DEVICE FOR COMPRESSING BLOCKS OF INSULATION AND METHOD FOR COMPRESSING BLOCKS OF INSULATION

Abstract

Devices and methods for compressing thermal insulation material into blocks of insulation are disclosed which include a support surface for the compressed blocks of insulation, a compression device with a compression surface, and a feeding device for feeding thermal insulation material. By adapting the compression device for reciprocal movement between a first position, wherein the feeding device is allowed to feed thermal insulation material to a position on the support surface, and a second position, wherein, during movement from the first position to the second position of the compression device, thermal insulation material fed by the feeding device is compressed, highly compressed blocks of thermal insulation material are obtained that are suitable for use with known shredding devices.

Claims

1. A device for compressing thermal insulation material into blocks of insulation comprising: a support surface for the compressed blocks of insulation, a compression device with a compression surface, and a feeding device for feeding thermal insulation material, wherein the compression device is adapted for reciprocal movement between a first position, wherein the feeding device is allowed to feed thermal insulation material to a position on the support surface, and a second position, and wherein during movement from the first position to the second position of the compression device, thermal insulation material fed by the feeding device is compressed.

2. The device according to claim 1, wherein the thermal insulation material is loose-fill cellulose thermal insulation material.

3. The device according to claim 1, wherein the compression surface is provided with protrusions, such as ribs or nail-like protrusions.

4. The device according to claim 1, comprising a driving device for operating the compression device by hydraulic, pneumatic or electrical power, such as a rotating electrical machine.

5. The device according to claim 1, comprising means for adjusting a cross-sectional area of compressed thermal insulation material.

6. The device according to claim 5, wherein the means for adjusting a cross-sectional area of compressed thermal insulation material comprises an adjustable wall, preferably a vertically adjustable upper wall, which, when the adjustable wall is adjusted, adjusts the area of an opening defined by the adjustable wall, two side walls and the support surface.

7. The device according to claim 1, wherein, the device is adapted to compress the thermal insulation material to a density of at least 160 kg/m.sup.3.

8. A method for compressing loose-fill cellulose thermal insulation material into a block, comprising the steps: a) feeding an amount of thermal insulation material to a support surface, b) compressing the amount of thermal insulation material fed in step a), thereby creating a block of insulation, c) feeding an additional amount of thermal insulation material to the support surface, d) compressing the additional amount of thermal insulation material fed in step c), adding compressed thermal insulation material to the block of insulation, and e) repeating steps c) and d) until the block of insulation has a predetermined size.

9. The method according to claim 8, wherein the thermal insulation material is compressed to a density of at least 160 kg/m3.

10. The method according to claim 8, wherein each portion of the block is compressed to a thickness of between 0.5-1.0 inch.

Description

BRIEF DESCRIPTION OF DRAWINGS

[0018] The invention is now described, by way of example, with reference to the accompanying drawings, in which:

[0019] FIGS. 1a and 1b show a side view and an end view, respectively, of an embodiment of a device for compressing blocks of insulation material,

[0020] FIGS. 2a-f shows different the steps in the method of compressing thermal insulation material according to the invention by means of the device shown in FIGS. 1a and 1b,

[0021] FIG. 3 shows an enlarged view of a compression device comprised in the device for compression blocks shown in FIGS. 1a and 1b and a compressed block created by means of the compression device.

DESCRIPTION OF EMBODIMENTS

[0022] The invention will now be described in more detail in respect of embodiments and in reference to the accompanying drawings. All examples herein should be seen as part of the general description and therefore possible to combine in any way in general terms. Again, individual features of the various embodiments may be combined or exchanged unless such combination or exchange is clearly contradictory to the overall function of the device.

[0023] FIG. 1a shows a device 100 for compressing thermal insulation material into blocks of insulation. The device comprises a support surface 110 for compressed blocks of insulation, of which one designated 200 is shown in the figure. The compressed block of insulation 200 is comprised of several portions 200b, as will be described below. The support surface 110 is in the embodiment shown in FIG. 1 essentially horizontal, but it could also be slanting. Two side walls 150, one of which is shown with dashed lines, are provided on the support surface 110.

[0024] A compression device 120 with a compression surface 120a is provided near a first end of the support surface 110. The compression device 120 is adapted for reciprocal movement between a first position, shown with solid lines in the figure, and a second position, shown with dashed lines in the figure. The compression device 120 is operated by means of a driving device (not shown) in the form of a hydraulic, pneumatic or electrical power, such as a rotating electrical machine.

[0025] A feeding device 130 is provided for feeding thermal insulation material, preferably loose-fill cellulose thermal insulation material, to a position on the support surface 110 between the first and second positions of the compression device 120. Thus, the feeding device 130 is allowed to feed thermal insulation material to this position on the support surface 110 when the compression device is in the first position.

[0026] During movement from the first position to the second position of the compression device, thermal insulation material fed by the feeding device 130 is compressed. The degree of compression can be controlled by adjusting the cross-sectional area of the compressed material by means of an adjustable upper wall 140, which can be adjusted vertically. In a preferred embodiment, this is effected by means of two screws 140a, see FIG. 1b, showing an end view of the device 100 for compressing thermal insulation material, onto which a respective nut 140b is threaded. By means of adjusting the positions of the nuts 140b, the vertical position of the adjustable upper wall 140 is adjusted, which in turn adjusts the area of the opening defined by the upper wall 140, the two side walls 150 and the support surface 110. It is preferred that the thermal insulation material is compressed to a density of at least 160 kg/m.sup.3.

[0027] With reference to FIGS. 2a-f, the operation of the device 100 for compressing thermal insulation material will be explained in detail. First, in FIG. 2a, an amount of thermal insulation material 200a is fed by the feeding device 130 onto the support surface 110 with the compression device 120 in the first position. The compression device 120 is then rapidly moved from the first position to the second position, shown in FIG. 2b. With this movement, the thermal insulation material 200a is compressed, thereby creating a block of insulation 200, see FIG. 2b. It should be noted that no counter-support is needed for this compression, i.e., the thermal insulation material 200a is compressed due to the nature of the movement of the compression device 120. However, the first portion 200b created in the first cycle may get an uneven shape and compression, as indicated by the figures.

[0028] In FIG. 2c the compression device 120 has been moved to the first position and an additional amount of thermal insulation material 200a is fed to the support surface 110. The compression device 120 is then rapidly moved from the first position to the second position, shown in FIG. 2d. With this movement, the thermal insulation material 200a is compressed, thereby creating a block of insulation 200 comprised both of the block or portion created in the first cycle described above with reference to FIGS. 2a and 2b and the additional portion 200b added in the cycle described with reference to FIGS. 2c and 2d. This second portion created in the second cycle adheres to the first portion created in the first cycle, creating a block 200 comprised by two portions 200b adhering to each other.

[0029] In the second cycle described with reference to FIGS. 2c and 2d, the first portion 200b functions as a counter-support, improving the compression of the second portion 200b. It will be realized that the first portion 200b is displaced to the right in the figure during the compression of the second portion 200b.

[0030] In FIG. 2e the compression device 120 has again been moved to the first position and an additional amount of thermal insulation material 200a is fed to the support surface 110. The compression device 120 is then rapidly moved from the first position to the second position, shown in FIG. 2f. With this movement, the thermal insulation material 200a is compressed, thereby creating a block of insulation 200 comprised both of the block created in the first cycle described above with reference to FIGS. 2a and 2b, the second cycle described above with reference to FIGS. 2c and 2d and the additional portion added in the cycle described with reference to FIGS. 2e and 2f.

[0031] This procedure is repeated until the block of insulation 200 obtains a predetermined, i.e., desired size.

[0032] Each portion 200b of the block 200 has a thickness or extension in the longitudinal direction of the block 200 depending on the amount of thermal insulation material fed in each cycle, the speed, power and distance of the movement of the compression device 120, the cross-sectional area of the block 200 etc. In a preferred embodiment, each portion of the block 200 is between 1.25 and 2.5 cm (0.5-1.0 inch). Thus, it is appreciated that the figures are not to scale.

[0033] In order to achieve bonding between the different portions of the block 200, the compression surface 120a may be provided with protrusions 120b, such as ribs or nail-like protrusions. This creates an uneven interface between two adjacent portions of the block 120, such as the one shown in FIG. 3, showing a sectional view of the block 200 shown in FIG. 2d.

[0034] The division of the compressed block of insulation 200 into several portions 200b facilitates shredding of the block by means of a shredding device, such as the ones referred to in the background art section.

[0035] A device 100 for compressing thermal insulation material for creating a single compressed block of insulation 200 of has been shown and described. It will be realized that two or more such devices may be provided in parallel, using the power of a single driving device to effect the reciprocal movement of the compression device.