CN102444934B - A kind of air-conditioner with air amplifier - Google Patents

Abstract

The invention discloses an air conditioner with an air amplifier, which includes an indoor unit. An air amplifier is arranged in an air duct inside the indoor unit. The air amplifier has a main airflow inlet towards the heat exchanger of the indoor unit and a main airflow towards the air outlet of the indoor unit. outlet and compressed air inlet for the input of compressed air. The present invention replaces the air volume required for heat exchange by installing an air amplifier in the indoor unit of the air conditioner to replace the cross-flow fan to effectively solve the complex production process and high production cost of the air conditioner caused by the use of the cross-flow fan in the existing indoor unit. Problems such as low production efficiency, high noise and low performance of the whole machine.

Description

An air conditioner with an air amplifier

technical field

The invention relates to an air conditioner, in particular to an air conditioner provided with an air amplifier, and belongs to the technical field of air conditioner structures.

Background technique

The wall-mounted air conditioners in the existing market generally use a cross-flow fan as a power source, and the drive of the cross-flow fan makes the air conditioner generate a strong air volume to realize the cooling or heating function of the air conditioner. The internal structure of the indoor unit of the existing wall-mounted air conditioner is shown in FIG. 1 , and a heat exchanger 11 and a cross-flow fan 12 located below it are arranged inside the housing of the indoor unit. Taking the cooling process of an air conditioner as an example, the air volume generation and cooling process are as follows: After the air conditioner is powered on, the cross-flow fan 12 will generate strong suction and pressure at a high speed. The air outlet 14 of the air discharges at a high speed, causing an instant vacuum inside the indoor unit, and forming a negative pressure difference with the external atmospheric pressure. Under the effect of this negative pressure difference, the room temperature air above the indoor unit passes through the intake grill 13 of the indoor unit at high speed and enters the interior of the indoor unit. The air at room temperature entering the interior of the indoor unit is rapidly cooled when passing through the heat exchanger 11, and the cooled gas is driven by the cross-flow fan 12 and discharged outside through the air outlet 14 to achieve the purpose of cooling the indoor temperature.

Since the cross-flow fan cannot be obtained by one-time molding with a mold, generally a small fan segment is first molded with a mold, and then ultrasonic welding is used to weld the small fan segment into a whole fan. This processing method has a long production line and often consumes a lot of human resources and time resources, which determines that the mass production process of cross-flow fans is relatively complicated, and also increases the time and complexity of the overall production line of air conditioners.

On the other hand, due to the large size of the cross-flow fan, in the indoor unit of the wall-mounted air conditioner, it is necessary to design a special fixed structure such as a base and a bearing for the cross-flow fan, and it is also necessary to set up a motor for driving the cross-flow fan and its supporting structure. , the design and installation structure is complex and occupies a large amount of indoor unit internal space, resulting in a small internal air duct space and strict requirements on the air duct structure, which is not conducive to the optimization of the air duct structure, the air outlet effect is poor, and the air conditioner is reduced. Machine efficiency. All of these increase the production cost of the air conditioner to a certain extent, increase the noise of the whole machine running, and reduce the production efficiency and the performance of the whole machine.

In view of the above, how to design an air conditioner that cancels the cross-flow fan and can still generate the required driving air volume is the gist of the present invention.

Contents of the invention

The object of the present invention is to provide an air conditioner with an air amplifier, by setting an air amplifier in the indoor unit of the air conditioner to replace the driving air volume required for the cross-flow fan to generate heat exchange, to solve the problem of air conditioning caused by the use of the cross-flow fan. The production process of the device is complex, the production cost is high, the production efficiency and the performance of the whole machine are low.

In order to achieve the above-mentioned purpose of the invention, the present invention adopts the following technical solutions to achieve:

An air conditioner with an air amplifier, comprising an indoor unit, an air amplifier is arranged in the air duct inside the indoor unit, the air amplifier has a main airflow inlet towards the heat exchanger of the indoor unit, a main airflow outlet towards the air outlet of the indoor unit, and a Compressed air inlet for entering compressed air.

As for the above-mentioned air conditioner, the air amplifier is preferably arranged at the air outlet of the indoor unit.

As for the above-mentioned air conditioner, the air amplifier can be installed at the air outlet of the indoor unit through claws or screws.

For the above-mentioned air conditioner, when the air amplifier is arranged at the air outlet of the indoor unit, in order to ensure the continuity and sealing of the entire air duct, the shape of the air amplifier is adapted to the shape of the air outlet of the indoor unit, and the air amplifier The main air outlet is larger than the air outlet of the indoor unit, the entire air amplifier is arranged at the air outlet of the indoor unit, and the main air outlet covers the entire air outlet of the indoor unit.

For the above-mentioned air conditioner, in order to ensure that the air amplifier can generate enough airflow driving force to blow out the required air volume from the indoor unit, the distance between the main airflow inlet and the main airflow outlet of the air amplifier is d, and the air amplifier’s The height is h, d/h≥0.5.

For the air conditioner mentioned above, in order to provide the air amplifier with the initial compressed air flow, the indoor unit is provided with an initial air flow generating device, and the compressed air inlet of the air amplifier is connected to the initial air flow generating device through an air pipeline.

For the above-mentioned air conditioner, in order to facilitate connection with the air amplifier and installation in the indoor unit, the initial air flow generating device is preferably installed on the framework of the indoor unit.

As for the air conditioner mentioned above, the initial airflow generating device can be realized by adopting the following structure: it includes a casing and an air inlet and an air outlet located at both ends of the casing, the air inlet communicates with the air outside the indoor unit, and the air outlet It is connected with an air pipeline, and then connected to the compressed air inlet of the air amplifier. The area of the air inlet is larger than the area of the air outlet; a motor and an impeller connected to the output shaft of the motor and driven by the motor are arranged inside the housing.

As with the above-mentioned air conditioner, the initial airflow generating device can also be realized by an air compressor.

Compared with prior art, advantage and positive effect of the present invention are:

1. Cancel the cross-flow fan in the indoor unit, and replace it with an air amplifier as the driving force source for the air duct of the indoor unit. The air amplifier has a simple structure and can be integrally processed and formed by a mold, which reduces the production process of the indoor unit parts. It is convenient for mass production. Moreover, the air amplifier is easy and convenient to install in the indoor unit, thereby simplifying the internal structure of the indoor unit, reducing the cost of the whole unit, and forming an air duct system with a larger space to increase the air exchange efficiency of the air conditioner.

2. Using the air amplifier as the driving force source of the air duct, it only needs to consume less air volume to output a large air volume, the wind force is stronger, and the cooling or heating effect is better; and it reduces the energy consumption of the entire air conditioner and saves energy.

3. There are no rotating parts in the air amplifier, so it is more convenient and safe to clean the entire air conditioner.

4. The air amplifier does not rely on the rotation of the parts to drive the air, so that the operating noise of the entire air conditioner is low, and the overall performance of the air conditioner is improved.

Other characteristics and advantages of the present invention will become clearer after reading the detailed description of the present invention in conjunction with the accompanying drawings.

Description of drawings

Fig. 1 is a schematic diagram of the internal structure of an existing wall-mounted air conditioner indoor unit;

Fig. 2 is a schematic diagram of the internal structure of an embodiment of the air conditioner indoor unit with an air amplifier in the present invention;

Fig. 3 is the structural representation of air amplifier in Fig. 2 embodiment;

Fig. 4 is the schematic diagram of the cross-sectional enlarged structure of the air amplifier in the embodiment of Fig. 2;

Fig. 5 is a schematic cross-sectional structure diagram of the initial airflow generating device in the embodiment of Fig. 2;

Fig. 6 is a schematic diagram of the internal structure of another embodiment of the air conditioner indoor unit with an air amplifier according to the present invention.

detailed description

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

The present invention proceeds from the perspectives of simplifying the structure of the indoor unit of the air conditioner, reducing the cost of the air conditioner, and improving the performance of the whole air conditioner. Considering that the existing indoor unit of the air conditioner uses a cross-flow fan as the power source to generate the required driving air volume, the structure is complex, Due to the low efficiency of the assembly line production process, the high cost of the air conditioner, and the low operating efficiency of the whole machine, a technical solution was proposed to eliminate the cross-flow fan and replace it with an air amplifier as the power source of the air conditioner, which can effectively solve the above problems.

2 to 5 show an embodiment of the air conditioner indoor unit with an air amplifier of the present invention. Wherein, Fig. 2 is a schematic diagram of the internal structure of this embodiment, Fig. 3 is a schematic diagram of the structure of the air amplifier in this embodiment, Fig. 4 is a schematic diagram of a cross-sectional enlarged structure of the air amplifier, and Fig. 5 is an initial airflow generating device in this embodiment Schematic diagram of the cross-sectional structure.

As shown in FIG. 2 , the indoor unit of the air conditioner in this embodiment is provided with a heat exchanger 21 , and an air duct 22 inside the indoor unit is formed between the air inlet grille 28 at the top of the indoor unit and the air outlet 24 at the bottom. An air amplifier 23 is provided in the internal air duct 22 . As shown in FIG. 3 , the air amplifier 23 has a main air inlet 231 toward the heat exchanger 21 , a main air outlet 232 toward the air outlet 24 , and a compressed air inlet 233 for inputting compressed air.

Considering that the internal air duct 22 has a larger cross-section at the air inlet grille 28 and a smaller cross-section at the air outlet 24, and the air amplifier 23 requires that the smaller the better the air duct cross-section, this embodiment uses the air The amplifier 23 is arranged near the air outlet 24 . Specifically, the air amplifier 23 may be installed on the water receiving tray 26 at the air outlet of the indoor unit at the air outlet 24 through claws or screws. During installation, it is necessary to avoid movement interference with the swing blade at the air outlet 24 .

In order to provide the air amplifier 23 with the initial compressed air flow, the indoor unit is also provided with an initial air flow generating device 25, and the compressed air inlet 233 of the air amplifier 23 is connected to the initial air flow generating device 25 through an air pipeline. For the specific structure of the initial airflow generating device 25, reference may be made to FIG. 5 and the description of FIG. 5 below.

In order to ensure the continuity and tightness of the entire internal air duct 22 , it is required that all the air blown out from the air outlet 24 pass through the main air outlet 232 of the air amplifier 23 . Based on this, the shape of the air amplifier 23 in this embodiment is adapted to the shape of the air outlet 24 of the indoor unit, such as an oblong structure as shown in FIG. 3 . Moreover, the main air outlet 232 of the air amplifier 23 is larger than the air outlet 24 of the indoor unit, and when the entire air amplifier 23 is installed at the air outlet 24, it is ensured that the main air outlet 232 covers the air outlet 24 of the entire indoor unit.

Moreover, in order to ensure that the air amplifier can generate sufficient airflow driving force so that the indoor unit can blow out the required air volume, as shown in FIG. 3 , the distance between the main airflow inlet 231 and the main airflow outlet 232 of the air amplifier 23 is d. The height of 23 is h, requiring d/h≥0.5.

3 and 4 show the schematic diagram of the enlarged structure of the air amplifier section, the working process of the air amplifier 23 of this embodiment is as follows: the compressed gas enters the air amplifier 23 through the compressed air inlet 233, revolves in its annular cavity 234, and After turning through the slit 235, it flows out at a high speed backward. Due to the "Coanda effect", the ejected air flow will flow forward along the side wall, thus forming a circle of high-speed annular air flow. The high-velocity annular airflow creates a low pressure in the central area, which causes a large forward jet flow in the central area. The airflow in the central area mixes with the initial airflow flowing in from the main airflow inlet 231 and moves forward, and finally the total amount of gas discharged through the main airflow outlet 232 can be up to about 100 times the amount of compressed gas, thus generating a large amount of air behind the main airflow inlet 231. High negative pressure, which is a source of power.

In this embodiment, the initial compressed gas required by the air amplifier 23 is provided by the initial airflow generating device 25 , and FIG. 5 shows a schematic cross-sectional structure diagram of the initial airflow generating device 25 in this embodiment.

As shown in FIG. 5 , the initial airflow generating device includes a housing 251 , an air inlet 252 and an air outlet 253 located at both ends of the housing 251 , wherein the area of the air inlet 252 is larger than that of the air outlet 253 . A motor 254 and an impeller 255 connected to the output shaft of the motor 254 and driven by the motor 254 are arranged inside the housing 251 . In order to facilitate the connection with the air amplifier 23 and the installation in the indoor unit, when the air amplifier 23 is installed at the air outlet 24, the initial air flow generating device 25 can be installed on the frame 27 at the base of the indoor unit, as shown in Figure 2 .

When the initial air flow generating device 25 is installed inside the indoor unit, its air inlet 252 communicates with the air outside the indoor unit, and the air outlet 253 is connected with an air pipeline, and then connected to the compressed air flow of the air amplifier 23 through the air pipeline. Entrance 233. After the power is turned on, the motor 254 drives the impeller 255 to rotate, and the strong airflow enters the initial airflow generating device 25 from the outside, and then enters the air amplifier 23 from the air outlet 253, the air pipeline and the compressed air inlet 233 at a relatively high flow rate. .

In addition, the initial airflow generating device 25 can be realized by using the above-mentioned structure, or can also be realized by using an air compressor, or other devices capable of generating compressed gas, which are not specifically limited here. For example, if a common air compressor on the market is used as the initial airflow generating device, some changes can be made to the air compressor as required, such as replacing the motor, improving heat dissipation, etc., and then it can be used in the air conditioner.

Taking the cooling working mode of the air conditioner as an example, the working process of the air conditioner in this embodiment is briefly introduced as follows:

Turn on the power supply of the air conditioner, the initial airflow generator 25 starts to work, and outputs the initial compressed airflow to the air amplifier 23; at the same time, the outdoor unit starts to work, and the heat exchanger 21 gradually cools down.

The compressed air flow is injected into the air amplifier 23, and the air amplifier 23 is excited to generate a large amount of air flow, which is jetted out from the main air outlet 232 and the air outlet 24, thereby generating a strong negative pressure in the entire internal air duct 22 of the indoor unit.

Under the effect of negative pressure, the room temperature air at the intake grille 28 flows into the heat exchanger 21 of the indoor unit in a large amount, and becomes a low-temperature gas after being cooled by the heat exchanger 21 .

Under the effect of negative pressure, the low-temperature gas passes through the air amplifier 23 along the internal air channel 22, and is discharged into the room from the air outlet 24, and mixes with the indoor room temperature air, so as to achieve the purpose of cooling.

For the working process of the air conditioner in the heating operation mode, refer to the above cooling operation process.

Due to the cancellation of the cross-flow fan, the internal structure of the indoor unit is simplified, thereby increasing the internal space of the indoor unit. The installation position of the components inside the indoor unit and the shape of the air duct can be re-optimized according to actual needs to increase the number of indoor units. Wind effect, improve the overall efficiency of the air conditioner.

Figure 6 is a schematic diagram of the internal structure of another embodiment of the indoor unit of an air conditioner with an air amplifier according to the present invention after optimizing the position of internal components and the shape of the air duct. This schematic diagram omits some internal components.

As shown in Figure 6, the indoor unit of this embodiment is installed and fixed with an air amplifier 33 at the water receiving tray 36 at the air outlet 34, and an initial air flow generating device for providing the initial compressed air flow is provided on the rear side of the air amplifier 33 35. The initial airflow generating device is installed on the framework 37 at the base of the indoor unit.

Compared with the embodiment shown in Fig. 2, the heat exchanger 31 in the indoor unit of this embodiment is changed from the curved structure shown in Fig. 2 to an extended structure, and the heat exchange efficiency is significantly improved. And, between the heat exchanger 31 and the intake grille 28, the heat exchanger 31 and the air amplifier 33, a larger internal air duct 32 is formed, and the air flows more smoothly in the larger internal air duct 32, which is more It is beneficial to increase the air volume and wind speed blown out from the air outlet 34, and increases the air outlet effect of the indoor unit.

The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art can still understand the foregoing embodiments. Modifications are made to the technical solutions described, or equivalent replacements are made to some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions claimed in the present invention.

Claims (8)

1. an air-conditioner with air amplifier, including indoor set, it is characterized in that, in the internal air channel of indoor set, air outlet of indoor set place being provided with air amplifier, air amplifier has the primary air entrance towards heat exchanger indoor unit, the main airflow exit towards air outlet of indoor set and for inputting the compressed air stream entrance of compressed air stream.

2. air-conditioner according to claim 1, it is characterised in that described air amplifier is arranged on air outlet of indoor set place by claw or screw.

3. air-conditioner according to claim 1, it is characterized in that, the shape of described air amplifier is suitable with air outlet of indoor set shape, and the main airflow exit of air amplifier is more than air outlet of indoor set, whole air amplifier is disposed in the interior machine air outlet place, and main airflow exit covers whole air outlet of indoor set.

4. air-conditioner according to claim 3, it is characterised in that the distance between the primary air entrance of described air amplifier and main airflow exit is d, the height of air amplifier is h, d/h >=0.5.

5. air-conditioner according to any one of claim 1 to 4, it is characterised in that be provided with initial gas flow generating apparatus in indoor set, the compressed air stream entrance of described air amplifier is connected with initial gas flow generating apparatus by gas pipeline.

6. air-conditioner according to claim 5, it is characterised in that described initial gas flow generating apparatus is arranged on indoor set skeleton.

7. air-conditioner according to claim 5, it is characterized in that, described initial gas flow generating apparatus includes housing and is positioned at air inlet and the gas outlet at housing two ends, air inlet communicates with the air outside indoor set, gas outlet is connected to gas pipeline and then is connected to the compressed air stream entrance of described air amplifier, and air inlet area is more than gas outlet area; Enclosure interior be provided with motor and be connected on motor output shaft, by motor-driven impeller.

8. air-conditioner according to claim 5, it is characterised in that described initial gas flow generating apparatus is air compressor.