CN110887121A - A fresh air air conditioner indoor unit - Google Patents

Abstract

The present invention provides a fresh air air conditioner indoor unit. The fresh air air conditioner indoor unit of the present invention has a fresh air device added to the traditional air conditioner indoor unit. Therefore, during the cooling or heating process of the air conditioner, even if the window is closed, the fresh air device can pass through the fresh air device. Introduce outdoor air into the room to provide continuous and fresh air for closed indoor spaces, thereby increasing the oxygen content of indoor air and preventing air-conditioning diseases. The ratio between the distance between the air outlet of the fresh air device and the air inlet of the indoor unit and the length of the air outlet along the lateral direction of the casing is set between 2:1 and 1:1. In this way, the airflow sent from the air outlet is easier to be sucked by the air inlet again, so that more air sent from the air outlet enters the air inlet and exchanges heat with the heat exchanger. After the outdoor fresh air sent into the room is heated by the indoor unit heat exchanger, it quickly reaches the indoor temperature, so that the indoor temperature will not fluctuate greatly, keep the indoor temperature stable, and give users a comfortable and healthy environment.

Description

A fresh air conditioner indoor unit

technical field

The invention relates to an air conditioner, in particular to an indoor unit of a fresh air air conditioner.

Background technique

Air conditioners are a kind of household appliances that are widely used. They generally have heating and cooling functions. When the ambient temperature is too low or too high, the temperature of the indoor air is adjusted to provide users with a suitable indoor environment. user's quality of life.

However, since the current air conditioner only circulates the indoor air for heating or cooling during heating or cooling, and at the same time, in order to maintain the indoor temperature, the user will close the door of the room at the same time, so that the indoor air quality will be reduced. will gradually deteriorate, thereby adversely affecting the user's physical health. In particular, air pollution has been increasing in recent years, especially in the winter heating season, people are reluctant to open windows for ventilation. In this way, the indoor air quality will become worse and lower, and the oxygen content will become lower and lower, which will affect physical health.

The current indoor unit of the air conditioner still has the problem that the outdoor air cannot be introduced. Developed countries abroad, such as Germany, have introduced the methods of large-scale air conditioning in factories and theaters and the introduction of fresh air devices into homes after refining and miniaturization. However, the cost is too high. Generally, the price of fresh air devices suitable for households is 4,000, 5,000, or even tens of thousands, which is more expensive than the price of air conditioners, which subverts the general Chinese people's concept of cost-effective consumption. Price is a big trend right now.

SUMMARY OF THE INVENTION

One object of the present invention is to provide an indoor unit for a fresh air conditioner to at least solve some of the defects in the prior art.

A further object of the present invention is to improve indoor air quality.

Another further object of the present invention is to avoid fluctuations in the indoor ambient temperature.

In particular, the present invention provides an indoor unit for a fresh air conditioner, comprising: a casing with an air supply fan and a heat exchanger arranged inside, an air inlet at the top of the casing, and an air supply opening at the lower part; a fresh air device arranged on the casing The one side end of the fan includes an air inlet module and a fan module connected to the air inlet module. The air inlet module is connected to the outdoor environment and is used to absorb the air of the outdoor environment. The fan module is connected to the indoor environment through the air outlet set above it. And it is used to discharge the outdoor air drawn by the air inlet module into the indoor environment; the ratio between the distance between the air outlet and the air inlet and the length of the air outlet along the lateral direction of the casing is between 2:1 and 1:1; The fan is also configured to suck in at least part of the air discharged from the fan module from the air inlet, so as to discharge the air from the air supply port at the lower part of the casing after exchanging heat with the heat exchanger.

Preferably, an air intake cavity is defined inside the air intake module, and a pipeline connection part communicated with the air intake cavity is provided, and the pipeline connection part is used for connecting the fresh air intake pipe leading to the outdoor; the fan module includes a centrifugal fan and The volute is arranged outside the centrifugal fan; the air inlet of the volute is communicated with the air inlet cavity, and its air outlet faces the top of the casing. air outlet.

Preferably, the air outlet and the air inlet are located in the same plane; and the air outlet is provided with an air outlet grille that is consistent with the air inlet grille of the air inlet of the casing, and the grille plate of the air outlet grille is inclined toward the direction of the air inlet. .

Preferably, the centrifugal fan is further configured so that the ratio of its rotational speed to the rotational speed of the air blower is less than a preset value.

Preferably, the pipeline connection portion is arranged at the lower rear of the air intake module, and the fresh air intake pipe extends out of the housing along the rear side of the bottom of the housing together with the pipeline of the indoor unit.

Preferably, a filter screen is detachably installed on the air inlet side of the air inlet module close to the fan module, which is used to filter the air delivered to the room.

Preferably, a purification module is provided on the inner side of the outlet grille, and the purification module adopts a strong electric field dielectric technology to purify the air delivered to the room.

Preferably, the purification module is installed in cooperation with a groove formed on the inner side of the air outlet of the fan module.

Preferably, a PTC heater is provided between the purification module and the air outlet grille for heating the air delivered to the room.

Preferably, the fresh air device operates independently of the indoor machine heating or cooling.

In the fresh air air conditioner indoor unit of the present invention, since a fresh air device is newly added to the traditional air conditioner indoor unit, during the cooling or heating process of the air conditioner, even if the window is closed, the outdoor air can be introduced into the room through the fresh air device, which is a closed indoor space. Provide continuous and fresh air, thereby increasing the oxygen content of indoor air and preventing air-conditioning diseases. The ratio between the distance between the air outlet of the fresh air device and the air inlet of the indoor unit and the length of the air outlet along the lateral direction of the casing is set between 2:1 and 1:1. In this way, the airflow sent from the air outlet is easier to be sucked by the air inlet again, so that more air sent from the air outlet enters the air inlet and exchanges heat with the heat exchanger. After the outdoor fresh air sent into the room is heated by the indoor unit heat exchanger, it quickly reaches the indoor temperature, so that the indoor temperature will not fluctuate greatly, keep the indoor temperature stable, and give users a comfortable and healthy environment.

Further, in the fresh air device of the present invention, a filter screen and a purification device are installed, which can purify the fresh air entering the room, especially now that the air pollution is increasing day by day, the purified air is sent into the room to improve the quality of the indoor air. , reduce the harm of polluted air to the body.

Furthermore, the fresh air device of the present invention can be installed inside the indoor unit, integrated with the indoor unit, or installed outside the indoor unit. Regardless of the installation state of any form, the cost of using the fresh air blower in the prior art can be greatly reduced, the noise is low, and the user experience is better.

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 an overall schematic diagram of an indoor unit of a fresh air conditioner according to an embodiment of the present invention;

2 is a top view of a fresh air air conditioner indoor unit according to an embodiment of the present invention;

Fig. 3 is a partial enlarged view of the air outlet of the fresh air air conditioner indoor unit shown in Fig. 2;

Fig. 4 is the internal structure schematic diagram of the fresh air air conditioner indoor unit shown in Fig. 1;

Fig. 5 is the partial structure schematic diagram of the fresh air conditioner indoor unit shown in Fig. 1;

Fig. 6 is the schematic diagram of the fresh air device of the fresh air air conditioner indoor unit shown in Fig. 1;

Fig. 7 is the front view of the fresh air device shown in Fig. 4;

Figure 8 is a schematic cross-sectional view taken along section line A-A in Figure 7;

FIG. 9 is a schematic cross-sectional view taken along section line B-B in FIG. 7 .

Detailed ways

Fig. 1 is an overall schematic diagram of a fresh air air conditioner indoor unit 10 according to an embodiment of the present invention; Fig. 2 is a top view of a fresh air air conditioner indoor unit according to an embodiment of the present invention; Fig. 3 is an air outlet of the fresh air air conditioner indoor unit shown in Fig. 2 4 is a schematic diagram of the internal structure of the indoor unit 10 of the fresh air air conditioner shown in FIG. 1 ; FIG. 5 is a schematic diagram of a partial structure of the indoor unit 10 of the fresh air air conditioner shown in FIG. 1 . It can be seen from FIG. 1 that the fresh air air conditioner indoor unit 10 provided by the present invention includes a fresh air device 200 in addition to the indoor unit having the same appearance and performance as the prior art. Specifically, with reference to FIGS. 1 to 4 , it can be known that the indoor unit 10 includes a casing 100 , and an air blower (not shown in the figure) and a heat exchanger 300 are arranged inside the casing 100 , and the top of the casing 100 is arranged An air inlet 110 is opened, and an air supply port 120 is formed in the lower part of the casing 100 . The indoor air enters the interior of the indoor unit 10 from the air inlet 110 through the air supply fan, and after heat exchange (cooling or heating) by the heat exchanger 300, then leaves the interior of the indoor unit through the air supply port 120. Through the above methods, the temperature of the indoor air is adjusted when the ambient temperature is too low or too high, so as to provide a user with a suitable indoor environment and effectively improve the quality of life of the user. It is reasonable to control the overall thickness of the above-mentioned fresh air device 200 within 100 mm. In this embodiment, the fresh air device is about 70 mm, which ensures that the length of the whole machine is as short as possible while satisfying the fresh air volume and reducing noise as much as possible to reduce manufacturing costs. cost and reduce the occupied space of the indoor unit.

In the fresh air air conditioner indoor unit 10 of the present invention, since a fresh air device 200 is newly added to the conventional air conditioner indoor unit 10, during the cooling or heating process of the air conditioner, even if the indoor windows are kept closed, the outdoor air can be introduced through the fresh air device 200 Indoors, provide continuous and fresh air for closed indoor spaces, thereby increasing the oxygen content of indoor air and preventing air-conditioning diseases.

In some embodiments, as shown in FIG. 1 , the fresh air device 200 is disposed at one end of the casing 100 and inside the casing 100 , and is integrated with the original air conditioner indoor unit, and the fresh air device 200 will not be exposed. Outside the indoor unit 10 , the aesthetics of the appearance is maintained, and the space for installing the indoor unit 10 is saved.

Further, according to the analysis of FIG. 4 and FIG. 5 , the fresh air device 200 includes an air intake module 210 and a fan module 220, wherein the air intake module 210 is communicated with the fan module 220; the fan module 220 defines an air intake cavity 211 inside, and A pipeline connection part 212 is provided in communication with the air inlet cavity 211 , and the pipeline connection part 212 is used for connecting the fresh air air inlet pipe 213 leading to the outside.

6 is a schematic diagram of the fresh air device 200 of the fresh air air conditioner indoor unit 10 shown in FIG. 1 , FIG. 7 is a front view of the fresh air device 200 shown in FIG. 4 ; FIG. 8 is a schematic cross-sectional view taken along the cutting line A-A in FIG. 7 ; FIG. 9 is a schematic cross-sectional view taken along the section line B-B in FIG. 7 .

Specifically, as shown in FIGS. 6 to 9 , the fan module 220 includes a centrifugal fan 221 and a volute 222 disposed outside the centrifugal fan 221 . The air inlet of the volute 222 communicates with the air inlet cavity 211 of the air inlet module 210 . , and its air outlet 223 faces the top of the casing 100 , as shown in FIG. 1 . The centrifugal fan 221 is configured to inhale the air from the outside air from the air inlet chamber 211 of the air inlet module 210 and discharge it from the air outlet 223 of the volute 222 , and continuously deliver the outdoor fresh air to the indoor through the fan module 220 . In this embodiment, the air outlet 223 is a rectangular opening. The air outlet 223 and the air inlet 110 are in the same plane.

In addition, the ratio between the distance between the air outlet 223 and the air inlet 110 and the length of the air outlet 223 along the lateral direction of the casing 100 is between 2:1 and 1:1. As shown in FIGS. 2 and 3 , the distance between the tuyere 223 and the air inlet 110 is the distance from the edge of the tuyere 223 adjacent to the air inlet 110 to the edge of the air inlet 110 (ie, the distance b shown in FIG. 3 ). In this embodiment, the distance between the air outlet 223 and the air inlet 110 is set to 50±10mm, and the length of the air outlet 223 along the lateral direction of the casing 100 (ie, the distance a shown in FIG. 3 ) is set to 30±10mm. The air supply fan of the indoor unit 10 is configured to suck at least part of the air discharged from the centrifugal fan 221 from the air inlet 110 at the top of the casing 100 , so as to exchange heat with the heat exchanger 300 and discharge it from the air inlet 120 at the lower part of the casing 100 . In this way, after the outdoor fresh air sent into the room is exchanged by the heat exchanger 300 of the indoor unit 10, it quickly reaches the indoor temperature, so that the indoor temperature will not fluctuate greatly, keep the indoor temperature stable, and give users a comfortable and healthy environment. surroundings. After many experiments by the inventor, it is found that when the ratio of the distance between the air outlet 223 and the air inlet 110 to the length of the air outlet 223 along the lateral direction of the casing 100 is set within the above numerical range, the air discharged from the air outlet 223 can be more. into the air inlet 110.

In some preferred embodiments, the fresh air device 200 is integrally disposed at one end away from the electric control board of the indoor unit 10 , and the air intake module 210 is disposed outside the fan module 220 . Because a part of the outdoor fresh air entering the room from the fan module 220 is sucked into the air inlet 110 by the air supply fan of the indoor unit 10 and enters the indoor unit 10 for heat exchange and then is sent to the room again. Therefore, the fresh air device 200 is selected to be installed as close to the indoor unit 10 as possible. On the side of the air inlet 110, more fresh air from the outdoors enters the indoor unit 10, and is discharged into the room after heat exchange by the indoor unit 10. The more outdoor fresh air enters the indoor unit 10 for heat exchange, the smaller the indoor temperature fluctuation will be the more stable the temperature.

Further, as shown in FIG. 3 , the pipeline connection part 212 is arranged at the lower and rear of the air intake module 210, and the fresh air intake pipe 213 extends along the rear side of the bottom of the casing 100 together with the pipeline of the indoor unit 10 and passes out of the unit. In the case 100, the fresh air inlet duct 213 further penetrates the wall and leads to the outside, so that the outdoor fresh air enters the room through the fresh air inlet duct 213.

Of course, in some embodiments, according to the structure of the indoor unit 10 , the pipeline connection part 212 may not be provided, for example, the fresh air intake pipe 213 is directly connected to the rear of the intake module 210 to simplify the structure of the fresh air device 200 .

In other preferred embodiments, the rotation axis of the centrifugal fan 221 is parallel to the rotation axis of the air blower. This arrangement can reduce the noise of the centrifugal fan 221, improve the working efficiency of the centrifugal fan 221, and allow more outdoor fresh air to be introduced into the room. In addition, the centrifugal fan 221 is also configured so that the ratio of its rotational speed to the rotational speed of the air blower is smaller than a preset value. In this embodiment, the above-mentioned preset value is set to 1, that is, the rotational speed of the centrifugal fan 221 is required to be smaller than the rotational speed of the air blower. In this way, the wind speed of the air out of the air outlet 223 is small, and it is easier to be sucked by the air inlet 110 , so that more air sent from the air outlet 223 enters the air inlet 110 and exchanges heat with the heat exchanger 300 .

Further, as shown in FIG. 1 , at the air outlet 223 of the fan module 220 , an outlet grille 225 that is consistent with the air inlet grille of the air inlet 110 of the casing 100 is provided. An outlet grill 225 is provided at the air outlet 223 of the fan module 220 to prevent dust or mosquitoes from entering the fresh air device 200, polluting or destroying the internal structure of the fresh air device 200, and preventing reducing the effect of the fresh air device 200 for fresh air. The grille plate 2251 of the air outlet grill 225 is inclined in the direction of the air inlet 110 , so that the airflow discharged from the air outlet 223 can more easily enter the inside of the air inlet 110 .

In order to ensure the quality of the fresh air entering the room, in some embodiments, as shown in FIGS. 5 to 7 , a filter screen 224 can be detachably installed on the side of the air inlet module 210 close to the air inlet of the fan module 220 , which is used for the ventilation to the air. The indoor air is filtered, the filter screen 224 and the air inlet module 210 are detachably installed, and the filter screen 224 can be removed periodically for cleaning or replacement to ensure fresh air entering the room.

In other embodiments, a purification module 226 is disposed inside the outlet grille 225, and the purification module 226 uses the strong electric field dielectric technology to purify the air delivered to the room. Specifically, the purification module 226 is an FID purification device, and FID is a dust removal technology, which is the most advanced and efficient technology among the existing dust removal technologies, and is extremely effective. Use a strong electric field with a dielectric material as a carrier. The dielectric material forms a honeycomb hollow microchannel, and the dielectric wraps the electrode sheet to form a strong electric field in the channel, which exerts a huge attraction on the charged particles moving in the air, and can absorb almost 100% of the air while only generating the minimum airflow resistance. The moving particles are particularly effective in removing particulate pollutants such as PM2.5. The use of the above purification module 226 can greatly reduce PM2.5 particles in the air in the haze weather, and effectively improve the quality of the outdoor air fed into the room.

In addition, the purification module 226 can also be filtered by Hypa. Hypa is a high-efficiency filter paper that can filter 99% of fine particles in the air, ensuring that the air output by the fan module 220 is clean and avoiding secondary pollution.

In the fresh air device 200 of the present invention, a filter screen 224 and a purification device are installed, which can purify the fresh air entering the room, especially now that the air pollution is becoming more and more serious, the purified air is sent into the room to improve the quality of the indoor air, Reduce the harm of polluted air to the body.

Further, the purification module 226 and the fan module 220 are detachably arranged, and the purification module 226 is installed in the groove through a groove opened on the inner side of the air outlet 223 of the fan module 220 . When the purification module 226 is used for a period of time, it can be disassembled to clean or replace the purification device of the purification module 226, so as to ensure the quality of air purification. The grooves on the inner side of the air outlet 223 of the fan module 220 can facilitate the disassembly and installation of the purification module 226, which can be realized by the user without professional operation, which makes the purification device more popular. The thickness of the purification module 226 is relatively reasonable in the range of 20-40 mm, which can not only meet the air volume requirements, but also has a relatively good dust accumulation effect, so that the service cycle of the purification module 226 is longer and the user experience is better.

In some preferred embodiments, a PTC heater is provided between the purification module 226 and the outlet grill 225 for heating the air delivered into the room. When the air conditioner is heating, the PTC heater is used to preheat the air delivered to the room, which can further reduce the heat exchange amount of the heat exchanger 300 of the indoor unit 10 to the outdoor air, and can increase the number of pairs of the heat exchanger 300 of the indoor unit 10. The heat exchange efficiency of the indoor air makes the time for the indoor unit 10 to reach the preset heating temperature shorter and the temperature more stable.

In some other embodiments, the fresh air device 200 is arranged at one end of the outer casing 100, and is installed separately from the casing 100 of the indoor unit 10. The independently installed fresh air device 200 can be used for the existing household air conditioners. The indoor unit 10 is not modified or replaced, and the fresh air device 200 is directly installed outside, so as to realize the effect of changing the indoor fresh air. By adopting the above structure, not only the flexibility of the installation of the fresh air device 200 can be realized, the model of the original indoor unit 10 is not limited, but also the maintenance and maintenance of the fresh air device 200 are facilitated.

The fresh air device 200 in each of the above embodiments can operate independently of the indoor unit 10 for heating or cooling, and of course can also operate synchronously with the indoor unit 10 for heating and cooling.

The fresh air device 200 of the present invention may be installed inside the indoor unit 10, integrated with the indoor unit 10, or installed outside the indoor unit 10. Regardless of the installation state of any form, the cost of using the fresh air blower in the prior art can be greatly reduced, the noise is low, and the user experience is better.

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 fresh air air conditioner indoor unit, comprising: a casing, an air supply fan and a heat exchanger are arranged inside, and the top of the casing has an air inlet, and the lower part forms an air outlet; The fresh air device is arranged at one end of the casing, and includes an air intake module and a fan module communicated with the air intake module. The air intake module is communicated with the outdoor environment and is used to absorb the air of the outdoor environment. The fan module is communicated with the indoor environment through the air outlet set above it, and is used to discharge the outdoor air drawn by the air inlet module into the indoor environment; wherein The ratio between the distance between the air outlet and the air inlet and the length of the air outlet along the lateral direction of the casing is between 2:1 and 1:1; At least part of the air discharged from the fan module is sucked into the air inlet, so as to be discharged from the air supply port at the lower part of the casing after exchanging heat with the heat exchanger. 2. The indoor unit according to claim 1, wherein, An air inlet cavity is defined inside the air inlet module, and a pipeline connection part communicated with the air inlet cavity is provided, and the pipeline connection part is used for connecting a fresh air inlet pipe leading to the outdoor; The fan module includes a centrifugal fan and a volute arranged outside the centrifugal fan; the air inlet of the volute communicates with the air inlet cavity, and the air outlet faces the top of the casing, and the centrifugal fan It is configured to inhale the air from the outside of the air inlet chamber and discharge it from the air outlet of the volute. 3. The indoor unit according to claim 2, wherein, the air outlet and the air inlet are located in the same plane; and The air outlet is provided with an air outlet grille that is consistent with the air inlet grille of the air inlet of the casing, and the grille plate of the air outlet grille is inclined toward the direction of the air inlet. 4. The indoor unit according to claim 2, wherein, The centrifugal fan is also configured so that the ratio of its rotational speed to the rotational speed of the air blower is less than a preset value. 5. The indoor unit according to claim 2, wherein, The pipeline connection part is arranged at the lower and rear of the air intake module, and the fresh air intake pipe extends out of the casing along the rear side of the bottom of the casing together with the pipeline of the indoor unit. 6. The indoor unit according to claim 2, wherein, A filter screen is detachably installed on the air inlet side of the air inlet module close to the fan module, which is used to filter the air delivered to the room. 7. The indoor unit according to claim 3, wherein, A purification module is arranged on the inner side of the outlet grille, and the purification module adopts a strong electric field dielectric technology to purify the air delivered to the room. 8. The indoor unit according to claim 7, wherein, The purification module is installed in cooperation with a groove formed on the inner side of the air outlet of the fan module. 9. The indoor unit according to claim 8, wherein, A PTC heater is arranged between the purification module and the air outlet grille for heating the air delivered to the room. 10. The indoor unit according to any one of claims 1 to 9, wherein, The fresh air device operates independently of the indoor machine for heating or cooling.

Images