CN220038790U - Flat plate type heat collecting device - Google Patents

Abstract

The utility model discloses a flat plate type heat collecting device, which comprises: the heat-insulating shell comprises a bottom plate and a frame, wherein the frame comprises a supporting piece and a connecting piece, the supporting piece and the connecting piece are integrally of a strip structure, the connecting piece is arranged on the supporting piece, and the supporting piece is arranged on the bottom plate; a transparent plate; a heat absorbing plate core; the heat-insulating plate comprises a transparent plate, a heat-absorbing plate core and a supporting piece, wherein the connecting piece is arranged on the transparent plate, an installation cavity is formed between the heat-insulating shell and the transparent plate, and the heat-absorbing plate core and the supporting piece are arranged in the installation cavity. The method reduces the influence of assembly errors to improve the tightness and the use reliability of the flat plate type heat collecting device.

Description

Flat plate type heat collecting device

Technical Field

The utility model belongs to the technical field of household appliances, and particularly relates to a flat plate type heat collecting device.

Background

At present, water heaters are household appliances commonly used in daily life of people, and are classified into electric water heaters, gas water heaters, solar water heaters and the like. The solar water heater utilizes solar energy to heat water, meets the requirements of environmental protection, and is widely popularized and used. In order to heat water by using solar energy, a solar water heater is generally provided with a flat plate type heat collecting device, and the flat plate type heat collecting device finally heats water in the solar water heater by using solar energy.

For a conventional flat plate heat collector, it generally includes a heat retaining housing, a heat absorbing plate core, and a transparent cover plate. For example, chinese patent publication No. CN 108458492A discloses a flat-plate solar collector, which includes a housing, a heat absorber, and a transparent cover plate. Wherein, the casing comprises bottom plate and frame, and the frame generally adopts the section bar structure for bottom plate and transparent plate are installed in the frame.

During assembly, the frame and the bottom plate are assembled to form the shell, then the heat absorber is placed in the shell, and finally the transparent cover plate is connected with the frame. However, during the assembly process, the frame is likely to be skewed due to the assembly accuracy, and an error gap formed between the transparent cover plate and the frame increases, thereby affecting the sealability. In view of this, it is an object of the present utility model to design a flat plate heat collector with reduced assembly error and improved sealability.

Disclosure of Invention

The utility model provides a flat plate type heat collecting device, which can reduce the influence of assembly errors so as to improve the tightness and the use reliability of the flat plate type heat collecting device.

In order to achieve the technical purpose, the utility model is realized by adopting the following technical scheme:

in one aspect, the present utility model provides a flat plate heat collecting device comprising:

the heat-insulating shell comprises a bottom plate and a frame, wherein the frame comprises a supporting piece and a connecting piece, the supporting piece and the connecting piece are integrally of a strip structure, the connecting piece is arranged on the supporting piece, and the supporting piece is arranged on the bottom plate;

a transparent plate;

a heat absorbing plate core;

the heat-insulating plate comprises a transparent plate, a heat-absorbing plate core and a supporting piece, wherein the connecting piece is arranged on the transparent plate, an installation cavity is formed between the heat-insulating shell and the transparent plate, and the heat-absorbing plate core and the supporting piece are arranged in the installation cavity.

In an embodiment of the present utility model, a flange structure is formed at an upper edge of the connecting piece, and the flange structure is fixedly connected with an edge of the transparent plate.

In an embodiment of the utility model, the flanging structure is formed with a first welding connection portion, the edge of the transparent plate is provided with a second welding connection portion, and the first welding connection portion and the second welding connection portion are connected together to form a welding portion.

In an embodiment of the present utility model, a sealant layer is further disposed between the edge of the transparent plate and the flange structure, and the sealant layer is disposed around the welding portion.

In an embodiment of the utility model, the second welding connection portion is a metal layer formed at an edge of the transparent plate.

In an embodiment of the utility model, the second welding connection portion is a metal insert embedded in the transparent plate, and a portion of the metal insert exposed out of the transparent plate forms the second welding connection portion.

In one embodiment of the utility model, the top of the supporting piece is further provided with a bent lap joint edge, and the lower edge of the connecting piece is welded on the lap joint edge;

the heat absorption plate core comprises a heat absorption plate and a heat exchange tube group, the heat exchange tube group is arranged on the heat absorption plate, and the edge of the heat absorption plate is lapped on the lap joint edge.

In an embodiment of the utility model, the edge of the bottom plate is provided with an upwardly bent welding edge, and the supporting piece is positioned at the inner side of the welding edge and welded with the welding edge.

In an embodiment of the utility model, the heat-insulating shell further comprises a protection frame, the protection frame is wrapped on the periphery of the frame, and a heat-insulating layer is arranged between the protection frame and the frame.

In an embodiment of the utility model, a first bending shielding edge is arranged at the upper part of the protection frame, and a second bending shielding edge is arranged at the lower part of the protection frame; the first shielding edge covers the outer part of the edge of the transparent plate, and the second shielding edge covers the outer part of the edge of the bottom plate.

Through adopting split type design with the frame, the frame is formed by support piece and connecting piece concatenation, when actually assembling, support piece can be connected with the bottom plate earlier, and the connecting piece then can be connected with the transparent plate earlier, then, be connected the realization through with connecting piece and support piece and assemble the transparent plate to heat preservation shell on, because the frame divide into support piece and connecting piece, and then realize support piece and connecting piece independent respectively assemble, in order to realize fixing transparent plate and connecting piece accurate equipment together in advance, then, when assembling support piece and connecting piece, can have great fault-tolerant rate with the influence of solving assembly error with the help of between support piece and the connecting piece, ensure to have higher assembly precision between transparent plate and the connecting piece, in order to improve flat heat collector's leakproofness.

Drawings

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

FIG. 1 is a schematic view of a vacuum flat panel collector according to an embodiment of the present utility model;

FIG. 2 is a second schematic structural view of an embodiment of the vacuum flat panel collector of the present utility model;

FIG. 3 is a cross-sectional view taken along line A-A of FIG. 2;

FIG. 4 is a partially enlarged schematic illustration of region B of FIG. 3;

FIG. 5 is a schematic view of a partial structure of the vacuum flat panel collector of FIG. 1 with the transparent plate removed;

FIG. 6 is a schematic view of a part of the vacuum flat panel collector of FIG. 5 with the heat absorbing plate removed;

FIG. 7 is an enlarged partial schematic view of region C of FIG. 6;

FIG. 8 is a schematic view of the heat exchange tube assembly of FIG. 1;

FIG. 9 is a schematic view of another embodiment of a vacuum flat panel collector according to the present utility model;

FIG. 10 is a partially enlarged schematic illustration of region D of FIG. 9;

FIG. 11 is a schematic view showing a partial structure of the vacuum flat panel collector according to the present utility model with a transparent plate removed;

fig. 12 is a schematic view of the inhalation detection assembly of fig. 11.

Reference numerals illustrate:

a housing 1;

a first welding connection part 10, a frame 11, a bottom plate 12 and a protection frame 13;

an elastic deformation part 100, a flanging structure 110, a supporting piece 111, a connecting piece 112 and a welding edge 121;

a bridging edge 1111;

a transparent plate 2;

a second welded connection 20 and a sealant layer 21;

a heat absorbing plate core 3;

a through hole 30, a heat absorbing plate 31, and a heat exchange tube group 32;

liquid inlet pipe 321, liquid outlet pipe 322, heat exchange branch pipe 323 and connecting pipe 324;

a support 4;

support protrusions 41, support plates 42, connecting plates 43, and avoidance notches 44;

a detection assembly 5;

a mounting bracket 51, an evaporable getter 52, and a non-evaporable getter 53;

mounting insertion holes 511 and connecting rods 512.

Description of the embodiments

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments of the present utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

It should be noted that, in the description of the present utility model, terms such as "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate directions or positional relationships based on the directions or positional relationships shown in the drawings, which are merely for convenience of description, and do not indicate or imply that the apparatus or elements must have a specific orientation, be constructed and operated in a specific orientation, and thus are not to be construed as limiting the present utility model. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the present utility model, unless specifically stated and limited otherwise, the terms "mounted," "connected," and the like are to be construed broadly and include, for example, either fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

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

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

First embodiment as shown in fig. 1 to 4, in one embodiment of the present utility model, there is provided a vacuum flat panel collector comprising:

the shell 1, the periphery of the shell 1 is provided with a frame 11, and a first welding connection part 10 is formed on the frame 11;

a transparent plate 2, the edge of the transparent plate 2 being provided with a second welded connection 20;

a heat absorbing plate core 3;

wherein, transparent plate 2 covers on frame 11, and first welded connection portion 10 and second welded connection portion 20 weld together and form the welded part, form the installation cavity between shell 1 and the transparent plate 2, and heat absorption board core 3 sets up in the installation cavity.

In particular, for the transparent plate 2, it is necessary to satisfy the requirements of sunlight projection on the one hand, and on the other hand, to form a mounting cavity in cooperation with the housing 1 to mount the absorber plate core 3. For the vacuum flat plate collector needing to be vacuumized, the installation cavity needs to be vacuumized so as to play a role in slowing down heat dissipation. For this reason, how to ensure the sealing reliability of the connection portion of the transparent plate 2 and the housing 1 is a key factor in determining the service life of the vacuum flat panel collector.

The transparent plate 2 used in the vacuum flat panel collector provided in this embodiment has an integral second welded connection 20 formed at the edge thereof, that is, the second welded connection 20 and the transparent plate 2 are connected as an integral part with the frame 11 of the housing 1.

Correspondingly, a first welding connection portion 10 for welding is also formed on the frame 11, and the first welding connection portion 10 and the second welding connection portion 20 can be connected together in a welding manner. Like this, through first welded connection portion 10 and the welded connection portion 20 welded cooperation for transparent plate 2 firm reliable fixed mounting is on shell 1, and more importantly, the connection region that first welded connection portion 10 and the welded connection portion 20 of second formed has better seal reliability, and sealed connection's effect is better.

In the later use process, as the first welding connection part 10 and the second welding connection part 20 are connected in a welding mode, the problem of aging and cracking caused by adopting sealant connection is avoided, and the higher vacuum degree in the installation cavity can be ensured to be maintained for a longer time, so that the service life of the vacuum flat plate collector is effectively prolonged.

Through being provided with second welded connection portion at the edge of transparent plate, corresponding, be provided with the first welded connection portion of matching on the frame of shell, when the equipment, then will make first welded connection portion and second welded connection portion weld together through welded mode to the transparent plate, and after first welded connection portion and second welded connection portion weld together, on the one hand can ensure that the transparent plate is firm reliable installs on the frame, on the other hand welded part has better leakproofness and stability, and then the life of effectual extension vacuum flat plate collector.

In some embodiments, in order to further protect the welded portion formed between the transparent plate 2 and the frame 11 from corrosion, a sealing process may be further performed by a sealant outside the welded portion.

As shown in fig. 10, a sealant layer 21 is further disposed between the edge of the transparent plate 2 and the frame 11, and the sealant layer 21 is disposed around the welded portion.

Specifically, the sealing treatment is performed by disposing the sealant layer on the outer periphery of the welding portion, on one hand, the connection portion formed between the transparent plate 2 and the frame 11 can be further sealed by the sealant layer 21, on the other hand, the sealant layer 21 surrounds the outside of the welding portion so as to isolate the welding portion from the outside, and further, corrosion of the welding portion caused by rainwater is reduced, and the use reliability is improved more advantageously.

In an embodiment of the present utility model, the second welding connection 20 has a ring structure.

Specifically, in order to ensure that the peripheral edges of the transparent plate 2 are all well welded and sealed, the second welded connection 20 is distributed on the edge of the transparent plate 2 in a ring-shaped continuity.

In this way, during the assembly process, the second welding connection portion 20 can be welded with the first welding connection portion 10 of the frame 11 to form a welding area of a closed loop, so as to ensure that the peripheral ring has no leakage point.

In another embodiment, there may be various ways of expressing the second welded connection 20.

For example: the second solder connection 20 is a metal layer formed at the edge of the transparent plate 2.

Specifically, the metal component is fused on the surface of the transparent plate to form a metal layer, and regarding the manner of forming the metal layer on the transparent plate, the metal layer structure may be set on the surface of the glass substrate in the conventional technology, which is not limited and described herein in detail.

Likewise, the second welding connection portion 20 may be formed on the transparent plate 2 in an embedded manner to form a metal insert, and a portion of the metal insert exposed outside the transparent plate 2 may form the second welding connection portion 20.

Specifically, the transparent plate 2 is usually made of glass, and when the glass plate is manufactured, a metal insert can be placed in a mold in advance, so that part of the structure of the metal insert is embedded in the glass plate while the glass plate is manufactured in the mold.

The vacuum flat panel collector provided by the embodiment of the present utility model is not limited to a specific manner of forming the second welding connection portion 20 at the edge of the transparent plate 2.

In another embodiment of the present utility model, the housing 1 includes a bottom plate 12 and a frame 11, the frame 11 extends along an edge of the bottom plate 12 and is disposed on the bottom plate 12, a flanging structure 110 is disposed on an upper portion of the frame 11, and the flanging structure 110 forms a first welding connection portion.

Specifically, in order to ensure the overall structural strength of the vacuum flat panel collector, the bottom plate 12 and the frame 11 are generally made of metal materials, so that the flange structure 110 formed by folding the frame 11 on itself constitutes the first welding connection portion 10.

In addition, when the sealant is applied, the sealant is applied to the transparent plate 2 and the burring structure 110 so that the sealant layer 21 is provided between the edge of the transparent plate 2 and the burring structure 110.

In the second embodiment, in order to satisfy the requirement of the frame 11 that the transparent plate 2 expands with heat and contracts with cold due to the external environment temperature during outdoor use, as shown in fig. 9-10, the frame 11 is provided with an elastic deformation portion 100, and the elastic deformation portion 100 extends along the length direction of the frame 11.

Specifically, the elastic deformation portion 100 formed on the frame 11 can meet the requirement that the frame 11 generates corresponding deformation in the direction perpendicular to the length, so that after the transparent plate 2 deforms due to thermal expansion and contraction caused by temperature difference, the transparent plate 2 applies inward or outward force to the frame 11 due to deformation, and after the frame 11 is stressed, the elastic deformation portion 100 deforms to match with expansion or retraction of the transparent plate 2, so that the force generated between the transparent plate 2 and the frame 11 is reduced.

In one embodiment, the cross section of the frame 11 perpendicular to the length direction is an arc structure or a bending structure.

Specifically, the longitudinal section of the frame 11 is in an arc structure or a bending structure, so that the frame 11 has a buffering capacity of deforming inwards and outwards.

In the use, when the transparent plate 2 is expanded with heat and contracted with cold because of the change of the ambient temperature, the frame 11 can be deformed inwards or outwards to offset the stress generated by the deformation of the transparent plate 2, so as to ensure that the transparent plate 2 can be reliably used for a long time.

Through being provided with elastic deformation portion with the frame of shell along length direction, the transparent plate passes through the frame and installs and with fixed connection between the frame, in the use, when the transparent plate appears the phenomenon of expend with heat and contract with cold because of the difference in temperature, the transparent plate exerts force to the frame, the frame receives the thrust or the pulling force of transparent plate to make the frame take place to warp at elastic deformation portion to reduce the force that transparent plate deformation formed between frame and transparent plate, like this, alright reduce transparent cover plate because of the difference in temperature deformation atress appear cracked, improved flat plate collector's reliability in use and prolonged life.

In the third embodiment, in order to reduce the assembly error, the mounting accuracy of the transparent plate 2 is affected to improve the sealing property as a whole. The frame 11 is of a split design.

As shown in fig. 3, the frame 11 includes a support 111 and a connecting member 112, the support 111 and the connecting member 112 are integrally formed in a strip structure, the lower edge of the connecting member 112 is welded on the support 111, and the support 111 is disposed on the base plate 12. In addition, the connection member 112 is provided on the transparent plate 2.

In particular, the frame 11 is designed to be split and includes the supporting member 111 and the connecting member 112, so that the transparent plate 2 can be precisely assembled with the connecting member 112 when the transparent plate 2 is actually assembled. Since the connection members 112 are fixed to the transparent plate 2 therebetween, the fitting accuracy between the connection members 112 and the transparent plate 2 can be ensured, and the connection sealability therebetween can be provided; meanwhile, the supporting member 111 is fixedly installed on the base plate 12, and after the absorber plate core 3 is assembled on the base plate 12, the supporting member 111 and the connecting member 112 are connected.

Especially, in the first embodiment, when the connecting piece 112 is connected with the transparent plate 2 by adopting a welding manner, while the assembly precision is satisfied, it can be ensured that only the connecting piece 112 and the transparent plate 2 are positioned in the high-temperature environment of the atmosphere furnace when the connecting piece 112 and the transparent plate 2 are heated and welded by the atmosphere furnace, so that the high-temperature influence on other components is reduced, and the welding quality of the connecting piece 112 and the transparent plate 2 is improved.

In one embodiment, the upper edge of the connecting member 112 forms the burring structure 110 to form the first welding connection 10 by forming the burring structure 110.

In another embodiment, the cross section of the connecting member 112 is a C-shaped structure or a laterally inverted U-shaped structure. The connecting piece 112 has a C-shaped structure or a laterally inverted U-shaped structure, and can form an elastic deformation part to meet the deformation requirement of the transparent plate 2 for thermal expansion and contraction.

In another embodiment of the present utility model, in order to facilitate the installation and fixation of the absorber plate core 3, the top of the supporting member 111 is further provided with a bent joint edge 1111, and the lower edge of the connecting member 112 is welded to the joint edge 1111;

the absorber plate core 3 includes an absorber plate 31 and a heat exchange tube group 32, the heat exchange tube group 32 is provided on the absorber plate 31, and the edge of the absorber plate 31 is overlapped on the overlap edge 1111.

Specifically, for the heat absorbing plate core 3, the heat absorbing plate 31 is lapped on the lapping edge 1111 so as to be integrally overhead above the bottom plate 12, thus, the necessary connection area between the heat absorbing plate core 3 and the housing 1 due to the installation requirement can be reduced, and the heat exchange amount between the heat absorbing plate core 3 and the housing 1 is more beneficial to be reduced.

In addition, the bridging edges 1111 can effectively support the heat absorbing plate 31 from the periphery, so that the heat absorbing plate core 3 is completely separated from the bottom plate 12, and the reliable installation is satisfied, and meanwhile, the heat conduction between the two is reduced to the greatest extent.

In some embodiments, the heat exchange tube group 32 includes a liquid inlet tube 321, a liquid outlet tube 322, and a plurality of heat exchange branch tubes 323, where the plurality of heat exchange branch tubes 323 are arranged side by side and communicate with the liquid inlet tube 321 and the liquid outlet tube 322, and the heat exchange branch tubes 323 are abutted against the heat absorbing plate 31.

Specifically, the liquid inlet pipe 321 is used for guiding the medium to be heated to the inside of the casing 1 for heating, and the liquid outlet pipe 322 is used for outputting the heated medium to the outside of the casing 1. The heat exchanging branch pipe 323 is abutted against the heat absorbing plate 31, and the heat absorbing plate 31 absorbs heat of solar irradiation to heat the medium flowing through the heat exchanging branch pipe 323.

In one embodiment, the liquid inlet pipe 321 and the liquid outlet pipe 322 are arranged oppositely, and the plurality of heat exchange branch pipes 323 are positioned between the liquid inlet pipe 321 and the liquid outlet pipe 322;

in another embodiment, as shown in fig. 8, the heat exchange tube set 32 further includes a connection tube 324, where the liquid inlet tube 321 and the liquid outlet tube 322 are located on the same side of the housing 1, and the connection tube 324 is located on a side of the housing 1 away from the liquid inlet tube 321 and the liquid outlet tube 322; the heat exchange branch pipes 323 are all communicated with the connecting pipe 324, part of the heat exchange branch pipes 323 are arranged between the liquid inlet pipe 321 and the connecting pipe 324, and the rest of the heat exchange branch pipes 323 are arranged between the liquid outlet pipe 322 and the connecting pipe 324.

In one embodiment of the present utility model, the edge of the bottom plate 12 is provided with an upwardly bent welding edge 121, and the supporting member 111 is located inside the welding edge 121 and welded to the welding edge 121.

Specifically, when the support 111 is welded to the base plate 12, the support 111 is overlapped on the inner side of the welding edge 121, and then, the support 111 and the welding edge 121 are welded together. Li Yonghan bead 121 can be positioned to support 111 to improve the quality of the weld.

In some embodiments of the present utility model, the housing 1 further includes a protection frame 13, the protection frame 13 is wrapped around the periphery of the frame 11, and an insulation layer (not shown) is disposed between the protection frame 13 and the frame 11.

Specifically, through wrap up in the outside of frame 11 the protective housing, on the one hand through the protective housing can protect frame 11, and on the other hand the heat preservation that forms between the two can effectually play thermal-insulated heat retaining effect.

In one embodiment, a first bending shielding edge (not marked) is arranged at the upper part of the protection frame 13, and a second bending shielding edge (not marked) is arranged at the lower part of the protection frame 13; the first shielding edge covers the outside of the edge of the transparent plate 2 and the second shielding edge covers the outside of the edge of the bottom plate 12.

Through adopting split type design with the frame, the frame is formed by support piece and connecting piece concatenation, when actually assembling, support piece can be connected with the bottom plate earlier, and the connecting piece then can be connected with the transparent plate earlier, then, be connected the realization through with connecting piece and support piece and assemble the transparent plate to the shell, because the frame divide into support piece and connecting piece, and then realize support piece and connecting piece respectively independent equipment, in order to realize fixing transparent plate and connecting piece accurate equipment together in advance, then, when assembling support piece and connecting piece, can have great fault-tolerant rate with the influence of solving assembly error with the help of between support piece and the connecting piece, ensure to have higher assembly precision between transparent plate and the connecting piece, in order to improve flat collector's leakproofness.

In the fourth embodiment, as shown in fig. 5 to 8, for the transparent plate 2, the entire area of the transparent plate 2 is also larger because of the need to satisfy the requirement of large-area solar irradiation, and in order to effectively support the transparent plate 2 with a larger area to prevent collapse, the flat plate type heat collector in this embodiment is configured with the supporting member 4, the supporting member 4 is provided with a plurality of supporting protrusions 41 arranged in an array, the supporting member 4 is disposed in the housing 1, and the supporting protrusions 41 pass through the through holes 30 and extend toward the transparent plate 2.

Specifically, the transparent plate 2 is uniformly and effectively supported by the plurality of supporting protrusions 41 arranged in an array, so that the transparent plate 2 can be effectively prevented from collapsing at the middle part due to self gravity or other external factors when in use.

Wherein the heat absorbing plate core 3 is provided with a through hole 30, and the supporting protrusion 41 passes through the through hole 30 and abuts against the inner surface of the transparent plate 2.

In assembly, the support 4 is mounted on the bottom plate 12 of the housing 1, and then the absorber plate core 3 is placed over the support 4, and the support protrusions 41 are penetrated through the through holes 30 to support the upper transparent plate 2.

In some embodiments, at least part of the support protrusions 41 may rest against the inner surface of the transparent plate 2 after the flat plate collector is assembled; alternatively, the free end of the supporting protrusion 41 is close to the inner surface of the transparent plate 2, leaving a certain gap between the free end of the supporting protrusion 41 and the transparent plate 2.

In another embodiment, the support 4 includes a plurality of support plates 42 and a plurality of connection plates 43, wherein a plurality of support protrusions 41 are provided on the support plates 42, the plurality of support plates 42 are arranged side by side at intervals, and the plurality of support plates 42 are connected together by the connection plates 43.

Specifically, the supporting member 4 is inserted through the supporting plate 42 and the connecting plate 43 to form a grid structure, for example, a clamping groove is formed in the connecting plate 43, and the supporting plate 42 is clamped in the clamping groove.

The support 4 is maintained in a stable state in the housing 1 by the support plate 42 being cross-fitted with the connection plate 43. The connection plate 43 may be better supported by a plurality of support plates 42 to ensure that the support protrusions 41 can effectively support the transparent plate 2.

In one embodiment, in order to reduce the generation of heat bridges to reduce the heat transfer between the support member 4 and the heat exchange tube group 32, a plurality of avoiding notches 44 are provided on the support member 4, and the heat exchange branch tubes 323 are suspended in the avoiding notches 44.

Specifically, since the plurality of heat exchange branch pipes 323 are arranged side by side above the support member 4 in the housing 1, the avoidance notches 44 are formed in the support member 4 at positions opposite to the heat exchange branch pipes 323, so that the heat exchange branch pipes 323 are not contacted with the support member 4, and a thermal bridge is prevented from being formed between the heat exchange branch pipes 323 and the support member 4 for heat transfer.

According to the directions of the support plate 42 and the connection plate 43, the avoidance gap 44 is formed on the plate body perpendicular to the heat exchange branch pipe 323, and in fig. 7, the avoidance gap 44 is formed on the support plate 42. The position of the escape indentation 44 on the support 4 is not limited here.

In addition, for the through hole 30 provided on the heat absorbing plate 31, the supporting protrusion 41 is in a suspended state in the through hole 30, so as to reduce the contact between the supporting protrusion 41 and the edge of the through hole 30, which results in a large amount of heat transfer exchange between the supporting member 4 and the heat absorbing plate 31.

Through setting up support piece in the shell, utilize the supporting projection of the array distribution of configuration on the support piece to carry out comprehensive effectual support to the transparent plate in the lower part of transparent plate, like this, in the use, the bottom of large tracts of land transparent plate evenly provides holding power through a plurality of supporting projections, and then alleviates the transparent plate and because of gravity or other external causes the collapse that the mid portion appears by a wide margin to reduce appear the transparent plate and take place to break, and then improved flat plate collector's reliability in use.

In order to facilitate the user or operator to understand the state of the vacuum flat panel collector, the vacuum flat panel collector may further include a detection assembly 5, including a mounting bracket 51, an evaporable getter 52 and a non-evaporable getter 53, wherein the mounting bracket is provided with a first mounting groove (not labeled) and a second mounting groove (not labeled), the evaporable getter is located in the first mounting groove, and the non-evaporable getter is located in the second mounting groove.

Wherein the mounting bracket is disposed between the transparent plate and the absorber plate core.

Specifically, during assembly, the detection assembly 5 is placed in the housing through the mounting bracket such that the mounting bracket is positioned between the transparent plate and the absorber plate core, such that the evaporable getter 52 and the non-evaporable getter 53 in the mounting recess are externally visible through the transparent plate.

During initial use, the interior of the housing is subjected to a vacuum process such that the interior is in a higher vacuum state, and both the evaporable getter 52 and the non-evaporable getter 53 are in an activated state and are not consumed. With the increase of the service time, leakage points gradually occur due to component aging and the like, and after the external air enters the housing, the evapotranspiration type getter 53 is used as a main getter component to absorb the entered air so as to continuously maintain the high vacuum degree inside the housing. At the same time, the evaporable getter 52 is involved in absorbing gas, and the evaporable getter 52 gradually evaporates and loses with the increase of the absorbing gas, so that the user or operator can infer the vacuum condition of the housing according to the consumption of the evaporable getter 53.

The non-evaporable getter is used as a main getter material, so that the inside of the shell can be effectively gettered, the vacuum degree inside the shell can be maintained for a long time, and in the using process, the evaporable getter can also getter the gas in the shell, and the volume of the evaporable getter can be changed after the evaporable getter is gettered, so that a user can infer the vacuum degree condition in the shell according to the volume change of the evaporable getter, and the state of the vacuum flat plate collector can be conveniently and timely known.

In some embodiments, the mounting bracket may be provided on the support member for ease of installation in the housing to ensure a secure and reliable installation of the sensing assembly.

Specifically, the mounting bracket is provided with a mounting jack 511, and the mounting jack is sleeved on the corresponding supporting protrusion.

In the assembly process, the mounting bracket can be positioned and mounted through the corresponding supporting protrusions, and the supporting protrusions are inserted into the mounting insertion holes so as to limit the position of the mounting bracket.

And, the supporting protrusion passes through the heat absorbing plate and the top thereof abuts on the transparent plate such that the mounting bracket is restrained between the transparent plate and the heat absorbing plate.

In some embodiments, the two sides of the mounting bracket are respectively provided with a connecting rod 512, and the free end of the connecting rod is provided with the mounting jack.

Specifically, the mounting bracket is connected between the two supporting protrusions through two connecting rods, so that the mounting bracket is firmly and reliably mounted and fixed.

The sixth embodiment of the present utility model further provides a method for assembling the vacuum flat panel collector, including: the transparent plate and the frame are connected together in a welding mode, the heat absorbing plate core is preassembled on the bottom plate, and then the frame and the bottom plate are welded together.

Specifically, the transparent plate and the frame are coated with solder and are connected together in a welding mode in an atmosphere furnace at high temperature, and then the transparent plate and the frame are coated with silica gel. And then preassembling the heat absorption plate core and the supporting piece on the bottom plate, welding the frame and the bottom plate together, welding the liquid inlet pipe and the liquid outlet pipe with the bottom plate together to assemble the shell, and vacuumizing to complete the assembly. Thus, the defect that the parts such as the heat absorption plate core and the like cannot resist the welding temperature can be avoided, and the performance of the absorption coating is ensured.

In the description of the present specification, reference to the terms "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The above embodiments are only for illustrating the technical solution of the present utility model, and are not limiting; although the utility model has been described in detail with reference to the foregoing embodiments, it will be apparent to one skilled in the art that modifications may be made to the technical solutions described in the foregoing embodiments, or equivalents may be substituted for some of the technical features thereof; such modifications and substitutions do not depart from the spirit and scope of the corresponding technical solutions.

Claims (10)

1. A flat plate heat collecting device, comprising:

the heat-insulating shell comprises a bottom plate and a frame, wherein the frame comprises a supporting piece and a connecting piece, the supporting piece and the connecting piece are integrally of a strip structure, the connecting piece is arranged on the supporting piece, and the supporting piece is arranged on the bottom plate;

a transparent plate;

a heat absorbing plate core;

the heat-insulating plate comprises a transparent plate, a heat-absorbing plate core and a supporting piece, wherein the connecting piece is arranged on the transparent plate, an installation cavity is formed between the heat-insulating shell and the transparent plate, and the heat-absorbing plate core and the supporting piece are arranged in the installation cavity.

2. The flat plate heat collecting device according to claim 1, wherein the upper edge of the connecting member forms a burring structure, and the burring structure is fixedly connected with the edge of the transparent plate.

3. The flat plate heat collecting device according to claim 2, wherein the burring structure is formed with a first welding connection portion, the edge of the transparent plate is provided with a second welding connection portion, and the first welding connection portion and the second welding connection portion are connected together to form a welding portion.

4. A flat plate heat collector according to claim 3, wherein a sealant layer is further provided between the edge of the transparent plate and the flange structure, the sealant layer being disposed around the welded portion.

5. A flat plate heat collecting device according to claim 3, wherein the second welding connection portion is a metal layer formed at an edge of the transparent plate.

6. A flat plate heat collecting device according to claim 3, wherein the second welding connection portion is a metal insert embedded in the transparent plate, and a portion of the metal insert exposed outside the transparent plate forms the second welding connection portion.

7. The flat plate heat collecting device according to claim 1, wherein the top of the supporting member is further provided with a bent overlap edge, and the lower edge of the connecting member is welded to the overlap edge;

the heat absorption plate core comprises a heat absorption plate and a heat exchange tube group, the heat exchange tube group is arranged on the heat absorption plate, and the edge of the heat absorption plate is lapped on the lap joint edge.

8. A flat plate heat collecting device according to claim 3, wherein the edge of the bottom plate is provided with a welding edge bent upward, and the support member is located inside the welding edge and welded with the welding edge.

9. The flat plate heat collector of claim 1 wherein the heat insulating housing further comprises a protective frame, the protective frame is wrapped around the periphery of the frame, and a heat insulating layer is disposed between the protective frame and the frame.

10. The flat plate heat collector according to claim 9, wherein the upper portion of the protective frame is provided with a first bent shielding edge, and the lower portion of the protective frame is provided with a second bent shielding edge; the first shielding edge covers the outer part of the edge of the transparent plate, and the second shielding edge covers the outer part of the edge of the bottom plate.