Cooling device and heating and cooling apparatus

Patent metadata

Field	Value
Publication number	US-9777974-B2
Application number	US-201414536126-A
Country	US
Kind code	B2
Filing date	Nov 7, 2014
Priority date	May 9, 2012
Publication date	Oct 3, 2017
Grant date	Oct 3, 2017

Abstract

An analyzing device includes a heating device, a cooling device, and a controller. The cooling device includes a piezoelectric pump, a check valve, an exhaust valve, and an air tank. The analyzing device heats a subject by the heating device. The cooling device drives the piezoelectric pump while the heating device heating the subject. With this, the outside air is sucked through a suction port and the air that is discharged from the piezoelectric pump is accommodated in the air tank through the check valve. Then, the pressure in the air tank is increased. Thereafter, the cooling device stops driving of the piezoelectric pump. With this, the air in the air tank is discharged toward the subject via the exhaust valve so as to cool the subject.

First claim

The invention claimed is:

1. A cooling device comprising:
a pump having a suction hole and a discharge hole;
a tank that accommodates a gas; and
a valve having a first ventilation hole in fluid communication with the discharge hole of the pump, a second ventilation hole in fluid communication with the tank, and an exhaust hole that discharges the gas in the tank,
wherein the valve is configured to switch between a first communication state where the first ventilation hole and the second ventilation hole fluidly communicate with each other and gas flow is blocked between the second ventilation hole and the exhaust hole and a second communication state where gas flow is blocked between the first ventilation hole and the second ventilation hole and the second ventilation hole fluidly communicates with the exhaust hole.

2. The cooling device according to claim 1 ,
wherein the valve includes a valve housing in which the first ventilation hole, the second ventilation hole, and the exhaust hole are disposed, and
wherein a diaphragm divides an inner portion of the valve housing such that a first region is in fluid communication with the first ventilation hole and a second region is in fluid communication with the second ventilation hole in the valve housing.

3. The cooling device according to claim 2 , wherein the diaphragm is fixed to the valve housing such that:
the first ventilation hole and the second ventilation hole are in fluid communication with each other and gas flow is blocked between the second ventilation hole and the exhaust hole when a pressure in the first region is higher than a pressure in the second region, and
gas flow is blocked between the first ventilation hole and the second ventilation hole and the second ventilation hole and the exhaust hole are in fluid communication with each other when the pressure in the first region is lower than the pressure in the second region.

4. The cooling device according to claim 1 , wherein a heat sink is attached to the tank to cool the gas accommodated by the tank.

5. The cooling device according to claim 3 , wherein the valve housing and the diaphragm collectively form a check valve that controls fluid communication between the first ventilation hole and the second ventilation hole based on a pressure difference between the first region and the second region.

6. The cooling device according to claim 5 , wherein the valve housing and the diaphragm collectively form an exhaust valve that controls fluid communication between the second ventilation hole and the exhaust hole based on the pressure difference between the first region and the second region.

7. The cooling device according to claim 2 , wherein the diaphragm is define by a single flexible plate.

8. A heating and cooling apparatus comprising:
the cooling device according to claim 1 ; and
a heating device for heating a target object,
wherein the pump of the cooling device is driven while the heating device is heating the target object and the pump of the cooling device is not driven once the heating device stops heating the target object.

Assignees

• Murata Manufacturing Co

Inventors

• Kamitani Gaku
• Hirata Atsuhiko

Classifications

• F04B43/046

  with piezoelectric drive · CPC title

• F28F2250/08

  Fluid driving means, e.g. pumps, fans · CPC title

• F28F27/02 Primary

  for controlling the distribution of heat-exchange media between different channels ({static flow control means in header boxes F28F9/026}; arrangements of guide plates or guide vanes F28F9/22, F28F25/12) · CPC title

• F28D2021/0029

  Heat sinks · CPC title