JPH04268123A - Hot water space heater - Google Patents

Abstract

PURPOSE:To prevent inversive connection of pipings of a water boiler and a convector with a fan when a hot water space heater is installed. CONSTITUTION:The temperature of a hot water inlet piping of a heat exchanger of a convector with a fan is detected by a first temperature sensor 6, and the temperature of a hot water outlet piping of the heat exchanger is detected by a second temperature sensor 7. The temperatures detected by the first and second temperature sensors 6 and 7 are compared by a comparator 8, and inverse connection of the inlet and outlet pipings of the heat exchanger is detected through the comparison of the detected temperatures. The inverse connection signal of piping is sent to an announcing circuit 9 to prevent inverse connection of the piping when a hot water heater is installed.

Description

[Detailed description of the invention]

0001

[Industrial Application Field] This invention relates to a hot water heating system equipped with a fan-equipped convector for heating a room, and more specifically, to prevent reverse connection of piping for circulating hot water to the heat exchanger of the fan-equipped convector. The present invention relates to a hot water heating system.

0002

[Conventional example] Conventionally, this type of hot water heating system consists of, for example, an outdoor hot water boiler (for example, an oil-fired hot water boiler), a fan-equipped convector placed indoors, and a fan-equipped convector that supplies hot water heated by the hot water boiler. It consists of piping for circulation. For convectors with fans,
For example, a heat exchanger 1 shown in FIG. 3 is provided, and this heat exchanger 1 circulates hot water input from a hot water inlet pipe 2 at the lower part of the heat exchanger 1, and passes this circulated hot water through a hot water outlet pipe 3 from the upper part. The water is returned to the hot water boiler via the hot water boiler.

At this time, the temperature of the heat exchanger 1 of the fan-equipped convector is detected, and the cold air prevention is activated according to the detected temperature, that is, the hot water circulated through the heat exchanger 1 is heated at a predetermined level contributing to room heating. If the temperature is high, the fan is turned on; if the hot water being circulated is at a temperature that does not contribute to heating the room, the fan is turned off and only warm air is blown into the room. It looks like this.

0004

[Problems to be Solved by the Invention] By the way, in the above-mentioned hot water heating system, during installation work, since the diameters of the hot water inlet pipe 2 and the outlet pipe 3 of the heat exchanger 1 are the same, it is difficult to install the hot water boiler and the fan. Pipes connecting convectors were sometimes connected in reverse.

[0005] If the pipes are connected in reverse, there is a problem in that the heating capacity of the hot water heating device is reduced and the heating function is hindered due to the operation of the cold air prevention system. In other words, because the fan is installed at a lower position than the heat exchanger, the temperature of the air blown into the room will be lower than normal, and the temperature sensor (thermistor) that activates the cold air prevention is Since it is installed near the hot water inlet pipe 2 of the heat exchanger 1, the temperature of the hot water inlet pipe 2 (the temperature detected by the temperature sensor) will be lower than normal due to the reverse connection of the pipe, preventing normal cold air. This is because the operation will no longer be performed.

[0006] Therefore, labels are pasted on fan-equipped convectors to warn people about the reverse connection of piping. The reality is that reverse connections cannot be completely eliminated.

[0007] This invention was made in view of the above problems, and its purpose is to notify the reverse connection of the piping between the hot water boiler and the fan-equipped convector during installation work, and to reliably prevent the reverse connection of the piping. The purpose of the present invention is to provide a hot water heating device that can perform the following tasks.

[0008]

[Means for Solving the Problems] In order to achieve the above object, the present invention provides a hot water boiler for obtaining hot water at least at a predetermined temperature, and a heat generating system for circulating the hot water heated by the hot water boiler through piping. In a hot water heating system comprising an exchanger and a fan-equipped convector comprising a fan or the like for blowing warm air into a room via the heat exchanger, a first step detecting the temperature of the hot water inlet pipe of the heat exchanger;
A second temperature sensor detects the temperature of the hot water outlet piping of the heat exchanger, and the temperature detected by the first temperature sensor and the temperature detected by the second temperature sensor are compared, and the temperature detected by the second temperature sensor is compared. A comparator that detects a reverse connection of the piping between the hot water inlet and hot water outlet of the boiler and the hot water boiler, and a notification circuit that notifies the reverse connection of the piping by a reverse connection detection signal of the piping. This is the summary.

[0009]

[Operation] With the above configuration, when connecting the piping between the hot water boiler and the fan-equipped convector in the installation of the hot water heating system, if the piping, that is, the piping of the hot water inlet and hot water inlet of the heat exchanger, are connected in reverse, Hot water heated by the hot water boiler is input from the hot water outlet piping and circulated to the heat exchanger, and this circulated hot water is returned to the hot water boiler via the hot water inlet piping. At this time, since the temperature detected by the first temperature sensor becomes lower than the temperature detected by the second temperature sensor, the comparator detects the reverse connection of the hot water inlet and hot water outlet pipes of the heat exchanger. This reverse connection detection signal is input to the notification circuit, and the reverse connection of the piping is notified.

[0010] Therefore, it is possible to detect the reverse connection of the pipes during a test run during the installation work of the hot water heating system, and it is possible to eliminate the mistake of completing the work with the pipes connected in reverse.

[0011]

Embodiments Hereinafter, embodiments of the present invention will be explained based on FIGS. 1 and 2. In addition, in the figure, the same parts as in FIG. 3 are given the same reference numerals, and redundant explanation will be omitted. In FIGS. 1 and 2, a fan-equipped convector 4 of this hot water heating system includes a heat exchanger 1, a fan 5 for blowing warm air into the room via the heat exchanger 1, and a fan 5 for blowing warm air indoors through the heat exchanger 1. A first temperature sensor (thermistor) 6 that detects the temperature of the hot water inlet pipe 2, a second temperature sensor (thermistor) 7 that detects the temperature of the hot water outlet pipe 3 of the heat exchanger 1, and the first
The temperature detected by the second temperature sensor 6 is compared with the temperature detected by the second temperature sensor 7, and if the temperature of the hot water inlet pipe 2 is lower than the temperature of the hot water outlet pipe 3, a detection signal of reverse connection of the pipes is output. 8, and a notification circuit 9 that uses the detection signal to notify of reverse connection of the pipes.

The first temperature sensor 6 is attached to the hot water inlet pipe 2, but it may also be used as a temperature sensor for a cold air prevention device, for example, while the second temperature sensor 7
is attached to the hot water outlet pipe 3. Furthermore, the notification circuit 9 is turned on (turned on) by the detection signal from the comparator 8.
NPN type transistor 9a and this transistor 9
The light emitting diode 9b emits light when the switch a is turned on.

[0013] When installing the hot water heating system, a hot water boiler (not shown) and a convector 4 with a fan are installed.
However, it is assumed that the piping is connected in reverse by mistake. Then, during a test run of the hot water heating system, the hot water heated by the hot water boiler (for example, 80°C hot water) is circulated to the heat exchanger 1 via the hot water outlet piping 3, and the hot water that circulated through the heat exchanger 1 is (for example, 60° C. hot water) is returned to the hot water boiler via the hot water inlet pipe 2.

At this time, the first hot water sensor 6 detects the temperature of the hot water circulating through the heat exchanger 1, that is, the low temperature water (60°C
) is detected, and the second hot water sensor 7 detects that heat exchanger 1.
The temperature (80°C) of the hot water circulating in the air, that is, the high temperature water, is detected. As a result, in the comparator 8, since the temperature of the hot water inlet pipe 2 is lower than the temperature of the hot water outlet pipe 3,
Detection of reverse connection of piping is performed.

A reverse connection detection signal ("H" level) of the piping is output from the comparator 8, and this detection signal turns on the NPN transistor 9a. When the transistor 9a is turned on, a predetermined current flows through the light emitting diode 9b, and the light emitting diode 9b emits light, so that it is possible to notify the installer of the hot water heating device of the reverse connection of the pipes. Therefore, the reverse connection of the piping can be corrected during the installation work, and the reverse connection can be reliably prevented.

Further, when the temperature detected by the first temperature sensor 6 is higher than the temperature detected by the second temperature sensor, that is, when the temperature of the hot water inlet pipe 2 of the heat exchanger 1 is higher than the temperature of the hot water outlet pipe 3. Since the comparator 8 does not detect the reverse connection of the pipes, the notification circuit 9 does not operate.

The notification circuit 9 of the above embodiment is designed to notify the reverse connection of the pipes by emitting light from the light emitting diode 9b, but it is also possible to notify by, for example, blinking light or sound (including synthesized sound). You may also do so.

[0018]

As explained above, according to the present invention, in a hot water heating system that circulates hot water heated in a hot water boiler to a convector equipped with a fan to heat a room, the heat exchanger of the convector equipped with a fan is heated. A first temperature sensor that detects the temperature of the hot water inlet pipe, a second temperature sensor that detects the temperature of the hot water outlet pipe of the heat exchanger, and the temperature detected by the first temperature sensor and the second temperature sensor. A comparator that compares the temperatures detected by the heat exchanger and detects a reverse connection between the hot water inlet and hot water outlet of the heat exchanger and the piping of the hot water boiler, and an alarm circuit that notifies the reverse connection by a reverse connection detection signal of the piping. Therefore, when installing a hot water heating system, if the hot water inlet and hot water outlet piping of the heat exchanger are connected in reverse during trial operation, the reverse connection will be notified, so it is important to ensure that the piping is connected in reverse. It can be prevented.

[Brief explanation of the drawing]

FIG. 1 is a schematic side sectional view of a fan-equipped convector of a hot water heating system showing an embodiment of the present invention.

[Figure 2] A schematic circuit diagram of a reverse connection detection device for piping in the fan-equipped convector shown in Figure 1.

[Figure 3] Schematic front view of a heat exchanger of a fan-equipped convector

[Explanation of symbols]

1 Heat exchanger 2 Hot water inlet piping (Heat exchanger 1) 3 Hot water outlet piping (Heat exchanger 1) 4 Convector with fan 5 Fan 6 First temperature sensor (thermistor) 7 Second temperature sensor (thermistor) 8 Comparison Device 9 Notification circuit 9a NPN transistor 9b Light emitting diode

Claims (1)

[Claims] Claim 1: A hot water boiler for obtaining hot water of at least a predetermined temperature, a heat exchanger for circulating the hot water heated by the hot water boiler via piping, and air heated by the heat exchanger into the room. In a hot water heating device equipped with a fan-equipped convector consisting of a fan for blowing air,
A first temperature detection means for detecting the temperature of the hot water inlet pipe of the heat exchanger, a second temperature detection means for detecting the temperature of the hot water outlet pipe of the heat exchanger, and the first temperature detection means Comparing means for comparing the detected temperature with the temperature detected by the second temperature detecting means and detecting a reverse connection of piping between the hot water inlet and the hot water outlet of the heat exchanger and the hot water boiler, and a reverse connection of the piping. What is claimed is: 1. A hot water heating device comprising: a notification means for notifying reverse connection of pipes by a detection signal.