JPS58190667A - Absorption heat pump - 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 utilizes the heat generated in winter when the refrigerant "t'" vaporized in the endothermic side of the refrigeration cycle, that is, the evaporator, is absorbed into the collected liquid (hereinafter referred to as
Improvement of an absorption heat pump that extracts heated fluid at a temperature higher than the Shimagen fluid temperature by utilizing absorbed heat (referred to as absorption heat).

This kind of absorption heat pump is different from the so-called cold-temperature reversible heat pump, which utilizes the heat radiation side of the absorption refrigeration cycle, and is a dedicated heat pump machine in which the pressure and temperature in the evaporator and absorber are changed by the condenser and generator. The regeneration condenser is operated at a higher pressure and temperature than the formed regeneration condenser, and if the condensed refrigerant introduced into the evaporator changes due to fluctuations in the temperature of the incoming cooling water, the evaporator and absorber There is a drawback that the heat output of the absorption heat pump fluctuates drastically due to large fluctuations in the pressure and temperature within C2, and if the cooling water temperature rises, the temperature of the fluid will also be high (if not, the condensed refrigerant There is also the problem that Y cannot be obtained and a predetermined heat output cannot be obtained.

In view of the above, the present invention provides a medium-temperature heat source generator that supplies a heat source fluid with a temperature higher than that of the heat source fluid in the regenerative condenser (2 low-temperature heat source generators (-heat supplied), and The amount of heat source fluid supplied to the condenser 1 is adjusted according to changes in the temperature of the cooling water flowing into the condenser 1. The purpose is to stabilize and take out a heated object at a desired temperature in a stable manner.

Hereinafter, embodiments of the present invention will be explained based on factor JH=.

Figure 1: ill is cooling water pipe (2)! Stored condenser (31 and heat source tubes (4) and 15)) j' temporarily stored low temperature heat source generator (61 and medium temperature heat source generator ( 7), (8) is an evaporator that houses a heat source tube (91), 0 (I is an absorber that is housed in a heated fluid extraction tube a111, and 113 is a solution heat exchanger). These are a condensed refrigerant liquid pipe 14J with a refrigerant pump o3v, an unevaporated refrigerant liquid t's generator +811 = circulation path 11e with a refrigerant pump uS for resupply, and a concentrated liquid pipe 1% with a solution pump 0η. The liquid flow down pipe port 9 and the intermediate liquid flow down pipe I are airtightly connected.
Each of (5) and (9) (: installed circulation pump, (24)
) is a cooling water condenser + 31 population side cooling water charge (211: equipped with 4 degree detector, 10 is a heated fluid absorber (10 outlet side heated body extraction fau), ( to)
is a controller that controls the operation of the circulation pump (2υ, @ or (21) in response to the signal from the temperature sensor @ and/or (to).

Therefore, when the cooling water temperature is low and is below the low set temperature 1tJ2, such as during the winter, the JWJ device ( 4) Activate the pump +23 via Y! Stop the pump +23 and turn on the medium temperature heat source generator (7
) Heat source fluid supply 4I-stop, low temperature heat source generator (61
A refrigerant source is generated by driving the refrigerant to obtain condensed refrigerant liquid.

Then, the rotation speed of the pump Qυ is increased or decreased according to the rise and fall C2 of the cooling water temperature, and the condensed refrigerant gk'%:! liI adjustment. Next (2 summers, etc.), if the temperature of the IM device +31 is high and exceeds the high set temperature, the signal from the temperature sensor QΦ will cause the pump 123 to be activated via the controller ((a) Y). At the same time, the pump (21) is stopped and heated at medium temperature.
Driving of the generator (7) (2) generates refrigerant vapor to obtain condensed refrigerant liquid.Then, the rotation speed χ of the pump I23 is increased or decreased according to the rise and fall of the cooling water temperature, and the condensed refrigerant tt':A* is generated. When the temperature of the inflowing cooling water is between the low set temperature and the high set temperature rz, as in the middle of spring and autumn, the controller ( The pumps +2υ and .21w are operated through the constant operation to generate refrigerant vapor sound from the low-temperature and high-temperature heat source generators f61+71 to obtain #l condensed refrigerant liquid.Then, the pump 123 is activated in accordance with the rise and fall of the cooling water temperature. Adjust the ##I refrigerant wheel in the regenerative condenser (1) by increasing or decreasing the rotation speed to increase or decrease the heat#fluid supply*yit to the medium temperature heat source generator (7).

On top of this, the temperature level of the cooling water entering the condenser (3) is When (2) heat #l'jlt body supply tyk-increase (2) refrigerant vapor generation sol increases to raise the pressure and temperature in the regeneration condenser +11, and the refrigerant vapor condensation itv approximately constant C;
When the reverse sea cooling water temperature decreases (2), the heat source fluid supply tt' decreases (2), the refrigerant vapor condensation Itt is approximately constant (: C2 can be adjusted so that the evaporator +81 (:, the condensed refrigerant liquid introduced can also be maintained almost constant C:, and even if the cooling water temperature fluctuates, the pressure and temperature inside the evaporator (81 and absorber UL) will hardly change. Therefore, stable heat output of the absorption heat pump can be obtained, and the fluid to be heated at the desired temperature can be taken out.

It is preferable to control the rotational speed Y of the pump (to) via the controller (to) based on the signal C2 of the temperature detector r5 to adjust the supply of heat source fluid to the evaporator (8).

The second factor is 1. This figure shows another embodiment of the present invention, and components similar to those shown in FIG. 1 are designated with the same figure number Y.

Figure 1 shows a case in which heat source fluids of different temperature levels of Class 5SfI can be obtained in the oral example, and Example C shown in Figure 2 shows two different types of heat source fluids.
At 0g2 factor (91 indicates the case where the heat source fluid of rK level is obtained, the M source fluid is transferred to the evaporator 181i:
, after supplying the low temperature heat source generator (61 (2C) to supply
There are two heat MA tubes stored, +27) and a heat source tube (50
This is a control valve provided with two.

Then, like summer, the cooling water temperature rises and the set temperature;
When the temperature exceeds W, the signal from the temperature detector 241 (-) increases the opening of the control valve r27 when the pump is activated via the controller ((1)!). heat #fluid supply to medium temperature heat source generator (7;
'Increase; one verse. In addition, when the cooling water temperature is sufficiently low, such as during winter, (2) the operation wQl of Gump Go 1 is output.

As described above (=, the present invention forms a regeneration condenser C2 of this type of absorption heat pump and a medium-temperature Shimabara generator Y that supplies a heat source fluid such as hot water using solar heat, and the amount of heat source fluid supplied to the generator is t%. Condenser I: The inflowing cooling water temperature χ is detected by the detector's signal cage; it is equipped with a one-control mechanism for more adjustment, so it is possible to obtain a stable heat pump heat output and maintain the desired temperature. Heated fluid can be obtained.

[Brief explanation of drawings]

1 and 112 are schematic explanatory diagrams of circuit configurations showing embodiment Y of the present invention. (1)...amphibious condenser, (3)--condenser, (6th...low-temperature heat source generator, (7)...medium-temperature heat source generator,
(8)...Evaporator, 1G...Absorber, C211, @
...Circulation pump, (to)...Temperature detector, (to)・
-Controller, 27)...Control valve.

Claims (1)

[Claims] +1) Regeneration a! formed by a low-temperature heat source generator to which heat fluid such as waste hot water is supplied, a medium-temperature heat source generator, and a condenser through which cooling water flows. condenser, evaporator to which heat source fluid such as waste hot water is supplied, and when absorbing refrigerant: heat generated (absorber and solution heat exchanger capable of extracting heated fluid whose temperature is higher than the heat source fluid temperature) A detector is connected to the condenser Cfi to measure the temperature of the cooling water, and the signal C of the detector is connected to the condenser Cfi.
2. An absorption heat pump comprising a control mechanism for supplying gap fluid to the medium temperature heat source generator.