CN205137664U - Air conditioner - Google Patents

Abstract

The utility model discloses an air conditioner, which comprises a housing of an indoor unit, an air supply port is formed at the front of the housing, and at least two air inlets are formed on both sides of the housing. An air inlet is formed at the rear of the housing and between the two air inlets, and a through air channel is formed on and/or inside the housing, one end of the through air channel communicates with the air supply port, and the other end communicates with the air introduction port , the through-air passage includes an air induction part extending from the air introduction port to the air supply port and an air supply part extending from the air supply port to the air introduction port, between the end of the air induction part far away from the air introduction port and the beginning of the air supply part close to the air introduction port Two air outlets are formed between them, a fan is formed between each air outlet and an air inlet, the air outlet direction of the fan is towards the corresponding air outlet, and a heat exchange is formed between each fan and an air inlet device. The air conditioner of the utility model has the advantages of large induced air volume and uniform air mixing.

Description

an air conditioner

technical field

The utility model belongs to the technical field of air conditioning, and in particular relates to an air conditioner.

Background technique

The air conditioner that can blow out the heat-exchanged air after the heat exchange by the heat exchanger normally, and introduce the external non-heat-exchanged air by generating negative pressure to realize the mixed air supply is the focus and focus of air-conditioning technology research and development in recent years.

The applicant once applied for a vertical air conditioner, in which a fan is arranged at the lower part of the air conditioner, and an air-conditioning air supply device is arranged at the upper part of the air conditioner. When the air conditioner is running, under the action of the fan, the indoor air is sucked into the heat exchanger for heat exchange; the heat exchanged air after heat exchange is blown to the air supply device of the air conditioner, and under the action of the air supply device of the air conditioner, the external non- The heat-exchange air is sucked into the air-conditioning air supply device; the heat-exchange air and non-heat-exchange air are mixed in the air-conditioner air supply device, and the mixed air is sent to the room. Such mixed wind is relatively soft, and the user will feel more comfortable when it blows on the body, which improves the user's comfort experience effect. At the same time, it also increases the overall air intake of the air conditioner, speeds up the flow of indoor air, and further improves the overall uniformity of indoor air. But in this vertical air conditioner, because the air outlet of the air conditioner air supply device is an annular air outlet, the air outlet direction of the fan cannot directly face the air outlet, so that the heat exchange air sent into the air conditioner air supply device is not uniform enough, for To ensure the amount of inhaled non-heat exchange air, the structural requirements of the air-conditioning air supply device are relatively high, and components such as air distribution components need to be installed in the air-conditioning air supply device, and the structure is complex.

The Chinese patent application published as CN103256658A discloses a floor-standing air conditioner indoor unit, which includes a floor-standing body and an air supply part. The floor-standing body has an air inlet, and the air supply part includes two symmetrically arranged hollow shells. The air outlets are connected, and the indoor unit of the floor-standing air conditioner has an airflow passage through the front and rear. The two hollow shells are spaced apart from each other, and the airflow passage runs through the two hollow shells. An exhaust port is arranged symmetrically at the air inlet. However, this floor-standing air conditioner indoor unit also has the problems that the air outlet direction of the fan is not directly toward the air outlet, the heat exchange air entering the airflow channel is not uniform enough, and the inhaled non-heat exchange air is less. Moreover, since the air exhaust port on the hollow shell is arranged at the air inlet of the air flow channel, the external air is sucked in without combing and disorderly, not only the inhaled air volume is small, but also the inhalation direction is chaotic, which is different from the air blown out of the air exhaust port. The heat exchange air is not mixed evenly enough.

The Chinese patent application with publication number CN104879904A discloses an air conditioner, comprising: a housing, at least two air outlets are formed on the front of the housing and an air inlet is formed on the rear, and an air outlet is provided between at least two air outlets. The wind tunnel runs through the casing along the front and rear direction, and the wind tunnel is configured such that when at least two air outlets blow out the wind forward, the wind tunnel forms a negative pressure so that the air at the rear side of the wind tunnel moves forward. By arranging a wind tunnel between at least two air outlets, the wind pressure can be stabilized, the air output volume of the air conditioner can be increased, and the softness of the air output by the air conditioner can be improved, thereby improving the overall performance of the air conditioner. But in the disclosed air conditioner, its wind wheel is a cross-flow wind wheel, and the front end outlet of the air outlet and the wind tunnel is all formed on the front part of the housing, and the rear volute forming the cross-flow wind wheel air duct has a very long pressure diffuser. part. The wind blown from the two air outlets is restored by the static pressure of the diffuser section, and the wind pressure at the air outlet is high, which will quickly fill the wind tunnel, resulting in a very low negative pressure in the wind tunnel, and the wind tunnel induces an extremely high amount of air. less, the increase in the air output of the air conditioner is extremely limited. Moreover, since the air outlet and the air outlet at the front end of the wind tunnel are both formed at the front of the casing, the heat exchange air blown from the air outlet and the non-heat exchange air introduced from the wind tunnel can only be mixed at the front end of the casing and outside the casing. Insufficient mixing and poor air supply softness.

Contents of the invention

The purpose of the utility model is to provide an air conditioner with large induced air volume and uniform air mixing, so as to improve the overall performance of the air supply of the air conditioner.

In order to realize above-mentioned utility model purpose, the utility model adopts following technical scheme to realize:

An air conditioner, comprising a casing of an indoor unit, an air outlet is formed at the front of the casing, two air inlets are formed at least on both sides of the casing, and at the rear of the casing 1. An air induction port is formed between the two air inlets, and a through-air channel is formed on the housing and/or inside the housing, and one end of the through-air channel is connected to the air supply port The other end communicates with the air introduction port, and the through air channel includes an air introduction part extending from the air introduction port to the air supply port and an air supply part extending from the air supply port to the air introduction port. Two air outlets are formed between the end of the air introduction part away from the air introduction port and the beginning of the air supply part close to the air introduction port, and each of the air outlets and one of the air inlets A fan is formed therebetween, and the air outlet direction of the fan faces the corresponding air outlet, and a heat exchanger is formed between each fan and one air inlet.

In the above-mentioned air conditioner, the air supply port, the air induction port and the air outlet are all strip-shaped, the fan is adapted to the air outlet in the length direction, and the heat exchanger is The direction is adapted to the fan.

According to the above-mentioned air conditioner, the heat exchanger is an integrated arc heat exchanger.

As for the above air conditioner, the air outlet is formed with a swing blade and/or a wind deflector for adjusting the air outlet direction of the air outlet.

In the air conditioner as described above, an air volume adjusting portion is formed at the air induction port or in the air induction portion to adjust the amount of air introduced from the air induction port into the through-air duct.

In the above air conditioner, the air volume adjusting part is configured to adjust the air volume of the induced air entering the through-air passage from the air introduction port in a manner of rotating around a rotating shaft.

According to the above air conditioner, the air volume adjustment part is formed in the air introduction part, near the end position of the air introduction part away from the air introduction port.

In the air conditioner as described above, a boss protruding inward is formed on the inner wall of the air induction part, the air volume adjustment part includes a rotating shaft and a baffle that can rotate around the rotating shaft, and the rotating shaft is formed on the boss Above, the length of the baffle matches the length of the air-inducing part, and the boss and the baffle are arranged so that when the baffle is fully opened, the baffle is located on the boss and is in contact with the boss. The inner wall of the air-inducing part is attached, and when the baffle is completely closed, the edge of the baffle away from the rotating shaft overlaps the boss.

In the above-mentioned air conditioner, the two air outlets and the two fans adapted to the two air outlets are left-right symmetrical about the axis of symmetry perpendicular to the air supply outlet in the through-air channel.

In the air conditioner as described above, the inner diameter of the end of the air induction part away from the air introduction port is smaller than the inner diameter of the beginning end of the air supply part close to the air introduction port, and the air outlet is configured to flow from the air outlet The air blown out from the tuyere is directed toward the air supply part.

In the above-mentioned air conditioner, the air outlet is formed at the middle position between the air introduction port and the air supply port, or the air outlet is formed between the air introduction port and the air supply port, and is closer to the The location of the air intake.

In the above-mentioned air conditioner, in the direction along the central axis of the through-air channel perpendicular to the air inlet, the end of the air induction part away from the air inlet and the end of the air inlet near the air inlet The distance between the starting ends is H, the length of the air induction part along the central axis direction perpendicular to the air supply port is 2-3 times of H, and the air supply part is along the direction perpendicular to the air supply port. The length of the tuyere in the direction of the central axis is 3-4.5 times of H.

In the above-mentioned air conditioner, the tangent line at the starting end of the air supply part close to the air introduction port is in the air outlet direction along with the central axis of the through air passage perpendicular to the air supply port along the direction from the air introduction port. The direction of the air supply port forms a first included angle, and the angle of the first included angle is 25-45°.

In the above-mentioned air conditioner, each of the air outlets is formed with a first opening extending from the end of the air introduction part away from the air introduction port and extending toward the air inlet in a direction away from the through air channel. A volute, and a second volute extending from the starting end of the air supply part close to the air inlet, in a direction away from the through-air passage toward the air inlet, the fan is a cross-flow fan, the The cross-flow fan is formed in the air outlet duct defined by the first volute and the second volute.

In the above-mentioned air conditioner, the distance between the end of the air induction part at the air outlet away from the end of the air induction port and the central axis of the cross-flow fan corresponding to the air outlet is the radius of the cross-flow fan 1.4-2 times of the air outlet; the distance between the beginning of the air supply part at the air outlet and the edge of the cross-flow fan corresponding to the air outlet is 1.1- 1.6 times.

According to the above air conditioner, in the direction along the central axis perpendicular to the air supply port, the cross-flow fan is formed in the housing at a position closer to the air introduction port.

In the above-mentioned air conditioner, in the direction perpendicular to the central axis of the air supply port, the distance between the central axis of the cross-flow fan and the straight line where the air supply port is located is the distance between the central axis of the cross-flow fan and 1.4-2 times the distance of the straight line where the air inlet is located.

In the air conditioner as described above, the diameter of the air-introduction part is tapered from the air-introduction port to the air-supply port, and the air-supply part is at least near the air-supply port from the air-introduction port to the air-supply port. The inner diameter of the air supply port gradually expands.

According to the air conditioner as described above, the inner diameter of the air supply part is first tapered and then gradually expanded from the air introduction port to the air supply port.

In the above-mentioned air conditioner, in the direction along the line connecting the central axes of the two cross-flow fans, the narrowest part of the inner diameter of the air-introduction part is the end of the air-introduction part away from the air-introduction port, so The width of the narrowest part of the inner diameter of the air induction part is 1.2-2 times the radius of the cross-flow fan; 2.1-3 times; the width of the narrowest part of the air supply part is 1.5-2.5 times the radius of the cross-flow fan.

Compared with the prior art, the advantages and positive effects of this utility model are: the utility model forms an air supply port and an air inlet on the indoor unit, forms an air outlet on the through-air duct, and forms an air outlet in the indoor unit with the direction of the air outlet facing the air outlet. The fan makes the distance between the fan and the through-air channel of the mixed air relatively close, and the heat-exchanged air after heat exchange by the heat exchanger can evenly enter the through-air channel with a shorter path and a faster speed under the action of the fan , while moving forward in the through-air channel, a large negative pressure is formed in the through-air channel, and more non-heat exchange air is introduced from the outside to mix with the heat exchange air to form a mixed air, which can spread quickly and evenly from the air supply port to each part of the human body, so that the temperature felt by different parts of the human body is relatively uniform and comfortable; moreover, the through-air duct has a rear air-inducing part and a front air-supply part, and the air outlet is formed between the air-inducing part and the air-supplying part, thereby , use the air induction part to comb the inhaled non-heat exchange air, which not only helps to increase the air suction volume, but also improves the mixing uniformity of the non heat exchange air and heat exchange air. The partition part and the air supply part provide enough mixing space to further ensure the uniformity of the air mixing and improve the comfort and uniformity of the air supply. In addition, by forming an air volume adjustment part at the air introduction port or in the air introduction part, the air volume from the air introduction port into the through-air passage can be adjusted according to the needs, and the effective control of the air introduction volume can be realized, so as to meet the needs of different users or the same user under different usage conditions. There is a selective use requirement on whether to induce air, and it can adjust the ratio of heat-exchange air and non-heat-exchange air contained in the mixed air, and has a wide range of applications.

After reading the specific implementation of the utility model in conjunction with the accompanying drawings, other features and advantages of the utility model will become clearer.

Description of drawings

Fig. 1 is the front view of an embodiment of the utility model air conditioner;

The rear view of the air conditioner of Fig. 2 Fig. 1;

Fig. 3 is a side view of the air conditioner of Fig. 1;

Fig. 4 is AA ^' of Fig. 1 to sectional view;

Fig. 5 is a structural exploded view of the air conditioner of Fig. 1;

Fig. 6 is the AA ^' to sectional view of the air conditioner of Fig. 1 in the fully closed state of the damper;

Fig. 7 is the AA ^' direction sectional view of the air conditioner of Fig. 1 when the baffle plate is in a non-completely closed state;

Fig. 8 is a perspective view of another embodiment of the air conditioner of the present invention.

detailed description

The technical solution of the present utility model will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

First, a brief description of the technical terms involved in the specific implementation:

When referring to the front or back of each structural component, the following is defined by the position of the structural component relative to the user in normal use; when describing the front or rear of multiple structural components, it is also defined as The definition of the position of a device composed of multiple structural parts relative to the user in normal use. Moreover, it should be noted that the use of front or back is only for convenience and simplification of description, and does not indicate or imply that the device or structure referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be interpreted as Restrictions on utility models. The following heat exchange wind refers to the wind from the inside of the air conditioner after heat exchange by the heat exchanger; the non-heat exchange wind refers to the wind from the environment space where the air conditioner is located, which is relative to the heat exchange wind and does not directly come from The wind of the heat exchanger; the mixed wind refers to the wind formed by mixing the heat exchange wind and the non-heat exchange wind.

Please refer to an embodiment of the air conditioner of the present invention shown in Fig. 1 to Fig. 5, specifically a vertical air conditioner indoor unit. Wherein, Fig. 1, Fig. 2 and Fig. 3 are respectively the front view, rear view and side view of the air conditioner indoor unit of this embodiment, Fig. 4 is the AA ^' direction sectional view in the main view of the figure, and Fig. 5 is the air conditioner indoor unit exploded view of the structure.

The indoor unit of the air conditioner in this embodiment includes a housing, an air supply port is formed at the front of the housing, and at least two air inlets are formed on both sides of the housing. Specifically, the casing includes a plate-type front casing 1 and a U-shaped rear casing 2, both of which are detachably assembled together. An air outlet 11 is formed on the front case 1, and a first air inlet 21 and a second air inlet 22 are respectively formed on the rear case 2, specifically on the left and right sides of the rear case 2, and the first air inlet The air outlet 21 also extends toward the rear of the rear case 2 , and the second air inlet 22 also extends toward the rear of the rear case 2 . An air inlet 23 is formed between the first air inlet 21 and the second air inlet 22 at the rear of the rear case 2 . Moreover, both the air supply port 11 and the air introduction port 23 are strip-shaped, and are adapted in position and size. For example, the positions of the air supply port 11 and the air introduction port 23 are corresponding in the front and back directions, and are equal or substantially equal in length and equal or substantially equal in width. Of course, the length and width may also be unequal. For example, to realize large-area air supply, the length and width of the air supply port 11 are both greater than the length and width of the air introduction port 23 . This embodiment does not specifically limit it. Regarding the length of the air supply port 11 and the air introduction port 23, taking into account the required height of the cabinet and the general activity area of the indoor human body, the preferred length is about 1m, and the lower end is a certain distance from the ground, for example, the lower end is about 50cm from the ground.

A through-air channel 3 is formed on and/or inside the housing, wherein the two ends of the through-air channel 3 communicate with the air supply port 11 and the air introduction port 23 respectively. Specifically, the front end of the through air channel 3 communicates with the air supply port 11 , and the rear end of the through air channel 3 communicates with the air introduction port 23 . Moreover, the air blowing port 11 forms a front opening of the through-air passage 3 , and the air introduction port 23 forms a rear end opening of the through-air passage 3 . The formation of the through-air channel 3 on the housing and/or inside the housing as defined here means that the air channel wall forming the through-air channel 3 can be integrally formed with the housing; it can be separate, can be fixed with the housing or not The air duct wall fixed to the housing; of course, part of the air duct wall may be integrally formed with the housing, and part of the air duct wall may be fixed to a part of the air duct wall formed on the housing.

As for the through air channel 3 , it includes an air induction part 31 and an air supply part 32 arranged at intervals. Specifically, the air-introduction part 31 is located at the rear of the entire through-air passage 3, starting from the air-introduction opening 23 and extending toward the air supply port 11; , extending toward the direction of the air inlet 23 . The end of the air introduction part 31 away from the air introduction port 23, that is, the front end of the air introduction part 31 is the end of the air introduction part 31, and the end of the air supply part 32 near the air introduction port 23, that is, the rear end of the air supply part 32 is the air supply. At the beginning of the part 32, two strip-shaped air outlets are formed between the end of the air induction part 31 and the beginning of the air supply part 32, which are respectively the first air outlet 41 on the left side and the second air outlet 42 on the right side. . A fan is formed between each air outlet and an air inlet, the air outlet direction of the fan faces the corresponding air outlet, the length of the fan is adapted to the corresponding air outlet, and the fan is configured to introduce wind from the air inlet, And sent to through the air duct 3 through the air outlet. Specifically, a first fan 51 is formed between the first air outlet 41 on the left side and the first air inlet 21 on the left side, and the first fan 51 is configured to blow the wind outside the housing from the first air inlet 21 is introduced and sent to the through air duct 3 through the first air outlet 41; a second fan 52 is formed between the second air outlet 42 on the right and the second air inlet 22 on the right, and the second fan 52 is configured to introduce the wind outside the casing from the second air inlet 22 and send it into the through air passage 3 through the second air outlet 42 . A heat exchanger is also formed between each fan and an air inlet. Specifically, a first heat exchanger 81 is formed between the first fan 51 and the first air inlet 21 , and a second heat exchanger 82 is formed between the second fan 52 and the second air inlet 22 . Moreover, the length of the fan is preferably greater than the length of the corresponding air outlet and the length of the heat exchanger. Among them, the first heat exchanger 81 and the second heat exchanger 82 are both integrated arc heat exchangers with a large heat exchange area. Compared with the arc structure formed by the multi-stage structure, the integral arc structure is convenient It is installed in the shell and occupies less internal space.

In this embodiment, a strip-shaped air outlet 11 and an air inlet are formed on the indoor unit, a strip-shaped air outlet is formed on the through air channel 3, and a fan adapted to the strip-shaped air outlet is formed in the indoor unit, so that the fan The distance from the through-air passage 3 of the mixed air is relatively close, and the heat-exchanged air after heat exchange by the heat exchanger can evenly enter into the through-air passage 3 with a shorter path and a faster speed under the action of the fan. While moving forward in the through-air passage 3, a relatively large negative pressure is formed in the through-air passage 3, and more non-heat-exchange air from the outside is introduced from the air inlet 23 to mix with the heat-exchange air to form a mixed wind. The shaped air supply port 11 quickly and evenly diffuses to various parts of the human body, so that the temperature felt by different parts of the human body is relatively uniform and comfortable. And the through air passage 3 has the air-introducing part 31 of the rear and the air-sending part 31 of the front, and two air outlets are formed between the air-introducing part 31 and the air-sending part 32, thereby, utilize the air-introducing part 31 to inhale non-inhalation. Combing the heat-exchanging air not only helps to increase the air suction volume, but also improves the mixing uniformity of the non-heat-exchanging air and the heat-exchanging air. Provide enough mixing space to further ensure the uniformity of air mixing and improve the comfort and uniformity of air supply. In addition, since the first air outlet 41 and the second air outlet 42 are formed on the left and right sides of the through-air duct 3, and they are opposite to each other, the wind blown from the two air outlets affects each other, and the air outlets of each other are formed. The wind wall makes the heat exchange air blown out from the air outlet mix with the non-heat exchange air inhaled from the rear, while converting a part of the wind energy from kinetic energy to potential energy to realize static pressure recovery, ensuring that the air sent from the air outlet 11 not only has a large air volume, And the air supply distance is long, which avoids the problem that the heat exchange efficiency decreases due to the air supply distance being too short, and the air sent by the air supply port 11 is quickly re-entered into the housing through the air inlet for heat exchange.

In this embodiment, the central axis perpendicular to the air supply port 11 in the through air duct 3 is Z1, the first air outlet 41 and the second air outlet 42 are left and right symmetrical with the central axis Z1 as the axis of symmetry, and the first fan 51 and the second fan 51 The fan 52 is also left-right symmetrical with the central axis Z1 as the axis of symmetry, which further improves the uniformity of air induction, air mixing and air supply.

The positions of the two air outlets and their air outlet directions have an important influence on the air supply performance. In this embodiment, the first air outlet 41 and the second air outlet 42 are constructed as follows:

The inner diameter of the end of the air induction part 31 away from the air introduction port 23 is smaller than the inner diameter of the beginning of the air supply part 32 near the air introduction port 23, that is, the inner diameter of the rear end of each air outlet is smaller than the inner diameter of its front end, so that each The air outlets are configured such that the wind blown from the air outlets is directed toward the air blowing portion 32 . In this way, a negative pressure zone can be formed in front of the air introduction part 31, and the external non-heat exchange air can be introduced into the air introduction part 31 by negative pressure to be combed and then mixed with the heat exchange air.

Moreover, the first air outlet 41 and the second air outlet 42 are preferably formed in the middle of the air inlet 23 and the air outlet 11, or at a position closer to the air inlet 23, that is, the two air outlets are preferably formed in the indoor unit casing. A position in the middle or slightly behind the middle of the interior. In this way, it is possible to ensure that the air-introducing part 31 with sufficient length can comb the introduced non-heat-exchange air, and the air-supply part 32 with sufficient length can be left for the non-heat-exchange air and heat-exchange air to mix evenly and restore static pressure. Ensure the uniformity of air supply and the distance of air supply. As a more preferred embodiment, as shown in FIG. 4 , in the direction along the central axis Z1 perpendicular to the air outlet 11 in the through-air duct, the end of the air introduction part 31 away from the air introduction port 23 and the end of the air delivery part 32 close to the air introduction port The distance between the starting ends of 23 is H, that is, the length of the first air outlet 41 or the second air outlet 42 in the front-to-back direction is H, then the air-introducing part 31 is along the central axis Z1 direction (that is, the front-to-back direction) The length H1 is 2-3 times of H, that is, H1=(2-3)H, and the length H2 of the air supply part along the direction 32 along the central axis Z1 (that is, the front and rear direction) is 3-4.5 times of H, that is H2=(3-4.5)H.

In addition, the air outlet direction at the front end of the air outlet, that is, the beginning of the air supply part 32 close to the air introduction opening 23 will affect the air supply performance. In this embodiment, the tangent direction forms a first angle α1 between the air outlet direction and the central axis Z1 perpendicular to the air supply port 11 in the through-air duct along the direction from the air introduction port 23 to the air supply port 11. The angle is an acute angle, and the number of angles should not be too small or too large, preferably, 25°≤α1≤45°. When the first included angle α1 is within this angle range, it can not only ensure that a strong enough negative pressure is formed in the through air passage to introduce more non-heat exchange air, but also not weaken the wind speed, so that the air sent out by the air outlet 11 Has a certain air supply distance.

The first fan 51 and the second fan 52 are preferably cross-flow fans. Moreover, the end 311 (that is, the upper end of the first air outlet 41 ) away from the air introduction part 31 from the air introduction port 23 is formed on the first air outlet 41 , facing away from the direction of the through air passage 3 and facing the first air inlet 21 . The extended first volute 611 of the first fan, and the starting end 321 (that is, the lower end of the first air outlet 41 ) from the air supply part 32 close to the air introduction port 23 , facing away from the direction of the through air passage 3 toward the first air inlet The first fan second volute 612 extended by 21, the first fan 51 using a cross-flow fan is located in the air outlet duct defined by the first fan first volute 611 and the first fan second volute 612 . Similarly, the second air outlet 42 is formed with a terminal 312 (that is, the upper end of the second air outlet 42 ) away from the air introduction part 31 away from the air introduction port 23 , facing away from the direction of the through air channel 3 and facing the second air inlet. The first volute 621 of the second fan extending from 22, and the starting end 322 (that is, the lower end of the second air outlet 42) from the air supply part 32 close to the air introduction port 23 is directed away from the direction of the through air passage 3 toward the second inlet. The second fan second volute 622 extending from the tuyere 22 and the second fan 52 using a cross-flow fan are located in the air outlet duct defined by the second fan first volute 621 and the second fan second volute 622 . Wherein, the first volute of each fan is also the rear volute of the cross-flow fan, and the second volute is the front volute of the cross-flow fan.

For the convenience of processing and shape control, the first fan 51, the first fan first volute 611, the first fan second volute 612, the second fan 52, the second fan first volute 621 and the second fan second volute The shells 622 are all independent components, and each component is assembled and fixed by the base 201 and the top plate 202 during assembly. The fan motor 203 for driving the first fan 51 and the fan motor 204 for driving the second fan 52 are also fixed on the top plate, and are respectively rotatably connected with the corresponding fans.

Moreover, after adopting the cross-flow fan, the positions of the two fans preferably meet the following structural conditions:

Taking the structure of the left part of the central axis Z1 as an example, as shown in FIG. The distance is L1, which is 1.4-2 times the radius of the first fan 51, that is, L1=(1.4-2)r, where r is the radius of the first fan 51; and the air supply at the first air outlet 41 The distance between the beginning of the portion 32 near the air inlet 23 and the fan edge of the first fan 51 corresponding to the air outlet is L2, L2=(1.1-1.6)r.

By limiting the distance L1 above, the first fan first volute 611, which is the rear volute of the first fan 51, forms a shorter diffuser section, so that the heat exchange air sent by the first air outlet 41 has a higher initial The speed and kinetic energy are large, and under the effect of the wall surface, when the sent heat exchange air flows forward along the wall surface of the first fan, the second volute 612 and the air supply part 32, the negative pressure in the through air passage 3 can be further reduced , so that more non-heat exchange air from the outside can be introduced through the air introduction port 23 and the air introduction portion 31 . By setting the distance L2 as above, the air sent out by the first air outlet 41 can flow forward more quickly along the wall surface of the air supply part 32 , which is also conducive to the formation of negative pressure.

In the direction along the through-flow channel 3 and perpendicular to the central axis Z1 of the air outlet 11 , the cross-flow fan is preferably formed in the casing, closer to the air-introduction opening 23 . That is, the cross-flow fan is preferably formed at a middle rear position of the casing. Still taking the structure of the left part of the central axis Z1 as an example, as shown in FIG. The distance between the axis and the straight line where the air inlet 23 is located is L4, and L3=(1.4-2)L4. Thus, it is more beneficial to improve the mixing uniformity of the heat exchange air and the non-heat exchange air.

The structure on the right side of the central axis Z1 and the above-mentioned structure on the left side can be symmetrically formed with the central axis Z1 as the axis of symmetry.

Moreover, for the air-introduction part 31, it is preferable that the inner diameter of the air-introduction part 31 gradually shrinks from the air-introduction port 23 to the direction of the air supply port 11, that is, from the rear to the front, the inner diameter of the air-induction part 31 is tapered, so as to increase the amount of non-heat exchange air before the air mixing. The wind speed improves the mixing efficiency. For the air supply part 32, at least in the part near the air supply port 11, the inner diameter gradually expands from the air introduction port 23 to the direction of the air supply port 11, that is, at least the front part of the air supply part 32 close to the air supply port 11 has an inner diameter from the rear to the front. Gradual expansion. More preferably, the inner diameter of the air supply part 32 is first tapered and then gradually expanded from the air introduction port 23 to the air supply port 11 . In Fig. 4, the connecting line between the central axes of the first fan 51 and the second fan 52 using a cross-flow fan is Z2. At the end of the air-introduction port 23, the width W1 of the narrowest part of the air-introduction part 31 (that is, the opening width of the rear edge of the two air outlets in the horizontal direction) is 1.2-2 times the radius r of the cross-flow fan, that is, W1 =(1.2-2)r; the inner diameter of the air supply part 32 tapers from the back to the front and then gradually expands, and the width W2 of the narrowest part of the inner diameter is 1.5-2.5 times the radius r of the cross-flow fan, that is, W2=( 1.5-2.5) r; and the width W3 of the inner diameter of the air supply part 32 near the beginning of the air inlet 23 (that is, the opening width of the front edges of the two air outlets in the horizontal direction) is 2.1- 3 times, namely W3=(2.1-3)r.

In addition, an air volume adjusting portion is formed in the air introduction portion 31 to adjust the air volume introduced from the air introduction port 23 into the through air duct 3 . Specifically, in this embodiment, the air volume adjusting portion is formed in the air-introducing portion 31 near the end of the air-introducing portion 31 away from the air-introducing opening 23 . Moreover, the air volume regulating part includes a rotating shaft 91 and a baffle 92 that can rotate around the rotating shaft 91 . A boss 313 protruding inward is formed on the inner wall of the air-inducing portion 31 , and the rotating shaft 91 is formed on the boss 313 . The length of the baffle plate 92 is adapted to the length of the air-inducing portion 31 . The matching here means that when the baffle plate 92 is fully closed, the air-introduction part 31 can be completely closed without introducing non-heat exchange air. Moreover, in conjunction with the fully open state of the baffle 92 shown in FIG. 4 , the fully closed state of the baffle 92 shown in FIG. 6 , and the cross-sectional view shown in FIG. The plate 92 and the boss 313 are set such that when the baffle 92 is fully opened, the baffle 92 is located on the boss 313 and is attached to the inner wall of the air-introducing part 31, so as not to block the air volume entering the air-introducing part 31 from the air-introducing port 23; When the baffle 92 is completely closed, the edge of the baffle 92 away from the rotating shaft 91 overlaps the boss 313 to completely shield the induced wind. And when it is necessary to induce wind and adjust the induced air volume, the size of the open air-introduced part 31 inlet can be adjusted by adjusting the rotation angle of the baffle plate 92, and then realize the regulation of the induced air volume.

Since there is an air volume regulating part including the baffle 92, the baffle 92 can be controlled manually or electrically (when the rotating shaft 91 is connected with a drive motor) to select to fully open the air introduction part 31, so that the non-heat exchange air can flow from the air introduction port 23 It enters the through-air channel 3 and then mixes with the heat exchange air entering the through-air channel 3 to form a mixed air, which is then sent out from the air outlet 11 . Alternatively, the baffle 92 can be controlled to completely close the air-introducing part 31 to realize the same air supply as the structure and mode of the existing air conditioner. In addition, the baffle plate 92 can also be controlled to cover part of the air introduction part 31, thereby controlling the non-heat exchange air volume entering from the air introduction port 23 and the air introduction part 31, and realizing the balance between the heat exchange air volume and the non-heat exchange air volume in the mixed wind. proportional adjustment.

In addition to arranging an air volume adjustment unit in the air introduction portion 31 , a manually or automatically controlled air volume adjustment unit may also be provided directly at the air introduction port 23 .

Please refer to the perspective view of another embodiment of the air conditioner of the present invention shown in Fig. 8, in this embodiment, two air outlets are respectively formed with swing vanes 43 for adjusting up and down the air outlet direction, and The wind deflector 44 for left and right adjustment of the air outlet direction. By changing the air outlet direction of the air outlet, the air supply direction of the air outlet 11 can be adjusted to meet the user's demand for controllable air outlet direction. The structure and driving mode of the swing blade 43 and the wind deflector 44 can be realized by adopting the existing technology. Other structures of the air conditioner in this embodiment are similar to those in the embodiment shown in Fig. 1 to Fig. 7, and will not be described in detail.

The above embodiments are only used to illustrate the technical solutions of the present utility model, and are not intended to limit it; although the utility model has been described in detail with reference to the foregoing embodiments, for those of ordinary skill in the art, the aforementioned implementation can still be carried out. The technical solutions described in the examples are modified, or some of the technical features are equivalently replaced; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions claimed by the utility model.

Claims (20)

1. An air conditioner, comprising a housing of an indoor unit, an air outlet is formed at the front of the housing, at least two air inlets are formed on both sides of the housing, An air induction port is formed at the rear and between the two air inlets, and a through air duct is formed on the housing and/or inside the housing, and one end of the through air duct is connected to the air supply The air outlet is connected, and the other end is connected with the air introduction port. It is characterized in that the through air passage includes an air introduction part extending from the air introduction port to the air supply port and an air introduction part extending from the air supply port to the air introduction port. The air supply part extending in the direction of the air outlet has two air outlets formed between the end of the air introduction part away from the air introduction opening and the beginning of the air supply part close to the air introduction opening, and each of the air outlets A fan is formed between one of the air inlets, and the air outlet direction of the fan faces the corresponding air outlet, and a heat exchanger is formed between each fan and one of the air inlets. 2. The air conditioner according to claim 1, wherein the air supply port, the air induction port and the air outlet are all strip-shaped, and the fan is suitable for the air outlet in the length direction matching, the heat exchanger is adapted to the fan in the length direction. 3. The air conditioner according to claim 1, wherein the heat exchanger is an integrated arc heat exchanger. 4 . The air conditioner according to claim 1 , characterized in that, swing vanes and/or wind deflectors for adjusting the air outlet direction of the air outlet are formed on the air outlet. 5 . The air conditioner according to claim 1 , characterized in that, an air volume adjusting portion is formed at the air induction port or in the air induction portion to adjust the amount of air induced from the air induction port into the through-air passage. 6 . 6 . The air conditioner according to claim 5 , wherein the air volume adjusting part is configured to adjust the air volume of the induced air from the air intake into the through-air duct by rotating around a rotation axis. 6 . 7 . The air conditioner according to claim 6 , wherein the air volume adjusting portion is formed in the air-introducing portion, close to an end of the air-introducing portion away from the air-introducing opening. 7 . 8 . The air conditioner according to claim 7 , wherein an inwardly protruding boss is formed on the inner wall of the air-inducing part, and the air volume adjusting part includes a rotating shaft and a baffle that can rotate around the rotating shaft. The rotating shaft is formed on the boss, the length of the baffle matches the length of the air-inducing part, and the boss and the baffle are arranged so that when the baffle is fully opened, the baffle The plate is located on the boss and attached to the inner wall of the air-inducing part, and when the baffle is completely closed, the edge of the baffle away from the rotating shaft overlaps the boss. 9. The air conditioner according to claim 1, characterized in that, the two air outlets and the two fans matched with the two air outlets are arranged in the through air channel perpendicular to the air supply port The central axis of is symmetrical about the axis of symmetry. 10. The air conditioner according to claim 1, characterized in that, the inner diameter of the end of the air induction part away from the air induction port is smaller than the inner diameter of the beginning end of the air supply part close to the air induction port, the The air outlet is configured such that air blown from the air outlet is directed toward the air blowing portion. 11. The air conditioner according to claim 1, wherein the air outlet is formed at the middle position between the air introduction opening and the air supply opening, or the air outlet is formed between the air introduction opening and the air supply opening. between the air outlets and closer to the air inlet. 12. The air conditioner according to claim 11, characterized in that, in the direction along the central axis of the through-air passage perpendicular to the air supply port, the end of the air introduction part away from the end of the air introduction port and the The distance between the starting ends of the air supply part close to the air introduction port is H, and the length of the air introduction part along the central axis direction perpendicular to the air supply port is 2-3 times of H. The length of the portion along the central axis direction perpendicular to the air outlet is 3-4.5 times of H. 13. The air conditioner according to claim 1, characterized in that, the tangent line at the beginning of the air supply part close to the air introduction port is perpendicular to the air supply port in the through air channel along the air outlet direction. The central axis forms a first angle along the direction from the air inlet to the air outlet, and the angle of the first angle is 25-45°. 14. The air conditioner according to any one of claims 1 to 13, characterized in that, each of the air outlets is formed with an end away from the air introduction part from the air introduction port so as to face away from the air outlet. The first volute extending in the direction of the through-air passage toward the air inlet, and the first volute extending from the starting end of the air-supply part close to the air-introduction port in a direction away from the through-air passage toward the air inlet In the second volute, the fan is a cross-flow fan, and the cross-flow fan is formed in an air outlet duct defined by the first volute and the second volute. 15. The air conditioner according to claim 14, characterized in that, the end of the air-introducing part located at the air-outlet away from the end of the air-introducing opening is between the central axis of the cross-flow fan corresponding to the air-outlet The distance is 1.4-2 times of the radius of the cross-flow fan; the distance between the beginning of the air supply part at the air outlet and the edge of the cross-flow fan corresponding to the air outlet is 1.1-1.6 times the radius of the cross-flow fan. 16. The air conditioner according to claim 14, characterized in that, in the direction along the central axis of the through-air channel perpendicular to the air supply port, the cross-flow fan is formed in the housing, closer to the At the location of the air intake. 17. The air conditioner according to claim 16, characterized in that, in the direction along the central axis perpendicular to the air supply port, the distance between the central axis of the cross-flow fan and the straight line where the air supply port is located is 1.4-2 times the distance between the central axis of the cross-flow fan and the straight line where the air inlet is located. 18. The air conditioner according to claim 14, characterized in that, the diameter of the air-introduction part is tapered from the air-introduction port to the direction of the air-supply port, and the air-supply part is at least close to the air-supply port. Part of the internal diameter gradually expands from the air induction port to the air supply port. 19 . The air conditioner according to claim 18 , characterized in that, the inner diameter of the air supply part first tapers and then gradually expands from the air induction port to the air supply port. 20 . 20. The air conditioner according to claim 19, characterized in that, in the direction along the line connecting the central axes of the two cross-flow fans, the narrowest inner diameter of the air induction part is the air induction part Away from the end of the air introduction port, the width of the narrowest part of the inner diameter of the air induction part is 1.2-2 times the radius of the cross-flow fan; the inner diameter of the air supply part near the beginning of the air introduction port is The width is 2.1-3 times the radius of the cross-flow fan; the width of the narrowest part of the air supply part is 1.5-2.5 times the radius of the cross-flow fan.