Flame-retardant heat and mass transfer core

Abstract

The utility model relates to the technical field of heat exchange, in particular to a flame-retardant heat and mass transfer core which is formed by alternately overlapping and combining a plurality of single-layer structures. The single-layer structure comprises a frame, a plurality of separation ribs arranged in the frame, and a flame-retardant heat exchange membrane arranged on the separation ribs; the separation ribs in the adjacent single-layer structures are distributed in a 180-degree mirror image mode and attached to each other to form a plurality of closed air channels. The air duct comprises an exhaust duct and a fresh air duct; each separation rib comprises an inlet section located at the inlet end of the air duct, an outlet section located at the outlet end of the air duct and a middle section located in the middle of the air duct; the frame, the inlet section and the outlet section are integrally injection-molded by adopting a flame-retardant material; the middle section is detachably connected with the inlet section and the outlet section; the flame-retardant heat exchange membrane comprises a heat exchange membrane body, flame-retardant layers located on the two faces of the heat exchange membrane body and bonding layers used for bonding the heat exchange membrane body and the flame-retardant layers. The heat and mass transfer core body provided by the utility model has excellent moisture permeability and flame retardant property.

Description

TECHNICAL FIELD

[0001] The utility model relates to heat exchange technical field especially relates to a kind of flame-retardant heat transfer mass core. BACKGROUND

[0002] Heat transfer mass core is assembled by high molecular film material and air duct structure, high molecular film material is used as air flow partition plate, and it plays the role of gas permeable wet, it is the key material of heat transfer mass core;Air duct structure is formed by resin injection molding, and it plays the role of balancing temperature and humidity field, air flow resistance in core body.Membrane material and air duct structure are flammable high molecular materials, in combustion process, the toxic smoke and flame released by high molecular material exist huge security risks. SUMMARY

[0003] In view of one or more technical problems of prior art, the utility model provides a kind of flame-retardant heat transfer mass core, the flame-retardant heat transfer mass core has excellent moisture permeability and flame-retardant performance, can satisfy the demand of civil residential building and large public building to flame-retardant performance.

[0004] The utility model provides a kind of flame-retardant heat transfer mass core, the flame-retardant heat transfer mass core is alternately overlapped by multiple single-layer structures combination;

[0005] The single-layer structure includes frame, multiple partitioning rib strips arranged in the frame, and flame-retardant heat exchange film arranged on the partitioning rib strip;Partitioning rib strips in adjacent single-layer structure are 180 ° mirror image distribution, and mutually adhere to form multiple closed air ducts;The air duct includes exhaust air duct and fresh air duct;The partitioning rib strip includes inlet section at air duct inlet end, outlet section at air duct outlet end and intermediate section at air duct middle part;The frame, the inlet section and the outlet section are integrally injection molded using flame-retardant material;The intermediate section is detachably connected with the inlet section and the outlet section;

[0006] The flame-retardant heat exchange film includes heat exchange film, flame-retardant layer on both sides of the heat exchange film and adhesive layer for bonding the heat exchange film and flame-retardant layer.

[0007] In a possible design, the intermediate section is straight line structure;And / or

[0008] The intermediate section is detachably buckled with the inlet section and the outlet section.

[0009] In a possible design, the thickness of the heat exchange film is 20-50 μm.

[0010] In a possible design, the thickness of the adhesive layer is 10-50 μm.

[0011] In a possible design, the adhesive layer is one of a dot array structure, a stripe structure and a full coating structure.

[0012] In a possible design, the thickness of the fire-retardant layer is no more than 0.3 mm.

[0013] In a possible design, the fire-retardant layer is a fire-resistant felt.

[0014] In a possible design, the adhesive layer is a glue layer.

[0015] In a possible design, the water absorption rate of the fire-resistant felt is 7-10%.

[0016] The density of the fire-resistant felt is 200-220 kg / m 3 ; and / or

[0017] The slenderness ratio of the fire-resistant felt is 80-120:1.

[0018] In a possible design, the frame is provided with positioning columns and positioning holes for connecting the single-layer structures.

[0019] In a possible design, the single-layer structure is a hexagonal structure.

[0020] Compared with the prior art, the present application has at least the following beneficial effects:

[0021] The fire-retardant layer is compounded on both sides of the heat exchange film to improve the fire-retardant property while ensuring the moisture permeability of the heat exchange film; the frame near the air inlet and outlet, the inlet section and the outlet section of the partition rib are integrally injection molded by using a fire-retardant material, so that the fire-retardant property of the heat and mass transfer core is further improved; the fire-retardant heat and mass transfer core provided by the present application has excellent moisture permeability and fire-retardant property, and can meet the demand for fire-retardant property of civil residential buildings and large public buildings.

[0022] The middle section of the partition rib is separately formed and assembled with the inlet section and the outlet section of the partition rib by a detachable connection mode, so that the deformation of the middle section of the partition rib in the integral injection molding process of the traditional air duct framework is overcome, the forming precision is improved, the air leakage rate of the heat and mass transfer core obtained after assembly is low, the air tightness is good, and the heat exchange efficiency is high. In addition, when the middle section of the partition rib is damaged during use, only the corresponding middle section needs to be replaced, and the whole needs not to be replaced, so that the service life of the heat and mass transfer core is effectively prolonged, and the use cost is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0023] In order to more clearly illustrate the technical solutions of the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the description of the embodiments or the prior art. Obviously, the drawings described below are some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor on the premise of the drawings.

[0024] Fig. 1 is a structural schematic diagram of a single-layer structure in a flame-retardant heat and mass transfer core provided by the present application;

[0025] Fig. 2 is a schematic diagram of an air duct structure formed after stacking of adjacent single-layer structures in a flame-retardant heat and mass transfer core provided by the present application;

[0026] Fig. 3 is a sectional schematic diagram of a flame-retardant heat exchange film in a flame-retardant heat and mass transfer core provided by the present application;

[0027] Fig. 4 is a schematic diagram of a dot matrix structure adhesive layer in a flame-retardant heat exchange film provided by the present application;

[0028] Fig. 5 is a schematic diagram of a stripe structure adhesive layer in a flame-retardant heat exchange film provided by the present application;

[0029] Fig. 6 is a schematic diagram of a full-coating structure adhesive layer in a flame-retardant heat exchange film provided by the present application.

[0030] Reference signs:

[0031] 1-frame; 11-positioning column; 12-positioning hole; 2-separation rib; 21-inlet section; 22-middle section; 23-outlet section; 24-dismountable buckle; 3-flame-retardant heat exchange film; 31-heat exchange film; 32-adhesive layer; 33-flame-retardant layer; 41-exhaust air duct; 42-fresh air duct. DETAILED DESCRIPTION

[0032] In order to make the purpose, technical solutions and advantages of the embodiments of the present application more clear, the technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are some embodiments of the present application, but not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0033] As Figs. 1-2The utility model provides a kind of flame-retardant heat and mass transfer core, flame-retardant heat and mass transfer core is formed by the alternation of multiple single-layer structures overlapping combination;

[0034] Single-layer structure includes frame 1, multiple partitioning bars 2 arranged inside frame 1, and flame-retardant heat exchange film 3 arranged on partitioning bar 2;Partitioning bars 2 in adjacent single-layer structures are distributed in 180° mirror image, and form multiple closed air ducts by mutual adhesion;Air duct includes exhaust air duct 41 and fresh air duct 42;Partitioning bar 2 includes inlet section 21 located at air duct inlet end, outlet section 23 located at air duct outlet end and middle section 22 located at middle part of air duct;Frame 1, inlet section 21 and outlet section 23 are integrally injection molded by flame-retardant material;Middle section 22 is detachably connected with inlet section 21 and outlet section 23.

[0035] Flame-retardant heat exchange film includes heat exchange film 31, flame-retardant layer 33 located on both sides of heat exchange film 31 and adhesive layer 32 for bonding heat exchange film 31 and flame-retardant layer 33.

[0036] The utility model improves the flame-retardant performance of heat and mass transfer core by compounding flame-retardant layer on both sides of heat exchange film while ensuring the moisture permeability of heat exchange film;Frame, inlet section and outlet section of partitioning bar near air inlet and outlet are integrally injection molded by flame-retardant material, which can further improve the flame-retardant performance of heat and mass transfer core;The flame-retardant heat and mass transfer core provided by the utility model has excellent moisture permeability and flame-retardant performance, which can meet the demand of civil residential buildings and large public buildings for flame-retardant performance.

[0037] The middle section of partitioning bar is separately formed and assembled with inlet section and outlet section of partitioning bar through detachable connection, which can overcome the problem that middle part of partitioning bar is prone to deformation during traditional air duct skeleton integrally injection molding, resulting in poor molding precision, high air leakage rate and poor air tightness of heat and mass transfer core after assembly, and low heat exchange efficiency.In addition, when the middle section of partitioning bar is damaged during use, only the corresponding middle section needs to be replaced, without the need for overall replacement, which can effectively prolong the service life of heat and mass transfer core and reduce use cost.

[0038] In some preferred embodiments, the flame-retardant material is fireproof ABS resin, for example, POLYLACD-1000 fireproof ABS resin.

[0039] In some preferred embodiments, middle section 22 is ABS resin. The use of ordinary ABS resin for middle section can reduce cost.

[0040] In some preferred embodiments, the middle section 22 is a straight line structure. The middle section of the partitioning rib of the utility model is a straight line structure with high forming precision and convenient assembly. The middle section of the partitioning rib and the inlet section and outlet section of the partitioning rib are connected through a detachable connection mode, which can effectively reduce the risk of deformation, reduce deformation, and effectively improve the problem that the middle part of the partitioning rib is prone to deformation during the traditional air duct skeleton integral injection molding process, affecting the air tightness of the heat and mass transfer core obtained after assembly, and leading to low heat exchange efficiency.

[0041] In some preferred embodiments, the middle section 22 is connected with the inlet section 21 and the outlet section 23 through a detachable buckle 24. The buckle connection mode is convenient to install and detach, firm in connection, and high in stability.

[0042] In some preferred embodiments, the thickness of the heat exchange film 31 is 20-50 pm (for example, it can be 20 pm, 25 pm, 30 pm, 35 pm, 40 pm, 45 pm, or 50 pm). The heat exchange film is a polymer film, and is preferably one of a PE film, a PP film, a PTFE film, and a PVDF film.

[0043] In some preferred embodiments, the thickness of the adhesive layer 32 is 10-50 pm (for example, it can be 10 pm, 15 pm, 20 pm, 25 pm, 30 pm, 35 pm, 40 pm, 45 pm, or 50 pm).

[0044] In some preferred embodiments, the adhesive layer 32 is one of a dot matrix structure, a stripe structure, and a full coating structure. The utility model can control the moisture permeability of the heat and mass transfer core by selecting an adhesive layer with different structures, thereby meeting different use requirements.

[0045] In some preferred embodiments, the thickness of the flame-retardant layer 33 is not greater than 0.3 mm.

[0046] In some preferred embodiments, the flame-retardant layer 33 is a fire-resistant felt, and is preferably one of an aluminum silicate felt, an aerogel felt, a ceramic fiber felt, and a polyester chemical fiber felt. The utility model can meet different flame-retardant requirements by selecting different flame-retardant materials.

[0047] In some preferred embodiments, the adhesive layer 32 is a glue layer, and is preferably a polyurethane reactive hot melt glue layer. The viscosity of the polyurethane reactive hot melt glue layer at 100℃ is 5000 cps, and the curing can be completed within 12 h at room temperature. The curing mode is moisture curing. The Shore hardness of the cured glue layer is 22D to 55AHB. The glue layer of the utility model not only has the function of adhesion, but also can improve the strength of the flame-retardant heat exchange film to a certain extent.

[0048] In some preferred embodiments, the water absorption rate of the fire-resistant felt is 7-10% (for example, it can be 7%, 7.5%, 8%, 8.5%, 9%, 9.5% or 10%); the fire-resistant layer of the utility model is selected from the fire-resistant felt with low water absorption rate, so that the heat and mass transfer core can improve the fire resistance while not affecting the moisture permeability.

[0049] In some preferred embodiments, the density of the fire-resistant felt is 200-220 kg / m 3 (for example, it can be 200 kg / m 3 , 205 kg / m 3 , 210 kg / m 3 , 215 kg / m 3 or 220 kg / m 3 );

[0050] In some preferred embodiments, the slenderness ratio of the fire-resistant felt is 80-120:1.

[0051] In some preferred embodiments, the frame 1 is provided with positioning columns 11 and positioning holes 12 for connecting and installing the single-layer structures.

[0052] In some preferred embodiments, the single-layer structure is a hexagonal structure.

[0053] The utility model improves the fire resistance of the heat and mass transfer core by compounding the fire-resistant layer on both sides of the heat exchange film and integrally injection molding the frame near the air inlet and outlet, the inlet section and the outlet section of the partition strip with the fire-resistant material, so that the heat and mass transfer core obtained by assembly has excellent moisture permeability and fire resistance. The middle section of the partition strip is separately formed and assembled with the inlet section and the outlet section of the partition strip through a detachable connection mode, which can overcome the deformation of the middle part of the partition strip in the traditional integral injection molding process of the air duct framework, resulting in poor forming precision, high air leakage rate of the heat and mass transfer core obtained after assembly, poor air tightness and low heat exchange efficiency. In the use process, the middle section of the partition strip is more prone to damage, and when it is damaged, only the corresponding middle section needs to be replaced, without the need for overall replacement, which can effectively prolong the service life of the heat and mass transfer core and reduce the use cost.

[0054] It should be noted that, in this article, relational terms such as "first" and "second" are used merely to distinguish one entity or action from another entity or action, without necessarily requiring or implying any such actual relationship or order between such entities or actions. Moreover, the terms "comprises", "comprising", or any other variations thereof, are intended to cover non-exclusive inclusions, so that a process, method, article, or apparatus that comprises a list of elements does not only include those elements, but can also include other elements not expressly listed, or other elements inherent to such process, method, article, or apparatus. Without more limitations, an element defined by the statement "comprises a..." does not exclude the presence of additional identical elements in the process, method, article, or apparatus that includes the element.

[0055] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, and are not limited thereto; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that the technical solutions recorded in the foregoing embodiments can still be modified, or some technical features can be replaced by equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A flame-retardant heat and mass transfer core, characterized in that, The flame-retardant heat and mass transfer core is composed of multiple single-layer structures that are alternately overlapped and combined. The single-layer structure includes a frame, multiple partition ribs disposed inside the frame, and a flame-retardant heat exchange membrane disposed on the partition ribs; the partition ribs in adjacent single-layer structures are distributed in a 180° mirror image and are fitted together to form multiple closed air ducts; the air ducts include exhaust ducts and fresh air ducts; the partition ribs include an inlet section located at the inlet end of the air duct, an outlet section located at the outlet end of the air duct, and a middle section located in the middle of the air duct; the frame, the inlet section, and the outlet section are integrally injection molded from flame-retardant material; the middle section is detachably connected to the inlet section and the outlet section; The flame-retardant heat exchange membrane includes a heat exchange membrane, flame-retardant layers located on both sides of the heat exchange membrane, and an adhesive layer for bonding the heat exchange membrane and the flame-retardant layers.

2. The flame-retardant heat and mass transfer core according to claim 1, characterized in that, The middle section has a straight-line structure; and / or, The intermediate section is connected to the inlet section and the outlet section by a detachable snap fastener.

3. The flame-retardant heat and mass transfer core according to claim 1, characterized in that, The thickness of the heat exchange membrane is 20–50 μm.

4. The flame-retardant heat and mass transfer core according to claim 1, characterized in that, The thickness of the adhesive layer is 10–50 μm.

5. The flame-retardant heat and mass transfer core according to claim 4, characterized in that, The adhesive layer is one of the following: dot matrix structure, stripe structure, or full coating structure.

6. The flame-retardant heat and mass transfer core according to claim 1, characterized in that, The thickness of the flame-retardant layer is no more than 0.3 mm.

7. The flame-retardant heat and mass transfer core according to claim 1, characterized in that, The adhesive layer is a glue layer; and / or, The flame-retardant layer is a fire-resistant felt.

8. The flame-retardant heat and mass transfer core according to claim 7, characterized in that, The density of the fire-resistant felt is 200-220 kg / m³. 3 ; and / or, The refractory felt has a slenderness ratio of 80 to 120:

1.

9. The flame-retardant heat and mass transfer core according to claim 1, characterized in that, The frame is provided with positioning posts and positioning holes for connecting the various single-layer structures.

10. The flame-retardant heat and mass transfer core according to claim 1, characterized in that, The single-layer structure is a hexagonal structure.

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