JPS5851237A - Compression type heat pump - Google Patents

Abstract

PURPOSE:To permit supplying constant temperature hot-water of a constant volume by a method wherein the revolving number of an engine is changed based on the detecting information of the temperature of supplying hot-water, in the heat pump heating water for supplying the hot-water by a condenser provided at the downstream of a compressor driven by the engine. CONSTITUTION:A cooling unit 8 for indoor is consisting of the compression type heat pump 7 driven by the engine 6, and the water for supplying hot-water, circulating in a flow path 5, is heated by a heat emitting unit 9 consisting of the condenser 13 at the downstream of the compressor 12 in the heat pump 7, the heat emitting unit 10 for cooling the engine 6 and the heat emitting unit 11 of the exhaust gas of the engine. An automatic control unit 21, increasing and decreasing the supplying amount of fuel from a fuel supplying unit 23 for the engine based on the detecting value from a hot-water temperature detecting unit 20 within the range of a set temperature preset by a hot water temperature setter 19, is provided in the system while the desired purpose may be achieved by changing the heat exchanging capacities of said heat emitting units 9-11 by adjusting the revolving number of the engine 6.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention provides a 1111! installed downstream of a compressor driven by an engine. Regarding a compression heat pump configured to heat water for hot water supply in a compressor, it is possible to quantitatively supply hot water at a constant temperature by simple control, regardless of changes in the temperature of the hot water supply water or changes in the outside temperature. purpose.

Next, embodiments of the present invention will be described in detail based on illustrative drawings.

To configure the hot water supply and cooling system, a water supply pipe (2) is connected to the lower side of the hot water storage tank (1), and a faucet (3) is connected to the upper side of the hot water storage tank (1).
) is connected to the hot water supply pipe (4), and a flow path (5) for circulating the hot water supply water in the hot water storage tank (1) from the lower side to the upper side by the pump fPl is connected.

A compression heat pump (7) driven by the engine (6) constitutes an indoor cooling device (8), and a heat dissipation section (
9) and a heat radiation part α for cooling the engine (6).
C1 and a heat dissipation part (
11J to heat the hot water supply water circulating through the flow path (5).

The compression heat pump (7) includes a compressor +12 for pumping the heat transfer medium, and a clutch (
12a) interlockingly connects the engine (6),
a condenser (which cools the heat transfer medium from the compressor (12) by heat exchange with the hot water supply water in the flow path (5);
13 to form a heat radiating section (9) that heats water for hot water supply with the heat of condensation, and vaporizes the heat transfer medium from the condenser (13) through the expansion valve (141 and evaporator f15). After that, the compressor (I21) is circulated to the evaporator (151).
Indoor '9! A fan (te) is installed to circulate and blow air.
This is to configure a cooling device (8).

The heat dissipation section (IG) for cooling the engine is a flow path (51K) for directing cooling water in the quarter jacket of the engine (6).
Pump (P) to the internal heat exchanger (171),
The temperature of the hot water supply water is raised by heat exchange with the hot water supply water, and the cooling water after the heat exchange is circulated through the quarter jacket.
) connects the engine exhaust gas to the flow path (5) through the internal heat exchanger (
181 to raise the temperature of the water for hot water supply, and also to dissipate the exhaust gas after heat exchange into the atmosphere.

In the hot water supply cooling device having the above configuration, the hot water temperature setting device 11!1 sets the temperature of hot water supply water from the hot water storage tank fi+.
, and a hot water supply temperature detection device (4) for detecting the hot water supply temperature, and based on the temperature detection information from the hot water supply temperature detection device (201), the detected temperature value is determined by the setting device (1).
The amount of fuel supplied from the fuel supply device 173 to the engine (6) is throttled and controlled based on the information that the set temperature range has been cleared by 9, and based on the information that the temperature has fallen below the set temperature range. ) of an automatic control device that controls an increase in the amount of fuel supplied to the engine (6), and by controlling the amount of fuel supplied to the engine (6) and adjusting the engine rotation speed, one song of the heat radiating section (9), (the heat exchange capacity in the ID) is provided. This makes it possible to quantitatively supply hot water while maintaining the hot water temperature within a set temperature range.

FIGS. 2 and 8 show modified examples of the hot water supply and cooling device.

In the example structure shown in FIG. 2, the fan 161 for the evaporator u9 is of a variable capacity type whose rotation speed can be adjusted, and the automatic control device (21) controls the amount of fuel supplied. Accordingly, the rotation speed is reversibly lowered, and the one shown in FIG. It is a variable capacity type, and the amount of heat source water is reversibly throttled and controlled in accordance with the throttle control of the amount of fuel supplied by the automatic control device QB, and in both cases, the heat dissipation part is controlled by controlling the engine rotation speed. +91, (1[1, In addition to changing the heat exchange capacity of 1111, control is also performed to change the calorific value of condensation heat in heat exchanger G3.

In addition, the compression heat pump (7) may be configured as a type that can switch between heating and cooling.

In summary, the present invention provides the above-mentioned compression heat pump with a device for detecting the temperature of hot water, and
In order to maintain the hot water supply temperature within a set temperature range based on the information from the hot water temperature detection device (2), a device (21J) is provided to automatically control the amount of fuel supplied to the compressor driving engine (6). Features.

That is, as described in detail in the embodiment, by simple control of changing the rotation speed of the engine (6) based on the detected information of the hot water temperature, regardless of changes in the outside temperature or the temperature of the water supplied for hot water supply, It is now possible to supply hot water at a constant temperature according to the settings.

To perform constant-temperature hot water supply in this way, for example, as shown in Fig. 4, the amount of hot water supplied is controlled based on the information from the hot water temperature detection 2 to maintain the hot water temperature within a set range.
A possible method is to interpose the valve M in the hot water supply pipe (4), but
In this case, it is not possible to fulfill the desire of fixed-quantity hot water supply.

However, by controlling the heat exchange capacity by changing the engine speed as in the present invention, it has become possible to quantitatively supply hot water at a constant temperature as desired.

[Brief explanation of the drawing]

The drawings illustrate embodiments of the compression heat pump according to the present invention, FIG. 1 is a system diagram of the Ubi-Umo air conditioner, FIGS. 2 and 3 are system diagrams of modified examples, and FIG. 4 is a system diagram of the present invention. FIG. (6)...Engine, f12)...Compressor, 1131...Condenser, (1...Evaporator, (1 mountain...)・・Fan, ■・
...Hot water temperature detection device, Qt...Automatic control device.

Claims (1)

[Claims] ■ A compression heat pump configured to heat water for hot water supply in an II compressor f131 provided downstream of a compressor @ driven by an engine (6), and a device for detecting the temperature of hot water supply. (2A), and a device (2) that automatically controls the amount of fuel supplied to the compressor driving engine (61) in order to maintain the hot water temperature within the set temperature range based on the information from the hot water temperature detection device (2). A compression heat pump characterized by π. ■ The automatic control device (2) is configured to simultaneously control the rotational speed of an evaporator (fan 19 + 15) provided upstream of the compressor rib. The compression heat pump according to claim 0, characterized in that the automatic control device (company) includes an evaporator ( 15. The compression heat pump according to claim 0, wherein the compression heat pump is configured to simultaneously control the flow rate of heat exchange water to the heat exchange water.