JPH0752535Y2 - Absorber - Google Patents

Description

TECHNICAL FIELD The present invention relates to an absorber used in an absorption heat source device.

2. Description of the Related Art In an absorption heat source device such as an absorption refrigerator or an absorption heat pump, an absorber that absorbs a heat medium such as steam in an absorption liquid is provided. By the way, in this kind of operating system, since it is usually operated at atmospheric pressure or less, outside air enters the system, or air or other non-condensable gas dissolved in the working fluid is released, It significantly deteriorates the performance of the absorber. For this reason, in the conventional absorber, a degassing nozzle connected to a vacuum pump is provided just above the liquid level during steady operation of the lower header to discharge air, non-condensed gas, etc. .

Problems to be Solved by the Invention According to the above-mentioned conventional configuration, at the start of operation, the heat medium is dissolved in the absorbing liquid, and the amount of liquid in the absorber is larger than that in steady operation. The liquid level inside also rose, and there was a problem that the degassing nozzle sank below the liquid level. Further, if the deaeration nozzle is provided in the upper part so as not to sink, heavy air exists in the immediate vicinity of the liquid surface, so that there is a problem that sufficient deaeration cannot be performed.

Then, this invention aims at providing the absorber which can solve the said subject.

Means for Solving the Problems In order to solve the above problems, the absorber of the present invention has an upper header having a heat medium introduction port and a concentrated absorbent supply pipe, and a lower part having a rare absorbent discharge port. Header and
In a absorber having a heat transfer tube for absorbing the heat medium from the upper header to the lower header while absorbing the heat medium and absorbing heat of the absorbing liquid, a floating body having a gas suction port on the liquid surface in the lower header Along with
The lower end of the gas suction port is connected to an external vacuum degassing device via a flexible tube.

Action In the above configuration, since the gas suction port is provided in the floating body, even if the liquid level in the lower header fluctuates, it is possible to follow the fluctuation without any problems, and therefore, it is sufficient even at the start of operation and during steady operation. Deaeration can be performed.

Embodiment An embodiment of the present invention will be described below with reference to FIGS. 1 and 2.

Reference numeral 1 denotes an absorber used for an absorption heat source device (for example, an absorption refrigerator, an absorption heat pump, etc.), which has a steam introduction port (heat medium introduction port) 2 and is provided with a concentrated absorbent supply pipe 3. The upper header 4, the lower header 6 having the outlet 5 for the rare absorbent, and the heat transfer tube 7 for dropping the rare absorbent that has absorbed vapor from the upper header 4 to the lower header 6 and removing the heat of the rare absorbent. And have. A float (floating body) 9 having a gas suction port 8 vertically extending therethrough is disposed inside the lower header 6, and a flexible hose is provided at the lower end of the gas suction port 8 of the float 9. One end of a (flexible tube) 10 is connected, and the other end of the flexible hose 10 is led out of the lower header 6 and connected to a vacuum pump (vacuum deaerator) 11. Of course, the upper end portion of the gas suction port 8 of the float 9 is opened to the gas phase side on the liquid surface.

In the above-mentioned configuration, in the upper header 4, the introduced steam is absorbed by the concentrated absorbing liquid and drops in the heat transfer tube 7 and is air-cooled and stored in the lower header 6 and then discharged from the outlet 5 to the outside. Is discharged. By the way, at the start of operation and at the time of steady operation, the air and the non-condensable gas dissolved in the working fluid come out of the liquid, but these gases are the gas suction port 8 of the float 9 and the flexible hose 10. It is discharged by the vacuum pump 11 via. That is, deaeration is performed.

Since the gas suction port 8 is provided in the float 9 as described above, when the liquid level in the lower header 6 fluctuates, the fluctuation can be followed. Therefore, sufficient degassing can be performed in any case. it can.

As described above, according to the configuration of the present invention, since the gas suction port is provided in the floating body, even if the liquid level in the lower header fluctuates, the fluctuation can be followed without any problem. That is, sufficient degassing can be performed even at the start of operation and during steady operation. In particular, since deaeration at the start of operation is possible, problems such as shortening of the cooling start-up time and generation of crystals due to deterioration of absorption performance can be solved, and, of course, changes in outside air temperature during steady operation. Even if the liquid level in the lower header fluctuates due to fluctuations in cooling load or cooling load, sufficient deaeration can be performed.

[Brief description of drawings]

The drawings show one embodiment of the present invention. FIG. 1 is a sectional view showing a schematic overall structure, and FIG. 2 is a sectional view of a main part of a lower header. 1 ... Absorber, 2 ... Steam inlet, 3 ... Concentrated absorbent supply pipe, 4 ... Upper header, 5 ... Discharge port, 6 ... Lower header, 7 ... Heat transfer pipe, 8 ... Gas Suction port, 9 ... Float, 10 ... Flexible hose, 11 ... Vacuum pump.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Kenji Maehara 5-3 28 Nishikujo, Konohana-ku, Osaka City, Osaka Prefecture Hitachi Shipbuilding Co., Ltd. (72) Haruo Abe 5-5, Nishikujo, Konohana-ku, Osaka City, Osaka Prefecture 3-28 Hitachi Shipbuilding Co., Ltd. (72) Inventor Tetsuro Furukawa 5-3-8 Nishikujo Nishi, Konohana-ku, Osaka City, Osaka Prefecture (3) In Hitachi Shipbuilding Co., Ltd. (72) Kazuyuki Miyake Nishikujo, Konohana-ku, Osaka City, Osaka Prefecture 5th-328th Hitachi Shipbuilding Co., Ltd. (72) Inventor Tatsuhiko Umeda Nishikujo 5-328 Nishikojo, Konohana-ku, Osaka-shi, Osaka Prefecture (72) Hitachi Shipbuilding Co., Ltd. (72) Takeshi Yano Konohana-ku, Osaka-shi, Osaka Nishikujo 5-chome 3-28 Hitachi Shipbuilding Co., Ltd. (56) Reference JP-A-54-147550 (JP, A)

Claims (1)

[Scope of utility model registration request] 1. An upper header having a heat medium introduction port and a concentrated absorbent supply pipe, a lower header having a rare absorbent discharge port, and absorbing the heat medium from the upper header to the lower header. In an absorber having a heat transfer tube for dropping the liquid and removing the heat of the absorbing liquid, a floating body having a gas suction port is suspended above the liquid surface in the lower header, and the lower end of the gas suction port is An absorber characterized in that it is connected to an external vacuum deaerator through a flexible tube.