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Heat pump system for vehicle and method of controlling the same

A technology of a heat pump system and a control method, which is applied to heat pumps, heating methods, air conditioning systems, etc., and can solve problems such as reduced heating performance and reduced stability

Active Publication Date: 2013-10-23
HANON SYST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] If frost builds up on the surface of the external heat exchanger 48 due to the inability of the external heat exchanger 48 to absorb heat, the temperature and pressure of the refrigerant inside the system decrease, and therefore, the temperature of the air discharged into the vehicle interior decreases As a result, the heating performance is significantly reduced, and the stability of the system is also reduced due to the introduction of liquid refrigerant into the compressor

Method used

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  • Heat pump system for vehicle and method of controlling the same
  • Heat pump system for vehicle and method of controlling the same
  • Heat pump system for vehicle and method of controlling the same

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Embodiment Construction

[0028] Now, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

[0029] First, the heat pump system for vehicles according to the present invention includes a compressor 100 , an internal heat exchanger 110 , a second expansion device 120 , an external heat exchanger 130 , a first The expansion device 140 and the evaporator 160 are preferably applied to an electric vehicle or a hybrid vehicle.

[0030]In addition, the first bypass line ( R1 ) bypassing the first expansion device 140 and the evaporator 160 , the second bypass line ( R2 ) bypassing the external heat exchanger 130 and the second expansion device 120 installed thereon The expansion lines (R3) are respectively connected in parallel to the refrigerant circulation line (R). The first reversing valve 191 is installed at the branch point of the first bypass line (R1), the second reversing valve 192 is installed at the branch point of the second bypas...

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Abstract

Disclosed therein are a heat pump system for a vehicle, which determines that frosting begins on an exterior heat exchanger 130 and carries out a defrosting control if a difference value between outdoor temperature and refrigerant temperature of an outlet side of the exterior heat exchanger is above a frosting decision temperature in a heat pump mode, thereby increasing frost-prevention and defrosting effects and enhancing heating performance and stability of the system because the system recognizes the beginning of frosting on the exterior heat exchanger 130 at a proper time so as to carry out the defrosting control.

Description

technical field [0001] The present invention relates to a heat pump system for a vehicle and a control method thereof, and more particularly, to a heat pump system for a vehicle and a method for controlling the heat pump system, if the outdoor temperature and the external heat exchanger in the heat pump mode The heat pump system for a vehicle and the method for controlling the heat pump system determine that frost has started to form on the external heat exchanger, and perform defrosting control. Background technique [0002] Generally, an air conditioner for a vehicle includes a cooling system for cooling the interior of the vehicle and a heating system for heating the interior of the vehicle. On the evaporator side of the refrigerant cycle, the cooling system cools the interior of the vehicle by exchanging heat between air passing outside the evaporator and refrigerant flowing inside the evaporator to cool the air. On the heater core side of the cooling water circulation...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F24F5/00F24F11/00F25B47/00
CPCF25B2400/0411F25D21/002B60H2001/00949F25B30/02F25B2400/0409B60H1/00921F25B47/022B60H2001/00961B60H2001/3263B60H2001/326F25B41/00B60H2001/3261B60H2001/224B60H1/321B60H2001/3252B60H1/00785B60H1/00914F25D21/006F25D21/12
Inventor 姜成镐金学圭崔永镐李祯宰金泰银徐正勋
Owner HANON SYST
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