UA120815C2 - RADIATOR ON LIQUID HEAT CARRIER WITH UNIFORM HEAT DISTRIBUTION ON THE FRONT SIDE - Google Patents

Abstract

The invention relates to a radiator (1) with a coolant comprising a first pipe (2), a second pipe (3) and a front assembly comprising hollow plates (4) connected to pipes (2, 3). The radiator (1) also comprises distribution pipes (5) located behind the front assembly, which are connected to the possibility of passage of liquid with the first pipe (2) and at least one plate (4), at least in one place where the specified at least one place is in the area of at least one plate (4), which is located near the second pipe (3), which allows the coolant in the process to get into the distribution pipes (5) from the first pipe (2), flow along the distribution pipes (5), then get at least in one plate (4) and run along at least one plate (4) to re-enter the first pipe (2).

Description

The invention belongs to the field of radiators with a coolant, more precisely to a radiator with a coolant with uniform heat distribution on the front side.

Radiators with a coolant usually consist of a first pipeline, a second pipeline that is parallel to the first pipeline, and several hollow plates connected with the possibility of the passage of liquid through holes with the first and second pipelines and, as a rule, located perpendicular to them. In particular, the plates located in front of the pipes and form the front side of the radiator.

This type of radiator is now used in a closed loop configuration, with heating means such as electric resistance heating means provided in the first pipeline, and pipelines not connected to an external heat source. Therefore, these are electric radiators. During operation, the radiator heats the liquid in the first pipeline, which, due to the thermosyphon phenomenon, sets the liquid in motion and causes it to circulate in the plates and pipes, where the liquid loses heat and gives it to the environment.

The disadvantage of such electric radiators is their inability to ensure uniform distribution of heat in the environment. In fact, with this configuration, the fluid is hot in the first conduit and the corresponding end of the plates and cold in the other end of the plates and in the second conduit, and therefore it is clear that the heat distribution is efficient in the first part of the face and negligible in the other part of the face.

This creates a strong heat gradient that can be uncomfortable for the user and in certain cases will cause the radiator to consume more electrical energy to, for example, reach a target temperature that the user actually feels.

In the most unfavorable cases, this target temperature may not be reached at all, because there is a maximum temperature value on the surface of the plates, at which there are no risks of burns to the user touching the plates. For example, the maximum surface temperature threshold at any point of the plates cannot exceed 85 "С.

Considering the above, this can lead to an increase in the surface area of the front side, as well as the plates, and thus increase the size of the radiators.

Therefore, there is a need for an electric radiator with a coolant that provides better uniformity of the temperature of the front side.

The applicant company proposes to solve this problem by using additional pipes connected to at least the bottom pipe and to at least one plate, directly or indirectly, to change, compared to the prior art, the way in which the liquid coolant flows directly into the pipes , and then into the plates, and not immediately into the plates.

In fact, the applicant company unexpectedly discovered that it is possible to make the temperature distribution of the facade surface more uniform, in other words, to reduce the thermal gradient, by improving the circulation of the coolant in the plates, and also by changing the fact that this circulation was hindered by the speed of the flow when passing between the first pipe and each plate , which is limited due to the small diameter of the holes that ensure the connection of the plates with the first pipe.

Additional pipes make it possible to avoid this limitation of the flow rate between the pipe and at least one plate and introduce the hot coolant into the final section of the plates, located opposite the one where the heating devices are present. The additional tubes also provide an additional surface in contact with the environment, which allows for increased heat transfer by convection, which contributes to the greater efficiency of the heatsink according to the present invention.

It has also been found to provide a fluid circulation that is much better than the prior art, to the extent that we get face-to-face temperature uniformity. This allows, for example, to have a more compact device with the same performance at temperature and electrical power, or better heating at a certain electrical power.

The applicant company also discovered that according to this invention the improvement is not limited to closed-cycle electric radiators, but can be applied to open-cycle radiators included in the central heating system.

Thus, the present invention relates to a radiator with a coolant containing a first pipeline, a second pipeline and a front assembly forming the front part of the radiator, while the front assembly contains several hollow plates that are fluidly connected to the first and second pipelines , while the radiator is characterized by the fact that it additionally contains several distribution pipes, which are located behind the front assembly and are connected with the possibility of the passage of liquid, on the one hand, to the first pipeline, and on the other hand, to at least one plate of the front assembly at least in at one place in the upper part 60 of at least one plate, and this connection is in the part of at least one plate that is near the second pipe to allow the liquid coolant during operation to enter the distribution pipes from the first pipe and flow along the distribution pipes, then fall into at least one plate and pass along at least one plate before again get into the first pipe.

Preferably, each distribution pipe is connected by fluid passage to the first conduit through the first passage, and the plates are fluidly connected to the first conduit each through a second passage, and the cross section of the first passage and the internal cross section of at least one distribution pipe are or is larger than the cross-section of the second pass. Provided that at least the internal cross-section of the distribution pipes is greater than that of the second pass, it is possible to limit the number of distribution pipes required to obtain a sufficient uniformity of heat distribution on the face.

It is better when the radiator contains for each plate at least one distribution pipe located behind this plate.

It is even better when the radiator contains for each plate two distribution pipes, each of which is located behind one of the two longitudinal edge regions of the plate.

It is better when each distribution pipe and the plate behind which it is located are at a certain distance. Providing such a distance makes it possible to additionally increase the heat exchange by convection between the distribution pipes and the environment.

The distribution pipes can be connected with the possibility of passing liquid directly to at least one plate, so that the distribution pipes are directed to at least one plate. However, in a particular preferred configuration of the radiator according to 3 of the present invention, the manifolds are fluid-passable with at least one plate through the second conduit, and thus the manifolds are directed into the second conduit.

Pipes can be horizontal, and plates - vertical. Of course, you can make vertical pipes and horizontal plates.

Each fluid permeable junction between the two first and second conduits, plates and each manifold is formed by an opening in the first of these two elements and an opening in the second of these two elements, such openings being flush with each other.

Plates can be connected to distribution pipes by welding or soldering.

The first and second pipelines can be closed at their ends so that the radiator will work in a closed loop in the first pipeline electric heating means are provided, thus the radiator is an electric radiator.

However, as stated above, the technical solution according to the present invention is not limited to a closed-loop electric radiator. On the contrary, it can be applied to radiators of the open cycle, which are part of the central heating system. Thus, alternatively, the first pipeline can be open at one end, which is made with the possibility of connecting a hose for the supply of hot liquid coolant, and the second pipeline can be open at one end, which is made with the possibility of connecting an outlet hose for the exit of liquid coolant, thus the radiator will work in open cycle.

In order to better illustrate the subject matter of this invention, below, by way of example, and not by way of limitation to a particular embodiment, the corresponding drawings will be provided.

In these drawings:

Fig. 1 is a schematic perspective view of the front part of the radiator according to one embodiment of the present invention;

Fig. 2 and C are schematic rear and front views of the radiator shown in Fig. 1;

Fig. 4 - a schematic view in a horizontal section through the outlet pipeline for the exit of the heat carrier along the IM-IM cross-section plane;

Fig. 5 - a schematic view in a vertical section along the cross-sectional plane М-М passing through the axis of the distribution pipe; and

Fig. 6 is a schematic view of the upper part shown in the circle in FIG. 5.

It should be emphasized here that the radiator, according to a specific embodiment of the present invention, is schematically shown in the figures to illustrate the principle underlying the present invention.

If we first consider Fig. 1 and 2, it can be seen that the electric radiator with a heat carrier 1, hereinafter referred to as the radiator 1 for brevity, usually contains in the lower part - the lower pipe 2 and in the upper part - the upper pipe 3, connected with the possibility of passing liquid from several vertical hollow plates 4 forming the front part of the radiator 1.

Since the radiator 1 is in a closed loop, heating means (not shown) are provided in the lower pipe 2 to heat the liquid and thereby its movement in the radiator 1. Therefore, the lower pipe 2 and the upper pipe C are the above-mentioned first and second pipes, in accordance.

More specifically, as it is more clearly seen in Fig. 5 and b, the lower pipe 2 and the upper pipe C contain a number of pairs of the first cylindrical radial holes 21, 31, the axes of which are located horizontally and parallel to each other, these first holes 21, 31 extend to the entire front side of the radiator 1.

The same number of first holes 21, 31, namely twelve, is provided in the example shown in the figures on the lower pipe 2 and each first hole 21 of the lower pipe 2 corresponds to the first hole 31 of the upper pipe 3, which is vertically aligned with the indicated first hole 21 .

Each plate 4, as a rule, is made in the form of a flat tubular element, having a rectangular or oblong cross-section, as in the example shown in the figures, and thus contains a front wall 41 directed into the room to be heated, and a back wall 42, located opposite the front wall 41 and opposite the lower tube 2 and the upper tube 3. The rear wall 42 contains a pair of first holes 43 in each of the two longitudinal end regions of each plate 4, they are placed in such a way that the pair of first holes 43 are aligned with the pair of the first holes 21 of the lower pipe 2, and the other is aligned with a pair of corresponding first holes 31 of the upper pipe 3. In the example shown in the figures, there are six plates 4.

The radiator 1 differs in that it contains additional pipes 5, which in the given example are referred to as distribution pipes, two for each plate 4.

The distribution pipes 5 can be simple flat pipes, as shown schematically in the figures, containing a first opening 51 at each of their two longitudinal ends.

In addition, each lower pipe 2 and upper pipe C contain a number of pairs of second cylindrical radial holes 22, 32, the axes of which are located vertically and parallel to each other, and the second holes 22 of the lower pipe 2 are open upwards, and the second holes 32 of the upper pipe C are open down

The same number of pairs of second holes 22, 32 as pairs of first holes 21, 31 are located, and each second hole 22, 32 is located in such a way that its axis is located on a vertical plane that passes through the axis of the first hole 21, 31, respectively . In other words, for each of the lower pipes 2 and the upper pipes C, pairs (in this case twelve) of the first hole 21, 31 and the second hole 22, 32 are provided, perpendicular to each other.

Each distribution pipe 5 is located vertically between the lower pipe 2 and the upper pipe C and is placed so that the first hole 51 in the lower part is aligned with the first hole 21 of the lower pipe 2 and that the first hole 51 in the upper part is aligned with the first corresponding hole 31 of the upper pipes 3. In other words, behind each plate 4 there are two distribution pipes 5. In particular, the distance between the various openings is such that each distribution pipe 5 passes, in this case vertically, along the corresponding area of the longitudinal edge of the corresponding plate 4.

Summarizing what has been said, thus, each distribution tube 5 is connected with the possibility of liquid passage with the lower pipe 2 below and with the upper pipe C above.

It should be noted that in the given example, the cross-sections of the first holes 51 and the second holes 22, 32 are the same and equal to the cross-sections of the first holes 21, 31 and 43, but the internal cross-section of the distribution pipes is larger.

Therefore, during operation, the liquid coolant, heated in the lower pipe 2, quickly enters the distribution pipes 5, through the second holes 22 and the first holes 51 of the pipes, in which it rises to the upper pipe 3, passing through the first holes 51 and the second holes 32, then the still hot liquid, despite the fact that it gave off heat by convection as it rose in the manifolds 5, will enter each of the plates 4 passing through each of the first holes 31, 43 and will descend into the plates 4, giving off heat through the front side to enter the lower pipe 2 through the first holes 43, 21, where it will be heated again by the heating means and thus re-enter the distribution pipes 5 and perform the cycle described above again.

All the holes described above can be made by any suitable means, for example by drilling, and the various elements (tubes 2, 3, plates 4 and tubes 5) can be connected in a conventional way, in particular by welding, for example as described in the French patent application EC 2 925 374, in such a way as to ensure the sealing of the fluid passage for communication between the elements.

It should be noted that the above embodiment of the present invention has been shown by way of example and not limitation, and that modifications may be made without departing from the scope (516) of the present invention.

Thus, the radiator described above can be part of a central heating system, in which case heating means will not be provided, and one end of the upper pipe C will be connected to the inlet pipe of the hot coolant and one end of the lower pipe 2, on the other side of the radiator 1, will be connected to the outlet pipe for the cold liquid in a well known manner.

In this configuration, the upper pipe C and the lower pipe 2 correspond to the first and second pipes mentioned above.

Claims (10)

FORMULA OF THE INVENTION 1. A radiator (1) on a liquid coolant, including a first pipe (2), a second pipe (3) and a front assembly forming the front side of the radiator (1), while the front assembly contains hollow plates (4), which fluidly connected to the first pipe (2) and the second pipe (3), which is characterized by the fact that it additionally contains distribution pipes (5), which are located behind the front assembly and are fluidly connected on one side to the first pipe (2) and, on the other hand, with at least one plate (4) of the face assembly in at least one place of at least one plate (4), and this one place is located in a part of at least one plate (4) that is located near the second pipe ( 3), which allows the coolant during operation to enter the distribution pipes (5) from the first pipe (2), flow along the distribution pipes (5), then enter at least one plate (4) and pass along at least one plate (4), to get back into the first pipe (2). 2. The radiator (1) according to claim 1, characterized in that each distribution pipe (5) is connected with the possibility of the passage of liquid to the first pipe (2) through the first passage, and the plates (4) are connected with the possibility of the passage of liquid with the first pipe (2) through the second passage, the cross-section of the first passage and the internal cross-section of the distribution pipes (5) are equal to or greater than the cross-section of the second passage. C. The radiator (1) according to claim 2, which is characterized in that it contains for each plate (4) at least one distribution pipe (5) located behind the plate (4). 4. The radiator (1) according to claim 3, which is characterized by the fact that it contains for each plate (4) two distribution pipes (5), each of which is located on the corresponding one of the two longitudinal Zo edge regions of the plate (4). 5. Radiator (1) according to one of paragraphs With ii 4, which differs in that there is a certain distance between each distribution tube (5) and the plate (4) behind which it is located. 6. The radiator (1) according to one of claims 1-5, which is characterized in that the distribution pipes (5) are connected with the possibility of passing liquid with at least one plate (4) through the second pipe (3) and therefore the distribution pipes (5) ) open into the second pipe (3). 7. The radiator (1) according to one of claims 1-6, which differs in that the pipes (2, 3) are horizontal, and the plates (4) are vertical. 8. The radiator (1) according to one of claims 1-7, which is characterized by the fact that the plates (4) are connected to the distribution pipes (5) by welding or soldering. 9. Radiator (1) according to one of claims 1-8, which is characterized by the fact that the first and second pipes (2, 3) are closed at their ends, so that the radiator (1) is in a closed loop, in the first pipe (2) electric heating means are provided and therefore the radiator (1) is an electric radiator. 10. 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