JPS5855643A - Hot water supply device - Google Patents

Abstract

PURPOSE:To simplify the work of laying an exhaust pipe line by a method wherein in the titled hot water supply device provided with a heat pump heating device, the heating device is arranged above the upper part of a hot water storage tank and when the pressure of hot water heated within the heating device exceeds a predetermined value, the hot water is discharged by opening a safety valve. CONSTITUTION:In the hot water storage tank 101 surrounded by a heat retaining material 115, connected with a water supply pipe 102 and an exhaust pipe 112 and having a heater 107 and an anticorrosive electrode 114, the heat pump heating device 200 comprising a compressor 202, an evaporator 203, a heat exchanger 204 for heating and an expansion mechanism 205 all of which are connected togeter through an annular coolant pipe is arranged on a base plate 201. Further, the exhaust pipe 112 of the hot water storage tank 101 is connected to the heat exchanger 204 through a drain valve 108, a circulation pipe 211 and a circulation pump 210 and the water heated by the heat exchanger 204 is returned to the top of the storage tank 101 through a backward pipe 215 provided with the safety valve 216 whose outlet is connected to the drain valve 108 through the exhaust pipe 217.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a water heater equipped with a heat pump heating device, and provides a configuration that facilitates construction of an expanded water discharge pipe from a safety valve.

Conventionally, as a method for installing a safety valve, expanded water discharge, and pipes in a hot water type water heater, there are typical methods as shown in FIG. In Figure 1, 1 is a hot water tank, 2 is a water supply pipe, and 3
4 is a water supply pulp, 4 is a pressure reducing check valve, 5 is a hot water pipe, 6 is a hot water tap, 7 is an electric heater, and 8 is a drainage pulp, which are provided at the lower part of the hot water storage tank 1. Reference numeral 9 denotes a safety valve, which is provided in the hot water outlet pipe 1o provided at the top of the hot water storage tank 1, and is located above the branch point of the hot water supply pipe 6. An expanded water discharge pipe 11 is attached to the safety valve 9, and the expanded water discharge pipe 11 opens to a hopper 12 connected to the drain pulp 8. Expanded water discharge pipe 11
The opening in the hopper 12 is for opening the safety valve 9 and introducing air into the upper part of the hot water storage tank 1 when water in the hot water storage tank 1 is drained from the drainage pulp 8. As described above, in the conventional system, a hopper 12 was required between the expanded water discharge pipe 11 from the safety valve 9 and the drain pulp 8. The present invention provides a structure that does not require the hopper 12, and one embodiment thereof is shown in FIG.

It has a configuration in which a heat pump cycle heating device 200 is connected to the upper part of a hot water storage tank 1°o1, and a water supply pipe 1o2. Water supply pulp 103° pressure reducing check valve 1
04 is provided, and as a hot water supply system, a hot water outlet pipe 11o, a hot water supply pipe 105° and a hot water tap 106 are provided from the top of the hot water storage tank 1o1, and as a drainage system, a drain pipe 11 is provided from the bottom of the hot water storage tank 1o1.
2. Drain valve 1o8. A general drain pipe 113 is provided. The heater 107 and the corrosion-resistant electrode 114 are still attached to the hot water tank 10.
A heat insulating material 11 is installed in the hot water tank 1o1 to keep the hot water tank 1o1 warm.
6 is the body 116. Top plate 117. Bottom plate 118 and hot water tank 1
The space formed by 01 is filled. On the other hand, the heat pump heating device 2oo has a compressor 2o2.
Evaporator 2o3. Heating heat exchanger 2o4. The expansion mechanism 206 is connected and installed with an annular refrigerant piping conduit, and the cover 2
It is covered with 06. 207 is a fan for blowing air to the evaporator 203. A drain water discharge hole 208 is provided in the vicinity of the evaporator 203 of the substrate 201, and a drain discharge pipe 209 is connected thereto. Reference numeral 210 is a circulation pump, which transports the water in the hot water storage tank 101 to the drain pipe 11 from the lower part of the hot water storage tank 1o1.
2. Drain valve 108. Circulating vibe 211. It is sent to the heating heat exchanger 204 via the circulation pipe 212. Reference numeral 213 denotes a hot water temperature adjustment mechanism, which controls the flow rate of the hot water heated by the heating heat exchanger 204 so as to keep the temperature constant. 214 is a piping joint, 215 is a return pipe connecting the hot water outlet pipe 11o and the piping joint 214, and 216 is a safety valve attached to the piping joint 214 and provided at the top of the water piping system. 217 is an expansion water discharge pipe,
The safety valve 216 is connected to the discharge valve 108 .

In addition, a drain discharge pipe 20 is installed in the middle of this expanded water discharge pipe 217.
9 are connected.

In the above configuration, the heat pump cycle heating device 20
0 is operated, the circulation pump 210 is operated, and the water in the hot water tank 1o1 is drained from the drain pipe 112 to the drain valve 108.
Circulation pipe 211. The hot water sent to the heating heat exchanger 204 via the circulation pipe 212 and heated by the heating heat exchanger 204 is sent to the hot water temperature adjustment mechanism 213, piping joint 214. Return pipe 216
．． The hot water is returned to the top of the hot water storage tank 101 via the outlet pipe 11o.

When the temperature of the water in the hot water storage tank 101 rises, the water expands and the pressure in the hot water storage tank 1o1 increases, so the safety valve 216 automatically opens and the expanded water is discharged and flows down inside the expanded water discharge pipe 217 and drained. Valve 108. The drainage ditch (
(not shown).

Further, the condensed water generated in the evaporator 203 flows down as a drain on the substrate 201, passes through the drain water discharge hole 208 and the drain discharge pipe 209, joins the expanded water discharge pipe 217, and flows through the drain valve 108. It is led to the general drain pipe 113. Drain valve 1
08 is a drain pipe 112 and a circulation pipe 211.08 in a closed state. The expanded water discharge pipe 217 and the general drain pipe 113 communicate separately, and in the open state, the drain pipe 112, the circulation pipe 211. The expanded water discharge pipe 217° and the general drainage pipe 113 are all connected to each other.

When draining the water in the hot water tank 101, the water supply valve 10
3, open the drain valve 10B, and open the manual lever of the safety valve 216, the top of the hot water tank 101 communicates with the drain water discharge hole 208, which is open to the atmosphere, via the safety valve 216. Air is introduced to the top of the hot water storage tank 1o1, and drainage from the drain pipe 112 becomes smooth.

As mentioned above, the board 201 is placed in the middle of the expanded water discharge pipe 217.
By connecting the second drain discharge pipe 209, the drain water discharge hole 20B functions as a hopper, so there is no need to provide a special hopper 12 as shown in the conventional example. Therefore, the safety valve 216, the expansion water discharge pipe 217. Since the drain system piping of the drain drain pipe 2o9° drain valve 108 can be assembled in the factory, construction work on site is simplified.

In addition, the drain valve 108. Drain pipe 112. Circulation pump 2
1o, circulation pipe 211. Circulation pipe 212, expanded water discharge pipe 217. By piping the drain discharge pipe 209 inside the front cover 218 and inside the space between the top plate 11a of the hot water storage tank 1o1 and the substrate 201 of the heat pump cycle heating device 200, a heat retention effect can be expected.

As described above, according to the present invention, the piping work of the expanded water discharge pipe can be performed extremely easily.

[Brief explanation of drawings]

FIG. 1 is a block diagram showing a conventional example, and FIG. 2 is a block diagram showing an embodiment of the present invention. 101...Hot water tank, 108...Drainage pulp, 216...Safety valve, 217...
Expanded water discharge pipe, 202...Compressor, 2o3...
...Evaporator, 204 ...-Heating heat exchanger, 2
06... Expansion mechanism, 2o9... Drain discharge pipe. Name of agent: Patent attorney Toshio Nakao and 1 other person No. 1
figure

Claims (1)

[Claims] A heat pump cycle heating device comprising a compressor, an evaporator, a heating heat exchanger, and an expansion mechanism connected through an annular refrigerant piping line is connected to the upper part of a hot water storage tank for storing hot water obtained by the heating heat exchanger. , A safety valve is provided on the infusion port side of the heating heat exchanger, and the expanded water discharge pipe of this safety valve is connected to the drainage pulp provided at the bottom of the hot water storage tank, and the expanded water discharge pipe is connected from the heat pump cycle heating device to the middle of the expanded water discharge pipe. A water heater characterized by connecting drain discharge pipes.