JPS6117849A - Heat pump type water heating and hot-water supplying device - Google Patents

Abstract

PURPOSE:To permit to supply hot-water through the hot-water reserving tank of small size by arranging the hot-water reserving tank so as to surround a compressor. CONSTITUTION:The hot-water reserving tank 5 and a condenser 6, contacting with the tank 5, are arranged so as to surround the compressor 4. Heat exchange between water in the hot-water reserving tank 5 is effected in the condenser 6 and hot-water is supplied. In this case, all amount of heat, dissipated from the compressor 4, is given to the water in the tank 5, therefore, the efficiency of the device may be improved. In case the heat pump cycle of the device is re-started from the stopping condition thereof without using the hot- water to be supplied, heat is being given from the tank 5 to the compressor 4 during stopping the compressor 4 since the environment of the compressor 4 is insulated by a heat insulating member 7 surrounding the tank 5. Accordingly, the temperature of the compressor will never be reduced even during stopping the compressor 4.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to an apparatus for supplying hot water using a heat pump cycle.

Conventional Structure and Problems Conventionally, as shown in FIG. 1, this type of hot water supply system has an evaporator 2, a pressure reducing device 3, a hot water storage tank 5, and a heat exchanger 6 in contact with the main body 1. , above the compressor 4 , or separately arranged. Then, the temperature of the water in the hot water storage tank is increased by condensing heat exchange of the refrigerant, and high temperature hot water is supplied.

However, in this structure, the condensing pressure and temperature rise are slow due to the characteristics of the heat pump cycle.
There was a problem in that it took a considerable amount of time for the water temperature to rise upon startup. In addition, some hot water storage systems have been developed to solve this problem, but since the start-up of the heat pump cycle is slow, it is necessary to store the necessary hot water until the cycle becomes steady, so a large hot water storage tank is required. There was a problem that not only was this necessary, but power consumption also increased.

Purpose of the Invention The present invention solves the above-mentioned conventional problems, and aims to improve the start-up time 9 of the heat pump cycle, enable hot water supply with a small hot water storage tank, and reduce power consumption. It is.

Structure of the Invention In order to achieve this object, the present invention has a hot water storage tank arranged to surround a compressor.

This i-formation improves the start-up of the heat pump cycle, making it possible to supply hot water with a small hot water storage tank.

DESCRIPTION OF EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. 2 and 3.

In FIG. 2, reference numeral 1 denotes a heat pump water heater main body (hereinafter simply referred to as the main body), in which an evaporator 2, a pressure reducing device 3, a compressor 4, a hot water storage tank 5, and a condenser 6 are provided. A heat insulating material 7 is provided to cover the compressor 4, the hot water storage tank 5, and the condenser 6.

FIG. 3 shows the compressor 4, the hot water storage tank 5, and the condenser 6.
K if is seen from above, surrounding the compressor 4.
A hot water storage tank and a condenser 6 in contact with it are arranged.

In the above configuration, normally the condenser 6 exchanges heat with the water in the hot water storage tank 5 to supply hot water. In this case, all of the heat radiated from the compressor 4 is given to the water in the hot water storage tank 5, resulting in good efficiency.

Next, a case will be described in which the heat pump cycle is restarted from a stopped state when hot water is not being used. #'i
The pressure line compressor 4 is arranged so as to surround the hot water storage tank 5, and the surrounding area is insulated with heat insulation vJ'7, so when the compressor 4 is stopped, the hot water storage tank 5 is Heat is given to the machine. Therefore, the temperature of the compressor does not drop even when the compressor is stopped.

Therefore, when the shell of the compressor waiting to start is cold, the amount of heat necessary to warm it is stolen from the refrigerant, but when the temperature of the compressor is high, the heat capacity of the shell Since this loss is eliminated at the time of rising, the lily will rise faster than before.

FIG. 4 shows the start-up time from a cold compressor state and the start-up time from a high compressor temperature state.

The solid line shows the case of the compressor of the present invention, and the broken line shows the case of the conventional compressor.

Therefore, less hot water is required during the start-up time, and the hot water storage tank is also smaller.

In this embodiment, the hot water storage tank 5 is arranged to surround the entire circumference of the compressor 4, but if the configuration is such that the heat from the hot water storage tank 5 is given to the compressor 4,
Similar effects can be obtained with other configurations.

Effects of the Invention As described above, the present invention improves the start-up of the heat pump cycle by arranging the hot water storage tank so as to surround the compressor, making it possible to supply hot water with a small hot water storage tank and reducing power consumption. be able to.

[Brief explanation of drawings]

Fig. 1 is a longitudinal cross-sectional view of a heat pump type hot water supply apparatus showing a conventional example, Fig. 2 is a longitudinal cross-sectional view of a heat pump type hot water supply apparatus according to an embodiment of the present invention, and Fig. 3 is a longitudinal cross-sectional view of the heat pump type hot water supply apparatus according to an embodiment of the present invention. compressor. FIG. 4 is a plan view showing the arrangement of the hot water storage unit and the condenser, and a characteristic diagram showing the difference in the rise of the condensing temperature between the conventional example and the present example. 1. Main body, 2. Evaporator, 3. Pressure reducing device,
' 4 ・Compressor, 5 ・Hot water storage tank, 6... Condenser. Figure 1

Claims (1)

[Claims] A heat pump type hot water supply device is configured by providing a hot water storage tank that performs contact heat exchange with the condenser in a main body equipped with a heat pump cycle consisting of a compressor, a condenser, a pressure reducing device, and an evaporator; A heat pump hot water supply device in which a hot water storage tank is arranged to surround the compressor.