CN117329599A

CN117329599A - Variable frequency air conditioning device

Info

Publication number: CN117329599A
Application number: CN202311468009.0A
Authority: CN
Inventors: 鲁浩军; 李同玉; 刘勇军; 周铁荣; 鲁启发
Original assignee: Ningbo Aer Ventilation Equipment Co ltd
Current assignee: Ningbo Aer Ventilation Equipment Co ltd
Priority date: 2023-11-06
Filing date: 2023-11-06
Publication date: 2024-01-02

Abstract

The invention provides a variable frequency air conditioning device, which comprises a shell; the fresh air inlet is arranged on the shell and is used for enabling air in the first space to enter the shell; the fresh air outlet is arranged on the shell and is used for blowing out air entering the shell to the second space; the fresh air duct is communicated with the fresh air inlet and the fresh air outlet; the exhaust air inlet is used for enabling air in the second space to enter the shell; the exhaust air outlet is used for blowing out the air entering the shell into the first space; the exhaust air duct is communicated with the exhaust air inlet and the exhaust air outlet; the heat exchange unit is used for carrying out heat exchange on the air in the fresh air duct and the air in the exhaust air duct; a first intermediate separator; a second septum; the first middle partition plate and the second middle partition plate are sequentially arranged along the direction of fresh air flow, and the heat exchange unit is arranged between the first middle partition plate and the second middle partition plate.

Description

Variable frequency air conditioning device

Technical Field

The invention relates to the technical field of air conditioning equipment, in particular to a variable frequency air conditioning device.

Background

Fresh air machine in the present market includes fresh air wind way to indoor air supply, return air wind way and total heat exchange unit of airing exhaust to the outdoor, and wherein, total heat exchange unit includes total heat exchange core. The air in the fresh air passage and the return air passage utilizes the heat transfer and humidity transfer characteristics of the total heat exchange core body to exchange heat and humidity in the total heat exchange core body. When the indoor air temperature is higher and the humidity is higher; when the temperature of the outdoor air is low and the humidity is low, after the heat and the humidity of the outdoor air and the indoor air are exchanged in the total heat exchange core, the temperature and the humidity of the outdoor air are increased, and the outdoor air is conveyed into a room through a fresh air duct. When the indoor temperature is low and the humidity is low; when the outdoor temperature is higher and the humidity is higher, after the heat and the humidity of the outdoor air and the indoor air are exchanged in the total heat exchange core, the temperature and the humidity of the outdoor air are reduced, and the outdoor air is conveyed through a fresh air duct and then blown into a room. Therefore, the fresh air machine can improve the external fresh air indoors and provide fresh air with moderate temperature and humidity indoors, and meanwhile, the purpose of energy conservation is achieved.

The fresh air machine in the prior art generally comprises a fresh air only function, namely, the fresh air machine is only used for introducing outdoor fresh air into a room through the total heat exchange core body, meanwhile, indoor polluted air is led out of the room through the total heat exchange core body, and the outdoor fresh air and the indoor polluted air are subjected to temperature and humidity exchange, so that the fresh air machine is single in function.

In addition, most of the fresh air fans on the market at present perform fixed-frequency dehumidification, and the dehumidification capacity is limited, so that the fresh air fans are basically used for performing internal circulation dehumidification when dehumidification operation is needed, and the fresh air dehumidification state can be operated in a very small number of cases, because the fresh air is difficult to quickly descend when the fresh air is introduced for dehumidification, and the fresh air can be stabilized at a stable and proper humidity value. Based on this premise, the dehumidification module needs to have enough air quantity at the same time, meanwhile, because the running frequency of the compressor for constant-frequency dehumidification is fixed, enough air quantity is needed to timely change the capacity of the dehumidification module, the ventilation quantity of indoor air is needed to be increased, the flange at the exhaust inlet is needed to be large in the exhaust air duct, otherwise, the air quantity is insufficient, if the diameter of the flange is small, the air speed at the exhaust inlet is large, and the noise is caused.

At this time, the insufficient air quantity can bring about shutdown protection of the compressor due to insufficient heat exchange quantity of the dehumidification module

In the prior art, the arrangement of the inner space of the shell influences the overall size and function expansion of the fresh air fan, so the application provides a variable-frequency air conditioning device with compact arrangement and diversified function expansion of an air conditioner in the shell.

Disclosure of Invention

The present invention aims to solve at least one of the technical problems existing in the prior art.

Therefore, an object of the present invention is to provide a variable frequency air conditioner that is miniaturized in the whole structure and improves the diversity of the product functions while ensuring the fresh air function.

In order to achieve the above object, an embodiment of the present invention provides a variable frequency air conditioning apparatus including:

a housing;

the fresh air inlet is arranged on the shell and is used for enabling air in the first space to enter the shell;

the fresh air outlet is arranged on the shell and is used for blowing out air entering the shell to the second space;

the fresh air duct is communicated with the fresh air inlet and the fresh air outlet;

the exhaust air inlet is arranged on the shell and is used for enabling air in the second space to enter the shell;

the exhaust air outlet is arranged on the shell and is used for blowing out the air entering the shell to the first space;

the exhaust air duct is communicated with the exhaust air inlet and the exhaust air outlet;

the heat exchange unit is arranged in the shell and used for carrying out heat exchange on the air in the fresh air duct and the air in the air exhaust duct;

The environment parameter detection unit is used for detecting temperature and/or humidity information of the environment and outputting first environment information;

the variable frequency controller is in communication connection with the environment parameter detection unit and is used for receiving the first environment information and outputting a first control signal;

the compressor is arranged in the shell and is used for receiving the first control signal and outputting a first rotating speed;

the first middle partition plate is arranged in the shell; a second middle baffle plate arranged in the shell; the first middle partition plate and the second middle partition plate are sequentially arranged along the direction of fresh air flow, and the heat exchange unit is arranged between the first middle partition plate and the second middle partition plate.

In some embodiments, a first air outlet is formed on the first middle partition plate, the first air outlet is communicated with the air exhaust air outlet, and the first air outlet is opposite to the air exhaust air outlet.

In some embodiments, a first air inlet notch is formed on the first middle partition plate, the first air inlet notch is communicated with the fresh air inlet, and the first air inlet notch is opposite to the fresh air inlet.

In some embodiments, an inner circulation air port is formed on the second middle partition plate, the inner circulation air port is communicated with the exhaust air inlet, and the inner circulation air port is arranged opposite to the exhaust air inlet.

In some embodiments, a second air outlet is formed on the second middle partition, the second air outlet is communicated with the fresh air outlet, and the second air outlet is opposite to the fresh air outlet.

In some embodiments, the fresh air inlet, the first air inlet notch, the heat exchange unit, the second air outlet, and the space communicated between the fresh air outlet form the fresh air duct.

In some embodiments, the exhaust air inlet, the internal circulation air inlet, the heat exchange unit, the first air outlet and the space communicated between the exhaust air outlets form the exhaust air duct.

In some embodiments, further comprising:

the air flow dividing plate is provided with a plurality of air flow dividing grooves,

the air flow separation plate is arranged in the shell, one end of the air flow separation plate is connected between the air exhaust inlet and the fresh air outlet, the other end of the air flow separation plate is connected with the second middle partition plate, and the air flow separation plate, the second middle partition plate and the heat exchange unit separate the space of the shell to form a first air channel, a second air channel and a third air channel;

wherein the first air duct is formed as a part of the fresh air duct;

Wherein the third air duct is formed as a part of the exhaust air duct.

In some embodiments, further comprising:

the third middle partition plate, third middle partition plate one end connect in between the new trend air intake with the air outlet of airing exhaust, the other end connect in first middle partition plate, third middle partition plate the second middle partition plate with form the fan installation cavity between the casing.

In some embodiments, a fresh air fan is disposed in the first air duct, and is configured to drive air entering from the fresh air inlet to blow out from the fresh air outlet after passing through the heat exchange unit;

and the exhaust fan is arranged in the fan installation cavity and is used for driving air entering from the exhaust air inlet to blow out from the exhaust air outlet after passing through the heat exchange unit.

The application provides an air conditioner adjusting device through be equipped with first division board and second division board in proper order inside the casing along fresh air flow direction (along the length direction of casing promptly), forms the installation department between first division board and the second division board for install the heat exchange unit, and the both ends butt of heat exchange unit is on the lateral wall of casing, has provided the utilization ratio of casing inner space.

Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.

Drawings

The foregoing and/or additional aspects and advantages of the invention will become apparent and may be better understood from the following description of embodiments taken in conjunction with the accompanying drawings in which:

fig. 1 is a schematic diagram of the overall structure of a variable frequency air conditioning apparatus according to an embodiment of the present invention;

FIG. 2 is a top view of the overall structure of a variable frequency air conditioner according to one embodiment of the present invention;

FIG. 3 is a schematic diagram showing the internal structure of the frequency conversion air conditioner according to one embodiment of the present invention;

fig. 4 is a schematic structural view of a first intermediate partition of a variable frequency air conditioning apparatus according to one embodiment of the present invention;

FIG. 5 is a schematic view of a second septum of a variable frequency air conditioning device according to one embodiment of the present invention;

FIG. 6 is a schematic view of a fresh air duct in the overall structure of a variable frequency air conditioner according to an embodiment of the present invention;

FIG. 7 is a schematic view showing the structure of an exhaust duct in the overall structure of a variable frequency air conditioner according to an embodiment of the present invention;

FIG. 8 is a schematic diagram showing the internal structure of a frequency conversion air conditioner according to an embodiment of the present invention;

FIG. 9 is a schematic diagram showing the internal structure of the frequency-variable air conditioner according to one embodiment of the present invention;

FIG. 10 is a schematic diagram showing the internal structure of a frequency conversion air conditioner according to an embodiment of the present invention;

FIG. 11 is a schematic structural view of a dehumidifying assembly of a variable frequency air-conditioning apparatus according to an embodiment of the present invention;

fig. 12 is a control logic diagram of control mode switching of the variable frequency air conditioning device according to one embodiment of the present invention.

Reference numerals:

a variable frequency air conditioning device 100;

a housing 110; a top plate 111; a bottom plate 112; a left side plate 113; a right side plate 114; a first side plate 115; a second side plate 116;

a first intermediate partition 117; a first outlet 1171; a first air inlet gap 1172;

a second septum 118; a second air outlet 1181;

a third intermediate partition 119;

fresh air duct 120; a fresh air inlet 121; fresh air outlet 122; fresh air door 123; the fresh air door air path switching plate 1231; a fresh air damper motor 1232; a fresh air fan 124; a UV ultraviolet sterilization module 125; a negative ion module 126;

An airflow dividing plate 127; a first airflow divider 1271; a second airflow splitter plate 1272; a third air flow divider 1273;

an exhaust duct 130; an exhaust air inlet 131; an exhaust outlet 132; an exhaust fan 133; a switching plate 1331 for an exhaust fan; a motor 1332 for an exhaust fan;

a heat exchange unit 140; fresh air primary/medium efficiency filter screen 141; an exhaust primary/secondary filter screen 142; a primary high-efficiency composite filter screen 143; fresh air suction port 1401; a fresh air outlet 1221402; an exhaust air suction port 1403; an exhaust outlet 1404 for exhaust;

an inner circulation duct 150; an inner circulation tuyere 151; an internal circulation damper 152;

fresh air duct 161;

and an exhaust air path 162.

A dehumidification assembly 170; a compressor 171, an evaporator 172, a condenser 173, a water pan 174; mounting plate 175

A component block 176; mounting base plate 1761; column 1762; a cross beam 1763; and a shock absorbing member 177.

An environmental parameter detection unit 180;

a variable frequency controller 190.

Detailed Description

The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

In the description of the present invention, it should be understood that the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, merely to facilitate describing the present invention and simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention.

The terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present invention, unless otherwise indicated, the meaning of "a plurality" is two or more.

In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.

The air conditioner of the present invention is a device capable of adjusting the temperature, humidity, cleanliness, or the like of air. The embodiment of the present invention will be described with reference to a variable frequency air conditioner capable of exchanging heat between indoor and outdoor air. The "installation state of the variable frequency air conditioner" refers to a state in which the variable frequency air conditioner is installed between a roof and a ceiling to be able to operate normally.

If the variable frequency air conditioner is installed between the roof and the ceiling of a building, the vertical direction is understood to be a direction perpendicular to the roof and the ceiling, and the horizontal direction is understood to be a direction parallel to the roof and the ceiling.

The present invention will be described in detail below with reference to the accompanying drawings.

As shown in fig. 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11 and 12.

[ working principle of variable frequency and variable frequency air conditioner ]

The variable frequency air conditioning device 100 of the present application includes an environmental parameter detection unit 180, configured to detect temperature and/or humidity information of an environment, and output first environmental information; the variable frequency controller 190 is communicatively connected to the environmental parameter detecting unit 180, and is configured to receive the first environmental information and output a first control signal; the compressor 171 is disposed in the housing 110, and is configured to receive the first control signal and output a first rotation speed.

Specifically, the compressor 171 is mainly composed of a motor, a rotor, a compressor housing, a refrigerant, and the like. The compressor 171 of the variable frequency air conditioner adjusting device adopts a variable frequency technology, and the working principle is that the working state of the compressor is changed by adjusting the running speed of a motor, so that the requirements of refrigeration and heating are realized. Specifically, the environmental parameter detecting unit 180 includes a series of sensors, such as a temperature sensor and a humidity sensor, for detecting information of temperature, humidity, etc. of the air, and outputting the temperature and/or humidity information to the first environmental information; the variable frequency controller 190 receives the first environmental information and processes the first environmental information to generate a first control signal; the compressor 171 receives the first control signal to automatically adjust the speed of operation to achieve the set temperature and humidity requirements.

For example, when the load becomes large, the variable frequency air conditioner can adjust the operation frequency of the compressor 171 to reduce the air volume demand, and at this time, even if the air volume is unchanged, the heat exchange amount and the air volume demand are reduced by reducing the frequency of the compressor 171, thereby reducing the dehumidification amount and not bringing about shutdown protection of the compressor 171.

Accordingly, the variable frequency air conditioner 100 has the following features, firstly, the variable dehumidification capacity is controlled by controlling the compressor frequency with respect to the fixed frequency; secondly, when the variable frequency operation, can not need to increase the import size of airing exhaust air inlet and new trend air inlet, can not appear shutting down moreover, the advantage is that import size does not increase and is convenient for install, can reduce the load through reducing the frequency moreover, reduces the requirement to circulating air volume, and then reduces the requirement of flange diameter, reaches the purpose of being convenient for installation and in-service use non-shutting down operation.

For example, the variable frequency air conditioning device has an adaptive dehumidification capability, performs a nominal intermediate capability under the condition of both noise and dehumidification amount, such as high-efficiency dehumidification is required under specific conditions, and can be operated at high frequency when dehumidification is fast, and the dehumidification capability is increased from 1 liter per hour to 1.5 liters per hour at this time, but the noise is relatively high, but in this scenario, the dehumidification capability can be operated within a certain range, and the operation range of the machine is increased.

[ construction of mounting space ]

The variable frequency air conditioning device 100 of the present application may be installed at a roof of a building or in a wall or basement. The following is an exemplary description of the manner in which the installation is at the roof of a building.

The variable frequency air conditioning device 100 of the present embodiment transfers air of one space to the other space by communicating two independent spaces. The two independent spaces may be two independent indoor spaces, or an indoor space and an outdoor space, or even different areas of a certain space. The variable frequency air conditioning device 100 of the present embodiment may be installed in the first space or the second space. The first space and the second space are two separated independent spaces, for example, separated by a wall, wherein the first space is called an indoor space, and is called indoor for short, and the second space is called an outdoor space, and is called outdoor. The variable frequency air conditioning apparatus 100 may suck air in any one of the two spaces and then blow the air to any one of the two spaces or blow the air to both spaces at the same time.

In the embodiment of the present application, the variable frequency air conditioning device 100 is installed in a first space, i.e., indoor, and is connected to a second space, i.e., outdoor, for introducing fresh air into the indoor.

[ Forming of complete machine ]

As shown in fig. 1 and 2, the variable frequency air conditioning apparatus 100 includes: the shell 110 forming the outward appearance, the new trend air intake 121 of formation on shell 110, new trend air outlet 122, the air intake 131 of airing exhaust, the air outlet 132 of airing exhaust of formation on shell 110, wherein, new trend air intake 121 and air outlet 132 are located the same side of shell 110, new trend air outlet 122 and air intake 131 are located the same side of shell 110 to new trend air intake 121 and new trend air outlet 122 are approximately diagonal arrangement, and air intake 131 and air outlet 132 of airing exhaust are approximately diagonal distribution.

As shown in fig. 1 and 2, in order to communicate the inside and the outside of the housing 110 through the pipe, the housing 110 is installed with the pipe and the connector, so that the inside and the outside of the housing 110 are communicated through the connector and the pipe, wherein the pipe is used for communicating the fresh air inlet 121, the fresh air outlet 122, the air exhaust inlet 131 and the air exhaust outlet 132.

In order to be suitable for integrally mounting the variable frequency air conditioning device 100 on a roof, a hook is mounted on the housing 110, and the hook is combined with a boom to integrally mount the air conditioning device on the roof.

The disassembly and repair after the whole machine is convenient, on the premise of not damaging the original mounting structure, the disassembly and repair of all parts inside the shell 110 are performed, the upper side surface of the shell 110 is also provided with a repair opening, the repair opening is provided with a repair cover, and the repair cover can rotationally cover or open the repair opening.

In addition to the above-described structure formed outside the housing 110 and on the housing 110, a fresh air duct 120, an exhaust air duct 130, an internal circulation air duct 150, a fresh air door 123, an internal circulation air door 151, a fresh air fan 124, an exhaust air fan 133, a compressor 171, an evaporator 172, a condenser 173, and a heat exchange unit 130 are provided in the housing 110.

[ Shell Structure ]

The housing 110 forms an outer contour of the variable frequency air conditioning apparatus 100 and has a rectangular parallelepiped box shape with a hollow interior.

The housing 110 includes: top plate 111, bottom plate 112 and four curb plates, top plate 111 sets up with bottom plate 112 relatively, and four curb plates are pairwise opposite to each other to be set up.

In this embodiment, the variable frequency air conditioning device 100 is installed at the top of the first inner space, i.e. at the top of the room, and the bottom plate 112 faces the space where the indoor user is located, i.e. the side facing the reader; the top panel 111 faces the side facing away from the room in which the indoor user is located, i.e. the side facing away from the reader, towards the wall at the top of the room. After the variable frequency air-conditioning device 100 is hung on the indoor ceiling by the hanging hook, the side of the user looking at the roof is the floor 112, and the side of the variable frequency air-conditioning device 100 facing the indoor ceiling is the ceiling 111.

As shown in fig. 1, the upper, lower, left, and right surfaces of the housing 110 are a first side plate 115, a second side plate 116, a left side plate 113, and a right side plate 114, respectively. The left side plate 113 and the right side plate 114 are disposed opposite to each other, and the first side plate 115 and the second side plate 116 are disposed opposite to each other.

That is, when the reader faces fig. 1, the left side plate 113 is located on the left side of the reader, the right side plate 114 is located on the right side of the reader, the front side of the reader is the first side plate 115, and the opposite side of the first side plate 115 is the second side plate 116.

The top plate 111, the bottom plate 112, the first side plate 115, the second side plate 116, the first front plate, and the second front plate enclose a housing 110 of the variable frequency air conditioning device 100.

[ internal Structure of the complete machine ]

As shown in fig. 1, a fresh air inlet 121 is disposed on the housing 110, and is configured to enable air in the first space to enter the housing 110;

a fresh air outlet 122 provided on the housing 110 for blowing out air entering the housing 110 into the second space;

the fresh air duct 120 is communicated with a fresh air inlet 121 and a fresh air outlet 122;

an exhaust air inlet 131, which is arranged on the shell 110 and is used for enabling the air in the second space to enter the shell 110;

an exhaust outlet 132 provided on the housing 110 for blowing out air entering the housing 110 into the first space;

an exhaust air duct 130 communicating the exhaust air inlet 131 and the exhaust air outlet 132; the fresh air duct 120 and the exhaust air duct 130 are independent of each other.

The heat exchange unit 130 is arranged in the shell 110 and is used for carrying out heat exchange on the air in the fresh air duct 120 and the air exhaust duct 130;

a first intermediate partition 117 provided in the housing 110; a second septum 118 disposed within the housing; the first and second intermediate separators 117 and 118 are disposed in this order along the direction of the fresh air flow, and a heat exchange unit 140 is installed between the first and second intermediate separators 117 and 118.

Wherein, the two ends of the first middle partition 117 are respectively abutted against the first side plate 115 and the second side plate 116 of the shell, and the two ends of the second middle partition 118 are respectively abutted against the first side plate 115 and the second side plate 116 of the shell, so that the second middle partition 117 and the second middle partition 118 divide the shell into three independent installation spaces.

By arranging the first middle partition 117 and the second middle partition 118, the interior of the shell is divided into three independent installation spaces along the airflow direction, the first installation space is communicated with the fresh air inlet 121 and the exhaust air outlet 132, the second installation space is used for installing the heat exchange unit 140, the third space is divided into two independent air channels, the first air channel is a part of the fresh air channel 120 and is used for installing the dehumidifying component 170, the UV sterilizing module 125, the anion module 126 and other purifying dehumidifying components 170, the third air channel is a part of the exhaust air channel 130 and is used for forming an air channel communicated with the exhaust air inlet 131.

The first installation space, the second installation space and the third installation space are sequentially arranged side by side along the air flow direction of the fresh air.

Specifically, a portion of the first middle partition 117 located on the exhaust duct 130 is formed with a first air outlet 1171, the first air outlet 1171 is communicated with the exhaust air outlet 132, and the first air outlet 1171 is disposed opposite to the exhaust air outlet 132. An air outlet grille is also arranged on the first air outlet 1171 and is used for preventing external sundries from entering and avoiding affecting the operation of the machine.

Specifically, a portion of the first middle partition 117 located on the fresh air duct 120 is formed with a first air inlet notch 1172, the first air inlet notch 1172 is communicated with the fresh air inlet 121, and the first air inlet notch 1172 is opposite to the fresh air inlet 121.

Specifically, an inner circulation air port 151 is formed on a portion of the second partition 118 located on the air exhaust duct 130, the second circulation air port 151 is communicated with the air exhaust air inlet 131, and the inner circulation air port 151 is disposed opposite to the air exhaust air inlet 131.

Specifically, a portion of the second partition 118 located on the fresh air duct 120 is formed with a second air outlet 1181, the second air outlet 1181 is communicated with the fresh air outlet 122, and the second air outlet 1181 is opposite to the fresh air outlet 122.

Thus, the spaces communicated between the fresh air inlet 121, the first air inlet gap 1172, the heat exchange unit 140, the second air outlet 1181, and the fresh air outlet 122 form the fresh air duct 120.

Thus, the spaces communicating between the exhaust air inlet 131, the inner circulation air inlet 151, the heat exchange unit 140, the first air outlet 1171, and the exhaust air outlet 132 form the exhaust air duct 130.

In order to isolate the fresh air from the indoor polluted air, the air blown into the room is outdoor fresh air, and an airflow separation plate 127 is further arranged in the third installation space.

The airflow separation plate 127 is arranged in the shell 110, one end of the airflow separation plate 127 is connected between the exhaust air inlet 131 and the fresh air outlet 122122, the other end of the airflow separation plate 127 is connected to the second middle partition plate 118, and the airflow separation plate 127, the second middle partition plate 118 and the heat exchange unit 140 separate the space of the shell 110 to form a first air channel, a second air channel and a third air channel;

thus, the first duct is formed as part of the fresh air duct 120;

thus, the third duct is formed as a part of the exhaust duct 13.

In order to isolate the fresh air at the fresh air inlet 121 and the exhaust air outlet 131 from the indoor polluted air, the exhausted polluted air does not influence the entry of the fresh air, and a third middle partition plate 119 is further arranged in the first space.

One end of the third middle partition plate 119 is connected between the fresh air inlet 121 and the air exhaust outlet 132, the other end of the third middle partition plate 119 is connected to the first middle partition plate 117, and a fan installation cavity is formed among the third middle partition plate 119, the first middle partition plate 117 and the shell 110.

Further, in order to drive the fresh air and the indoor polluted air to blow out through the fresh air duct 120 and the exhaust air duct 130 respectively, the fresh air duct 120 is internally provided with a fresh air fan 124, and the exhaust air duct 130 is internally provided with an exhaust air fan 133, wherein the fresh air fan 124 and the exhaust air fan 133 are EC direct-current fans.

The fresh air fan 124 is disposed in the first air channel, and is configured to drive air entering through the fresh air inlet 121 to blow out from the fresh air outlet 122 after passing through the heat exchange unit 140;

the exhaust fan 133 is disposed in the fan installation cavity, and is configured to drive air entering through the exhaust air inlet 131 to blow out from the exhaust air outlet 132 after passing through the heat exchange unit 140.

Meanwhile, in order to prevent external fresh air from being introduced into the room or when the air in the room space needs to be conditioned, an internal circulation duct 150 is provided inside the apparatus.

The internal circulation air duct 150 is communicated with the exhaust air inlet 131 and the fresh air outlet 122, and an internal circulation air inlet 151 is arranged in the internal circulation air duct 150.

Wherein, the air outlet side of the fresh air inlet 121 is provided with a fresh air door 123; the fresh air outlet 122 is provided with a fresh air fan 124.

Wherein, the inner circulation air duct 150 is internally provided with an inner circulation air door 151, and the inner circulation air door 152 is arranged at the inner circulation air opening 151.

Wherein, fresh air damper 123 and inner circulation damper 151 include wind path switching plate and motor that drives the rotation of wind path switching plate.

[ construction of internal circulation air duct ]

The internal circulation duct 150 includes a first duct, a second duct, and a third duct, wherein the first duct is a portion of the fresh air duct 120, and the third duct is a portion of the exhaust duct 130.

Specifically, the internal circulation duct 150 is partitioned by the second partition 118, the airflow partition 127, the heat exchange unit 140, and the housing 110.

Wherein, the second middle partition 118 is disposed in the housing 110, and the second middle partition 118 includes a first partition disposed on the fresh air duct 120 and a second partition disposed on the exhaust air duct 162, and an inner circulation air port 151 is formed on the first partition, and the inner circulation air port 151 is communicated with the exhaust air inlet 131.

The second partition plate 118 is formed with a second air outlet 1181 communicated with the fresh air duct 120, and the second air outlet 1181 is communicated with the fresh air outlet 122.

Wherein one end of the air flow separation plate 127 is connected between the exhaust air inlet 131 and the fresh air outlet 122, and the other end is connected to the second middle partition plate 118, wherein the plane of the air flow separation plate 127 in the height direction is higher than the plane of the air flow separation plate 118 in the direction.

Wherein the air flow separation plate 127, the housing 110, and the first separation plate form a first air duct; the air flow separation plate 127, the shell 110 and the second separation plate form a third air channel; two air channels are formed between the second middle partition plate and the heat exchange unit 130; the first air channel, the second air channel and the third air channel are sequentially communicated to form an internal circulation air channel 150; the first air duct is used for communicating the second air outlet 1181 with the fresh air outlet 122, and the third air duct is used for communicating the exhaust air inlet 131 with the internal circulation air inlet 151.

Because the first air duct has a larger spatial dimension than the third air duct in that the dehumidifying assembly 170, the UV sterilizing module 125, and the negative ion module 126 for adjusting the air conditioning process are installed therein.

[ Structure of airflow separation plate ]

One end of the airflow partition plate 127 is connected between the exhaust air inlet 131 and the fresh air outlet 122; the first and second air channels are formed between both sides of the air flow separation plate 127 and the first and second side plates 115 and 116 of the housing 110.

The airflow separation plate 127 includes a first airflow separation plate 1271, a second airflow separation plate 1272, and a third airflow separation plate 1273 that are sequentially connected, where the first airflow separation plate 1271 is connected to a side of the housing 110 near the exhaust air inlet, the third airflow separation plate 1273 is connected to the second partition plate, and the second airflow separation plate 1272 is connected to the first airflow separation plate 1271 and the third airflow separation plate 1273.

[ first air duct Structure ]

The first air duct is communicated with the fresh air outlet 122, and air in the shell 110 is blown out from the fresh air outlet through the first air duct.

The first air duct is enclosed by an airflow divider 127, a second divider, and a housing 110.

[ third air duct Venturi Structure ]

The third duct is a part of the exhaust duct 130, and is enclosed by the airflow separation plate 127, the second middle partition 118, and the housing 110.

Specifically, the other end of the airflow divider 127 is connected to the second middle partition 118, and includes a first airflow divider 1271, a second airflow divider 1272, and a third airflow divider 1273 that are sequentially connected between the second middle partition 118 and the housing 110, the first airflow divider 1271 is connected to a side of the housing 110 near the exhaust air inlet, the third airflow divider 1273 is connected to the second middle partition, and the second airflow divider 1272 is connected to the first airflow divider 1271 and the third airflow divider 1273.

Wherein, the first airflow separation plate 1271 and one side of the housing 110 located at the exhaust air inlet 131 form an acute angle; the third air flow separation plate 1273 forms an acute angle with the side of the second middle partition 118 located at the inner circulation tuyere 151; the second air flow divider 1272 is parallel to the side walls of the housing 110.

Thus, a third air channel is formed between the first air flow separation plate 1271, the second air flow separation plate 1272, the third air flow separation plate 1273, the second middle partition plate 118 and the housing 110, and the third air channel is a venturi structure with a middle narrowing and two wider ends.

The space size of the first air channel is larger than that of the third air channel. The first air duct may be used to install components occupying a large space of the compressor 171, the heat exchanger, and the like.

The housing 110 further includes a dehumidifying component 170, the dehumidifying component 170 is disposed in the first air duct, and the first efficient composite filter screen 143 is installed at the mounting opening of the filtering component. The dehumidification assembly 170 functions when the variable frequency air conditioning apparatus 100 needs to turn on the dehumidification function. When the indoor air is filtered through the internal circulation duct 150, the primary high-efficiency composite filter screen 143 functions.

[ Heat exchange Unit Structure ]

The heat exchange unit 130 may be a parallelepiped structure, or may be a cube structure, etc., and the heat exchange unit 130 provided in this embodiment of the present application adopts a parallelepiped structure, including a top surface, a bottom surface, and a fresh air windward surface, a fresh air-out surface, an air-exhaust windward surface, and an air-exhaust air-out surface that are parallel to each other and connect the top surface and the bottom surface.

The heat exchange unit 130 is fixed to the top plate 111 of the housing 110 through a top surface, and fixed to the bottom plate 112 of the housing 110 through a bottom surface. Connectors are provided between the top surface and the top plate 111, and between the bottom surface and the bottom plate 112.

After the heat exchange unit 130 is installed, the second air duct is formed between the fresh air outlet surface of the heat exchange unit 130 and the second partition.

In the embodiment of the present application, the heat exchange unit 130 is disposed in the housing 110 along a direction intersecting the fresh air duct 120 and the exhaust air duct 130. The heat exchange unit 130 has a strip-shaped parallelepiped structure, two ends of which are flat, and a first end of which is parallel to and abuts against the first side plate 115. The second end is parallel to and abuts the second side plate 116.

Specifically, the heat exchange unit 130 is installed in the housing 110 at a side near the fresh air inlet 121 and at the same time at a side near the exhaust air outlet 132.

Specifically, the heat exchange unit 130 includes a fresh air primary/secondary filter screen 141, a graphene water-washing core, and an exhaust primary/secondary filter screen 142, where the graphene water-washing core is a body of the heat exchange unit 130 and is of a parallelepiped structure, the fresh air primary/secondary filter screen 141 is disposed on a fresh air windward surface of the graphene water-washing core, and the exhaust primary/secondary filter screen 142 is disposed on an exhaust windward surface of the graphene water-washing core.

In this embodiment, the body of the heat exchange unit 130 is a graphene water-washing core body, which is formed by overlapping a plurality of heat transfer plates, so as to form mutually independent air paths, wherein the independent air paths comprise an outdoor fresh air entering through a fresh air inlet 121 and a fresh air path 161 flowing in through a fresh air duct 120, and an indoor air exhaust air path 162 flowing in through an air exhaust air duct 130 and entering through an air exhaust air inlet 131. The fresh air duct 161 intersects with the exhaust air duct 162 and is independent of each other.

When outdoor fresh air and indoor exhaust air cross-flow through the heat exchange unit 130, only water vapor molecules with smaller particle sizes can pass through due to small gaps between air paths, and other harmful gas or peculiar smell gas molecules with larger particle sizes can not pass through, so that the exchange of temperature and humidity is realized.

[ second air duct ]

The heat exchange unit 130 has a parallelepiped structure, and includes a top surface, a bottom surface, a fresh air inlet surface, a fresh air outlet surface, an air exhaust inlet surface, and an air exhaust outlet surface, which are parallel to each other;

a second air duct is formed between the fresh air outlet face and the second partition 118.

[ dehumidification Assembly ]

The first air duct is internally provided with the dehumidifying component 170, that is, the dehumidifying component 170 is installed at the upstream side of the fresh air outlet 122, and the fresh air is blown to the dehumidifying component 170 after heat and humidity are exchanged by the heat exchange unit.

The dehumidification assembly 170 includes a mounting plate 175, a compressor 171, an evaporator 172, a condenser 173 and a drip tray 174,

the compressor 171 is disposed on the mounting plate 175, and the evaporator 172 and condenser 173 are disposed above the water pan 174;

the compressor 171 is connected to the condenser 173 through a first refrigerant pipe; the condenser 173 is connected with the evaporator 172 through a second refrigerant pipe; the evaporator 172 is connected to the compressor 171 through a third refrigerant pipe.

The evaporator 172 and the condenser 173 are arranged in parallel so that air is blown out through the fresh air outlet 122 via the evaporator 172 and the condenser 173 in sequence.

The dehumidification assembly 170 further includes an assembly frame 176, the assembly frame 176 including a mounting base 17611, and a plurality of posts 1762, a plurality of cross beams 1763 connecting the posts 1762 upward along a vertical mounting base 1761, the plurality of posts 1762, and the plurality of cross beams 1763 forming the assembly frame 176.

The bottom of the compressor 171 is fixedly provided with a mounting plate 175, the mounting plate 175 is connected to a mounting base plate 1761 by at least two elastic shock absorbing members 177, the mounting plate 175 is fixedly connected to the mounting base plate 1761, wherein the number of the mounting plates 175 is two.

In order to facilitate the maintenance of the dehumidifying assembly 170, the dehumidifying assembly 170 may be integrally drawn out of the first air duct or mounted on the first air duct.

[ construction of flow paths ]

In this embodiment, the body of the heat exchange unit 130 is a graphene water-washed core, including: a fresh air inlet 1401, and a fresh air outlet 1402 facing the same. The fresh air intake 1401 and the fresh air outlet 1402 are located in the fresh air duct 120. An exhaust inlet 1403 and an exhaust outlet 1404 opposite thereto. An exhaust air inlet 1403 and an exhaust air outlet 1404 are located in the exhaust duct 130.

Wherein, the fresh air channel 161 is communicated with the fresh air suction port 1401 and the fresh air exhaust port 1402. The exhaust duct 162 communicates with the exhaust inlet 1403 and the exhaust outlet 1404, and the fresh air duct 161 and the exhaust duct 162 are independent of each other and can exchange heat and humidity.

Wherein, the independent relation of the fresh air channel 161 and the exhaust air channel 162 means that the air in the fresh air channel 161 and the air in the exhaust air channel 162 are separated by the heat transfer plate and are not mixed with each other; when the fresh air duct 161 and the exhaust air duct 162 can exchange heat and humidity, the heat transfer plates that separate the fresh air duct 161 and the exhaust air duct 162 have a property of allowing heat energy to pass through with water vapor, so that the gas in the fresh air duct 161 and the gas in the exhaust air duct 162 can exchange heat (sensible heat) and humidity (latent heat).

Specifically, the fresh air duct 161 is located in the fresh air duct 120, and may be configured as a part of the fresh air duct 120; the exhaust air path 162 is located in the exhaust air duct 130, and may be configured as a part of the air duct 130 of Cheng Paifeng to exchange energy between the air in the fresh air duct 120 and the air in the exhaust air duct 130. When the fresh air duct 120 is opened and the exhaust duct 130 is opened, the fresh air duct 161 is actually a part of the fresh air duct 120; the exhaust duct 162 is actually a part of the wind of the exhaust duct 130.

[ Forming a blower ]

The fresh air fan 124 is disposed in the fresh air duct 120 and on the upstream side of the fresh air outlet 122, and is configured to drive air entering the housing 110 from the fresh air inlet 121 to blow out through the fresh air outlet 122.

The exhaust fan is disposed in the exhaust air duct 130 and on the upstream side of the exhaust air outlet 132, and is used for driving air entering the housing 110 from the exhaust air inlet 131 to be blown out through the exhaust air outlet 132.

The heat exchange unit 130 is disposed in both the fresh air duct 120 and the exhaust air duct 130, i.e. disposed at the overlapping intersection of the fresh air duct 120 and the exhaust air duct 130, so that the air flowing through the fresh air duct 120 exchanges heat with the air flowing through the exhaust air duct 130.

[ composition of sterilizing purification Module ]

In order to increase the purification treatment of the air entering the fresh air duct 120, a UV sterilization module 125 and a negative ion module 126 are arranged in the fresh air duct 120.

The UV sterilization module 125 is disposed on the windward side of the evaporator 172 in the dehumidifying assembly 170, and the light beam of the UV sterilization module 125 faces away from the windward side of the evaporator 172 in the initial assembly.

In order to increase the irradiation area of the UV sterilization module 125, the UV sterilization module 125 has a long shape along a vertical airflow direction.

Wherein, in order to increase the sterilization function of the fresh air after treatment, the anion module 126 can generate charged water particles with the particle size of 3-100 nm.

In some embodiments of the present application, to improve the cleanliness of the air entering the heat exchange unit 130 to prolong the life of the heat exchange core, the heat exchange unit 130 includes a fresh air primary/secondary filter 141, wherein the fresh air primary/secondary filter 141 may be a PM2.5 filter or an activated carbon filter.

The fresh air primary/middle effect filter screen 141 is plate-shaped and is arranged on the fresh air suction port 1401, and the size of the fresh air primary/middle effect filter screen 141 is smaller than that of the fresh air windward surface of the graphene water washing core body.

Specifically, the fresh air windward side is close to the fresh air inlet 121 and is located at one side close to the top plate 111, and an included angle formed between the fresh air windward side and the top plate 111 is an acute angle.

In this embodiment, to further improve the cleanliness of the air entering the heat exchange unit 130 to prolong the service life of the heat exchange core, the heat exchange unit 130 includes an exhaust primary/secondary filter 142, where the exhaust primary/secondary filter 142 may be a PM2.5 filter or an activated carbon filter.

The exhaust primary/middle effect filter screens 142 are all plate-shaped and are arranged on the exhaust air suction ports 1403, and the size of the exhaust primary/middle effect filter screens 142 is smaller than that of the exhaust windward surface of the graphene water-washed core.

Specifically, the windward side of the exhaust is close to the air intake 131 and is located at one side close to the top plate 111, and an included angle formed between the windward side of the exhaust and the top plate 111 is an acute angle.

In this embodiment of the application, in order to further improve the indoor air quality of outdoor new trend entering, in fresh air duct 120, be located the low reaches side of fresh air exhaust port 1402 and be equipped with just high-efficient compound filter screen 143, just high-efficient compound filter screen 143 is located the low reaches side of heat exchange unit 140 promptly, just high-efficient compound filter screen 143 can be the cuboid shape, can further purify from fresh air intake 121 inhaled air, blocks dust or fine particle entering room. Specifically, the primary high-efficiency composite filter 143 may be one or more of a primary filter, an activated carbon filter, a Hepa (High efficiency particle air) high-efficiency filter, an electrostatic filter unit, and the like.

It will be appreciated that the fresh air primary/secondary filter screen 141, the exhaust air primary/secondary filter screen 142 and the primary high efficiency composite filter screen 143 may be other filter forms besides the above examples, which are not limited in the embodiments disclosed herein.

Seasonal operation mode

When the air conditioner operates in summer, the outdoor fresh air obtains cold energy from indoor exhaust air, so that the temperature is reduced, and meanwhile, water vapor in the fresh air permeates into the fresh air under the action of partial pressure force, so that the fresh air with lower temperature and lower humidity is obtained. Therefore, when fresh air is introduced in summer, the cool energy of indoor exhaust air is utilized, and the comfort level of the body feeling of a user is improved.

When the air conditioner runs in winter, the outdoor fresh air obtains heat energy from the air exhaust, so that the temperature is increased, and the water vapor in the exhaust air permeates into the fresh air to obtain the fresh air with higher temperature and more humidity. Therefore, when fresh air is introduced in winter, the heat energy of indoor exhaust is utilized, and the comfort level of the body feeling of a user is improved.

In this embodiment, the fresh air inlet 121 of the variable frequency air conditioning device 100 is provided with a fresh air door 123, and the fresh air door 123 is located in the fresh air inlet 121 and is used for switching the fresh air inlet 121 from an open state to a closed state or from the closed state to the open state. For example, air may be introduced into the housing 110 from outside by opening the fresh air door 123 provided at the fresh air inlet 121.

Wherein, new trend air door 123 can include: the motor drives the wind path switching board to rotate.

In this embodiment, the air exhaust air inlet 131 of the variable frequency air conditioning device 100 is provided with an air exhaust air door, and the air exhaust air door is located in the air exhaust air inlet 131 and is used for switching the air exhaust air inlet 131 from an open state to a closed state or from the closed state to the open state. For example, air may be introduced into the housing 110 from the room by opening an exhaust damper provided at the exhaust air inlet 131.

In this embodiment, the fresh air door 123 and the exhaust air door are not necessarily disposed at the fresh air inlet 121 and the exhaust air inlet 131, but may be disposed in the fresh air duct 120 and the exhaust air duct 130, so that each air path may be opened and closed by the air door; in addition, the air door arranged at the similar air opening can share one air door, and each air opening is not required to be independently provided with the air door, so that the product cost can be effectively reduced.

[ New wind mode ]

In this embodiment of the application, when the indoor and outdoor temperature and humidity are relatively suitable, for example, the humidity is in the range of 40% -60%, at this time, the dehumidification module is not fair, that is, the compressor does not work. When the variable frequency air conditioning device 100 is in the fresh air mode, the fresh air fan 124 and the exhaust fan 133 are operated, the internal circulation air door 151 is in a closed state, that is, the air path switching plate at the internal circulation air door 151 covers the air path of the circulation air duct, and the fresh air door 123 and the exhaust air door are in an open state, that is, the air path switching plates of the fresh air door 123 and the exhaust air door are rotated to the positions of opening the fresh air inlet 121 and the exhaust air inlet 131.

At this time, the indoor air flows along the air discharge duct, specifically, the indoor air enters the case 110 from the air discharge air inlet 131, and then sequentially flows to the air discharge air inlet 1403, the air discharge duct 162, the air discharge air outlet 1404, and the air discharge fan 133 of the heat exchange unit 130 (the air discharge fan 133 is a driving power of the indoor air), and flows out of the case 110 from the air discharge air outlet 132, wherein the heat (sensible heat or latent heat) of the indoor air is recovered by the heat exchange unit 130 while passing through the heat exchange unit 130, that is, while the air flows through the air discharge duct 162.

While the indoor air flows along the exhaust duct, the outdoor air flows along the fresh air duct 120, specifically, the outdoor air enters the case 110 from the fresh air intake port 121 and then flows to the fresh air intake port 1401, the fresh air duct 161, the fresh air outlet 1221402, and the fresh air blower 124 of the heat exchange unit 130, and flows indoors from the fresh air outlet 122, wherein the outdoor air in the fresh air duct 161 is heated or cooled by heat (sensible heat or latent heat) of the indoor air in the exhaust duct 162 recovered by the heat exchange unit 130 while passing through the heat exchange unit 130. Therefore, the variable frequency air conditioning device 100 provided by the application reduces heat loss while providing fresh air for indoor space, so that waste heat is effectively utilized.

The main characteristic of the fresh air mode is that the dehumidifying module 170 does not work, and fresh air and exhaust air are supplied and exhausted simultaneously, and the fresh air and the exhaust air can pass through the heat exchange unit 140, and the temperature and humidity recovery is realized through the energy exchange of the inner core body of the heat exchange unit 140. Such as indoor air, whether in winter or summer, the energy of the indoor air has a recovered value. If in winter, the indoor air is damp and hot, and in summer is damp and cold, the exchange of cold and heat or humidity can be realized through the cross energy exchange of the fresh air duct 120 and the exhaust air duct 130 in the core body, and the energy consumption is saved.

[ internal circulation mode ]

In case of severe pollution of the outdoor air or extremely low outdoor temperature, the indoor air is relatively good at this time. If the outdoor air is severely polluted or the outdoor temperature is extremely low, the fresh air is introduced at the moment to damage the core of the heat exchange unit 140, wherein the damage can be the core freezing out caused by the low outdoor temperature, and in the internal circulation mode, the fresh air inlet 121 is communicated with one end of the fresh air channel 161, and the fresh air outlet 122 is communicated with the other end of the fresh air channel 161; the air exhaust air inlet 131 is communicated with one end of the air exhaust air passage 162, and the air exhaust air outlet 132 is communicated with the other end of the air exhaust air passage 162; the air in the first space enters the shell 110 through the fresh air inlet 121, flows through the fresh air channel 161, and can flow out of the shell 110 through the fresh air outlet 122 to enter the second space; the air in the second space enters the housing 110 through the air exhaust inlet 131, flows through the air exhaust channel 162, and flows out of the housing 110 through the air exhaust outlet 132 to enter the first space. At this time, the exhaust fan 133 is not operated, that is, the exhaust duct 130 is not operated, and the exhaust air is not discharged through the core.

Meanwhile, the primary high-efficiency composite filter screen 143 is arranged in the internal circulation air duct, so that the indoor air can be purified.

[ anti-condensation mode ]

When the variable frequency air conditioner 100 is installed in a cold area and is turned on to perform heat exchange, the fresh air duct 120 and the exhaust air duct are simultaneously turned on, and the indoor air temperature is high because the air in the exhaust air duct 130 is derived from the indoor, and the indoor is usually warmed by floor heating and the like; the air in the fresh air duct 120 comes from the outside and the outdoor temperature in the cold region is low. The fresh air intake 121 is generally provided with an outdoor temperature sensor for detecting the temperature of the outdoor air, and when it is detected that the outdoor temperature is low and the heat exchange unit 130 may be frosted, the variable frequency air conditioner 100 operates in an internal circulation mode in order to prevent the heat exchange unit 130 from being blocked by the frosting.

Specifically, the frosting position of the variable frequency air conditioner 100 mainly includes the following points, firstly, when the hot air in the air exhaust channel 162 in the heat exchange unit 130 exchanges heat with the cold air in the fresh air channel 161, the temperature is reduced due to the heat exchange between the hot air in the air exhaust channel 162 and the cold air in the fresh air channel 161, so that the moisture is released and frosted.

The other is that when the outdoor air entering the case 110 from the fresh air inlet 121 ends with the fresh air inlet 1401 of the heat exchange unit 130, frost is formed at the fresh air inlet 1401 due to the temperature difference at the fresh air inlet 1401.

When frosting occurs in the heat exchange unit 130, the indoor hot air can flow through the fresh air path 161 and/or the exhaust air path 162 by opening the internal circulation air duct 150, so as to defrost the heat exchange unit 130, and the heat exchange unit 130 can work normally.

In this embodiment, when the variable frequency air conditioning apparatus 100 performs the internal circulation mode, one embodiment is as follows: the air doors at the air exhaust inlet and the fresh air outlet 122 of the shell 110 are opened, and the air doors at the air exhaust outlet and the fresh air inlet 121 of the shell 110 are closed. The indoor air sequentially flows through the air exhaust inlet, the air exhaust inlet 1403 of the heat exchange unit 130, the air exhaust path, the air exhaust outlet 1404 of the heat exchange unit 130, the fresh air inlet 1401 of the heat exchange unit 130, the fresh air path 161, the fresh air outlet 1221402 of the heat exchange unit 130, and the fresh air outlet 122. When the variable frequency air conditioning device 100 operates in the internal circulation mode, the exhaust air passage and the fresh air passage 161 are actually part of the internal circulation air passage in the internal circulation mode.

In this embodiment, the positions of the air outlets, the air exhaust fan and the fresh air fan 124 may be adjusted, so that when the internal circulation mode is operated, the indoor air sequentially flows through the air exhaust inlet, the air return opening, the fresh air suction port 1401 of the heat exchange unit 130, the fresh air channel 161, the fresh air outlet 1221402 of the heat exchange unit 130 and the fresh air outlet 122, i.e. the fresh air channel 161 is part of the internal circulation air channel in the internal circulation mode in practice.

In this embodiment, in order to increase the air flow temperature in the internal circulation mode, electric auxiliary heating may be further provided on the upstream side of the air exhaust air inlet and/or the fresh air inlet 1401, so that the air temperature entering the air exhaust air inlet and/or the fresh air inlet 1401 is increased, thereby accelerating defrosting.

[ Smart dehumidification mode ]

In the smart dehumidification mode, the dehumidification unit is operated, and the dehumidification unit 170 can perform air conditioning adjustment according to the set target humidity.

Specifically, the environment detection unit 180 selects whether to dehumidify by using the internal circulation duct or to introduce fresh air for dehumidification by using the fresh air mode according to the detected difference between the indoor humidity and the target humidity.

In the case of a certain machine dehumidification capacity, a large humidity load will result in an increase in the air moisture content of the fresh air outlet 122. The rate of decrease of the humidity of the air in the room is retarded. In the internal circulation mode, no indoor humidity is high and the load is low, and at this time, the internal circulation dehumidification is performed on the indoor air in the internal circulation mode, so that the dehumidification speed is high. But has side effects, the air quality is poor, because no fresh air is introduced, and the content of carbon dioxide can be increased. Therefore, in the smart dehumidification mode, it is necessary to balance the dehumidification speed requirement and the air quality requirement.

[ switching between fresh air mode and internal circulation mode ]

The variable frequency air conditioning device 100 includes an air duct switching part disposed between the fresh air inlet 121 and the fresh air outlet 122, and between the heat exchange unit 130 and the exhaust air inlet; the air duct switching part at least comprises a first state and a second state; a controller configured to: receiving air parameters of the first space and/or the second space, and controlling the air channel switching part to switch to be in a first state or a second state;

wherein the air parameters include at least air humidity, mass and temperature.

Specifically, the air duct switching part includes a fresh air door 123 and an internal circulation air door 151, where the fresh air door 123 is disposed in the fresh air duct 120 and at the fresh air inlet 121; the inner circulation damper 151 is disposed in the inner circulation duct 150 and at the inner circulation air port 151.

Wherein, the fresh air door 123 is opened, the internal circulation air door 151 is closed to correspond to the first state of the air channel switching part; the fresh air damper 123 is closed. The internal circulation damper 151 closes the second state of the corresponding duct switching part.

Wherein the first state corresponds to a first mode of the variable frequency air conditioning device 100 and the second state corresponds to a second mode of the variable frequency air conditioning device 100;

In the first mode, the fresh air inlet 121 is communicated with one end of the fresh air channel 161, and the fresh air outlet 122 is communicated with the other end of the fresh air channel 161; the air exhaust air inlet 131 is communicated with one end of the air exhaust air passage 162, and the air exhaust air outlet 132 is communicated with the other end of the air exhaust air passage 162; the air in the first space enters the shell 110 through the fresh air inlet 121, flows through the fresh air channel 161, and can flow out of the shell 110 through the fresh air outlet 122; the air in the second space enters the housing 110 through the air exhaust inlet 131, flows through the air exhaust channel 162, and flows out of the housing 110 through the air exhaust outlet 132 to enter the first space.

In the second mode, the air exhaust inlet 131 is communicated with one end of the internal circulation air duct 150, the fresh air outlet 122 is communicated with the other end of the internal circulation air duct 150, and air in the second space enters the housing 110 through the air exhaust inlet 131, flows through the internal circulation air duct 150 and the internal circulation air outlet 151, and flows out of the housing 110 through the fresh air outlet 122 to enter the second space.

Wherein, still include: the outdoor temperature and humidity sensing unit is arranged in the shell 110 and close to the fresh air inlet 121 and is used for detecting the temperature and/or humidity of air entering the shell 110 from the first space;

The indoor temperature and humidity sensing unit is disposed in the housing 110 near the exhaust air inlet 131, and is used for detecting the temperature and/or humidity of the air entering the housing 110 from the second space.

Wherein the controller is configured to: receiving air parameters of the first space and/or the second space, and controlling the air channel switching part to switch to be in a first state or a second state, wherein the method specifically comprises the following steps:

the controller is communicatively connected to the outdoor temperature and humidity sensing unit and the indoor temperature and humidity sensing unit, and the controller is configured to: when the temperature value of the air detected by the outdoor temperature and humidity sensing unit is larger than the first outdoor temperature value and smaller than the second outdoor temperature value, the air channel switching part is controlled to be in a first state; when the temperature value of the air detected by the received indoor temperature and humidity sensing unit is larger than the first indoor temperature value and smaller than the second outdoor temperature value, the air duct switching part is controlled to be in a second state.

Although the present invention has been described above with reference to the drawings as illustrated, the present invention is not limited to the embodiments and drawings disclosed in the present specification, but it is apparent that various modifications can be made by one of ordinary skill within the scope of the technical idea of the present invention. Also, even if the operational effects corresponding to the structural elements of the present invention are not explicitly described in the course of the foregoing description of the embodiments of the present invention, effects predictable from the corresponding structural elements should be recognized.

Claims

1. A variable frequency air conditioning apparatus, comprising:

a housing;

2. A variable frequency air conditioning unit according to claim 1, wherein,

the first middle partition plate is provided with a first air outlet, the first air outlet is communicated with the air exhaust air outlet, and the first air outlet and the air exhaust air outlet are oppositely arranged.

3. A variable frequency air conditioning unit according to claim 2, wherein,

the first middle partition plate is provided with a first air inlet notch, the first air inlet notch is communicated with the fresh air inlet, and the first air inlet notch is arranged opposite to the fresh air inlet.

4. A variable frequency air conditioning unit as defined in claim 3, wherein,

an inner circulation air port is formed in the second middle partition plate and communicated with the exhaust air inlet, and the inner circulation air port is arranged opposite to the exhaust air inlet.

5. A variable frequency air conditioning unit according to claim 4, wherein,

The second middle partition plate is provided with a second air outlet which is communicated with the fresh air outlet, and the second air outlet is opposite to the fresh air outlet.

6. A variable frequency air conditioning unit according to claim 5, wherein,

the fresh air inlet, the first air inlet notch, the heat exchange unit, the second air outlet and the space communicated with the fresh air outlet form the fresh air channel.

7. A variable frequency air conditioning unit according to claim 5, wherein,

the air exhaust air inlet, the internal circulation air inlet, the heat exchange unit, the first air outlet and the air exhaust air outlet are communicated with each other to form an air exhaust air channel.

8. A variable frequency air conditioning unit according to claim 7, wherein,

further comprises:

Wherein the first air duct is formed as a part of the fresh air duct;

wherein the third air duct is formed as a part of the exhaust air duct.

9. A variable frequency air conditioning unit according to claim 8, wherein,

further comprises:

10. A variable frequency air conditioning unit according to claim 9, wherein,

the fresh air fan is arranged in the first air channel and is used for driving air entering from the fresh air inlet to blow out from the fresh air outlet after passing through the heat exchange unit;