CN111578496A - A diversion structure and an air conditioner - Google Patents

Abstract

The invention provides a flow guide structure and an air conditioner, relates to the technical field of air conditioners, and solves the technical problem that an air conditioning system with a single centrifugal fan is unsmooth in air inlet at an air inlet side. The flow guide structure comprises a first flow guide part and a second flow guide part to form a two-stage flow guide system, so that the noise at the air inlet when air is discharged from the upper part and the lower part is reduced; the second flow guide part positioned between the first flow guide part and the heat exchanger is provided with a central channel, and the air flow passing through the middle part of the heat exchanger enters the air inlet side of the fan through the central channel; the outer edge of the central channel is bent and extended towards two ends far away from the center of the heat exchanger to form a drainage channel, so that airflow at the far end of the air inlet side of the system flows through the heat exchanger and then is introduced along the drainage channel, the airflow circulation at the air inlet side of the system is increased, and the air inlet uniformity of the system is improved; the air flow at the far end of the air inlet side of the system exchanges heat through the end part of the heat exchanger, so that the difference of heat exchange effects between the center of the heat exchanger and the upper end part and the lower end part is reduced, the heat exchange effect is improved, and the air conditioner can refrigerate and heat more quickly.

Description

A diversion structure and an air conditioner

technical field

The present invention relates to the technical field of air conditioners, in particular to a flow guiding structure and an air conditioner.

Background technique

Existing cabinet air conditioners with dual air outlets mostly use dual centrifugal fans. One fan controls the upper air outlet and the other fan controls the lower air outlet. This method takes up a lot of space and the structure is not compact enough. In order to solve this problem, a cabinet with a single centrifugal fan to realize the upper and lower air discharge has appeared.

The applicant found that the prior art has at least the following technical problems:

The single centrifugal fan realizes the upper and lower air discharge of the cabinet. Because the centrifugal fan is located in the middle of the heat exchanger, the wind speed on the side of the air inlet near the fan is faster, resulting in hidden dangers such as noise. The single centrifugal fan is provided with a separate diversion ring, and the diversion effect is not good, which leads to the poor air intake on the air inlet side of the system, which further leads to poor air volume effect. The particularity of the position of the single centrifugal fan causes the heat exchange effect of the heat exchanger to gradually rely on the central position of the heat exchanger, resulting in extremely poor heat exchange effect at the upper and lower top positions of the heat exchanger, which further affects the cooling and heating effect of the air conditioner.

SUMMARY OF THE INVENTION

The purpose of the present invention is to provide a flow guide structure and an air conditioner provided with the structure, so as to solve the technical problem of poor air intake on the air inlet side of the air conditioning system provided with a single centrifugal fan in the prior art. The technical effects that can be produced by the preferred technical solutions among the technical solutions provided by the present invention are detailed in the following descriptions.

For achieving the above object, the invention provides the following technical solutions:

A diversion structure provided by the present invention includes:

a first air guide part, which is arranged on the periphery of the fan accommodating cavity of the air duct, and the flow area of the first air guide part is tapered along the air flow direction;

A second flow guide part is disposed between the first flow guide part and the heat exchanger, the second flow guide part has a central channel, and the outer edge of the central channel is directed to the distance away from the center of the heat exchanger. The two ends are bent and extended to form a drainage channel, so that the airflow at the far end of the intake side of the system can flow through the heat exchanger and then be introduced along the drainage channel.

Optionally, the second guide part is a guide plate, the middle part of the guide plate has a through hole, and the edge of the through hole protrudes along the axial direction to form the central channel, and the drainage channel is located at the center of the guide plate. both ends of the deflector.

Optionally, the through holes are arranged corresponding to the fan accommodating cavity.

Optionally, the number of the drainage channels is two, and the two drainage channels are arranged symmetrically with a plane passing through the axis of the through hole as a symmetrical plane.

Optionally, the drainage channel and the central channel smoothly transition.

Optionally, the inlet end of the drainage channel is close to the end of the heat exchanger away from the center, and the outlet end of the drainage channel is communicated with the first drainage portion.

Optionally, the first air guide part is an air guide ring, and the air guide ring is located on the air inlet side of the fan accommodating cavity.

An air conditioner provided by the present invention includes an air duct, a centrifugal fan, a heat exchanger and any one of the above-mentioned flow guiding structures.

Optionally, the second air guide is installed on the heat exchanger.

Optionally, the first air guide portion is integrally formed with the air duct.

The present invention provides a diversion structure and an air conditioner, wherein the first diversion part and the second diversion part of the diversion structure constitute a two-stage diversion system, which reduces the air inlet when the single centrifugal fan realizes the upper and lower air outlet. Noise; the second guide part located between the first guide part and the heat exchanger has a central channel, and the air flowing through the middle of the heat exchanger enters the air inlet side of the fan from the center channel; the outer edge of the center channel moves away from the The two ends of the center of the heat exchanger are bent and extended to form a drainage channel, so that the airflow at the far end of the air inlet side of the system can flow through the heat exchanger and then be introduced into the air inlet side of the fan along the drainage channel, so that the air intake is more smooth, thereby increasing the air intake of the system. The airflow on the side of the heat exchanger improves the uniformity of the air intake of the system; and the airflow at the far end of the air intake side of the system flows through the end of the heat exchanger for heat exchange, which reduces the difference between the center of the heat exchanger and the upper and lower ends of the heat exchanger. The difference in heat exchange effect improves the heat exchange effect and further enhances the rapid cooling and heating of the air conditioner.

Description of drawings

In order to explain the embodiments of the present invention or the technical solutions in the prior art more clearly, the following briefly introduces the accompanying drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only These are some embodiments of the present invention. For those of ordinary skill in the art, other drawings can also be obtained according to these drawings without creative efforts.

1 is a schematic diagram of the positional relationship between an air duct component, a deflector and a heat exchanger of an air conditioner cabinet provided by a specific embodiment of the present invention;

Figure 2 is a schematic diagram of the connection relationship between a deflector and a deflector;

Fig. 3 is the three-dimensional structure schematic diagram of the deflector;

Figure 4 is a schematic diagram of the installation position of the deflector relative to the heat exchanger;

FIG. 5 is a schematic diagram of the flow state of the air flow under the action of the guide structure, and the arrow in the figure is the flow direction of the air flow.

In the figure, 1, air duct component; 2, guide ring; 3, guide plate; 31, central channel; 32, drainage channel; 33, through hole; 4, heat exchanger; 5, evaporator support.

Detailed ways

In order to make the objectives, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be described in detail below. Obviously, the described embodiments are only some, but not all, embodiments of the present invention. Based on the embodiments of the present invention, all other implementations obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present invention.

In one aspect, the present invention provides a diversion structure, comprising:

a first air guide part, which is arranged on the periphery of the fan accommodating cavity of the air duct, and the flow area of the first air guide part is tapered along the air flow direction;

The second flow guide portion is disposed between the first flow guide portion and the heat exchanger 4 . The second flow guide portion has a central channel 31 , and the outer edge of the central channel 31 is bent to both ends away from the center of the heat exchanger 4 The drainage channel 32 is formed by extending, so that the airflow at the far end of the intake side of the system can flow through the heat exchanger 4 and then be introduced along the drainage channel 32 .

The first diversion part and the second diversion part form a two-stage diversion system, which reduces the noise at the air inlet when the single centrifugal fan realizes the up and down air discharge; the second diversion part located between the first diversion part and the heat exchanger 4 The guide part has a central channel 31, and the air flowing through the middle of the heat exchanger 4 enters the air inlet side of the fan from the central channel 31; , the airflow at the far end of the air inlet side of the system can flow through the heat exchanger 4 and then be introduced into the air inlet side of the fan along the drainage channel 32, so that the air intake is more smooth, thereby increasing the airflow on the air inlet side of the system and improving the air intake of the system. Moreover, the airflow at the far end of the intake side of the system flows through the end of the heat exchanger 4 for heat exchange, which reduces the heat exchange effect gap between the center position of the heat exchanger 4 and the upper and lower end positions, and improves the heat exchange. The effect further enhances the rapid cooling and heating of the air conditioner.

As an optional embodiment, the second guide part is a guide plate 3, the middle part of the guide plate 3 has a through hole 33, the edge of the through hole 33 protrudes along the axial direction to form a central channel 31, and the drainage channel 32 is located in the guide plate 33. Both ends of the flow plate 3.

The central channel 31 that protrudes and tapers toward the side of the fan can collect the airflow flowing through the middle of the heat exchanger 4; The airflow directed to both ends of the heat exchanger 4 is collected, and the airflow is collected and circulated on the intake side of the fan.

As an optional embodiment, the through holes 33 are provided corresponding to the fan accommodating cavity. The through hole 33 in the middle of the guide plate 3 is arranged corresponding to the fan accommodating cavity, and the resistance is small, which is convenient for air circulation.

As an optional embodiment, the number of the drainage channels 32 is two, and the two drainage channels 32 are arranged symmetrically with a plane passing through the axis of the through hole 33 as a symmetrical plane.

The two drainage channels 32 are arranged symmetrically, so that the heat exchange at the upper and lower ends of the heat exchanger 4 is more uniform.

As an optional embodiment, the drainage channel 32 and the central channel 31 have a smooth transition, so that the airflow resistance is small and the energy efficiency is higher.

As an optional embodiment, the inlet end of the drainage channel 32 is close to the end of the heat exchanger 4 away from the center, which increases the air flow, improves the heat exchange effect, and makes the heat exchange rate faster; the outlet end of the drainage channel 32 is connected to the first A diversion part directly diverts the heat-exchanged air to the first diversion part to realize double-stage diversion.

As an optional embodiment, the first guide part is a guide ring 2, and the guide ring 2 is located on the air inlet side of the fan accommodating cavity, which can effectively and directly guide and collect the airflow on the air inlet side of the fan to the fan accommodating cavity. .

In another aspect, the present invention provides an air-conditioning cabinet, comprising an air duct, a centrifugal fan, a heat exchanger 4 and any of the above-mentioned flow guiding structures. The air duct has an upper air outlet and a lower air outlet, and the centrifugal fan is located in the middle of the air duct.

As shown in FIG. 1 , the air-conditioning cabinet includes an integrated air duct member 1 with an air guide ring 2 , a heat exchanger 4 and a guide plate 3 arranged between the air duct member 1 and the heat exchanger 4 . The guide ring 2 is integrally formed with the air duct component 1, the structure is simple, no installation is required, and the reliability is high. The two-stage diversion system is mainly composed of the diversion ring 2 and the diversion plate 3 in the air duct component 1, and the positional relationship between the two is shown in FIG. 2 . The deflector 3 is installed at the inner position between the deflector 2 and the heat exchanger 4, and the two sides of the deflector 3 are fixed to the screw holes corresponding to the side plates of the heat exchanger 4 by four screws, see Figure 4. The structure of the guide plate 3 is shown in FIG. 3 , a through hole 33 is left in the middle of the guide plate 3 , and the center channel 31 is formed by a protrusion in the middle position, and the drainage channel 32 is formed by concave extension at the upper and lower ends. The smooth surface structure is convenient for guiding the smoothness of the air intake at the position of the air inlet. Wherein, the air duct member 1 is provided with a guide ring 2 near the air inlet side, and the guide ring 2 is located at the edge of the air inlet of the air duct member 1; The flow plate 3, and the baffle plate 3 is located in the middle position area of the heat exchanger 4 assembly, the middle through hole 33 of the baffle plate 3 is aligned with the centrifugal fan port of the air duct member 1, so that the air duct member 1, the baffle plate 3. A cavity is formed between the components of the heat exchanger 4, which is convenient for gas flow. Due to the existence of the two-stage guide system composed of the guide ring 2 and the guide plate 3, when the air conditioner is cooling and heating, the wind speed flowing through the air inlet is acted by the single centrifugal fan to make the heat exchanger 4 in the middle position. The wind speed is almost the same as the wind speed away from the middle position, which increases the smoothness of the wind in the air inlet area, thereby reducing the noise at the centrifugal fan port and further increasing the air volume. As shown by the arrows in FIG. 5 , the wind flowing through the heat exchanger 4 not only passes through the center position of the guide plate 3 (the center channel 31 ), but also flows through the upper and lower curved surfaces of the guide plate 3 (the drainage channel 32 ), and passes through the air duct. The deflector ring 2 at the place guides the flow into the centrifugal fan port again, and then sends it to the air outlet of the air conditioner.

In practical application, the installation position of the deflector 3 on the heat exchanger 4 can be adjusted with the change of the position of the centrifugal fan, so that the through hole 33 of the deflector 3 corresponds to the fan port.

In this embodiment, the centrifugal fan is a forward-directed centrifugal fan, and can also be replaced with a backward-directed centrifugal fan.

The beneficial effects of the present invention are: by adding the deflector 3 to form a set of two-stage diversion system with the diversion ring 2 at the position of the air duct, the noise at the air inlet of the upper and lower air outlet cabinets can be further solved by a single centrifugal fan. It also makes the air intake of the single centrifugal fan smoother on the air intake side, which improves the air intake uniformity on the air intake side of the air conditioner; because the gap between the heat exchange effect between the center position of the heat exchanger 4 and the upper and lower ends is narrowed, the heat exchange effect is enhanced. The cooling and heating replacement effect of the air conditioner is further enhanced, and the rapid cooling and heating performance of the air conditioner is further enhanced.

The above are only specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed by the present invention. should be included within the protection scope of the present invention. Therefore, the protection scope of the present invention should be subject to the protection scope of the claims.

Claims (10)

1. A flow directing construction, comprising:

the first flow guide part is arranged at the periphery of the fan accommodating cavity of the air duct, and the flow area of the first flow guide part is gradually reduced along the airflow flowing direction;

the second flow guide part is arranged between the first flow guide part and the heat exchanger and is provided with a central channel, the outer edge of the central channel bends and extends towards two ends far away from the center of the heat exchanger to form a flow guide channel, and airflow at the far end of the air inlet side of the system can flow through the heat exchanger and then is led in along the flow guide channel.

2. The flow guide structure according to claim 1, wherein the second flow guide part is a flow guide plate, a through hole is formed in the middle of the flow guide plate, the edge of the through hole protrudes in the axial direction to form the central channel, and the flow guide channels are located at two ends of the flow guide plate.

3. The flow guide structure according to claim 2, wherein the through hole is disposed corresponding to the blower receiving cavity.

4. The flow guide structure according to claim 2, wherein the number of the flow guide channels is two, and the two flow guide channels are arranged symmetrically with respect to a plane passing through the axis of the through hole as a symmetry plane.

5. The flow directing structure of claim 2, wherein the flow directing channel is rounded to the central channel.

6. The flow guide structure according to claim 1, wherein the inlet end of the flow guide channel is close to the end of the heat exchanger far from the center, and the outlet end of the flow guide channel is communicated with the first flow guide part.

7. The flow guide structure according to claim 1, wherein the first flow guide part is a flow guide ring, and the flow guide ring is positioned on an air inlet side of the fan accommodating cavity.

8. An air conditioner, characterized in that, it comprises an air duct, a centrifugal fan, a heat exchanger and the flow guiding structure of any claim 1-7.

9. The air conditioner of claim 8, wherein the second flow guide is mounted to the heat exchanger.

10. The air conditioner of claim 8, wherein the first deflector is integrally formed with the duct.

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