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

Heat exchanger unit

A technology of heat exchangers and heat exchange elements, which is applied in heating methods, household heating, household heating, etc., can solve the problem that the heat exchange elements cannot be completely prevented from freezing.

Inactive Publication Date: 2004-03-24
DAIKIN IND LTD
View PDF0 Cites 11 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For such an environment, as in the past, if only a certain amount of intermittent operation is performed when the temperature drops to the specified temperature, it may not be possible to completely prevent the heat exchange element from freezing.

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
  • Heat exchanger unit
  • Heat exchanger unit
  • Heat exchanger unit

Examples

Experimental program
Comparison scheme
Effect test

no. 1 example

[0038] The heat exchanger assembly 5 of the first embodiment of the present invention can be linked with an air conditioner 20 such as an air conditioner, or can also operate independently, and it is provided for ventilation of various facilities such as buildings. Such as figure 1 As shown, the heat exchanger assembly 5 of this embodiment is installed inside the ceiling of the indoor space SI as the object of ventilation in the building, and the indoor space SI is connected with the external space SO of the building by a pipe 31 . This heat exchanger assembly 5 performs heat exchange between the return air RA discharged from the indoor space SI and the outside air OA by means of the heat exchange element 11 when performing heat exchange and ventilation, and discharges the return air RA to the external space. SO goes (exhaust EA), and the outside air OA after heat exchange is sent into the indoor SI as supply air SA. In addition, the heat exchanger assembly 5 can also be used...

no. 2 example

[0071] In the above-mentioned first embodiment, there is a large difference in the degree of preventing the heat exchange element 11 from freezing by performing the first operation of the first anti-icing control and the second operation of the second anti-icing control. Yes, in the first operation, only the air supply fan 12 is temporarily stopped, and in the second operation, both the air supply fan 12 and the exhaust fan 13 are both temporarily stopped.

[0072] However, due to the difference between the cold resistance performance of the heat exchange element 11 and the capability of the air conditioner 20 for heating the indoor space SI, it is conceivable that the above enhanced second operation may not be necessary. In this case, the first anti-icing control and the second anti-icing control may be set in the following manner.

[0073] In the second embodiment, during the first anti-icing control and the second anti-icing control, only the air supply fan 12 is temporaril...

no. 3 example

[0075] In the first embodiment described above, whether to start or end the first anti-icing control and the second anti-icing control is determined based only on the temperature detected by the temperature sensor 51 which detects the outside air temperature. However, it is also possible to add the temperature detected by the temperature sensor 52 for detecting the indoor temperature as a condition for such judgment. In this case, it is possible to more accurately estimate the possibility of freezing of the heat exchange element 11, and it is possible to more appropriately determine the start and end times of the first anti-icing control and the second anti-icing control.

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

The present invention provides a heat exchanger unit (5) that can appropriately inhibit freezing of a heat exchange element (11), even in cold-climate regions. The heat exchanger unit (5) performs heat exchange and ventilation between an indoor space (SI) and an outdoor space (SO), and is therefore provided with a heat exchange element (11), a supply air passage that is routed via the heat exchange element (11), an exhaust air passage that is routed via the heat exchange element (11), a temperature sensor (51), and a control unit. The temperature sensor (51) detects the outside air temperature. The control unit executes a first freeze inhibit control mode and a second freeze inhibit control mode. The first freeze inhibit control mode inhibits freezing of the heat exchange element (11) if the outside air temperature falls below a first level. The second freeze inhibit control mode, which inhibits freezing more strongly than the first freeze inhibit control mode, inhibits freezing of the heat exchange element (11) if the outside air temperature falls below a second level (which is lower than the first level).

Description

technical field [0001] The invention relates to a heat exchanger, in particular to a heat exchanger assembly arranged between an indoor space and an external space and facing a cold area for heat exchange and air exchange. Background technique [0002] In recent years, indoor ventilation methods for heating and cooling the air in the room are generally used between the air supplied to the room (outside air) and the air discharged from the room (exhaust, return air). A method of heat exchange to reduce the operating load of air conditioners for heating and cooling. [0003] Heat exchanger modules are known as ventilators for performing such heat exchange. The heat exchanger assembly is set to ventilate the building or various buildings, and it is either linked with an air conditioner or operated independently. Such as figure 1 As shown, this heat exchanger assembly is arranged inside the ceiling of the indoor space SI for ventilation. figure 1 The heat exchanger assembly ...

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
Patent Type & Authority Applications(China)
IPC IPC(8): F24F7/007F24F7/08F24F11/02F24F11/76F24F12/00
CPCY02B30/16F24F2011/0006F24F2011/0087F24F12/006F24F2011/0013Y02B30/563F24F2012/007F24F2110/12F24F11/41F24F2110/10Y02B30/56
Inventor 藤本彻
Owner DAIKIN IND LTD
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