JP2002257383A - Hot water supply tank and air conditioning device having the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a hot water supply tank to suppress radiation of steam and a smell from the internal part of the hot water supply tank and formed that a foreign matter hardly enters from an external part, and to provide an air conditioning device having the hot water supply tank. SOLUTION: In the hot water supply tank 34 provided with a hot water supply tank body 34A to store hot water at an internal part and at the upper part of the hot water supply tank body 34A with a ventilation device 65, the ventilation device 65 is provided at the hot water supply tank body 34A with a capillary-form ventilation pipe 65A to intercommunicate the internal part and the external part of the body 34A. A trap 66 is formed at the ventilation pipe 65A and the ventilation pipe 65A is formed such that a discharge port 67 of the tip part on the outside of the hot water supply tank body 34A is opened with upside down.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hot water tank and an air conditioner provided with the hot water tank, and more particularly to a ventilating device for the hot water tank.

[0002]

2. Description of the Related Art Generally, a heat source side unit having a compressor and a heat source side heat exchanger, a use side unit having a use side heat exchanger, an ice heat storage unit having an ice heat storage heat exchanger, 2. Description of the Related Art There is known an air conditioner in which a hot water supply unit having a hot water supply heat exchanger is connected by a refrigerant pipe and a hot water supply tank is provided. In this type, heat is stored for hot water supply using a hot water supply unit and an ice heat storage unit, and hot water is generated from the heat storage.

[0003] A ventilating device is provided in the upper part of the hot water tank for the purpose of discharging the internal air at the time of supplying water and discharging the expanded air at the time of increasing the water temperature. Conventionally, as a ventilation device, as shown in FIG. 8, it is attached to the exterior plate of the hot-water tank main body by protruding, and a vent pipe having a tip opened downward, or as shown in FIG. A chimney with an umbrella is known.

[0004]

By the way, in the above-mentioned conventional ventilating device, the steam is directly discharged to the outside. Therefore, especially when the outside air temperature is low or when the amount of discharged steam is large, the discharge port at the tip is used. Vapor rises from the surface, which is not preferable in appearance.

[0005] Further, inside the hot water supply tank, the material or the like constituting the tank may become odor and stay in the air layer in the tank, and this odor leaks to the outside, causing discomfort to surrounding people. There was a problem.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned conventional problems. The present invention suppresses the emission of water vapor and odor from the inside of a hot water supply tank and prevents foreign substances from entering from outside. An object is to provide an air conditioner including a tank.

[0007]

Means for Solving the Problems In order to achieve the above object, the invention according to claim 1 comprises a hot water tank main body for storing hot water therein, and a ventilating device above the hot water tank main body. In the hot water tank, the ventilating device is characterized in that a capillary-shaped ventilation pipe that connects the inside and the outside of the main body is attached to the hot-water tank main body, and a trap portion is formed in the capillary-shaped ventilation pipe.

According to a second aspect of the present invention, in the hot water tank according to the first aspect, the capillary-shaped ventilation pipe has a downward opening at a distal end portion of the outside of the hot water tank main body.

According to a third aspect of the present invention, in the hot water supply tank according to the first or second aspect, the capillary-shaped ventilation pipe is formed of a member having good thermal conductivity.

According to a fourth aspect of the present invention, in the hot water supply tank according to any one of the first to third aspects, the ventilating device is constituted by a plurality of capillary vent pipes.

According to a fifth aspect of the present invention, there is provided a heat storage unit including a compressor and a heat source side heat exchanger, a usage side unit including a usage side heat exchanger, and a heat storage unit including a heat storage heat exchanger. An air conditioner with a hot water supply tank that can store heat for hot water supply using the hot water supply unit and the heat storage unit by connecting the unit and a hot water supply unit provided with a heat exchanger for hot water supply using a refrigerant pipe. In the apparatus, the hot water tank has a hot water tank body for storing hot water therein, and a ventilating device at an upper portion of the hot water tank body, and the ventilating device has a capillary shape communicating the inside and the outside of the main body with the hot water tank body. And a trap portion is formed in the capillary-shaped ventilation pipe.

According to a sixth aspect of the present invention, in the air conditioner provided with the hot water tank according to the fifth aspect, the capillary-shaped ventilation pipe has a downward opening at a tip end outside the hot water tank main body. Features.

According to a seventh aspect of the present invention, in the air conditioner provided with the hot water supply tank according to the fifth or sixth aspect, the capillary-shaped ventilation pipe is formed of a member having good heat conductivity. And

According to an eighth aspect of the present invention, there is provided an air conditioner having the hot water tank according to any one of the fifth to seventh aspects,
The ventilation device is characterized by comprising a plurality of capillary ventilation tubes.

[0015]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a refrigerant circuit diagram according to one embodiment of the present invention. In FIG. 1, reference numeral 1 denotes an outdoor unit (heat source side unit). The outdoor unit 1 includes a compressor 2
, A four-way valve 3 and an air-cooled outdoor heat exchanger (heat source side heat exchanger) 4 that performs a heat exchange action by an outdoor fan (not shown)
, An outdoor expansion valve 5, a liquid receiver 6, and a gas-liquid separation device 7, which are connected by piping.

Numeral 8 denotes a liquid pipe 10 constituting a pipe 9 between the units.
Reference numeral 11 denotes a gas-side connection port connected to a gas pipe 12 constituting the unit-to-unit piping 9. Reference numeral 12 denotes a discharge dedicated port, which is connected to a discharge dedicated pipe 13 branched from a discharge pipe of the compressor 2. Reference numeral 14 denotes a dedicated suction port, which is connected to a dedicated suction pipe 15 branched from a suction pipe of the compressor 2. In this way, the ejection dedicated port 12
(Discharge dedicated pipe 13) and suction dedicated port 14 (suction dedicated pipe 15) are connected to the liquid pipe 10 and the gas pipe 12 constituting the unit-to-unit pipe 9 and are connected to the liquid and gas side connection ports 8.
11 is provided separately.

An indoor unit (use side unit) 16, an ice heat storage unit 19 and a hot water supply unit 28 are connected to the outdoor unit 1.

The indoor unit 16 includes an indoor heat exchanger 17
And an indoor expansion valve 18. The ice heat storage unit 19 has a built-in heat exchanger 20 for ice heat storage and has first to third connection ends. The first connection end 21 is connected to a first on-off valve 22 and a check valve. The second connection end 24 is connected to a second on-off valve 25 via the
, And the third connection end 26 is connected to the ice heat storage heat exchanger 20 via a heat storage side expansion valve 27.

The first connection end 21 is connected to the discharge port 12 of the outdoor unit 1 and communicates with the discharge pipe 15. The second connection end 24 is a dedicated suction port 1 of the outdoor unit 1.
4 and communicates with a dedicated suction pipe 15. Third
The connection end 26 is connected to the liquid pipe 10 of the inter-unit pipe 9.

The hot water supply unit 28 includes a heat exchanger 2 for hot water supply.
9 is built in, has an inlet end 30 and an outlet end 31,
The inlet end 30 is connected to a hot water supply heat exchanger 29 via an on-off valve 32 and a check valve 33, and the outlet end 31 is connected to the hot water supply heat exchanger 29, respectively. In addition, the entrance end 30 is the outdoor unit 1
And is connected to a dedicated discharge pipe 13. The outlet end 31 is connected to the liquid pipe 10 of the inter-unit pipe 9.

Reference numeral 34 denotes a hot water supply unit 2 via a pump 35.
The hot water tank connected to 8 stores hot water heated by the hot water supply heat exchanger 29. Reference numeral 36 denotes a tap which is connected to the hot water tank 34 via a pump 37.

In the air conditioning apparatus having such a configuration, the hot water heat storage operation for hot water supply uses the ice heat storage unit 19 and the hot water supply unit 28, or uses the hot water supply unit 28 and the outdoor unit 1 to perform the following. It is performed as follows.

In the case of using the ice heat storage unit 19 and the hot water supply unit 28, the refrigerant discharged from the compressor 2 receives the check valve 38 and the open / close valve 32 of the hot water supply unit 28 as shown by solid arrows in FIG. , Check valve 33, hot water supply heat exchanger 29,
The heat storage side expansion valve 27 of the ice heat storage unit 19, the heat storage heat exchanger 20, the second opening / closing valve 25 of the ice heat storage unit 19, the gas-liquid separator 7, and the compressor 2 are repeatedly circulated back.

Thus, the hot water supply heat exchanger 29 functions as a condenser and the ice heat storage heat exchanger 20 functions as an evaporator. The ice heat generated by the ice heat exchanger 20 is stored as it is, and the hot water heated by the hot water heat exchanger 29 is supplied to the hot water tank 3.
4 and hot water heat storage is performed.

In the case of using the hot water supply unit 28 and the outdoor unit 1, the refrigerant discharged from the compressor 2 is as shown in FIG.
The check valve 38 and the hot water supply unit 2
8, open / close valve 32, check valve 33, hot water supply heat exchanger 29, liquid receiver 6 of outdoor unit 1, outdoor expansion valve 5, outdoor heat exchanger 4, four-way valve 3, gas-liquid separator 7, compression It circulates repeatedly to return to machine 2.

As a result, the hot water supply heat exchanger 29 functions as a condenser and the outdoor heat exchanger 4 functions as an evaporator, and the hot water heated by the hot water supply heat exchanger 29 is sent to the hot water supply tank 34.
Hot water storage is performed.

Next, the hot water tank will be described with reference to FIG.

In the hot water supply tank 34, the pump 37 (FIG. 1)
Outlet pipe 41 leading to the pump and the pump 35 (FIG. 1)
Hot water pipe 42 connected to hot water supply heat exchanger 29 through
A hot water pipe 43 for returning hot water heated by the hot water supply heat exchanger 29 to the hot water tank 34 and a water supply pipe 44 are provided, and a water supply valve 51 is attached to the water supply pipe 44. Further, a water level sensor 52 and a water temperature thermistor 53 are arranged in the hot water supply tank 34.

At the time of supplying water to the hot water tank 34, the initial level of hot water stored in the hot water tank 34 is determined by a water level sensor 52 provided in the hot water tank 34, and the water supply valve 51 is opened. Next, it is determined whether or not a predetermined water level has been reached. If the predetermined water level has been reached, the water supply valve 51 is closed to stop water supply. The controller related to water supply to the hot water supply tank 34 is controlled by a controller (not shown).

FIG. 4 is an explanatory perspective view showing a ventilating device for a hot water tank according to one embodiment of the present invention, and FIG. 5 is an explanatory diagram showing a part of the hot water tank shown in FIG. And FIG.
The shape of the ventilation tube is slightly different).

4 and 5, the hot water tank main body 34A
Is composed of an inner box 61 and an outer box 62 made of FRP (glass fiber reinforced plastic) and a heat insulating material 63 filled therebetween. In the hot water tank main body 34A, water or hot water is stored with an air layer at the top. On the upper side surface in the hot water tank main body 34A, there is provided a ventilation pipe mounting portion 64 for communicating the inside of the hot water tank 34 with the outside.

Reference numeral 65 denotes a ventilating device 65 provided on the upper part of the hot water tank main body 34A. The venting device 65 is made of, for example, a copper tube having a capillary shape (about 6 mm in inner diameter), is formed in a spiral shape, and is trapped. A ventilation tube 65A having a portion 66 is provided. And one end of the hot water tank main body 34A
It is connected from the outside to the ventilation pipe attachment part 64, and the other end (hereinafter referred to as a discharge port) 67 is opened downward.

In the hot water tank 34 constructed as described above, when water is supplied to the hot water tank 34, the air in the internal air layer passes through the ventilation pipe mounting portion 64 and is discharged to the outside through the ventilation pipe 65A. You. Also, hot water is generated in the hot water tank 34,
When water vapor is generated, the water vapor is passed through the vent pipe mounting portion 64.
And flows into the ventilation pipe 65A. Water vapor vent pipe 65
When passing through A, the steam is cooled and condensed to form condensed water, which is stored in a trap section 66.

As described above, since the ventilation pipe 65A is formed of a member having good thermal conductivity, when the water vapor passes through the ventilation pipe 65A, the water vapor is easily cooled by the outside air and condenses to form water. There is little rise of steam from 67. In particular, when the outside air temperature is low, water vapor is easily condensed in the ventilation pipe 65A, and the appearance does not deteriorate due to the rising of the water vapor. Also, when the outside air temperature is high, the steam discharged from the outlet 67 is difficult to see, and the appearance is not impaired.

Further, since the trap portion 66 is formed in the ventilation pipe 65A, the water vapor cooled by the outside air becomes water, is stored in the trap portion 66, and the inside and outside of the hot water tank 34 are shut off. Prevents internal odors from leaking out. Furthermore, since there is no unnecessary circulation with the outside air and the heat retention effect is improved, energy loss during heating and heat retention can be reduced, which is advantageous in using the hot water supply tank 34. In addition, the water accumulated in the thin ventilation pipe 65A is easily pushed out by the increased internal air at the time of water supply, and does not impair the function as the ventilation port. In addition, at the time of water supply, if the water temperature in the hot water supply tank 34 falls, odor hardly occurs. When the temperature inside the hot water tank 34 becomes high again, odor is likely to be generated. However, since the water accumulated in the trap portion 66 blocks the odor, it is possible to prevent the odor from leaking to the outside.

Further, by forming the trap portion 66 in the ventilation pipe 65A and providing the discharge port 67 downward,
Even when there is no water trap, as well as when there is no water trap, the structure is such that foreign substances and the like are hardly mixed into the inside of the hot water supply tank 34 from outside. Even when dust or dust enters the ventilation pipe 65A, it is settled at the bottom of the trap portion 66,
Mixing into the hot water tank 34 can be prevented. Thereafter, the water settled at the bottom of the trap portion 66 is discharged at the time of water supply, so that the inside of the hot water tank 34 can be kept clean and the maintenance interval can be lengthened.

Although the present invention has been described based on one embodiment, the present invention is not limited to this.

In the present embodiment, the ventilation pipe 65A is formed in a spiral shape, but may be formed in a meandering shape as shown in FIG. 6, or as shown in FIG. A plurality may be provided.

In this embodiment, the ventilation pipe mounting portion 64 is used.
Is provided on the side surface of the hot water tank main body 34A, but may be provided on the upper surface of the hot water tank main body 34A.

[0041]

As described above, according to the present invention,
By forming a ventilating device that communicates between the inside of the hot water tank and the outside with a capillary-shaped ventilating tube having a trap portion, when water vapor passes through a narrow tube, dew condensation occurs, and the water vapor is accumulated in the trap portion and closed. Water vapor and odor generated inside the hot water tank are hardly leaked to the outside, and discomfort to surrounding people can be hardly caused.

Further, by forming the trap portion and opening the discharge port downward, it is possible to prevent foreign matter from entering the hot water tank.

[Brief description of the drawings]

FIG. 1 is a refrigerant circuit diagram illustrating an example of an operation state according to an embodiment of the present invention.

FIG. 2 is a refrigerant circuit diagram showing another example of an operating state in one embodiment of the present invention.

FIG. 3 is a sectional view of a hot water tank according to one embodiment of the present invention.

FIG. 4 is a schematic perspective view showing a hot water tank in one embodiment of the present invention.

FIG. 5 is an explanatory view showing a part of a hot water tank according to an embodiment of the present invention, with a part cut away.

FIG. 6 is a schematic perspective view showing an example of a hot water tank different from FIG. 4 of the present invention.

FIG. 7 is a schematic perspective view showing an example of a hot water tank different from FIGS. 4 and 6 of the present invention.

FIG. 8 is a schematic perspective view showing an example of a conventional hot water tank.

FIG. 9 is a schematic perspective view showing another example of a conventional hot water tank.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Outdoor unit (heat source side unit) 2 Compressor 4 Outdoor heat exchanger (heat source side heat exchanger) 16 Indoor unit (use side unit) 17 Indoor heat exchanger (use side heat exchanger) 19 Ice heat storage unit 20 Ice heat storage Heat exchanger for hot water 28 Hot water supply unit 29 Heat exchanger for hot water supply 34 Hot water tank 34A Hot water tank main body 44 Water supply pipe 51 Water supply valve 52 Water level sensor 64 Vent pipe attachment part 65 Ventilation device 65A (Capillary) vent pipe 66 Trap part 67 Discharge exit

Claims (8)

[The claims] 1. A hot water tank having a hot water tank main body for storing hot water therein and a ventilating device above the hot water tank main body, wherein the ventilating device communicates the inside of the main body with the hot water tank main body and the outside. A hot water supply tank, comprising a trapezoid-shaped ventilation pipe, and a trap portion formed in the capillary-shaped ventilation pipe. 2. The hot water supply tank according to claim 1, wherein the capillary-shaped ventilation pipe has a downward opening at a tip end outside the hot water supply tank main body. 3. The hot water supply tank according to claim 1, wherein the capillary-shaped ventilation pipe is formed of a member having good thermal conductivity. 4. The hot water tank according to claim 1, wherein said ventilating device comprises a plurality of capillary-shaped venting pipes. 5. A heat source unit including a compressor and a heat source side heat exchanger, a use side unit including a use side heat exchanger, a heat storage unit including a heat storage heat exchanger, and heat exchange for hot water supply. A hot water supply unit having a water heater is connected to the hot water supply unit with a refrigerant pipe, and the hot water supply unit stores heat for hot water supply using the hot water supply unit and the heat storage unit. A hot water tank main body for storing hot water therein, and a ventilating device at an upper portion of the hot water tank main body, the ventilating device is provided with a capillary-shaped vent pipe for communicating the inside and the outside of the main body with the hot water tank main body. An air conditioner provided with a hot water supply tank, wherein a trap portion is formed in a capillary-shaped ventilation pipe. 6. The air conditioner having a hot water tank according to claim 5, wherein the capillary-shaped ventilation pipe has a downward opening at a distal end outside the hot water tank main body. 7. The air conditioner provided with a hot water supply tank according to claim 5, wherein the capillary-shaped ventilation pipe is formed of a member having good thermal conductivity. 8. The air conditioner provided with a hot water supply tank according to claim 5, wherein said ventilation device is constituted by a plurality of capillary-shaped ventilation tubes.