JP2009097797A - Heat pump hot water supply system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To solve a problem that water piping might freeze when a heat pump unit is not operated because information of outside air temperature can not be obtained if a power source of the heat pump unit is blocked at a hot-water storage tank unit side for reducing standby electricity. <P>SOLUTION: The outside air temperature is stored by a second electronic control device contained in a hot-water storage tank unit based on date information. After the power source to the heat pump is blocked, the outside air temperature is estimated, which blocks unnecessary power source to the heat pump unit and can reduce the standby electricity. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a heat pump unit having a compressor, a heat exchanger for hot water supply, an expansion valve, an evaporator, an outside air temperature sensor, and an electronic control device for controlling the compressor, the expansion valve, etc., a hot water tank, and a fluid circulation pump A heat pump hot water supply apparatus comprising a hot water storage tank unit having an electronic control unit for controlling a hot water supply heat exchanger, a fluid circulation pump, and the like, wherein the power of the heat pump unit is supplied through the hot water storage tank unit. Based on the date information recognized by the second electronic control unit, the outside air temperature during operation of the heat pump unit is stored only in winter, and the hot water storage tank unit has after the power supply to the heat pump is shut off The present invention relates to estimating the outside air temperature with the electronic control unit 2.

  In the prior art, the power to the heat pump unit is always supplied, so that the outside air temperature can always be transmitted from the electronic control unit of the heat pump to the hot water storage tank unit. (For example, refer to Patent Document 1).

FIG. 4 is a configuration diagram of conventional operation control, and FIG. 3 is a flowchart of the operation. When power is turned on to the electronic control device 30 of the heat pump unit, outside temperature information is acquired unless the power to the heat pump unit is cut off. It is possible to do this.
JP 2003-222413 A

  However, in the conventional configuration, when the power supply of the heat pump unit is shut off on the hot water storage tank unit side, there is no means for acquiring information on the outside air temperature, and the water piping may freeze if the outside air temperature is low. There was a problem. The present invention solves the above-mentioned conventional problem, and stores the outside air temperature during operation of the heat pump unit heat pump unit, and estimates the outside air temperature with the second electronic control unit possessed by the hot water storage tank unit. Therefore, it is possible to cut off the power to unnecessary heat pump units, and to reduce standby power.

  In order to solve the above-mentioned conventional problems, the heat pump unit type hot water supply apparatus of the present invention is an electronic control that controls a compressor, a heat exchanger for hot water supply, an expansion valve, an evaporator, an outside air temperature sensor, a compressor, an expansion valve, and the like. A heat pump unit having a device and a hot water storage tank unit having an electronic control device for controlling a hot water tank, a fluid circulation pump, a heat exchanger for hot water supply, a fluid circulation pump, etc., and the power source of the heat pump unit is a hot water tank unit In the heat pump hot water supply apparatus supplied via the heat pump unit, the outdoor air temperature during operation of the heat pump unit is stored only in winter based on the date information recognized by the second electronic control unit, and the hot water storage tank unit is provided. The outside electronic temperature is estimated by the second electronic control unit.

  As a result, it is possible to cut off the power supply to unnecessary heat pump units and reduce standby power.

  The heat pump unit type hot water supply apparatus of the present invention can cut off unnecessary power to the heat pump unit and reduce standby power by estimating the outside air temperature only by the electronic controller of the hot water storage tank unit.

  A first invention includes a heat pump unit having a compressor, a hot water heat exchanger, an expansion valve, an evaporator, an outside air temperature sensor, and an electronic control device for controlling the compressor, the expansion valve, and the like, and a hot water storage tank A hot water storage tank unit having an electronic control unit for controlling the fluid circulation pump, the hot water heat exchanger, the fluid circulation pump, etc., and the heat pump hot water is supplied via the hot water storage tank unit. In the apparatus, the second electronic control unit which the outdoor temperature during operation of the heat pump unit is stored only in winter based on the date information recognized by the second electronic control unit, and the hot water storage tank unit has Thus, by estimating the outside air temperature, unnecessary power to the heat pump unit can be shut off, and standby power can be reduced.

(Embodiment 1)
1 and 2 show a heat pump water heater and operation control in Embodiment 1 of the present invention.

  In FIG. 1, a heat pump hot water supply apparatus includes an inverter compressor 11, a hot water supply heat exchanger 12, a decompression device 13, and an evaporator 14 connected in a ring shape through a refrigerant pipe 15, and a hot water supply cycle. A hot water tank 16 for storing liquid, a liquid pipe 18 through which the liquid in the hot water tank can circulate through the hot water supply device, a fluid circulation pump 17 for circulating the liquid in the hot water tank through the liquid pipe, and an AC power source 32 An electronic control device 31 of the tank that receives the supply, an electronic control device 30 of the heat pump unit that receives power supply from the electronic control device of the tank via the power line 34, and an outside air temperature sensor 33 that is connected to the electronic control device 30 in the previous period. More outside temperature information can be acquired.

    Next, the operation of this embodiment will be described. 2 detects the value of the outside air temperature sensor 33 by the outside air temperature detection 41 when power is supplied to the electronic control unit 30 of the heat pump unit with the configuration of FIG. The value of the outside air temperature is obtained by the outside air temperature information acquisition 44 on the hot water storage tank unit side, and the value of the outside air temperature sensor 33 is stored in the outside air temperature average value storage means 48 on the hot water tank unit side based on the date information. Thereafter, after the power supply to the heat pump unit is cut off, the electronic control device 31 of the hot water storage unit calculates the outside air temperature by the outside air temperature information estimation 47 based on the outside air temperature average value storage means 48 instead of the outside air temperature information acquisition 44. presume. When the estimated temperature value of the outside air is low, it is possible to prevent the water pipe from freezing by performing an operation instruction to the heat pump unit by the operation instruction creation 45 and operating the heat pump unit. Therefore, standby power can be reduced by eliminating unnecessary power supply without impairing the function of the heat pump hot water supply device such as freezing of water piping.

Configuration block diagram of a system in Embodiment 1 of the present invention Flowchart of algorithm in Embodiment 1 of the present invention Conventional system configuration block diagram Conventional algorithm flow chart

Explanation of symbols

11 Inverter compressor 12 Hot water heat exchanger 13 Pressure reducing device (electromagnetic expansion valve)
14 Evaporator
DESCRIPTION OF SYMBOLS 15 Refrigerant piping 16 Hot water storage tank 17 Fluid circulation pump 18 Liquid piping 19 Fan 20 Fan motor 30 Electronic controller of heat pump unit 31 Electronic controller of tank 32 AC power supply 33 Outside temperature sensor 34 Power supply line

Claims (1)

A heat pump unit having a compressor, a hot water heat exchanger, an expansion valve, an evaporator, an outside air temperature sensor, and a first electronic control unit for controlling the compressor, the expansion valve, etc., a hot water storage tank, and a fluid circulation A heat pump hot water supply comprising a hot water storage tank unit having a second electronic control unit for controlling the pump, the hot water heat exchanger, the fluid circulation pump, and the like, and the power of the heat pump unit is supplied via the hot water storage tank unit In the apparatus, based on the date information recognized by the second electronic control unit, the outside air temperature during operation of the heat pump unit is stored only in winter, and the hot water storage tank unit has after the power supply to the heat pump is shut off A heat pump hot water supply device, wherein the second electronic control device estimates an outside air temperature.

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