JPH0517571Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a simple cooling device for cooling a fluid.

[Conventional technology]

Conventionally, typical devices for cooling fluids include an evaporator that evaporates refrigerant liquid through adiabatic expansion and absorbs heat from the outside to achieve a cooling effect, and refrigerant vapor from the evaporator. a condenser that liquefies refrigerant vapor that has become high temperature and high pressure in the compressor by releasing heat; and a condenser that adiabatically expands the refrigerant liquid from the condenser and evaporates it again in the evaporator. The so-called "vapor compression type" is widely known, which has a cooling cycle consisting of an expansion valve and the like for cooling.

[Problem that the invention attempts to solve]

However, conventional cooling devices with such a cooling cycle have problems such as being complicated and expensive, and the same is true of other types of cooling devices (eg, steam injection type, etc.).

In view of the above problems, the present invention provides a cooling device that can easily obtain a cooling effect by utilizing part of the energy of the fluid to be cooled.

[Means for solving problems]

In other words, the simple fluid cooling device according to the present invention is
It has a container that is filled with a refrigerant liquid leaving a necessary evaporation space and is insulated from the outside, and a cooled fluid feeding tube that partially passes through the refrigerant liquid in the container and forms a heat exchange section, The structure is such that a constriction formed in the tube and the evaporation space are communicated through a nozzle.

[Effect]

In the above configuration, the pressure in the container (evaporation space) communicating with the constriction part via the nozzle decreases due to the negative pressure generated in the constriction part when the cooled fluid is flowed into the cooled fluid supply tube, When the refrigerant liquid in the container is evaporated, the refrigerant liquid is kept at a low temperature due to the consumption of vaporization energy, so that the refrigerant liquid is not exposed to heat in the heat exchange section of the tube passing through the refrigerant liquid. Cooling of the cooling fluid is now performed.

〔Example〕

Next, one embodiment of the cooling device of the present invention will be described based on FIG.

In the figure, reference numeral 1 indicates a sealed container in which 3 _L of refrigerant liquid such as water is sealed leaving an appropriate evaporation space 2 at the top and is insulated from the outside, and 4 indicates a part of the container that passes through 3 _L of refrigerant liquid. This is a cooled fluid feeding tube forming a heat exchange section 5 having a meandering or spirally wound shape. A constriction section 6, which is a so-called bench lily tube, is formed in the flow path of the tube 4, and an inner peripheral space 6a of the constriction section 6 communicates with the evaporation space 2 in the container 1 via a nozzle 7. .

Now, when 8 h of fluid to be cooled such as hot water is allowed to flow into the fluid to be cooled feeding tube 4, the inner circumferential space 6 of the constriction portion 6
In a, the flow rate of the fluid 8h increases and negative pressure is generated, and the pressure inside the container 1 communicating with the space 6a through the nozzle 7 decreases, so that the refrigerant liquid 3 _L is vaporized, that is, the refrigerant A portion of the liquid 3 _L becomes refrigerant vapor 3 _G , which is sucked into the throttle section 6 and flows through the tube 4 together with the fluid to be cooled 8 h. Due to the vaporization, part of the internal heat energy of the refrigerant liquid 3 _L is consumed as vaporization energy and the temperature becomes low. It is cooled by the refrigerant liquid _3L , becomes a low-temperature fluid 8c, and is sent out together with the vapor _3G .

In addition, in order to prevent the refrigerant liquid 3 _L from gradually decreasing due to the vaporization and the cooling effect from weakening,
It is desirable that the refrigerant liquid 3 _L can be replenished at any time using a float valve (not shown), and in order to improve the cooling efficiency by vaporization, the refrigerant liquid 3 _L
It is also possible to have a structure in which the evaporation area is made large relative to the capacity of (specifically, the container 1 is made large in the horizontal direction) and a plurality of constricted portions 6 and nozzles 7 are provided.

[Effect of idea]

As explained above, the simple cooling device of the present invention evaporates the refrigerant liquid using the negative pressure generated when the fluid to be cooled flows through the constriction part, and the heat exchanger with the refrigerant liquid that is kept cold by the evaporation. The cooling device is configured to cool the fluid to be cooled by exchanging the fluid, and has excellent effects such as being extremely simple in structure and miniaturized compared to conventional cooling devices. .

[Brief explanation of drawings]

FIG. 1 is a sectional view showing a schematic structure of an embodiment of the present invention. 1... Container, 2... Evaporation space, 3 _L ... Refrigerant liquid,
3 _G ...Refrigerant vapor, 4... Cooled fluid feeding tube, 5... Heat exchange section, 6... Throttle section, 7... Nozzle.

Claims (1)

[Scope of utility model registration request] It has a container that is filled with a refrigerant liquid leaving a necessary evaporation space and is insulated from the outside, and a cooled fluid feeding tube that partially passes through the refrigerant liquid in the container and forms a heat exchange section, A simple fluid cooling device characterized in that a constriction formed in the tube and the evaporation space are communicated through a nozzle.