Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Cooling heat exchanger

Inactive Publication Date: 2008-05-08
DENSO CORP
View PDF4 Cites 9 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0007]The present invention is made in view of the foregoing matter, and it is an object of the present invention to provide a cooling heat exchanger capable of improving drainage of condensation.
[0009]Accordingly, condensation in the fin inner spaces is smoothly discharged through the communication channel.
[0011]Accordingly, since the fin inner space is in communication with outside of the first and second heat transfer plates through the first and second apertures, condensation will be discharged from the fin inner space through the first and second apertures. As such, condensation is effectively drained.

Problems solved by technology

As a result, the efficiency of heat transfer reduces.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Cooling heat exchanger
  • Cooling heat exchanger
  • Cooling heat exchanger

Examples

Experimental program
Comparison scheme
Effect test

first embodiment

[0029]Referring to FIGS. 1 to 8, a heat exchanger of the first embodiment is exemplarily employed as an evaporator 10 for a vehicular air conditioner. A general structure of the evaporator 10 can be similar to a heat exchanger described in U.S. Pat. No. 6,047,769 (Japanese Unexamined Patent Publication No. 11-287580). The evaporator 10 generally includes a plurality of heat transfer plates 12.

[0030]In the drawings, arrows A1 denote a general flow direction of air for an air conditioning operation as an external fluid, and arrows B denote a general flow direction of an internal fluid, such as a refrigerant, flowing in internal fluid passages formed in heat transfer plates. The flow direction B of the refrigerant intersects the flow direction A1 of the air. In the illustrated example, the evaporator 10 is constructed as a perpendicularly countercurrent heat exchanger in which the flow direction A1 of the air is substantially perpendicular to the flow direction B of the refrigerant. Al...

second embodiment

[0125]The evaporator 10 according to the second embodiment is similar to the evaporator 10 of the first embodiment except a configuration of the offset wall 17a. In the first embodiment, the offset walls 17a are parallel to the plane of the base portions 13. In the second embodiment, on the other hand, the offset walls 17a are inclined relative to the plane of the base portions 13, with respect to the up and down direction.

[0126]As shown in FIG. 9, each of the offset walls 17a is inclined at a predetermined angle θa relative to the plane of the base portion 13 such that a distance between the offset wall 17a and the plane of the base portion 13 increases toward an upper position. As such, the condensation in the fin 17 of one heat transfer plate 12 is smoothly introduced into the fin 17 of the opposite heat transfer plate 12, as shown by the arrow N. Accordingly, the condensation is further smoothly drained.

third embodiment

[0127]The evaporator 10 according to the third embodiment is similar to the evaporator 10 of the first embodiment except a configuration of the offset wall 17a. In the third embodiment, the offset walls 17a are inclined relative to the plane of the base portions 13, with respect to the air flow direction A1, as shown in FIG. 10.

[0128]For example, each of the offset walls 17a is inclined in the same direction as a downstream side curved wall of the semi-circular-shaped protrusion 14. In other words, the off set wall 17a is inclined toward a downstream position with respect to the air flow direction A1. Specifically, the offset wall 17a forms an angle θb of inclination relative to the plane of the base portion 13 such that a distance between the offset wall 17a and the plane of the base portion 13 increases toward an upstream position with respect to the air flow direction A1.

[0129]In this case, the flow of the air is aligned along the downstream side curved wall of the protrusion 14 ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

A cooling heat exchanger has first and second heat transfer plates joined to each other. Each of the first and second heat transfer plates has protrusions protruding from a base portion thereof for defining internal fluid passages, a fin portion projecting from the base portion in the same direction as the protrusions and defining a fin inner space, and an aperture on the base portion at a position corresponding to the fin portion. The fin portion includes an offset wall that is offset from the base portion and connected to the base portion at two positions. The aperture of the first heat transfer plate is displaced from the aperture of the second heat transfer plate with respect to a longitudinal direction of the protrusions so that a communication channel that allows communication between the fin inner spaces of the first and second heat transfer plates is provided for draining condensation.

Description

CROSS REFERENCE TO RELATED APPLICATION[0001]This application is based on Japanese Patent Application No. 2006-298691 filed on Nov. 2, 2006, the disclosure of which is incorporated herein by reference.FIELD OF THE INVENTION[0002]The present invention relates to a cooling heat exchanger having heat transfer plates on which fin portions are integrally formed.BACKGROUND OF THE INVENTION[0003]For example, Unexamined Japanese Patent Publication No. 2002-147983 describes a plate-type cooling heat exchanger, such as an evaporator, which is constructed of heat transfer plates without using separate fin members. The heat transfer plates include base portions, which are generally flat, and protrusions protruding from the base portions for defining internal fluid passages therein through which an internal fluid, such as a refrigerant, flows. The protrusions are formed by pressing, such as projecting. The heat transfer plates further have slit fins on the base portions and between the protrusion...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): F28D1/03
CPCF25B39/00F25B2309/061F28F17/005F28D1/0417F28F3/04F28D1/0333
Inventor KATOH, YOSHIKIASANO, TAICHI
Owner DENSO CORP
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com