JPS6291767A - Engine drive type air-conditioning hot-water supply device - 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 [Field of Industrial Application] The present invention relates to an improvement of a heating/cooling/water heating device using a heat pump (2) which is driven by a nine-engine engine.

[Conventional technology]

In recent years, with the diversification of energy sources, engine-driven heat pump type air-conditioning/heating and water heaters that use natural gas, gasoline, diesel oil, etc. as fuel have been developed in Japanese Patent Laid-Open No. 58-1t4970.
Various proposals have been made, including Japanese Patent Application Laid-Open No. 179781/1983. Fig. 3 is a configuration diagram of a conventional engine-driven heat pump type air-conditioning/heating/water heating system with three units connected as indoor units; Go between stations.

First, the compressor (21 is connected by a clutch (31) driven by the engine (1) K. The indoor unit (4)
・(5) and (6) are heat exchangers (7), (8), and
(9) and indoor controllers αti-ttll-az, and each indoor unit has communication lines α3, α-core, a
S is used to communicate with the outdoor system controller tte. Also, for outdoor units.

A refrigerant circuit constituting a refrigeration cycle is formed by providing a throttle device fin such as an expansion valve, an outdoor heat exchanger αg, etc., and connecting these sequentially with refrigerant piping, and a refrigerant circuit that constitutes a refrigeration cycle is formed. A four-way switching valve (1
Switch the refrigerant circuit at 9.

Cooling or heating is performed by using the indoor/outside heat exchangers as condensers for heat radiation or evaporators for heat absorption. In addition, the solenoid valves installed on the outdoor side
an-■・0・c! By controlling the flow of refrigerant using 4115, the heating and cooling operation of each indoor unit is controlled, and the opening/closing of the iJ solenoid valve (2) and the heat exchanger (5) perform a heat exchange hot water supply operation.

In addition, in the conventional device S described above, a hot water storage tank (to) is placed separately, and a water supply pipe (■) is connected to the bottom of the tank.
A hot water supply pipe (■) was drawn out from the top, and the structure was such that hot water could be supplied as needed from the hot water supply port 6υ. This hot water storage tank (to) is circulated and supplied to the exhaust heat recovery heat exchanger (to) attached to the exhaust pipe side of the engine/(1), thereby cooling it and cooling it. A hot water storage heat converter is installed, which forms part of a cooling water circuit that recovers waste heat. Also, this cooling water circuit has a reservoir tank (
(2) A cooling water circulation pump is provided, and the heat generated by operating the engine (1) is used to heat the water in the tank (1) and turn it into hot water, thereby making it possible to supply hot water.

A central remote control (to) consisting of a display device (to) that displays the temperature of the tank (to), an operation mode switch (9) for inputting the operation mode of the entire system, etc. is connected to the system controller αe and a communication line (to). (to), and data is sent and received.

The system controller αe determines and executes the operation based on the operation mode signal from the central remote controller (2) and the operation commands from the indoor units (7), (8), and (91).

Temperature information required for operation control is provided by temperature sensors, Qυ, and C.
3 to ensure optimal system operation. .

Also, the signal line (c), cast, connects the temperature sensor and system controller, and the signal line (c), (4η, decoy, decoy, ω,
(51) and (52) are the solenoid valves, ■, En, ■, respectively.
The cooling water circulation pump (b) is connected by a signal line (55).

[Problem that the invention seeks to solve]

By the way, in the conventional device having the above-mentioned configuration.

The hot water supply mode determined by the central remote controller (to) and the priority of the heating and cooling operation commanded by the indoor units (7), (8), and (9) are uniquely determined by the sequence within the system controller αe. Therefore, there was a problem in that the priority was fixed as either heating/cooling or hot water supply, and the user could not select or change the priority.

This invention was made to solve the above-mentioned problems, and by providing a priority determination switch,
The user can determine the operating priority of the entire system. The objective is to obtain a heat pump engine-driven air-conditioning, heating, and hot-water supply system that is inexpensive and easy to operate.

[Means for solving problems]

The engine-driven air-conditioning/heating/water supply apparatus according to the present invention is equipped with an operation mode priority determination switch and has a function of making the operation mode priority variable.

[Effect]

According to this invention, since the operating priority of the system can be determined arbitrarily, it is not limited to users in a specific range of use, and there is also the advantage that the operating priority can be changed according to external conditions such as the season. Appropriate range expansion and functional improvement of the system can be obtained.

〔Example〕

The present invention will be described in detail below using embodiments shown in the drawings.

° Fig. 2 is a configuration diagram showing an embodiment of the central remote control (to) of the engine-driven air-conditioning, heating, and hot-water supply system according to the present invention.
It is the same as or equivalent to the one shown in the figure. In the figure (55)
indicates a one-chip microcomputer, and a one-chip microcomputer is usually required within the one-chip microcomputer. (Interrupt controller that controls interrupts generated externally and internally)
a-le (56).

A timer (57) that controls time by frequency division of an external oscillator (58), and an RO that stores system programs.
An instruction decoder (59) and ALU (60) that extract instructions from M (61) and decode and execute the instructions, a RAM (62) used for storing and temporarily saving data, etc.
It has basic functions such as an input/output board (65) that performs input/output with the outside.

Hot water priority switch (64), heating priority switch (65)
.

Hot water supply switch (66) and indoor unit controller H-u・α
2 is connected to the input port of the one-chip microcomputer (55).

The operation of the present invention having the above configuration will be explained based on the operation mode determination flowchart of FIG.

When the hot water supply priority switch (64) is ON, the state of the hot water supply switch (66) is determined first, and when it is ON, hot water supply operation is determined. Hot water switch (66) OFF
At this time, the state of the heating and cooling operation command transmitted from the indoor unit controller αG·αn-a'a is checked, and if there is no command, no operation is performed. When cooling or heating operation is specified from three indoor controllers, a heating priority switch (65) is activated to determine the priority of cooling or heating operation.
status will be investigated. In the case of heating priority (heating priority switch ON), when even one of the three indoor controllers is sending a heating command.

Heating operation is determined, and when heating is not specified, cooling operation is determined. In addition, in the case of cooling priority (heating priority switch 0FF), it is checked whether there is a cooling command transmitted from the indoor controller, and if there is a cooling command, cooling operation is determined, and if there is not, heating operation is determined.

In addition, if the hot water priority switch (65) is OFF, that is, when the heating and cooling command is being sent from the indoor controller with priority given to cooling and heating, the heating priority switch (65) will send the cooling and heating commands from the indoor controller in the same way as above. Cooling operation/
Heating operation is determined. If heating and cooling is prioritized and there is no cooling or heating directive.

The state of the hot water supply switch (66) is investigated, and if it is ON, hot water supply operation is determined, and if it is OFF, it is determined that no operation is performed.

As described above, the priority order is determined for three types of operation modes (cooling operation, heating operation, hot water operation) according to the states of the hot water priority switch (64) and the heating priority switch (65).
The driving mode is determined by the driving command with higher priority.

Furthermore, the priority order of the operating modes can be changed by the user changing the states of the hot water supply priority switch and the heating priority switch according to the situation.

〔Effect of the invention〕

According to the present invention, the operation requested by the user can be easily and inexpensively performed according to the seasonal or daytime conditions by simply installing a hot water priority switch/heating priority switch and a priority operation determination subroutine. If it can be realized variably, ℃・
We can expect significant improvements in functionality.

[Brief explanation of drawings]

Fig. 1 is a configuration diagram showing an embodiment of an engine-driven air-conditioning/heating-water supply system according to the present invention, Fig. 2 is a flowchart showing the operation of the embodiment, and Fig. 3 is a diagram illustrating a conventional engine-driven air-conditioning/heating/water-heating system. FIG. In the figure, (1) is the engine, (2) is the compressor, (3) is the clutch, (4), (5), (61 is the indoor unit, (7)
1・(81・(9) is indoor heat exchanger, 01・αB・α2
is the indoor controller, α)・I・α9 is the communication link, αG is the outdoor system controller, αη is the throttle device, 08 is the outdoor heat exchanger, α9 is the four-way switching box, ■・c2Il-(c)
・No・c! (・□□□・The mother is the solenoid valve. (To) is the hot water tank, L29 is the lower water supply pipe, ■ is the upper water supply pipe, Gυ is the hot water supply port, 03 is the heat exchanger for exhaust heat recovery. (G) is the reservoir Tank, (Foundation) is a cooling water circulation pump,
c! s is the heat exchanger for hot water storage, (to) is the display device, @ is the operation mode switch, (to) is the central remote control, (to) is the communication line, (4G, false, (42 is the temperature sensor, old (44)
1・14S-(c)・Cη・(9)・9! J-ω・(5
1), (52), and (53) are signal lines, (55) is one-chip microcontroller, (5!+) is interrupt control, (57) is timer, (58) is external oscillator, (59) is instruction decoder , (60) is person L
U, (61) is ROM, (62) is RAM
, (63) is the input/output boat, (64) is the hot water priority switch, (65) is the heating priority switch, (
66) is a hot water supply switch. In addition, in FIG. 1, the same reference numerals indicate the same or corresponding parts.

Claims (1)

[Claims] The engine drives a compressor that constitutes a refrigerant circuit, and the cooling water circuit collects exhaust heat from the engine by supplying cooling water using a cooling water circulation pump and stores the heat in a hot water storage tank. In an engine-driven air-conditioning/heating/water heating system comprising an indoor unit, a central remote controller that centrally controls the indoor unit and has an input/output stage, a temperature sensor that detects the temperature of each part, and a system controller that controls these systems, the central An engine-driven air-conditioning, heating, and hot-water supply device characterized in that a priority operation mode switch is attached to a remote control unit to give priority to operation modes, and the priority can be changed.