CA2626064A1 - Airflow management system in a hvac unit including two fans of different diameters - Google Patents

Airflow management system in a hvac unit including two fans of different diameters Download PDF

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Publication number
CA2626064A1
CA2626064A1 CA002626064A CA2626064A CA2626064A1 CA 2626064 A1 CA2626064 A1 CA 2626064A1 CA 002626064 A CA002626064 A CA 002626064A CA 2626064 A CA2626064 A CA 2626064A CA 2626064 A1 CA2626064 A1 CA 2626064A1
Authority
CA
Canada
Prior art keywords
airflow
fan
heat exchanger
recited
management system
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CA002626064A
Other languages
French (fr)
Other versions
CA2626064C (en
Inventor
Brian D. Videto
Michael J. Froehlich
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Carrier Corp
Original Assignee
Carrier Corporation
Brian D. Videto
Michael J. Froehlich
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Carrier Corporation, Brian D. Videto, Michael J. Froehlich filed Critical Carrier Corporation
Publication of CA2626064A1 publication Critical patent/CA2626064A1/en
Application granted granted Critical
Publication of CA2626064C publication Critical patent/CA2626064C/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D15/00—Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls ; Heat-exchange apparatus employing intermediate heat-transfer medium or bodies
    • F28D15/02—Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls ; Heat-exchange apparatus employing intermediate heat-transfer medium or bodies in which the medium condenses and evaporates, e.g. heat pipes

Landscapes

  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Air Conditioning Control Device (AREA)
  • Air-Conditioning Room Units, And Self-Contained Units In General (AREA)
  • Air Filters, Heat-Exchange Apparatuses, And Housings Of Air-Conditioning Units (AREA)

Abstract

Air is heated by a gas or electric heat exchanger or cooled in an evaporator coil. The air is discharged through a discharge opening to heat or cool an area. Two fans draw an exterior air stream over the gas or electric heat exchanger or the evaporator coil. A first fan has a diameter greater than a diameter of a second fan. When in a side discharge configuration, the second fan is located between the first fan and the side discharge opening. The first fan has a larger diameter to produce a stronger airflow to overcome the airflow produced by the second fan, better distributing the airflow from the first fan. The airflow generated by the second fan is directed to the discharge opening relatively unimpeded.

Claims (20)

1. A heat exchanger comprising:
a heat exchanger coil;
a first fan to produce a first airflow that exchanges heat with a medium in the heat exchanger coil; and a second fan to produce a second airflow that exchanges heat with the medium in the heat exchanger coil, wherein the first airflow is stronger than the second airflow, and the first airflow and the second airflow flow through a common discharge.
2. The heat exchanger as recited in claim 1 wherein the first fan has a first diameter and the second fan has a second diameter, and the first diameter is greater than the second diameter.
3. The heat exchanger as recited in claim 1 wherein the first fan operates at a first fan speed and the second fan operates at a second fan speed, and the first fan speed is greater than the second fan speed.
4. The heat exchanger as recited in claim 1 wherein the first airflow and the second airflow exit through the common discharge, and the first airflow and the second airflow are directed along a substantially straight path from the first fan and the second fan, respectively, to the common discharge.
5. The heat exchanger as recited in claim 1 wherein the first airflow and the second airflow exit through the common discharge and the second fan is located between the first fan and the common discharge.
6. The heat exchanger as recited in claim 1 wherein the first fan and the second fan operate in parallel.
7. The heat exchanger as recited in claim 1 wherein the heat exchanger coil is an evaporator coil, and the first fan and the second fan draw the first airflow and the second airflow, respectively, over the evaporator coil.
8. The heat exchanger as recited in claim 1 wherein the heat exchanger is a gas or electric heat exchanger, and the first fan and the second fan blow the first airflow and the second airflow, respectively, over the gas or electric heat exchanger.
9. An airflow management system comprising:
a vapor compression system including an evaporator coil, wherein refrigerant flows through the evaporator coil;
a heating heat exchanger that produces a heated medium; and an air moving section including:
a first fan to produce a first airflow that exchanges heat with the refrigerant in the evaporator coil when the airflow management system is operating in a cooling mode and that exchanges heat with the heated medium in the heating heat exchanger when the airflow management system is operating in a heating mode, and a second fan to produce a second airflow that exchanges heat with the refrigerant in the evaporator coil when the airflow management system is operating in the cooling mode and that exchanges heat with the heated medium in the heating heat exchanger when the airflow management system is operating in the heating mode, wherein the first airflow is stronger than the second airflow, and the first airflow and the second airflow flow through a common discharge.
10. The system as recited in claim 9 wherein the vapor compression system includes:
a compressor to compress the refrigerant to a high pressure, a condenser for exchanging heat between the refrigerant and a fluid, and an expansion device to expand the refrigerant to a low pressure.
11. The system as recited in claim 9 wherein the first fan has a first diameter and the second fan has a second diameter, and the first diameter is greater than the second diameter.
12. The system as recited in claim 9 wherein the first fan operates at a first fan speed and the second fan operates at a second fan speed, and the first fan speed is greater than the second fan speed.
13. The system as recited in claim 9 wherein the first airflow and the second airflow exit the airflow management system through the common discharge, and the first airflow and the second airflow are directed along a substantially straight path from the first fan and the second fan, respectively, to the common discharge.
14. The system as recited in claim 9 wherein the first airflow and the second airflow exit the airflow management system through the common discharge and the second fan is located between the first fan and the common discharge.
15. The system as recited in claim 9 wherein the first fan and the second fan operate in parallel.
16. The system as recited in claim 9 wherein the first fan and the second fan draw the first airflow and the second airflow, respectively, over the evaporator coil.
17. The system as recited in claim 9 wherein the first fan and the second fan blow the first airflow and the second airflow, respectively, over the heating heat exchanger.
18. A method of managing an airflow comprising the steps of:
operating an airflow management system in one of a cooling mode and a heating mode;
generating a first airflow that exchanges heat with a refrigerant in an evaporator coil when the airflow management system is operating in the cooling mode and that exchanges heat with a heated medium in a heating heat exchanger when the airflow management system is operating in the heating mode; and generating a second airflow that exchanges heat with the refrigerant in the evaporator coil when the airflow management system is operating in the cooling mode and that exchanges heat with the heated medium in the heating heat exchanger when the airflow management system is operating in the heating mode, wherein the first airflow is stronger than the second airflow, and the first airflow and the second airflow flow through a common discharge.
19. The method as recited in claim 18 wherein the first airflow is generated by a first fan having a first diameter and the second airflow is generated by a second fan having a second diameter, wherein the first diameter is greater than the second diameter.
20. The method as recited in claim 18 wherein the first airflow has a first speed and the second airflow has a second speed, and the first speed is greater than the second speed.
CA2626064A 2005-11-16 2005-11-16 Airflow management system in a hvac unit including two fans of different diameters Expired - Fee Related CA2626064C (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/US2005/041279 WO2007061403A1 (en) 2005-11-16 2005-11-16 Airflow management system in a hvac unit including two fans of different diameters

Publications (2)

Publication Number Publication Date
CA2626064A1 true CA2626064A1 (en) 2007-05-31
CA2626064C CA2626064C (en) 2011-06-28

Family

ID=38067506

Family Applications (1)

Application Number Title Priority Date Filing Date
CA2626064A Expired - Fee Related CA2626064C (en) 2005-11-16 2005-11-16 Airflow management system in a hvac unit including two fans of different diameters

Country Status (5)

Country Link
US (1) US20090133856A1 (en)
CN (1) CN101310153B (en)
CA (1) CA2626064C (en)
HK (1) HK1126269A1 (en)
WO (1) WO2007061403A1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114777219B (en) * 2022-05-12 2023-10-27 江苏晋成空调工程有限公司 Air treatment unit with adjustable cooling coil

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JPH01181032A (en) * 1988-01-13 1989-07-19 Toshiba Corp Air conditioner
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JPH10119533A (en) * 1996-10-22 1998-05-12 Denso Corp Air conditioner for vehicle
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Also Published As

Publication number Publication date
CN101310153B (en) 2010-12-15
CA2626064C (en) 2011-06-28
CN101310153A (en) 2008-11-19
WO2007061403A1 (en) 2007-05-31
WO2007061403B1 (en) 2007-08-09
WO2007061403A8 (en) 2008-09-25
HK1126269A1 (en) 2009-08-28
US20090133856A1 (en) 2009-05-28

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Legal Events

Date Code Title Description
EEER Examination request
MKLA Lapsed
MKLA Lapsed

Effective date: 20121116