JPH0375461A - Hot water cooler - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a hot water cooler that has a function of effectively cooling a medium to be cooled using a chemical heat pump that uses an adsorbent and a refrigerant liquid.

2. Description of the Related Art Conventionally, reversible cold heat generators have been known in which an adsorbent and a refrigerant liquid are sealed in separate containers via valves that can be opened and closed to create a vacuum system. As this method of use, liquid coolers have been known that have a relatively simple structure and are compact and can be used repeatedly in everyday homes. This principle is based on the fact that the heat of adsorption that is adiabatically generated when a dry adsorbent rapidly adsorbs refrigerant liquid vapor in a vacuum system becomes a heat generating part, and as the refrigerant liquid vaporizes due to the promotion of adsorption, the vaporization heat is generated from the refrigerant liquid. This is based on the fact that the heat is taken away and a cold/hot region is formed.

Problems to be Solved by the Invention Currently, hot water in household jar pots is kept at about 95 degrees Celsius, but in order to cool the hot water in the jar pot, it takes about 80 degrees Celsius to cool it down to 80 degrees Celsius by turning off the heater power. 2
It is time consuming. Therefore, there was a strong desire to lower the hot water in the jar pot to a desired temperature in a short period of time. In addition, cooling technology that uses compressors such as refrigerators is currently used to make drinks such as water and barley tea cold and at a low temperature, but cooling takes time and it is possible to make drinks in a short time. There was a strong desire to develop technology that could perform cooling.

The present invention has been made in view of these problems, and
The first objective is to obtain a hot water cooler that utilizes the principle of a chemical heat pump and has the ability to cool the liquid in a short time by directly circulating the liquid to be cooled.

The second object is to provide a hot water cooler that has the ability to indirectly cool the liquid to be cooled in a short time by circulating a heat exchange medium.

Means for Solving the Problems In order to achieve the above-mentioned first object, the present invention provides a container having a space serving as a cooling section in which at least a heat exchanger is disposed, and containing an adsorbent through a porous partition. A valve and a heat exchange fin are arranged in a refrigerant liquid storage container and a path connecting these two containers, and the system consisting of the two containers, the path, and the valve is evacuated, and the piping from the heat exchanger is evacuated. A pipe is connected to a reservoir of liquid to be cooled, and constitutes a hot water cooling unit that circulates liquid to be cooled via a pump.

In addition, in order to achieve the second object, the present invention provides that the pipe connected to the liquid reservoir to be cooled is connected to a heat exchanger within the liquid reservoir to be cooled, and the heat exchanger of the cooling section, the heat exchanger , a hot water cooler in which a pump circulates an independent heat exchange medium sealed in a pipe connecting a water exchanger and a pump.

Operation If configured as described above, the hot water cooler of the present invention can be configured as described above.
For the purpose of cooling, the refrigerant liquid in the vacuum system is instantaneously cooled by opening a valve, and then the liquid to be cooled is circulated in the heat exchanger to transfer heat between the refrigerant liquid and the liquid to be cooled. Conduction occurred, making it possible to lower the temperature of the liquid to be cooled in a short time.

Further, for the second purpose, by opening the valve during the cooling operation, the refrigerant liquid in the vacuum system is instantaneously cooled, thereby cooling the heat exchange medium inside the heat exchanger. By circulating this heat exchange medium and indirectly cooling the cooled liquid using a heat exchanger installed inside the cooled liquid reservoir, it is possible to reduce the temperature of the cooled liquid in a short time. Ta.

Example Embodiments of the present invention will be described below with reference to the accompanying drawings.

In FIG. 1, reference numeral 1 denotes a container containing an adsorbent 2, which has a cooling section 4, which is a space provided through a porous partition wall 3.

5 is a refrigerant liquid storage container containing refrigerant liquid 6; both containers 1.
A passage 7, heat exchange fins 8, and a valve 9 are provided to connect the vessel 1.5, the passage 7, and the valve 9, and the inside of the container 1.5, the passage 7, and the valve 9 are maintained in a vacuum state. Furthermore, inside the container 1 there is a heater 10 for heating the adsorbent 2 and a heat exchanger 11 in the cooling section 4.
has been set up. A pump 12 circulates the cooled liquid 14 in the cooled liquid reservoir 13 to the heat exchanger 11.

Next, the operation will be explained. In FIG. 1, the adsorbent 2 is previously heated and reactivated, and then the valve 9 is closed. When the valve 9 is opened, the refrigerant liquid 6 contained in the container 5 passes through the path 7 and is sucked into the cooling section 4 of the container 1. The refrigerant liquid 4 is vaporized at the same time as it is inhaled, and is successively adsorbed by the adsorbent 2. At this time, since the refrigerant liquid 6 is adiabatically deprived of latent heat of vaporization, the temperature drops rapidly and the entire cooling section 4 is cooled.

At this time, the liquid to be cooled flows into the heat exchanger 11 disposed in the cooling unit 4, and the liquid to be cooled 14 in the liquid reservoir 13 is circulated by the pump 12, thereby increasing the temperature of the liquid to be cooled. descend. On the other hand, the adsorbent 2 generates heat of adsorption when adsorbing refrigerant liquid vapor. As a result of the operation, the adsorbent 2
When the capacity for refrigerant liquid vapor decreases or the adsorption saturation amount is reached, the adsorbent 2 is heated with the heater 10 with the valve 9 open to desorb the adsorbed moisture, sucked out into the container 5, and condensed. Close the rear valve 9 and prepare for the next use. At this time, if the heat exchange fins 8 are air-cooled, the refrigerant liquid 6 can be returned to the container 5 more quickly.

Below, 1 kg of Na-13X type zeolite is used as an adsorbent,
FIG. 2 shows the cooling performance of an embodiment of the present invention using 300 g of water as the refrigerant liquid and 1000 cc of hot water at 100° C. as the liquid to be cooled, in comparison with the temperature drop when allowed to cool.

In FIG. 2, the horizontal axis shows the cooling time, and the vertical axis shows the temperature of the liquid to be cooled. Curve a is based on the first example, and curve a shows the temperature drop during cooling. According to this example, 1000cc of hot water at 100℃ is heated to 60℃ in 1 minute to 30℃ in 5 minutes.
It can be cooled to ℃. On the other hand, when left to cool, the cooling curve remained almost flat, and the method according to the present invention enabled cooling in a short time.

In FIG. 3 showing a cross-sectional view of the basic configuration of a hot water cooler according to a second embodiment of the present invention, 1 is a container containing an adsorbent 2, and a heater 10 for heating the adsorbent is installed inside. It is installed internally. 5 is a container containing a refrigerant liquid 6 and a heat exchanger 11, and a path 7 connecting both containers 1.5, heat exchange fins 8, and a valve 9 are provided. The interior is maintained in a vacuum state. heat exchanger 1
A pipe connected from 1 is connected via a pump 12 to a cooled liquid reservoir 13 containing a cooled liquid 14.

Next, the operation will be explained. In FIG. 3, after the material 2 has been previously adsorbed and reactivated by heating, the valve 9 is closed. When the valve 9 is opened, the refrigerant liquid 6 contained in the container 5 is released.
is evaporated in the container 5, and the coolant vapor passes through the path 7 and is adsorbed by the adsorbent 2 in the container 1. At this time, since the refrigerant liquid 6 is adiabatically deprived of latent heat of vaporization, the temperature rapidly drops and the entire container 5 is cooled. At this time, the liquid to be cooled flows into the heat exchanger 11 disposed in the container 5, and the liquid to be cooled 14 in the liquid reservoir 13 is circulated by the pump 12, thereby lowering the temperature of the liquid to be cooled. let On the other hand, the adsorbent 2 generates heat of adsorption when adsorbing refrigerant liquid vapor. As a result of the operation, if the ability of the adsorbent 2 to absorb refrigerant liquid vapor decreases or the adsorption saturation amount is reached, the adsorbed moisture is desorbed by heating the adsorbent 2 with the heater 10 with the valve 9 open. After condensing inside the container 5, the valve 9
Close it and prepare for next use. At this time, if the heat exchange fins 8 are air-cooled, the refrigerant liquid 6 can be returned to the container 5 more quickly.

In FIG. 2 showing the cooling performance of the embodiments of the present invention, curve C is for the second embodiment. According to this example, 1000cc of 100°C hot water is heated to 70°C in 1 minute and 50°C in 5 minutes.
It can be cooled to ℃.

Next, FIG. 4 shows another embodiment. The container containing the adsorbent, the container containing the refrigerant liquid, the path and valve connecting the two containers, etc. are omitted, and it is possible to connect either type of the first or second embodiment. be. In FIG. 4, a pipe connected to the cooled liquid reservoir 13 is connected to a heat exchanger 15 within the cooled liquid reservoir, and the heat exchanger 1 of the cooling section 4
1. The pump 12 circulates an independent heat exchange medium sealed inside the pipes and the pump 12 that connect the heat exchanger 15 and the mature exchanger. Furthermore, the cooled liquid reservoir 13 is removable.

This operation is similar to that in the first and second embodiments. According to this embodiment, the liquid to be cooled 14 is indirectly cooled by cooling the refrigerant liquid inside the heat exchanger 15.

Examples of the type of adsorbent in each of the above examples include zeolite, silica gel, calcium chloride, etc., but zeolite A type, X type, Y type, etc. are preferable. Also,
Examples of the refrigerant liquid include water, alcohol (methanol, ethanol, etc.), acetone, chlorofluorocarbon, etc.The shape and position of the adsorbent and cooling section are limited to those shown in each example. isn't it.

Effects of the Invention As described above, the hot water cooler of the present invention uses the principle of a chemical heat pump that uses an adsorbent and a refrigerant liquid, so it can perform a reversible cooling operation, and the cooling operation can also be performed quickly. There is almost no operating sound. Further, by circulating the liquid to be cooled through a heat exchanger inside the cooling section using a pump, the liquid to be cooled can be cooled in a short time.

In addition, the present invention cools the heat exchange medium by circulating the heat exchange medium inside the heat exchanger in the cooling section, and indirectly cools the liquid to be cooled. Even when liquids to be cooled, such as water, barley tea, coffee, etc., are cooled, there is no confusion in taste or odor.

[Brief explanation of drawings]

Fig. 1 is a sectional view of a hot water cooler showing the first embodiment of the present invention, and Fig. 2 shows the cooled water when 1000 cc of hot water at 100°C is cooled by the hot water cooler according to the present invention and when it is left to cool naturally. Comparative diagram of liquid cooling performance. Figure 3 is a sectional view of a hot water cooler showing the second embodiment of the present invention. Figure 4 is a sectional view of a cooled liquid reservoir showing the third embodiment of the invention. be. ■, 5... Container, 2... Adsorbent, 3... Porous partition, 4... Cooling section, 6... Refrigerant liquid, 7... Route,
8...Heat exchange fin, 9...Valve, 10...Heater 11.15...Heat exchanger, 12...Pump, 13...Liquid reservoir to be cooled, 14...To be cooled liquid.

Claims (2)

[Claims] (1) A container having a space serving as a cooling section in which at least a heat exchanger is arranged, and containing an adsorbent through a porous partition;
A valve and a heat exchange fin are arranged in the refrigerant liquid storage container and a path connecting these two containers, and the system consisting of the two containers, the path, and the valve is evacuated, and the pipe connected from the hot water heat exchanger is A hot water cooler that is connected to a reservoir of cooled liquid and circulates the cooled liquid via a pump. (2) A pipe connected to the liquid reservoir to be cooled is connected to a heat exchanger within the liquid reservoir to be cooled, and the heat exchanger of the cooling section, the heat exchanger, and the inside of the pump connect the heat exchanger, the heat exchanger, and both heat exchangers. The hot water cooler according to claim 1, wherein an independent heat exchange medium enclosed in the water cooler is circulated by a pump.