CN219248098U - Thermal appliance comprising a blanket divided into a plurality of zones heated to different temperatures - Google Patents

Abstract

The present utility model relates to a thermal appliance comprising a blanket divided into a plurality of zones heated to different temperatures, comprising: a blanket comprised of at least two textile elements secured to one another; a plurality of seams arranged substantially parallel to each other, designed for securing the textile elements to each other; a plurality of channels located in the space between two seams adjacent to each other; a single heating element consisting of alternating linear portions substantially parallel to each other and curved elements connecting two of said linear portions, wherein the linear portions are adapted to be accommodated in respective channels.

Description

Thermal appliance comprising a blanket divided into a plurality of zones heated to different temperatures

Technical Field

The present utility model relates to a thermal appliance, such as a heat blanket, a heating mat, a thermal bed warmer, a heating mat and the like; the utility model relates in particular to a thermal appliance provided with a fabric blanket and divided into a plurality of zones heated to different temperatures.

Background

Heat blankets, heating pads, hot warmers, heating pads, and similar products have long been known and generally include a power control unit and an operating unit electrically connected thereto. The operating unit generally comprises a blanket, for example consisting of two layers of textile material bonded together, and at least one heating element distributed in a channel arranged inside the blanket.

In heat blankets known in the art, the heating element is typically constituted by at least one electric wire arranged in a coil, which consists of alternating linear portions and curved elements (or "loops") connecting two adjacent linear portions, whereas the channels are typically arranged at a uniform distance from each other, so that the surface temperature distribution of the heat blanket is uniform.

Certain types of heat blankets known in the art are manufactured to reach a temperature in the area of the user's foot that is higher than the temperature in the area of the rest of the user's body. This can meet the typical requirement that the user want the foot area to be hotter than the body area.

Such a temperature increase in a specific area of the body is generally achieved in two different ways.

In a first way, the heat blanket is equipped with two independent heating element circuits, which can be selected so that the user can choose between various possibilities by means of specific commands: heating only the heating element in the foot region, heating only the heating element in the body region, or heating both the heating element in the foot region and the heating element in the body region, wherein the temperatures of the two regions may be different.

However, this solution is not very advantageous, firstly because of the two circuits, which lead to an expensive price, and, furthermore, because it is necessary to use complex connectors with multiple wires or to assist in electronic components such as diodes inserted in the connectors.

In a second way, by arranging a single heating element, the distance between two linear portions of the same heating element in the foot region is made smaller than the distance between two linear portions of the same heating element in the body region, so that the temperature difference in different regions of the heat blanket is obtained. Whereby the heat blanket will reach a higher temperature in such a corresponding area of smaller distance (foot area).

However, even the second solution is not very advantageous, since the channels in which the heating elements are housed are generally obtained by sewing techniques using standard machines that provide the sewn channels with a constant distance from each other. Thus, it is very problematic to be able to vary the distance between two linear portions of a heating element within a channel that always has the same width in certain areas of the heat blanket.

Patent number GB 767954 discloses a two-layer fleece fabric forming a blanket, a bed warmer or a mat, woven in such a way that the layers are connected on their inner surfaces by wefts that are spaced apart to form channels for receiving heating resistance wires, and the inner surfaces of the layers are lightly felted by milling to hold the wires in place. The resistance wire passes through the external leads in parallel loops and some of the channels are empty.

Chinese utility model CN210407920U relates to a heating system comprising an electric blanket comprising a body and an electric heating element, the plug being integrated with a power adapter. The first temperature sensor is used for detecting the temperature of the power adapter and transmitting a temperature signal to a controller for operating the first switching element according to the temperature signal. The heating system can detect the temperature of the power adapter, and when the power adapter is overheated, the controller can cut off the power supply to prevent accidents.

Chinese patent No. CN105942771A provides a multifunctional hot compress health blanket with temperature adjustable water circulation, which comprises a main machine and a blanket body. The main machine is internally provided with a power supply, a circulating water pump, a controller, a water storage tank and a heating module. The hose is placed inside the blanket body. A thermometer is arranged in the water storage tank. The controller is in control connection with the thermometer and the heating module to adjust the temperature, the blanket body is divided according to the human body, the part needing to be heated is heated, and the part needing not to be heated is not heated.

U.S. patent No. us7038170 discloses a thermal blanket that incorporates a channel area for receiving heat and sensor wires. The blanket of the utility model includes an arrangement of seam structures defining channels that house substantially discrete elongated heating and sensing elements that are arranged in a substantially similar pattern within the blanket.

International patent application No. wo09075676 A2 discloses a woven fabric system comprising a top fabric layer, a heating element comprising at least two conductive buses, wherein said conductive buses are parallel to each other, a series of resistance wires, a horizontal conductive bus between said conductive buses and connecting them to each other, and at least one bottom fabric layer. The top fabric layer, heating element, and bottom fabric layer are interconnected to prevent movement of the heating element within the system.

The applicant of the present utility model has therefore found that it is necessary to make in a simple and economical way a thermal appliance provided with at least two zones capable of reaching different temperatures according to the needs of the user.

Disclosure of Invention

In a first aspect, the utility model relates to a thermal appliance.

The applicant of the present utility model has in fact surprisingly found that the technical problem encountered above can be effectively and reliably solved by a thermal appliance comprising: a) A blanket consisting of at least two textile elements secured to each other; b) A plurality of seams arranged substantially parallel to each other for securing the at least two textile elements to each other; c) A plurality of channels, wherein each of the channels occupies a space between two of the seams adjacent to each other, and wherein a width of the plurality of channels is constant; d) A single heating element consisting of alternating linear portions substantially parallel to each other and curved elements (or "rings") connecting two of said adjacent linear portions, wherein each of said linear portions of the single heating element is adapted to be contained in a respective channel.

The thermal appliance of the present utility model further comprises at least one sequence S1 of channels consisting of a first channel inside which there is a corresponding first linear portion of a heating element, at least one second channel adjacent to the first channel inside which there is a corresponding second linear portion of a heating element, and at least one third channel adjacent to the at least one second channel, wherein there is no linear portion inside the at least one third channel of the heating element.

In this way, since there are two adjacent channels, with a portion of the heating element being present in each channel (instead of having alternating channels, wherein the channel in which the heating element is arranged is always adjacent to the channel in which the heating element is not present, as in the current prior art appliances), a higher temperature T1 can be obtained on the surface of the thermal appliance at said two channels adjacent to the heating element.

In fact, the presence of these two channels arranged adjacent to each other, each with a portion of the heating element therein, generates a power densification of greater than about 30% in contrast to the appliances known in the art, wherein between these two channels there is a channel without heating element.

In addition, overheating of the blanket may be avoided due to the presence of a channel in which there is no heating element, adjacent to a pair of channels in which the heating element is contained.

Furthermore, the same economic and manufacturing benefits are maintained thanks to the presence of a single circuit managing a single heating element and to the presence of a seam securing said at least two textile elements to each other.

In this context, the term "heating appliance" refers to an appliance, such as a heat blanket, a bed warmer, a heating blanket, a heating mat or similar heat appliance, primarily but not exclusively for heating a bed or a person on a bed, having a substantially flat shape and any size, capable of covering the bed entirely or only a part thereof or a part of the body or a part of the floor.

According to a preferred embodiment, the thermal appliance is a thermal blanket or a thermal bed warmer.

According to a preferred embodiment, the thermal appliance comprises at least two, preferably at least three repetitions of the channel sequence S1.

The presence of a plurality of such sequences thus allows to obtain a higher T1 temperature on a larger surface of the thermal appliance, while avoiding overheating.

The blanket of the heat blanket includes a first area adapted to be placed in a position corresponding to a user's foot (hereinafter also referred to as a "foot area"); a second region adapted to be placed at a position corresponding to the waist of the user (hereinafter also referred to as "waist region"); and a third region adapted to be placed in a position corresponding to a shoulder of a user (hereinafter also referred to as "shoulder region"), and wherein the at least one channel sequence S1 is placed in the first region ("foot region").

In this way, the foot region reaches a higher temperature due to the presence of two adjacent channels containing heating elements therein, and typically the heat blanket user requires the foot region to have a higher temperature T1 than the other regions of the body (the lumbar region and the shoulder region).

According to another preferred embodiment, in addition to the presence of said sequence S1 of foot regions, there is also at least one adjacent channel sequence S2 inside the position corresponding to said second lumbar region and said third shoulder region, the at least one adjacent channel sequence S2 being constituted by said first channel having inside it a corresponding first linear portion of the heating element and said third channel having inside it no linear portion of the heating element.

Thereby two areas of different temperature are obtained in the heat blanket.

In fact, in addition to having an S1 sequence in the foot region where the T1 temperature is generated, it is possible to achieve a certain user-desired comfort T2 temperature in these regions, since there is such an alternation of S2 channels with and without heating elements in both the lumbar region and the shoulder region, but this temperature T2 is lower than the T1 temperature achieved in the foot region.

According to a further preferred embodiment, in addition to the presence of the sequence S1 in the foot region and the presence of the sequence S2 in the shoulder region, the second lumbar region presents a third sequence S3 of at least one adjacent channel, the third sequence S3 being constituted by the one first channel and two of the third channels, wherein the one first channel has a corresponding first linear portion of the heating element therein and the two of the third channels have no linear portions of the heating element therein.

Thereby three areas of different temperature are obtained in the heat blanket.

In fact, in addition to having an S1 sequence in the foot region where T1 temperature is generated and an S2 sequence in the shoulder region where T2 temperature is generated, due to the alternation of such S3 channels in the lumbar region, it is also possible to reach a T3 temperature in the lumbar region which is somewhat comfortable for the user, the T3 temperature being in any case lower than the temperature T1 reached in the foot region and the temperature T2 reached within the sequence S2 shown above.

According to a further preferred embodiment, in addition to the presence of said sequence S1 in the foot region and of said sequence S2 in the waist region, at least one adjacent channel sequence is present at said third shoulder region, which sequence is constituted by said one first channel and two said third channels, wherein said first channel has a corresponding first linear portion of a heating element therein and two said third channels have no linear portion of a heating element therein.

Thereby three zones of different temperature are obtained in the heat blanket.

In fact, in addition to having an S1 sequence in the foot region where the T1 temperature is generated and an S2 sequence in the shoulder region where the T2 temperature is generated, since there is such an alternation of S3 channels in the shoulder region, it is also possible to reach a T3 temperature in the shoulder region which is somewhat pleasant for the user, the T3 temperature being in any case lower than the temperature T1 reached in the foot region and the temperature T2 reached in the lumbar region.

According to another preferred embodiment, in addition to the presence of said sequence S1 in the foot region, a third sequence S3 of at least one adjacent channel is present in said second lumbar region and in said third shoulder region, the third sequence S3 being constituted by said first channel and two of said third channels, wherein there is a corresponding first linear portion of a heating element in said first channel and no linear portion of a heating element in both of said third channels.

Thereby two areas of different temperature are obtained in the heat blanket.

In fact, in addition to having an S1 sequence in the foot region where the T1 temperature is generated, it is also possible to reach a certain temperature T3 in these regions, which is comfortable for the user, thanks to the alternation of such S3 channels in the shoulder region and in the lumbar region, the temperature T3 being in any case lower than the temperature T1 reached in the foot region and the temperature T2 reached in the channel sequence S2 shown above. According to this embodiment, the temperature difference between the temperature T1 of the foot region and the temperature T3 of the lumbar and shoulder regions will be very pronounced.

According to a preferred embodiment, the thermal appliance further comprises at least one fixing element adapted to allow fixing of the heating element to at least one of the textile elements corresponding to at least one of the rings of the heating element.

In this way, the fixing element allows to keep the heating element still in correspondence with each ring, avoiding accumulation of the heating element on the ring edge during use by the user and after accidental movement during the production phase.

According to a preferred embodiment, the fixing element is selected from the group consisting of adhesives, double-sided glues, solvent-based glues, hot melt glues, pressure-sensitive adhesives and other adhesives suitable for fixing plastics or fabrics.

According to a preferred embodiment, the channel has a standard width (the distance between two adjacent seams forming the channel) substantially equal to about 25.4mm (1 inch).

In this way, the channels have a standard width for which the machine for sewing or quilting the two textile layers is designed, wherein the heating element is inserted.

Thus, in the case seen above, there are a plurality of sequences S2 in which the channels with or without heating elements alternate, the distance between the two portions of the heating elements being equal to about 50.8mm (2 inches). In contrast, in the case of the third sequence S3 seen above, in which the channels with heating elements inside alternate with two adjacent channels without heating elements inside, the distance between the two portions of the heating elements is about 76.2mm (3 inches).

Drawings

Other features and advantages of the utility model will be more apparent from the following description of preferred but not exclusive embodiments, given by way of non-limiting illustration, with reference to the accompanying drawings, in which:

FIG. 1 is a schematic view of one embodiment of a thermal appliance according to the present utility model, wherein two textile elements engaged with each other can be seen;

FIG. 2 illustrates a cross-section of a portion of a serpentine path of a heating element located inside the thermal appliance of FIG. 1;

FIG. 3 shows details of a typical serpentine path of a heating element located inside a thermal appliance known in the prior art, wherein a seam, a channel formed between two adjacent seams, and a heating element alternately occupying the channel and not exiting an adjacent channel are visible;

FIG. 4 shows a first embodiment of a thermal appliance according to the present utility model;

fig. 5 shows a detail of fig. 4;

FIG. 6 shows a second embodiment of a thermal appliance according to the present utility model;

fig. 7 shows a detail of fig. 6;

fig. 8 shows a third embodiment of a thermal appliance according to the utility model.

Detailed Description

The following detailed description refers to specific embodiments of the thermal implement of the utility model and is not intended to limit the scope thereof.

Fig. 1 depicts a thermal bed warmer 1 of the present utility model for use under a person lying in a bed. The thermal warmer 1 comprises a blanket 2, the blanket 2 being made by joining together two fabric elements 2a and 2b by means of a plurality of seams 3 (fig. 2). A space 4, also referred to herein as a channel, is thus formed between each pair of seams 3, allowing a portion of a heating element 5 having a serpentine path to be inserted into the space 4, the serpentine path being alternately formed by linear portions 6 and connecting loops 7 between two adjacent linear portions 6 (fig. 2).

The heating element 5 consists of a single element, which is managed by a single temperature control device (not shown in the figures).

The distance between the seam 3 and the adjacent seam 3 (width of each channel 4) is a constant standard distance, substantially equal to 25.4mm (1 inch).

In this way, the channels 4 have a standard width, into which the machine for sewing or quilting the two textile layers (2 a, 2 b) is designed, wherein the heating element 5 is inserted.

Fig. 3 shows a detail of a typical serpentine path of a heating element 5 located inside a thermal appliance known in the art, wherein five joints 3a, 3b, 3c, 3d and a sequence S2 of four channels 4a, 4c, 4a 'and 4c' arranged between the joints are visible, such that: a) A portion 6a of the heating element 5 is present in the channel 4a arranged between the seams 3a and 3 b; b) A portion of channel 4c disposed between seams 3b and 3c and adjacent to channel 4a, where there is no heating element 5; c) A portion 6b of the channel 4a' having a heating element 5 disposed between the seams 3c and 3d and adjacent to the channel 4 c; and d) a portion of the channel 4c 'disposed between the seams 3d and 3e and adjacent to the channel 4a' where there is no heating element 5. Thus, there is a repeated alternation of channels (4 a or 4a ') by portions (6 a or 6b, respectively) containing heating elements 5 and adjacent channels (4 c or 4 c') by portions in which no heating elements 5 are contained. In other words, there is always a channel 4c or 4c 'between the two channels 4a and 4a' in which a portion (6 a or 6b, respectively) of the heating element 5 is contained, in which the portion of the heating element 5 is not contained.

In this way, in the prior art device shown in fig. 3, the distance between the two portions 6a and 6b of the heating element 5 is constant and equal to the width of the two channels 4, about 50.8mm (2 inches).

Fig. 4 shows a first embodiment of the warmer according to the present utility model, wherein the blanket 2 is divided for convenience into 3 areas: a first zone Z1 (hereinafter also referred to as "foot zone") adapted to be positioned to correspond to the foot of the user, a second zone Z2 (hereinafter also referred to as "waist zone") adapted to be positioned to correspond to the waist of the user, and a third zone Z3 (hereinafter also referred to as "shoulder zone") adapted to be positioned to correspond to the shoulder of the user.

It can be seen that in the waist region Z2 and the shoulder region Z3 the arrangement of the heating element 5 is constant, such that there is always a channel 4c between the two channels in which the two parts 6a and 6b of the heating element 5 are present, respectively, wherein no part of the heating element 5 is present in the channel 4c (substantially as in the case of the sequence S2 of heating appliances known in the art described in fig. 3).

This ensures that the surface temperature of the blanket at the waist region Z2 and shoulder region Z3 is, for example, 45 ℃.

Conversely, a sequence S1 of channels 4a, 4b, 4c exists in the foot zone Z1 (shown in fig. 4 with reference to blanket 2 of the thermal mattress 1 of the present utility model, and shown in more detail in fig. 5), wherein: a) a first linear portion 6a, b) comprising a heating element 5 inside the channel 4a comprised between the joints 3a and 3b, a second linear portion 6b comprising a heating element 5 inside the channel 4b comprised between the joints 3b and 3c and adjacent to the channel 4a, and c) no portion of the heating element 5 inside the channel 4c arranged between the joints 3c and 3 d.

Thus, in the embodiment of the utility model shown in detail in figures 4 and 5, there are two adjacent channels 4a and 4b in the foot region Z1 of the blanket 2, the channels 4a and 4b containing portions 6a and 6b, respectively, of the heating element 5.

This fact allows a power density of more than about 30% with respect to the prior art appliance shown in fig. 3, wherein there is always a channel 4c between the two channels 4 in which a portion 6 of a heating element 5 is inserted, which channel is free of heating element 5.

Thus, in the embodiment of the utility model shown in detail in fig. 4 and 5, the temperature on the surface of the blanket 2 in the foot region Z1 of the blanket 2 can reach, for example, 53 ℃, which the user prefers especially for the foot region, and which is about 45 ℃ higher than in the waist region Z2 and shoulder region Z3 seen above.

Referring again to the detail shown in fig. 5, a plurality (four total) of sequences S1 of mutually identical channels 4a, 4b, 4c are shown; the channels 4c of each sequence S1 without heating elements act as buffers between a first pair of channels 4a, 4b of a first sequence S1 and a second pair of similar channels 4a, 4b of a second sequence S1, which do not contain the linear portion 6 of the heating element 5 inside. The presence of the channels 4c, which are internally devoid of heating elements, thus makes it possible to avoid overheating conditions due to the presence of an excessive number of adjacent channels 4a, 4b, the adjacent channels 4a, 4b containing the portions 6 of the heating elements 5.

In other embodiments of the utility model (not shown in the figures), the number of sequences S1 of channels 4a, 4b, 4c may be greater or less than four (as shown in the specific example of fig. 5), depending on the needs of the user.

In other embodiments of the utility model (not shown in the figures) the number of channels 4a, 4b in which the linear portion 6 of the heating element 5 is present (two of them in the sequence S1) may be even greater than two, for example three or four.

In other embodiments of the utility model (not shown in the figures) the number of channels 4a, 4b in which the linear portion 6 of the heating element 5 is present may be equal to two in the sequence S1, and greater than two, for example three or four, in the other S1' sequences.

Fig. 6 shows a second embodiment of a thermal appliance according to the utility model, wherein the blanket is here divided for convenience into 3 zones: the Z1 region (foot region), the Z2 region (waist region), and the Z3 region (shoulder region) are divided in a manner similar to that described above with reference to the first embodiment of fig. 4 and 5.

In this second embodiment (shown in detail in fig. 7), there is a sequence S1 of channels 4a, 4b, 4c in foot region Z1 that is identical to that described above with reference to the first embodiment of fig. 4 and 5.

Thus, also in this case, as in the first embodiment seen above, in the foot region Z1, the temperature on the surface of the blanket 2 can be obtained equal to, for example, 53 ℃, which the user particularly prefers for the temperature of the foot region.

However, unlike the first embodiment shown in fig. 4 and 5 and described above, this second embodiment, described with reference to fig. 6 and 7, shows a third sequence S3 of channels 4a, 4c, 4b in the lumbar region Z2, wherein the rectilinear portions 6a and 6b of the heating element 5 are contained in the channels 4a and 4b, respectively, while the interior of the two channels 4c interposed between the channels 4a and 4b do not contain any portion of the heating element (see fig. 7 for details).

Thus, in the second embodiment shown in fig. 6 and 7, there is a pair of channels 4c adjacent to each other in the lumbar region Z2, the channel 4c being interposed between the channel 4a and the channel 4b, whereas in the first embodiment shown in fig. 4 and 5, only one channel 4c is interposed between the channel 4a and the channel 4 b.

Thus, in the second embodiment shown in fig. 6 and 7, the distance between the two linear portions 6a and 6b of the heating element 5 in the lumbar region Z2 is equal to about 76.2mm (3 inches). This ensures that the surface temperature of the blanket in the lumbar region is, for example, 40 ℃.

The shoulder region Z3 of the second embodiment described with reference to fig. 6 and 7 is the same as the shoulder region Z3 of the above-described first embodiment shown in fig. 4 and 5. Thus, in the shoulder zone Z3 of the second embodiment, which is also shown, a surface temperature of the blanket equal to about 45 ℃ can also be reached.

Fig. 8 shows a third embodiment of a heating appliance according to the utility model, wherein the foot area Z1 is identical to the foot area Z1 of the first and second embodiments described above with reference to fig. 5 (and 6 details) and 7, respectively.

Furthermore, in the third embodiment of the thermal implement according to the utility model shown in fig. 8, the channel sequence in the waist region Z2 and the shoulder region Z3 is opposite to the channel sequence shown in the same region of the second form of embodiment shown in fig. 7.

Thus, in the third embodiment of the thermal implement according to the utility model shown in fig. 8, the foot zone Z1 can still reach a temperature of, for example, 53 ℃, while the waist zone Z2 can reach a temperature of, for example, 45 ℃ and the shoulder zone Z3 can reach a temperature of, for example, 40 ℃.

In all the embodiments of the utility model seen above, there is always a sequence S1 of channels 4a, 4b, 4c, wherein inside the channels 4a and 4b adjacent to each other there is a portion 6 of the heating element 5, while in the channel 4c there is no heating element. The two channels 4a and 4b are adjacent to each other, so that a higher temperature can be obtained on the carpet surface at the location of these channels 4a and 4 b.

This makes it possible to obtain a thermal appliance in a simple and economical way while maintaining the same benefits determined by having a single circuit managing a single heating element and having a seam securing the at least two textile elements to each other.

The thermal warmer 1 further comprises a strip of double-sided adhesive tape 8 (fig. 2) arranged so that one of its faces is applied to a portion of the surface of the first textile element 2a of the blanket 2 at the loop 7 of the element heating element 5. Once the protective film of the double-sided adhesive tape 8 has been removed, the other side of the tape 8 will adhere the heating element 5 thereto, thereby fixing the heating element 5 to the textile element 2 a.

Once the heating element 5 is fixed to the textile element 2a by means of the double-sided adhesive tape 8, the two textile elements 3a, 3b are also stitched together at the loop 7. This operation is repeated for all loops 7 present in the coil path of the heating element 5.

In this way, the heating elements 5 are fixed to the rings 7 so as to prevent them from accidentally moving during use by the user and/or during production of the hot-bed warmer 1 itself, avoiding overlapping of portions of the heating elements 5 at one or more of the rings 7, which could lead to overheating and therefore damage to the hot-bed warmer 1 itself and to the user thereof.

Of course, many modifications and variations of the described preferred embodiments will be apparent to those skilled in the art, while remaining within the scope of the utility model.

Accordingly, the utility model is not limited to the described preferred embodiments, which are shown by way of non-limiting example only, but is defined by the appended claims.

Claims (10)

1. A thermal appliance (1) comprising: a) -a blanket (2) consisting of at least two textile elements (2 a, 2 b) fixed to each other; b) -a plurality of seams (3) arranged substantially parallel to each other for securing the at least two textile elements (2 a, 2 b) to each other; c) A plurality of channels (4 a, 4b, 4 c), wherein each of the channels (4 a, 4b, 4 c) occupies a space between two adjacent of the seams (3), and wherein a width of each of the plurality of channels (4 a, 4b, 4 c) is constant; d) A single heating element (5) consisting of a plurality of linear portions (6 a, 6 b) and a plurality of curvilinear elements (7) substantially parallel to each other, wherein each of the plurality of curvilinear elements (7) connects two adjacent ones of the plurality of linear portions (6 a, 6 b), wherein each of the linear portions (6 a, 6 b) of the heating element (5) is adapted to be contained within one of the plurality of channels (4 a, 4b, 4 c),

wherein the thermal appliance (1) comprises at least one first sequence (S1) of the plurality of channels (4 a, 4b, 4 c), the first sequence (S1) consisting of a first channel (4 a), at least one second channel (4 b) and at least one third channel (4 c), wherein the first channel (4 a) has inside it a corresponding first linear portion (6 a) of the heating element (5), while the at least one second channel (4 b) is adjacent to the first channel (4 a) and has inside it a corresponding second linear portion (6 b) of the heating element (5), the at least one third channel (4 c) is adjacent to the at least one second channel (4 b) and has inside it no first linear portion (6 a) and no second linear portion (6 b) of the heating element (5),

-characterized in that the blanket (2) comprises a first zone (Z1), a second zone (Z2) and a third zone (Z3), wherein the first zone (Z1) is adapted to be heated by the single heating element (5) to a temperature different from the temperature of one of the second zone (Z2) and/or the third zone (Z3), and wherein at least one first sequence (S1) of the plurality of channels (4 a, 4b, 4 c) is placed in the first zone (Z1).

2. The thermal appliance (1) according to claim 1, characterized in that the thermal appliance (1) is a thermal blanket or a thermal bed warmer.

3. Thermal appliance (1) according to claim 2, characterized in that it comprises at least two repetitions of said first sequence (S1) of said plurality of channels (4 a, 4b, 4 c).

4. A thermal appliance (1) according to claim 3, characterized in that it comprises at least three repetitions of the first sequence (S1) of the plurality of channels (4 a, 4b, 4 c).

5. The thermal appliance (1) according to claim 1, further comprising at least one second sequence (S2) of the plurality of channels (4 a, 4b, 4 c) in the second zone (Z2) and the third zone (Z3), consisting of the first channel (4 a) and the third channel (4 c), wherein the first channel (4 a) has inside a corresponding first linear portion (6 a) of the heating element (5) and the third channel (4 c) has inside no first linear portion (6 a) and no second linear portion (6 b) of the heating element (5).

6. The thermal appliance (1) according to any one of the preceding claims 1-4, further comprising at least one third sequence (S3) of the plurality of channels (4 a, 4 c) in the second zone (Z2), consisting of the first channel (4 a) and two of the third channels (4 c), wherein the first channel (4 a) has inside a corresponding first linear portion (6 a) of the heating element (5) and two of the third channels (4 c) have inside the first linear portion (6 a) and the second linear portion (6 b) of the heating element (5).

7. The thermal appliance (1) according to any one of the preceding claims 1-4, further comprising at least one third sequence (S3) of the plurality of channels (4 a, 4 c) in the third zone (Z3), consisting of the first channel (4 a) and two of the third channels (4 c), wherein the first channel (4 a) has inside a corresponding first linear portion (6 a) of the heating element (5) and two of the third channels (4 c) have inside the first linear portion (6 a) and the second linear portion (6 b) of the heating element (5).

8. The thermal appliance (1) according to any one of the preceding claims 1-4, further comprising at least one third sequence (S3) of the plurality of channels (4 a, 4 c) in the second zone (Z2) and in the third zone (Z3), consisting of the first channel (4 a) and two of the third channels (4 c), wherein the first channel (4 a) has inside a corresponding first linear portion (6 a) of the heating element (5) and two of the third channels (4 c) has inside the first linear portion (6 a) and the second linear portion (6 b) of the heating element (5).

9. The thermal appliance (1) according to any one of the preceding claims 1-5, further comprising at least one fixing element (8), the at least one fixing element (8) being adapted to allow fixing the heating element (5) to at least one of the textile elements (2 a, 2 b), the at least one of the textile elements (2 a, 2 b) corresponding to the curved element (7) and/or at least one of the first linear portion (6 a) and the second linear portion (6 b) of the heating element (5).

10. Thermal appliance (1) according to claim 9, characterized in that said fixing element (8) is selected from the group consisting of adhesives, double-sided glues, solvent-based glues, hot melt glues, pressure-sensitive adhesives and adhesives suitable for fixing plastics or fabrics.

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