JP2569297Y2 - Ice storage device for air conditioning - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an ice storage device for air conditioning, which stores a cold heat source for cooling in the form of latent heat of ice.

[0002]

2. Description of the Related Art In a so-called ice heat storage system in which cold heat is stored in the form of latent heat by storing ice in a heat storage water tank for air conditioning, the form of ice to be stored differs depending on the ice making method. (Fine ice suspended in water). Although both methods have their advantages and disadvantages, the applicant has already applied for the latter method of storing a so-called sherbet-like ice-water slurry in a heat storage water tank.
No. 7770, Japanese Patent Application No. 62-62681, Japanese Patent Application No. 62-102994, Japanese Patent Application No. 62-228800, Japanese Patent Application No. 62-245930, Japanese Utility Model Application No. 62-30383
No. 62, No. 62-181176-8, and No. 62-192012, etc., supercooled water cooled to below 0 ° C was produced as a continuous flow, and the supercooled water in this continuous flow was The present invention proposes a method of manufacturing liquid ice suitable for heat storage in which fine ice is dispersed by instantaneously releasing the ice.

[0003]

[Problems to be Solved by the Invention] When the supercooled water is continuously produced by the water cooler, and fine ice is precipitated from the continuous flow of the supercooled water and stored in the heat storage water tank, the above patent application and practical application As proposed in the new model registration application, it is advantageous to circulate and supply the water in the heat storage water tank to the water cooler. However, if the water supplied to the water cooler is accompanied by fine ice, the water cooler heat transfer tube freezes. Cause Such freezing of the pipeline is the most noticeable problem in the continuous production of supercooled water.

Japanese Utility Model Application No. 63-14563 and Japanese Utility Model Application No. 63-76854
In order to solve this problem, the applicant combines an ice collecting filter with a turbulence generating means to turbulence the water flow, and install an ice collecting filter upstream of the main filter to prevent defrosting. The scheme has already been proposed.

The present invention also aims at solving this problem, and aims to solve this problem by means different from the prior application.

[0006]

SUMMARY OF THE INVENTION The present invention relates to a supercooled water producing apparatus for continuously passing water through a water cooler and continuously extracting supercooled water having a temperature of 0 ° C. or less. A water supply pipe is provided outside the heat storage tank for storing heat source water, and a part of the water in the heat storage tank is continuously pumped to the water cooler, and the supercooled water flowing out of the water cooler is provided. A path is provided for returning the continuous flow to the heat storage water tank with or without a supercooling release device, and the water supply pipe is provided with a water passage container loaded with a filling material. An object of the present invention is to provide an ice heat storage device for air conditioning, characterized in that a heater is interposed in addition to a water passage container loaded with an object.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Even if a main filter for purification is provided in a water supply line from a heat storage water tank to a water cooler to prevent suspended solids and ice from migrating into the water cooler, very fine Ice (ice nuclei) passes through this filter, or generates ice nuclei for some reason along the way, and when this flows into the heat transfer tubes of the water cooler that produces the supercooled water, it triggers freezing inside the tubes. Become. Although the ice nuclei can be eliminated or suppressed to some extent by the heat generated by the drive of the pump in the water supply line, this is not a definitive solution. Relying on is dangerous. Therefore, in the present invention, the above-mentioned problem is solved by interposing a water supply container filled with a filler in the water supply pipe, and securing the stirring and staying time of the water in the pipe. is there.

Hereinafter, the contents of the present invention will be described in detail with reference to the embodiments of the drawings.

FIG. 1 shows an embodiment of the entirety of the ice heat storage device for air conditioning according to the present invention. In the present invention, particularly in the cooling season, a large amount of cold heat is stored by storing sherbet-like ice in the heat storage water tank, and this ice making is performed using, for example, nighttime electric power, and the stored cold heat (that is, zero ℃) is circulated and supplied to the air conditioners in the building.

In FIG. 1, reference numeral 1 denotes a heat storage water tank, and 2 denotes a water cooler. Water in the heat storage water tank 1 is supplied to a water cooler 2 by a circulation pump 3. That is, a part of the water in the heat storage water tank 1 is continuously supplied to the water cooler 2 via the water supply pipe 4 by the circulation pump 3, and a continuous flow of the supercooled water cooled to zero degrees C or less is produced. You. The continuous flow of the supercooled water is discharged into the atmosphere from a pipe outlet 5 located above the surface of the heat storage water tank, and is dropped toward the heat storage water tank 1. In practice, it is convenient to provide a device for releasing the supercooling during the process of dropping. In the example shown in the figure, the subcooling canceling device comprises a baffle plate 7 that interrupts the continuous flow 6 of the supercooling water discharged in the horizontal direction. That is, when the supercooled water 6 collides with the baffle plate 7, the supercooled state is instantaneously released by the collision energy, and the ice-water slurry with the fine ice precipitated flies from the baffle plate 7, and this is stored in the heat storage water tank. Fall.

As the water cooler 2, for example, a shell-and-tube type heat exchanger that allows water to flow inside a number of heat transfer tubes 8 can be used. That is, a cooling chamber 12 is formed by partitioning the inside of the shell 9 with partition plates 10 and 11, a large number of heat transfer tubes 8 are penetrated into the cooling chamber 12, and water is passed through the heat transfer tubes 8 and outside the tubes. A coolant is supplied to the cooling chamber 12 to cool water flowing continuously through the pipe to 0 ° C. or less.
At that time, the refrigeration cycle is configured so that the cooling chamber 12 functions as an evaporator of the heat pump. That is, compressor 1
3. A refrigerant pipe is connected between the condenser 14, the expansion valve 15 and the evaporator of the cooling chamber 12, and the pressure of the refrigerant evaporating in the cooling chamber 12 is kept constant so that each heat transfer tube 8 is kept at a temperature of 0 ° C. or less. It can be cooled to a certain temperature. Instead of such a refrigeration cycle, a configuration may be adopted in which brine at a predetermined temperature is supplied from the refrigerator into the cooling chamber 12.

The inventors of the present invention have previously reported in Japanese Patent Application No. 62-271922 that cooling the heat transfer tube 8 to a temperature at which the temperature of the tube wall in contact with water does not become −5.8 ° C. or less (however, 0 ° C. or less). ,
It was shown that supercooled water can be produced continuously regardless of the Reynolds number of the water flow (that is, flow velocity and pipe diameter), the water temperature before cooling, and the water temperature after cooling. Therefore, also in the present invention, the temperature of the inner wall of the heat transfer tube 8 in the cooler 2 is controlled to a temperature that does not become −5.8 ° C. or less at any point (however, 0 ° C. or less). In this manner, supercooled water is taken out from the heat transfer tube 8 in the water cooler 2 as a continuous flow from the discharge port 5 of each heat transfer tube without freezing.
When fine ice is entrained in the water supplied to the cooling water, the ice is precipitated from the supercooled water and causes the heat transfer tube 8 to freeze. The primary filter 18 is installed in a tank near the water intake 17 of the water supply pipe 4, the ice is primarily collected by the primary filter, and the main filter 20 is installed in the water supply pipe. Can be trapped to some extent, and the melting action works by applying heat by operating the pump 3.
It is not perfect.

The present invention solves this problem by inserting a water supply container 22 (hereinafter referred to as a “filler loading container”) loaded with a filler into the water supply pipe 4 and further inserting a heater 21 together. It is a solution. In FIG. 1, the filling container 22 is shown, and in FIG.
21 shows an example in which 21 is inserted. It is convenient to use a plug-type heater as shown in FIG. 3 as the heater 21 inserted into the water supply line 4. In FIG. 3, reference numeral 23 denotes a heating element, reference numeral 24 denotes a plug supporting the heating element, and reference numeral 25 denotes a cheese portion to which the plug-type heater is attached.

A filling material loading container 22 inserted into the water supply line 4
Fig. 4 shows a three-dimensional resin molded product molded into a container through which water flows with an increased space ratio as a filler, and an example thereof is shown in Fig. 4. In this example, a double cylindrical container having a small cylindrical inner cylinder 28 provided inside a cylindrical container main body 27 is used, and a filler 30 is loaded therein. The inner cylinder 28 is attached to a removable lid 29, and the length of the inner cylinder 28 is
It is shorter than the depth. Water supply port 31 in container body 27
A drain port 32 is provided at the center of the lid 29 (inside the inner cylinder 28), and is connected to these pipes of the water supply conduit 4.

FIG. 5 shows an example of the loaded filler 30. As can be seen in this example, the bar-shaped resin is formed in a three-dimensionally intricate manner and has a size of an outer diameter of 2 mm.
It is about 5 mm. This is commercially available as "Filler S" manufactured by Mitsubishi Plastics Corporation. By loading such a filling material 30 having a large void ratio into the container shown in FIG.
In the process of flowing through the bed, it is turbulent without receiving a large pressure loss. The entrained ice nuclei are melted by this turbulence. The residence time during the passage through the vessel assists in the melting. In the container shown in FIG. 4, after going around the outside of the inner cylinder 28, it enters the inside of the inner cylinder 28 from below, so that a sufficient staying time can be obtained.

FIGS. 6 to 9 show another example of the filling material loading container 22. FIG. In the example of FIG. 6, a water supply port 31 and a drainage port 32 are provided on the wall of the container main body 27 so as to face each other, and a partition wall 33 that vertically partitions the inside of the container into two chambers is provided on the lid 29. The water that enters the chamber dives below the partition wall 33 and enters the other chamber. 36 indicates a perforated plate.

In the example shown in FIG. 7, a drain chamber 34 is provided with the bottom of the container body 27 having a double bottom.
Water in the container is allowed to flow through the perforated plate 36 at the center of the bottom plate 35, and an inner cylinder 37 shorter than the container height is attached to the center of the bottom plate 35. The water supply port 31 is attached to the lower part of the container body slightly above the drain chamber. As a result, the water that has entered the outside of the inner cylinder 37 in the container from the water supply port 31 rises while turning, then descends inside the inner cylinder 37, and flows out of the drain port 32 through the drain chamber 34.

The example in FIG. 8 has a structure in which the example in FIG. 4 is turned upside down. That is, an inner cylinder shorter than the container length
38 is attached to the bottom plate 39 of the container body 27, a drain port 32 is provided in the center of the bottom plate so that water in the inner cylinder 38 can be extracted, and a water supply port 31 is provided below the side wall of the container body 27. In addition,
In this example, the entirety of the filler 30 is floated from the bottom of the container by disposing a perforated plate 36 (which may be a net) at the bottom of the container.

In the example shown in FIG. 9, a water supply channel 41 and a drainage channel 42 are provided extending to the inside of the container body 27, and the water supply channel 41 and the drainage channel 42 are also filled with the filler 30.

4 and 6 to 9, a bent path of water is formed in the container, and the filler 30 is loaded in the bent path. Therefore, the water flowing therethrough has a sufficient residence time and a large turbulence effect is obtained during that time. As a result, even if water accompanied by ice nuclei flows in, it can be melted. Further, by removing the lid 29, the maintenance operation can be easily performed.

When the heater 21 is provided in the water supply pipe 4 as shown in FIG. 2 after providing such a filling material container 22, the insertion position of the filling material container 22 and / or the heater 21 is required. Is preferably downstream of the pump 3, but may be upstream of the pump 3 in some cases. In any case, it is preferable to install it near the water tank at a position as far away from the water cooler 2 as possible. It is convenient to use a cartridge type filter as the main filter 20.

[0022]

[Effect of the Invention] As described above, according to the present invention, the problem of heat transfer tube freezing during the production of supercooled water can be solved by a simple configuration in the case of producing sherbet-like ice from supercooled water to store heat for air conditioning. As a result, sherbet-like ice can be produced stably.

[Brief description of the drawings]

FIG. 1 is an equipment layout diagram showing an embodiment of an air-conditioning ice heat storage device of the present invention.

FIG. 2 is a diagram showing another example of the structure of a water supply line to a water cooler in the apparatus of FIG. 1;

FIG. 3 is a schematic sectional view of a heater used in the apparatus of FIG.

FIG. 4 is a schematic sectional view of a filler-loaded container used in the apparatus of FIG. 1;

FIG. 5 is a perspective view showing an example of a filler used in the present invention.

FIG. 6 is a schematic sectional view showing another example of a filler-loaded container used in the apparatus of FIG.

FIG. 7 is a schematic sectional view showing another example of a filler-loaded container used in the apparatus of FIG.

FIG. 8 is a schematic sectional view showing another example of a filler-loaded container used in the apparatus of FIG.

FIG. 9 is a schematic sectional view showing another example of a filler-loaded container used in the apparatus of FIG.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Heat storage water tank 2 Water cooler 3 Circulation pump 4 Water supply line 5 Supercooled water discharge port 7 Subcooling release device 8 Heat transfer tube 18 Primary filter 20 Main filter 21 Heater 22 Filler loading container 30 Filler

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Masato Nakanishi 3-20-9 Nishiikuta, Tama-ku, Kawasaki City, Kanagawa Prefecture (72) Inventor Masayuki Tanino 3-20-9, Nishiikuta, Tama-ku, Kawasaki City, Kanagawa Prefecture (56) References JP-A-63-14063 (JP, A) US Patent 4671077 (US, A)

Claims (4)

(57) [Scope of request for utility model registration] 1. A supercooled water producing apparatus for continuously passing water through a water cooler and continuously extracting supercooled water having a temperature of 0 ° C. or less is provided with a heat storage water tank for storing heat source water for air conditioning. A water supply line is installed outside the storage tank for continuously pumping part of the water in the storage tank to the water cooler, and the continuous flow of supercooled water flowing out of the water cooler is transferred to the storage tank. An ice heat storage device for air-conditioning, comprising a path for returning through or without a cooling release device, and a water supply container filled with a filler interposed in the water supply pipe. 2. A heat storage water tank for storing a heat source water for air conditioning, wherein a supercooled water producing apparatus for continuously passing water through a water cooler and continuously extracting supercooled water having a temperature of 0 ° C. or less is provided. A water supply line is installed outside the storage tank for continuously pumping part of the water in the storage tank to the water cooler, and the continuous flow of supercooled water flowing out of the water cooler is transferred to the storage tank. An ice heat storage device for air conditioning, comprising: a path for returning through or without a cooling release device, and a water supply container filled with a filler and a heater interposed in the water supply pipe. 3. The water passage container has a bent water passage formed in the container, and a filler is loaded into the bent water passage.
Or the ice heat storage device for air conditioning according to 2. 4. The air conditioner ice heat storage device according to claim 1, wherein a filter is further interposed in the water passage.