Power driven compressor that prevents overheating of control circuit

Abstract

A power driven compressor that can prevent its control circuit from overheating includes: a housing whose interior accommodates a transmission assembly and a compressor assembly and has an air inlet and a coolant outlet; a control circuit accommodating box which is disposed on the housing and has a coolant inlet and an air outlet; a connecting pipe whose one end connects to the air outlet of the control circuit accommodating box and whose other end connects to the air inlet of the housing. When the transmission assembly is driven by electrical power, the coolant enters the control circuit accommodating box via the coolant inlet thereof. It then goes through the air outlet, the connecting pipe, and the housing air inlet into the housing for compression. The compressed coolant goes out via the coolant outlet of the housing.

1 . A power driven compressor that prevents its control circuit from overheating, comprising:
 a housing, which has an air inlet and a coolant outlet, and whose interior is formed with an accommodating space for accommodating a transmission component and a compression component, the transmission component being driven by electrical power to make the compression component perform a compression action;   a control circuit accommodating box, which is mounted on the housing and has a coolant inlet and an air outlet; and   a connecting pipe, whose one end connects to the air outlet of the control circuit accommodating box and whose other end connects to the air inlet on the housing;   wherein when the transmission component is driven by electrical power, the coolant first enters the control circuit accommodating box via the coolant inlet thereon, passes in sequence the air outlet, the connecting pipe, and the air inlet of the housing into the accommodating space of the housing for compression, and the coolant compressed to a high pressure is expelled outward via the coolant outlet on the housing.   
     
     
         2 . The power driven compressor of  claim 1 , wherein the housing consists of a bottom cover and an end cover, the air inlet is formed on the bottom cover, the coolant outlet is formed on the end cover, the transmission component is disposed in the bottom cover, and the compression component is disposed in the end cover. 
     
     
         3 . The power driven compressor of  claim 1 , wherein the transmission component includes a transmission axle, a rotor connect on the transmission axle, and a stator disposed around the rotor, the transmission component is driven by electrical power to generate a rotating magnetic field, and the rotor connector on the transmission axle simultaneously brings the compression component into operation. 
     
     
         4 . The power driven compressor of  claim 3 , wherein the compression component consists of a static scroll and a orbiting scroll, the orbiting scroll connects to the transmission axle, and the orbiting scroll is driven to rotate eccentrically with respect to the static scroll, providing a compression effect. 
     
     
         5 . The power driven compressor of  claim 1 , wherein the control circuit accommodating box has an open end, and a side board correspondingly covers the open end of the control circuit accommodating box to block the connection between the control circuit accommodating box and the external space. 
     
     
         6 . The power driven compressor of  claim 1 , wherein the control circuit accommodating box consists of a base and a top cover, a separator is inserted between the base and the top cover to separate the interior of the control circuit accommodating box into a disposition space and the flow space, and the coolant inlet and the air outlet are in fluid communications with the flow space, respectively. 
     
     
         7 . The power driven compressor of  claim 6 , wherein a guide rib is inserted inside the base between the coolant inlet and the air outlet to define the flow space as a coolant flow passage. 
     
     
         8 . The power driven compressor of  claim 1 , wherein the control circuit accommodating box extends downward a plurality of supports, the control circuit accommodating box is mounted on the housing via the supports, and an air gap is formed between the control circuit accommodating box and the housing.