| Fitting for connection of a heat exchanger -> Monitor Keywords |
|
|
 
Fitting for connection of a heat exchangerRelated Patent Categories: Liquid Heaters And Vaporizers, Stand Boiler (e.g., Water Heater, Etc.), Fluid Fuel Burner, Having Heat Exchange FeatureFitting for connection of a heat exchanger description/claimsThe Patent Description & Claims data below is from USPTO Patent Application 20070079772, Fitting for connection of a heat exchanger. Brief Patent Description - Full Patent Description - Patent Application Claims
CROSS-REFERENCE TO RELATED APPLICATIONS [0001] This application claims priority to Norwegian Patent Application Serial Number 2005 4444, filed Sep. 26, 2005. BACKGROUND OF THE INVENTION [0002] The present invention relates to a device for a fitting for connection of one or more heat exchangers to a hot water container of the pressure tank type according to the preamble of claim 1. [0003] From US 2005/0067154 it is known a water heater with a heat exchanger in the form of a pipe coil. This document describes the fastening of the tube coil and fitting for external connection of the pipe coil. [0004] Also from US 2005/0139173 it is known a water heater with a pipe heat exchanger. [0005] In some hot water containers of the pressure tank type, heat exchangers are used for heating the water in the tank. Use of heat exchangers in this connection has been steadily more relevant because of an increased use of heat pumps that produce heat in the form of a heated liquid. To use this technique for heating water, the heated liquid is led through a heat exchanger that is placed in a hot water container. The heat exchanger itself is often in the form of a pipe coil/spiral that is placed in the hot water container, and where the connection for circulation of the heating liquid through the heat exchanger is led through the wall of the hot water container. [0006] Most of the known heat exchangers in hot water containers have normally sturdy pipe stubs that are welded to the heat exchanger and which again are welded to the top/bottom or sides of the container. As these connections shall be made by welding, the pipe in the heat exchanger must have a material thickness of least 1 mm. Because of the steadily increasing prices of the materials that heat exchangers are made from, normally stainless steel, it will be desirable to be able to reduce the cost of the materials, preferably by reducing the material thickness of the heat exchanger with, for example, 10-20%. To be able to retain the quality and life expectancy of the heat exchanger, welding must therefore be avoided in the manufacture of the necessary connections. [0007] A corresponding increase in the cost of the materials is also the case for the hot water container itself, and here it will also be desirable to be able to reduce the cost of materials by reducing the material thickness. This will also mean that welding of the pipe stubs must be avoided. [0008] Therefore, the aim of the present invention is to provide a device for a fitting for connection to one or more heat exchangers to a hot water container of the pressure tank type, where one does not have to use welding of the pipe ends of the heat exchanger to fasten these to the water heater. [0009] This is achieved with a device for a device for a fitting for connection of one or more heat exchangers to a hot water container of the pressure tank type that is characterised in that it encompasses: [0010] A connection in the form of a cylindrical pipe with a first end and a second end, said first end is arranged to be fastened to the wall, bottom or top of the hot water container, and the other end is arranged to be connected with further pipe parts, valves etc., said connection is fitted with a section incorporating at least two sections fitted with grooves and equipped with O-rings, where the inner diameter of the connection is larger or equal to the outer diameter of the heat exchanger pipe, and also an inner pipe-formed sleeve, the inner diameter of which is smaller than or equal to the inner diameter of the heat exchanger pipe, as the connection is connected to the wall, top or bottom of the water heater, and one end of the heat exchanger pipe is led through a through hole in the wall, top or bottom of the water heater and a distance into the connection past said section, that the sleeve is led into the one end of the heat exchanger pipe that lies inside the connection, and that said section is squeezed together to a smaller diameter with the object of providing a leak-proof connection between the pipe of the heat exchanger, the connection and the inner sleeve. [0011] With regard to a preferred embodiment of the invention, the first end of the connection is equipped with a threaded section for connection to a complimentary formed threaded section on the wall, top or bottom of the water heater. [0012] With regard to a second preferred embodiment, the first end of the connection is fastened to the wall, top or bottom of the water heater with the help of welding. [0013] With regard to yet another preferred embodiment, the other end of the connection protrudes out from the wall, top or bottom of the hot water container. [0014] The other end of the connection is preferably formed with a connecting body for joining of the connection to other pipe parts. [0015] With respect to a special embodiment the other end of the connection with the section protrudes into the hot water container and its first end is provided with a section with an enlarged diameter to lie against the inside of the wall, top or bottom of the hot water container and that this section is fitted with a sealing body in the form of an O-ring, and that a part of the first end protrudes out of the hot water containers and is fitted with a threaded section to cooperate with a complimentary formed locking nut, as the locking nut and/or the part of the connection that protrudes out is fitted with a groove for an O-ring. This embodiment is especially suitable in the cases where it is important to reduce the dimensions of the parts that protrude out of the hot water container. BRIEF DESCRIPTION OF THE DRAWINGS [0016] The invention will now be explained in more detail with the help of embodiment examples with reference to the enclosed figures, in which: [0017] FIG. 1 is a principle drawing that shows an example of a typical, previously known, heat exchanger for placing in a water heater. [0018] FIG. 2 shows a section through a first embodiment of a fitting with regard to the invention for screw fitting to a water heater. [0019] FIG. 3 shows a section through a fitting with regard to the invention for permanent welding to the hot water container. [0020] FIG. 4 shows a section of an embodiment of the invention where the fitting itself is fitted inside the water heater. DETAILED DESCRIPTION Continue reading about Fitting for connection of a heat exchanger... Full patent description for Fitting for connection of a heat exchanger Brief Patent Description - Full Patent Description - Patent Application Claims Click on the above for other options relating to this Fitting for connection of a heat exchanger patent application. ###  How KEYWORD MONITOR works... a FREE service from FreshPatents1. Sign up (takes 30 seconds). 2. Fill in the keywords to be monitored. 3. Each week you receive an email with patent applications related to your keywords. Start now! - Receive info on patent apps like Fitting for connection of a heat exchanger or other areas of interest. ### Previous Patent Application: Water heater with air intake and exhaust system Next Patent Application: Circulating fluidized bed reactor with a convertible combustion method Industry Class: Liquid heaters and vaporizers ### FreshPatents.com Support Thank you for viewing the Fitting for connection of a heat exchanger patent info. IP-related news and info Results in 0.80963 seconds Other interesting Feshpatents.com categories: Medical: Surgery , Surgery(2) , Surgery(3) , Drug , Drug(2) , Prosthesis , Dentistry 174 |
 * Protect your Inventions * US Patent Office filing 
PATENT INFO |
|
