the closed position.

Thus, when the concentration value of the indoor PM2.5 reaches the preset value, the indoor PM2.5 exceeds the standard, and at the moment, the air door 164 is controlled to be switched to the closed position, so that the air in the air return duct 1 can pass through the filter screen 163 of the filter device 16 to be filtered and cleaned, and the cleanliness of indoor air can be improved.

Further, the air conditioner still includes the spray set 105 of locating first evaporimeter 4 top and locate the water collector 106 of first evaporimeter 4 below, can clean first evaporimeter 4 through spray set 105, wash away the dust that falls to first evaporimeter 4 surface area, avoid leading to the heat exchange efficiency of first evaporimeter 4 to reduce owing to the dust that falls on first evaporimeter 4 surface, and the dust blows out air outlet 3 along with the wind and arouses uncomfortable situations such as user cough, on the other hand, the remaining moisture in first evaporimeter 4 surface can the heat absorption evaporation, and then blows to indoor environment from air outlet 3 along with the wind, thereby carry out the humidification to indoor environment.

Preferably, the spray device 105 is connected to the water tank 5, that is, the water source of the spray device 105 is the water tank 5, so that the structure can be simplified and the water can be recycled.

Further, a filter element is arranged between the first evaporator 4 and the water receiving tray 106, and water after the first evaporator 4 is washed is filtered and cleaned through the filter element, so that the water can be recycled, and the fold-shaped structure of the filter element can increase the evaporation area and improve the humidification effect.

Preferably, the water receiving tray 106 is connected to the water tank 5 so as to make filtered and cleaned water and defrosted water be supplied to the water tank 5 for secondary use, thereby saving resources. Specifically, the lower end of the water receiving tray 106 is provided with a water collecting opening, and the water collecting opening is connected with the water tank 5 through a water pipe so as to guide the water in the water receiving tray 106 to flow into the water tank 5.

Specifically, the spraying device 105 includes a plurality of spray heads arranged at intervals, each spray head is positioned between two adjacent fins, and the position and the angle of each spray head are set so as to ensure that each fin can be sprayed. In the present embodiment, since the plurality of fins of the first evaporator 4 are arranged at intervals in the circumferential direction of the casing 100, the plurality of shower heads are also arranged at intervals in the circumferential direction of the casing 100.

Similarly, a shower device 105 may be provided above the second evaporator 22, a water receiving tray 106 and a filter element may be provided below the second evaporator 22, and the water receiving tray 106 below the second evaporator 22 may be connected to the water tank 5.

Referring to fig. 1, the air conditioner further includes a fresh air system, the fresh air system includes a fresh air pipe 9 connected to the casing 100, the fresh air pipe 9 communicates the return air duct 1 with the external environment, the fresh air pipe 9 includes a square pipe section 91 connected to the casing 100, a circular pipe section 92 away from the casing 100, and a gradually changing pipe section 93 connecting the circular pipe section 92 and the square pipe section 91, the cross section of the square pipe section 91 is square, the square pipe section 91 is located between the return air inlet 11 and the fan, that is, one end of the fresh air pipe 9 connected to the casing 100 is located between the return air inlet 11 and the fan, and the thickness of the square pipe section 91 along the extending direction of the return air duct 1 is smaller than the width of the square pipe section perpendicular to the extending direction of the return air duct 1. The extending direction of the return duct 1 herein refers to the height direction of the floor type air conditioning indoor unit.

Through fresh air pipe 9 and structural design, not only can introduce the new trend among the external environment in the indoor environment at air conditioner place, update indoor air, avoid being in the not good problem of air quality of causing the indoor environment in airtight environment for a long time owing to using the air conditioner, and fresh air pipe 9 is connected with casing 100 through square pipe section 91, can reduce because fresh air pipe 9's existence and occupy casing 100 space, especially occupy in the extending direction's of return air duct 1 space, thereby avoid the occupation to the space of induced drafting between fan and return air inlet 11, gradual change pipe section 93 can guide the air among the circle pipe section 92 and get into in the square pipe section 91 of pipe section.

Specifically, the width of the square pipe section 91 perpendicular to the extending direction of the return air duct 1 is greater than the diameter of the circular pipe section 92, that is, the transverse width of the square pipe section 91 is greater than the diameter of the circular pipe section 92, and the thickness of the square pipe section 91 along the extending direction of the return air duct 1 is smaller than the diameter of the circular pipe section 92, that is, the vertical thickness of the square pipe section 91 is smaller than the diameter of the circular pipe section 92, so that the sectional area of the square pipe section 91 and the sectional area of the circular pipe section 92 can be approximately equal, and the smooth entering of the air in the external environment into the return air duct 1 is facilitated.

The square pipe section 91 comprises a pair of flat plates 911 arranged oppositely along the extending direction of the air return duct 1, namely, the pair of flat plates 911 are arranged oppositely along the height direction of the casing 100, one end of the flat plate 911 connected with the casing 100 is arc-shaped, namely, one end of the flat plate 911 connected with the casing 100 is butted with the casing 100, namely, an opening is formed in the casing 100, and one end of the square pipe section 91 connected with the casing 100 is butted with the edge of the opening, so that the processing difficulty is reduced, and the material and the cost are saved.

Further, the flat plate 911 is perpendicular to the central axis of the housing 100.

Furthermore, a fresh air duct for communicating the return air duct 1 with the external environment is arranged in the fresh air duct 9, a fresh air door for opening or closing the fresh air duct is also arranged in the fresh air duct 9, the fresh air door has a first position and a second position, and when the fresh air door is at the first position, the fresh air duct 9 is communicated with the return air duct 1; and when the air door is in the second position, the fresh air door blocks the communication between the fresh air pipe 9 and the air return duct 1. Therefore, the selective control on whether to introduce fresh air or not can be realized by controlling the position of the fresh air damper.

Preferably, the fresh air damper is movably arranged in the square pipe section 91.

Referring to fig. 1 to 3, the air conditioner further includes a return air damper 10, and the return air damper 10 is disposed in the casing 100 and is used to open or close the return air inlet 11.

Further, the air conditioner also comprises an air quality sensor, wherein the air quality sensor is used for detecting the indoor air quality parameter of the air conditioner;

the control system is connected with the air quality sensor and is used for:

acquiring the air quality parameter; and

and controlling the opening and closing of the return air door 10 and the fresh air door according to the air quality parameters.

Like this, control system comes the switching of selective control return air door 10 and new trend air door 164 according to the indoor air quality parameter that air quality sensor detected to whether control introduces the air in the indoor environment with the air conditioner place with the new trend in the external environment, not only can solve the poor problem of indoor air quality that long-time use air conditioner leads to, can improve the intelligent level of air conditioner moreover.

Specifically, the air quality sensor is a humidity sensor; the control system is configured to: when the air humidity detected by the humidity sensor is smaller than a preset humidity value, the fresh air door 1 is controlled to be opened, and the return air door 10 is controlled to be closed. After the air conditioner operates for a period of time in a closed environment, indoor air can become dry gradually, and the humidity, the oxygen concentration and the like of the indoor environment can be increased by introducing fresh air, so that the indoor air quality is improved.

The control system is further configured to: when the indoor humidity value that detects is equal with external environment's humidity value, control actuating mechanism drive the new trend air door is closed, and control actuating mechanism drive return air door 10 is opened to promote indoor air circulation and flow.

Alternatively, the air quality sensor may be CO₂A concentration sensor; the control system is configured to: when the CO is present₂CO detected by concentration sensor₂And when the concentration reaches a preset concentration value, the fresh air door is controlled to be opened, and the return air door 10 is controlled to be closed. Thus, by detecting CO in the indoor environment₂In a concentration of CO₂Introducing fresh air when the concentration reaches a preset concentration value, thereby being capable of leading CO in the indoor environment₂The concentration is reduced, and the human body is prevented from being in high CO for a long time₂Oxygen deficiency is caused in the environment of concentration so as to avoid influencing the health of human bodies.

The control system is further configured to: when detecting indoor CO₂Concentration value and CO of external environment₂When the concentration values are equal, the driving mechanism is controlled to drive the fresh air damper to be closed, and the driving mechanism is controlled to drive the return air damper 10 to be opened, so that the indoor air circulation flow is promoted.

Preferably, the casing 100 comprises a main body, the air return opening 11 is arranged at the top end of the main body, and the air return damper 10 is movably arranged above the main body, so that on one hand, when the air conditioner is used for refrigerating, cold air sinks, hot air rises, and hot air can enter the air return duct 1 through the air return opening 11, which is beneficial to improving the heat exchange efficiency; on the other hand, the air return opening 11 is arranged at the top end of the shell 100, so that air turbulence can be increased, and air convection efficiency can be improved.

The air conditioner also comprises a driving mechanism for driving the return air door 10 to lift, the driving mechanism comprises a fixing frame 101 and a screw rod lifter 102, the fixing frame 101 is connected to the main body, the upper end of the screw rod lifter 102 is connected with the return air door 10, the lower end of the screw rod lifter 102 is in threaded connection with the fixing frame 101, and the screw rod lifter 102 drives the return air door 10 to lift so as to open or close the return air inlet 11, so that whether the return air inlet 11 is opened or not can be selectively controlled.

Wherein, lead screw lift 102 is including locating the central lead screw 1021 at return air door 10 center, and locate a plurality of circumference lead screw 1022 of return air door 10 outer peripheral edges, mount 101 includes central fixed block 1011, a plurality of circumference fixed block 1012, and a plurality of connecting strip 1023, every connecting strip 1023 connects central fixed block 1011 and a circumference fixed block 1012, central lead screw 1021 and central fixed block 1011 threaded connection, a plurality of circumference lead screw 1022 and a plurality of circumference fixed block 1012 one-to-one and respectively threaded connection. Therefore, the influence of the fixed frame 101 on return air is avoided, the structure is simple, the occupation of the screw rod lifter 102 on the space in the shell 100 is reduced, and the support stability of the screw rod lifter 102 on the return air door 10164 along the axial direction of the shell 100 is improved.

In this embodiment, the main part is cylindricly, correspondingly, return air door 10 also is circularly to the shape of adaptation main part, and the outer peripheral edges of return air door 10 with the outer peripheral edges parallel and level of main part, so that the area of return air inlet 11 is done greatly, is favorable to improving return air efficiency.

Further, a humidification module is further disposed in the housing 100, and the air quality sensor is a humidity sensor; the control system is configured to: and when the air humidity detected by the humidity sensor is smaller than a preset humidity value, controlling the humidification module to start. The indoor humidification at the air conditioner can be rapidly improved through the humidification module.

Preferably, the humidifying module is connected with a water tank 5, the air conditioner further comprises a water pump, and the water tank 5 supplies water to the humidifying module through the water pump.

Further, the air conditioner further comprises a water injection module, a water injection port 103 is arranged on the shell 100, the water injection module is connected with the water injection port 103, and the water injection port 103 is arranged above the water tank 5 so as to be beneficial to injecting water into the water tank 5.

Still be provided with level sensor in the water tank 5, control system with level sensor and the water injection module is connected for: acquiring a water level value of the water tank 5 detected by the water level sensor; when the detected water level value of the water tank 5 reaches a low water level threshold value, controlling the water injection module to add water into the water tank 5; and controlling a drain port of the water tank 5 to be opened to drain water when the detected water level value of the water tank 5 reaches a high water level threshold value.

The humidification module, the water receiving tray 106 and the water injection module can be connected through a three-way valve so as to be selectively communicated according to requirements.

Further, a sterilization module is arranged in the return air duct 1 to sterilize and clean the air flowing through the return air duct 1, thereby improving the air quality of the indoor environment.

Preferably, the sterilization module is an ultraviolet lamp 104, and since the sterilization module is disposed in the air return duct 1, that is, inside the casing 100, the risk of ultraviolet light overflow is avoided, so that the sterilization module can be opened for 24 hours all the day, thereby improving the sterilization effect.

Further, the ultraviolet lamp 104 is disposed along the axial direction of the housing 100, so that the contact area between the wind in the air return duct 1 and the ultraviolet lamp 104 is increased, the contact time between the wind and the ultraviolet lamp 104 is prolonged, and the sterilization effect is effectively improved.

In this embodiment, two ultraviolet lamps 104 are disposed, and the two ultraviolet lamps 104 are respectively located at two sides of the first separating portion 12, so that the contact area between the wind in the air return duct 1 and the ultraviolet lamps 104 can be further increased, the contact time between the wind and the ultraviolet lamps 104 is prolonged, and the sterilization effect is improved.

Of course, the number of the ultraviolet lamps 104 is not limited to this, and specifically, different numbers of the ultraviolet lamps 104 may be respectively disposed on both sides of the first separating portion 12 as needed.

Compared with the prior art, the air conditioner provided by the utility model has the beneficial effects that: the first heat exchange system exchanges heat with the water tank 5 through the first evaporator 4, water in the water tank 5 flows in the water-cooled heat exchanger 21 in a circulating mode, and air in the air return duct 1 exchanges heat with the water-cooled heat exchanger 21 and then is sent out from the air outlet 3, so that on one hand, the temperature of the air sent out from the air outlet 3 cannot be overcooled or overheated, the comfortable experience like natural air is brought to users, particularly the bone-piercing cold feeling caused by directly blowing cold energy generated by the evaporator to a human body through the air outlet 3 during refrigeration of an air conditioner is avoided, on the other hand, the temperature of the water in the water-cooled heat exchanger 21 is stable and higher than the condensation temperature of the air, the humidity of the air cannot be reduced when the air passes through the water-cooled heat exchanger 21, the reduction of indoor humidity caused by condensation of moisture in the air on the surface of the evaporator is avoided, and in addition, the capacity of the water is far larger than that of the air, the compressor can be prevented from frequently stopping the recovery machine due to the specific heat of the compressor, The air outlet temperature greatly fluctuates due to reasons such as defrosting of the evaporator, so that the user experience is improved, and the health is facilitated; in addition, the second heat exchange system can be precooled quickly, so that the indoor temperature is reduced quickly; through the arrangement of the two heat exchange systems, which heat exchange system is adopted can be selected according to actual needs, so that the intelligence and the functionality of the air conditioner are improved, and the use experience of a user is improved; by setting the distance between the air outlet 3 and the bottom plate 7 and the size of the air outlet 3, the coanda effect is formed between the air sent out by the air outlet 3 and the ceiling, and the air sent out by the air outlet 3 can advance along the wall attached to the ceiling, so that the air supply distance is greatly increased, the sent air is circulated greatly around a room, and the convection of cold air and hot air is increased, so that the uniformity of the temperature of each part of the indoor space is improved, the direct blowing of the high-air-volume high-air-speed air sent out by the air outlet 3 to a human body is avoided, and the user experience is improved; by setting the size ratio of the axial flow fan 13 to the casing 100, the axial flow fan 13 adopts larger fan blades, so that the air suction volume can be increased, the air suction effect of the axial flow fan 13 is improved, and the required rotating speed is lower under the condition of the same air suction volume, so that the noise generated by the rotation of the axial flow fan 13 is reduced, the user experience is improved, and the fan is particularly suitable for quiet application scenes; through the arrangement of the main fan blade group and the auxiliary fan blade group, the staggered arrangement of the plurality of main fan blades 131 and the plurality of auxiliary fan blades 132 and the structural design of the pressurization cavity 15, the air which flows slowly at the axis of the fan can be pressurized, the flow of the wind direction evaporator in the return air duct 1 is accelerated, and the vortex of the air in the pressurization cavity 15 is reduced, so that the air in the return air duct 1 can be sent to a farther place, the requirement of a floor type air conditioner on the air pressure is met, and the problem of insufficient return air caused by the longer return air duct 1 is solved; the air in the air return channel 1 can be filtered and cleaned through the filtering device 16 arranged in the air channel, so that the air cleanliness of the indoor environment is improved, the air purification of the living environment is realized, the human health is facilitated, and the fixing mechanism 17 can fix the filtering device 16 so as to prevent the filtering device 16 from moving and being misplaced in the use process to reduce the filtering effect; through the matching of the axial flow fan 13, the turbine 18 and the planetary gear reducer 19, on one hand, the turbine 18 is arranged, so that the air which flows slowly at the axis of the axial flow fan 13 can be pressurized, the flow of the air in the air return channel 1 to the air direction evaporator is accelerated, and the problems of large air pressure loss and insufficient air return caused by large air resistance or long air path in the conventional air conditioner are solved; on the other hand, the problem of overlarge motor load caused by large resistance of the turbine 18 can be avoided through the planetary gear reducer 19, and the problem that the motor size needs to be increased due to large motor load is avoided; the air door is arranged at different positions, so that the opening and closing state of the air door can be selected according to the requirements of users, when the air door is arranged at the opening position, the air entering the filtering device 16 can directly pass through the filtering device 16 from the hollow cavity without passing through the filtering net 163, namely the air is not filtered and cleaned; when the air door is in the closed position, the air entering the filter device 16 can only pass through the filter screen 163 arranged in the annular shape, so that the air is filtered and cleaned, then enters the filter cavity, and flows further away along the filter cavity to the air duct under the action of the filter cavity 162; whether the air conditioner filters and cleans air can be controlled by controlling the opening and closing state of the air door, so that the functionality and the intelligence of the air conditioner are improved; through the fresh air pipe 9 and the structural design thereof, fresh air in the external environment can be introduced into the indoor environment where the air conditioner is located to update indoor air, so that the problem of poor air quality of the indoor environment due to the fact that the air conditioner is used and is located in a closed environment for a long time is avoided, the fresh air pipe 9 is connected with the shell 100 through the square pipe section 91, the occupation of the space of the shell 100 due to the existence of the fresh air pipe 9 can be reduced, particularly the occupation of the space in the extending direction of the return air duct 1, and therefore the occupation of the air suction space between the fan and the return air inlet 11 is avoided, and the gradual change pipe section 93 can guide the air in the round pipe section 92 to enter the square pipe section 91; the control system selectively controls the opening and closing of the return air door 10 and the fresh air door according to indoor air quality parameters detected by the air quality sensor, so that whether fresh air in the external environment is introduced to update air in the indoor environment where the air conditioner is located is controlled, the problem that the indoor air quality is poor due to long-time use of the air conditioner can be solved, and the intelligent level of the air conditioner can be improved.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "inside", "outside", and the like, which indicate orientation or positional relationship, are used with reference to directions defined herein, and these terms are used merely for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus should not be construed as limiting the present invention.

It should be understood that although the present description refers to embodiments, not every embodiment contains only a single technical solution, and such description is for clarity only, and those skilled in the art should make the description as a whole, and the technical solutions in the embodiments can also be combined appropriately to form other embodiments understood by those skilled in the art.

The above-listed detailed description is only a specific description of a possible embodiment of the present invention, and they are not intended to limit the scope of the present invention, and equivalent embodiments or modifications made without departing from the technical spirit of the present invention should be included in the scope of the present invention.

Claims (10)

1. The utility model provides a floor type air conditioner indoor unit, includes the casing, its characterized in that, the casing includes bottom plate and air outlet, the air outlet is located the casing is kept away from the one end of bottom plate, just the air outlet with distance H between the bottom plate is 1.8 ~ 2.0m, the air outlet has horizontal relative first end and second end, first end with distance a between the second end is greater than the vertical height b of air outlet.

2. The floor type air conditioning indoor unit according to claim 1, wherein the casing is cylindrical, the air outlet is arc-shaped and is provided coaxially with the casing, and a central angle of the air outlet is 100 to 120 °.

3. The floor type air-conditioning indoor unit as claimed in claim 1, wherein the vertical height b is 50-80 mm.

4. The floor type air conditioner indoor unit as claimed in claim 1, further comprising a pair of air deflectors, wherein a pivot shaft is provided at a lateral edge of each air deflector, the air outlet has an upper side and a lower side which are vertically opposite to each other, and the pair of air deflectors are pivotally connected to the upper side and the lower side through respective pivot shafts.

5. The floor type air conditioner indoor unit as claimed in claim 4, further comprising a pair of air guide plate driving mechanisms, wherein the pair of air guide plate driving mechanisms are respectively connected to the pair of air guide plates and respectively drive the pair of air guide plates to rotate.

6. The floor type air conditioner indoor unit of claim 5, wherein the air deflector driving mechanism comprises a motor, a first gear, a second gear meshed with the first gear, a rocker arm coaxially connected with the second gear, and a connecting arm connected with the air deflector, the motor is connected with the first gear and drives the first gear to rotate, the number of teeth of the first gear is smaller than that of the second gear, the rocker arm is provided with a sliding groove, one end of the connecting arm, which is far away from the air deflector, is provided with a convex block, and the convex block is clamped in the sliding groove and can slide along the sliding groove.

7. The floor type air conditioner indoor unit of claim 6, further comprising an installation part, wherein the installation part comprises a first vertical plate close to the air outlet and a second vertical plate far away from the air outlet, the first vertical plate and the second vertical plate are transversely arranged oppositely to form an installation cavity therebetween, the motor, the first gear and the second gear are located in the installation cavity, the rocker arm and the connecting arm are located in the air outlet, and the second gear and the rocker arm are connected through a fixed shaft which transversely penetrates through the first vertical plate.

8. The floor type air conditioner indoor unit of claim 4, wherein the pair of air deflectors have a closing position closing the air outlet, and in the closing position, ends of the pair of air deflectors, which are away from the respective pivot shafts, are in contact with each other.

9. The indoor unit of claim 1, wherein the casing comprises an outer casing and an inner casing disposed in the outer casing, the air outlet is disposed in the inner casing, the outer casing is opened with an air window, the air outlet is exposed in the air window, and the indoor unit further comprises an inner casing driving mechanism for driving the inner casing to move up and down relative to the outer casing.

10. The floor type air conditioning indoor unit of claim 9, wherein the inner casing driving mechanism drives the inner casing to rotate relative to the outer casing.

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