The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 24, 2001
Filed:
Jan. 11, 2000
Kabushiki Kaisha Toyoda Jidoshokki Seisakusho, Kariya, JP;
Abstract
An air conditioning system,may include a compressor,having a driving chamber,a cooling circuit,a heating circuit,and capacity controllers,The compressor,may have a suction port,a discharge port,a driving unit,provided within the driving chamber,The driving unit,decreases compressor output discharge capacity when pressure within the driving chamber,increases. The first capacity controller,and the second capacity controller,are provided in series onto the capacity control passage,The first capacity controller,opens the capacity control passage,when compressor suction pressure Ps results predetermined low-pressure state during operation of the cooling circuit,and the second capacity controller,opens the capacity control passage,during operation of the cooling circuit. As the result, the heat exchanger,in the cooling circuit,is prevented from being frosted. The first capacity controller,opens the capacity control passage,during operation of the heating circuit,and the second capacity controller,opens the capacity control passage,when compressor discharge pressure Pd results predetermined high-pressure state during operation of the heating circuit,As the result, the heating circuit,is prevented from being damaged by an abnormally high discharge pressure.