CN215571200U - Foaming cushion layer and water heater - Google Patents

Abstract

The utility model relates to the technical field of water heaters, in particular to a foaming cushion layer and a water heater. This foaming bed course is used for supporting the inner bag of water heater, the foaming bed course is made by polyurethane rigid foaming material, the foaming bed course have with the butt face of the shape looks adaptation of inner bag, the butt face with the inner bag butt, just the wall thickness of foaming bed course is even. This foaming bed course adopts polyurethane hard expanded material to make, and the texture is hard, supports the inner bag and can not produce deformation, compares and adopts soft expanded plastics can reduce the size and the thickness of foaming bed course, can reduce the cost on the one hand, and on the other hand can be on the unchangeable basis of shell and inner bag size, reserves sufficient space for the foaming of heat preservation, avoids expanded material to flow obstructed to improve the homogeneity of heat preservation, promote the thermal insulation performance of water heater.

Description

Foaming cushion layer and water heater

Technical Field

The utility model relates to the technical field of water heaters, in particular to a foaming cushion layer and a water heater.

Background

The water heater comprises an inner container, a shell and a foaming heat-insulating layer arranged between the inner container and the shell. In the production process, in order to avoid the process quality problems of improper assembly of the water heater, overflow of the foaming material and the like caused by deflection of the inner container in the shell due to uneven expansion of the foaming material, a foaming cushion layer is further arranged in the shell to support and position the inner container.

The existing foaming cushion layer is generally made of polystyrene, and the polystyrene has certain strength and heat preservation performance and can play a role in buffering and supporting the liner. However, because polystyrene is soft foamed plastic and is easy to deform under external pressure, in order to improve the supporting effect of the polystyrene on the liner, the foamed cushion layer has larger size, the wall thickness is generally not less than 20mm, and the cost is high; in addition, because of the size and the thickness of the foaming cushion layer are large, in the process of foaming and forming the heat-insulating layer, the reserved foaming space in the shell is small, the flowing of foaming materials is blocked, so that the quantity of local materials is easily caused, and the problems of the inclined top of the liner or the dragging of the end cover and the like are further caused.

SUMMERY OF THE UTILITY MODEL

One object of the present invention is to provide a foam cushion layer, which is advantageous for reducing the cost and promoting the flow and filling of the foam material during the forming process of the insulation layer.

In order to achieve the purpose, the utility model adopts the following technical scheme:

the utility model provides a foaming bed course for support the inner bag of water heater, the foaming bed course is made by polyurethane rigid foam material, the foaming bed course have with the butt face of the shape looks adaptation of inner bag, the butt face with the inner bag butt, just the wall thickness of foaming bed course is even.

This foaming bed course adopts polyurethane hard expanded material to make, and the texture is hard, supports the inner bag and can not produce deformation, compares and adopts soft expanded plastics can reduce the size and the thickness of foaming bed course, can reduce the cost on the one hand, and on the other hand can be on the unchangeable basis of shell and inner bag size, reserves sufficient space for the foaming of heat preservation, avoids expanded material to flow obstructed to improve the homogeneity of heat preservation, promote the thermal insulation performance of water heater.

In a preferable embodiment of the present invention, the thickness of the foamed cushion layer is 8mm to 15 mm.

The volume and the thickness of foaming bed course all can reduce, and the space that the foaming bed course took in the shell is little, can provide sufficient foaming space for the foaming material of heat preservation, is favorable to expanded fully and the packing of foaming material, avoids the foaming material to flow obstructed, and then improves the thermal insulation performance of water heater.

As a preferable aspect of the present invention, the positioning structure is integrally formed with the end cap.

The utility model also aims to provide the water heater which is good in heat preservation performance.

In order to achieve the purpose, the utility model adopts the following technical scheme:

a water heater comprises a shell, an end cover and a liner arranged in the shell, wherein the end cover is connected with the shell, the water heater also comprises a foaming cushion layer, and the foaming cushion layer is arranged between the end cover and the liner.

The foamed cushion layer in the water heater has good supporting and positioning effects on the inner container, is not easy to deform, can improve the positioning effect on the inner container, and avoids the inner container from deviating; the thickness and the volume of the foaming cushion layer can be further reduced, the cost is reduced, and the flowing and the filling of the foaming material in the forming process of the heat-insulating layer are promoted.

In a preferred aspect of the present invention, a positioning structure is provided on a side of the end cap facing the foam cushion layer, the positioning structure having a positioning surface that is fitted to an outer contour surface of the foam cushion layer and abuts against the foam cushion layer.

The positioning structure can stably support the foaming cushion layer, and the inner container is prevented from moving due to the movement of the position of the foaming cushion layer, so that the problems of process quality such as improper assembly of the water heater, overflow of a foaming material and the like are avoided.

As a preferable aspect of the present invention, the positioning structure includes a plurality of support columns arranged at intervals in a circumferential direction of the inner container, and top surfaces of the plurality of support columns form the positioning surface.

Be the annular through a plurality of support columns and arrange, can reduce with the area of contact's of foaming bed course on the basis, guarantee the supporting effect to the foaming bed course through the increase to the support position of foaming bed course, reduce location structure and occupy the volume to for the foaming material provides sufficient space, make the heat preservation that the foaming material foaming formed can the cladding outside the foaming bed course, improve the heat preservation effect that is close to the one end of foaming bed course of inner bag.

As a preferable scheme of the present invention, the positioning structure includes three supporting columns that are uniformly and alternately arranged.

Compare four or more support columns among the prior art, because of the intensity of foaming bed course is good in this embodiment, can reduce the quantity of support column, be favorable to reducing the area of contact to the foaming bed course for more positions of foaming bed course can be by the heat preservation cladding, thereby improve the thermal insulation performance of water heater.

As a preferable scheme of the present invention, the positioning structure further includes a connecting portion, the connecting portion is disposed in a space surrounded by the plurality of supporting pillars and respectively connected to the plurality of supporting pillars, and the connecting portion and the foaming cushion layer are disposed at an interval along an axial direction of the inner container.

The connecting part is connected with the supporting columns, so that the strength of the positioning structure can be improved on the basis of reducing the contact area between the supporting columns and the foaming cushion layer, and the foaming cushion layer and the inner container can be better supported.

The connecting part is positioned below the foaming cushion layer and is spaced from the foaming cushion layer by a certain distance. When the heat preservation layer is formed, the foaming material can enter the space between the foaming cushion layer and the connecting part from the space between the two adjacent supporting columns, so that the heat transfer between the foaming cushion layer and the connecting part is reduced, and the heat preservation performance of the water heater is further improved.

As a preferable scheme of the present invention, a circumferential dimension of the top surface of each support column along the inner container gradually decreases along an axial direction close to the inner container.

Above-mentioned setting can further reduce the area that the foaming bed course is sheltered from by the location structure, corresponds the area of contact of increase foaming bed course and heat preservation, improves the thermal insulation performance.

In a preferred embodiment of the present invention, the cross-sectional area of the support column gradually increases in a direction away from the inner container.

The sectional area of support column increases along the direction that deviates from the inner bag gradually for the upper end sectional area of support column is little, and the area of sheltering from the foaming bed course is little, and the lower extreme sectional area of support column is big, and is connected more stably with the end cover, and support column intensity is good, so that satisfy the supporting effect to foaming bed course and inner bag.

The utility model has the beneficial effects that: the utility model provides a foaming cushion layer and a water heater. This foaming bed course adopts polyurethane hard expanded material to make, and the texture is hard, supports the inner bag and can not produce deformation, compares and adopts soft expanded plastics can reduce the size and the thickness of foaming bed course, can reduce the cost on the one hand, and on the other hand can be on the unchangeable basis of shell and inner bag size, reserves sufficient space for the foaming of heat preservation, avoids expanded material to flow obstructed to improve the homogeneity of heat preservation, promote the thermal insulation performance of water heater.

Drawings

FIG. 1 is a cross-sectional view of a portion of the structure of a water heater provided by the present invention;

FIG. 2 is a front view of the foam cushion provided by the present invention in cooperation with a positioning structure;

fig. 3 is a schematic structural view of the foamed cushion layer provided by the present invention when being matched with the positioning structure.

In the figure:

1. a housing; 2. an end cap; 3. a foamed cushion layer; 4. a positioning structure; 41. a support pillar; 42. a connecting portion.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the utility model and are not limiting of the utility model. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.

In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, removably connected, or integral to one another; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

In the description of the present embodiment, the terms "upper", "lower", "right", etc. are used in an orientation or positional relationship based on that shown in the drawings only for convenience of description and simplicity of operation, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used only for descriptive purposes and are not intended to have a special meaning.

The embodiment provides a water heater, which comprises a shell 1, an end cover 2 and an inner container, wherein one end of the shell 1 in the axial direction is opened, the inner end of the shell is installed in the shell 1 through the opening, and the end cover 2 is connected with the shell 1 to close the opening.

Alternatively, the end cap 2 may be formed by steel plate drawing or plastic injection moulding.

Optionally, the inner container may be treated with an enamel process to avoid rusting or corrosion of the inner container.

In order to improve the heat preservation performance of the water heater, the shell 1, the end cover 2 and the inner container jointly enclose a foaming space, foaming materials are filled in the foaming space, a heat preservation layer of the water heater can be formed, and the heat preservation layer can prevent heat in the inner container from being dissipated outwards, so that heat preservation is carried out on water in the inner container.

In order to avoid the inner bag to squint at foaming material inflation foaming in-process relative shell 1, the water heater still includes foaming bed course 3, foaming bed course 3 sets up between inner bag and end cover 2, the one end and the 2 butt of end cover or the connection of foaming bed course 3, the other end and inner bag butt, can play the effect of buffering and support to the inner bag, avoid the inner bag because of the inhomogeneous messenger inner bag of foaming material inflation takes place the skew in shell 1, and then lead to the water heater assembly not in place, technological quality problems such as foaming material is excessive.

Specifically, the inner container comprises a middle cylinder and end sockets arranged at two opposite ends of the middle cylinder, the end sockets are approximately hemispheroids, and the end sockets are connected with two ends of the middle cylinder and seal the middle cylinder.

For improving the supporting effect of the foaming cushion layer 3 to the inner container, in this embodiment, the foaming cushion layer 3 is disposed on the end cover 2 and sleeved outside the end socket to maintain the stability of the inner container in the housing 1.

Optionally, two heads of the inner container can be correspondingly provided with a foaming cushion layer 3, and the positions of the inner container in the shell 1 can be better fixed through positioning and supporting two ends of the inner container.

Further, the foaming cushion layer 3 has the butt face with head looks adaptation, and the butt face is the sphere to contact with the head better, it is even to the holding power distribution of head, thereby avoids the inner bag to certain side slope.

Because of the gravity that foaming bed course 3 need bear the inner bag and the holding power of end cover 2, in order to avoid foaming bed course 3 to warp and lead to inner bag offset, in this embodiment, foaming bed course 3 is made by stereoplasm expanded material for foaming bed course 3's intensity is good, and atress non-deformable can avoid the inner bag to take place the skew.

Because of foaming bed course 3's intensity is good, when supporting the same inner bag, the volume and the thickness of foaming bed course 3 in this embodiment all can reduce, and the space that foaming bed course 3 took in shell 1 is little, can provide sufficient foaming space for the foaming material of heat preservation, is favorable to expanded fully and the packing of foaming material, avoids the foaming material to flow obstructed, and then improves the thermal insulation performance of water heater.

Alternatively, the foamed cushion layer may be made of a polyurethane hard foamed material. The polyurethane hard foaming material has low heat conductivity coefficient and higher heat preservation performance than polystyrene adopted in the prior art, and the density of the polyurethane hard foaming material is 32g/m³-36g/m³Greater than the density of polystyrene (25 g/m)³) And the strength of the foaming cushion layer 3 is more excellent, the thickness of the foaming cushion layer 3 can be thinner while the supporting effect is ensured, and the cost of the foaming cushion layer 3 is favorably reduced.

In addition, the foam cushion 3 in this embodiment is foamed and molded by the tool, and then is left in the air for a certain period of time. After the foaming bed course 3 that is formed by the foaming of polyurethane rigid foam material exposes the air, through oxidation production cinder, the texture is hard, supports the inner bag and can not produce the deformation to better avoid the inner bag skew.

The wall thickness of the foaming cushion layer 3 supported by the polyurethane hard foaming material can be 8-15 mm, compared with the foaming cushion layer made of polystyrene with the wall thickness of 20mm, the strength is higher, the foaming cushion layer 3 is not easy to deform when being stressed by the inner container and the end cover 2, the laminating effect with the inner container is good, and the peeling is not easy.

Optionally, the heat-insulating layer can also be made of hard foaming materials, so that the heat-insulating layer has better heat-insulating property, and the heat-insulating property of the water heater is improved.

In addition, the heat-insulating layer is made of the hard foaming material, so that the thickness of the heat-insulating layer can be reduced on the basis of achieving the same heat-insulating effect, the volume of the water heater is reduced, and the cost of the water heater is further reduced.

It can be understood that the thickness of the heat-insulating layer is too thin to meet the heat-insulating requirement; if the thickness of the heat insulation layer is too thick, the volume of the water heater is large, and the required manufacturing cost is high. In this embodiment, the thickness of the heat insulation layer is preferably 5mm-20mm, so as to take heat insulation and cost into consideration.

Further, the wall thickness of foaming bed course 3 is even in this embodiment, wholly is the hemisphere cover body, and on the closing head was located to the cover, can further reduce foaming bed course 3's volume and material quantity. Preferably, the thickness of the foamed cushion layer 3 may be 10 mm.

In this embodiment, foaming bed course 3 is the hemisphere cover body, can be by end cover 2 stable support for making one side that deviates from the inner bag of foaming bed course 3 to improve the stability of inner bag, as shown in fig. 2 and 3, one side of the orientation foaming bed course 3 of end cover 2 is provided with location structure 4, and location structure 4 has the locating surface, the locating surface and foaming bed course 3's outer profile face looks adaptation and with foaming bed course 3 butt.

Specifically, the positioning structure 4 includes a plurality of support columns 41 arranged at intervals along the circumferential direction of the inner container, the bottom portions of the support columns 41 are connected to the end cover 2, the top surfaces of the support columns 41 abut against the foam cushion layer 3, and the top surfaces of the support columns 41 form a positioning surface. The top surface of each support column 41 is an arc surface, and the radian of the arc surface is the same as that of the foam cushion layer 3, so that the top surface of each support column 41 can be in complete contact with the foam cushion layer 3.

In addition, be the annular through a plurality of support columns 41 and arrange, can reduce with the area of contact's of foaming bed course 3 on the basis, guarantee the supporting effect to foaming bed course 3 through the increase to the support position of foaming bed course 3, reduce location structure 4 and occupy the volume, thereby for the foaming material provides sufficient space, make the heat preservation that the foaming material foaming formed can the cladding outside foaming bed course 3, improve the heat preservation effect of the one end of inner bag that is close to foaming bed course 3.

In this embodiment, location structure 4 includes even and three support column 41 that the interval set up, compares four or more support columns 41 among the prior art, because of foaming bed course 3's in this embodiment intensity is good, can reduce the quantity of support column 41, is favorable to reducing the area of contact to foaming bed course 3 for more positions of foaming bed course 3 can be by the heat preservation cladding, thereby improve the thermal insulation performance of water heater.

In some embodiments, the number of the supporting columns 41 may be two.

Further, the positioning structure 4 further includes a connecting portion 42, the connecting portion 42 is disposed in a space surrounded by the plurality of supporting pillars 41, and is connected to the plurality of supporting pillars 41 respectively, and the connecting portion 42 and the foaming cushion layer 3 are disposed at intervals along the axial direction of the inner container. The connecting portion 42 connects the plurality of support columns 41, so that the strength of the positioning structure 4 can be improved on the basis of reducing the contact area between the support columns 41 and the foam cushion layer 3, and the foam cushion layer 3 and the inner container can be better supported.

As shown in fig. 1, the connection portion 42 is located below the foam cushion 3 and spaced apart from the foam cushion 3. When the heat preservation layer is formed, the foaming material can enter the space between the foaming cushion layer 3 and the connecting part 42 through the gap between the two adjacent supporting columns 41, so that the heat transfer between the foaming cushion layer 3 and the connecting part 42 is reduced, and the heat preservation performance of the water heater is further improved.

Adopt the structure of the foaming bed course 3 that flexible expanded material formed among the prior art, the outer diameter of the ring structure that a plurality of support columns 41 formed is generally not less than 2/3 of inner bag diameter, leads to location structure 4 bulky, and the foaming space that foaming bed course 3 bottom formed is little, and foaming material flow is obstructed hardly to get into, influences thermal insulation performance.

Compare prior art, the external diameter size of the loop configuration that a plurality of support columns 41 formed can be reduced to this embodiment, and the external diameter of the loop configuration that a plurality of support columns 41 formed can be 2/9-4/9 for inner bag diameter, and the volume is about prior art's 1/3, not only can provide sufficient foaming space for the foaming material, avoids the foaming material to flow obstructed, improves the even degree of heat preservation, can reduce the cost moreover, improves production efficiency.

Further, the circumference size along the inner bag of the top surface of every support column 41 reduces along the axis direction that is close to the inner bag gradually, can further reduce the area that foaming bed course 3 is sheltered from by location structure 4, corresponds the area of contact of increase foaming bed course 3 and heat preservation, improves the thermal insulation performance.

Further, the cross sectional area of support column 41 increases along the direction that deviates from the inner bag gradually for the upper end cross sectional area of support column 41 is little, and the area of sheltering from foaming bed course 3 is little, and the lower extreme cross sectional area of support column 41 is big, and is connected more stably with end cover 2, and support column 41 intensity is good, so that satisfy the supporting effect to foaming bed course 3 and inner bag.

For the part quantity that reduces the water heater, location structure 4 can with end cover 2 integrated into one piece to convenient processing avoids trompil on end cover 2, is favorable to improving the intensity of end cover 2.

Alternatively, an injection port of the foaming material may be provided on the end cap 2 and penetrate through the connecting portion 42, and the foaming material first enters between the connecting portion 42 and the foaming cushion layer 3 and then flows to other positions through the gap between the adjacent supporting columns 41. Through injection port through connection portion 42, can let the foaming material at first get into the position that the space is less, get into the position that the space is great again, overcome the resistance that less space produced to the foaming material flow through the pressure when annotating to make the foaming more even.

It should be understood that the above-described embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Numerous obvious variations, adaptations and substitutions will occur to those skilled in the art without departing from the scope of the utility model. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.

Claims (10)

1. The foaming cushion layer is used for supporting an inner container of a water heater and is characterized in that the foaming cushion layer is made of hard foaming materials, the foaming cushion layer is provided with an abutting surface matched with the inner container in shape, the abutting surface abuts against the inner container, and the wall thickness of the foaming cushion layer is uniform.

2. A foamed cushion layer according to claim 1, wherein said foamed cushion layer has a thickness of 8mm to 15 mm.

3. A water heater comprising a housing (1), an end cap (2) and a liner disposed within the housing (1), the end cap (2) being connected to the housing (1), characterized in that it further comprises a foam cushion as claimed in any one of claims 1 or 2, the foam cushion being disposed between the end cap (2) and the liner.

4. A water heater according to claim 3, characterized in that the side of the end cap (2) facing the foam cushion is provided with a positioning structure (4), which positioning structure (4) has a positioning surface adapted to the outer contour surface of the foam cushion and abutting the foam cushion.

5. The water heater according to claim 4, characterized in that the positioning structure (4) comprises a plurality of supporting columns (41) arranged at intervals along the circumferential direction of the inner container, and the top surfaces of the plurality of supporting columns (41) form the positioning surface.

6. A water heater according to claim 5, wherein the positioning structure (4) comprises three supporting columns (41) arranged uniformly and at intervals.

7. The water heater according to claim 5, wherein the positioning structure (4) further comprises a connecting portion (42), the connecting portion (42) is disposed in a space surrounded by the plurality of supporting pillars (41) and respectively connected to the plurality of supporting pillars (41), and the connecting portion (42) and the foaming cushion layer are axially spaced from each other along the inner container.

8. The water heater according to claim 5, characterized in that the top surface of each support column (41) tapers in a direction approaching the axis of the liner along the circumferential dimension of the liner.

9. A water heater according to claim 5, wherein the cross-sectional area of the supporting pillar (41) increases gradually in a direction away from the inner container.

10. A water heater according to claim 4, wherein the locating structure (4) is integrally formed with the end cap (2).

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