Outdoor unit and air-conditioning apparatus

Abstract

An outdoor unit includes at least one of a hexagonal sealing nut and attention attracting means that needs to be operated by an operator when removing a hexagonal sealing nut.

1 . An outdoor unit including a refrigerant pipe connecting valve having a refrigerant charging service port that is sealed by a hexagonal sealing nut, the hexagonal sealing nut being removed when charging refrigerant, the outdoor unit comprising:
 an indication portion indicating at least one of a type of refrigerant that is used and a precautions text; and   a projection portion that attaches the indication portion to one of the refrigerant pipe connecting valve and the hexagonal sealing nut.   
     
     
         6 . The outdoor unit of  claim 1 , wherein the indication portion is held on at least one of surfaces defining a hexagonal prism shape of the hexagonal sealing nut by the projection portion. 
     
     
         7 . The outdoor unit of  claim 1 ,
 wherein the projection portion is provided with a C-shaped attachment portion, and   wherein the projection portion is attached to the refrigerant pipe connecting valve, by fitting the attachment portion onto the refrigerant pipe connecting valve using an elastic force of the attachment portion.   
     
     
         8 . (canceled) 
     
     
         9 . The outdoor unit of  claim 1 ,
 wherein the projection portion is provided with a ring-shaped attachment portion, and   wherein the projection portion is attached to the hexagonal sealing nut, by fitting the attachment portion onto a hexagonal-prism-shaped portion of the hexagonal sealing nut.   
     
     
         10 . (canceled) 
     
     
         11 . The outdoor unit of  claim 1 ,
 wherein the projection portion is provided with a C-shaped attachment portion,   wherein a groove is formed in at least a part of a hexagonal-prism-shaped portion of the hexagonal sealing nut, and   wherein the projection portion is attached to the hexagonal sealing nut, by fitting the attachment portion into the groove of the hexagonal sealing nut using an elastic force of the attachment portion.   
     
     
         12 . An outdoor unit including a refrigerant pipe connecting valve having a refrigerant charging service port that is sealed by a hexagonal sealing nut, the hexagonal sealing nut being removed when charging refrigerant, the outdoor unit comprising:
 a cylindrical indication cover indicating at least one of a type of refrigerant that is used and a precautions text and covering an outer periphery of a hexagonal-prism-shaped portion of the hexagonal sealing nut.   
     
     
         13 . The outdoor unit of  claim 12 , wherein the indication cover is attached to a side panel defining a side surface of a casing of the outdoor unit via a coupling portion. 
     
     
         14 . The outdoor unit of  claim 13 , wherein the coupling portion is formed integrally with the indication cover. 
     
     
         15 . (canceled) 
     
     
         16 . The outdoor unit of  claim 13 , wherein a distal end of the coupling portion which is attached to the side panel includes
 a distal locking portion that abuts an inner surface of the side panel, and   a rib that is disposed at a proximal end side with respect to the distal locking portion, and adheres to an outer surface of the side panel.   
     
     
         17 . The outdoor unit of  claim 13 , wherein a drain hole is formed in at least a part of a bottom surface of the indication cover. 
     
     
         18 . The outdoor unit of  claim 1 ,
 wherein the projection portion is provided with a ring-shaped attachment portion, and   wherein the projection portion is attached to the refrigerant pipe connecting valve, by attaching the attachment portion to the hexagonal sealing nut while the attachment portion is fitted on a neck of a thread portion of the refrigerant charging service port.   
     
     
         19 - 20 . (canceled) 
     
     
         21 . An outdoor unit including a refrigerant pipe connecting valve having a refrigerant charging service port that is sealed by a hexagonal sealing nut, the hexagonal sealing nut being removed when charging refrigerant, the outdoor unit comprising:
 an indication portion indicating at least one of a type of refrigerant that is used and a precautions text, and detachably covering a hexagonal-prism-shaped portion of the hexagonal sealing nut,   an attachment portion that is attached to a base portion of the refrigerant pipe connecting port of the refrigerant pipe connecting valve, and   an extension portion that connects the indication portion and the attachment portion to each other.   
     
     
         22 . An air-conditioning apparatus comprising:
 the outdoor unit of  claim 1 ; and   an indoor unit that is connected to the outdoor unit.   
     
     
         23 . The outdoor unit of  claim 21 ,
 wherein the extension portion has a shape extending from one surface of the indication portion toward the refrigerant pipe connecting port of the refrigerant pipe connecting valve, and   wherein the indication portion and the extension portion are flexibly coupled.   
     
     
         24 . The outdoor unit of  claim 21 , wherein the extension portion is formed in a shape of a string. 
     
     
         25 . The outdoor unit of  claim 1 ,
 wherein the hexagonal sealing nut that requires an operation using a dedicated tool is provided, and   wherein the hexagonal sealing nut corresponds to the refrigerant charging service port having a thread diameter of ½ inch or less, and has a width across flats of 18 mm or greater.   
     
     
         26 . The outdoor unit of  claim 1 , wherein a type of refrigerant is indicated on at least one surface of a hexagonal-prism-shaped portion of the hexagonal sealing nut.