JPS5855656A - Absorption type refrigerating and/or heating machine - 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 The present invention relates to a refrigerant liquid and a suction station type refrigeration expansion/or heating machine OII production cabinet control. ``type refrigeration and/or heating machine''
i% 1ljlj type air conditioner and heater with i, refrigeration operation is turned on,
When only heating operation is used, or when both refrigeration and heating operation are used, aS (aS) means ``tube''.

In the secondary levy type refrigeration and/or heating machine, Kyo 5iii
*In order to prevent an abnormal riser, an O level switch for detecting the generator K11li is provided, and the level switch
Start and stop the 箪 pump to find out ◎, i! A method has also been proposed in which the F liquid pump O is started and stopped by detecting the 1 suction station O housing.〇This conventional example [Explained based on attached O Fig. 1] is a system diagram of a conventional O double effect 1lllll type refrigeration and/or heating machine.
1 is the absorber, 2 is the evaporator, 1 is the I11 generator, 4 is the l[2 generator, S is the condenser, 6 is the second ripening exchanger, 7 is the first heat exchanger, 6 is * *pump,! is the refrigerant pump, and 10 is the liquid level switch (0, in other words, in the method shown in Figure 1, it starts and stops at 60). However, in the case of the above method, when starting the armpit machine,
And when the cooling water temperature decreases, 1c#i, 1111 generator 5 to second generator 4 K11iIt- Since the driving force for circulating (the pressure difference between the first generator and the second generator 10-position head) becomes smaller, gi11 11. The liquid level of generated BS rises and the solution pump starts and stops frequently. <No.

In addition, there was a drawback that the control system was complicated because the liquid level relay was used to start and stop the liquid pump.

In order to eliminate these drawbacks, the system shown in the attached FIG. 2 has also been proposed. Among the symbols, 1 to 9 are the same as in FIG. 1, To9.11 is a liquid level detection box, and 12 is a float valve. In other words, in the Fig. 2 0 method, the generated IIO liquid level control pipe is connected to the low pressure side pipe via a float valve.However, in the case of the above method, when the four-tooth valve is fully closed, the If leakage is not allowed and the seal is not perfect, high-pressure steam from the generator will flow into the low-pressure side, causing a significant reduction in the tightening capacity.In addition, there will be no OII when fully closed. In order to do so, the manufacturing precision of the valve itself is required and it becomes expensive.Furthermore, since the relatively high concentration solution on the upstream side of the 74-F valve stagnates without being circulated, It causes crystallization when the outside temperature drops.

The object of the present invention is to provide a retractable refrigeration and/or heating system that eliminates the above-mentioned drawbacks, has a simplified control system, is inexpensive, and is safe.

That is, to summarize the present invention, the present invention is an absorption type system consisting of an absorber, an evaporator, a generator, a condenser, a heat exchanger, and a connecting cold 1/I & S liquid path. In refrigeration and/or heating equipment, through self-cutting on-off valves,
Connect the over 7 μ-tube from the generator to the low-pressure side equipment or the low-pressure side solution path, and connect the pipe branched from the dilute solution path from the S liquid pump to the generator [upstream of the above-mentioned self-blade martial arts closing valve O]. Connections 1 * IJit-1 from this book regarding II-type refrigeration and/or heaters that make mold In Figure 0, which is a system diagram of the system of the dual-effect absorption refrigeration and/or heating machine according to this embodiment, the symbols 1 to ! is the same as in Figure 1. 1s is a self-blade opening/closing valve, 14 and 16 are overburbs. Four-tube, 1S
and 17 are piping.

The dilute solution sent from the absorber 1 to the first generator 5 via the second heat exchanger 6 and first heat exchanger 7 by the solution pump 8 is heated by gas or oil OHM, and is condensed. , if the first heat exchanger 1171 is too much, it is sent to the second generator 4. In the second generator 4, the high-pressure steam from the first generator 3 is further heated and precondensed, and then passed through the second heat exchanger 6 and absorbed. Sprayed on container 1,
Form a solution nicle.

In the present invention, overflow pipe 1 from wE1 generator 3
4 [, self-cutting type on-off valve 15, for example, a float valve, etc., is connected to piping ISK1112 generation 1) 4, while piping 17 [, self-cutting type It is connected to the upstream side of the on-off valve 130. To explain the operation, when the above-mentioned absorption type refrigeration and/or heating machine is started, or when the cooling water temperature change is low, the first generator 5 and the second generator The pressure difference between the wc1 generator and the generator 4 is small, and for the rare supply amount from the absorber 1 to the first generator 5, wc1 generator! When the amount of solution sent from the generator 1 to the second generator 4 via the first heat exchanger 7 is small, the liquid level in the first generator 3 rises. II 1 When the 09 surface inside the generator 1 exceeds a certain height t, the f# liquid flows out a little from the over 7a to the pipe 14, passes through the self-cutting on-off valve 13, and enters the pipe 15.
It is sent to generator 4. Furthermore, from the absorber 1 to the first generator 3
Nozomi to s! A pipe 17 branched from the short path is connected to the upstream side of the self-cutting on-off valve 130, so that it is always on! Because some of the liquid is being pumped in, when the self-blade opening/closing valve 15 is fully closed,
Even if there is some leakage before and after the valve, the gas can be bypassed from the first generator 3.
Since * flows into the upstream side of the self-blade type on-off valve 1s, the problem of crystallization can also be solved. If the liquid level in the second generator 4 rises due to the solution sent from the first generator 3 to the self-cutting on-off valve 15t--too much solution, the overflow pipe 16 will drain the solution. Bypassed to absorber 1.

Incidentally, if the outflow light of the solution overflowing from the first generator 5 through the self-cutting on-off valve 13t is at a lower pressure than the first generator 3, it will be absorbed l! 1 or any solution path is acceptable from the solution pump 8 to the first generator 3.
As long as the dilute solution route reaches the inlet of

Next, as an embodiment of the present invention, an example in which the present invention is applied to a single effect will be shown. FIG. 4 attached herewith is a system diagram of a single-effect absorption refrigeration and/or heating device that is an embodiment of the present invention. In FIG. 4, the symbols 1.2.5, Lu,! and 1s
021Fi generator, 22#i mature exchanger, 23 is an overflow pipe, and 24 and 25 are piping, which are the same as in FIG.

In the case of FIG. 4 as well, according to the present invention, as is clear from the above description, the pipe 25 branching from the dilute solution path is useful for preventing crystallization. This prevents frequent starting and stopping of the OPs liquid pump, which was conventionally controlled using a liquid level switch pipe, and simplifies the control system. In addition, in the case of the present invention, the self-cutting on-off valve does not require a high degree of manufacturing precision even if there is a slight leak when it is fully closed, so it is inexpensive and safe from crystallization of the solution. It is.

[Brief explanation of the drawing]

1 and 2 are system diagrams of a conventionally known dual-effect absorption refrigeration and/or heating device. FIG. 5 is a system diagram of a double-effect absorption type refrigerating/heating machine which is an embodiment of the present invention, and FIG. This is a system diagram of a collection type refrigeration and/or heating device.

Claims (1)

[Claims] tashakuyu, evaporator, generator, #! a compressor and a heat exchanger;
In the II-type refrigeration and/or heating machine K, which is composed of the pipes connected to the refrigerant and the solution path, the overarrow pipe from the generator is connected to the low-pressure side equipment through a self-cutting shut-off valve. Or connect to the quantity pressure Confucian 11ta path and iI!
A conduit branching from the M2 *** line from the housing pump to the generator is connected to the upstream side of the self-cutting type II on-off valve.