Fluid injection device for vehicle radiator and method to use the same

Patent metadata

Field	Value
Publication number	US-10837349-B2
Application number	US-201916268877-A
Country	US
Kind code	B2
Filing date	Feb 6, 2019
Priority date	Feb 6, 2019
Publication date	Nov 17, 2020
Grant date	Nov 17, 2020

Abstract

A fluid injection device for vehicle radiator includes a main body. The main body includes a negative pressure device, a container, an injection opening, and a switching mechanism. The injection opening is adapted for connecting with an opening of a radiator of a vehicle. The negative pressure device and the container communicate the injection opening respectively.

First claim

What is claimed is:

1. A fluid injection device for vehicle radiator, including:
a main body, including a negative pressure device, a container, an injection opening, and a switching mechanism, the injection opening being adapted for connecting with an opening of a radiator of a vehicle, the negative pressure device and the container communicating the injection opening respectively, the switching mechanism selectively blocking communication between the injection opening and at least one of the negative device and the container,
wherein the main body includes a first channel, the injection opening is located at an end of the first channel, the negative pressure device and the container communicate the first channel respectively, the switching mechanism selectively blocks communication between the first channel and at least one of the negative device and the container;
wherein the negative pressure device includes a second channel, the second channel has a second opening at an end thereof, an other end of the second channel communicates the first channel and is located between the container and the injection opening, the switching mechanism further includes a second switch, the second switch is disposed on the second channel to selectively block communication between the second opening and the first channel.

2. The fluid injection device for vehicle radiator of claim 1 , wherein the negative pressure device further includes a check valve, the check valve is arranged in the second channel to be aligned with the second opening, the check valve only allows fluid to be discharged from the second channel.

3. The fluid injection device for vehicle radiator of claim 2 , wherein the container has a third channel, an end of the third channel is in communication with the first channel and located between the container and the injection opening, the switching mechanism further includes a third switch, and the third switch is disposed on the third channel to selectively block communication between the third channel and the first channel.

4. The fluid injection device for vehicle radiator of claim 3 , wherein the third switch includes a sealing member, the sealing member selectively blocks communication between the first channel and an end of the third channel.

5. The fluid injection device for vehicle radiator of claim 4 , wherein the third switch further includes a rod member, the sealing member is disposed on an end of the rod member, the sealing member is conical, the container has a positioning member, the rod member is slidably inserted through the positioning member.

6. The fluid injection device for vehicle radiator of claim 5 , wherein the positioning member includes a ring member, an insertion portion, and a plurality of rib members connecting the ring member and the insertion portion therebetween, the container has a conical body and a circumferential wall connected together, the third channel is arranged at an end of the conical body remote from the circumferential wall, the ring member is coupled to an inner face of the circumferential wall, the rod member is slidably inserted through the insertion portion.

7. The fluid injection device for vehicle radiator of claim 3 , further including a pressure meter and a fourth channel, the pressure meter being disposed on the main body and communicating the first channel, an end of the fourth channel communicating the first channel, the switching mechanism further including a fourth switch, the fourth switch being disposed on the fourth channel to selectively block communication between the fourth channel and the first channel.

8. A method to use fluid injection device for vehicle radiator, including steps of:
providing a main body including a negative pressure device, a container, an injection opening, and a switching mechanism, the injection opening being adapted for connecting to an opening of a radiator of a vehicle, the negative pressure device and the container communicating the injection opening respectively, the switching mechanism selectively blocking communication between the injection opening and at least one of the negative pressure device and the container; when the switching mechanism blocks communication between the container and the injection opening and keeps communication between the negative pressure device and the injection opening, the negative pressure device sucking gas in the radiator of the vehicle out via the injection opening so that the radiator has a lower pressure inside than a pressure outside, thereafter the switching mechanism blocking communication between the injection opening and the negative pressure device and keeping communication between the container and the injection opening so that fluid in the container flows into the radiator of the vehicle via the injection opening.

Assignees

• Lih Yann Ind Co Ltd

Inventors

• Liao Po-Lin

Classifications

• F28F2265/18

  for removing contaminants, e.g. for degassing · CPC title

• F28F2265/06

  by using means for draining heat exchange media from heat exchangers · CPC title

• F01P11/0204 Primary

  Filling · CPC title

• B67D7/0277

  using negative pressure · CPC title

• F28F9/22

  Arrangements for directing heat-exchange media into successive compartments, e.g. arrangements of guide plates · CPC title