JPH05223262A - Heat exchanging apparatus - Google Patents

Abstract

PURPOSE:To furnish a heat exchanging apparatus wherein a function of measuring the quantity of heat for heating in a centralized hot water supply system. CONSTITUTION:A heat exchanger 1 conducting heat exchange between a primary-side heat medium and a secondary-side heat medium is provided, and a heat medium flowmeter 6 and detectors constructed of an inlet-side temperature sensor 8 and an outlet-side temperature sensor 9 and measuring the quantity of heat exchange, are disposed at a heat medium flow passage 3 of this heat exchanger 1. Detection signals of these detectors are inputted to an arithmetic device, the quantity of used heat for a unit time is computed and integrated thereby and an integration signal thus obtained is displayed in a display unit 20 which faces an opening 21 provided in an external case 2.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION The present invention mainly supplies hot water to each house by a main heat source machine (boiler + hot water circulation pump) installed in the basement of a housing complex or on the rooftop, and uses this hot water heat source to heat each house. The present invention relates to a heat exchange device for each door in a system for performing.

[0002]

2. Description of the Related Art Generally, as an integrated hot water supply system for an apartment house of this type, each house shares the amount of heat used. Therefore, it is necessary to accurately grasp the heat consumption of each house.

Conventionally, as a means for measuring the amount of heat used, a calorimeter has been arranged in a pipe chamber called a pipe shaft provided outside the house (outer space of the living space).

[0004]

However, as a conventional calorific value measuring means, a calorimeter is connected in a pipe connecting an instrument (heat exchange device) and a heat source device, and an indicator is installed in the vicinity of the instrument. , A large space in the piping room must be taken,
There is a problem that the living space becomes small (when the living space is secured, the piping space is limited, the piping becomes complicated, and the construction maintenance property deteriorates).

In view of the above situation, it is an object of the present invention to provide a heat exchange device that solves the above problems by incorporating a heat quantity measuring function into a heat exchanger unit set in a piping chamber. .

[0006]

The present invention provides a heat exchanger for exchanging heat between a heat medium on the primary side and a heat medium on the secondary side, and a heat exchanger provided in a heat medium passage of the heat exchanger. A detector for measuring the amount of heat exchange in the device, a calculation device that calculates the heat usage amount per unit time based on the signal from this detector, and integrates this, and the integration signal of this calculation device A display for displaying the amount of heat used based on the above, and an exterior case for accommodating the heat exchanger, the detector, the arithmetic unit and the display, the exterior case having an opening facing the display Is.

[0007]

With the above structure, the detector (flow meter, inlet side temperature sensor, outlet side temperature sensor, etc.) that measures the amount of heat exchange by the primary side heat medium (heating water heat medium) facing the heat source machine When it flows into the heat exchanger via the heat exchanger, the heat medium on the secondary side of the inflow (hot water heat medium) is heat-exchanged from the hot water tank connected to the radiator side, and the heated hot water flows to the radiator to radiate heat and to perform the prescribed heating. Do.

In this case, the amount of heat used per unit time is calculated and integrated by the arithmetic unit based on the signal from the detector, and the integrated value data is displayed on the display facing the opening of the outer case.

[0009]

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

FIGS. 1 to 4 show a heat exchange device in which each device is assembled in an outer case, and 1 is a heat exchanger housed in an outer case 2 which is the main body of the device, and is a circulation circuit of the heat exchanger 1. The heat source unit (not shown) consisting of a boiler and a hot water circulation pump arranged on the rooftop, underground, etc. makes the tip of the primary side heat transfer medium passage 3 face the secondary side heat which becomes the load side of the heat exchanger 1. A separately arranged heating radiator 5 is connected to the medium flow path 4. 6 is a heat medium flow meter provided in the inflow passage portion 3a of the primary side heat medium flow passage 3, 7 is a heat valve serving as an on-off valve provided in the outflow passage portion 3b, and the heat medium flow meter 6 An inlet side temperature sensor 8 composed of a thermistor is attached near the heat valve 7 and an outlet side temperature sensor 9 is attached near the heat operated valve 7. Constitutes a detector 10 for measuring the heat exchange amount. Reference numeral 11 denotes a hot water tank which is disposed in the inflow path portion 4a of the secondary side heat medium flow path 4 with a circulation pump 12 interposed, and a return conduit portion 4c of the heating radiator 5 is provided at one end of the hot water tank 11.
And a drain tank 15 is arranged through a relief hose 14 in a pressure adjusting valve 13 which is a water level adjusting cap formed in the upper part of the hot water tank 11, and an overflow hose 16 is provided in the drain tank 15. Become. 17
Is a water-filled water injection pipe having a water-filled check valve 18 branched in the middle of the inflow passage portion 4a of the secondary side heat medium passage 4. 1
Reference numeral 9 denotes a control board provided with an arithmetic unit for performing calorific value calculation. The display board 20 is arranged so as to face the opening 21 provided in the lid portion 2a of the outer case 2.

Explaining this action, first, in this heating operation, if the thermal valve 7 is opened and the circulation pump 12 is driven, the heated primary side heat medium (hereinafter referred to as heated hot water) flowing from the heat source unit side. ) Is from the inflow passage portion 3a to the heat exchanger 1
A heat source circuit that returns to the heat source device via the outflow passage portion 3b via the heat exchanger is configured, and the secondary side heat medium (hereinafter, simply referred to as hot water) flowing to the heating circuit portion incorporated in the heat exchanger 1 is heat-exchanged with a predetermined hot water. Then flows from the outflow passage portion 4b to the radiator 5 for heating, and heat is dissipated by the radiator 5 to heat the room. The hot water that has passed through the heating radiator 5 is returned to the hot water tank 11 from the return pipe portion 4c and is circulated in a predetermined manner. Further, in the hot water tank 11, the hot water heated and expanded during heating is caused to temporarily flow out to the drain tank 15 side by opening the pressure adjusting valve 13, and the hot water in the heating circuit (heating water) contracts due to cooling. Occasionally, the heating water in the drain tank 15 will come back.

Here, the flow rate of the heated hot water for measuring the amount of heat supplied from the heat source unit is measured by a heat medium flow meter 6 which is a detector mounted near the inlet joint of the heat exchanger 1. The output signal is input to the arithmetic unit a of the control board 19, while the signals of the inlet side temperature sensor 8 and the outlet side temperature sensor 9 are input to the arithmetic unit a via the A / D converter b, and based on this, The amount of heat used per hour is calculated and integrated. The integrated signal of the arithmetic device a is stored in the integrated value data storage device c and the calorie is displayed on the display 20 which is a digital display.

The amount of heat used displayed on the display 20 can be read from the opening 21 of the outer case 2.

In this case, the used heat quantity Q is expressed by the following equation.

Q = (T1−T2) × L × k where T1 is the inlet temperature, T2 is the outlet temperature, L is the flow rate, and k is the correction coefficient (equipment adjustment coefficient).

[0016]

As described above, in the heat exchange device of the present invention, the heat medium (heating hot water) calorimeter is built in the heat exchanger unit which is a box, so that the heat medium is an important device of the heat exchange device. The calorimeter can be installed without taking up the installation space, and the device becomes smaller than the conventional external piping, and the space can be effectively used. Moreover, since the heat exchanger unit and the heat medium calorimeter are integrated, the production cost is reduced. Further, the piping member of the heat medium calorimeter at the time of construction can be eliminated, which is also cost effective from this point.

[Brief description of drawings]

FIG. 1 is a schematic view showing an embodiment of the present invention.

FIG. 2 is a perspective view of an outer case.

FIG. 3 is a front view showing internal piping.

FIG. 4 is an explanatory diagram of the control device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 heat exchanger 2 exterior case 3 primary side heat medium flow path 4 secondary side heat medium flow path 5 heating radiator 6 heat medium flowmeter 7 heat valve 8 inlet side temperature sensor 9 outlet side temperature sensor 19 control board 20 display

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Seiji Shimizu 2-18, Keihan Hondori, Moriguchi City, Osaka Prefecture Sanyo Electric Co., Ltd. (72) Inventor Takuyuki Yajima 2-Chome, Keihan Hondori, Moriguchi City, Osaka Prefecture Sanyo Denki Co., Ltd. (72) Inventor Hitoshi Umezu 2-18 Keihan Hondori, Moriguchi City, Osaka Prefecture Sanyo Denki Co., Ltd. (72) Kiyoma Yamagishi 2-18 Keihan Hondori, Moriguchi City, Osaka Sanyo Electric Co., Ltd. In the company

Claims (1)

[Claims] 1. A heat exchanger for exchanging heat between a heat medium on the primary side and a heat medium on the secondary side, and a heat medium flow passage of the heat exchanger, which measures the amount of heat exchange in the heat exchanger. For calculating the amount of heat used per unit time based on a signal from the detector, and an arithmetic unit that integrates the amount of heat used, and displays the amount of heat used based on the integrated signal of this arithmetic unit A heat exchange characterized by comprising a display and an exterior case accommodating the heat exchanger, the detector, the arithmetic unit and the display, and the exterior case having an opening facing the display. apparatus.