CN215229116U

CN215229116U - Hand-held hot compress device

Info

Publication number: CN215229116U
Application number: CN202121660820.5U
Authority: CN
Inventors: 沈雪峰
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-07-21
Filing date: 2021-07-21
Publication date: 2021-12-21
Anticipated expiration: 2031-07-21

Abstract

A hand-held hot compress device comprises a heating element, a shell, a heat conducting element and gauze, wherein the shell is provided with a first end and a second end which are far away from each other, the first end is provided with a containing cavity with an opening at one side, and the joint of the second end and the first end is a hand-held part; the heat conducting piece is arranged in the accommodating cavity, the heat conducting piece is provided with a heating cavity with an opening at one side, and the heating piece is attached to the outer side of the heat conducting piece and is electrically connected with an external power supply through a lead; the heating cavity and the accommodating cavity are provided with openings at the same side, the heating cavity is provided with a convex conical surface at the bottom, and the heating cavity is used for accommodating and heating the medicine; the gauze is used for covering the opening of the containing cavity. This hot compress ware of hand-held type carries out diversified heating through setting up the medicine of heat conduction piece in to the heating chamber, improves the heat penetrability of this hot compress ware of hand-held type, through establishing to protruding type conical surface heating chamber bottom, increases the heated area of medicine for the medicine can thermally equivalent.

Description

Hand-held hot compress device

Technical Field

The utility model relates to the technical field of health care appliances, in particular to a hand-held hot compress device.

Background

The hot compress therapy is an external therapy which selects a certain prescription according to clinical dialectics, processes the traditional Chinese medicines and then packs the traditional Chinese medicines into a cloth bag, heats the traditional Chinese medicines and then applies the traditional Chinese medicines to the local part of a patient, and achieves the effects of warming and dredging the channels and collaterals, promoting blood circulation to stop pain, dispelling wind and removing dampness, reducing swelling and removing blood stasis and the like through the combined action of the efficacy of the medicines and the heat. At present, the hot compress medicine bag has the problems of fast heat dissipation, inconvenient operation, easy scald and the like clinically in the traditional Chinese medicine hot compress therapy, taking the traditional Chinese medicine hot compress mode as an example, the traditional hand-held traditional Chinese medicine hot compress mode is adopted, the medicine bag is heated mainly in a microwave or steamer mode, and the temperature of the heated medicine bag is reduced along with the time in the use process, so the hot compress effect is reduced, and in addition, the medicine bag held by an operator is easy to be scalded by the medicine bag gas; in addition, different patients have different tolerance degrees to the temperature of the hot compress medicine bag, and the temperature of the hot compress medicine bag is controlled without the risk of scalding the patients.

In order to solve the above problems, hot compress devices which heat the medicine bag by adopting an electric heating mode are available on the market to realize the temperature control of the medicine bag, but the hot compress devices can only heat dry medicine bags and cannot heat wet medicine bags, while the traditional Chinese medicine hot compress therapy adopts the basic herbal medicine bag, and in order to realize better curative effect, the medicine bags all need to be humidified, for example, some white vinegar or white spirit is added for humidification, so as to improve the drug effect; in addition, the humidifying medicine bag is electrically heated, so that high-temperature gas which hurts the skin is easily generated at the bottom of the humidifying medicine bag, the medicine bag cannot be uniformly heated, and the heat penetrability of the humidifying medicine bag is not good as that of a microwave or a steamer.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

In order to solve the problems, the utility model provides a hand-held hot compress device.

(II) technical scheme

In order to achieve the above object, the utility model provides a following technical scheme:

a hand-held hot compress device for containing and heating a medicament, the hand-held hot compress device comprising a heat generating member, further comprising:

the shell is provided with a first end and a second end which are far away from each other, the first end is provided with an accommodating cavity with an opening on one side, and the joint of the second end and the first end is a handheld part;

the heat conducting piece is arranged in the accommodating cavity and provided with a heating cavity with an opening at one side, and the heating piece is attached to the outer side of the heat conducting piece and is electrically connected with an external power supply through a wire;

the heating cavity and the accommodating cavity are provided with openings at the same side, the bottom of the heating cavity is provided with a convex conical surface, and the heating cavity is used for accommodating and heating the medicine;

the gauze is used for covering the opening of the containing cavity.

Preferably, the bottom of the accommodating cavity is provided with an exhaust passage, the exhaust passage penetrates through the second end of the outer shell to be communicated with the outside, and the heating cavity wall is provided with a gas guide hole communicated with the exhaust passage, so that gas in the heating cavity can be discharged to the outside through the gas guide hole and the exhaust passage in sequence.

Preferably, still include the inner ring, the inner ring is embedded in the heating chamber, the inner ring lateral wall is equipped with the annular and walks the gas groove, it is equipped with a plurality of switches-on to walk the gas groove to the annular cross the gas pocket in heating chamber, cross the gas pocket and pass through the annular walk the gas groove with the air guide hole switch-on.

Preferably, the outer wall of the heat conducting element is provided with an air guide groove corresponding to the air guide hole, and the air guide groove is communicated with the exhaust channel.

Preferably, the exhaust device further comprises an air guide pipe, the air guide pipe is paved on the exhaust channel, one end of the air guide pipe is communicated with the air guide groove, and the other end of the air guide pipe is communicated with the outside.

Preferably, an installation cavity is arranged on the outer side of the heat-conducting piece, the heating piece is arranged in the installation cavity, and a threaded hole is also formed in the outer side of the heat-conducting piece;

the hand-held hot compress further comprises:

the cooling fin covers the mounting cavity;

the first end of the fixed pipe penetrates through the radiating fin and is in threaded connection with the threaded hole, and the second end of the fixed pipe extends out of the second end of the shell;

the fixing piece, the fixing piece is equipped with two, wherein, one fixing piece threaded connection in the fixed pipe first end and with the fin butt, another fixing piece threaded connection in the fixed pipe second end and with the shell butt.

Preferably, the fixed pipe both ends run through the design, fixed pipe first end is equipped with the through-hole, the wire accessible through-hole of the piece that generates heat, fixed pipe and external power electric connection.

Preferably, the method further comprises the following steps:

the heat insulation piece is arranged between the heat conduction piece and the side wall of the accommodating cavity;

the heat absorbing piece is arranged between the radiating fin and the bottom of the containing cavity.

Preferably, the shell is made of light and heat-insulating materials, the heat conducting piece is made of metal materials easy to conduct heat, the heat insulating piece is made of aluminum foil, and the heat absorbing piece is made of cotton.

(III) advantageous effects

Compared with the prior art, the beneficial effects of the utility model are that:

the handheld hot compress device comprises a heating element, a shell, a heat conducting element and gauze, wherein the shell is provided with a first end and a second end which are far away from each other, the first end is provided with an accommodating cavity with an opening at one side, and the joint of the second end and the first end is a handheld part; the heat conducting piece is arranged in the accommodating cavity, the heat conducting piece is provided with a heating cavity with an opening at one side, and the heating piece is attached to the outer side of the heat conducting piece and is electrically connected with an external power supply through a lead; the heating cavity and the accommodating cavity are provided with openings at the same side, the heating cavity is provided with a convex conical surface at the bottom, and the heating cavity is used for accommodating and heating the medicine; the gauze is used for covering the opening of the containing cavity. This hot compress ware of hand-held type carries out diversified heating through setting up the medicine of heat conduction piece in to the heating chamber, improves the heat penetrability of this hot compress ware of hand-held type, through establishing to protruding type conical surface heating chamber bottom, increases the heated area of medicine for the medicine can thermally equivalent.

Drawings

The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description, do not constitute a limitation of the invention, in which:

fig. 1 shows an overall structural diagram of an embodiment of the present invention;

fig. 2 shows a schematic overall structure diagram of the embodiment of the present invention;

fig. 3 shows a schematic overall structure diagram three of the embodiment of the present invention;

fig. 4 shows an exploded view of an embodiment of the present invention;

figure 5 shows a bottom view of the overall structure of an embodiment of the present invention;

FIG. 6 shows a cross-sectional view A-A of FIG. 5;

fig. 7 shows a schematic structural view of a housing of an embodiment of the invention;

fig. 8 shows a schematic structural view of a heat-conducting member according to an embodiment of the present invention;

figure 9 shows a schematic view of the inner ring structure of the force application of the present invention;

fig. 10 is a schematic view showing another structure of the heat-conducting member of the present invention.

In the figure: the heat-absorbing device comprises a shell 1, a 10 accommodating cavity, an 11 exhaust channel, a 12 handheld part, a 2 heat-conducting part, a 20 heating cavity, a 200 air guide hole, a 201 air guide groove, a 21 heat-conducting bottom plate, a 22 heat-conducting ring, 3 gauze, a 4 inner ring, a 40 annular air-passing groove, a 400 air-passing hole, a 5 air guide pipe, 6 radiating fins, a 7 fixing pipe, 8 fixing parts, 9 heating parts, 90 heat-insulating parts and 91 heat-absorbing parts.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to the accompanying drawings 1-10, the utility model discloses a hand-held hot compress device for holding and heating medicine, which comprises a heating element 9, a shell 1, a heat conducting element 2 and gauze 3, wherein the shell 1 is provided with a first end and a second end which are far away from each other, the first end is provided with a holding cavity 10 with an opening at one side, and the joint of the second end and the first end is a hand-held part 12; the heat conducting piece 2 is arranged in the accommodating cavity 10, the heat conducting piece 2 is provided with a heating cavity 20 with an opening at one side, and the heating piece 9 is attached to the outer side of the heat conducting piece 2 and is electrically connected with an external power supply through a lead; the heating cavity 20 and the accommodating cavity 10 are designed to be opened on the same side, the bottom of the heating cavity 20 is designed to be a convex conical surface, and the heating cavity 20 is used for accommodating and heating the medicine; the gauze 3 is used for covering the opening of the containing cavity 10.

In this embodiment, the hand-held hot compress device mainly heats bulk drugs, i.e., bulk Chinese herbal medicines, and before the hand-held hot compress device is used for heating, humidification is required for improving the drug effect of the drugs, for example, a liquid capable of promoting the drug effect, such as white spirit or vinegar, is dropped on the drugs; the hand-held hot compress device can also heat the bagged medicine package.

As shown in fig. 1, the diameter of the first end of the housing 1 is larger than that of the second end of the housing 1, the joint of the second end and the first end is a handheld portion 12, which is convenient for a user to hold and use, and the accommodating cavity 10 is a cylindrical cavity; the heat conducting piece 2 is set to be cylindrical corresponding to the accommodating cavity 10, and is provided with a heating cavity 20 with an opening at one side, the heat conducting piece 2 and the accommodating cavity 10 are coaxially arranged, when the heat conducting piece 2 is installed in the accommodating cavity 10, the outer side wall of the heat conducting piece 2 keeps a 1mm distance with the cavity wall of the accommodating cavity 10, the average wall thickness of the heat conducting piece 2 is smaller than 3mm, so that heat generated by the heating piece 9 is conducted into the heating cavity 20 through the heat conducting piece 2 to heat the medicine, further, the bottom of the heating cavity 20 is designed to be a convex conical surface, when the medicine is placed in the heating cavity 20, the bottom of the convex conical surface can increase the heating area of the medicine, so that the whole medicine is heated more uniformly, the local heating condition is avoided, in addition, the heat is conducted into the heating cavity 20 from the annular peripheral wall of the heat conducting piece 2 and the bottom of the heat conducting piece 2, the penetrability of the heat can be effectively increased through multi-direction heat conduction, so that the medicine placed in the heating cavity 20 can be heated uniformly and effectively, and because the heating element 9 is arranged outside the heating cavity 20, the phenomenon that the humidifying medicine is directly heated by the heating element 9 to cause over-high temperature on the local part of the medicine is avoided, and then the hand-held hot compress device scalds a patient when in use.

It should be further noted that the shell 1 is made of a light and heat-insulating material, and the heat conducting member 2 is made of a metal material which is easy to conduct heat, specifically, the shell 1 is made of wood, is light in texture, and has the functions of being convenient to hold and isolating a heat source; the heat conducting piece 2 is made of aluminum, so that the heat conducting performance is good, and the cost is low; the heating part 9 is a ceramic electric heating sheet, is provided with a 12V power supply and a corresponding temperature control time switch, the heating part 9 is electrically connected with the power supply through a lead, and the heating part 9 is the prior art and is not repeated in the embodiment.

Based on the scheme, the use mode of the handheld hot ironing and applying device is as follows: put into heating chamber 20 with humidification's medicine, start the board that generates heat, the heat gets into heating chamber 20 through heat-conducting piece 2 and carries out heat treatment to the medicine, treat after the medicine reaches corresponding temperature, close gauze 3 lid and hold chamber 10 opening, and tighten up 3 tip of gauze to handheld portion 12 and fix in handheld portion 12 department through elastic webbing or rope, user of service grips handheld portion 12 afterwards, can use this handheld hot compress ware to press the patient and apply, user of service still can control the heat supply temperature of the board that generates heat through the switch at this in-process, so that the medicine in heating chamber 20 can be with the constant temperature. Generally speaking, this hot compress ware of hand-held type carries out diversified heating through setting up heat-conducting piece 2 to the medicine in the heating chamber 20, improves the heat penetrability of this hot compress ware of hand-held type, through establishing heating chamber 20 bottom into protruding type conical surface, increases the heated area of medicine for the medicine can the thermally equivalent.

Because this hand-held type hot compress ware mainly carries out heat treatment to the medicine of humidification, can produce gas, traditional chinese medicine is ironed and is applied the therapy and directly pass through 3 parcel medicines of gauze, gauze 3 is directly held to the user of service, the higher palm that can lead to user of service of medicine temperature after the heating is scalded, in order to avoid user of service when using this hand-held type hot compress ware, the palm of user of scald of gas that inside medicine produced, this embodiment still is equipped with gaseous derivation structure, specifically as follows:

the bottom of the accommodating cavity 10 is provided with an exhaust passage 11, the exhaust passage 11 penetrates through the second end of the housing 1 to be communicated with the outside, and the cavity wall of the heating cavity 20 is provided with an air guide hole 200 communicated with the exhaust passage 11, so that the gas in the heating cavity 20 can be exhausted to the outside through the air guide hole 200 and the exhaust passage 11 in sequence. Specifically, 11 one end of exhaust passage and exhaust hole switch-on, the other end runs through 1 second end of shell to make gaseous through exhaust passage 11 from 1 second end tip of shell discharge, and handheld portion 12 then sets up second end and first end junction, scald user's hand when can avoiding gas discharge, in this embodiment, exhaust passage 11 piles up to be equipped with two, and corresponding exhaust hole is equipped with two sets ofly, so that the more effective gas that discharges heating chamber 20.

Furthermore, in order to better guide the gas discharged from the gas guide holes 200 to the exhaust channel 11, gas guide grooves 201 are formed in the outer wall of the heat conducting member 2 corresponding to the gas guide holes 200, and the gas guide grooves 201 are communicated with the exhaust channel 11. The air guide groove 201 is opened at the bottom of the heat conductive member 2 to communicate with the exhaust passage 11, so that the air is guided to the exhaust passage 11 by the air guide groove 201 after passing through the air guide hole 200.

It should be noted that, in the present embodiment, as shown in fig. 8, the heat conducting member 2 is formed by integral molding; in other embodiments, as shown in fig. 10, the heat conducting member 2 may be made in a split manner, specifically, the heat conducting member 2 may be composed of a heat conducting bottom plate 21 and a heat conducting ring 22, the heat conducting ring 22 is attached to the outer side of the heat conducting bottom plate 21 and tightly attached to the heat conducting bottom plate, the heat conducting bottom plate 21 and the heat conducting ring 22 enclose to form the heating cavity 20, the front convex conical surface of the heat conducting bottom plate 21 is designed to increase the heat conducting area, the back surface is used for installing the heating member 9, the heat conducting ring 22 is provided with an air guiding hole 200, and an air guiding groove 201 is provided corresponding to the air guiding hole 200, so as to facilitate the exhaust of the gas generated in the heating cavity 20.

Because the shell 1 is made of wood, and the exhaust passage 11 is directly arranged on the shell 1, in order to reduce the permeation damage of air to the shell 1, the hand-held hot compress device also comprises an air duct 5, the air duct 5 is paved on the exhaust passage 11, one end of the air duct 5 is communicated with the air guide groove 201, and the other end is communicated with the outside; specifically, the gas guide tube 5 is made of heat-resistant metal, and the gas guide tube 5 is fixed on the exhaust passage 11 through sealant.

In order to gather the gas in the heating cavity 20 at the gas guide hole 200, so that the gas can be exhausted more quickly and better, the hand-held hot compress device also comprises an inner ring 4, the inner ring 4 is embedded in the heating cavity 20, the outer side wall of the inner ring 4 is provided with an annular air-passing groove 40, the annular air-passing groove 40 is provided with a plurality of air-passing holes 400 communicated with the heating cavity 20, the air-passing holes 400 are communicated with the air-guiding holes 200 through the annular air-passing groove 40, specifically, the outer diameter of the inner ring 4 is slightly smaller than the inner diameter of the heating cavity 20, so that the inner ring 4 can be clamped in the heating cavity 20, and the outer wall of the inner ring 4 is provided with a concave annular air-passing groove 40, the annular air-passing groove 40 and the cavity wall of the heating cavity 20 enclose to form an annular air-passing channel, and communicated with the air guide holes 200, a plurality of air passing holes 400 are also arranged on the annular air passing groove 40, so that the gas in the heating cavity 20 can pass through the gas passing hole 400, the annular gas passage and the gas guide hole 200 in sequence and finally enter the gas guide pipe 5 through the gas guide groove 201.

As shown in fig. 4 and fig. 6, in order to improve the overall structural stability of the hand-held hot compress device, an installation cavity is arranged on the outer side of the heat conducting member 2, the heating member 9 is arranged in the installation cavity, and a threaded hole is also arranged on the outer side of the heat conducting member 2; the hand-held hot compress device also comprises a radiating fin 6, a fixed tube 7 and a fixed piece 8, wherein the radiating fin 6 covers the installation cavity; the first end of the fixed tube 7 penetrates through the radiating fin 6 to be in threaded connection with the threaded hole, and the second end of the fixed tube extends out of the second end of the shell 1; two fixing pieces 8 are arranged, wherein one fixing piece 8 is in threaded connection with the first end of the fixing tube 7 and is abutted against the radiating fin 6, and the other fixing piece 8 is in threaded connection with the second end of the fixing tube 7 and is abutted against the shell 1; specifically, install fin 6 additional and can reduce the temperature that generates heat 9 internal component, reduce the consumption, the extension generates heat the life of 9, fixes heat-conducting member 2 on shell 1 through fixed pipe 7 in addition, avoids when using this hand-held type hot compress ware, and the condition that the internals appears rocking at will.

Further, the design is run through at fixed 7 both ends of pipe, and fixed 7 first ends of pipe are equipped with the through-hole, and the wire accessible through-hole of piece 9 that generates heat, fixed 7 of pipe and external power source electric connection, and is concrete, and fixed 7 of pipe and 5 separation settings of air duct for the wire of piece 9 that generates heat does not receive gaseous influence, makes overall structure safer, reasonable.

As shown in fig. 4 and fig. 6, the hand-held hot compress device further comprises a heat insulating member 90 and a heat absorbing member 91, the heat insulating member 90 is disposed between the heat conducting member 2 and the sidewall of the accommodating chamber 10, specifically, the heat insulating member 90 is made of aluminum foil, specifically, aluminum foil fabric, the heat insulating member 90 is disposed to enable heat emitted from the heat conducting member 2 to be only conducted to the heating chamber 20, and simultaneously, damage of the heat to the housing 1 is avoided, in addition, the heat insulating member 9 and the air guide groove 201 form a gas guide space in an enclosing manner, so that gas coming out through the air guide hole 200 flows along the gas guide space to the exhaust passage 11, and thus, gas guide of the air guide groove 201 can be optimized, and gas can be prevented from directly contacting with the housing 1; the heat absorbing member 91 is arranged between the heat radiating fin 6 and the bottom of the accommodating cavity 10, specifically, the heat absorbing member 91 is made of cotton, the heat absorbing member 91 mainly absorbs heat emitted from the bottom of the heat radiating fin 6 and the bottom of the heat conducting member 2, and meanwhile, the cotton heat absorbing member 91 can also slow down the collision between the heat conducting member 2 and the shell 1.

It should be noted that while the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A hand-held hot compress for containing and heating a medicament, the hand-held hot compress comprising a heat generating member (9), characterized by further comprising:

the shell (1) is provided with a first end and a second end which are far away from each other, the first end is provided with an accommodating cavity (10) with an opening on one side, and the joint of the second end and the first end is a handheld part (12);

the heat conducting piece (2) is installed in the accommodating cavity (10), the heat conducting piece (2) is provided with a heating cavity (20) with an opening at one side, and the heating piece (9) is attached to the outer side of the heat conducting piece (2) and is electrically connected with an external power supply through a lead;

the heating cavity (20) and the accommodating cavity (10) are designed to be opened on the same side, the heating cavity (20) is designed to be provided with a convex conical surface at the bottom, and the heating cavity (20) is used for accommodating and heating the medicine;

the gauze (3), gauze (3) are used for closing hold the chamber (10) opening.

2. The hand-held hot ironing device according to claim 1, wherein an exhaust passage (11) is provided at the bottom of the accommodating chamber (10), the exhaust passage (11) penetrates through the second end of the housing (1) to communicate with the outside, and an air guide hole (200) communicated with the exhaust passage (11) is provided on the wall of the heating chamber (20), so that the air in the heating chamber (20) can be exhausted to the outside through the air guide hole (200) and the exhaust passage (11) in sequence.

3. The hand-held hot compress device according to claim 2, further comprising an inner ring (4), wherein the inner ring (4) is embedded in the heating cavity (20), an annular air-passing groove (40) is formed in an outer side wall of the inner ring (4), a plurality of air-passing holes (400) communicated with the heating cavity (20) are formed in the annular air-passing groove (40), and the air-passing holes (400) are communicated with the air-guiding holes (200) through the annular air-passing groove (40).

4. A hand-held hot compress according to claim 2, characterised in that the outer wall of the heat-conducting element (2) is provided with air-guiding grooves (201) corresponding to the air-guiding holes (200), the air-guiding grooves (201) being connected to the air-discharging channel (11).

5. A hand-held hot compress according to claim 4, further comprising an air duct (5), wherein the air duct (5) is laid on the air discharge channel (11), and one end of the air duct (5) is connected to the air guide groove (201), and the other end is connected to the outside.

6. A hand-held hot compress device according to claim 1, wherein a mounting cavity is arranged on the outer side of the heat conducting member (2), the heating member (9) is arranged in the mounting cavity, and a threaded hole is arranged on the outer side of the heat conducting member (2);

the hand-held hot compress further comprises:

the heat radiating fin (6), the said heat radiating fin (6) covers the said installation cavity;

the first end of the fixed pipe (7) penetrates through the radiating fin (6) and is in threaded connection with the threaded hole, and the second end of the fixed pipe (7) extends out of the second end of the shell (1) to be arranged;

fixing piece (8), fixing piece (8) are equipped with two, wherein, one fixing piece (8) threaded connection in fixed pipe (7) first end and with fin (6) butt, another fixing piece (8) threaded connection in fixed pipe (7) second end and with shell (1) butt.

7. The hand-held hot compress device according to claim 6, wherein two ends of the fixing tube (7) are designed to penetrate through, a through hole is formed at the first end of the fixing tube (7), and the lead of the heating member (9) can be electrically connected with an external power supply through the through hole and the fixing tube (7).

8. A hand-held hot iron according to claim 6 further comprising:

a thermal insulation member (90), wherein the thermal insulation member (90) is arranged between the heat conduction member (2) and the side wall of the accommodating cavity (10);

the heat absorbing piece (91), the heat absorbing piece (91) is arranged between the heat radiating fin (6) and the bottom of the containing cavity (10).

9. A hand-held hot iron according to claim 8, characterised in that the housing (1) is of a light and thermally insulating material, the heat conducting member (2) is of a metal material which is readily heat conductive, the heat insulating member (90) is of aluminium foil and the heat absorbing member (91) is of cotton.