Temperature and humidity exchange unit, temperature and humidity exchange core and fresh air system

Abstract

This invention provides a temperature and humidity exchange unit, a temperature and humidity exchange core, and a fresh air system. The temperature and humidity exchange unit is used to stack with other temperature and humidity exchange units. The unit includes a base sheet and an airtight and breathable membrane. The base sheet has a microporous structure penetrating both sides. The airtight and breathable membrane is disposed on at least one surface of the base sheet. The base sheet is shaped to have at least an installation area and a media flow area. The media flow area forms several strip-shaped protrusions and concave surfaces. These protrusions and concave surfaces, together with the strip-shaped protrusions and concave surfaces or planes of the media flow areas of adjacent temperature and humidity exchange units, form a closed flow channel. The closed flow channel connects the inlet and outlet located at the edge of the base sheet. According to this invention, the structure is simplified, manufacturing costs are reduced, rigid partitions are avoided for support, and the weight of the temperature and humidity exchange core is significantly reduced.

Description

Technical Field

[0001] This utility model relates to the field of air conditioning, and in particular to a temperature and humidity exchange unit, a temperature and humidity exchange core, and a fresh air system. Background Technology

[0002] A fresh air system is used to exchange indoor and outdoor air, and can also regulate indoor temperature and humidity. For example, in winter, when the indoor temperature is higher than the outdoor temperature, the fresh air system can raise the temperature of the incoming air; in summer, when the indoor temperature is lower than the outdoor temperature, the fresh air system can lower the temperature of the incoming air. The temperature and humidity exchange core is an important component of the fresh air system, formed by stacking several plate-shaped exchange units. The inlet and outlet airflow channels are separated by each plate-shaped exchange unit. The plate-shaped exchange units can exchange temperature between the inlet and outlet airflow channels, thereby avoiding excessive temperature differences between the incoming air and the indoor environment, which would affect the perceived indoor temperature.

[0003] However, a humidity difference exists between outdoor and indoor air. To facilitate humidity exchange between the inlet and outlet channels, existing technologies form inlet and outlet channels on rigid partitions, which serve a supporting function. An airtight and breathable membrane is placed between adjacent stacked rigid partitions to achieve humidity exchange. For example, in the polymer antibacterial and breathable membrane total heat exchange core disclosed in patent CN209263286U, an antibacterial and breathable membrane is placed between adjacent stacked rigid heat exchange plates. However, this type of rigid partition exchange unit suffers from complex structure, high manufacturing cost, and heavy weight, making it inconvenient to transport. Utility Model Content

[0004] This utility model provides a temperature and humidity exchange unit, a temperature and humidity exchange core, and a fresh air system.

[0005] Specifically, this utility model is achieved through the following technical solution:

[0006] In a first aspect, this utility model provides a temperature and humidity exchange unit for stacking with other temperature and humidity exchange units, the temperature and humidity exchange unit comprising:

[0007] A base sheet having a microporous structure penetrating both sides;

[0008] An airtight and moisture-permeable membrane is disposed on at least one surface of the base sheet;

[0009] The base sheet is shaped to have at least an installation area and a medium flow area. The base sheet forms several strip-shaped protrusions and concavities in the medium flow area. The strip-shaped protrusions and concavities together with the strip-shaped protrusions and concavities or planes of the medium flow areas of other adjacent temperature and humidity exchange units form a closed flow channel. The closed flow channel connects the inlet and outlet located at the edge of the base sheet.

[0010] In some embodiments, the mounting area is formed with an uneven structure for interlocking with the uneven structure of the mounting area of ​​an adjacent temperature and humidity exchange unit.

[0011] In some embodiments, the strip-shaped protrusions have a smooth profile on the closed flow channel cross-section.

[0012] In some embodiments, the strip-shaped protrusions and concave sections have a broken profile on the closed flow channel cross section.

[0013] In some embodiments, the mounting area is planar, or the base sheet is selected from any one of microporous membranes, paper, PP membranes, PE membranes, nonwoven fabrics, and electrospun fibers.

[0014] In some embodiments, the base sheet has a connection area located at the top and bottom of the strip-shaped protrusions, which connects to the strip-shaped protrusions or planes of adjacent other temperature and humidity exchange units.

[0015] Secondly, this utility model embodiment provides a temperature and humidity exchange core, including a plurality of temperature and humidity exchange units as described in the first aspect. The plurality of temperature and humidity exchange units are stacked on each other to form a columnar temperature and humidity exchange core. The strip-shaped concave and convex features of each temperature and humidity exchange unit together with the strip-shaped concave and convex features or planes of adjacent temperature and humidity exchange units to form a closed flow channel, thereby forming a multi-layer closed flow channel structure. The medium temperature and humidity in adjacent layers of the multi-layer closed flow channel structure are different.

[0016] In some embodiments, the adjacent layers of the multi-layer closed flow channel structure may extend in the same or different directions.

[0017] In some embodiments, the temperature and humidity exchange unit is triangular, square, polygonal, circular, or irregular in shape. If the temperature and humidity exchange unit is triangular, square, polygonal, or irregular in shape, the inlet and outlet of the closed flow channel structure with different media temperature and humidity are located at different edges.

[0018] Thirdly, this utility model embodiment provides a fresh air system, including the temperature and humidity exchange core as described in the second aspect.

[0019] According to an embodiment of this utility model, by providing an air-barrier and moisture-permeable membrane on at least one side surface of the base sheet, the base sheet and the air-barrier and moisture-permeable membrane become one. Through the medium flow area formed by the deformation of adjacent base sheets, a closed flow channel for air flow can be formed together, so that the outline of the jointly formed closed flow channel itself has the function of air-barrier and moisture-permeable, thus eliminating the need to set an additional air-barrier and moisture-permeable membrane, achieving the effect of simplified structure and reduced manufacturing cost. At the same time, since the use of rigid partitions for support is avoided, the weight of the temperature and humidity exchange core is greatly reduced.

[0020] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and do not limit this application. Attached Figure Description

[0021] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application.

[0022] Figure 1 This is a schematic diagram of a temperature and humidity exchange core in one embodiment of the present invention;

[0023] Figure 2 This is a schematic diagram of the temperature and humidity exchange unit in one embodiment of the present invention before its deformation and transformation.

[0024] Figure 3 This is a schematic diagram of the deformed state of the temperature and humidity exchange unit in one embodiment of the present invention.

[0025] Figure 4 This is a schematic diagram of the temperature and humidity exchange units stacked together in the first embodiment of this utility model;

[0026] Figure 5 This is a schematic diagram of the stacked temperature and humidity exchange units in the second embodiment of this utility model;

[0027] Figure 6 This is a schematic diagram of the stacked temperature and humidity exchange units in the third embodiment of this utility model;

[0028] Figure 7 This is a schematic diagram of the stacked temperature and humidity exchange units in the fourth embodiment of this utility model;

[0029] Figure 8 This is a schematic diagram of the stacked temperature and humidity exchange units in the fifth embodiment of this utility model.

[0030] Figure label:

[0031] 01: Temperature and humidity exchange unit; 02: Temperature and humidity exchange core;

[0032] 10: Base sheet; 11: Installation area; 12: Media flow area; 121: Enclosed flow channel; 122: Connection area;

[0033] 20: Air-barrier and moisture-permeable membrane. Detailed Implementation

[0034] The present invention will now be discussed with reference to several embodiments. It should be understood that these embodiments are discussed only to enable those skilled in the art to better understand and thus implement the present invention, and are not intended to imply any limitation on the scope of the present invention.

[0035] As used herein, the term "comprising" and its variations are to be interpreted as open-ended terms meaning "including but not limited to"; the terms "embodiment" and "one embodiment" are to be interpreted as "at least one embodiment"; the term "another embodiment" is to be interpreted as "at least one other embodiment"; the terms "first," "second," etc., may refer to different or the same objects; the term "setup" is not limited to direct or indirect connections, nor to specific connection methods. Other explicit and implicit definitions may also be included below.

[0036] Specific numerical values ​​or ranges may be mentioned in the following description. It should be understood that these values ​​and ranges are merely exemplary and may be helpful in putting the ideas of this invention into practice. However, the description of these examples is not intended to limit the scope of this invention in any way. These values ​​or ranges may be set differently depending on the specific application scenario and requirements.

[0037] As mentioned above, existing rigid-partition exchange units suffer from complex structures, high manufacturing costs, and heavy weight, making them inconvenient to transport. The temperature and humidity exchange unit, temperature and humidity exchange core, and fresh air system proposed in this invention at least partially solve the above problems. The following will refer to... Figures 1 to 7 This document describes the structure and working principle of the temperature and humidity exchange unit, temperature and humidity exchange core, and fresh air system according to exemplary embodiments of the present invention. It should be noted that the temperature and humidity exchange unit and temperature and humidity exchange core of the present invention can be used not only in fresh air systems, but also in gas exchange systems in any household, public place, or industrial location.

[0038] Taking a fresh air system as an example, a fresh air system includes at least an inlet flow channel and an outlet flow channel connected to the outside, as well as an inlet flow channel and an outlet flow channel connected to the inside. The two inlet flow channels are connected by a temperature and humidity exchange core, and the two outlet flow channels are also connected by a temperature and humidity exchange core, so that the inlet air flowing in the inlet flow channel and the outlet air flowing in the outlet flow channel exchange temperature and humidity in the temperature and humidity exchange core.

[0039] The temperature and humidity exchange core of this utility model embodiment is composed of several temperature and humidity exchange units stacked on top of each other, with an inlet flow channel and an outlet flow channel spaced on both sides of each temperature and humidity exchange unit. For example, as shown... Figure 1 As shown, each temperature and humidity exchange unit is set as a square, and the resulting temperature and humidity exchange core is correspondingly a cube. In other examples, each temperature and humidity exchange unit can also be set as a triangle, rectangle, polygon, circle or other irregular shape, and the resulting temperature and humidity exchange core is correspondingly columnar.

[0040] When the temperature and humidity exchange unit is configured as a triangle, square, polygon, or irregular shape, the inlet of the inlet flow channel and the inlet of the outlet flow channel can be located on the same edge or on different edges. For example, such as... Figure 1 As shown, solid arrows indicate the airflow direction in the inlet channel, and dashed arrows indicate the airflow direction in the outlet channel. The inlet of the inlet channel is located at the left edge of the diagram, and the outlet is located at the right edge. Similarly, the inlet of the outlet channel is located at the right edge of the diagram, and the outlet is located at the left edge. In another example, the inlet of the inlet channel may also be located at the same edge as the inlet of the outlet channel.

[0041] The temperature and humidity exchange unit of this invention is composed of a base sheet and an airtight and moisture-permeable membrane, such as... Figure 2 As shown, the air-barrier and moisture-permeable membrane can be installed on both sides of the base sheet. Figure 2 (As shown in the illustration above), the breathable membrane can also be installed on one side of the base sheet. Figure 2 (See the legend below).

[0042] The base sheet should have a microporous structure that allows passage between its two sides. In one embodiment, the base sheet is prepared from any of the following: microporous membrane, paper, PP membrane, PE membrane, nonwoven fabric, or electrospun yarn; or it can be prepared by stacking and combining any combination of these materials. These materials themselves possess a microporous structure, allowing moisture to pass through, while also having a thin profile and variable shapeability. For example, the thickness of the base sheet is selected to be 130-400 μm.

[0043] In one embodiment, the side of the base sheet is designed to have at least an installation area and a media flow area. The division of the installation area and the media flow area is based on their specific functions. Specifically, the installation area is used to connect with other temperature and humidity exchange units and the frame structure of the temperature and humidity exchange core. The media flow area is used to form a closed flow channel together with the media flow areas of other temperature and humidity exchange units.

[0044] In one embodiment, the installation area is set as a plane, such as... Figures 3-8 As shown, the planar mounting area is fitted with the adjacent temperature and humidity exchange unit. The planar mounting area simplifies the manufacturing process and maximizes the bonding area between the mounting areas of adjacent temperature and humidity exchange units, thereby improving the connection strength.

[0045] In one embodiment, the mounting area can also be configured with a concave-convex structure. Although the concave-convex structure reduces the contact area between adjacent temperature and humidity exchange units, it itself can improve the structural strength of the mounting area. For example, the concave-convex structures of adjacent temperature and humidity exchange units cooperate with each other, that is, each convex structure of the mounting area of ​​one temperature and humidity exchange unit can be aligned and embedded in each concave structure of the mounting area of ​​another temperature and humidity exchange unit, thereby obtaining the limiting capability along the horizontal direction of the temperature and humidity exchange unit.

[0046] In one embodiment, the medium flow area is configured with several strip-shaped protrusions and concavities. The strip-shaped protrusions and concavities of each temperature and humidity exchange unit form part of the contour of a closed flow channel, and the strip-shaped protrusions and concavities of adjacent temperature and humidity exchange units form another part of the contour, so that two adjacent temperature and humidity exchange units together form a closed flow channel. For example, Figure 3 As shown, the strip-shaped concave and convex shapes can be circular ( Figure 3 First illustration in the middle), square ( Figure 3 Second illustration in the middle), trapezoid ( Figure 3 The third illustration in the middle), triangle ( Figure 3 (See the fourth illustration in the figure). It can also be rectangular, elliptical, polygonal, or other irregular shapes (not shown in the figure). Among them, circles and ellipses have smooth contours, which can reduce airflow resistance, while triangles, squares, etc. have folded contours, which can improve the structural strength of the temperature and humidity exchange unit.

[0047] In one embodiment, adjacent temperature and humidity exchange units are arranged in a strip-like, mirror-like pattern, and are interconnected and sealed through a connecting area to form a closed flow channel. For example, as shown... Figures 4-7 As shown (X and O represent air flowing in opposite directions), the strip-shaped uneven surface is equipped with an airtight and moisture-permeable membrane, preventing air from passing between the closed flow channels flowing in opposite directions, but allowing for the exchange of temperature and humidity. In another example, such as... Figure 8 As shown, a flat temperature and humidity exchange unit is inserted between the strip-shaped uneven temperature and humidity exchange units. That is, the medium flow area of ​​the temperature and humidity exchange units is set as a flat structure. They can also be stacked to form a closed flow channel. In this case, the cross-sectional area of ​​the closed flow channel is only the same as the cross-sectional area of ​​the strip-shaped uneven temperature and humidity exchange units.

[0048] In one embodiment, adjacent temperature and humidity exchange units are interconnected in the connection area, and the connection method can be adhesive bonding, welding, sewing, riveting, screwing, etc.

[0049] In one embodiment, the gas-barrier and moisture-permeable membrane is a conventional polymer gas-barrier and moisture-permeable membrane. For example, the polymer may contain at least one polar functional group selected from -OH, -SH, -COOH, -OR, -COOR, -PO3H2, -SO3H or -NH2, thereby allowing water molecules to permeate from the side with high concentration to the side with low concentration, while the gas is blocked.

[0050] In one embodiment, the air-barrier and moisture-permeable membrane can be attached to the side of the base sheet by means of impregnation, spraying, coating, etc., and then the temperature and humidity exchange unit can be formed into the installation area and the medium flow area by thermoplastic molding.

[0051] The description of the embodiments herein, including any references to directions and orientations, is for ease of description only and should not be construed as limiting the scope of protection of this utility model. The description of preferred embodiments involves combinations of features, which may exist independently or in combination; this utility model is not particularly limited to the preferred embodiments. The scope of this utility model is defined by the claims.

[0052] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A heat and moisture exchange unit for mutual stacking with other heat and moisture exchange units, characterized in that, Each of the aforementioned temperature and humidity exchange units includes: A base sheet (10) having a microporous structure penetrating both sides; An airtight and moisture-permeable membrane (20) is disposed on at least one side surface of the base sheet (10); The base sheet (10) is deformed to have at least an installation area (11) and a medium flow area (12). The base sheet (10) forms a plurality of strip-shaped protrusions and concavities in the medium flow area (12). The strip-shaped protrusions and concavities together with the strip-shaped protrusions and concavities or planes of the medium flow area (12) of the adjacent other temperature and humidity exchange units form a closed flow channel. The closed flow channel is connected between the inlet and outlet located at the edge of the base sheet (10).

2. The temperature and humidity exchange unit according to claim 1, characterized in that, The mounting area (11) has a concave-convex structure for interlocking with the concave-convex structure of the mounting area of ​​the adjacent temperature and humidity exchange unit.

3. The temperature and humidity exchange unit according to claim 1, characterized in that, The strip-shaped protrusions and concave surfaces have a smooth profile on the closed flow channel cross-section.

4. The temperature and humidity exchange unit according to claim 1, characterized in that, The strip-shaped protrusions and concave sections form a broken-line profile on the cross-section of the closed flow channel.

5. The temperature and humidity exchange unit according to claim 1, characterized in that, The installation area (11) is planar, or the base sheet (10) is selected from any one of microporous membrane, paper, PP membrane, PE membrane, non-woven fabric, and electrospinning.

6. The temperature and humidity exchange unit according to claim 1, characterized in that, The base sheet (10) has a connecting area (13) located at the top and bottom of the strip-shaped protrusions and is connected to the strip-shaped protrusions or planes of other adjacent temperature and humidity exchange units through the connecting area (13).

7. A temperature and humidity exchange core, characterized in that, It includes several temperature and humidity exchange units as described in any one of claims 1-6, and the several temperature and humidity exchange units are stacked to form a columnar temperature and humidity exchange core. The strip-shaped concave and convex features of each temperature and humidity exchange unit together with the strip-shaped concave and convex features or planes of adjacent temperature and humidity exchange units to form a closed flow channel, thereby forming a multi-layer closed flow channel structure. The medium temperature and humidity in adjacent layers of the multi-layer closed flow channel structure are different.

8. The temperature and humidity exchange core according to claim 7, characterized in that, The adjacent layers of the multi-layer closed flow channel structure may extend in the same or different directions.

9. The temperature and humidity exchange core according to claim 8, characterized in that, The temperature and humidity exchange unit is triangular, square, polygonal or circular. If the temperature and humidity exchange unit is triangular, square or polygonal, the inlet and outlet of the closed flow channel structure with different medium temperature and humidity are located at different edges.

10. A fresh air system, characterized in that, Includes the temperature and humidity exchange core as described in claim 9.

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