CN114060933A - Cabinet type air conditioner indoor unit - Google Patents

Abstract

The invention relates to a cabinet-type air conditioner indoor unit, which comprises: a casing, in which a through channel that penetrates the casing front and rear is formed, and a first heat exchange air duct and a second heat exchange air duct, and the first heat exchange air duct and A heat exchanger and a fan are arranged in the second heat exchange air duct; the jet air duct is arranged inside the through channel, and at least one air induction channel is defined between the air duct wall of the jet air duct and the side wall of the through channel, The jet air channel is arranged to be controlled or operable to move within the through channel to open and close at least one air induction channel and/or adjust the flow area of the at least one air induction channel; and a jet fan for controlled driving The air outside the indoor unit of the cabinet type air conditioner flows to the jet air duct and flows out through the jet air duct, so that the unheated natural air flowing out through the jet air duct is separated from the first heat exchange air duct and the second heat exchange air duct. The outgoing heat exchange air flow is mixed, so that the air supply is softer, the injected air volume is large, and the induced air volume is adjustable.

Description

Cabinet air conditioner indoor unit

technical field

The invention relates to the technical field of air conditioners, in particular to a cabinet-type air conditioner indoor unit.

Background technique

At present, the air outlets of most of the cabinet-type air conditioner indoor units on the market are bar-shaped air outlets extending in the vertical direction, so as to obtain a larger air supply range in the vertical direction. The applicant of the present application has designed an indoor unit of a double cross-flow air conditioner. Two sets of cross-flow fans are arranged in the casing. The two sides of the casing are respectively provided with air inlets corresponding to the two sets of cross-flow fans. The air outlet is formed at the top to improve the air supply efficiency. In addition, in order to achieve the comfort of air supply, an air inlet is formed at the rear of the casing and between the two air inlets, and a through-air passage is formed on the casing and/or inside the casing. One end is communicated with the air outlet, and the other end is communicated with the air outlet. When the air conditioner is running, the air from the air outlet can form a negative pressure in the through-air duct. Under the action of this negative pressure, the indoor non-heat-exchanged air can be introduced into the through-air duct through the air inlet, so that the non-heat-exchanged air can be separated from the air outlet at the air outlet. The heat exchange air is mixed and sent to the room to achieve the purpose of comfortable air supply.

However, the non-heat exchange air is passively introduced into the through-air duct under the action of the negative pressure generated by the outlet air, and the amount of induced air is relatively small, and the soft air supply effect in actual experience is not obvious. What's more serious is that no matter what mode the air conditioner is in, as long as the air is supplied, non-heat exchange air will be introduced, resulting in a single air supply mode of the air conditioner, which cannot meet the needs of users for rapid cooling or rapid heating.

SUMMARY OF THE INVENTION

One object of the present invention is to overcome at least one defect of the prior art, and to provide a cabinet-type air conditioner indoor unit capable of selectively active jet flow and selective passive drainage to meet various user needs.

A further object of the present invention is to avoid an excessively large volume of the cabinet-type air conditioner indoor unit.

Another further object of the present invention is to improve the air outlet uniformity of the cabinet-type air conditioner indoor unit in the vertical direction.

In order to achieve the above object, the present invention provides a cabinet-type air conditioner indoor unit, which includes:

A casing, the interior of the casing is formed with a through channel that runs through the casing front and rear, and a first heat exchange air duct and a second heat exchange air duct that are located on both lateral sides of the through channel and are independent of each other, so Both the first heat exchange air duct and the second heat exchange air duct have a heat exchange airflow outlet, and both the first heat exchange air duct and the second heat exchange air duct are provided with a heat exchanger and a fan, The heat exchange air flow in the first heat exchange air duct and the second heat exchange air duct is driven by the fan to be sent out through its own heat exchange air flow outlet;

The jet air duct is arranged inside the through channel independently of the first heat exchange air duct and the second heat exchange air duct, and the air duct wall of the jet air duct is connected to the air duct wall of the through channel. At least one air induction channel is defined between the side walls, and the jet air channel is arranged to be controlled or operable to move within the through channel to open and close the at least one air induction channel and/or adjust the the flow area of at least one induced draft channel; and

The jet fan is used to controllably drive the air outside the cabinet air conditioner indoor unit to flow to the jet air duct and flow out through the jet air duct, so that the unheated air flowing out through the jet air duct is The natural air is mixed with the heat exchange air flow sent out through the first heat exchange air duct and the second heat exchange air duct.

Optionally, the heat exchange airflow outlets of the first heat exchange air duct and the second heat exchange air duct are both facing the front side of the casing, and the front side of the jet air duct is provided with a jet air outlet; and

The two lateral air duct walls of the jet air duct are spaced apart from the two lateral side walls of the through-channel, respectively, so as to form one of the air induction passages on the two lateral outer sides of the jet air duct.

Optionally, the jet air channel is arranged at the rear section of the through channel, and the jet air channel is adapted to the shape of the rear section of the through channel, and the rear section of the through channel and the cross-section of the jet air duct tapers from back to front; and

The jet duct is arranged to be controlled or operable to move in a front-to-rear direction so as to move forward such that its two transverse duct walls abut the two side walls of the rear section of the through-channel respectively When connecting, the two air induction channels are closed, and the two air channels are opened when they are moved backwards so that there is a gap between the two lateral air channel walls and the two side walls of the rear section of the through channel respectively. Air channel.

Optionally, the cross section of the jet air duct is a trapezoid that tapers from back to front; and

When the two air induction channels are in a closed state, the rearward surface of the jet air channel is flush with the rearward surface of the casing.

Optionally, the jet fan is a centrifugal fan disposed below the jet air duct and communicated with the jet air duct, so as to controllably drive the air outside the cabinet air conditioner indoor unit to flow into the centrifugal fan horizontally. The fan flows into the jet air duct from bottom to top.

Optionally, the jet fan is fixedly disposed below the jet air duct, and the jet air duct is configured to controllably or operably move relative to the jet fan; or,

The jet fan is directly or indirectly fixedly connected to the jet air duct, and the jet air duct is controlled or operable to move together with the jet fan.

Optionally, the front side of the jet air duct is provided with a jet outlet; and

A vertically extending guide cavity is defined in the jet air duct, and two vertically extending arc guide plates are symmetrically arranged inside the jet air duct, and the two arc guide plates extend from the rear. It is protruded and bent forward toward the direction of approaching each other, so that the air guide cavity forms a tapered arc-shaped constriction portion adjacent to the front portion of the jet outlet.

Optionally, the guide cavity is provided with a plurality of guide fins located inside the jet outlet, and the multiple guide fins are arranged at intervals in the vertical direction; and

The length of the baffle in the front-rear direction is less than or equal to the depth of the arc-shaped baffle in the front-rear direction, so that the baffle is located in the arc-shaped constriction.

Optionally, a jet air outlet is opened on the front side of the jet air duct, a vertically extending guide cavity is defined in the jet air duct, and a plurality of air outlets located inside the jet air outlet are arranged in the air guide cavity. a plurality of guide fins, the plurality of guide fins are arranged at intervals in the vertical direction; and

The guide vane includes an arc-shaped section that is bent and extended from the bottom to the top and extends from the rear to the front, and a straight section that extends forward from the end of the arc-shaped section to the jet outlet.

Optionally, the through channel is formed in the middle of the casing, and the casing further has a first air inlet and a second air inlet opened on both lateral sides of the casing, the first air inlet and the The second air inlets communicate with the first heat exchange air duct and the second heat exchange air duct, respectively; and

The heat exchangers in the first heat exchange air duct and the second heat exchange air duct, and the fans in the first heat exchange air duct and the second heat exchange air duct are all related to the The vertical bisectors of the casing in the lateral direction are symmetrically arranged, and the fans in the first heat exchange air duct and the second heat exchange air duct are both cross-flow fans whose rotating shafts extend in the vertical direction.

The cabinet-type air conditioner indoor unit of the present invention is provided with movable jet air ducts in the through passages that penetrate through the casing at the front and rear, and at least one air induction passage is also defined between the jet air passage and the through passage, which can be selected by moving the jet air passages. Open and close the air channel or adjust the flow area of the air channel. When the natural air without heat exchange needs to be introduced, the movable jet air duct can open the air induction channel, and start the jet fan to actively inject external air into the jet air duct through the jet fan. The outside air enters the air channel under the action of negative pressure. The unheated natural air flowing out from the jet air duct and the air induction channel is mixed with the heat exchange air flowing out from the heat exchange air outlets of the two heat exchange air ducts to form a relatively soft mixed air, which avoids the need for cabinet air conditioners. The indoor unit is too cold or too hot, which improves its comfort experience. Compared with the method in the prior art that only uses negative pressure passive drainage, the present invention sets the active jet of the jet fan on the basis of passive drainage, the jet air volume and the induced air volume are greatly improved, the air supply distance is increased, and the indoor air conditioner of the cabinet is improved. The effect of soft air supply of the machine increases the overall air supply volume and expands its air supply range. At the same time, the flow area of the induced air channel can be adjusted by controlling the position of the jet air channel, and the total amount of natural air introduced can be adjusted in combination with the rotational speed of the jet fan. When rapid cooling or heating is required, the movable jet air duct closes the draft channel and does not start the jet fan. At this time, almost all the heat exchange air is sent out to meet the needs of rapid cooling or rapid heating.

Further, the jet fan of the present application is selected as a centrifugal fan, and it is placed below the jet air duct, so as to reduce the size of the assembly formed by the jet fan and the jet air duct in the lateral direction as much as possible, and increase its vertical direction. Therefore, the advantage of the higher height of the cabinet-type air conditioner indoor unit can be fully utilized to make the layout between the jet air duct, the jet fan and other structures of the cabinet-type air conditioner indoor unit more compact, so as to avoid the cross flow The installation of the type of jet fan in the jet air duct causes the size of the jet air duct in the horizontal direction to be too large, which leads to the problem that the volume of the cabinet-type air conditioner indoor unit is too large and the indoor space is too large.

Further, since the jet fan is arranged below the jet air duct, the airflow flows from the bottom to the top of the jet air duct, so how to achieve uniform air outlet in the vertical direction at the jet outlet is one of the design difficulties. For this reason, the present application is provided with a plurality of guide vanes arranged at vertical intervals in the arc-shaped closing portion, and the shape of the guide vanes is specially designed, so as to facilitate the passage of the arc-shaped closing portion and the guide vanes. The coordination of the air outlet makes the air outlet more uniform in the vertical direction.

The above and other objects, advantages and features of the present invention will be more apparent to those skilled in the art from the following detailed description of the specific embodiments of the present invention in conjunction with the accompanying drawings.

Description of drawings

Hereinafter, some specific embodiments of the present invention will be described in detail by way of example and not limitation with reference to the accompanying drawings. The same reference numbers in the figures designate the same or similar parts or parts. It will be understood by those skilled in the art that the drawings are not necessarily to scale. In the attached picture:

1 is a schematic structural diagram of a cabinet-type air conditioner indoor unit according to an embodiment of the present invention;

FIG. 2 is a schematic rear view of a cabinet-type air conditioner indoor unit according to an embodiment of the present invention;

3 is a schematic structural exploded view of a cabinet-type air conditioner indoor unit according to an embodiment of the present invention;

4 is a schematic cross-sectional view taken along a vertical cross-section extending in the front-rear direction of the cabinet-type air conditioner indoor unit according to an embodiment of the present invention;

5 and 6 are schematic cross-sectional views taken along a horizontal section of the cabinet-type air conditioner indoor unit in different states according to an embodiment of the present invention;

7 is a schematic structural cross-sectional view taken along a vertical cross-sectional plane extending in the front-rear direction of the jet air duct according to an embodiment of the present invention;

Figure 8 is a schematic enlarged view of part C in Figure 7;

9 is a schematic cross-sectional view of a jet air duct taken along a horizontal section according to an embodiment of the present invention.

Detailed ways

The present invention provides a cabinet-type air conditioner indoor unit. FIG. 1 is a schematic structural diagram of a cabinet-type air conditioner indoor unit according to an embodiment of the present invention, and FIG. 2 is a schematic diagram of a cabinet-type air conditioner indoor unit according to an embodiment of the present invention. Rear view, FIG. 3 is a schematic structural exploded view of a cabinet-type air conditioner indoor unit according to an embodiment of the present invention, and FIG. 4 is a vertical section taken along the front-rear direction of the cabinet-type air conditioner indoor unit according to an embodiment of the present invention FIG. 5 and FIG. 6 are schematic cross-sectional views taken along a horizontal section in different states of a cabinet-type air conditioner indoor unit according to an embodiment of the present invention.

Referring to FIGS. 1 to 6 , the cabinet-type air conditioner indoor unit 1 of the present invention includes a casing 40 . The interior of the casing 40 is formed with through-channels 41 penetrating the casing 40 front and rear, and are respectively located on both lateral sides of the through-channel 41 and are independent from each other. The first heat exchange air duct 42 and the second heat exchange air duct 43, the first heat exchange air duct 42 and the second heat exchange air duct 43 both have a heat exchange airflow outlet, and the first heat exchange air duct 42 and the second heat exchange air duct 43 The heat exchange air ducts 43 are provided with heat exchangers and fans, so that the heat exchange airflows in the first heat exchange air ducts 42 and the second heat exchange air ducts 43 are sent out through their own heat exchange airflow outlets through the fans. Specifically, two separate volute tongue assemblies 46 may be provided inside the casing 40 to define the first heat exchange air duct 42 and the second heat exchange air duct 43 which are independent of each other together with the casing 40 . The air paths of the first heat exchange air duct 42 and the second heat exchange air duct 43 are independent of each other, the first heat exchange air duct 42 has a first heat exchange airflow outlet 421 , and the first heat exchange air duct 42 is provided with a first heat exchange air outlet 421 . The heat exchanger 51 and the first fan 61, the first heat exchanger 51 is used for heat exchange with the air flow in the first heat exchange air duct 42, thereby generating the heat exchange air flow, and the first fan 61 is used to promote the heat exchange air flow It flows to the first heat exchange airflow outlet 421 and flows out through the first heat exchange airflow outlet 421 . Likewise, the second heat exchange air duct 43 has a second heat exchange air flow outlet 431, and a second heat exchanger 52 and a second fan 62 are provided therein. The second heat exchanger 52 is used for exchanging heat with the air flow in the second heat exchange air duct 43 to generate heat exchange air flow, and the second fan 62 is used to promote the heat exchange air flow to flow to the second heat exchange air flow outlet 431 , and It flows out through the second heat exchange airflow outlet 431 .

In particular, the cabinet-type air conditioner indoor unit 1 further includes a jet air duct 10 and a jet fan 20 .

The jet air duct 10 and the first heat exchange air duct 42 and the second heat exchange air duct 43 are provided inside the through passage 41 independently of each other. That is to say, the jet air duct 10 is arranged inside the through passage 41 and is independent from the first heat exchange air duct 42 and the second heat exchange air duct 43 , and the air passages of the three air ducts are independent of each other and do not affect each other. In addition, at least one air induction channel 44 is defined between the air channel wall of the jet air channel 10 and the side wall of the through channel 41. When the fans in the first heat exchange air channel 42 and the second heat exchange air channel 43 are running, and /or when the jet fan 20 is running, a certain negative pressure will be generated at the front of the air induction channel 44 . Under the action of the negative pressure, the air in the space where the cabinet-type air conditioner indoor unit 1 is located flows into the air-inducing channel 44 and is sent out through the front opening of the air-inducing channel 44 , and the air flowing out through the jet air channel 10 without heat exchange is sent out. The natural air and the heat exchange air flow sent out through the first heat exchange air duct 42 and the second heat exchange air duct 43 are mixed. As a result, the amount of unheated natural air introduced into the cabinet-type air conditioner indoor unit 1 is increased, and the overall air supply volume thereof is increased.

Further, the jet air channel 10 is configured to be controlled or operable to move within the through channel 41 to open and close at least one air induction channel 44 and/or adjust the flow area of the at least one air induction channel 44 . The state shown in FIG. 5 is the state in which the air induction channel 44 is opened, and the state shown in FIG. 6 is the state in which the air induction channel 44 is closed. That is to say, by moving the jet air duct 10, the distance between the air duct wall of the jet air duct 10 and the side wall of the through passage 41 can be adjusted, thereby opening and closing the air induction passage 44 or adjusting the size of the air induction passage 44, saving The mechanism for specifically controlling the opening and closing of the air-inducing channel 44 or adjusting the size of the air-inducing channel 44 is eliminated, which simplifies the structure of the cabinet-type air conditioner indoor unit 1 .

The jet fan 20 is used to controllably drive the air outside the cabinet-type air conditioner indoor unit 1 to flow to the jet air duct 10 and flow out through the jet air duct 10, so that the unheated natural air flowing out through the jet air duct 10 and the The heat exchange air flow sent from the first heat exchange air duct 42 and the second heat exchange air duct 43 is mixed.

When the natural air without heat exchange needs to be introduced, the movable jet air duct 20 opens the air induction channel 44, and starts the jet fan 20, through which the jet fan 20 actively injects natural air into the jet air duct 10, and at the same time, also Part of the outside air without heat exchange enters the air induction channel 44 under the action of negative pressure. The unheated natural air flowing out from the jet air duct 10 and the air duct 44 is mixed with the heat exchange air flow flowing out from the heat exchange air flow outlets of the two heat exchange air ducts to form a relatively soft mixed air, which avoids the need for cabinets. The air outlet from the indoor unit 1 of the type air conditioner is too cold or too hot, which improves its comfort experience. Compared with the negative pressure passive drainage method in the prior art, the present invention increases the active jet flow of the jet fan 20 on the basis of passive drainage, the jet air volume and the induced air volume are greatly improved, the air supply distance is increased, and the indoor air conditioner of the cabinet type is improved. The effect of soft air supply of the machine 1 increases its overall air supply volume and expands its air supply range. At the same time, the flow area of the air induction channel 44 can be adjusted by controlling the position of the jet air channel 10 , and the total amount of introduced natural air can be precisely controlled in combination with the rotational speed of the jet fan 20 . When the amount of natural air to be introduced is not much, the movable jet air duct 10 closes the air induction duct 44 and only starts the jet fan 20 . When rapid cooling or heating is required, the movable jet air duct 10 closes the draft duct 44 and does not start the jet fan 20. At this time, almost all the heat exchange air is sent out to meet the needs of rapid cooling or rapid heating.

In some embodiments, the heat exchange airflow outlets of the first heat exchange air duct 42 and the second heat exchange air duct 43 both face the front side of the casing 40 , and the jet air duct 10 is provided with a jet air outlet 12 on the front side. That is to say, all the three air ducts supply air toward the front side of the casing 40 , so that the heat exchange air flowing from the two heat exchange air ducts and the unheated natural air flowing out from the jet air duct 10 are separated from each other. The front side or front of the cabinet 40 is mixed. In addition, by disposing the jet air duct 10 in the through passage 41 between the two heat exchange air ducts, the jet air duct 10 can be placed between the two heat exchange air ducts, so that the natural air sent by the jet air duct 10 It is located between the two heat exchange airflows, thereby making the mixing between the natural air and the heat exchange airflow more uniform. It should be noted that the front side of the casing 40 referred to in the present invention may include the front side of the casing 40 or the oblique front side of the casing 40, as long as the direction of the heat exchange airflow outlet has a forward direction component What is necessary is just to be able to blow air toward the front side of the cabinet 40 .

Further, the two lateral air duct walls 10f of the jet air duct 10 are spaced apart from the two lateral side walls 41a of the penetrating passage 41, respectively, so as to form an air induction channel 44 on the two lateral outer sides of the jet air duct 10, so as to Introduce natural air from both lateral sides at the same time, so that the natural air and the heat exchange airflow can be mixed more evenly. Those skilled in the art should understand that the natural air referred to in the present invention means air without heat exchange.

In some embodiments, the jet air channel 10 is disposed on the rear section 411 of the through channel 41 , and the jet air channel 10 is adapted to the shape of the rear section 411 of the through channel, so that the jet air channel 10 and the through channel The structural layout between 41 is more compact to reduce the volume of the cabinet-type air conditioner indoor unit 1 . The rear section 411 of the through-channel 41 and the cross-section of the jet air duct 10 are tapered from the back to the front, so as to form the guide cavity 11 tapered from the back to the front in the jet air duct 10, so that the natural air Flows forward quickly.

Further, the jet air duct 10 is configured to be controlled or operable to move in the front-rear direction so as to move forward so that its two lateral air duct walls 10f are connected to the two sides of the rear section 411 of the through-passage, respectively. When the walls 41a abut against each other, the two air ducts 44 are closed, and when they are moved backwards so that there is a gap between the two lateral air duct walls 10f and the two side walls 41a of the rear section 411 of the through-passage respectively, the two air ducts are opened. A draft channel 44 . Since the rear section 411 of the through channel 41 and the jet air channel 10 are both tapered from the rear to the front, as the jet air channel 10 moves backwards, the two transverse air channel walls 10f and the rear part of the through channel The distance between the two side walls 41a of the section 411 is larger and larger, that is, the flow area of the air induction channel 44 is larger and larger. On the contrary, as the jet air duct 10 moves forward, the distance between the two lateral air duct walls 10f and the two side walls 41a of the rear section 411 of the passage becomes smaller and smaller, that is, the distance of the air duct 44 becomes smaller and smaller. The flow area is getting smaller and smaller. When the jet air duct 10 moves forward to a predetermined position, its two transverse air duct walls 10f abut against the two side walls 41a of the rear section 411 of the through-passage, and the air-inducing duct 44 is completely closed. In this way, the size of the flow area of the two air induction channels 44 can be adjusted by moving the jet air channel 10 back and forth, so as to adjust the amount of natural air introduced by the air induction channels 44 .

In some embodiments, the cross section of the jet air duct 10 is a trapezoid that tapers from the back to the front. When the two air induction passages 44 are in the closed state, that is, when the two lateral air passage walls 10f of the jet air passage 10 are in abutment with the two side walls 41a of the rear section 411 of the through passage, the rearward direction of the jet air passage 10 The surface 10e is flush with the rearward facing surface of the cabinet 40 . When the cabinet-type air conditioner indoor unit 1 is in a shutdown state, the air induction channel 44 can be controlled to be in a closed state, so as to prevent dust and sundries from entering the casing 40 . As a result, the completeness and aesthetics of the appearance of the cabinet-type air conditioner indoor unit 1 can be improved. Further, the cross section of the jet air duct 10 may be an isosceles trapezoid.

In some embodiments, the casing 40 is further provided with a first air inlet 451 and a second air inlet 452, and the first heat exchange air duct 42 and the second heat exchange air duct 43 are respectively connected with the first air inlet 451 and the second air inlet 451. The air inlets 452 are connected, so that the air outside the cabinet-type air conditioner indoor unit 1 flows into the first heat exchange air duct 42 through the first air inlet 451 by the first fan 61, and the air outside the cabinet-type air conditioner indoor unit 1 is caused by the second fan 62. The air flows into the second heat exchange air duct 43 through the second air inlet 452 .

Further, the through channel 41 can be formed in the middle of the casing 40, and the first air inlet 451 and the second air inlet 452 can be located on the lateral sides of the casing 40, respectively, so as to avoid the first heat exchange duct 42 and the second heat exchange. The air intake of the hot air duct 43 is disturbed. The heat exchangers in the first heat exchange air duct 42 and the second heat exchange air duct 43 , and the fans in the first heat exchange air duct 42 and the second heat exchange air duct 43 are all vertical relative to the casing 40 in the lateral direction. The straight bisecting plane m is arranged symmetrically, that is, the first heat exchanger 51 and the second heat exchanger 52 are arranged symmetrically on the left and right, and the first fan 61 and the second blower 62 are arranged symmetrically on the left and right. The two air induction channels 44 may also be symmetrically arranged with respect to the vertical bisector m of the casing 40 in the lateral direction.

In some embodiments, the fans in the first heat exchange air channel 42 and the second heat exchange air channel 43 are both cross-flow fans whose rotating shafts extend in the vertical direction. That is, the first fan 61 and the second fan 62 are both vertically extending cross-flow fans. Accordingly, the first air inlet 451, the second air inlet 452, the first heat exchange airflow outlet 421, the second heat exchange The air outlet 431 , the jet outlet 12 and the air supply port 453 are all elongated tuyere extending vertically. The jet air duct 10 is an elongated air duct extending vertically. Thereby, the air outlet height of the cabinet-type air conditioner indoor unit 1 in the vertical direction can be increased, and the air supply range thereof can be expanded. The first heat exchanger 51 and the second heat exchanger 52 are V-shaped or arc-shaped heat exchangers arranged on the lateral outer side of the first fan 61 and the second fan 62, respectively.

In some embodiments, the jet fan 20 is a centrifugal fan disposed below the jet air duct 10 and communicated with the jet air duct 10, so as to controllably drive the air outside the cabinet-type air conditioner indoor unit 1 to flow into the centrifugal fan horizontally, and be driven by the centrifugal fan. It flows into the jet air duct 10 from bottom to top.

The jet fan 20 of the present application is selected as a centrifugal fan, and it is located below the jet air duct 10, so as to reduce the size of the assembly formed by the jet fan 20 and the jet air duct 10 in the lateral direction as much as possible, and increase its vertical dimension. Therefore, the advantage of the higher height direction of the cabinet-type air conditioner indoor unit 1 can be fully utilized, so that the layout between the structures such as the jet air duct 10, the jet fan 20 and the cabinet 40 of the cabinet-type air conditioner indoor unit It is more compact, avoiding the use of cross-flow jet fans, and setting them in the jet air ducts will cause the size of the jet air ducts in the horizontal direction to be too large, which will result in the cabinet-type air conditioner indoor unit being too large and occupying too much indoor space. question.

In some embodiments, the jet blower 20 is fixedly disposed below the jet duct 10 , and the jet duct 10 is configured to controllably or operably move relative to the jet blower 20 . That is, the jet fan 20 is stationary, and the jet air duct 10 can move relative to the jet fan 20 . At this time, the jet air duct 10 and the jet fan 20 can be connected by a hose that can produce recoverable elastic deformation. The arrangement of the hose can not only allow the relative displacement between the jet air duct 10 and the jet fan 20, but also ensure The fluid communication relationship between the jet air duct 10 and the jet fan 20 is well sealed. In these embodiments, the cabinet-type air conditioner indoor unit 1 further includes a driving device for driving the jet air duct 10 to move, and the driving device can be any existing feasible driving device, which will not be repeated here.

In other embodiments, the jet fan 20 is directly or indirectly fixedly connected to the jet air duct 10 , and the jet air duct 10 is controlled or operable to move together with the jet fan 20 . That is to say, the jet fan 20 and the jet air duct 10 cannot produce relative displacement, but they can move together. In this way, there is no special requirement for the connection between the jet air duct 10 and the jet fan 20, as long as a fluid communication relationship with good sealing performance can be ensured. In these embodiments, the cabinet-type air conditioner indoor unit 1 further includes a driving device for driving the jet air duct 10 and the jet fan 20 to move synchronously, and the driving device may be any existing feasible driving device, which will not be repeated here.

The air supply port 453 of the cabinet-type air conditioner indoor unit is usually a bar-shaped air supply port extending vertically. 10 The jet air outlets 12 on the front side are all bar-shaped air outlets extending vertically, so as to increase the air outlet height of the cabinet-type air conditioner indoor unit 1 in the vertical direction and expand its air supply range.

However, the jet fan 20 is located below the jet air duct 10, and the air flow flows into the air outlet duct 20 from bottom to top, which is perpendicular to the air outlet direction of the jet air outlet 12. Therefore, how to ensure that the jet air outlet 12 sends out a higher flow rate of air , and how to achieve uniform air discharge from the jet air outlet 12 in the vertical direction are the design difficulties and design priorities of further embodiments of the present application.

7 is a schematic structural cross-sectional view of a jet air duct extending along the front-rear direction according to an embodiment of the present invention, FIG. 8 is a schematic enlarged view of part C in FIG. 7 , and FIG. 9 is a schematic view of the present invention A schematic cross-sectional view of the jet air duct of the embodiment taken along the horizontal section. Referring to FIGS. 7 to 9 , in some embodiments, a vertically extending guide cavity 11 is defined in the jet air duct 10 , and the airflow entering the jet air duct 10 is guided through the guide cavity 11 from the jet air duct 10 . The jet flows out of the tuyere 12. The interior of the jet air duct 10 is symmetrically provided with two vertically extending arc-shaped baffles 13, and the two arc-shaped baffles 13 protrude and bend toward each other from the back to the front, so that the guide cavity is A tapered arc-shaped closing portion 111 is formed adjacent to the front portion of the strip-shaped jet outlet 12 . That is to say, the arc-shaped closing portion 111 is tapered from the back to the front, and is roughly in the shape of a funnel from the back to the front. The tapered arc-shaped constriction formed by the deflector of this shape can reduce the airflow resistance as much as possible and increase the airflow velocity to the jet outlet 12, thereby increasing the air outlet speed of the jet device 1 and prolonging its air supply. distance.

In some embodiments, the cross section of the jet air duct 10 is a trapezoid, the upper bottom of the trapezoid is located on the front side where the bar-shaped jet outlet 12 is located, and the lower bottom of the trapezoid is located at the back side away from the bar-shaped jet outlet 12 . The rear ends of the two arc-shaped deflectors 13 are respectively bent and extended forward by the two side plates of the jet air duct 10 corresponding to the two waists of the trapezoid. Specifically, the jet air duct 10 has a front side plate 10a, a rear side plate 10b and two lateral side plates 10c. The outer surface of the rear side plate 10b forms the rearward surface 10e of the jet air duct 10 , and the outer surface of the lateral side plate 10c forms the transverse air duct wall 10f of the jet air duct 10 . The jet outlet 12 is opened on the front side plate 10a, the cross-section of the front side plate 10a is a trapezoidal upper bottom, the cross-section of the rear side plate 10b is a trapezoidal lower bottom, and the cross-sections of the two lateral side plates 10c are trapezoidal. Two waists. The two arc-shaped baffles 13 are respectively bent and extended forward from the inner surfaces of the two lateral side plates 10c. That is to say, the rear ends of the two arc-shaped deflectors 13 do not extend to the rearmost side of the jet air duct 10 . The guide cavity 11 thus formed includes two parts: the arc-shaped closing part 111 at the front and the trapezoidal cavity 112 at the rear part. line shown.

The trapezoidal cavity 112 not only has a shape that is tapered from the back to the front so that the airflow can be accelerated to flow to the arc-shaped closing portion 111 , but also the rear side of the trapezoidal cavity 112 has a larger area for the air entering the jet air duct 10 . The airflow flows from bottom to top through the rear side of the trapezoidal cavity 112 , which reduces the flow resistance of the airflow and facilitates the formation of a relatively uniform air supply at the jet outlet 12 .

In some embodiments, the arc-shaped closing portion 111 extends forward to the strip-shaped jet outlet 12 , and the dimension of the frontmost end of the arc-shaped closing portion 111 in the lateral direction is consistent with the lateral dimension of the jet outlet 12 . That is to say, the foremost end of the arc-shaped closing portion 111 is seamlessly connected to the jet outlet 12 , so that turbulent flow phenomenon near the jet outlet 12 can be avoided.

In some embodiments, the cross section of the guide cavity 11 is tapered in the direction from the rear to the front. Specifically, the cross section of the guide cavity 11 may be in a regular tapered shape or an irregular tapered shape in the front-rear direction. For example, the guide cavity 11 shown in FIG. 9 has a trapezoidal cavity 112 and an arc-shaped closing portion 111 arranged from the rear to the front, and both the trapezoidal cavity 112 and the arc-shaped closing portion 111 are tapered from the rear to the front. The guide cavity 11 thus formed has an irregular tapered shape from back to front.

Further, the width W ₄ of the rearmost end of the guide cavity 11 in the transverse direction is 5-10 times the width W ₆ of the jet outlet 12 in the transverse direction. Since the diversion cavity 11 is tapered from the back to the front, the arc-shaped closing portion 111 is seamlessly connected to the jet outlet 12 , so the width of the rearmost end of the diversion cavity 11 is its maximum width, and the width of the jet outlet 12 is the width of the jet outlet 11 . minimum width. That is, the maximum width of the guide cavity 11 is 5 to 10 times the minimum width thereof. For example, the maximum width of the guide cavity 11 may be 5 times, 6 times, 7 times, 8 times, 9 times or 10 times of its minimum width. Therefore, on the one hand, it can ensure that the rear of the guide cavity 11 has an area that can allow most of the airflow entering the jet air duct 10 to flow upward; The vertically extending slit-shaped jets flow out of the air outlet 12 so that the airflow can be accelerated sufficiently when it flows from the rear to the front, so as to obtain a larger air outlet speed and air supply distance. More importantly, the jet air outlet 12 can be made to discharge air uniformly in the vertical direction. The above-mentioned proportional design of the maximum width and the minimum width of the guide cavity 11 is the result obtained after balancing various technical problems, and achieves better technical effects in all the above-mentioned aspects. On the contrary, if the width of the rearmost end of the guide cavity 11 is too large compared to the width of the jet outlet 12, the area of the rear of the guide cavity 11 will be too large, and the air flow through the rear of the guide cavity 11 will be separated from the jet outlet 12. The distance is relatively long, and most of the air flow will directly flow upward through the rear of the diversion cavity 11, and the air flow to the jet outlet 12 is very small, which leads to a large air outlet at the top of the jet outlet 12 and a jet outlet. The air volume at the bottom and the middle of the 12 is very small, and the air output from the jet outlet 12 is very unbalanced. If the width of the rearmost end of the guide cavity 11 and the width of the jet outlet 12 are smaller, the difference in width between the two is small, and the acceleration effect obtained when the airflow flows from the back to the front is not obvious, and the air outlet from the jet outlet 12 The speed and air supply distance are relatively small.

In some embodiments, the cross section of the guide cavity 11 is tapered in the direction from the rear to the front. The ratio between the width W ₄ of the rearmost end of the guide cavity 11 in the transverse direction and the depth H ₄ of the guide cavity 11 in the front-rear direction is any ratio in the range of 2:11˜2:9. For example, the ratio between width W ₄ and depth H ₄ may be 2:11, 2:10, or 2:9. Therefore, a reasonable proportional relationship can be maintained between the air flow rate allowed to pass through the rear of the guide cavity 11 and the air flow rate that can obtain better acceleration backward and forward in the guide cavity 11, avoiding the width W ₄ and the depth H The ratio between ₄ and 4 is too small, resulting in insufficient acceleration of the air flow to the jet outlet 12 or the ratio between the width W ₄ and the depth H ₄ is too large, resulting in a large air flow to the bottom of the jet outlet 12, and the air flow at the bottom of the jet outlet 12. Small traffic problem.

In some embodiments, the ratio between the length H ₅ of the arc baffle 13 in the front-rear direction and the depth H ₄ of the guide cavity 11 in the front-rear direction is in the range of 4:11˜7:11 any ratio. It can be understood that the length H ₅ of the arc-shaped baffle 13 in the front-rear direction is the vertical distance between the front and rear ends of the arc-shaped baffle 13 in the front-rear direction. For example, the ratio between length _H5 and depth H4 may be _4:11 , 5:11, 6:11 or 7:11. Therefore, on the one hand, it can ensure that the rear part of the guide cavity 11 has an area that can make most of the airflow entering the jet air duct 10 flow upward; It is better to accelerate the part of the airflow flowing from the bottom to the top to obtain a larger air outlet speed. On the contrary, if the ratio between the length H ₅ and the depth H ₄ is too small, the acceleration effect of the arc-shaped closing portion 111 on the airflow is not obvious, and the air outlet velocity of the jet out of the tuyere 12 is small. If the ratio between the length H ₅ and the depth H ₄ is too large, most of the airflow in the guide cavity 11 will be accelerated and sent out from the bottom of the jet outlet 12 under the action of the arc-shaped closing portion 111 , resulting in the jet outlet 12 The phenomenon of uneven air supply with large air volume at the bottom and small air volume at the top.

In some embodiments, the guide cavity 11 is provided with a plurality of guide fins 14 that are located inside the jet outlet 12 and extend in the front-rear direction. The guide fins 14 are arranged at intervals in the vertical direction for guiding the guide The airflow in the flow chamber 11 flows toward the jet outlet 12 .

Further, the length W ₁ of the deflector 14 in the front-rear direction is less than or equal to the length H ₅ of the arc deflector 13 in the front-rear direction, so that the deflector 14 is located in the arc-shaped constriction 111 . That is to say, in the present application, a plurality of guide fins 14 are arranged in the arc-shaped closing portion 111 and arranged at intervals along the vertical direction, so that the jets can flow out of the tuyere 12 through the cooperation of the arc-shaped closing portion 111 and the guide fins 14 . The airflow in the vertical direction is more uniform. The deflector 14 is located in the arc-shaped closing portion 111, which can avoid guiding the airflow flowing in the rear space of the guide cavity 11 in the front and rear directions, so as to facilitate the airflow entering the jet air duct 10 from bottom to top. flow, so as to facilitate the uniform air outlet in the vertical direction at the jet outlet 12 .

In some embodiments, the guide cavity 11 is provided with a plurality of guide fins 14 that are located inside the jet outlet 12 and extend in the front-rear direction. The guide fins 14 are arranged at intervals in the vertical direction for guiding the guide The airflow in the flow chamber 11 flows toward the jet outlet 12 . Further, the strip-shaped jet outlet 12 is located at the front side of the jet air duct 10 , and the deflector 14 may include an arc-shaped section 141 that is bent from bottom to top and extends from the rear to the front. The straight section 142 extending forward to the bar-shaped jet outlet tuyere 12 . Therefore, a preset amount of airflow in the airflow flowing from bottom to top can be retained inside the arc-shaped section 141 with the special shape, and the flow of the part of the airflow after encountering the arc-shaped section 141 can be reduced as much as possible On the premise of resistance, it is guided to the straight section 142, and the predetermined amount of airflow is guided to the jet outlet 12 through the straight section 142, so as to further improve the jet outlet through the cooperation of the plurality of deflectors 14. 12 Air outlet uniformity in the vertical direction.

Further, in the present application, a straight section 142 is specially designed at the front portion of the deflector 14 adjacent to the jet outlet 12, and the straight section 142 can guide the airflow to be horizontally sent out through the jet outlet 12, thereby making the jet flow The airflow sent by the device 1 is consistent with the airflow direction sent from the heat exchange airflow outlet of the cabinet air conditioner indoor unit, so that the overall air supply speed of the cabinet air conditioner indoor unit is faster on the premise of ensuring a better mixing effect of the two airflows. High, the overall air supply distance is long.

In some embodiments, the length W ₃ of the arcuate section 141 in the front-rear direction is greater than or equal to the length W ₂ of the straight section 142 in the front-rear direction. Therefore, on the one hand, the arc-shaped section 141 can be made to have a relatively long length in the front-rear direction, so as to increase the length of the guide path of the arc-shaped section 141 to the airflow and reduce the curvature of the arc-shaped section 141, Therefore, the flow resistance after the airflow encounters the arc-shaped section 141 is reduced as much as possible. On the other hand, on the basis of ensuring the normal flow guiding function of the straight section 142, the length of the straight section 142 in the front-rear direction is made shorter, so as to reduce the length of the entire guide vane 14 in the front-rear direction, so that The size of the jet device 1 in the front-rear direction is reduced, making it more suitable for a cabinet-type air conditioner indoor unit with compact structure and high volume requirements.

In some embodiments, the lengths of the straight sections 142 of each guide vane 14 in the front-rear direction are the same, and the lengths of the arc-shaped sections 141 of each guide vane 14 in the front-rear direction are the same. That is to say, the size of each guide vane 14 is the same, so as to facilitate mold opening and save costs. The applicant has verified through in-depth analysis and a large number of simulations, experiments, etc.: as long as the size of the guide cavity 11, the arc guide plate 13 and/or the guide vane 14 is designed according to the solution in the above embodiment, and the jet fan 20 By continuously supplying air toward the jet air duct 10, even if the size of each deflector 14 is the same, uniform air outlet from the jet air outlet 12 in the vertical direction can be achieved.

In other embodiments, the lengths of the straight sections 142 of each guide vane 14 in the front-rear direction are equal, and the arc-shaped sections 141 of the plurality of guide vanes 14 arranged in sequence from bottom to top are in the front-rear direction The length increases sequentially. In this way, the problem that the guide fins 14 located at the bottom are protruded too long to the rear, resulting in too much air flow remaining on the inner side of the guide fins 14 and thus less air flow at the top of the guide cavity 11, can be avoided. At the same time, multiple guide plates can also be avoided. The equal length of the arc segments 141 of the flow vanes 14 may cause a problem that the air flow guided by the upper guide vanes 14 is less, so as to ensure uniform air discharge from the jet outlet 12 in the vertical direction.

Further, the rear ends of the plurality of guide vanes 14 are located on an inclined straight line. That is to say, the arc sections 141 of the plurality of guide vanes 14 arranged in sequence from bottom to top are sequentially extended at equal intervals, which further ensures uniform air discharge from the jet outlet 12 in the vertical direction.

In some embodiments, the bottom of the jet duct 10 and the top of the jet fan 20 are in fluid communication through the volute duct 30 . The air inlet of the jet air duct 10 is opened at its bottom, and the air outlet of the jet fan 20 is at its top. The jet fan 20 sends out airflow and guides it to the jet air duct 10 . Under normal circumstances, in order to obtain a better air supply range, the air supply port 453 and the two heat exchange airflow outlets of the cabinet-type air conditioner indoor unit will not be adjacent to the ground, but have a certain height. In order to prevent the jet air outlet 12 of the jet air duct 10 from being too low, a volute air duct 30 is arranged between the bottom of the jet air duct 10 and the top of the jet fan 20, so that the jet air duct 10 can be better connected to the cabinet-type air-conditioning room. The structures of the casing 40, the through-channel 41 and the two heat exchange air ducts of the machine 1 are matched.

Specifically, the volute air duct 30 extends vertically. When only the jet air duct 10 is movable, the volute air duct 30 can be a soft air duct so as to be able to generate a certain amount of elastic deformation. When the jet air duct 10 moves synchronously with the jet fan 20 , the volute air duct 30 can be a rigid air duct and moves synchronously with the jet air duct 10 and the jet fan 20 .

Further, the height of the volute air duct 30 in the vertical direction is set so that the jet air outlet 12 of the jet air duct 10 is the same height as the heat exchange airflow outlet of the first heat exchange air duct and the second heat exchange air duct, In order to facilitate better mixing of the air flow sent out from the jet outlet 12 and the heat exchange air flow flowing out from the heat exchange air flow outlet.

In some embodiments, the through channel 41 penetrates through the upper part of the casing 40 in the front-rear direction, that is, the through channel 41 is only formed in the middle part of the upper part of the casing 40 . Both the jet fan 20 and the volute air duct 30 are arranged in the lower part of the casing 40 to prevent the jet fan 20 and the volute air duct 30 from being exposed and affecting the appearance of the cabinet-type air conditioner indoor unit 1 .

Further, the air inlet of the jet fan 20 faces the rear side of the casing 40, and the rear wall of the casing 40 is provided with a jet air inlet grill 47 opposite to the air inlet of the jet fan 20, so that the outside of the cabinet-type air conditioner indoor unit 1 is provided. The air enters the jet fan 20 of the casing 40 through the jet inlet grill 47 . A damper may be provided at the intake grill 47 to controllably open and/or close the airflow inlet of the jet fan 20 .

Those skilled in the art should also understand that the terms “upper”, “lower”, “front”, “rear” and the like used to indicate the orientation or positional relationship in the embodiments of the present invention are those of the cabinet-type air conditioner indoor unit 1 Based on the actual state of use, these terms are only for the convenience of describing and understanding the technical solutions of the present invention, rather than indicating or implying that the referred device must have a specific orientation, be constructed and operated in a specific orientation, and therefore It should not be construed as a limitation of the present invention.

By now, those skilled in the art will recognize that, although various exemplary embodiments of the present invention have been illustrated and described in detail herein, the present invention may still be implemented in accordance with the present disclosure without departing from the spirit and scope of the present invention. The content directly determines or derives many other variations or modifications consistent with the principles of the invention. Accordingly, the scope of the present invention should be understood and deemed to cover all such other variations or modifications.

Claims (10)

1. A cabinet air-conditioning indoor unit, comprising:

the heat exchanger comprises a machine shell, wherein a through channel which penetrates through the machine shell from front to back and a first heat exchange air channel and a second heat exchange air channel which are respectively positioned at two transverse sides of the through channel and are independent of each other are formed in the machine shell, the first heat exchange air channel and the second heat exchange air channel are both provided with heat exchange air flow outlets, and heat exchangers and fans are arranged in the first heat exchange air channel and the second heat exchange air channel so as to enable heat exchange air flows in the first heat exchange air channel and the second heat exchange air channel to be sent out through the heat exchange air flow outlets of the fans;

the jet air duct is mutually independent from the first heat exchange air duct and the second heat exchange air duct and is arranged inside the through channel, at least one induced air channel is defined between an air duct wall of the jet air duct and a side wall of the through channel, and the jet air duct is arranged to controllably or operably move in the through channel so as to open and close the at least one induced air channel and/or adjust the overflowing area of the at least one induced air channel; and

and the jet fan is used for controllably driving the air outside the cabinet air conditioner indoor unit to flow to the jet air duct and flow out through the jet air duct, so that the natural air which flows out through the jet air duct and is not subjected to heat exchange is mixed with the heat exchange air flow sent out through the first heat exchange air duct and the second heat exchange air duct.

2. The cabinet air-conditioning indoor unit of claim 1,

the heat exchange air flow outlets of the first heat exchange air duct and the second heat exchange air duct face the front side of the shell, and a jet air outlet is formed in the front side of the jet air duct; and is

Two transverse air duct walls of the jet air duct are respectively arranged at intervals with two transverse side walls of the through channel so as to respectively form one air inducing channel at two transverse outer sides of the jet air duct.

3. The cabinet air-conditioning indoor unit of claim 2,

the jet air duct is arranged at the rear section of the through channel, the shape of the jet air duct is matched with that of the rear section of the through channel, and the cross sections of the rear section of the through channel and the jet air duct are gradually reduced from back to front; and is

The jet duct is arranged to move controllably or operatively in a forward-rearward direction to close both of the induction channels when it is moved forward to bring its two transverse duct walls into abutment with the two side walls of the rear section of the through-channel, respectively, and to open both of the induction channels when it is moved rearward to bring a gap between its two transverse duct walls and the two side walls of the rear section of the through-channel, respectively.

4. The cabinet air-conditioning indoor unit according to claim 3,

the cross section of the jet flow air duct is in a trapezoid shape gradually reduced from back to front; and is

When the two induced air channels are in a closed state, the rear surface of the jet air duct is flush with the rear surface of the shell.

5. The cabinet air-conditioning indoor unit of claim 1,

the jet fan is a centrifugal fan which is arranged below the jet air duct and communicated with the jet air duct, so that air outside the cabinet air conditioner indoor unit is driven to horizontally flow into the centrifugal fan and flow into the jet air duct from bottom to top in a controlled manner.

6. The cabinet air-conditioning indoor unit according to claim 5, wherein,

the jet fan is fixedly arranged below the jet air duct, and the jet air duct is configured to controllably or operably move relative to the jet fan; or,

the jet fan is directly or indirectly fixedly connected with the jet air duct, and the jet air duct is controlled or operated to move together with the jet fan.

7. The cabinet air-conditioning indoor unit according to claim 5, wherein,

a jet air outlet is formed in the front side of the jet air duct; and is

A vertically extending flow guide cavity is defined in the jet air duct, two vertically extending arc-shaped flow guide plates are symmetrically arranged in the jet air duct, and the two arc-shaped flow guide plates are convexly bent from back to front towards the mutually approaching direction, so that the flow guide cavity is adjacent to the front part of the jet air outlet to form a gradually reduced arc-shaped closing part.

8. The cabinet air-conditioning indoor unit according to claim 7,

a plurality of flow deflectors located on the inner side of the jet flow air outlet are arranged in the flow guide cavity, and the flow deflectors are arranged at intervals in the vertical direction; and is

The length of the flow deflector in the front-back direction is less than or equal to the depth of the arc-shaped flow deflector in the front-back direction, so that the flow deflector is positioned in the arc-shaped closing part.

9. The cabinet air-conditioning indoor unit according to claim 5, wherein,

a jet air outlet is formed in the front side of the jet air duct, a vertically extending guide cavity is defined in the jet air duct, a plurality of guide vanes positioned on the inner side of the jet air outlet are arranged in the guide cavity, and the guide vanes are arranged at intervals in the vertical direction; and is

The flow deflector comprises an arc section which is bent and extended from back to front from bottom to top and a straight section which is extended from the tail end of the arc section to the jet flow air outlet forward.

10. The cabinet air-conditioning indoor unit of claim 1,

the through passage is formed in the middle of the casing, the casing is also provided with a first air inlet and a second air inlet which are respectively arranged at two transverse sides of the casing, and the first air inlet and the second air inlet are respectively communicated with the first heat exchange air duct and the second heat exchange air duct; and is

The heat exchangers in the first heat exchange air duct and the second heat exchange air duct and the fans in the first heat exchange air duct and the second heat exchange air duct are symmetrically arranged on a horizontal vertical plane of the casing, and the fans in the first heat exchange air duct and the second heat exchange air duct are cross-flow fans with rotating shafts extending in the vertical direction.

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