CN114838420B

CN114838420B - Fresh air humidifying device

Info

Publication number: CN114838420B
Application number: CN202210491731.5A
Authority: CN
Inventors: 黄信博; 张荣海; 颜鲁华; 都学敏; 周敏
Original assignee: Qingdao Hisense Hitachi Air Conditioning System Co Ltd
Current assignee: Qingdao Hisense Hitachi Air Conditioning System Co Ltd
Priority date: 2022-05-07
Filing date: 2022-05-07
Publication date: 2023-09-29
Anticipated expiration: 2042-05-07
Also published as: CN114838420A

Abstract

The application discloses a fresh air humidifying device, which comprises a first air channel and a second air channel, wherein heat exchangers are arranged in the two air channels, and adsorption materials are arranged on the heat exchangers; air duct switching devices are respectively arranged between the indoor air supply opening and the outdoor air outlet, and between the indoor air return opening and the outdoor fresh air opening; the air duct switching device is internally provided with a three-way air duct I and a three-way air duct II; one of the air duct switching devices is provided with a three-way air duct I communicated with the indoor air supply outlet, and a three-way air duct II communicated with the outdoor air outlet; the three-way air duct I of the other air duct switching device is communicated with an outdoor fresh air port, and the three-way air duct II is communicated with an indoor return air port; when the fresh air humidifying device executes a refrigerating dehumidification or heating humidification mode, the three-way air duct I and the three-way air duct II are alternately communicated with the first air duct and the second air duct. The refrigeration dehumidification and the heating humidification are realized through the communication switching of the two three-way air channels, the number of air doors required to be used is small, the occupied space is small, and the air channel switching reliability is improved.

Description

Fresh air humidifying device

Technical Field

The application relates to air conditioning equipment, in particular to a fresh air humidifying device.

Background

The fresh air device is used for introducing fresh air into the room so as to regulate the indoor air. When dehumidification is carried out in summer, fresh air is cooled through an evaporator, so that water vapor in air is condensed and then adsorbed on a material, an air duct is switched, after the evaporator is changed into a condenser, the condenser evaporates the water on the adsorption material, and the water in the adsorption material is taken away through outdoor exhaust; in winter, the principle is opposite, the indoor return air is cooled through the evaporator, water vapor in the air is condensed and then adsorbed on the material for storage, then the air duct is switched, after the evaporator is changed into a condenser, the condenser evaporates the water on the adsorption material, and the water is brought into the room through indoor air supply, so that the effects of moisturizing and humidifying are achieved. In the process, the heat exchanger is required to be changed into a condenser from an evaporator, and then the condenser is changed into the evaporator, and the fresh air channel and the exhaust channel are required to be continuously switched, so that a switching device is required to realize free switching of the air channel.

The existing fresh air device is opened and closed through the combination of a plurality of air valves, but the air valves are large in number and occupy large space, and if one air valve fails in the process, the device cannot work.

The above information disclosed in this background section is only for enhancement of understanding of the background section of the application and therefore it may not form the prior art that is already known to those of ordinary skill in the art.

Disclosure of Invention

Aiming at the problems pointed out in the background art, the application provides a fresh air humidifying device, wherein an air duct switching device is arranged in the fresh air humidifying device, refrigeration, dehumidification, heating and humidification are realized through the cooperation of two three-way air ducts and two air doors, the number of the air doors is small, the occupied space is small, and the air duct switching reliability is improved.

In order to achieve the aim of the application, the application is realized by adopting the following technical scheme:

in some embodiments of the present application, a fresh air humidity control apparatus is provided, including a first air duct and a second air duct that are isolated from each other, wherein a first heat exchanger is disposed in the first air duct, a second heat exchanger is disposed in the second air duct, and adsorption materials are disposed on the first heat exchanger and the second heat exchanger respectively;

an air duct switching device is respectively arranged between an indoor air supply opening and an outdoor air outlet of the fresh air humidity-adjusting device and between an indoor air return opening and an outdoor fresh air opening;

a three-way air duct I and a three-way air duct II are arranged in the air duct switching device;

one of the three-way air channels I of the air channel switching device is communicated with the indoor air supply outlet, and the three-way air channel II is communicated with the outdoor air outlet;

the three-way air duct I of the other air duct switching device is communicated with an outdoor fresh air port, and the three-way air duct II is communicated with an indoor return air port;

when the fresh air humidifying device executes a refrigerating dehumidification or heating humidification mode, the three-way air duct I and the three-way air duct II are alternately communicated with the first air duct and the second air duct.

In some embodiments of the present application, when the fresh air humidity control apparatus executes the air mixing mode, the three-way air duct i and the three-way air duct ii are alternately communicated with the first air duct and the second air duct, and at the same time, fresh air in the three-way air duct i and return air in the three-way air duct ii in the air duct switching apparatus between the indoor return air opening and the outdoor fresh air opening flow into the first air duct and the second air duct simultaneously.

In some embodiments of the present application, a first temperature sensor is disposed in the first air duct, a second temperature sensor is disposed in the second air duct, and a mixing proportion of fresh air and return air flowing into the first air duct and a mixing proportion of fresh air and return air flowing into the second air duct are adjusted according to detection data of the first temperature sensor and the second temperature sensor.

In some embodiments of the present application, a third temperature sensor is disposed at the outdoor fresh air inlet for detecting an outdoor fresh air temperature D, where D _min ＜D＜D _max When the system executes the wind mixing mode.

In some embodiments of the present application,

the air duct switching device is internally provided with a first air cavity and a second air cavity, and a shell is provided with a first air opening, a second air opening, a third air opening and a fourth air opening;

the first air port and the second air port are normally open, the first air port is communicated with the first air cavity, and the second air port is communicated with the second air cavity;

the third air port and the fourth air port are respectively provided with two parts which are opposite to the first air cavity and the second air cavity, the third air port is communicated with the second air channel, and the fourth air port is communicated with the first air channel;

the parts of the first air port, the third air port and the first air cavity are opposite, the parts of the fourth air port and the first air cavity are opposite, form the three-way air duct I, and the parts of the second air port, the third air port and the second air cavity are opposite, and the parts of the fourth air port and the second air cavity are opposite, form the three-way air duct II.

In some embodiments of the present application, air doors are respectively provided at the third air opening and the fourth air opening, and different portions of the third air opening and the fourth air opening are opened by moving the air doors, and the opened portions of the third air opening and the fourth air opening are communicated with different air cavities.

In some embodiments of the application, the third tuyere comprises an upper third tuyere and a lower third tuyere, and the fourth tuyere comprises an upper fourth tuyere and a lower fourth tuyere;

in the first working state, one air door moves to block the upper third air port and open the lower third air port, and the other air door moves to block the lower fourth air port and open the upper fourth air port;

in the second working state, one air door moves to block the lower third air port and open the upper third air port, and the other air door moves to block the upper fourth air port and open the lower fourth air port.

In some embodiments of the present application, two air doors on the air duct switching device disposed between the indoor air return opening and the indoor fresh air opening are respectively adjusted, so that the upper third air opening and the lower fourth air opening in a first working state are opened, and the lower third air opening and the upper fourth air opening in a second working state are opened;

and enabling the fresh air flowing out of the upper third air opening and the return air flowing out of the lower third air opening to be mixed in the second air channel, and enabling the fresh air flowing out of the upper fourth air opening and the fresh air flowing out of the lower fourth air opening to be mixed in the first air channel.

In some embodiments of the present application, racks are respectively arranged on opposite sides of the two air doors, and a gear is arranged between the two racks and meshed with the racks;

the gear rotates to drive the two air doors to move in opposite directions in a straight line so as to open different parts of the third air opening and the fourth air opening.

In some embodiments of the present application, first gears are respectively arranged on opposite sides of the two air doors, the second gear is arranged between the two first gears, and the first gears are vertically meshed with the second gears;

and the second gear rotates to drive the two air doors to synchronously and reversely rotate so as to open different parts of the third air port and the fourth air port.

Compared with the prior art, the application has the advantages and positive effects that:

the fresh air humidity control device disclosed by the application realizes air channel switching through two air channel switching devices, and a three-way air channel I and a three-way air channel II are arranged in the air channel switching devices; one of the air duct switching devices is provided with a three-way air duct I communicated with the indoor air supply outlet, and a three-way air duct II communicated with the outdoor air outlet; the three-way air duct I of the other air duct switching device is communicated with an outdoor fresh air port, and the three-way air duct II is communicated with an indoor return air port; when the fresh air humidifying device executes a refrigerating dehumidification or heating humidification mode, the three-way air duct I and the three-way air duct II are alternately communicated with the first air duct and the second air duct. The refrigeration dehumidification and the heating humidification are realized through the communication switching of the two three-way air channels, the number of air doors required to be used is small, the occupied space is small, and the air channel switching reliability is improved.

Other features and advantages of the present application will become apparent upon review of the detailed description of the application in conjunction with the drawings.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions of the prior art, the drawings that are needed in the embodiments or the description of the prior art will be briefly described below, it will be obvious that the drawings in the following description are some embodiments of the present application, and that other drawings can be obtained according to these drawings without inventive effort to a person skilled in the art.

FIG. 1 is a schematic diagram of a fresh air humidity control apparatus according to an embodiment;

FIG. 2 is a schematic view of a gas flow path of a fresh air conditioning apparatus in a first operating state according to an embodiment;

FIG. 3 is a schematic view of a gas flow path of a fresh air conditioning apparatus in a second operating state according to an embodiment;

fig. 4 is a schematic structural diagram of a first air duct switching device according to the first embodiment;

FIG. 5 is a schematic diagram of a first air duct switching device according to a first embodiment in a first operating state;

FIG. 6 is a schematic diagram of a first air duct switching device in a second operating state according to the first embodiment;

FIG. 7 is a front view of a first air duct switching device according to the first embodiment;

FIG. 8 is a cross-sectional view taken along line A1-A1 of FIG. 7;

FIG. 9 is a cross-sectional view taken along line B1-B1 of FIG. 7;

fig. 10 is a schematic diagram illustrating a second air duct switching device according to the first embodiment performing air mixing in a first working state;

FIG. 11 is a schematic diagram illustrating a second air duct switching device according to the first embodiment performing air mixing in a second working state;

FIG. 12 is a schematic diagram of a second air duct switching device according to an embodiment 1:1;

fig. 13 is a schematic structural diagram of a first air duct switching device according to a second embodiment;

fig. 14 is a schematic view of a first air duct switching device according to a second embodiment in a first operating state;

fig. 15 is a schematic view of a first air duct switching device according to a second embodiment in a second working state;

FIG. 16 is a front view of a first air duct switching device according to a second embodiment;

FIG. 17 is a cross-sectional view taken along line A2-A2 of FIG. 16;

FIG. 18 is a cross-sectional view taken along line B2-B2 of FIG. 16;

fig. 19 is a schematic diagram of a second air duct switching device according to a second embodiment in a first working state;

fig. 20 is a schematic diagram of air mixing performed by the second air duct switching device according to the second embodiment in the second working state;

fig. 21 is a schematic diagram of a second air duct switching device according to a third embodiment in a first working state;

fig. 22 is a schematic diagram illustrating air mixing performed by the second air duct switching device in the second working state according to the third embodiment;

FIG. 23 is a flow chart showing the switching of the duct switching device between the first operating state and the second operating state when the fresh air conditioning device performs the normal conditioning operation according to the embodiment;

FIG. 24 is a flow chart of the duct switching apparatus in performing mixing according to an embodiment;

fig. 25 is a flow chart of air volume adjustment of the air duct switching device according to the embodiment;

reference numerals:

110-indoor air supply port, 120-indoor air return port, 130-outdoor fresh air port, 140-outdoor air outlet;

210-a first air duct, 220-a second air duct;

310-a first heat exchanger, 320-a second heat exchanger;

410-exhaust fan, 420-exhaust fan and 430-compressor;

500-an air duct switching device;

510-a first tuyere;

520-second tuyere;

530-third tuyere, 531-upper third tuyere, 532-lower third tuyere;

540-fourth tuyere, 541-upper fourth tuyere, 542-lower fourth tuyere;

551-first wind cavity, 552-second wind cavity;

561-first damper, 562-second damper;

571-upper shell, 572-lower shell, 573-side wall, 574-partition;

581-motor, 582-rack, 583-first gear, 584-second gear;

a-a first air duct switching device;

and B-a second air duct switching device.

Detailed Description

The following description of the embodiments of the present application 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 application, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.

In the description of the present application, 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 application 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 application.

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 application, unless otherwise indicated, the meaning of "a plurality" is two or more.

In the description of the present application, 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 application will be understood in specific cases by those of ordinary skill in the art.

In the present application, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, as well as the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.

The following disclosure provides many different embodiments, or examples, for implementing different features of the application. In order to simplify the present disclosure, components and arrangements of specific examples are described below. They are, of course, merely examples and are not intended to limit the application. Furthermore, the present application may repeat reference numerals and/or letters in the various examples, which are for the purpose of brevity and clarity, and which do not themselves indicate the relationship between the various embodiments and/or arrangements discussed. In addition, the present application provides examples of various specific processes and materials, but one of ordinary skill in the art will recognize the application of other processes and/or the use of other materials.

The embodiment discloses a fresh air humidifying device which is used for regulating indoor temperature. Referring to fig. 1, the fresh air humidity control apparatus includes a housing, a first air duct 210 and a second air duct 220 isolated from each other are disposed in the housing, a first heat exchanger 310 is disposed in the first air duct 210, a second heat exchanger 320 is disposed in the second air duct 220, and the fresh air humidity control apparatus further includes a compressor 430, an exhaust fan 410, a blower 420, and other components.

The first heat exchanger 310 and the second heat exchanger 320 are each provided with an adsorption material.

The housing is also provided with an indoor air supply outlet 110, an indoor air return outlet 120, an outdoor fresh air outlet 130 and an outdoor air outlet 140.

In summer, the humidity of the outdoor air is high, moisture carried by the outdoor fresh air is required to be absorbed by the adsorption material, and then the moisture in the adsorption material is taken away by indoor exhaust, so that the purpose that the moisture carried by the outdoor fresh air cannot enter the room is realized. In the process, two heat exchangers are required to be changed from an evaporator to a condenser and then from the condenser to the evaporator, and the fresh air channel and the exhaust channel are required to be continuously switched.

The air duct switching device 500 is used for realizing the air duct switching between the fresh air channel and the exhaust channel in the cooling, dehumidifying or heating and humidifying mode.

The air duct switching devices 500 are respectively arranged between the indoor air supply opening 110 and the outdoor air outlet 140, and between the indoor air return opening 120 and the outdoor air inlet 130, and a first air duct switching device A is arranged between the indoor air supply opening 110 and the outdoor air outlet 140, and a second air duct switching device B is arranged between the indoor air return opening 120 and the outdoor air inlet 130. The first air duct switching device a and the second air duct switching device B are identical in structural form, but the air inlet and outlet of the air opening are different due to different setting positions, which will be described in detail below.

The air duct switching device 500 is internally provided with a three-way air duct I and a three-way air duct II, the three-way air duct I of the first air duct switching device A is communicated with the indoor air supply outlet 110, and the three-way air duct II is communicated with the outdoor air outlet 140; the three-way air duct I of the second air duct switching device B is communicated with the outdoor fresh air opening 130, and the three-way air duct II is communicated with the indoor return air opening 120.

For convenience of description below, two three-way air ducts of the first air duct switching device a are respectively labeled as a three-way air duct i and a three-way air duct ii, and two three-way air ducts of the second air duct switching device B are respectively labeled as a three-way air duct i 'and a three-way air duct ii'.

When the fresh air humidifying device executes a refrigerating dehumidification or heating humidification mode, the three-way air channel I, the three-way air channel II and the three-way air channel I 'and the three-way air channel II' of the first air channel switching device A and the second air channel switching device B are alternately communicated with the first air channel and the second air channel, so that air channel switching is realized.

The fresh air humidifying device has two states of air duct switching when in refrigeration dehumidification or heating humidification, the first state is shown in fig. 2, the second state is shown in fig. 3, and the humidifying gas flow path is switched between the first state and the second state.

The fresh air duct is represented by a dotted line in the first state, and specifically comprises: outdoor fresh air port 130- & gtthree-way air duct I' & gtfirst air duct 210- & gtfirst heat exchanger 310- & gtthree-way air duct I- & gtindoor air supply port 110;

the exhaust air duct is represented by a solid line in the first state, specifically: the indoor air return opening 120, the three-way air duct II', the second air duct 220, the second heat exchanger 320, the three-way air duct II and the outdoor air outlet 140.

The fresh air duct is represented by a dotted line in the second state, and specifically comprises: outdoor fresh air port 130, three-way air channel I', second air channel 220, second heat exchanger 320, three-way air channel I and indoor air supply port 110;

in the second state, the exhaust air duct is represented by a solid line, specifically: indoor return air inlet 120- & gtthree-way air duct II' & gtfirst air duct 210- & gtfirst heat exchanger 310- & gtthree-way air duct II- & gtoutdoor exhaust outlet 140.

In some embodiments of the present application, the fresh air humidity control device has a wind mixing mode, and the wind mixing mode is suitable for some more extreme working conditions, for example, in the case of heating and humidifying in winter, if the external temperature is too low, when the fresh air directly passes through the condenser, the outdoor cold air cannot be heated to the indoor required heating temperature only by the working capacity of the condenser, and the indoor required heating temperature cannot be reached, so that people feel uncomfortable. Under such circumstances, the second air duct switching device B will enter the air mixing mode, and when fresh air is introduced, part of indoor air is sucked into the air duct through the indoor air return port 120, and the indoor air with higher temperature in the air duct is mixed with the fresh air, so that the temperature of the fresh air can be increased to a temperature range in which the condenser can effectively operate, thereby ensuring the heating capacity of the humidity control device. Similarly, under the condition of refrigerating and dehumidifying in summer, the second air channel switching device B can be used for ensuring the refrigerating capacity of the evaporator and the humidifying device by introducing indoor low-temperature air to be mixed with fresh air with higher temperature and reducing the temperature of the fresh air.

The air mixing mode is also an adjustment based on the first state and the second state of the humidity control device, and a certain amount of indoor air needs to be mixed into fresh air during the air mixing mode, so that the amount of the fresh air is lower than that in a normal operation mode.

When the fresh air humidity control device executes the air mixing mode, the three-way air channel I and the three-way air channel II are alternately communicated with the first air channel 210 and the second air channel 220, and simultaneously fresh air in the three-way air channel I 'and return air in the three-way air channel II' in the second air channel switching device B can flow into the first air channel 210 and the second air channel 220 at the same time, so that the mixing of the fresh air and the return air is realized.

In some embodiments of the present application, in the air mixing mode, because the outdoor temperature is not constant, if the fresh air temperature is too low or too high, the more indoor air needs to be mixed, the ratio of the fresh air volume to the return air volume needs to be adjusted according to the outdoor temperature.

Specifically, a first temperature sensor (not shown) is disposed in the first air duct 210, a second temperature sensor (not shown) is disposed in the second air duct 220, and the mixing ratio of the fresh air and the return air flowing into the first air duct 210 and the mixing ratio of the fresh air and the return air flowing into the second air duct 220 are adjusted according to the detection data of the first temperature sensor and the second temperature sensor, so as to meet the system mixing requirement.

In some embodiments of the present application, a third temperature sensor (not shown) is provided at the outdoor fresh air port 130 for detecting outdoor fresh airWind temperature D, at D _min ＜D＜D _max When the system executes the wind mixing mode. D (D) _min And D _max The values of (2) are determined experimentally.

As for the specific structure of the air duct switching device 500, three embodiments are given in the present application, fig. 4 to 12 are a first embodiment, fig. 13 to 20 are a second embodiment, and fig. 21 and 22 are a third embodiment.

The inner cavity and the air port of the air channel switching device 500 in the three embodiments are the same, and the difference is in the structural form of the casing and the driving structure of the air door.

The specific structure of the air duct switching device will be described by taking the first embodiment shown in fig. 4 to 12 as an example.

Referring to fig. 4 and 5, a first air chamber 551 and a second air chamber 552 isolated from each other are provided in the air duct switching device 500, and a first air port 510, a second air port 520, a third air port 530, and a fourth air port 540 are provided on a housing of the air duct switching device 500.

The first air port 510 and the second air port 520 are normally open, the first air port 510 is communicated with the first air cavity 551, and the second air port 520 is communicated with the second air cavity 552.

The third air port 530 and the fourth air port 540 have two parts facing the first air chamber 551 and the second air chamber 552, respectively, the third air port 530 communicates with the second air duct 220, and the fourth air port 540 communicates with the first air duct 210.

The parts of the first air port 510, the third air port 530 and the first air cavity 551, the parts of the fourth air port 540 and the first air cavity 551 form a three-way air channel I, and the parts of the second air port 520, the third air port 530 and the second air cavity 552, and the parts of the fourth air port 540 and the second air cavity 552 form a three-way air channel II.

The third air port 530 and the fourth air port 540 are respectively provided with an air door, different parts of the third air port 530 and the fourth air port 540 are opened by the movement of the air door, the opened parts of the third air port 530 and the fourth air port 540 are communicated with different air cavities, and two three-way air channels can be communicated with different air channels (namely the first air channel 210 and the second air channel 220) by the change movement of the air door, so that air channel switching is realized.

For convenience of description below, the four air ports of the first air channel switching device A are respectively marked as a first air port I, a second air port II, a third air port III and a fourth air port IV, and the two air cavities are respectively marked as a first air cavity I and a second air cavity II; the four air openings of the second air channel switching device B are respectively marked as a first air opening I ', a second air opening II', a third air opening III 'and a fourth air opening IV', and the two air cavities are respectively marked as a first air cavity I 'and a second air cavity II'; the damper at the third tuyere 530 is marked as a first damper 561 and the damper at the fourth tuyere 540 is marked as a second damper 562.

In the first air channel switching device A, a first air opening I and a second air opening II are normally open air outlets, and a third air opening III and a fourth air opening IV are air inlets with adjustable air inlet.

In the second air duct switching device B, the first air opening I 'and the second air opening II' are normally open air inlets, and the third air opening III 'and the fourth air opening IV' are air outlets with adjustable air outlets.

The first air port I is communicated with the indoor air supply port 110, the second air port II is communicated with the outdoor air outlet 140, the third air port III is communicated with the second air duct 220, and the fourth air port IV is communicated with the first air duct 210.

The first air port I 'is communicated with the outdoor fresh air port 130, the second air port II' is communicated with the indoor air return port 120, the third air port III 'is communicated with the second air duct 220, and the fourth air port IV' is communicated with the first air duct 210.

Fig. 4 to 9 illustrate a first air duct switching device a, in which a first air duct 510 is adjacent to a second air duct 520, the first air duct 510 is adjacent to a third air duct 530, and the second air duct 520 is adjacent to a fourth air duct 540, as shown in fig. 2, 5 and 8, the second air duct switching device B is identical to the first air duct switching device a in terms of structural configuration, except that the air openings of the air openings are marked differently; in the second air duct switching device B, the first air duct 510 is adjacent to the second air duct 520, except that the first air duct 510 is adjacent to the fourth air duct 540, and the second air duct 520 is adjacent to the third air duct 530, as shown in fig. 10.

Referring to fig. 2, the fresh air duct in the first state is indicated by a dotted line, specifically: outdoor fresh air port 130, first air port I ', first air cavity I ', fourth air port IV ', first air channel 210, first heat exchanger 310, fourth air port IV, first air cavity I, first air port I and indoor air supply port 110;

the exhaust air duct is represented by a solid line in the first state, specifically: the indoor air return opening 120- & gt the second air opening II ' & gt the second air cavity II ' & gt the third air opening III ' & gt the second air channel 220- & gt the second heat exchanger 320- & gt the third air opening III- & gt the second air cavity II- & gt the second air opening II- & gt the outdoor air outlet 140.

Referring to fig. 3, the fresh air duct in the second state is indicated by a dotted line, specifically: outdoor fresh air port 130, first air port I ', first air cavity I ', third air port III ', second air channel 220, second heat exchanger 320, third air port III, first air cavity I, first air port I and indoor air supply port 110;

in the second state, the exhaust air duct is represented by a solid line, specifically: the indoor air return opening 120- & gt the second air opening II ' & gt the second air cavity II ' & gt the fourth air opening IV ' & gt the first air channel 210- & gt the first heat exchanger 310- & gt the fourth air opening IV- & gt the second air cavity II- & gt the second air opening II- & gt the outdoor air outlet 140.

In some embodiments of the present application, referring to fig. 5 and 6, two parts of the third air port 530 opposite to the first air cavity 551 and the second air cavity 552 are an upper third air port 531 and a lower third air port 532, where the upper third air port 531 is opposite to and communicated with the first air cavity 551, and the lower third air port 532 is opposite to and communicated with the second air cavity 552; the two parts of the fourth air port 540, which are opposite to the first air cavity 551 and the second air cavity 552, are an upper fourth air port 541 and a lower fourth air port 542, the upper fourth air port 541 is opposite to and communicated with the first air cavity 551, and the lower fourth air port 542 is opposite to and communicated with the second air cavity 552.

For convenience of description, two portions of the third tuyere 530 of the first air course switching device a are denoted by iii, two portions of the fourth tuyere 540 are denoted by iv, two portions of the third tuyere 530 of the second air course switching device B are denoted by iii ', and two portions of the fourth tuyere 540 are denoted by iv'.

Referring to fig. 2 and 5, in the first operating state, the first damper 561 blocks the upper third air port 531 and opens the lower third air port 532, and the second damper 562 blocks the lower fourth air port 542 and opens the upper fourth air port 541.

Specifically to a first air duct switching device A: the fresh air channel is that fresh air in the first air channel 210 passes through the upper fourth air port IV, the first air cavity I and the first air port I to the indoor air supply port 110; the air exhaust path is that the return air in the second air duct 220 passes through the lower third air opening III, the second air cavity II and the second air opening II to the outdoor air outlet 140.

Specifically to a second air duct switching device B: the fresh air channel is formed by supplying outdoor fresh air to the outdoor fresh air port 130, the first air port I ', the first air cavity I ', and the upper fourth air port IV ' to the first air channel 210; the exhaust air path is that indoor return air passes through the indoor return air port 120, the second air port II ', the second air cavity II ', the lower third air port III ' to the second air channel 220.

Referring to fig. 3 and 6, in the second operating state, the first damper 561 blocks the lower third tuyere 532 and opens the upper third tuyere 531, and the second damper 562 blocks the upper fourth tuyere 541 and opens the lower fourth tuyere 542.

Specifically to a first air duct switching device A: the fresh air channel is that fresh air in the second air channel 220 passes through the upper third air port III, the first air cavity I and the first air port I to the indoor air supply port 110; the air exhaust path is that the return air in the first air duct 210 passes through the lower fourth air port IV, the second air cavity II and the second air port II to the outdoor air outlet 140.

Specifically to a second air duct switching device B: the fresh air channel is formed by supplying outdoor fresh air to the outdoor fresh air port 130, the first air port I ', the first air cavity I ', and the upper third air port III ' to the second air channel 220; the exhaust air path is that indoor return air passes through the indoor return air port 120, the second air port II ', the second air cavity II ', the lower fourth air port IV ' to the first air channel 210.

For further understanding, reference may be made to fig. 7 to 9, in which fig. 8 is a schematic structural view taken along the first air chamber 551, fig. 9 is a schematic structural view taken along the second air chamber 552, and in which the dashed line represents the case of the air flow passage in the first state and the solid line represents the case of the air flow passage in the second state.

When the air mixing mode is executed, two air doors on the second air channel switching device B are respectively adjusted to open a lower third air opening III 'and an upper fourth air opening IV' in a first working state, and the diagram is shown as 10; the upper third tuyere III 'and the lower fourth tuyere IV' in the second operation state are opened as shown in 11.

This allows the fresh air flowing out of the upper third air port iii 'and the return air flowing out of the lower third air port iii' to be mixed in the second air duct 220, and the fresh air flowing out of the upper fourth air port iv 'and the fresh air flowing out of the lower fourth air port iv' to be mixed in the first air duct 210.

The opening sizes of the two air doors are adjusted, so that the air mixing proportion is adjusted.

In FIG. 12, the ratio of fresh air volume to return air volume is 1:1.

In the first embodiment, referring to fig. 4 and 5, the housing of the air duct switching device 500 includes an upper housing 571 and a lower housing 572, the upper housing 571 and the lower housing 572 are respectively octagonal, and eight side walls 573 are sequentially connected between the upper housing 571 and the lower housing 572.

A partition 574 is provided within the housing to divide the interior cavity of the housing into a first air cavity 551 and a second air cavity 552 arranged up and down.

The first, second, third and fourth tuyeres 510, 520, 530, 540 are spaced apart on the sidewall 573.

In the first air duct switching device a, referring to fig. 4 to 6, a first air duct 510 is provided at a portion on one side wall, a fourth air duct 540 is provided at the other side wall facing the first air duct 510, a second air duct 520 is provided at a portion on the other side wall facing the second air duct 520, and a third air duct 530 is provided at the other side wall facing the second air duct 520.

The up-down arrangement of the first and second air chambers 551 and 552 corresponds to the up-down arrangement of the upper and lower third air ports 531 and 532, and the up-down arrangement of the upper and lower fourth air ports 541 and 542.

The second air duct switching device B is similar to the first air duct switching device a, and will not be described in detail.

The housing of the air duct switching device 500 is provided with a motor 581, and the motor 581 is used for driving the air door to rotate so as to open different portions of the third air opening 530 and the fourth air opening 540.

Each damper is driven by a motor to achieve independent control of the third and fourth vents 530 and 540, respectively.

In the second embodiment, referring to fig. 13 and 14, the upper case 571 and the lower case 572 are respectively irregularly hexagonal, and six side walls 573 are provided between the upper case 571 and the lower case 572, which are connected in sequence.

The third tuyere 530 and the fourth tuyere 540 are provided on the same sidewall, and the first tuyere 510 and the second tuyere 520 are provided on the other two sidewalls at intervals.

In the first air duct switching device a, referring to fig. 13 to 15, a first air duct 510 is provided at a portion on one side wall, a second air duct 520 is provided at a portion on the other side wall spaced apart from the first air duct 510 by one side wall, and a third air duct 530 and a fourth air duct 540 are provided at the other side wall spaced apart from the first air duct 510 and the second air duct 520 by one side wall, respectively.

The movement of the damper in the second embodiment is realized by a gear and rack structure, specifically, the third damper 530 and the fourth damper 540 are located on the same plane, the third damper 530 and the fourth damper 540 are arranged left and right, racks 582 are respectively arranged on opposite sides of the damper on the third damper 530 and the damper on the fourth damper 540, a second gear 584 is arranged between the two racks 582, the second gear 584 is arranged on the housing of the air duct switching device 500, and the second gear 584 is meshed with the racks 582.

The second gear 584 rotates to drive the racks 582 on the two sides to synchronously and reversely perform linear motion, so as to drive the two air doors to synchronously and reversely perform linear motion, and further different parts of the third air port 530 and the fourth air port 540 are opened, so that air duct switching is realized.

The second gear 584 is disposed between the third tuyere 530 and the fourth tuyere 540, and the installation of the second gear 584 makes full use of the space region between the third tuyere 530 and the fourth tuyere 540, so that the structure is more compact, and the volume change of the entire air duct switching device 500 is not additionally caused.

The rack 582 can be integrally formed with the air door, and can also be formed by connecting two parts, so that the processing is convenient.

In some embodiments of the present application, the left and right sides of the third tuyere 530 and the fourth tuyere 540 are respectively provided with a sliding groove (not shown), the left and right sides of the air door are slidably disposed in the corresponding sliding grooves, and the opposite sides of the two air doors respectively extend from the corresponding sliding grooves, that is, the rack 582 extends from the sliding grooves so as to be meshed with the second gear 584, and the sliding groove structure also helps to improve the movement reliability of the air door, so that the structure is compact.

In some embodiments of the present application, a groove 575 is disposed between the third tuyere 530 and the fourth tuyere 540, the groove 575 extends along the length direction of the third tuyere 530 and the fourth tuyere 540, and the second gear 584 is disposed in the groove 575, so that the outer surface of the second gear 584 and the damper are located on the same plane as possible, which is helpful for improving the reliability of engagement between the second gear 584 and the rack 582, and does not additionally cause the increase of the external volume of the air duct switching device 500.

Fig. 14 is a schematic diagram of the first air duct switching device a according to the second embodiment in the first operating state.

Fig. 15 is a schematic diagram of the first air duct switching device a according to the second embodiment in the second operating state.

Fig. 16 is a front view of a first air duct switching device a according to a second embodiment, fig. 17 is a schematic structural view of the first air chamber 551, fig. 18 is a schematic structural view of the second air chamber 552, in which a dotted line indicates the condition of the air flow channel in the first state, and a solid line indicates the condition of the air flow channel in the second state.

Fig. 19 is a schematic diagram of the second air duct switching device B according to the second embodiment in the first operating state, and fig. 20 is a schematic diagram of the second air duct switching device B according to the second embodiment in the second operating state.

In some embodiments of the present application, the width of the side wall provided with the third air port 530 and the fourth air port 540 is larger than the width of the other side walls, so as to meet the space requirement of the left and right arrangement of the third air port 530 and the fourth air port 540, ensure the sizes of the third air port 530 and the fourth air port 540, and ensure the air quantity.

The third embodiment is similar to the second embodiment in structure, except that the driving structure of the damper is that, referring to fig. 21 and 22, the third tuyere 530 and the fourth tuyere 540 are arranged left and right, the opposite sides of the two dampers are respectively provided with a first gear 583, a second gear 584 is arranged between the two first gears 583, and the first gear 583 is vertically meshed with the second gear 584.

The second gear 584 rotates to drive the two first gears 583 to synchronously rotate and drive the two air doors to synchronously reversely rotate, different parts of the third air port 530 and the fourth air port 540 are opened, and the opened parts of the third air port 530 and the fourth air port 540 are communicated with different air cavities to realize air duct switching.

Fig. 21 is a schematic diagram of the second air duct switching device B according to the third embodiment in the first operating state, and fig. 22 is a schematic diagram of the second air duct switching device B according to the third embodiment in the second operating state.

The control flow of the air duct switching device is described below.

The air duct switching device 500 is required to be controlled and linked with the fresh air humidity control device, so that the fresh air humidity control device is only required to be controlled according to the state of the fresh air humidity control device, after the fresh air humidity control device is started, the air duct switching device 500 automatically enters a conventional control circulation process until a user sends a shutdown instruction and then stops, and conventional control logic is shown in fig. 23:

starting the fresh air humidifying device, and entering a refrigeration, dehumidification or heating and humidifying state;

the air door moves under the driving mechanism (the motor in the first embodiment and the second gear in the second embodiment and the third embodiment), and the air duct switching devices A and B enter a first working state;

calculating whether the running time reaches the required time, such as T+10s, if not, returning, if so, changing the position of the air door under the action of the driving structure, so that the air duct switching devices A and B enter a second working state;

entering the next dehumidification period;

calculating whether the running time reaches the required time, such as T+10s, if not, returning, if so, moving the air door to enable the air duct switching devices A and B to enter a first working state;

the above process is repeated.

Under extreme working conditions (outdoor supercooling or overheating), the fresh air adjusting device can automatically enter a wind mixing mode, the wind mixing proportion is controlled according to the motion position of the feedback automatic adjusting air door of the temperature sensor until the fresh air temperature can meet the system adjustment, and the wind mixing control logic is as shown in fig. 24:

detecting the fresh air temperature D of an outdoor fresh air port, and judging whether the fresh air temperature D is satisfied _min ＜D＜D _max If yes, executing the conventional control logic program shown in fig. 23, otherwise, controlling the first air channel switching device A to continue to operate according to the conventional control logic, and enabling the second air channel switching device B to enter a mixing mode;

if the second air duct switching device B is in the first working state at this time, the air door is adjusted within a set range according to the forward direction;

if the second air duct switching device B is in the second working state at this time, the air door is adjusted within a set range according to the reverse direction;

detecting whether the temperature in the first air duct and the second air duct meets D _min ＜D＜D _max If yes, the second air duct switching device B is controlled to periodically move according to a conventional control logic mode under the stepless adjustment angle, and the first state and the second state in the air mixing mode are switched; if not, the second air duct switching device B is controlled to continue to execute the air mixing mode.

Fig. 24 shows an air volume adjusting mode, wherein the air volume adjusting mode is also based on normal operation and air mixing operation, different windshields are arranged, each windshield corresponds to different rotation angles of a stepping motor and rotation speeds of a fan motor, and when a user needs to adjust the air volume, the air volume can be adjusted by controlling the rotation speeds of the motor or the opening degree of the air opening.

In the description of the above embodiments, particular features, structures, materials, or characteristics may be combined in any suitable manner in any one or more embodiments or examples.

The foregoing is merely illustrative of the present application, and the present application is not limited thereto, and any changes or substitutions easily contemplated by those skilled in the art within the scope of the present application should be included in the scope of the present application. Therefore, the protection scope of the application is subject to the protection scope of the claims.

Claims

1. A fresh air humidifying device, comprising:

the device comprises a first air channel and a second air channel which are isolated from each other, wherein a first heat exchanger is arranged in the first air channel, a second heat exchanger is arranged in the second air channel, and adsorption materials are respectively arranged on the first heat exchanger and the second heat exchanger;

it is characterized in that the method comprises the steps of,

when the fresh air humidifying device executes a refrigerating dehumidification or heating humidification mode, the three-way air duct I and the three-way air duct II are alternately communicated with the first air duct and the second air duct;

the parts of the first air port, the third air port and the first air cavity are opposite, and the parts of the fourth air port and the first air cavity are opposite, so that the three-way air duct I is formed, and the parts of the second air port, the third air port and the second air cavity are opposite, and the parts of the fourth air port and the second air cavity are opposite, so that the three-way air duct II is formed;

the third air port and the fourth air port are respectively provided with an air door, different parts of the third air port and the fourth air port are opened through movement of the air doors, and the opened parts of the third air port and the fourth air port are communicated with different air cavities.

2. The fresh air humidifying device according to claim 1, wherein,

when the fresh air humidity control device executes a mixing mode, the three-way air channel I and the three-way air channel II are alternately communicated with the first air channel and the second air channel, and fresh air in the three-way air channel I and return air in the three-way air channel II in the air channel switching device between the indoor return air inlet and the outdoor fresh air inlet simultaneously flow into the first air channel and the second air channel.

3. The fresh air humidifying device according to claim 2, wherein,

the first air duct is internally provided with a first temperature sensor, the second air duct is internally provided with a second temperature sensor, and the mixing proportion of fresh air and return air flowing into the first air duct and the mixing proportion of fresh air and return air flowing into the second air duct are adjusted according to detection data of the first temperature sensor and the second temperature sensor.

4. The fresh air humidifying device according to claim 2, wherein,

a third temperature sensor is arranged at the outdoor fresh air port and used for detecting the outdoor fresh air temperature D, and the temperature D is that _min ＜D＜D _max When the system executes the wind mixing mode.

5. The fresh air humidifying device according to any one of claim 1 to 4, wherein,

the third air port comprises an upper third air port and a lower third air port, and the fourth air port comprises an upper fourth air port and a lower fourth air port;

6. The fresh air humidifying device according to claim 5, wherein,

respectively adjusting two air doors on the air channel switching device arranged between the indoor air return opening and the outdoor fresh air opening to enable the upper third air opening and the lower fourth air opening in a first working state to be opened, and enable the lower third air opening and the upper fourth air opening in a second working state to be opened;

7. The fresh air humidifying device according to claim 5, wherein,

racks are respectively arranged on the opposite side edges of the two air doors, a gear is arranged between the two racks, and the gear is meshed with the racks;

8. The fresh air humidifying device according to claim 5, wherein,

the opposite side edges of the two air doors are respectively provided with a first gear, a second gear is arranged between the two first gears, and the first gears are vertically meshed with the second gears;