WO2023142516A1

WO2023142516A1 - Fresh air fan

Info

Publication number: WO2023142516A1
Application number: PCT/CN2022/123551
Authority: WO
Inventors: 都学敏; 孟建军; 王涛; 黄信博
Original assignee: 青岛海信日立空调系统有限公司
Priority date: 2022-01-27
Filing date: 2022-09-30
Publication date: 2023-08-03

Abstract

A fresh air fan. The fresh air fan comprises a housing, a third partition portion, a first heat exchanger, a second heat exchanger, a plurality of adsorption members, an indoor switching assembly and an outdoor switching assembly. The housing has an outdoor air intake opening, an outdoor air output opening, an indoor air supply opening and an indoor air return opening. The indoor switching assembly or the outdoor switching assembly comprises a switching valve, which is arranged in a circulation cavity; the switching valve is rotatable; and the switching valve is used for communicating an air intake port with one of a first heat exchange port or a second heat exchange port, and communicating an air output port with the other one of the first heat exchange port or the second heat exchange port, so as to change a flow direction of an intake airflow and a flow direction of an output airflow.

Description

New fan

This application claims the priority of the Chinese patent application with application number 202220226572.1 submitted on January 27, 2022, and the priority of the Chinese patent application with application number 202210102383.8 submitted on January 27, 2022, in 2022 The priority of the Chinese patent application with application number 202210101068.3 filed on January 27, the entire content of which is incorporated in this application by reference.

technical field

The disclosure belongs to the technical field of air conditioning, and in particular relates to a new fan.

Background technique

With the improvement of people's living standards, people pay more and more attention to the quality of the indoor environment. Indoor air humidity is also used as a criterion for judging the comfort of the indoor environment. Air quality and comfort are increasingly valued by every family and various commercial and office places.

Contents of the invention

Provided is a fresh air blower, which includes a housing, a third partition, a first heat exchanger, a second heat exchanger, a plurality of adsorption pieces, an indoor conversion assembly and an outdoor conversion assembly. The housing has an outdoor air inlet, an outdoor air exhaust port, an indoor air supply port and an indoor air return port. The first partition and the second partition are arranged in the casing, the first partition and the second partition are arranged along a side perpendicular to the casing, the first The partition and the part of the casing close to the outdoor air inlet form an outdoor cavity, the second partition and the part of the casing close to the indoor air outlet form an indoor cavity, and the The first partition, the second partition and the housing enclose a heat exchange cavity. The first end of the third partition is connected to the first partition, the second end of the third partition is connected to the second partition, and the third partition connects the heat exchange cavity The body is divided into a first heat exchange chamber and a second heat exchange chamber. The first heat exchanger is disposed in the first heat exchange chamber. The second heat exchanger is arranged in the second heat exchange chamber. The plurality of adsorbents are arranged on the surface of the first heat exchanger and the second heat exchanger, and the plurality of adsorbents are configured to absorb moisture in the surrounding air when it is cold, and release the adsorbed moisture when it is hot. moisture. The indoor conversion component is set in the indoor cavity, the outdoor conversion component is set in the outdoor cavity, the indoor conversion component or the outdoor conversion component has a flow cavity and four ports, and the flow cavity and The four ports communicate with each other, and the four ports are the air inlet port, the air outlet port, the first heat exchange port and the second heat exchange port, and the four ports of the indoor conversion component are connected with the outdoor air exhaust port respectively. port, the indoor air supply port, the first heat exchange chamber, and the second heat exchange chamber, and the four ports of the outdoor conversion assembly are respectively connected to the outdoor air inlet, the indoor air return port, the The first heat exchange chamber communicates with the second heat exchange chamber, the indoor conversion assembly or the outdoor conversion assembly includes a conversion valve, the conversion valve is arranged in the circulation chamber, the conversion valve is rotatable, and The switching valve is used to connect the air inlet port with one of the first heat exchange port or the second heat exchange port, and connect the air outlet port with the first heat exchange port or the second heat exchange port. The other of the two heat exchange ports is connected to change the flow direction of the air inlet airflow and the air outlet airflow.

Description of drawings

In order to illustrate the technical solutions in the present disclosure more clearly, the following will briefly introduce the accompanying drawings required in some embodiments of the present disclosure, however, the accompanying drawings in the following description are only drawings of some embodiments of the present disclosure , for those skilled in the art, other drawings can also be obtained according to these drawings. In addition, the drawings in the following description can be regarded as schematic diagrams, and are not limitations on the actual size of the product involved in the embodiments of the present disclosure, the actual process of the method, the actual timing of signals, and the like.

Fig. 1 is a structural diagram of a new fan according to some embodiments;

Fig. 2 is the plane structural diagram of the fresh air blower of Fig. 1;

Fig. 3 is a structural diagram of another fresh air blower according to some embodiments;

Figure 4 is a block diagram of an indoor conversion assembly according to some embodiments;

Fig. 5 is a structural diagram of another perspective of the indoor conversion assembly of Fig. 4;

Figure 6 is a block diagram of another indoor conversion assembly according to some embodiments;

Figure 7 is a block diagram of yet another indoor conversion assembly according to some embodiments;

Fig. 8 is a structural diagram of another viewing angle of the indoor conversion assembly of Fig. 7;

Figure 9 is a block diagram of yet another indoor conversion assembly according to some embodiments;

Figure 10 is a structural diagram of a switching valve according to some embodiments;

Figure 11 is a block diagram of yet another indoor conversion assembly according to some embodiments;

Fig. 12 is an adjustment state diagram of the switching valve of the indoor switching assembly in Fig. 11;

Fig. 13 is another adjustment state diagram of the switching valve of the indoor switching assembly in Fig. 11;

Fig. 14 is a structural diagram of a limit barrier according to some embodiments;

Fig. 15 is a structural diagram of another limit barrier according to some embodiments;

Fig. 16 is a structural diagram of another limit barrier according to some embodiments;

Fig. 17 is a structure diagram of a regulating valve according to some embodiments;

Fig. 18 is a schematic diagram of a refrigerant cycle of a new fan according to some embodiments;

Figure 19 is a flowchart of a control method of an indoor conversion assembly according to some embodiments;

Figure 20 is a flowchart of another control method of an indoor conversion assembly according to some embodiments;

Fig. 21 is a diagram of the adjustment state of the switch part of the indoor conversion assembly in Fig. 6;

Fig. 22 is a diagram of the adjustment state of the switch part of the indoor conversion assembly in Fig. 7;

Fig. 23 is a flow chart of a control method of the indoor conversion assembly in Fig. 6;

Fig. 24 is a flow chart of a control method of the indoor conversion assembly in Fig. 7;

Figure 25 is a diagram of the adjustment state of the indoor conversion assembly;

Figure 26 is a flowchart of yet another control method of an indoor conversion assembly according to some embodiments;

Figure 27 is a flowchart of yet another control method of an indoor conversion assembly according to some embodiments;

Figure 28 is a flowchart of yet another control method of an indoor conversion assembly according to some embodiments;

Figure 29 is a flowchart of yet another control method of an indoor conversion assembly according to some embodiments;

Fig. 30 is a system diagram of a cooling mode of an embodiment of a new fan according to some embodiments;

Fig. 31 is a system diagram of the heating mode (humidification mode) of an embodiment of another fresh air blower according to some embodiments;

Fig. 32 is a system diagram after the indoor conversion assembly and the outdoor conversion assembly in Fig. 30 are reversed;

Detailed ways

The technical solutions in some embodiments of the present disclosure will be clearly and completely described below in conjunction with the accompanying drawings. Apparently, the described embodiments are only some of the embodiments of the present disclosure, not all of them. All other embodiments obtained by persons of ordinary skill in the art based on the embodiments provided in the present disclosure belong to the protection scope of the present disclosure.

Throughout the specification and claims, unless the context requires otherwise, the term "comprise" and other forms such as the third person singular "comprises" and the present participle "comprising" are used Interpreted as the meaning of openness and inclusion, that is, "including, but not limited to". In the description of the specification, the terms "one embodiment", "some embodiments", "exemplary embodiments", "example", "specific examples" example)" or "some examples (some examples)" etc. are intended to indicate that specific features, structures, materials or characteristics related to the embodiment or examples are included in at least one embodiment or example of the present disclosure. Schematic representations of the above terms are not necessarily referring to the same embodiment or example. Furthermore, the particular features, structures, materials or characteristics described may be included in any suitable manner in any one or more embodiments or examples.

Hereinafter, the terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of indicated technical features. Thus, a feature defined as "first" and "second" may explicitly or implicitly include one or more of these features. In the description of the embodiments of the present disclosure, unless otherwise specified, "plurality" means two or more.

In describing some embodiments, the expressions "coupled" and "connected" and their derivatives may be used. For example, the term "connected" may be used in describing some embodiments to indicate that two or more elements are in direct physical or electrical contact with each other. As another example, the term "coupled" may be used when describing some embodiments to indicate that two or more elements are in direct physical or electrical contact. However, the terms "coupled" or "communicatively coupled" may also mean that two or more elements are not in direct contact with each other, but yet still co-operate or interact with each other. The embodiments disclosed herein are not necessarily limited by the context herein.

"At least one of A, B and C" has the same meaning as "at least one of A, B or C" and both include the following combinations of A, B and C: A only, B only, C only, A and B A combination of A and C, a combination of B and C, and a combination of A, B and C.

"A and/or B" includes the following three combinations: A only, B only, and a combination of A and B.

The use of "suitable for" or "configured to" herein means open and inclusive language that does not exclude devices that are suitable for or configured to perform additional tasks or steps.

As used herein, "about", "approximately" or "approximately" includes the stated value as well as the average within the acceptable deviation range of the specified value, wherein the acceptable deviation range is as determined by one of ordinary skill in the art. Determined taking into account the measurement in question and the errors associated with the measurement of a particular quantity (ie, limitations of the measurement system).

As used herein, "parallel", "perpendicular", and "equal" include the stated situation and the situation similar to the stated situation, the range of the similar situation is within the acceptable deviation range, wherein the The stated range of acceptable deviation is as determined by one of ordinary skill in the art taking into account the measurement in question and errors associated with measurement of the particular quantity (ie, limitations of the measurement system). For example, "parallel" includes absolute parallelism and approximate parallelism, wherein the acceptable deviation range of approximate parallelism can be, for example, a deviation within 5°; Deviation within 5°. "Equal" includes absolute equality and approximate equality, where the difference between the two that may be equal is less than or equal to 5% of either within acceptable tolerances for approximate equality, for example.

In summer, the outdoor air humidity is high, and the moisture carried by the outdoor fresh air needs to be absorbed by the adsorbent material first, and then the moisture in the adsorbent material is taken away by the indoor exhaust, so as to prevent the moisture carried by the outdoor fresh air from entering the room. In the process, the heat exchanger needs to change from evaporator to condenser, and then from condenser to evaporator, and the fresh air flow and exhaust air flow also need to constantly switch the heat exchange chamber through which they flow, so it is necessary to set up a device that can A fresh air fan that can efficiently and quickly switch the direction of fresh air flow and exhaust air flow. At present, some fresh air fans are turned on and off by a combination of 8 air valves, which have a large number of air valves and take up a large space. If one air valve fails during the process, the fresh air machine cannot continue to work.

As shown in FIG. 1 and FIG. 2 , the present disclosure provides a fresh air blower 1000 . The fresh air machine 1000 includes a casing 200 , and the casing 200 has an outdoor air inlet 201 , an outdoor air exhaust outlet 204 , an indoor air supply outlet 202 and an indoor air return outlet 203 . The outdoor air inlet 201 and the outdoor air outlet 204 are located on the same side of the casing 200 , and the indoor air supply outlet 202 and the indoor air return outlet 203 are disposed on the opposite side of the casing 200 to the same side. The air intake air enters the room from the outdoor air inlet 201 and the indoor air supply port 202 , and the air outlet air enters the room from the indoor air return port 203 and the outdoor air exhaust port 204 .

The fresh air machine 1000 also includes a first partition 210 and a second partition 220, the first partition 210 and the second partition 220 are arranged in the casing 200, the first partition 210, the second partition 220 are vertical to the shell The body 200 is arranged in the direction of the same side, the first partition 210 is arranged on the side of the casing 200 close to the outdoor air inlet 201 , and the second partition 220 is arranged on the side of the casing close to the indoor air outlet 202 .

The interior of the housing 200 is divided into an indoor cavity, a heat exchange cavity, and an outdoor cavity by the first partition 210 and the second partition 220. The cavity surrounded by the tuyere 202, the heat exchange cavity is the cavity surrounded by the first partition 210, the second partition 220 and the casing 200, and the outdoor cavity is the first partition 210 and the casing 200 close to the outdoor The cavity surrounded by the air inlet 201.

For the convenience of description, unless otherwise specified, the expression of up and down orientations in this disclosure refers to the state of fresh air blower 1000 when it is in use. As shown in FIG. 1 , the height direction of the fresh air blower 1000 is up and down.

The fresh air blower 1000 also includes a third partition 230 , a first heat exchanger 310 and a second heat exchanger 320 . The third partition 230 is disposed in the heat exchange cavity and is perpendicular to the bottom surface of the casing 200 . A first end of the third partition 230 is connected to the first partition 210 , and a second end of the third partition 230 is connected to the second partition 220 . The third partition 230 divides the heat exchange cavity into a first heat exchange cavity 231 and a second heat exchange cavity 232, the first heat exchanger 310 is located in the first heat exchange cavity 231, and the second heat exchanger 320 is located in the second heat exchange cavity. Inside the heat exchange chamber 232. In other embodiments, the fresh air machine 1000 may have different shapes according to the shape and size of the installation space. Therefore, the third partition 230 can be installed in different ways according to different shapes of the fresh air blower 1000 . For example, the plane where the third partition 230 is located may also be parallel to the horizontal plane, and then the first heat exchanger 310 and the second heat exchanger 320 are arranged along a direction (upward and downward) perpendicular to the bottom surface of the casing 200 . The plane where the third partition 230 is located may also be disposed in the heat exchange chamber at an angle to the bottom surface of the housing 200 , and the first heat exchanger 310 and the second heat exchanger 320 are respectively located on both sides of the third partition.

The fresh air machine 1000 also includes multiple conversion assemblies, for example, the fresh air machine 1000 includes two conversion assemblies. The two conversion components are respectively an indoor conversion component 101 and an outdoor conversion component 102. The indoor conversion component 101 and the outdoor conversion component 102 are respectively arranged in the indoor inner cavity and the outdoor outer cavity, and are respectively used to communicate with the first heat exchanger 310 and the second heat exchanger 310. Two heat exchangers 320 are connected. As shown in Figures 4 to 6, the conversion assembly includes a conversion body 110 and a plurality of cover plates 103, the conversion body 110 may include a plurality of side plates connected in sequence, for example, the conversion body 110 includes four side plates connected in sequence, four Two side plates face each other to form a circulation chamber 111 , which is convenient for air to circulate in the circulation chamber 111 . A plurality of (for example, two) cover plates 103 are arranged oppositely and cover the circulation chamber 111 . The conversion body 110 has four ports, the four ports are the air inlet port 120, the air outlet port 130, the first heat exchange port 140 and the second heat exchange port 150, the air inlet port 120 is externally connected to the air inlet pipe, and the air outlet port 130 is connected with the air duct outside.

In some embodiments, as shown in FIG. 4 and FIG. 5 , the air inlet port 120 and the air outlet port 130 of the conversion body 110 are respectively located on opposite sides of the conversion body 110, for example, the air inlet port 120 is arranged on a vertically arranged on both side panels. The first heat exchange port 140 and the second heat exchange port 150 are located on the same side of the conversion body 110, for example, the first heat exchange port 140 and the second heat exchange port 150 are arranged on the cover plate 103, and the first heat exchange port 140 And the second heat exchange ports 150 are arranged along a direction (upward and downward directions) perpendicular to the bottom surface of the casing 200 . Both the first partition 210 and the second partition 220 have through holes distributed up and down, and the first heat exchange port 140 and the second heat exchange port 150 are connected to the first heat exchange chamber 231 and the second heat exchange chamber through the through holes. 232 connections.

The air inlet port 120 in the indoor conversion assembly 101 located in the indoor cavity is connected to the indoor air supply port 202 through the air inlet pipe, and the air outlet port 130 is connected to the indoor air supply port 202 through the air outlet pipe. The air inlet port 120 on the outdoor conversion assembly 102 located in the outdoor side cavity communicates with the outdoor air inlet 201 through the air inlet pipe, and the air outlet port 130 communicates with the outdoor air outlet 204 through the air outlet pipe.

The first heat exchange port 140 in the indoor conversion assembly 101 and the outdoor conversion assembly 102 communicates with the first heat exchange chamber 231 , and the second heat exchange port 150 in the indoor conversion assembly 101 and the outdoor conversion assembly 102 communicates with the second heat exchange chamber 232 .

In some embodiments, as shown in FIG. 3 and FIG. 4 , the first heat exchange port 140 and the second heat exchange port 150 in the indoor conversion assembly 101 and the outdoor conversion assembly 102 can also be set as the first heat exchange port 150 of the indoor conversion assembly 101 A heat exchange port 140 communicates with the second heat exchange cavity 232 , and the second heat exchange port 150 of the indoor conversion component 101 communicates with the first heat exchange cavity 231 . Meanwhile, the first heat exchange port 140 of the outdoor conversion assembly 102 communicates with the first heat exchange chamber 231 , and the second heat exchange port 150 of the outdoor conversion assembly 102 communicates with the second heat exchange chamber 232 .

In addition, the air inlet port 120, the air outlet port 130, the first heat exchange port 140 and the second heat exchange port 150 can be respectively arranged on different side plates or different cover plates, or can be respectively set on the same side plate or the same cover plate superior. To adapt to different shapes of the conversion body 110 .

The indoor conversion assembly 101 or the outdoor conversion assembly 102 also includes a conversion valve 160, the conversion valve 160 is arranged in the flow chamber 111, the conversion valve 160 is rotatable, and the conversion valve 160 is used to transfer the air intake in the indoor conversion assembly 101 and the outdoor conversion assembly 102 The port 120 communicates with one of the first heat exchange port 140 or the second heat exchange port 150, and connects the air outlet port 130 with the other of the first heat exchange port 140 or the second heat exchange port 150 to change the intake air. The flow direction of the flow and the flow direction of the outlet air flow.

As shown in FIG. 4 , in some embodiments, as shown in FIG. 4 and FIG. 5 , the switching valve 160 includes a rotating shaft 161 , a first switching element 162 and a driving device. The rotation shaft 161 is connected with the first switch part 162 , and the rotation shaft 161 is located at the center of the first switch part 162 . The first switch member 162 can block the flow chamber 111 into two independent spaces that are not connected to each other. The first switch member 162 rotates around the rotation shaft 161 along the inner wall of the conversion body 110 . The output shaft of the driving device is connected to the first switching element 162 .

At this time, when changing the flow direction of the inlet airflow and the flow direction of the outlet airflow, the rotating shaft 161 rotates to drive the first switch member 162 to rotate a first preset angle in the first direction (such as counterclockwise), so that the air inlet The communication position of the port 120 is switched from the first heat exchange port 140 to the second heat exchange port 150 , and the communication position of the air outlet port 130 is switched from the second heat exchange port 150 to the first heat exchange port 140 . Of course, the rotating shaft 161 can also be rotated to drive the first switch member 162 to rotate a second preset angle in a second direction (such as clockwise), so that the communication position of the air inlet port 120 is switched from the second heat exchange port 150 to the second heat exchange port 150. A heat exchange port 140 , the communication position of the air outlet port 130 is switched from the first heat exchange port 140 to the second heat exchange port 150 .

In some embodiments, as shown in FIG. 4 and FIG. 6 , the first switch member 162 can perform circular motions in the flow chamber 111 of the switching body 110 . As shown in FIG. 9 and FIG. 10 , the conversion body 110 includes two cover plates 103 oppositely arranged. The air inlet port 120 and the air outlet port 130 are respectively located on the same cover plate 103 of the conversion body 110, and the first heat exchange port 140 and the second heat exchange port 150 are located on the opposite side of the same cover plate 103 of the conversion body 110. On the other cover plate 103. The rotating shaft 161 is coaxially connected with the conversion main body 110 , and the rotating shaft 161 drives the first switch member 162 to rotate clockwise or counterclockwise in the conversion main body 110 to connect different ports on the two bottom surfaces.

In some embodiments, as shown in FIG. 11 , the switching valve 160 includes a second switching element 163 and a third switching element 164 arranged crosswise, and the second switching element 163 and the third switching element 164 switch the four ports of the main body 110 separated separately. The switching valve 160 further includes a plurality of switching valve ports 165 and a plurality of switching parts 166 , and the switching valve ports 165 are respectively arranged along the length direction of the second switching member 163 or the third switching member 164 . The switch part 166 is arranged on the switch valve port 165 , and the switch part 166 is rotatably connected with the second switch part 163 or the third switch part 164 , and the switch part 166 is used to control the opening or closing of each switch valve port 165 . Each switch part 166 on the second switch part 163 and the third switch part 164 is connected together by a connecting rod or a plurality of connecting rods, and the connecting rod moves clockwise or counterclockwise under the drive of the driving device to drive the second switch part 163 or each switch valve port 165 on the third switch member 164 is opened or closed, so as to achieve the effect that each switch valve port 165 on the second switch member 163 or the third switch member 164 is opened or closed synchronously.

As shown in Fig. 12 and Fig. 13, when each switch valve port 165 on the second switch member 163 is opened and each switch valve port 165 on the third switch member 164 is closed, the air inlet port 120 and the first heat exchange port 140 The air outlet port 130 communicates with the second heat exchange port 150 . On the contrary, the air inlet port 120 communicates with the second heat exchange port 150 , and the air outlet port 130 communicates with the first heat exchange port 140 .

The fresh air machine 1000 also includes a blower 410 and an exhaust fan 420 . As shown in Figures 1 and 3, the air blower 410 is arranged in the flow path where the air intake air flow is located, and is used to draw outdoor air into the room. In the outer cavity near the end of the outdoor air inlet 201, the exhaust fan 420 is arranged in the circulation path where the exhaust air flow is located, and is used to discharge the indoor air to the outside. For example, the exhaust fan 420 is arranged in the indoor side cavity near the indoor return air outlet 203 or the end near the outdoor air outlet 204 in the outdoor cavity.

In some embodiments, as shown in FIGS. 14 to 16 , the indoor conversion assembly 101 or the outdoor conversion assembly 102 further includes a plurality of limit barriers 170 , and the multiple limit barriers 170 are disposed on the inner wall of the conversion body 110 . For example, two position-limiting barriers 170 are respectively provided on the inner walls of the two horizontal side plates of the conversion body. According to the actual installation space conditions, each limit barrier 170 is respectively located on the side of the two side plates close to the air inlet port 120; and/or, each limit barrier 170 is respectively located on the two side plates One side close to the second heat exchange port 150 . The first switching member 162 on the switch valve 160 stops rotating when it is in contact with the limit barrier 170, and under the action of the limit barrier 170, the air inlet port 120 is connected to the first heat exchange port 140 or the second heat exchange port 140 or the second heat exchange port. Hot port 150 switching.

The limit barrier 170 can reduce the resistance and friction generated during the rotation process of the first switch member 162 relative to the inner wall of the conversion body 110 , so that the rotation process is smoother, and can reduce the gas flow resistance and noise.

In some embodiments, as shown in FIG. 17 , the indoor conversion assembly 101 and the outdoor conversion assembly 102 further include multiple (for example, two) air volume adjustment parts 180, and the plane where the two air volume adjustment parts 180 are located is in the same plane as the first heat exchange port. 140 or the plane where the second heat exchange port 150 is located is parallel, and the two air volume adjustment parts 180 move relative to the first heat exchange port 140 and the second heat exchange port 150 respectively, for example, the two air volume adjustment parts 180 respectively rotate clockwise or turn counterclockwise. Furthermore, the opening area of the first heat exchange port 140 and the second heat exchange port 150 is adjusted to realize the air volume adjustment function.

As shown in FIG. 18 , the fresh air machine 1000 further includes a compressor 330 , a four-way valve 340 , a first heat exchanger 310 , a second heat exchanger 320 and an electronic expansion valve 350 . The sequentially connected compressor 330, four-way valve 340, first heat exchanger 310, electronic expansion valve 350 and second heat exchanger 320 form a refrigerant circuit, and the refrigerant circulates in the refrigerant circuit and passes through the first heat exchange circuit. The heat exchanger 310 and the second heat exchanger 320 exchange heat with the air respectively, so as to realize the cooling mode or the heating mode of the fresh air blower 1000 .

The compressor 330 is configured to compress refrigerant such that the low pressure refrigerant is compressed to form high pressure refrigerant.

The first heat exchanger 310 and the second heat exchanger 320 are configured to exchange heat between the air in the first heat exchange chamber 231 and the refrigerant transported in the first heat exchanger 310 , or to exchange heat between the air in the first heat exchange chamber 232 The air in the air exchanges heat with the refrigerant conveyed in the second heat exchanger 320 . For example, the first heat exchanger 310 works as a condenser in the cooling mode of the fresh air blower 1000, so that the refrigerant compressed by the compressor 330 dissipates heat to the air in the first heat exchange chamber 231 through the first heat exchanger 310 And condensation. The first heat exchanger 310 works as an evaporator in the heating mode of the fresh air blower 1000 , so that the decompressed refrigerant absorbs the heat of the air in the first heat exchange chamber 231 through the first heat exchanger 310 and evaporates.

In some embodiments, the first heat exchanger 310 and the second heat exchanger 320 further include heat exchange fins to expand the contact area between the air and the refrigerant transported in the first heat exchanger 310, thereby improving the first heat exchanger 310. The heat exchange efficiency between the air in the heat exchange chamber 231 and the refrigerant.

The electronic expansion valve 350 is connected between the first heat exchanger 310 and the second heat exchanger 320, and the pressure of the refrigerant flowing through the first heat exchanger 310 and the second heat exchanger 320 is adjusted by the opening of the electronic expansion valve 350 , so as to adjust the flow rate of refrigerant circulating between the first heat exchanger 310 and the second heat exchanger 320 . The flow rate and pressure of the refrigerant circulating between the outdoor heat exchanger and the indoor heat exchanger 400 will affect the heat exchange performance of the outdoor heat exchanger and the indoor heat exchanger 400 . The expansion valve 205 may be an electronic valve. The opening of the expansion valve 205 can be adjusted to control the flow and pressure of the refrigerant flowing through the expansion valve 205 .

The four-way valve 340 is connected in the refrigerant circuit, and the four-way valve 340 is configured to switch the flow direction of the refrigerant in the refrigerant circuit so that the fresh air blower 1000 performs a cooling mode or a heating mode.

In some embodiments, as shown in FIG. 8 , the fresh air machine 1000 further includes a controller 190 . The controller 190 is coupled to the driving device and the four-way valve 340, and the controller 190 is configured to: control the driving device to switch the communication state between the four ports, thereby controlling the heat exchange chamber through which the air intake air flow and the exhaust air flow flow , and/or, control the four-way valve 340 to switch the flow direction of the refrigerant in the first heat exchanger 310 and the second heat exchanger 320, so that the heating mode or cooling mode of the first heat exchanger 310 and the second heat exchanger 320 It matches the operation mode of the fresh air machine 1000.

The controller 190 can connect the indoor air return port 203 and the outdoor air exhaust port 204 with the first heat exchange chamber 231 and the second heat exchange chamber 232 by controlling the four ports of the indoor conversion assembly 101 or the outdoor conversion assembly 102 to communicate with each other. One of them is connected, and the outdoor air inlet 201 and the indoor air supply port 202 are connected with the other of the first heat exchange chamber 231 and the second heat exchange chamber 232 .

The controller 190 changes the flow direction of the refrigerant by controlling the reversing of the four-way valve 340 to realize the exchange of the cooling and heating functions of the two heat exchange chambers, and at the same time cooperates with the control of the ports between the indoor conversion assembly 101 and the outdoor conversion assembly 102. In the connected state, the heat exchange chamber through which the air intake air flow and the exhaust air flow flow can be switched, but the air conditioning operation mode remains unchanged. It is especially suitable for the scene where the fresh air fan is in the dehumidification mode or humidification mode, and when the adsorbent is fully saturated or dried, it is necessary to continuously switch the flow direction of the refrigerant, the flow direction of the intake air flow, and the flow direction of the exhaust air flow.

As shown in FIGS. 4 to 10 , the controller 190 in the present disclosure can turn the indoor conversion assembly 101 and/or the outdoor conversion assembly 101 and/or the outdoor conversion assembly 102 by controlling the first switch member 162 to rotate to different positions. The different ports of the component 102 are connected, so as to realize the reversing of the indoor conversion component 101 and/or the outdoor conversion component 102 . The controller 190 controls the driving device to drive the first switch member 162 to rotate. In this disclosure, the control method of the controller 190 is described by taking the indoor conversion assembly 101 as an example.

When the fresh air blower 1000 is started and running, the user manually controls to switch the operation mode, and the controller 190 receives a signal to determine that the indoor conversion component 101 and/or the outdoor conversion component 102 need to be reversed, or the controller 190 determines that it needs to be reversed by receiving a detection signal. When the direction is changed, the indoor conversion component 101 and/or the outdoor conversion component 102 are controlled to change direction.

As shown in FIG. 19 , the control method for the controller 190 to control the reversing of the indoor conversion assembly 101 and/or the outdoor conversion assembly 102 in the present disclosure may include the following steps:

Step S11 , the controller 190 determines the operating mode of the fresh air blower 1000 and the current position of the first switch 162 .

A method for determining the current position of the first switch element 162 may be: querying the current position of the first switch element 162 recorded in the memory. The memory may also store records of the rotation direction and rotation angle of the first switch member 162 , and calculate the current position of the first switch member 162 accordingly.

In step S12 , the controller 190 judges whether a reversing is required according to the matching state between the current position of the first switch 162 and the operation mode of the fresh air blower 1000 . If not, the fresh air machine 1000 executes the operation mode; if so, execute step S13.

Step S13, when the current position of the first switch 162 does not match the operating mode of the fresh air blower 1000, the controller 190 controls the indoor conversion assembly 101 and/or the outdoor conversion assembly 102 to switch directions;

According to the operating mode of fresh air blower 1000 during reversing, the controller 190 controls only one of the indoor conversion assembly 101 and the outdoor conversion assembly 102 to reversing, or the controller 190 controls the indoor conversion assembly 101 and the outdoor conversion assembly 102 to reversing at the same time.

As shown in Figure 20, the controller 190 controls the indoor conversion assembly 101 and/or the outdoor conversion assembly 102 through the action of the driving device. The reversing steps may include:

Step S14 , according to the operating mode of the fresh air machine 1000 and the current position of the first switch member 162 , the controller 190 determines the target position of the first switch member 162 .

Step S15 , according to the current position and the target position of the first switch member 162 , determine the rotation direction and the rotation angle of the first switch member 162 .

Step S16, according to the determined rotation direction and rotation angle, control the operation of the driving device to drive the first switch member 162 to rotate to the target position.

As shown in FIG. 21 and FIG. 22 , when the first switch member 162 is rotated to position I, the air inlet port 120 communicates with the first heat exchange port 140 , and the second heat exchange port 150 communicates with the air outlet port 130 . When the first switch member 162 is rotated to position II, the air inlet port 120 communicates with the second heat exchange port 150 , and the first heat exchange port 140 communicates with the air outlet port 130 .

For the conversion assembly limited by space, as shown in FIG. 21 , the first switch member 162 can only reciprocate within a certain angle range to realize switching between position I and position II. When the controller 190 receives the first reversing command or automatically determines that reversing is required, for example, the current position is position I and the target position is position II, the switch member rotates clockwise by a first preset angle to position II. When the controller 190 receives the second reversing command again or automatically determines that reversing is required, the current position is position II, the target position is position I, and the switch member rotates counterclockwise by a second preset angle to position I.

For a switch assembly with sufficient internal space, as shown in FIG. 22 , the first switch member 162 can also perform circular motion inside the switch assembly to switch between position I and position II. For example, as shown in FIG. 22 , the first switch member 162 can rotate 360 degrees around the rotation axis 161 in the flow cavity 111 . When the controller 190 receives the first reversing command or automatically judges that it is necessary to perform the reversing, assuming that the initial state is position I and the target position is position II, the first switch member 162 can first rotate counterclockwise by a third preset angle to position II , when the controller 190 receives the second reversing instruction again or automatically judges that the reversing needs to be performed, the first switch member 162 can continue to rotate counterclockwise by a fourth preset angle to position I, and the third preset angle is the same as the fourth preset angle. The setting angles can be different or the same. Of course, the switch between the position I and the position II of the first switch member 162 is not limited to the above-mentioned rotation method, and it can also rotate clockwise, or first rotate clockwise and then counterclockwise, or first rotate counterclockwise and then clockwise. The hour hand turns and turns to the target position.

After the first switch part 162 reaches the target position in step S16, the first switch part 162 can also be fixed to prevent the first switch part 162 from deviating from the target position under the action of the wind pressure, so that the isolation of the first switch part 162 The blocking effect is lost. The fixing of the first switch part 162 can be realized by abutting the first switch part 162 or locking the driving device. For example, an openable or closed limit spacer is installed to abut against the first switch part 162 to fix the first switch part 162 . At this time, before the driving device controls the operation of the driving device, it is necessary to first unfix the first switch member 162 and then control the operation of the driving device.

When the controller 190 receives the stop signal, the control method may further include the step of controlling the first switch member 162 to reset, and the reset position may be position I, position II or any position of other rotation angles. At this time, when the fresh air blower 1000 is started, the reset position (for example, position I) of the first switch member 162 is the current position of the first switch member 162 . It is convenient to determine the initial position of the first switch member 162 .

Therefore, as shown in FIG. 23 , taking the indoor conversion assembly 101 and the outdoor conversion assembly 102 in which the first switch member 162 reciprocates within a certain angle range as an example, the controller 190 controls the indoor conversion assembly 101 and/or the outdoor conversion assembly 102 The steps of reversing can also include resetting and fixing:

Step S21 , after the fresh air blower 1000 is turned on, the operating mode of the fresh blower 1000 and the current position of the first switch 162 are determined. At this time, the reset position of the first switch member 162 (for example, position I) is the current position of the first switch member 162 .

Step S22, according to the operating mode of the fresh air blower 1000 and the current position of the first switch 162, the controller 190 judges whether the indoor conversion assembly 101 and the outdoor conversion assembly 102 need to be reversed, if not, execute step S23; if yes, execute step S24 .

In step S23, after the fresh air machine 1000 runs for the first preset time, return to step S22.

In step S23, when the current position of the first switch member 162 coincides with the target position, the current position and the target position of the first switch member 162 are acquired again after the fresh air machine 1000 runs for a first preset time.

Step S24 , according to the operating mode of the fresh air machine 1000 and the current position of the first switch 162 , the controller 190 determines that the target position of the first switch 162 of the indoor conversion assembly 101 and/or the outdoor conversion assembly 102 is position II.

Step S25 , the controller 190 determines the rotation direction and rotation angle of the first switch member 162 according to the current position and the target position of the first switch member 162 .

Step S26, the controller 190 releases the fixation of the first switch member 162, starts the drive device, and the controller 190 controls the drive device to drive the first switch member 162 to rotate according to the determined rotation direction and rotation angle (for example, to rotate clockwise by a preset angle) , reaching the target position of the first switch part 162 (such as position II), the controller 190 starts to fix the first switch part 162, thereby completing a switch of the air flow direction.

Step S27, when the controller 190 determines that the moisture in the adsorbent is saturated or the moisture in the adsorbent is dried, the controller 190 releases the fixation of the first switch member 162, starts the driving device, and makes the drive device drive the first switch member 162 Reversely rotate the preset angle (for example, rotate the preset angle counterclockwise) to reach the target position (for example, position I), and the controller 190 starts to fix the first switch member 162, thereby completing another switching of the air flow direction.

In the above steps, when the controller 190 determines that the operation mode of the fresh air blower 1000 is changed, step S22 is re-executed.

As shown in FIG. 24, the step of the controller 190 controlling the reversing of the indoor conversion assembly 101 and/or the outdoor conversion assembly 102 may also include:

Step S28 , when the controller 190 receives the stop signal, determine the current position of the first switching member 162 .

In step S29, the controller 190 judges whether the current position of the first switching element 162 of the indoor conversion assembly 101 and the outdoor conversion assembly 102 is the reset position, if not, execute step S29; if yes, execute step S31.

In step S30 , the controller 190 determines the rotation direction and rotation angle of the first switch member 162 according to the current position and the reset position of the first switch member 162 .

Step S31, the controller 190 releases the fixation of the first switch member 162, starts the drive device, and the controller 190 controls the drive device to drive the first switch member 162 to rotate according to the determined rotation direction and rotation angle (for example, rotate counterclockwise by a preset angle ), reaching the reset position (for example, position I), the controller 190 starts fixing the first switch member 162 .

In step S32, the controller 190 controls the driving device to stop.

In some other embodiments, the controller 190 is further configured to control the working states of the air blower 410 , the exhaust fan 420 and the driving device, so that the driving device drives the first switch member 162 to rotate to the target position.

When the air blower 410 and the exhaust fan 420 are working, the gas is driven to flow, and the air flow passing through the indoor conversion assembly 101 will generate wind pressure on the first switching element 162 . If the pressure on both sides of the first switch part 162 is inconsistent, the first switch part 162 will rotate under the wind pressure, and the rotation direction is related to the current position of the first switch part 162 and the wind pressure difference on both sides.

Since both the blower fan and the exhaust fan are started when the fresh air blower 1000 is in normal operation, in order to prevent the first switch 162 from being rotated due to wind pressure interference, it cannot be kept in a position matching the operating state, so position I and position II respectively A limit stopper is provided to keep the first switch member 162 in this position after it is in place.

In the present disclosure, the controller 190 controls the rotation of the first switch member 162 in various ways, which may include:

1. Combination control of differential pressure and driving device.

As shown in FIG. 25 and FIG. 26 , the controller 190 controls the rotation of the first switch member 162 by combining the pressure difference and the driving device. Keep the air blower 410 and exhaust fan 420 open during this process. For example, the current position of the first switch member 162 is position I, and the target position is position II.

The upper side of the first switch member 162 at the position I is the air inlet, which flows through the second heat exchange port 150 and the air outlet port 130 . The second heat exchange port 150 is farther away from the air blower 410 , and the air velocity is relatively small; the air outlet port 130 is relatively close to the air blower 410 , and the air velocity is relatively high. Therefore, the gas pressure at the second heat exchange port 150 is higher, and the gas pressure at the air outlet port 130 is lower.

Similarly, the lower side of the first switching element 162 here is the exhaust air flow, which flows through the air inlet port 120 and the first heat exchange port 140 . The air inlet port 120 is closer to the exhaust fan 420 , and the air velocity is higher, and the first heat exchange port 140 is farther away from the exhaust fan, and the air velocity is lower. Therefore, the gas pressure at the air inlet port 120 is relatively small, and the gas pressure at the first heat exchange port 140 is relatively high.

Therefore, the first switching member 162 bears a clockwise force at position I.

The steps for the controller 190 to control the reversing of the indoor conversion assembly 101 and/or the outdoor conversion assembly 102 through the combination of the pressure difference and the driving device may include:

In step S41 , the controller 190 releases the fixation of the first switch member 162 . The first switching member 162 rotates to the first transitional position I' under the action of wind pressure.

The first switch element 162 at the first transition position I' is about to reach the edge of the air outlet port 130, and the two sides are about to communicate, and the effectiveness of wind pressure driving is reduced or lost. It is necessary for the controller 190 to control the action of the drive device to make the first switch element 162 continues to rotate towards the target position (position II).

The step of driving the first switching member 162 from the first transitional position I' to the target position (position II) further includes:

In step S42, the controller 190 controls the driving device to operate, and the driving device drives the first switch member 162 from the first transition position I' to the second transition position II' with the first torque.

The upper side of the first switch member 162 at the second transition position II′ is the exhaust air flow, which flows through the air inlet port 120 and the second heat exchange port 150 . The airflow velocity at the air inlet port 120 is relatively high and the gas pressure is relatively low, and the airflow velocity at the second heat exchange port 150 is relatively low and the gas pressure is relatively high.

Similarly, here, the lower side of the first switch member 162 is the air inlet, which flows through the first heat exchange port 140 and the air outlet port 130 . The gas flow velocity at the first heat exchange port 140 is relatively small, and the gas pressure is relatively high. The air velocity at the air outlet port 130 is relatively high, and the gas pressure is relatively low.

Therefore, the first switch member 162 bears the force in the counterclockwise direction.

In step S43, the controller 190 controls the driving device to drive the first switching member 162 from the second transition position II' to the target position (position II) with the second torque, the second torque being greater than the first torque. The controller 190 opens the limit barrier to fix the first switch member 162 at the current position.

When the controller 190 receives the reversing instruction again or automatically determines that reversing is required, the first switch member 162 is currently at position II, and the target position is position I.

When the first switch member 162 is at the second position II, as mentioned above, the first switch member 162 at the position II also bears a counterclockwise force. Therefore, controlling the first switch member 162 from the position II to the position I by the controller 190 may include the following steps:

In step S44 , the controller 190 releases the fixing of the first switch member 162 . The first switching member 162 rotates to the first transitional position II' under the action of wind pressure.

In step S45, the controller 190 controls the driving device to drive the first switching element 162 from the second transition position II' to the first transition position I' with the first torque.

In step S46, the controller 190 controls the driving device to drive the first switching member 162 from the second transition position II' to the target position (position II) with the second torque, the second torque being greater than the first torque. The controller 190 opens the limit barrier to fix the first switch member 162 at the current position.

2. Drive device control.

Adjusting the driving device according to the direction and magnitude of the force borne by the first switch member 162 can not only save energy, but also avoid failure of the first switch member 162 caused by too large or too small torque.

When the controller 190 receives the signal and determines that reversing is required, the first switch member 162 is at position I, and the target position is position II, as shown in FIG. The steps of 102 commutation can be:

In step S51, the controller 190 controls the blower 410 and the exhaust blower 420 to stop.

In step S52, the controller 190 releases the fixation of the first switch member 162 at the current position.

Step S53 , the controller 190 controls the driving device to operate, and the driving device drives the first switch member 162 to rotate to the target position (position II).

In step S54, the controller 190 opens the limit barrier to fix the first switch member 162 at the current position.

Or, as shown in FIG. 28 , the step in which the controller 190 controls the reversing of the indoor conversion assembly 101 and/or the outdoor conversion assembly 102 through the driving device may also be:

In step S61, the controller 190 controls the air blower 410 and the exhaust fan 420 to decelerate. The purpose is to reduce the pressure on both sides of the first switch part 162 and prevent the first switch part 162 from being damaged due to excessive pressure on both sides during the movement process.

In step S62 , the controller 190 releases the fixing of the first switch member 162 .

In step S63, the controller 190 controls the driving device to operate, and drives the first switch member 162 to rotate to the target position (position I).

In step S64, the controller 190 opens the limit barrier to fix the first switch member 162 at the current position.

3. Differential pressure control

As shown in FIG. 29 , the controller 190 can also adjust the rotation speeds of the air blower 410 and the exhaust fan 420 so that there is always a sufficient pressure difference on both sides of the first switch member 162 to drive the first switch member 162 to the target position.

The initial state of the first switch 162 is set to be at position I, and the target position is at position II. When receiving a reversing command or automatically judging that a reversing is required, the controller 190 controls the indoor switching assembly 101 and/or the outdoor switching component 101 through the pressure difference. The steps to convert component commutation can be:

In step S71, the controller 190 controls the air blower 410 to run normally and the exhaust fan 420 to slow down. The purpose is to increase the pressure difference on both sides of the first switch member 162, so that the first switch member 162 rotates clockwise by the driving force of the pressure difference on both sides.

Step S72 , the controller 190 releases the fixation of the first switch member 162 , the driving device does not start, and the first switch member 162 rotates counterclockwise by the driving force of the pressure difference on both sides of the first switch member 162 .

In step S73, the first switch member 162 reaches the target position (position II), and the controller 190 opens the limit barrier to fix the first switch member 162 at the current position to complete a reversing.

When the commutation command is received again or it is automatically judged that the commutation needs to be performed, the following steps can be performed:

In step S74, the controller 190 controls the exhaust fan 420 to run normally, and the air blower 410 to decelerate.

Step S75 , the controller 190 releases the fixation of the first switch member 162 , the driving device does not start, and the first switch member 162 rotates counterclockwise by the driving force of the pressure difference on both sides.

In step S76, the first switch member 162 reaches the target position (position I), and the controller 190 opens the limit barrier to fix the first switch member 162 at the current position to complete the reversing.

As follows, the first heat exchange port 140 of the indoor conversion assembly 101 is connected to the first heat exchange chamber 231, the second heat exchange port 150 of the indoor conversion assembly 101 is connected to the second heat exchange chamber 232, and the first heat exchange port 150 of the outdoor conversion assembly 102 The heat exchange port 140 is connected to the first heat exchange chamber 231, and the second heat exchange port 150 of the outdoor conversion assembly 102 is connected to the second heat exchange chamber 232 as an example to illustrate the operation modes of the fresh air blower 1000, such as cooling mode and heating mode. , dehumidification mode and humidification mode.

In cooling mode, the intake air flows through the heat exchange cavity where the evaporator is located, and the exhaust air flow flows through the heat exchange cavity where the condenser is located.

In the heating mode, the intake air flows through the heat exchange cavity where the condenser is located, and the exhaust air flow flows through the heat exchange cavity where the evaporator is located.

In the dehumidification mode, the flow direction of the intake air flow and the exhaust air flow is the same as that in the cooling mode. When the adsorbent absorbs moisture and reaches saturation, the flow direction of the refrigerant, the intake air flow and the exhaust air flow are switched simultaneously.

In the humidification mode, the flow direction of the air intake and exhaust air is the same as that in the heating mode. When the adsorbent releases moisture and is fully dried, the flow direction of the refrigerant, the air intake air and the exhaust air flow are switched at the same time.

As shown in FIG. 31 , the controller 190 controls the flow direction of the refrigerant in the four-way valve 340 , the first heat exchanger 310 acts as an evaporator, and the second heat exchanger 320 acts as a condenser. The controller 190 controls the driving device to connect the air inlet port 120 of the outdoor conversion assembly 102 with the first heat exchange port 140, connect the second heat exchange port 150 of the outdoor conversion assembly 102 with the air outlet port 130, and connect the second heat exchange port 150 of the outdoor conversion assembly 102 to the air outlet port 130. A heat exchange port 140 communicates with the first heat exchange chamber 231 where the first heat exchanger 310 is located, and a second heat exchange port 150 of the outdoor conversion assembly 102 communicates with the second heat exchange chamber 232 where the second heat exchanger 320 is located.

Connect the air inlet port 120 of the indoor conversion assembly 101 to the second heat exchange port 150 , and connect the first heat exchange port 140 of the indoor conversion assembly 101 to the air outlet port 130 . The first heat exchange port 140 of the indoor conversion assembly 101 communicates with the first heat exchange cavity 231 where the first heat exchanger 310 is located, and the second heat exchange port 150 of the indoor conversion assembly 101 communicates with the second heat exchange chamber 231 where the second heat exchanger 320 is located. The heat exchange chamber 232 is in communication.

The circulation path of the air inlet air is: outdoor air inlet 201, air inlet port 120 (outdoor), first heat exchange port 140 (outdoor), first heat exchange chamber 231 (evaporator), first heat exchange port 140 (indoor ), air outlet port 130 (indoor), indoor air supply port 202. The air that enters the room from outside releases heat to the refrigerant to cool down in this path.

The circulation path of the exhaust air flow is: indoor air return port 203, air inlet port 120 (indoor), second heat exchange port 150 (indoor), second heat exchange chamber 232 (condenser), second heat exchange port 150 (outdoor ), air outlet port 130 (outdoor), outdoor air outlet 204. The return air discharged from the room to the outside absorbs the heat released by the refrigerant in this path and heats up.

There are two ways to switch the operation mode of the fresh air machine 1000 from the cooling mode to the heating mode. The flow direction of the refrigerant can be changed independently, and the heat exchange chamber through which the incoming air flow passes remains unchanged. Or switch the flow direction of the air intake separately, and the flow direction of the refrigerant remains unchanged. In the present disclosure, the flow direction of the refrigerant is not changed as an example for illustration. As shown in FIG. 32 , the first heat exchanger 310 still works as an evaporator, and the second heat exchanger 320 works as a condenser. The controller 190 controls to connect the air inlet port 120 of the outdoor conversion assembly 102 with the second heat exchange port 150, connect the first heat exchange port 140 of the outdoor conversion assembly 102 with the air outlet port 130, and connect the first heat exchange port 140 of the outdoor conversion assembly 102 to the second heat exchange port 150. The heat port 140 communicates with the first heat exchange chamber 231 where the first heat exchanger 310 is located, and the second heat exchange port 150 of the outdoor conversion assembly 102 communicates with the second heat exchange chamber 232 where the second heat exchanger 320 is located.

The air inlet port 120 of the indoor conversion component 101 is communicated with the first heat exchange port 140 , and the second heat exchange port 150 of the indoor conversion component 101 is communicated with the air outlet port 130 . The first heat exchange port 140 of the indoor conversion assembly 101 communicates with the first heat exchange cavity 231 where the first heat exchanger 310 is located, and the second heat exchange port 150 of the indoor conversion assembly 101 communicates with the second heat exchange chamber 231 where the second heat exchanger 320 is located. The heat exchange chamber 232 is in communication.

The circulation path of the air intake air is: outdoor air inlet 201, air inlet port 120 (outdoor), second heat exchange port 150 (outdoor), second heat exchange cavity 232 (condenser), second heat exchange port 150 (indoor ), exhaust port 130 (indoor), indoor air supply port 202. The air that enters the room from the outside absorbs the heat released by the refrigerant in this path and heats up.

The circulation path of the exhaust air flow is: indoor air return port 203, air inlet port 120 (indoor), first heat exchange port 140 (indoor), first heat exchange cavity 231 (evaporator), first heat exchange port 140 (outdoor ), exhaust port 130 (outdoor), outdoor exhaust port 204. The return air discharged from the room to the outside releases heat to the refrigerant to cool down in this path.

The adsorbent 500 is arranged on the surfaces of the first heat exchanger 310 and the second heat exchanger 320 in the form of block, sheet, mesh wrapped particles and the like.

The adsorbent 500 can be placed in layers or attached to the surface of the first heat exchanger 310 or the second heat exchanger 320 in the form of coating.

The operation mode of the fresh air machine 1000 may also include a dehumidification mode and a humidification mode.

In the dehumidification mode, the intake air flows through the heat exchange chamber where the evaporator is located, and the exhaust air flow flows through the heat exchange chamber where the condenser is located. That is, the circulation path of the air intake airflow in this mode is the same as that in the cooling mode. In this disclosure, the first heat exchange port 140 of the indoor conversion assembly 101 shown in FIG. It communicates with the second heat exchange cavity 232 where the second heat exchanger 320 is located, the first heat exchanger 310 is used as an evaporator, and the second heat exchanger 320 is used as a condenser for illustration.

The refrigerant in the first heat exchanger 310 (evaporator) absorbs the heat in the air, and the moisture in the air condenses into water droplets, which are absorbed by the adsorption member 500 provided by the evaporator, and the air entering from outside is dried and sent indoors. The refrigerant in the second heat exchanger 320 (condenser) releases heat to the surrounding air, and the moisture in the adsorbent 500 of the condenser is evaporated, released into the air, and taken out to the outside by the airflow discharged to the outdoor direction.

When the adsorbent 500 set in the first heat exchanger 310 (evaporator) reaches saturation, the adsorbent 500 set in the second heat exchanger 320 (condenser) is dried at the same time, as shown in FIG. 32 , the controller 190 passes Control the reversing of the indoor conversion component 101 or the outdoor conversion component 102, so that the intake air flow passes through the second heat exchange chamber 232, and the exhaust air flow passes through the first heat exchange chamber 231. At the same time, the controller 190 controls the refrigerant reversing, so that the second heat exchange chamber The device 320 is an evaporator, and the first heat exchanger 310 is a condenser. The air entering from the outside is continuously dehumidified and dried by the adsorption member 500 of the second heat exchanger 320 and then delivered to the room.

In the humidification mode, the intake air flows through the heat exchange chamber where the condenser is located, and the exhaust air flow flows through the heat exchange chamber where the evaporator is located. That is to say, the circulation path of the air intake airflow in this mode is the same as that in the heating mode. In this disclosure, the first heat exchanger 310 shown in FIG. 32 is still used as the evaporator, and the second heat exchanger 320 is used as the condenser. The controller 190 controls to connect the air inlet port 120 of the outdoor conversion assembly 102 with the second heat exchange port 150, connect the first heat exchange port 140 of the outdoor conversion assembly 102 with the air outlet port 130, and connect the first heat exchange port 140 of the outdoor conversion assembly 102 to the second heat exchange port 150. The heat port 140 communicates with the first heat exchange chamber 231 where the first heat exchanger 310 is located, and the second heat exchange port 150 of the outdoor conversion assembly 102 communicates with the second heat exchange chamber 232 where the second heat exchanger 320 is located.

When the adsorption element 500 of the second heat exchanger 320 (condenser) is dried, it loses the ability to release moisture. At this time, the controller 190 controls the indoor conversion assembly 101 or the outdoor conversion assembly 102 to reverse, so that the incoming air flow flows through the second heat exchanger. A heat exchange chamber 231, while the first heat exchanger 310 is switched as a condenser, and the adsorption element 500 of the first heat exchanger 310 continues to release moisture into the fresh air.

The controller 190 is also configured to obtain the adsorption capacity of the adsorption member 500 or obtain the humidity of the fresh air input into the room. or, in the humidification mode, when the release capacity of the condenser 500 decreases or the humidity of the fresh air input into the room is lower than the second preset humidity, the controller 190 controls the four-way valve 340 to switch the flow direction of the refrigerant, and at the same time, The controller 190 controls the indoor conversion assembly 101 and the outdoor conversion assembly 102 to switch directions. The first preset humidity is smaller than the second preset humidity.

The adsorption capacity or release capacity of the adsorption member 500 can be determined by the duration of the intake air flow passing through the same heat exchange chamber continuously. The longer the time for the incoming air flow to pass through the same heat exchange chamber continuously, the lower the adsorption capacity or release capacity of the adsorption member 500 .

Those skilled in the art will appreciate that the disclosed scope of the present invention is not limited to the specific embodiments described above, and some elements of the embodiments can be modified and replaced without departing from the spirit of the present disclosure. The scope of the application is limited by the appended claims.

Claims

A fresh fan, comprising:

The shell has an outdoor air inlet, an outdoor air exhaust port, an indoor air supply port and an indoor air return port;

The first partition and the second partition are arranged in the housing, the first partition and the second partition are arranged along one side of the housing, the first partition and the The part of the casing close to the outdoor air inlet forms an outdoor cavity, and the second partition part and the part of the casing close to the indoor air supply port enclose an indoor cavity. The first partition, The second partition and the housing enclose a heat exchange cavity;

a third partition, the first end of the third partition is connected to the first partition, the second end of the third partition is connected to the second partition, and the third partition connects The heat exchange chamber is divided into a first heat exchange chamber and a second heat exchange chamber;

The first heat exchanger is arranged in the first heat exchange chamber;

The second heat exchanger is arranged in the second heat exchange chamber;

A plurality of adsorbents are arranged on the surface of the first heat exchanger and the second heat exchanger, and the plurality of adsorbents are configured to absorb moisture in the surrounding air when it is cold, and release the adsorbed moisture when it is hot ;and

The indoor conversion component is arranged in the inner cavity of the indoor;

The outdoor conversion assembly is arranged in the outdoor cavity, the indoor conversion assembly or the outdoor conversion assembly has a flow cavity and four ports, the flow cavity communicates with the four ports, and the four ports are respectively They are the air inlet port, the air outlet port, the first heat exchange port and the second heat exchange port; the four ports of the indoor conversion component are connected with the outdoor air exhaust port, the indoor air supply port, The heat chamber communicates with the second heat exchange chamber;

The four ports of the outdoor conversion assembly communicate with the outdoor air inlet, the indoor return air outlet, the first heat exchange chamber and the second heat exchange chamber respectively;

Wherein, the indoor conversion assembly or the outdoor conversion assembly includes:

a switching valve, arranged in the flow chamber, the switching valve is rotatable, and the switching valve is used to connect the air inlet port with one of the first heat exchange port or the second heat exchange port , communicating the air outlet port with the other of the first heat exchange port or the second heat exchange port, so as to change the flow direction of the air intake airflow and the flow direction of the air outlet airflow.
The fresh air machine according to claim 1, wherein,

The switching valve includes:

axis of rotation; and

The first switch part is connected to the rotation shaft, and the first switch part rotates around the rotation shaft so that the air inlet port is connected to the first heat exchange port or the second heat exchange port One of them communicates, and the air outlet port communicates with the other of the first heat exchange port or the second heat exchange port, thereby changing the flow direction of the air inlet airflow and the air outlet airflow.
The fresh air blower according to claim 2, wherein the indoor conversion component or the outdoor conversion component further comprises:

a driving device, the output shaft of the driving device is connected to the first switching element;

The fresh air machine also includes:

A controller is coupled to the driving device, and the controller is further configured to control the driving device to drive the first switch to rotate.
The fresh air machine according to claim 3, wherein the controller is further configured to:

acquiring the current position and the target position of the first switch member;

determining the rotation direction and rotation angle of the driving device according to the current position and the target position of the first switch member;

According to the rotation direction and the rotation angle, the driving device is controlled to drive the first switch member to rotate to the target position.
The fresh air machine according to claim 3, wherein the controller is further configured to:

When the current position of the first switch part coincides with the target position, the current position and the target position of the first switch part are acquired again after the fresh air blower runs for a first preset time;

determining the rotation direction and rotation angle of the driving device according to the current position and the target position of the first switch member;

According to the rotation direction and the rotation angle, the driving device is controlled to drive the first switch member to rotate to the target position.
The fresh air machine according to claim 3, wherein the controller is further configured to:

After the first switch part rotates to the target position, the first switch part is fixed.
The fresh air machine according to claim 3, wherein the controller is further configured to:

controlling the first switch member to rotate to the first transition position under the action of wind pressure;

controlling the driving device to drive the switch member to rotate from the first transition position to the second transition position with a first torque, so as to overcome the effect of the wind pressure;

The driving device is controlled to drive the switch member from the second transition position to the target position with a second torque, the second torque being greater than the first torque.
The fresh air machine according to claim 7, further comprising:

An exhaust fan is arranged on a side of the housing conversion assembly close to the outdoor air outlet, and is used to exhaust air to the outside through the outdoor air outlet; and

A blower is arranged in the housing on a side close to the indoor air supply port, and is used to supply air to the room through the indoor air supply port.
The fresh air blower according to claim 8, wherein the controller is respectively coupled to the exhaust fan and the blower, and the controller is further configured to:

Before the first switching member rotates to the first transition position under the action of wind pressure, the exhaust fan and the blower are controlled to stop or decelerate.
The fresh air machine according to claim 3, wherein the controller is further configured to:

When the controller receives a shutdown signal, acquire the current position and reset position of the switch;

determining the rotation direction and rotation angle of the driving device according to the current position and the reset position of the switch member;

According to the rotation direction and the rotation angle, the driving device is controlled to drive the first switch member to rotate to the reset position.
The fresh air machine according to claim 3, further comprising:

a compressor configured to compress a refrigerant;

an expansion valve configured to adjust the flow rate of the refrigerant, the compressor, the first heat exchanger, the expansion valve and the second heat exchanger are connected in sequence to form a refrigerant circuit, the first One of the heat exchanger and the second heat exchanger serves as a condenser, and the other of the first heat exchanger and the second heat exchanger serves as an evaporator;

The four-way valve is connected in the refrigerant circuit and is configured to switch the flow direction of the refrigerant in the refrigerant circuit, the controller is coupled to the four-way valve and is configured to control the four-way valve The through valve switches the flow direction of the refrigerant in the refrigerant circuit.
The fresh air machine according to claim 11, wherein the controller is further configured to:

When the four-way valve changes direction, the moisture in the adsorbent is saturated, or the moisture in the adsorbent is dried, acquire the current position and the target position of the first switch;

determining the rotation direction and rotation angle of the driving device according to the current position and the target position of the first switch member;

According to the rotation direction and the rotation angle, the driving device is controlled to drive the first switch member to rotate to the target position.
The fresh air machine according to claim 12, wherein the controller is further configured to:

Controlling the indoor conversion assembly or the outdoor conversion assembly to switch the communication state between the four ports, so that the indoor air supply port communicates with the heat exchange chamber where the evaporator is located, so as to deliver cold air indoors and reduce The humidity of the air in the small room.
The fresh air machine according to claim 12, wherein the controller is further configured to:

Controlling the indoor conversion assembly or the outdoor conversion assembly to switch the communication state between the four ports, so that the indoor air supply port communicates with the heat exchange chamber where the condenser is located, so as to deliver hot air indoors and improve Humidity of the indoor air.
The new air blower according to claim 3, wherein the switching valve comprises:

The second switch element and the third switch element arranged crosswise, the second switch element and the third switch element respectively separate the four ports, so as to change the communication states of the four ports.
The fresh air machine according to claim 15, wherein the switching valve further comprises:

a plurality of switching valve ports arranged along the length direction of the second switching element or the third switching element; and

A plurality of switch parts are rotatably connected with the second switch part or the third switch part, and the plurality of switch parts are used to open or close the plurality of switch valve ports to change the four ports. connected state.
The fresh air machine according to claim 16, wherein the controller is further configured to:

Control the opening of each switch valve port on the second switch member, and close each switch valve port on the third switch member, so that the air inlet port communicates with the first heat exchange port, and the air outlet port communicates with the first heat exchange port. a port in communication with the second heat exchange port; or

Control the switch valve ports on the second switch member to close, and the switch valve ports on the third switch member to open, so that the air inlet port communicates with the second heat exchange port, and the air outlet port communicates with the second heat exchange port. A port communicates with the first heat exchange port.
The fresh air blower according to claim 2, wherein the air inlet port and the air outlet port are arranged on the two opposite side plates, and the first heat exchange port and the second heat exchange port The ports are arranged in a direction perpendicular to the bottom surface of the housing.
The fresh air machine according to claim 18, wherein the indoor conversion component or the outdoor conversion component further comprises:

A plurality of position-limiting barriers are arranged on the inner walls of the plurality of side plates, and the plurality of position-limiting barriers abut against the first switch part to stop the rotation of the first switch part. A position-limiting barrier is located on the side of the inner wall of the plurality of side plates close to the air inlet port, and/or, the plurality of position-limiting barriers is located on the inner wall of the plurality of side plates close to the second On one side of the heat exchange port, the inner walls of the plurality of side plates have a plane.
The fresh air blower according to claim 2, wherein the indoor conversion component or the outdoor conversion component further comprises:

A plurality of air volume adjustment parts connected to the rotation shaft, the plane where the multiple air volume adjustment parts are located is parallel to the plane where the first heat exchange port or the second heat exchange port is located, and the plurality of air volume adjustment parts It is used to rotate around the rotation axis to adjust the opening area of the first heat exchange port or the second heat exchange port.