JPH0641063Y2 - Ice storage device for air conditioning - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial application] The present invention relates to an ice heat storage device for air conditioning, which stores a cold heat source for cooling in the form of latent heat of ice.

[Conventional technology]

The so-called ice heat storage method, in which cold heat is stored in the form of latent heat by storing ice in a heat storage water tank for air conditioning, has two types of ice depending on the ice making method: solid (ice block) and liquid (fine ice Suspended in water). Although both methods have their advantages and disadvantages, the applicant has already proposed Japanese Patent Application No. 62-47770 and Japanese Patent Application No. 62-47770 as the latter method of storing so-called sherbet-like ice-water slurry in a heat storage water tank.
62-62681, Japanese Patent Application No. 62-102994, Japanese Patent Application No. 62-228800,
Japanese Patent Application No. 62-245930, Japanese Application No. 62-30383, Japanese Application No. 62-1811
76-8, Japanese Utility Model Application No. 62-192012, etc., supercooled water cooled to below 0 ° C. is produced as a continuous flow, and the supercooled state of this continuous flow is instantly released to make it fine. An invention device was proposed to produce liquid ice suitable for heat storage in which fresh ice is dispersed.

[Problems to be solved by the invention]

When supercooled water is made continuously with a water cooler and fine ice is deposited from this continuous flow of supercooled water and stored in a heat storage water tank, as proposed in the above patent application and utility model registration application, It is advantageous to circulate and supply the water in the heat storage water tank to the water cooler, but if the water supplied to this water cooler is accompanied by fine ice, it causes freezing of the heat transfer tube of the water cooler.
Such freezing of the pipeline is the most important problem in continuous production of supercooled water.

In Japanese Patent Application No. 63-14563 and Japanese Patent Application No. 63-76854, the applicant used a method of combining an ice collecting filter and a turbulent flow generating means for turbulent water flow as means for solving this problem.
We have already proposed a method to insert an ice collection filter for preventing ice recovery on the upstream side of the main filter.

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

[Means for solving problems]

The present invention is a supercooled water production device that continuously draws water through a water cooler to continuously take out supercooled water below 0 ° C outside the heat storage water tank for storing heat source water for air conditioning. Installed in
A water supply pipe for continuously pumping a part of the water in the heat storage water tank to the water cooler is provided, and a continuous flow of supercooled water flowing out from the water cooler is passed to the heat storage water tank via a supercooling canceling device. The present invention provides an ice heat storage device for air conditioning, characterized in that a path for returning without or through is provided, and a water container having a filter and a heater or a filling material is inserted in the water supply conduit.

Even if a main filter for purification is installed in the water supply line from the heat storage water tank to the water cooler to prevent suspended solids and ice from migrating to the water cooler, very fine ice (ice nuclei) When ice nuclei are generated by passing through the filter or in the middle of the route for some reason, and flow into the heat transfer tube of the water cooler that produces supercooled water, they trigger freezing in the tube. This ice nucleation can be eliminated or suppressed to some extent by the heat generated by driving the pump in the water supply line, but this is not a definitive solution, and only the heat generated by the pump is generated, for example, at the initial start-up of the equipment. Relying on is dangerous. For this reason, in the present invention, a heater is inserted into this water supply line to actively reheat, and this reheat has a negative thermal effect when trying to produce supercooled water. The amount of heat input was kept as small as possible to secure the agitation of water in the pipeline and the filling container for the residence time, which was intended to solve the above-mentioned problems.

The contents of the present invention will be specifically described below with reference to the embodiments of the drawings.

〔Example〕

FIG. 1 is an embodiment showing the entire ice storage device for air conditioning of the present invention. In the present invention, especially in the cooling season, a large amount of cold heat is stored by storing sherbet-like ice in the heat storage water tank. Water near ℃) is circulated and supplied to the air conditioners in the building.

In FIG. 1, 1 is a heat storage water tank, 2 is a water cooler, and the 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 by the circulation pump 3 via the water supply pipe line 4, and a continuous flow of the supercooled water cooled to below 0 ° C. is produced therein. It This continuous flow of supercooled water is discharged into the atmosphere from the pipeline outlet 5 located above the water surface of the heat storage water tank, and drops toward the heat storage water tank 1. In practice, it is convenient to install a device that releases supercooling in the process of this drop. In the illustrated example, this supercooling canceling device has a baffle plate 7 for interrupting the continuous flow 6 of the supercooling water discharged in the horizontal direction.
It consists of That is, when the supercooled water 6 collides with the baffle plate 7, the supercooled state is instantly released by the collision energy, and the ice-water slurry in which fine ice is deposited flies from the baffle plate 7 to the heat storage water tank. To fall.

As the water cooler 2, for example, a shell-and-tube heat exchanger in which water is passed through the inside of a large number of heat transfer tubes 8 can be used. That is, the shell 9 is partitioned by partition walls 10 and 11 to form a cooling chamber 12, and the cooling chamber 1
A large number of heat transfer tubes 8 are penetrated into the inside of the tube 2, and water is passed through the heat transfer tubes 8 and a coolant is supplied to the cooling chamber 12 outside the tubes to cool the water continuously flowing through the tubes to below 0 ° C. At that time, the refrigeration cycle is configured so that the cooling chamber 12 functions as an evaporator of the heat pump. That is, the compressor 13, the condenser 14,
Refrigerant piping is provided between the expansion valve 15 and the evaporator of the cooling chamber 12, and the pressure of the refrigerant evaporated in the cooling chamber 12 is maintained constant to cool each heat transfer tube 8 to a constant temperature of 0 ° C. or less. be able to. Instead of such a refrigeration cycle, brine having a predetermined temperature may be supplied from the refrigerator to the cooling chamber 12.

In the Japanese Patent Application No. 62-271922, the inventors of the present invention previously reported that if the heat transfer tube 8 is cooled to a temperature at which the tube wall temperature in contact with water does not fall below -5.8 ° C (but below 0 ° C), It was clarified that supercooled water can be continuously produced regardless of the number of Reynolds (that is, flow velocity and pipe diameter), water temperature before cooling, water temperature after cooling, and so on. Therefore, even in the present invention,
The inner wall temperature of the heat transfer tube 8 in the cooler 2 is-
Control at a temperature that does not fall below 5.8 ℃ (but below 0 ℃). In this way, in the heat transfer pipe 8 in the water cooler 2, the supercooled water is taken out as a continuous flow from the discharge port 5 of each heat transfer pipe without causing freezing. When ice is entrained, this triggers ice to precipitate from the supercooled water, causing the heat transfer tube 8 to freeze. A primary filter 18 is installed in the tank near the water intake 17 of the water supply line 4, and primary ice is collected by this primary filter,
Furthermore, by installing the main filter 20 in the water supply line, the fine ice in the tank can be collected to some extent, and the heat is applied by the operation of the pump 3 to cause a melting action, but it is still not perfect.

The present invention is a water container in which a heater 21 and / or a filler is loaded in a water supply conduit 4 (hereinafter referred to as a filler loading container).
The problem is solved by inserting 22. In FIG. 1, only the heater 21 is shown, in FIG. 2 the filling material container 22 is shown, and in FIG. 3, the heater 21 and the filling material container 22 are shown.
Shows an example in which is inserted.

It is convenient to use a plug-type heater as shown in FIG. 4 for the heater 21 inserted in the water supply conduit 4. In FIG. 4, 23 is a heating element, 24 is a plug that supports the heating element, and 25 is a cheese part to which this plug-type heater is attached.

The filler loading container 22 to be inserted into the water supply conduit 4 is a container through which water flows, and a three-dimensional resin molded product molded with a high porosity is loaded as a filler. An example thereof is shown in FIG. showed that. In this example, a double cylinder container in which a small cylinder inner cylinder 28 is provided inside a cylinder container body 27 is used, and a filler 30
It is loaded with. The inner cylinder 28 is attached to a removable lid 29, and the length of the inner cylinder 28 is shorter than the depth of the container body 27. The container body 27 has a water inlet 31 and a lid 29.
A drain port 32 is provided in the center (inside of the inner cylinder 28) of the pipe and is connected to the pipes of these water supply pipe lines 4. FIG. 6 shows an example of the filled filler 30. As seen in this example, a bar-shaped resin is formed in a three-dimensional direction by interlocking with each other, and its size is about 2 to 5 mm in outer diameter. This is available on the market as "filler S" manufactured by Mitsubishi Plastics. By loading the filling material 30 having such a large porosity into the container shown in FIG. 5 and inserting the filling material 30 in the water supply pipe line 4, water is subjected to a large pressure loss in the process of flowing through the filling material 30 layer. It is turbulent without. The ice nuclei entrained by this turbulent action are melted. The residence time when passing through the container assists this melting. In the case of the container shown in FIG. 5, since it goes around the outside of the inner cylinder 28 and then enters the inner cylinder 28 from below, a sufficient stay time can be obtained.

7 to 9 show another example of the filler loading container 22. In the example of FIG. 7, a water supply port 31 and a water discharge port 32 are provided on the wall of the container body 27 so as to face each other, and a partition wall 33 is provided on the lid 29 to vertically divide the inside of the container into two chambers. The water that has entered this chamber dives under the partition wall 33 and enters the other chamber. 36 indicates a perforated plate. In the example of FIG.
A drain chamber 34 is provided by making the bottom of the container body 27 a double bottom, and in this drain chamber 34, a perforated plate at the center of a bottom plate 35 is provided.
Water in the container is allowed to flow from 36, and an inner cylinder 37 having a length shorter than the container height is attached to the central portion of the bottom plate 35. The water supply port 31 is attached below the container body, which is slightly above the drainage chamber 34. As a result, the water supply port 31
The water that has entered the outside of the inner cylinder 37 in the container rises while swirling, then descends in the inner cylinder 37, passes through the drain chamber 34, and exits from the drain port 32. The example of FIG. 9 has a structure in which the example of FIG. 5 is turned upside down. That is, the inner cylinder 38 having a length shorter than the container length is attached to the bottom plate 39 of the container body 27,
A drain port 32 is provided at the center of the bottom plate so that water in the container 38 can be extracted, and a water supply port 31 is provided below the side wall of the container body 27. In this example, a porous plate 36 (which may be a net) is placed at the bottom of the container to float the entire filler 30 from the bottom of the container. In the example shown in FIG. 10, the water supply channel 41 and the drainage channel 42 are provided extending to the inside of the container body 27, and the filling material 30 is also loaded in the water supply channel 41 and the drainage channel 42.

The filler loading container 22 shown in FIGS. 5 and 7 to 10 has a bent path of water formed therein and the filler 30 is loaded in the bent path. Therefore, the water that flows through this has a sufficient residence time and a large turbulence effect during that time. As a result, even if water accompanied by ice nuclei flows in, it can be melted. Moreover, the maintenance operation can be easily performed by removing the lid 29.

The position of inserting the heater 21 and / or the filling material container 22 into the water supply conduit 4 is preferably on the downstream side of the pump 3, but may be on the upstream side of the pump 3 in some cases. In any case, it is preferable to install it in the vicinity of the water tank as far as possible from the water cooler 2. It is convenient to use a cartridge side filter as the main filter 20.

[Effect of device]

As described above, according to the present invention, in the case of making sherbet-like ice from supercooled water to store heat for air conditioning, the problem of heat transfer tube freezing during supercooled water production can be solved by a simple configuration. Ice can be manufactured stably.

[Brief description of drawings]

FIG. 1 is a device arrangement system diagram showing an embodiment of an ice heat storage device for air conditioning of the present invention, and FIGS. 2 and 3 are other structural examples of a water supply pipe portion to a water cooler in the device of FIG. FIG. 4, FIG. 4 is a schematic sectional view of a heater used in the apparatus of FIG. 1, FIG. 5 is a schematic sectional view of a filler loading container used in the apparatus of FIG. 1, and FIG. 6 is the present invention. FIG. 7, FIG. 8, FIG. 9, FIG. 10, and FIG. 10 are perspective views showing examples of fillers used, and are schematic cross-sectional views showing examples of the filler loading container used in the apparatus of FIG. . 1 …… Heat storage water tank, 2 …… Water cooler, 3 …… Circulation pump, 4 ……
Water supply pipe, 5 …… Supercooled water discharge port, 7 …… Supercooling release device, 8 …… Heat transfer tube, 18 …… Primary filter, 20 …… Main filter, 21 …… Heater, 22 …… Filler Loading container, 30 ... Filling material.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Masato Nakanishi 3-20-9 Nishi-Ikuta, Tama-ku, Kawasaki-shi, Kanagawa (72) Masayuki Tanino 3-20-9 Nishi-Ikuta, Tama-ku, Kawasaki-shi, Kanagawa (56) References JP-A-63-14063 (JP, A)

Claims (3)

[Scope of utility model registration request] 1. A supercooled water producing apparatus for continuously supplying water to a water cooler to continuously take out supercooled water at a temperature of 0 ° C. or lower, and a tank of a heat storage water tank for storing heat source water for air conditioning. The water storage pipe is installed outside, and a water supply pipe for continuously pumping a part of the water in the heat storage water tank to the water cooler is provided, and a continuous flow of supercooled water flowing out from the water cooler is passed to the heat storage water tank. An ice heat storage device for air conditioning, which is provided with a path for returning through a cooling release device or not and in which a filter and a heater are provided in the water supply pipe line. 2. A supercooled water producing apparatus for continuously supplying water to a water cooler to continuously take out supercooled water at a temperature of 0 ° C. or lower, and a tank of a heat storage water tank for storing heat source water for air conditioning. It is installed outside, and a water supply pipe line for continuously pumping a part of the water in the heat storage water tank to the water cooler is provided, and a continuous flow of supercooled water flowing out from the water cooler is passed to the heat storage water tank. An ice heat storage device for air conditioning, which is provided with a path for returning through a cooling release device or not and through which a water container filled with a filler is inserted in the water supply pipe line. 3. The ice heat storage device for air conditioning according to claim 2, wherein the water passage container has a bent water passage formed therein, and the filler is loaded in the water passage.