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Heat pump hot-water supply device

A heat pump hot water and supply machine technology, used in water heaters, fluid heaters, lighting and heating equipment, etc., can solve the problems of freezing water cooling heat exchangers and water circulation paths, damage, etc., to prevent energy consumption Efficiency reduction, high-efficiency operation, damage prevention effect

Inactive Publication Date: 2012-11-14
SHARP KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0013] However, when the temperature of the cooling medium flowing from the water heating heat exchanger to the water cooling heat exchanger via the expander is so low that the water flowing from the hot water storage tank into the water heat exchanger is In the case of freezing due to heat exchange, the water flowing into the water-cooling heat exchanger may freeze and damage the water-cooling heat exchanger and water flow paths, etc.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0124] here, image 3It is a figure which shows the other structural example of the said expander 15, Figure 4 It is a flowchart for explaining another example of the above-mentioned cooling medium flow adjustment process.

[0125] In the present embodiment described above, the case of using the expander 15 capable of controlling the presence or absence and the amount of inflow of the cooling medium into the water-cooling heat exchanger 5 has been described as an example. In this embodiment 1, if image 3 As shown, instead of the expander 15, there is a solenoid valve 15b for adjusting the inflow of the cooling medium from the water heating heat exchanger 3 to the water cooling heat exchanger 5, and how the solenoid valve 15b is adjusted. The capillary tube 15a in which the cooling medium that flows into the water-cooling heat exchanger 5 expands. In addition, the above-mentioned capillary tube 15a uses a capillary tube whose tube inner diameter and length are set so that ...

Embodiment 2

[0131] In the above-mentioned embodiment, the structure adopting the method of adjusting the distribution amount of the cooling medium to the cooling medium circuit 1a and the cooling medium circuit 1b of the cooling medium circuit 1, that is, to the water cooling heat is explained. The temperature of the water flowing into the water-heating heat exchanger 3 is adjusted by the presence or absence and the amount of inflow of the cooling medium into the exchanger 5 .

[0132] In Example 2, another method of adjusting the temperature of the water flowing into the water-heating heat exchanger 3 will be described. here, Figure 5 It is a block diagram showing the schematic configuration of the heat pump hot water supplier X2 according to the second embodiment of the present invention, Image 6 It is a flowchart explaining an example of the procedure of the water flow rate adjustment process performed in the said heat pump hot water supply apparatus X2. In addition, in Figure 5 ...

Embodiment 3

[0149] In the structure in which the outdoor air heat exchanger 14 and the water cooling heat exchanger 5 are connected in series, the inflow of the cooling medium to the outdoor air heat exchanger 14 and the water cooling heat exchanger 5 can be independently controlled. presence and inflow.

[0150] Specifically, it is conceivable to have a configuration including: a cooling medium path through which the water-cooling heat exchanger 5 flows into the outdoor air heat exchanger 14; and a bypass path that bypasses the water-cooling heat exchanger 5 and flows into To the above-mentioned outdoor air heat exchanger 14; a distributor that distributes the cooling medium discharged from the above-mentioned water heating heat exchanger 3 to each of the above-mentioned paths. Moreover, the distribution amount of the said cooling medium by the said distributor is controlled by the said control part.

[0151] According to such a structure, by adjusting the distribution amount of the coo...

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Abstract

A heat pump hot-water supply device includes a water-cooling heat exchanger in which water flowing into water-heating heat exchanger for heating the water by performing heat exchange between a coolant and water is cooled by a heat exchanger with a coolant in advance. It is possible to prevent freezing of water in the water-cooling heat exchanger. The heat pump hot-water supply device includes a coolant temperature sensor (13) for detecting the temperature of the coolant discharged from a water-heating heat exchanger (3); and water-cooling heat exchanger (5) performing heat exchange between a coolant flowing from an expansion device (15) toward a compressor (11) and water supplied from a hot-water tank (4). According to the temperature of the coolant detected by the coolant temperature sensor (13), the flow rate of the coolant into the water-cooling heat exchanger (5) is adjusted. For example, when the temperature detected by the coolant temperature sensor (13) is below a predeterminedtemperature, the expansion device (15) is closed.

Description

technical field [0001] The present invention relates to a heat pump hot water supply machine that heats water to supply hot water by exchanging heat with a cooling medium circulating in a cooling medium circulation path provided with a compressor, an expander, etc. The technique for improving the energy consumption efficiency (COP) of this heat pump hot water supply machine. Background technique [0002] In general, there is known a heat pump hot water supply apparatus including a water heating heat exchanger (equivalent to In the first water heat exchanger), the hot water heated by the water heating heat exchanger is stored in the hot water storage container, and the hot water in the hot water storage container is supplied as necessary. In addition, high-temperature hot water heated by the heat exchanger for heating water is stacked on the upper layer in the hot water storage container, and low-temperature water supplied from a water pipe is stacked on the lower layer. Th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F24H1/00F24H1/18
Inventor 柴田悦雄
Owner SHARP KK