CN111780252A - A split type fresh air conditioner - Google Patents

Abstract

The invention discloses a split fresh air conditioner, which comprises an indoor air conditioner unit capable of being installed indoors and an outdoor air conditioner unit capable of being installed outdoors, wherein the indoor air conditioner unit comprises a shell, a control unit, an evaporator, a cross-flow fan and a flow dispersing pipe, wherein the evaporator, the cross-flow fan and the flow dispersing pipe are arranged in the shell, the evaporator is connected with the outdoor air conditioner unit through a refrigerant pipe, a fresh air through hole, a return air hole and an air outlet are formed in the shell, indoor air is sucked into the shell from the return air hole when the cross-flow fan works, the air sucked into the shell passes through the area where the evaporator is located and then is discharged from the air outlet, the fresh air through hole is connected with a fresh air system capable of sucking outdoor air, and one end of the flow dispersing pipe is connected with the fresh air through hole. The invention can introduce fresh air from the outdoor, ensure the freshness of indoor air, and simultaneously can heat or refrigerate the introduced fresh air and then introduce the fresh air into the indoor.

Description

A split type fresh air conditioner

technical field

The invention belongs to the technical field of air conditioners, and particularly relates to a split type fresh air conditioner.

Background technique

With the improvement of people's quality of life, people's requirements for air quality are getting higher and higher. Since people spend a considerable part of their time indoors, the impact of indoor air quality on human health is particularly important. Especially in areas with severe haze, people generally close doors and windows to prevent haze air from entering the room. After a period of time, although the quality of indoor air without haze air pollution is also very poor, if people stay in such an environment for a long time will cause harm to human health. With the deterioration of the air environment and people's emphasis on indoor air quality, the temperature adjustment of traditional air conditioners alone has become more and more unable to meet the needs of consumers for improving the indoor comfortable environment.

Split type air conditioners are favored by people as household air conditioners, but most split type air conditioners can only ensure the temperature and humidity of the indoor air, and cannot introduce safe and pollution-free fresh air into the room in real time, and cannot guarantee the cleanliness and freshness of the indoor air. When people stay in this closed environment for a long time, it is easy to cause symptoms such as lack of energy and fatigue due to lack of oxygen.

In order to solve the above problems, some air conditioners equipped with fresh air devices have appeared in the prior art, and the outdoor air is introduced into the room through the fresh air device. When the fresh air device operates independently, the fresh air introduced from the outside cannot be used for cooling or heating.

Therefore, it is very important to study a split type fresh air conditioner.

SUMMARY OF THE INVENTION

In view of this, the purpose of the present invention is to provide a split type fresh air air conditioner, which can introduce fresh air from outdoors to ensure the freshness of indoor air, and can heat or cool the introduced fresh air before entering the room.

The technical scheme that the present invention adopts for solving its technical problem is:

A split type fresh air conditioner, comprising an air conditioner indoor unit that can be installed indoors and an air conditioner outdoor unit that can be installed outdoors, wherein the air conditioner indoor unit includes a casing, a control unit, and an evaporator, a through-flow unit, and an evaporator arranged in the casing. A fan and a diffuser pipe, the evaporator is connected to the outdoor unit of the air conditioner through a refrigerant pipe, and the shell is provided with a fresh air vent, a return air port and an air outlet. The air is sucked into the casing from the return air outlet, and the air sucked into the casing passes through the area where the evaporator is located and then is discharged from the air outlet. The fresh air vent is connected to a fresh air system that can suck outdoor air. One end of the flow pipe is connected to the fresh air vent so that the inhaled outdoor air can be delivered to the space between the return air port and the evaporator through a diffuser.

Further, the fresh air system includes a fresh air damper, a fresh air purification module, a fresh air duct, and a wall-penetrating air cap. One end of the fresh air duct is connected to the fresh air vent, and the other end is connected to the through-wall. The wall-mounted hood is connected with a fresh air inlet, the fresh air damper is arranged in the fresh air duct to control the opening and closing of the fresh air duct, and the fresh air damper is connected with an adjustable The first driver of the size of the opening of the fresh air damper, the fresh air purification module is arranged in the fresh air duct, or in the fresh air vent, or in the diffuser pipe.

Further, the wall-passing hood includes a wall-passing pipe, a wind cap connected to one end of the wall-passing conduit, and a positioning flange capable of fixing the wall-passing conduit to the wall. One end is connected with the fresh air duct, the lower side of the air cap is provided with a grill, and the gap between the grill forms the fresh air inlet.

Further, the end of the fresh air duct connected to the fresh air vent is higher than the end of the fresh air duct connected to the through-wall hood.

Further, the fresh air purification module includes a filter and an ultraviolet lamp arranged at the fresh air vent.

Further, the diffuser pipe is located between the air return port and the evaporator and extends from one end of the casing to the other end of the casing, and a number of diffusers are evenly arranged on the diffuser pipe .

Further, the return air outlet is provided with a return air valve that can be opened and closed, and the return air valve is connected with a second driver that can adjust the size of the opening of the return air valve.

Further, the return air outlet is provided with a return air filter screen, and the return air filter screen is detachably connected to the housing.

Further, the air outlet is provided with an air direction adjusting plate, and the air direction adjusting plate is connected with a third driver that can drive the air outlet to rotate to adjust the air direction.

Further, a temperature sensor is provided in the housing, and the temperature sensor, the first driver and the second driver are all electrically connected to the control unit. The temperature sensor collects indoor temperature signals and converts the temperature signals into electrical signals. The signal is then transmitted to the control unit, and the control unit issues an instruction to adjust the opening size of the fresh air damper and the return air damper through the first driver and the second driver.

The beneficial effects of the present invention are:

1. The grille of the hood is facing down, which can effectively prevent rainwater from entering the fresh air duct; the fresh air duct is slightly inclined downward, which can prevent rainwater from flowing along the fresh air duct to the air conditioner indoor unit. The pre-filter set between the air ducts can effectively isolate dust, mosquitoes and other impurities from entering the fresh air duct; the through-wall hood can pass through the wall from indoors to connect with the outdoor atmosphere, and is fixed on the inner wall by the positioning flange, without the need for the outer wall. The installation of rain-proof louvers can reduce the difficulty of construction and increase the safety of construction.

2. The fresh air purification module is installed at the fresh air vent, which includes a primary filter, a HEPA filter and an ultraviolet lamp. The outdoor fresh air first filters out the dust and other impurities in the air through the pre-filter of the through-wall hood, and then The fresh air volume is adjusted through the fresh air damper, and the incoming fresh air passes through the primary filter and HEPA filter in turn, which can effectively filter pollutants such as smoke, dust and bacteria. Ensure the freshness and cleanliness of the fresh air, and finally enter the indoor unit of the air conditioner.

3. The diffuser pipe is sealed with the fresh air vent, located above the evaporator, and runs through the entire shell of the air conditioner indoor unit. The diffuser pipe is evenly distributed with several diffusers, and the fresh air is evenly distributed to the inner cavity of the shell through the diffuser. , which is beneficial to increase the fresh air intake area, conduct sufficient heat exchange with the evaporator, and improve the heat exchange efficiency.

4. The return air outlet is provided with a return air valve and a return air filter. The return air valve is arc-shaped, and the angle of the return air valve is adjusted by a stepper motor, thereby controlling the return air volume; the return air filter is set at the return air filter. Below the air damper, it is easy to clean and replace the return air filter later by using detachable installation methods such as card slot embedded installation or screw connection.

5. The air outlet is provided with a wind direction adjustment plate, which is controlled by a stepping motor to control the wind direction.

6. The fresh air and return air treated by the filter screen and ultraviolet lamp form mixed air in the cavity of the indoor unit. When the cross-flow fan is running, a low-pressure area is formed in front of it, forcing the high-temperature mixed air to flow through the evaporator for heat exchange. The mixed air cooled and dried by the evaporator is sucked in by the cross-flow fan and delivered to the room through the air outlet.

7. By adjusting the opening size of the fresh air valve and the return air valve, the adjustment function of fresh air, semi-fresh air or no fresh air can be achieved; when the difference between the room temperature and the temperature set by the user is large, the air conditioner needs to be cooled urgently. The adjustable fresh air damper is in the state of no fresh air. When the difference between the room temperature and the set temperature is small, the fresh air damper and the return air damper can be adjusted to control the fresh air and return air volume. This not only has a good cooling effect, but also introduces oxygen-rich air. At the same time, the energy loss is reduced; when the indoor air quality is poor and the temperature adjustment demand is not very high, the fresh air damper can be fully opened to enter the fresh air state, and the indoor air quality will be rapidly improved.

Description of drawings

Figure 1 is a perspective view of a split type fresh air conditioner;

Figure 2 is a front view of the air conditioner indoor unit after part of the casing is omitted;

Fig. 3 is a perspective view of the air conditioner indoor unit after part of the casing is omitted;

Fig. 4 is the structural schematic diagram of the part where the fresh air damper is located;

Fig. 5 is a perspective view of the split type fresh air conditioner after omitting part of the casing;

Fig. 6 is an enlarged view of the dotted circle portion in Fig. 2;

FIG. 7 is a schematic structural diagram of a fresh air purification module.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings.

Referring to FIGS. 1 to 7 , an embodiment of the present invention provides a split-type fresh air conditioner, which includes an air conditioner indoor unit 10 that can be installed indoors and an air conditioner outdoor unit 20 that can be installed outdoors. The air conditioner indoor unit 10 includes a housing 30. The control unit and the evaporator 50, the cross-flow fan 60 and the diffuser pipe 70 arranged in the casing 30, the evaporator 50 is connected to the air conditioner outdoor unit 20 through the refrigerant pipe 51, and the casing 30 is provided with a fresh air vent 31. The air return port 32 and the air outlet 33. When the cross-flow fan 60 is working, the indoor air is sucked into the housing 30 from the air return port 32, and the air sucked into the housing 30 passes through the area where the evaporator 50 is located and then is discharged from the air outlet 33. , the fresh air vent 31 is connected to a fresh air system capable of inhaling outdoor air, and one end of the diffuser pipe 70 is connected to the fresh air vent 31 so that the inhaled outdoor air can be transported to between the return air port 32 and the evaporator 50 through the diffuser pipe 70 Space.

Preferably, the fresh air system includes a fresh air damper 41, a fresh air purification module 42, a fresh air duct 43, and a through-wall hood 44. One end of the fresh air duct 43 is connected to the fresh air vent 31, and the other end is connected to the through-wall hood 44. A fresh air inlet 401 is provided on the wall-penetrating air cap 44, and a fresh air damper 41 is arranged in the fresh air duct 43 to control the opening and closing of the fresh air duct 43. A driver 90 , the fresh air purification module 42 is disposed in the fresh air duct 43 , or in the fresh air vent 31 , or in the diffuser duct 70 .

Further, the through-wall hood 44 includes a through-wall duct 442, a hood 443 connected to one end of the through-wall duct 442, and a positioning flange 441 capable of fixing the through-wall duct 442 to the wall, and the other end of the through-wall duct 442 Connected to the fresh air duct 43, the hood 443 is in the shape of a hemispherical shell 30, and the lower side of the hood 443 is provided with a grille. The fresh air duct 43 is slightly inclined downward, so that the end of the fresh air duct 43 connected to the fresh air vent 31 is higher than the end of the fresh air duct 43 connected to the through-wall hood 44 . The fresh air duct 43 and the through-wall hood 44 are connected by a positioning flange 441, and a pre-filter 432 is provided at the connection between the two. The first driver 90 is preferably a stepping motor, and the valve plate of the fresh air damper 41 is driven to swing by the stepping motor to adjust the opening size thereof, thereby adjusting the fresh air intake air volume.

Preferably, the fresh air purification module 42 includes a filter 421 and an ultraviolet lamp 423 disposed at the fresh air vent 31 . The filter 421 includes a primary filter and a HEPA filter installed at the fresh air vent 31 . The outdoor fresh air first passes through the pre-filter 432 to filter out dust and other impurities in the air, and then adjusts the fresh air volume through the fresh air damper 41. The incoming fresh air passes through the primary filter, the HEPA filter, and then again. The fresh air is sterilized and sterilized by the ultraviolet lamp 423, and finally enters the air conditioner indoor unit 10.

The diffuser pipe 70 is sealingly connected to the fresh air vent 31. The diffuser pipe 70 is located between the return air port 32 and the evaporator 50 and extends from one end of the casing 30 to the other end of the casing 30. The diffuser pipe 70 is evenly provided with There are several diffusers 71 , through which the air introduced from the outdoors is uniformly input into the space between the air return port 32 and the evaporator 50 . Optionally, the air return port 32 is located at the top of the housing 30 , and the diffuser 70 is located above the evaporator 50 .

Further, the return air outlet 32 is provided with a return air valve 321 that can be opened and closed, and the return air valve 321 is connected with a second driver that can adjust the opening size of the return air valve 321. The second driver is preferably arranged in the air-conditioned room. The stepper motor of the machine 10. The valve plate of the return air valve 321 is arc-shaped, and the angle of the valve plate of the return air valve 321 is adjusted by the second driver, thereby controlling the return air volume. The net 322 is disposed below the return air valve 321 , and the return air filter 322 is detachably connected to the housing 30 . For example, embedded installation through card slots or installation through screws.

The air outlet 33 is provided with an air direction adjusting plate 331, and the air direction adjusting plate 331 is connected with a third driver capable of driving it to rotate to adjust the air direction. The third driver is preferably a stepping motor.

The fresh air and return air treated by the filter screen and ultraviolet lamp form mixed air in the cavity of the indoor unit. When the cross-flow fan 60 is running, a low-pressure area is formed in front of it, forcing the mixed air with a higher temperature to flow through the evaporator 50. After heat exchange, the mixed air cooled and dried by the evaporator 50 is sucked by the cross-flow fan 60 and transported into the room through the air outlet 33 .

The housing 30 is provided with a temperature sensor 80. The temperature sensor 80, the first driver 90, and the second driver are all electrically connected to the control unit. The temperature sensor 80 collects indoor temperature signals, converts the temperature signals into electrical signals, and transmits them to the control unit. , the control unit sends an instruction to adjust the opening size of the fresh air damper 41 and the return air damper 321 through the first driver 90 and the second driver.

The present invention has the following advantages:

1. The grille of the air cap 443 is facing down, which can effectively prevent rainwater from entering the fresh air duct 43; the fresh air duct 43 is slightly inclined downward, which can prevent rainwater from flowing along the fresh air duct 43 to the air conditioner indoor unit 10, and the fresh air duct 43 The pre-filter 432 set between it and the through-wall hood 44 can effectively isolate impurities such as dust and mosquitoes from entering the fresh air duct 43; the through-wall hood 44 can pass through the wall from the room and be combined with the outdoor atmosphere. Lan 441 is fixed on the inner wall, and there is no need to install rain-proof louvers on the outer wall, which can reduce the difficulty of construction and increase the safety of construction.

2. The fresh air purification module 42 is installed at the fresh air vent 31, which includes a primary filter, a HEPA filter and an ultraviolet lamp. The outdoor fresh air first passes through the pre-filter 432 of the through-wall hood 44 to remove dust and other impurities in the air. Filter out, and then adjust the fresh air volume through the fresh air damper 41. The incoming fresh air passes through the primary filter and the HEPA filter in turn, which can effectively filter pollutants such as smoke, dust and bacteria, and then use the ultraviolet lamp 423. Sterilizing and sterilizing can ensure the freshness and cleanliness of the fresh air, and finally enter the indoor unit 10 of the air conditioner.

3. The diffuser pipe 70 is sealingly connected to the fresh air vent 31, is located above the evaporator 50, and runs through the entire housing 30 of the air conditioner indoor unit 10. The diffuser pipe 70 is evenly distributed with a number of diffusers 71, and the fresh air passes through the diffuser. The evaporators 71 are evenly distributed to the inner cavity of the casing 30, which is beneficial to increase the fresh air intake area, conduct sufficient heat exchange with the evaporator 50, and improve the heat exchange efficiency.

4. The return air outlet 32 is provided with a return air valve 321 and a return air filter screen 322. The return air valve 321 is arc-shaped, and the angle of the return air valve 321 is adjusted by a stepping motor, thereby controlling the return air volume; The filter screen 322 is arranged below the air return air valve 321, and can be easily cleaned and replaced later by means of a detachable installation method such as a slotted installation or a screw connection.

5. The air outlet 33 is provided with an air direction adjusting plate 331, and the air direction adjusting plate 331 is controlled by a stepping motor, thereby controlling the air direction.

6. The fresh air and return air processed by the filter screen and ultraviolet lamp form mixed air in the cavity of the indoor unit. When the cross-flow fan 60 is running, a low-pressure area is formed in front of it, forcing the high-temperature mixed air to flow through the evaporator 50 for heat exchange , the mixed air cooled and dried by the evaporator 50 is sucked by the cross-flow fan 60 and transported into the room through the air outlet 33 .

7. By adjusting the opening size of the fresh air valve 41 and the return air valve 321, the adjustment function of fresh air, semi-fresh air or no fresh air can be achieved; when the difference between the room temperature and the temperature set by the user is large, the air conditioner needs to be in urgent need of refrigeration. At this time, the fresh air damper 41 can be adjusted to be in a state of no fresh air. When the difference between the room temperature and the set temperature is small, the fresh air damper 41 and the return air damper 321 can be adjusted to control the amount of fresh air and return air. Oxygen-enriched fresh air is also introduced, which reduces energy loss at the same time; when the indoor air quality is poor and the temperature adjustment demand is not very high, the fresh air damper 41 can be fully opened to enter the fresh air state, and the indoor air quality will be rapidly improved.

The above are only the preferred embodiments of the present invention, as long as the technical solutions of the present invention are realized by basically the same means, they all fall within the protection scope of the present invention.

Claims (10)

1. A split type fresh air conditioner is characterized by comprising an indoor air conditioner (10) and an outdoor air conditioner (20), wherein the indoor air conditioner (10) can be installed indoors, the outdoor air conditioner (20) can be installed outdoors, the indoor air conditioner (10) comprises a shell (30), a control unit, an evaporator (50), a cross-flow fan (60) and a radiating pipe (70), the evaporator (50) is arranged in the shell (30) and connected with the outdoor air conditioner (20) through a refrigerant pipe (51), a fresh air port (31), a return air port (32) and an air outlet (33) are arranged on the shell (30), when the cross-flow fan (60) works, indoor air is sucked into the shell (30) from the return air port (32), the air sucked into the shell (30) passes through an area where the evaporator (50) is located and then is discharged from the air outlet (33), and the fresh air port (31) is connected with a fresh air system capable of sucking outdoor air, one end of the diffusing pipe (70) is connected with the fresh air port (31) so that the sucked outdoor air can be conveyed to a space between the air return port (32) and the evaporator (50) through the diffusing pipe (70).

2. The split fresh air conditioner according to claim 1, wherein the fresh air system comprises a fresh air damper (41), a fresh air purification module (42), a fresh air pipe (43), and a through-wall hood (44), one end of the fresh air pipe (43) is connected with the fresh air port (31), the other end is connected with the wall-penetrating type blast cap (44), a fresh air inlet (401) is arranged on the wall-through type blast cap (44), the fresh air valve (41) is arranged in the fresh air pipe (43) to control the opening and closing of the fresh air pipe (43), the fresh air valve (41) is connected with a first driver (90) which can adjust the opening size of the fresh air valve (41), fresh air purification module (42) set up in fresh air pipe (43) in, or set up in fresh air opening (31), or set up in diverging pipe (70) in.

3. The split type fresh air conditioner according to claim 2, wherein the wall-through type hood (44) comprises a wall-through pipe (442), a hood (443) connected to one end of the wall-through pipe (442), and a positioning flange (441) capable of fixedly mounting the wall-through pipe (442) to a wall, the other end of the wall-through pipe (442) is connected to the fresh air pipe (43), the lower side of the hood (443) is provided with a grating, and a gap of the grating forms the fresh air inlet (401).

4. A split fresh air conditioner according to claim 2, wherein the end of the fresh air duct (43) connected to the fresh air port (31) is higher than the end of the fresh air duct (43) connected to the wall-through hood (44).

5. The split fresh air conditioner according to claim 2, wherein the fresh air purification module (42) includes a filter (421) and an ultraviolet lamp (423) disposed at the fresh air port (31).

6. The split type fresh air conditioner according to claim 1, wherein the diffuser (70) is located between the air return opening (32) and the evaporator (50) and extends from one end of the casing (30) to the other end of the casing (30), and a plurality of diffusers (71) are uniformly arranged on the diffuser (70).

7. The split type fresh air conditioner as claimed in claim 2, wherein the return air inlet (32) is provided with a return air valve (321) capable of opening and closing the return air inlet, and the return air valve (321) is connected with a second driver capable of adjusting the opening size of the return air valve (321).

8. The split type fresh air conditioner as claimed in claim 1 or 7, wherein the return air inlet (32) is provided with a return air filter (322), and the return air filter (322) is detachably connected with the housing (30).

9. The split type fresh air conditioner according to claim 1, wherein the air outlet (33) is provided with a wind direction adjusting plate (331), and the wind direction adjusting plate (331) is connected with a third driver capable of driving the wind direction adjusting plate (331) to rotate so as to adjust the wind direction.

10. The split type fresh air conditioner according to claim 1, wherein a temperature sensor (80) is arranged in the casing (30), the temperature sensor (80), the first driver (90) and the second driver are electrically connected with the control unit, the temperature sensor (80) collects an indoor temperature signal, converts the temperature signal into an electric signal and transmits the electric signal to the control unit, and the control unit sends out an instruction to adjust the opening sizes of the fresh air valve (41) and the return air valve (321) through the first driver (90) and the second driver.

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