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Patent Searching and Data


Title:
HEAT PIPE MODULE FOR HEAT TRANSFER TO HEATING SYSTEMS
Document Type and Number:
WIPO Patent Application WO/2010/016781
Kind Code:
A3
Abstract:
A Heat pipe unit for heat transfer into heating systems, especially for heat exchangers inside the buildings, is composed of outer tube (3), coaxial inner tube (1) for filling with heat transferring medium, and heating loop-shaped tube (6) attached to outer tube (3) and connected to the space between coaxial tubes (3) and (1), helical hollow (2) is provided on the inner tube (1) of the helix pitch equal to the distance between inlet (7) and outlet (8) of the loop-shaped tube (6) attached to the outer tube (3).

Inventors:
KANDEFER STANISLAW (PL)
DZIEDZIC BOGUSLAW (PL)
Application Number:
PCT/PL2009/000078
Publication Date:
April 29, 2010
Filing Date:
August 03, 2009
Export Citation:
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Assignee:
ENEREKO SP Z O O (PL)
KANDEFER STANISLAW (PL)
DZIEDZIC BOGUSLAW (PL)
International Classes:
F28D15/02
Foreign References:
JP2003065552A2003-03-05
FR1566477A1969-05-09
JP2004278854A2004-10-07
DE3320956A11984-12-13
JPS56127191A1981-10-05
Attorney, Agent or Firm:
OSTRZYCHOWSKI, Tadeusz (ul. Strazacka 38 F, Rzeszow, PL)
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Claims:

Claims

What is claimed is:

1. The heat pipe unit for heat transfer into heating systems composed of outer tube, coaxial inner tube filled with heating medium, and heating loop connected to the space between two coaxial tubes, characteristic that on the wall of inner tube (I) there is a helical hollow (2) with helix pitch S equal to the distance between inlet (7) and outlet (8) of loop tubes (6) connected to outer tube (3).

2. The heat pipe unit mentioned in claim 1 is characteristic that the deep of hollow (2) is equal to the 5% to 45% of the diameter of inner tube (!).

Description:

Heat pipe module for heat transfer to heating systems

The matter of invention is the heat pipe module for heat transfer into heating systems, especially for heat exchangers inside the buildings (space).

Common heat transfer systems are based on the exchange of heat through the moving medium, which is transferred from one to another heat exchanger. In the end heat exchanger, the heat is transferred from the medium into the end heat exchanger and finally from end heat exchanger into the space being heated. The crucial criterion of the system is its efficiency, regarding the dynamics and heat stream being carried by heating medium, which itself is usually the liquid circulating inside the central heating system. Recent solution take into account not only the thermal efficiency of the systems used in social space (flats, houses, and/or offices) but also the aesthetics of such systems, especially by avoiding the outer-wall hanging heat exchangers and replacing them by inside-wall heat exchangers.

The systems following such requirements are for example the heat pipe units described as applications of utility designs PL 110 481 (Ul) and PL 110 482 (Ul), which presents the solution of versatile configuration of heat exchangers. According to those solutions the heat pipe unit consists of two coaxial tubes; the inner one filled with heating medium, while the outer tube is equipped with two reducing connections and attached to two loop heating tubes (in application of utility design no PL 110 481 (Ul)) or one loop heating tubes (in application of utility design no PL 110482 (Ul)) located outside the outer tube.

Described designs follow the contemporary requirements expected for social spaces, considering the aesthetic needs and the large area heating walls emitting the heat inside the room space. Such designs have the disadvantage, namely the noise produced by turbulent flow of heating medium (boiling or overheated). The disadvantage of these

systems can be cancelled by improvement of heat transfer efficiency making the systems friendly for the users, i.e. inhabitants of social spaces.

The nature of invention of heat pipe unit for heat transfer into heating systems are two coaxial tubes; the outer tube connected to loop-shaped tubes, called further loops, and the helical inner tube filled with heat transferring medium with the pitch of helix equal to the distance between inlet and outlet of the loops. It is also advantageous that the deep of helical hollow is equal to 5 to 45% of the diameter of inner tube. The helical hollow inside the inner tube resulted in avoiding the rapid boiling of heating medium inside the inner tube and thus avoiding the noise produced otherwise during the work of the heat pipe unit. The use of helix-shaped hollow resulted in more laminar flow of heating medium and the improvement of heat transfer efficiency.

The construction of heat pipe unit is exemplified at Figures 1 and 2, where Figure 1 shows the inner helical tube with hollow together with its partial cross-section, while Figure 2 shows the general view of heat pipe unit together with its partial cross- section. In particular the inner tube i of the length L and inner diameter D is equipped with the helical hollow 2 of the pitch J5. The deep of hollow is equal to 40% of D. The inner tube l_ is located coaxially inside the outer tube 3. Free space 4 between inner tube 1 and outer tube 3_ is end-up with reducing connections 5_. The space 4 is connected to two loop-shaped tubes 6, the inlets and outlets 7 and 8_ of which are located over hollow 2. Additionally, the tube 9 is connected to outer tube 3 to form the space composed of 4, 6, and 9 in order to use 9 for evacuation during assembling the unit.