CN114396650A - Distributed air supply duct machine and distributed air supply device - Google Patents

Abstract

The invention provides a distributed air supply duct type air conditioner and a distributed air supply device, wherein the distributed air supply duct type air conditioner comprises: the air conditioner comprises a shell, a fan, a heat exchanger, a horizontal air outlet, a lower air outlet and a lower air return inlet, wherein the fan and the heat exchanger are both positioned in the shell, the horizontal air outlet is positioned at the horizontal side end of the shell to enable air to be discharged from the horizontal direction, the lower air return inlet is positioned at the lower end of the shell to enable air to be discharged from the lower portion, the lower air return inlet can suck air flow to enter the shell, the air flow passes through the heat exchanger and the fan and blows out from the horizontal air outlet or the lower air outlet, the air flow can be blown out from the horizontal air outlet under control in a refrigeration mode, and the air flow can be blown out from the lower air outlet under control in a heating mode. According to the invention, air outlet in two directions can be formed, so that the refrigerating comfort level and the heating comfort level of the air pipe machine are effectively improved, and the industrial problems that horizontal air supply cannot be performed in refrigeration and air supply cannot be performed in heating are solved.

Description

Distributed air supply air duct machine and distributed air supply device

technical field

The invention relates to the technical field of refrigeration, in particular to a distributed air supply air duct machine and a distributed air supply device.

Background technique

In recent years, family central air conditioners have the advantages of beautiful installation and small footprint because the internal units are ceiling-mounted (also known as air duct units), and their market share has been increasing. At present, the mainstream air duct machine has only one air outlet, the air supply area is limited, and the cooling horizontal air supply cannot be achieved, and the air is supplied under the heating, and the user's comfort experience is poor. In addition, most of the existing mainstream air duct machine structures have outlet air and return air on two sides that are perpendicular to each other, which cannot meet the different installation requirements of users. Some users have product requirements that the supply air and return air are in one direction, and some users have the requirement that the supply air and return air are perpendicular to each other.

Since the air duct machine in the prior art has only one air outlet, the air supply area is limited, and the horizontal air supply for cooling cannot be realized, and the air is supplied under heating, and the user's comfort experience is poor. In addition, most of the existing mainstream air duct machine structures have outlet air and return air on two sides that are perpendicular to each other, which cannot meet the different installation requirements of users. Some users have product requirements for supply air and return air in one direction, and some users have technical problems such as the demand for supply air and return air to be perpendicular to each other. Therefore, the present invention studies and designs a distributed air supply air duct machine and a distributed Air supply device.

SUMMARY OF THE INVENTION

Therefore, the technical problem to be solved by the present invention is to overcome the problem that the air duct machine in the prior art has only one air outlet, the air supply area is limited, and the horizontal air supply for cooling cannot be realized, the air is supplied under heating, and the user experience is poor. Therefore, a distributed air supply air duct machine and a distributed air supply device are provided.

In order to solve the above problems, the present invention provides a distributed air supply air duct machine, which includes:

A casing, a fan, a heat exchanger, a horizontal air outlet, a lower air outlet and a lower air return outlet, the fan and the heat exchanger are all located in the casing, and the horizontal air outlet is located at the level of the casing The side end, so that the air can be discharged from the horizontal direction, the lower air return port is located at the lower end of the casing so that the air can be discharged from below, the lower air return port can inhale the air flow into the casing, and through the exchange The heater and the fan are blown out from the horizontal air outlet or the lower air outlet. In the cooling mode, the air flow can be controlled to blow out from the horizontal air outlet, and in the heating mode, the air flow can be controlled Blow out from the lower air outlet.

In some embodiments, the horizontal air outlet includes a first horizontal air outlet and a second horizontal air outlet, the first horizontal air outlet is located at a horizontal side end of the casing, and the second horizontal air outlet is located at the other horizontal end of the casing;

The lower air outlet includes a first lower air outlet and a second lower air outlet, the first lower air outlet is located on the horizontal side of the lower return air outlet, and the second lower air outlet is located at the lower air outlet. the other side of the level.

In some embodiments, the blower includes a first blower and a second blower, the first blower and the second blower are spaced apart in a horizontal direction, and the first blower is close to the second blower relative to the second blower. The first horizontal air outlet and the first lower air outlet are arranged, the second fan is arranged close to the second horizontal air outlet and the second lower air outlet relative to the first fan, and the airflow can pass through The first fan blows out from the first horizontal air outlet or the first lower air outlet, and the airflow can be blown out from the second horizontal air outlet or the second lower air outlet through the second fan .

In some embodiments, it further includes a first air duct and a second air duct, the first fan and the partial structure of the heat exchanger are located in the first air duct, the second fan and the heat exchange Part of the structure of the device is located in the second air duct, and a first air valve is also arranged in the first air duct, and the first air valve can move to open the first horizontal air outlet and close the first air outlet at the same time. The lower air outlet, the first air valve can also be moved to close the first horizontal air outlet and open the first lower air outlet at the same time, the second air duct is also provided with a second air valve, the first air outlet The second air valve can move to open the second horizontal air outlet and close the second lower air outlet, and the second air valve can also move to close the second horizontal air outlet and open the second air outlet at the same time. Lower air outlet.

In some embodiments, the lower air return port includes a first lower air return port, a second lower air return port and a third lower air return port, the first lower air return port, the second lower air return port and the third lower air return port The lower air return openings are arranged in sequence in the horizontal direction, and the first lower air return opening is relatively close to the first lower air outlet, the second lower air return opening is relatively close to the second lower air outlet, and the third lower air outlet is relatively close to the second lower air outlet. The air return port is located between the first lower air return port and the second lower air return port.

In some embodiments, a first partition member is further provided in the first air duct, and the first partition member is located between the first lower air outlet and the first lower air return outlet to separate the two , the second air duct is also provided with a second partition, the second partition is located between the second lower air outlet and the second lower air return outlet to separate the two.

In some embodiments, the heat exchanger is disposed between the fan and the lower air return port, and the heat exchanger includes a first heat exchange part, a second heat exchange part, a third heat exchange part and a first heat exchange part. Four heat exchange parts, the first heat exchange part is connected to or adjacent to the second heat exchange part and the two form a first bending structure, the third heat exchange part and the fourth heat exchange part The second heat exchange part is connected to or adjacent to the third heat exchange part, and the two form a third bending structure, and the first heat exchange part The hot part is opposite to the first lower air return port to take in and exchange heat from the first lower air return port, and the second heat exchange part is opposite to a part of the third lower air return port to receive air from the third lower air return port. The lower return air inlet takes in air and exchanges heat, the third heat exchange part is opposite to the part of the third lower air return outlet to take in air and exchange heat from the third lower return air outlet, and the fourth heat exchange part is opposite to the part of the third lower return air outlet. The second lower air return ports are opposite to each other so as to take in air and exchange heat from the second lower air return ports.

The present invention further provides a distributed air supply device, which includes the distributed air supply air duct machine described in any one of the preceding items, and also includes a ceiling, the distributed air supply air duct machine is arranged on the ceiling, and the The ceiling is provided with a horizontal air outlet channel and a lower air outlet channel, the horizontal air outlet channel is opposite to and can communicate with the horizontal air outlet, and the lower air outlet channel is opposite to and communicated with the lower air outlet.

In some embodiments, when the horizontal air outlet includes a first horizontal air outlet and a second horizontal air outlet, and the lower air outlet includes a first lower air outlet and a second lower air outlet,

The horizontal air outlet channel includes a first horizontal air outlet channel and a second horizontal air outlet channel, the first horizontal air outlet channel is opposite to the first horizontal air outlet and can be communicated, and the second horizontal air outlet channel Opposite and communicate with the second horizontal air outlet; the lower air outlet channel includes a first lower air outlet channel and a second lower air outlet channel, the first lower air outlet channel and the first lower air outlet The second lower air outlet channel is opposite to and communicated with the second lower air outlet.

In some embodiments, the lower end of the suspended ceiling penetrates through a lower air return channel, and the lower air return channel is opposite to and communicated with the lower air return port.

In some embodiments, a side air return channel is provided through the side wall of the suspended ceiling, and the airflow can enter the interior of the suspended ceiling through the side return air channel and enter the interior of the cabinet through the lower air return port.

In some embodiments, the side return air channel includes a first side return air channel and a second side return air channel, the first side return air channel is located on a horizontal side of the ceiling, and the second side return air channel is located on a horizontal side of the ceiling. The air passage is located on the other horizontal side of the suspended ceiling, the first side return air passage can be communicated with the lower air return port, and the second side return air passage can also be communicated with the lower air return port.

The distributed air supply duct machine and the distributed air supply device provided by the present invention have the following beneficial effects:

In the present invention, by setting the horizontal air outlet at the horizontal side end of the casing and the lower air outlet at the lower end of the casing, air can be discharged from the horizontal air outlet and the air can be discharged from the lower air outlet respectively, especially in the cooling mode, the horizontal air supply can be performed. The cooling shower-type air supply is formed to improve the cooling comfort. In the heating mode, the air is discharged downward to improve the heating comfort. It can form two directions of air outlet, thereby effectively improving the cooling comfort and control of the duct fan. Thermal comfort, solves the industry problem of incapable of cooling horizontal air supply and heating down air supply; and also through the side air outlet in two directions, it can cool different areas with zonal air outlet, and down air in two different positions , which can be used for heating in different areas, and can be used for cooling and heating in different areas, so as to further improve the comfort of cooling and heating; The lower return air can meet the different needs of different users. Realize cooling and heating of two areas of one unit separately or at the same time, saving user costs.

Description of drawings

Fig. 1 is the unit structure schematic diagram of the present invention;

2 is a schematic diagram of the position of the air valve in the heating mode of the present invention;

Fig. 3 is the schematic diagram of the position of the air valve in the refrigeration mode of the present invention;

4 is a schematic diagram of a side return air double-side down air outlet air path in a heating mode of the present invention;

FIG. 5 is a schematic diagram of the lower left air outlet air path of the side return air in the heating mode of the present invention;

FIG. 6 is a schematic diagram of the lower right outlet air path of the side return air in the heating mode of the present invention;

7 is a schematic diagram of the air outlet air path on both sides of the return air under the heating mode of the present invention;

FIG. 8 is a schematic diagram of the air outlet air path from the lower left of the return air in the heating mode of the present invention;

FIG. 9 is a schematic diagram of the air outlet air path from the lower right of the return air in the heating mode of the present invention;

10 is a schematic diagram of the side return air left and right outlet air paths in the cooling mode of the present invention;

11 is a schematic diagram of the side return air left air outlet air path in the cooling mode of the present invention;

Fig. 12 is a schematic diagram of a side return air right outlet air path in a cooling mode of the present invention;

Figure 13 is a schematic diagram of the left and right return air outlet air paths in the cooling mode of the present invention;

14 is a schematic diagram of the left air outlet air path of the return air in the cooling mode of the present invention;

FIG. 15 is a schematic diagram of a right outlet air path of the return air in the cooling mode of the present invention.

Reference numerals are indicated as:

1. Housing; 2. Fan; 21. First fan; 22. Second fan; 3. Heat exchanger; 31, First heat exchange part; 32, Second heat exchange part; 33, Third heat exchange part ; 34, the fourth heat exchange part; 4, the horizontal air outlet; 41, the first horizontal air outlet; 42, the second horizontal air outlet; 5, the lower air outlet; 51, the first lower air outlet; 52, the second lower air outlet Air outlet; 6, lower return air outlet; 61, first lower air return outlet; 62, second lower air return outlet; 63, third lower air outlet; 71, first air duct; 72, second air duct; 81, first A damper; 82, a second damper; 91, a first partition; 92, a second partition; 100, a distributed air supply duct machine; 10, a ceiling; 101, a horizontal air outlet; 101a, a first Horizontal air outlet channel; 101b, second horizontal air outlet channel; 102, lower air outlet channel; 102a, first lower air outlet channel; 102b, second lower air outlet channel; 103, lower return air channel; 104, side return Air passage; 104a, the first side return air passage; 104b, the second side return air passage.

Detailed ways

As shown in Figure 1-15, the present invention provides a distributed air supply duct machine, which includes:

A casing 1, a fan 2, a heat exchanger 3, a horizontal air outlet 4, a lower air outlet 5, and a lower air return outlet 6, the fan 2 and the heat exchanger 3 are both located in the casing 1, and the The horizontal air outlet 4 is located at the horizontal side end of the casing 1 to allow air to be discharged from the horizontal direction. The lower air return port 6 is located at the lower end of the casing 1 to allow air to be discharged from below. The lower air return port 6 Air can be sucked into the casing 1, passed through the heat exchanger 3 and the fan 2, and blown out from the horizontal air outlet 4 or the lower air outlet 5. In the cooling mode, the air flow can be controlled Blowing out from the horizontal air outlet 4 , in the heating mode, the airflow can be controlled to be blown out from the lower air outlet 5 .

In the present invention, by setting the horizontal air outlet at the horizontal side end of the casing and the lower air outlet at the lower end of the casing, air can be discharged from the horizontal air outlet and the air can be discharged from the lower air outlet respectively, especially in the cooling mode, the horizontal air supply can be performed. The cooling shower-type air supply is formed to improve the cooling comfort. In the heating mode, the air is discharged downward to improve the heating comfort. It can form two directions of air outlet, thereby effectively improving the cooling comfort and control of the duct fan. Thermal comfort, to solve the industry problem of inability to cool horizontal air supply and heating down air supply. The novel air duct machine of the invention can realize the overall front air outlet and return air, and the unit cooling and heating distributed air supply, which conforms to the human comfort experience, and has the advantages of beautiful appearance and strong practicability.

1. The unit of the present invention includes four air outlets, left and right air outlets and two air outlets below, and the air outlets have flanges installed with the engineering air outlets.

2. The unit of the present invention includes three return air outlets, a lower left air return air outlet, a middle air return air outlet and a lower right air return air outlet.

3. The air duct of the air outlet of the unit of the present invention contains a damper actuator for changing the air distribution.

4. The unit of the present invention can satisfy the cooling and heating of the left and right sides or the simultaneous cooling and heating of the left and right.

In some embodiments, the horizontal air outlet 4 includes a first horizontal air outlet 41 and a second horizontal air outlet 42, the first horizontal air outlet 41 is located at a horizontal side end of the casing 1, and the first horizontal air outlet 41 Two horizontal air outlets 42 are located at the other horizontal end of the casing 1;

The lower air outlet 5 includes a first lower air outlet 51 and a second lower air outlet 52, the first lower air outlet 51 is located on the horizontal side of the lower air return port 6, and the second lower air outlet 52 is located at the horizontal side of the lower air outlet 6. The other side of the level of the lower air return port 6 .

Through the side air outlet in two directions, the air outlet can be divided into different areas for cooling, and the downward air in two different positions can be used for heating in different areas. The hot zone discharges the air, thereby further improving the cooling comfort and heating comfort.

As shown in FIG. 1 , the air duct machine for distributed air supply of the present invention preferably includes four air outlets, a left air outlet, a lower left air outlet, a right air outlet and a lower right air outlet, and the air outlets have and Flange for installation of engineering tuyere.

In some embodiments, the blower 2 includes a first blower 21 and a second blower 22, the first blower 21 and the second blower 22 are arranged at intervals in a horizontal direction, and the first blower 21 is opposite to the The second fan 22 is disposed close to the first horizontal air outlet 41 and the first lower air outlet 51 , and the second fan 22 is close to the second horizontal air outlet 42 and the first fan 21 relative to the first fan 21 . The second lower air outlet 52 is provided so that the air flow can pass through the first fan 21 to be blown out from the first horizontal air outlet 41 or the first lower air outlet 51 , and the air flow can pass through the second fan 22 to blow out. The air is blown out from the second horizontal air outlet 42 or the second lower air outlet 52 . In the present invention, through the arrangement of the first fan and the second fan, the first fan can suck air from the lower air return port and blow it to the first horizontal air outlet or the first lower air outlet, and the second fan can suck air from the lower air return port and blow air to the first horizontal air outlet or the first lower air outlet. Blow to the second horizontal air outlet or the second lower air outlet to form horizontal air outlet on both sides, improve indoor cooling comfort, and form downward air outlet to two different positions to improve indoor heating comfort.

Preferably, the unit adopts a cross-flow fan blade as the structure of the fan, and along the airflow direction, the fan blade is on the downstream side of the airflow of the heat exchanger. As shown in Figure 2, the unit has two fan blades. In cooling mode, it can meet the requirements of left air outlet or right air outlet or left and right side air outlet simultaneously; in heating mode, it can meet the requirements of lower left air outlet or lower right air outlet. Or the lower left and lower right wind at the same time.

In some embodiments, a first air duct 71 and a second air duct 72 are further included, and the first fan 21 and the partial structure of the heat exchanger 3 are located in the first air duct 71, and the second air duct 71 Part of the structure of the fan 22 and the heat exchanger 3 is located in the second air duct 72, and the first air duct 71 is also provided with a first air valve 81, the first air valve 81 can be moved to open The first horizontal air outlet 41 closes the first lower air outlet 51 at the same time, and the first air valve 81 can also move to close the first horizontal air outlet 41 and simultaneously open the first lower air outlet 51, the second air duct 72 is also provided with a second air valve 82, the second air valve 82 can move to open the second horizontal air outlet 42 and close the second lower air outlet 52 at the same time, The second air valve 82 can also move to close the second horizontal air outlet 42 while opening the second lower air outlet 52 . In the present invention, through the arrangement of the two air ducts, the first fan and part of the heat exchanger can be effectively located in the first air duct, the second fan and part of the heat exchanger are located in the second air duct, and the first air duct is provided with The first air valve can effectively control the air outlet to switch the air outlet between the first horizontal air outlet and the first lower air outlet, and can switch the air outlet according to the different modes of the heating mode and the cooling mode to improve the control accuracy. and the comfort of indoor air outlet; the second air valve is set in the second air duct, which can effectively control the outlet air to switch between the second horizontal air outlet and the second lower air outlet, and can adjust according to the heating mode and cooling mode. It can switch the different modes to control the air outlet, improve the control accuracy and the comfort of indoor air outlet.

Preferably, there is an air valve actuator in the air duct of the air outlet of the unit to change the air outlet direction.

As shown in Figure 2-3, the damper actuator rotates at the position of the shaft, which can make the damper actuator run to points A and A' or B and B'.

Preferably, in the heating mode, the damper actuator rotates to points A and A', and the unit supplies air downward.

Preferably, in cooling mode. The damper actuator rotates to point B and point B', and the unit supplies air horizontally.

In some embodiments, the lower air return port 6 includes a first lower air return port 61 , a second lower air return port 62 and a third lower air return port 63 . The first lower air return port 61 and the second lower air return port 62 and the third lower air return port 63 are arranged in sequence in the horizontal direction, and the first lower air return port 61 is relatively close to the first lower air outlet 51, and the second lower air return port 62 is relatively close to the first lower air outlet 51. The second lower air outlet 52 and the third lower air return port 63 are located between the first lower air return port 61 and the second lower air return port 62 . The present invention also can effectively increase the return air area, increase the air intake volume, and improve the heat exchange capacity by including three lower air return ports.

Preferably, the unit includes three return air outlets, a lower left air return outlet, a lower middle air return air outlet and a lower right air return air outlet.

In some embodiments, when the first air duct 71 and the second air duct 72 are included,

The first air duct 71 is also provided with a first partition member 91, and the first partition member 91 is located between the first lower air outlet 51 and the first lower air return outlet 61 to separate the two. , the second air duct 72 is also provided with a second partition 92, the second partition 92 is located between the second lower air outlet 52 and the second lower air return separated. The present invention also can effectively separate the first lower air outlet and the first lower air return through the arrangement of the first partition and the second partition, and effectively prevent the outlet air from being sucked into the return air to form backflow and avoid Reduce the cooling or heating effect on the room.

In some embodiments, the heat exchanger 3 is disposed between the fan 2 and the lower air return port 6 , and the heat exchanger 3 includes a first heat exchange part 31 , a second heat exchange part 32 , a The third heat exchange part 33 and the fourth heat exchange part 34, the first heat exchange part 31 is connected to or adjacent to the second heat exchange part 32, and the two form a first bending structure, the third heat exchange part The heat portion 33 is in contact with or adjacent to the fourth heat exchange portion 34 and the two form a second bending structure, the second heat exchange portion 32 is in contact with or adjacent to the third heat exchange portion 33 and The two form a third bending structure. The first heat exchange portion 31 is opposite to the first lower air return port 61 to take in air from the first lower air return port 61 and exchange heat. The second heat exchange portion 32 is opposite to the part of the third lower air return port 63 to take in air from the third lower air return port 63 and exchange heat, and the third heat exchange part 33 is opposite to the part of the third lower air return port 63 to Air is taken in from the third lower air return port 63 and heat is exchanged, and the fourth heat exchange portion 34 is opposite to the second lower air return port 62 to take in air from the second lower air return port 62 and exchange heat. In the present invention, by setting the structure of four heat exchange parts, as far as possible, it is set as a bent structure, which can effectively increase the contact area with the air flow, improve the heat exchange capacity, and the multiple air return openings can be as much as possible. It is directly opposite to the heat exchange part, so as to increase the air intake, and at the same time, it can also increase the heat exchange area and improve the heat exchange effect.

The present invention further provides a distributed air supply device, which includes the distributed air supply duct machine 100 described in any one of the preceding items, and further includes a ceiling 10 , and the distributed air supply duct machine 100 is arranged on the ceiling 10 . Above, the suspended ceiling 10 is provided with a horizontal air outlet channel 101 and a lower air outlet channel 102. The horizontal air outlet channel 101 is opposite to the horizontal air outlet 4 and can communicate with each other. The lower air outlet 5 is opposite and can communicate with each other. In the present invention, through the setting of the suspended ceiling, the distributed air supply air duct machine can be arranged on the suspended ceiling, and the horizontal air outlet channel and the downward air outlet channel are arranged on the suspended ceiling, which can effectively form the horizontal direction air outlet and the downward air outlet, so that the In the cooling mode, horizontal air supply is performed to form a cooling shower-type air supply, which improves the cooling comfort. In the heating mode, the downward air outlet is performed to improve the heating comfort. It can form the air outlet in two directions, thereby effectively improving the wind The cooling comfort and heating comfort of the tube machine can solve the industry problem that the horizontal air supply cannot be cooled and the air is supplied under heating.

In some embodiments, when the horizontal air outlet 4 includes a first horizontal air outlet 41 and a second horizontal air outlet 42, and the lower air outlet 5 includes a first lower air outlet 51 and a second lower air outlet 52,

The horizontal air outlet channel 101 includes a first horizontal air outlet channel 101a and a second horizontal air outlet channel 101b. The first horizontal air outlet channel 101a is opposite to the first horizontal air outlet 41 and can communicate with each other. Two horizontal air outlet channels 101b are opposite to and communicate with the second horizontal air outlet 42; the lower air outlet channel 102 includes a first lower air outlet channel 102a and a second lower air outlet channel 102b, the first lower air outlet channel 102b. The air channel 102a is opposite to the first lower air outlet 51 and can communicate with each other, and the second lower air outlet channel 102b is opposite to the second lower air outlet 52 and can communicate with each other.

In the present invention, the arrangement of the first horizontal air outlet channel, the second horizontal air outlet channel, the first lower air outlet channel and the second lower air outlet channel can increase the air outlet range in the horizontal direction and increase the downward air outlet. The air range can be divided into zones for cooling different areas, two different positions of the lower air outlet, can be used for heating in different areas, and zoned air for cooling and heating in different areas, so as to further Improve cooling comfort and heating comfort.

In some embodiments, the lower end of the suspended ceiling 10 penetrates through a lower air return channel 103 , and the lower air return channel 103 is opposite to and communicated with the lower air return port 6 . In the present invention, through the lower return air channel provided on the ceiling, the air can be fed upward from the lower return air channel of the ceiling to the air duct machine, so as to form the effect of vertical upward air intake.

In some embodiments, the side wall of the suspended ceiling 10 is provided with a side air return channel 104 penetrating through, and the airflow can enter the interior of the suspended ceiling 10 through the side return air channel 104 and enter the Inside the case 1. In the present invention, through the side return air channel provided on the ceiling, the air can enter the lower part of the air duct machine from the side of the ceiling and enter the air upward from the lower air return port to the air duct machine, forming the effect of side air intake. In addition, the side return air channel on the suspended ceiling of the present invention does not interfere with the horizontal air outlet channel, and the side return air channel and the lower air outlet channel are also not connected. This embodiment of the present invention effectively avoids opening a hole under the suspended ceiling, and effectively improves its aesthetics.

The airtight connection between the lower air outlet and the suspended ceiling of the present invention is realized by a flexible material (such as canvas), and the intake air flow and the air outlet air flow are separated by the flexible material; the air intake air flow and the air outlet air flow will not be mixed together. .

The side return air channel is suitable for the situation where it is inconvenient to open the return air outlet under the ceiling, for example, the ceiling under the air duct machine has no space to open the return air outlet;

The lower return air channel is suitable for the situation where there is no space for the return air outlet on the ceiling where the side of the air duct machine is located. The location of the return air outlet can be selected according to the actual needs or user needs.

In some embodiments, the side return air passage 104 includes a first side return air passage 104a and a second side return air passage 104b, and the first side return air passage 104a is located on the horizontal side of the suspended ceiling 10, so The second side return air passage 104b is located on the other side of the level of the suspended ceiling 10, the first side return air passage 104a can communicate with the lower air return port 6, and the second side return air passage 104b can also communicate with the lower air return port 6. The lower air return port 6 communicates with each other. Through the arrangement of the first side return air channel and the second side return air channel, the invention can return air from different sides on the ceiling, increase the return air position, increase the return air volume, and improve the heat exchange capacity.

As shown in Figures 4, 5, 6, 10, 11, and 12, it is a schematic diagram of the airflow distribution of the unit using the ceiling return air.

Preferably, the unit returns the air through a part of the grille other than the air outlet, and the area of the grille installed in the project is larger than the area of the outlet air.

Preferably, a flexible material (such as canvas) is used to achieve airtight connection between the left and right air outlets and the lower left and right lower air outlets of the unit and the suspended ceiling.

Preferably, there is a certain gap between the lower air return port of the unit and the bottom of the unit to ensure the reliability of the lower air return port. The gap is greater than 15mm.

As shown in Figures 7, 8, 9, 13, 14, and 15, the unit adopts the schematic diagram of the airflow distribution of the lower return air.

Preferably, the unit returns the air through the grille below the return air outlet, and the area of the grille installed in the project is not less than the minimum area required by the lower left air return air outlet, the middle lower air return air outlet and the lower right air return air outlet.

Preferably, a flexible material (such as canvas) is used to achieve airtight connection between the left and right air outlets and the lower left and right lower air outlets of the unit and the suspended ceiling.

The above descriptions are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present invention shall be included in the protection of the present invention. within the range. The above are only the preferred embodiments of the present invention. It should be pointed out that for those skilled in the art, without departing from the technical principles of the present invention, several improvements and modifications can also be made. These improvements and modifications It should also be regarded as the protection scope of the present invention.

Claims (12)

1. The utility model provides a distributing type air supply tuber pipe machine which characterized in that: the method comprises the following steps:

a shell (1), a fan (2), a heat exchanger (3), a horizontal air outlet (4), a lower air outlet (5) and a lower air return inlet (6), the fan (2) and the heat exchanger (3) are both positioned in the shell (1), the horizontal air outlet (4) is positioned at the horizontal side end of the machine shell (1), so as to exhaust air from the horizontal direction, the lower air return inlet (6) is positioned at the lower end of the casing (1) so as to exhaust air from the lower part, the lower air return opening (6) can suck airflow into the machine shell (1), and passes through the heat exchanger (3) and the fan (2) and is blown out from the horizontal air outlet (4) or the lower air outlet (5), in the cooling mode, the air flow can be controlled to be blown out from the horizontal air outlet (4), and in the heating mode, the air flow can be controlled to be blown out from the lower air outlet (5).

2. A distributed feed air duct machine as recited in claim 1, wherein:

the horizontal air outlet (4) comprises a first horizontal air outlet (41) and a second horizontal air outlet (42), the first horizontal air outlet (41) is positioned at one horizontal side end of the machine shell (1), and the second horizontal air outlet (42) is positioned at the other horizontal side end of the machine shell (1);

the lower air outlet (5) comprises a first lower air outlet (51) and a second lower air outlet (52), the first lower air outlet (51) is located on one horizontal side of the lower air return inlet (6), and the second lower air outlet (52) is located on the other horizontal side of the lower air return inlet (6).

3. A distributed feed air duct machine as set forth in claim 2, wherein:

the fan (2) comprises a first fan (21) and a second fan (22), the first fan (21) and the second fan (22) are arranged at intervals along a horizontal direction, the first fan (21) is arranged close to the first horizontal air outlet (41) and the first lower air outlet (51) relative to the second fan (22), the second fan (22) is arranged close to the second horizontal air outlet (42) and the second lower air outlet (52) relative to the first fan (21), an air flow can be blown out from the first horizontal air outlet (41) or the first lower air outlet (51) through the first fan (21), and an air flow can be blown out from the second horizontal air outlet (42) or the second lower air outlet (52) through the second fan (22).

4. A distributed feed air duct machine as set forth in claim 3, wherein:

the air conditioner also comprises a first air duct (71) and a second air duct (72), the first fan (21) and part of the structure of the heat exchanger (3) are positioned in the first air duct (71), the second fan (22) and part of the structure of the heat exchanger (3) are positioned in the second air duct (72), a first air valve (81) is further arranged in the first air duct (71), the first air valve (81) can move to open the first horizontal air outlet (41) and simultaneously close the first lower air outlet (51), the first air valve (81) can also move to close the first horizontal air outlet (41) and simultaneously open the first lower air outlet (51), a second air valve (82) is further arranged in the second air duct (72), and the second air valve (82) can move to open the second horizontal air outlet (42) and simultaneously close the second lower air outlet (52), the second air flap (82) is also movable to close the second horizontal air outlet opening (42) while opening the second lower air outlet opening (52).

5. The distributed feed air duct machine of claim 3 or 4, wherein:

the lower air return opening (6) comprises a first lower air return opening (61), a second lower air return opening (62) and a third lower air return opening (63), the first lower air return opening (61), the second lower air return opening (62) and the third lower air return opening (63) are sequentially arranged in the horizontal direction, the first lower air return opening (61) is relatively close to the first lower air outlet (51), the second lower air return opening (62) is relatively close to the second lower air outlet (52), and the third lower air return opening (63) is located between the first lower air return opening (61) and the second lower air return opening (62).

6. A distributed feed air duct machine as set forth in claim 5, wherein:

when the first air duct (71) and the second air duct (72) are included,

the first air duct (71) is further provided with a first partition (91), the first partition (91) is located between the first lower air outlet (51) and the first lower air return inlet (61) to partition the first lower air outlet and the first lower air return inlet, the second air duct (72) is further provided with a second partition (92), and the second partition (92) is located between the second lower air outlet (52) and the second lower air return inlet (62) to partition the second lower air return inlet and the second lower air return inlet.

7. The distributed feed air duct machine of claim 5 or 6, wherein:

the heat exchanger (3) is arranged between the fan (2) and the lower air return opening (6), the heat exchanger (3) comprises a first heat exchanging part (31), a second heat exchanging part (32), a third heat exchanging part (33) and a fourth heat exchanging part (34), the first heat exchanging part (31) is connected with or adjacent to the second heat exchanging part (32) and forms a first bent structure, the third heat exchanging part (33) is connected with or adjacent to the fourth heat exchanging part (34) and forms a second bent structure, the second heat exchanging part (32) is connected with or adjacent to the third heat exchanging part (33) and forms a third bent structure, the first heat exchanging part (31) is opposite to the first lower air return opening (61) so as to intake air from the first lower air return opening (61) and exchange heat, and the second heat exchanging part (32) is opposite to the third lower air return opening (63) so as to exchange heat from the third lower air return opening (63), the third heat exchanging part (33) is opposite to the part of the third lower air return opening (63) to intake air from the third lower air return opening (63) and exchange heat, and the fourth heat exchanging part (34) is opposite to the second lower air return opening (62) to intake air from the second lower air return opening (62) and exchange heat.

8. A distributed air supply device is characterized in that: the distributed air supply duct machine (100) comprises the distributed air supply duct machine (100) as claimed in any one of claims 1 to 7, and further comprises a ceiling (10), wherein the distributed air supply duct machine (100) is arranged on the ceiling (10), a horizontal air outlet channel (101) and a lower air outlet channel (102) are arranged on the ceiling (10), the horizontal air outlet channel (101) is opposite to the horizontal air outlet (4) and can be communicated with the horizontal air outlet, and the lower air outlet channel (102) is opposite to the lower air outlet (5) and can be communicated with the horizontal air outlet.

9. The distributed air supply apparatus of claim 8, wherein:

when the horizontal outlet (4) comprises a first horizontal outlet (41) and a second horizontal outlet (42), and the lower outlet (5) comprises a first lower outlet (51) and a second lower outlet (52),

the horizontal air outlet channel (101) comprises a first horizontal air outlet channel (101a) and a second horizontal air outlet channel (101b), the first horizontal air outlet channel (101a) is opposite to the first horizontal air outlet (41) and can be communicated with the first horizontal air outlet, and the second horizontal air outlet channel (101b) is opposite to the second horizontal air outlet (42) and can be communicated with the second horizontal air outlet; the lower air outlet channel (102) comprises a first lower air outlet channel (102a) and a second lower air outlet channel (102b), the first lower air outlet channel (102a) is opposite to the first lower air outlet (51) and can be communicated, and the second lower air outlet channel (102b) is opposite to the second lower air outlet (52) and can be communicated.

10. The distributed air supply apparatus of claim 8, wherein:

the lower end of the suspended ceiling (10) penetrates through a lower air return channel (103) which is arranged, and the lower air return channel (103) is opposite to and communicated with the lower air return opening (6).

11. The distributed air supply apparatus of claim 8, wherein:

the side wall of the suspended ceiling (10) is provided with a side air return channel (104) in a penetrating mode, and air flow can enter the suspended ceiling (10) through the side air return channel (104) and enter the machine shell (1) through the lower air return opening (6).

12. The distributed air supply apparatus of claim 11, wherein:

the side return air channel (104) comprises a first side return air channel (104a) and a second side return air channel (104b), the first side return air channel (104a) is located on one horizontal side of the suspended ceiling (10), the second side return air channel (104b) is located on the other horizontal side of the suspended ceiling (10), the first side return air channel (104a) can be communicated with the lower return air inlet (6), and the second side return air channel (104b) can also be communicated with the lower return air inlet (6).

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