Valve unit and reaction apparatus having the same
First Claim
Patent Images
1. A valve unit comprising:
- a substrate;
a channel formed in the substrate defining a path through which a fluid flows;
a plug formed in the channel to block the path of the fluid in the channel when the plug is in a solid state at a room temperature, the plug including a phase change material and a plurality of heat-dissipating particles dispersed in the phase change material;
a phase change material chamber formed along the channel adjacent to the plug; and
an external energy source which irradiates the plug with electromagnetic energy,wherein, when the plug is irradiated with the electromagnetic energy, the plurality of fine heat-dissipating particles dissipate heat and the phase change material become molten, and flows to the phase change material chamber thereby opening the path to allow the fluid to flow, and wherein the heat-dissipating particles are dispersed in a hydrophobic carrier oil.
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Abstract
Provided are a valve unit and a reaction apparatus having the valve unit. The valve unit includes a phase transition material, which melts and expands upon an application of the electromagnetic waves to the valve filler, and the valve filler is directed into the channel through the connection passage and closes the channel. The valve unit also includes heat generation particles, which are dispersed in the phase transition material and generate heat upon an application of electromagnetic wave energy.
20 Citations
17 Claims
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1. A valve unit comprising:
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a substrate; a channel formed in the substrate defining a path through which a fluid flows; a plug formed in the channel to block the path of the fluid in the channel when the plug is in a solid state at a room temperature, the plug including a phase change material and a plurality of heat-dissipating particles dispersed in the phase change material; a phase change material chamber formed along the channel adjacent to the plug; and an external energy source which irradiates the plug with electromagnetic energy, wherein, when the plug is irradiated with the electromagnetic energy, the plurality of fine heat-dissipating particles dissipate heat and the phase change material become molten, and flows to the phase change material chamber thereby opening the path to allow the fluid to flow, and wherein the heat-dissipating particles are dispersed in a hydrophobic carrier oil.
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2. A valve unit comprising:
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a valve filler which includes a phase transition material and a plurality of heat generation particles; a chamber to receive the valve filler; a fluid channel which is connected to the chamber; and an external energy source which comprises a laser beam source irradiating a laser beam, wherein the valve unit is provided on a rotatable substrate, the heat generation particles are dispersed in the phase transition material and generate heat upon an application of electromagnetic wave energy of the laser beam from the laser beam source, wherein the phase transition material melts and expands upon an application of heat which is generated by the heat generation materials, and the valve filler is directed from the chamber into the channel to close the channel by centrifugal force caused by rotation of the substrate, and the heat generation particles are dispersed in a hydrophobic carrier oil. - View Dependent Claims (3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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Specification