JPS582537A - Heat accumulating type air conditioner - Google Patents

Abstract

PURPOSE:To ensure safe and reliable operation of a heat accumulating type air conditioner using a heat accumulating medium capable of accumulating cold and to increase its heat exchanging efficiency, by forming a passage by-passing a heat exchanger used for cooling a room to be air conditioned, in the manner that it can be connected or disconnected selectively. CONSTITUTION:In accumulating cold, a by-pass passage 9 is connected in the circuit by opening a gate valve 10, while a heat exchanger 7 used for cooling a room to be air-conditioned is disconnected by closing a gate valve 11. Resultantly, cooling water 8 in a heat accumulating or regenerative tank 4 is cooled by a cooling heat exchanger 3 while it is circulated through the by-pass passage 9 by a circulating pump 6, so that cold is accumulated in the tank 4. In space- cooling operation, on the other hand, the valve 10 is closed and the valve 11 is opened for feeding cold in the tank 4 to the heat exchanger 7. Thus, it is enabled to ensure safe and reliable operation of the air conditioner and to increase its heat exchanging efficiency.

Description

[Detailed description of the invention] The present invention performs indoor cooling, etc. using a heat storage material that cools due to cold storage.
Thermal storage type air conditioner is installed on your own machine.

The conventional O heat storage large air ll1 l Japanese machine is K as shown in Figure 1.
Since the operation is carried out as follows, that is, the electric power rate O1
1 Moka has heat storage nital l. This ice stores cold and acts as a self-weighted heat storage material 2. Then, during the daytime when the IK air conditioner is installed in the vehicle, the circulation pump 6 is operated to flow the cooling water 8 into the in-cylinder refrigerated cylinder S, which is used for heat exchange for cooling the cylinder. 117]
Cool the inside of the car.゛In this Maronai cooling MiK, jk in the heat storage tank 4 is cooled one by one to cool the cooling water 8, and cooling W is performed satisfactorily.

However, in the heat storage type air fs heating machine of Jin O11, the heat storage product of 940g is large, and in the illustrated 0 secondary 'air heating machine, cold IF411H is operated to store cold IIK.
Since the cooling water 8 in the heat storage tank 4 is in a stationary state 11, the growth of ice in the heat storage material is different depending on the location in the heat storage tank 4, and there are places where ice grows quickly and places where it grows slowly. Excellent heat exchange performance.

Furthermore, since 1 water becomes ice Km2, the volume increases rapidly by about 20 m2, so in places where ice grows quickly, cooling
There was a risk that A would be wiped clean with ice, and the heat transfer tube would be destroyed by the pressure generated when the volume of ice expanded. □ The purpose of the present invention is to provide a heat storage type air conditioner which can be made based on these 0JIK sickles, has a high p% milk exchange efficiency, is safe and has excellent reliability.

Hereinafter, the present invention will be described in Nos. 2 to 311. Explain about administration.

In PijIllk, the same parts are given the same reference numerals and the explanation @ is omitted.

Figure 2 shows the present invention -〇- assembly hook. It is formed by providing a conduction switching device, that is, a gate valve 11, which is connected to the junction between the bypass flow path, the indoor cooling heat exchanger 867, and the edge cooling water 8, and switches the conduction state of the bypass flow path, the indoor cooling heat exchanger 867, and the edge cooling water 8. There is.

Next, I will explain the effects of this feeding.

During cold storage, open the gate valve lO on one side of KFi and open the bypass flow path 9.
The other gate valve 11 is closed, the heat exchanger γ for cooling the mold is closed 11KL, and the circulation pump 6 is operated. As a result, the cooling water 8 in the heat storage tank 4 is forced to circulate through the bypass flow path, and the cooling water 80 is uniformly cooled by the cooling heat exchanger 3 in the heat storage tank 4. The ice O Takecho is also successfully carried out, and a person who can effectively reconcile the 0IF- in the heat storage tank 4 and store electricity will come.

Therefore, the heat exchange efficiency is also high < 1, and the abnormal generation of ice between the cooling heat exchangers and the buds is prevented. Destruction of □ is also prevented.

During the daytime, the internal cooling #i4 cutoff valve to, .11 is completely reversed to perform the same operation as in the past. At the time of cooling, more cold is stored in the heat storage tank 4' than in the past, so it is possible to perform the absolute amount of cooling (as in the past).

Part S shows another embodiment of the present invention, and this embodiment further includes pressure sensing folds @14° at the inlet 12 and outlet ribs of the heat storage tank 4 of the indoor refrigeration cycle. It was established.

With this hook, various pressures are detected during cold storage! 11114, 1
When the pressure difference indicated by 5 reaches a certain bud mound, ll[K? i cell
It acts to stop the operation of 2 and stop cold storage.

That is, if the operation of the air conditioner 3 is continued and cold storage is performed,
Ice grows in the heat storage tank 4, and at the same time, the dynamic resistance of the cooling water SOW flowing in the heat storage tank 4 increases. This is k,
The pressure at the inlet 120 gradually increases, and on the contrary, the pressure at the outlet U
9, each pressure detection device 114
．． The pressure difference indicated by 15 increases. When the pressure difference corresponding to the allowable value for ice growth is reached, the operation of the air conditioner is stopped 20 times, stopping the generation of ice and preventing the destruction of the heat storage tank 4 and the heat exchanger tubes of the cooling heat exchanger s4m. .

First, each pressure is detected as shown in Figure 3! A control device 116 such as a comparator that compares the signals from 614.15 and stops the operation of the air conditioner @2 when a certain value is reached can automatically stop the cold storage. A diaphragm or the like can be used as this comparator.

In the above embodiments, ice-water was used as the heat storage material, but a heat storage material using 11iit phase transition heat, such as calcium chloride (CaC1m) aqueous solution, or a heat storage material using intermediate phase transition heat may also be used.

As explained in each of the above embodiments, the present invention has 1 high heat exchange efficiency and prevents destruction of the m vessel due to abnormal growth of ice.
Since it is possible to suppress the heat within the IILF, it has the effect of being excellent in II-characteristics.

[Brief explanation of drawings]

FIG. 1 is a configuration diagram showing a conventional 01FJIlk type air conditioner. Fig. at is a block diagram showing a heat storage type air collection system according to the present invention, and Fig. 3 is a block diagram showing another embodiment of the present invention. L...Heat storage t-cycle, 2...Air conditioner, 3...Cooling heat exchanger, 4...Heat storage tank, S...In-mold refrigeration cycle, 6...M1st pump, 7 ...Indoor cooling heat exchanger, 9...Bypass flow path, 10.11...Gate valve, 14, 15...Pressure detection device. Applicant's agent Kiyoshi Fin Mata Figure 3

Claims (1)

[Scope of Claims] 1. A cooling system and a cooling heat exchanger installed in a heat storage cylinder filled with a heat material are circulated to achieve good heat storage. J In a regenerative air conditioner II having an indoor refrigeration system in which the heat storage tank, a circulation pump, and an indoor cooling heat exchanger are connected for circulation, and the heat storage material is circulated, the indoor refrigeration cycle has the A heat storage air type air storage device characterized in that a bypass flow path is provided to bypass an indoor cooling heat exchanger, and a conduction switching device is provided that can freely switch the continuity between the bypass flow path and the indoor cooling heat exchanger. 2. A heat storage cycle in which an air conditioner and a heat exchanger for cooling provided in a heat storage tank filled with a heat storage material that can store cold are connected in circulation, the heat storage tank, a circulation concentration pump, and an indoor cooling system. The heat exchanger is connected for circulation and the heat storage material -1lsI
In the heat storage type air conditioner 1@, which has an in-vehicle refrigeration unit, the front W*internal refrigeration unit is 5 eta hlc, and the heat exchanger for the broom is installed.
A switching device is provided to freely switch the conduction state between the bypass flow path and the Fukui cooling J@heat exchanger and exchanger, and the heat storage IIO population pressure and outlet pressure of the in-mold refrigeration are provided. This heat storage type air l1il Japanese scissors device is characterized in that it is equipped with a pressure detection device that detects and, respectively.