JPS613949A - Water heater - Google Patents

Abstract

PURPOSE:To permit to effect stabilized temperature detecting and obtain good hot- water supplying performance by a method wherein water and hot-water are mixed instantaneously in an upper header to produce stabilized hot-water temperature. CONSTITUTION:The upper header 3 and a lower header 2, both of which are formed annularly, are connected by a plurality piece of vertical pipes 4 and the upper header is equipped with a feed water pipe 4, a hot-water supplying pipe 7 and a temperature detector 9 while the upper header 3 is provided with a whirling means for whirling the water, supplied through the feed water pipe 6, in the upper header. The whirling means is constituted of whirling pipe 8, provided in the feed water pipe 6 and located circumferentially in the feed water pipe 6, and the lower end thereof is closed while the opening end thereof is located on the central part in the upper header. According to this constitution, water and hot-water are mixed instantaneously in the upper header and the stabilized hot-water temperature is produced, therefore, stabilized temperature detection may be effected and prominent hot-water supplying performance may be obtained. On the other hand, generation of dew water on the surface of the vertical pipes during combustion may be prevented and, therefore, prominent performance of combustion may be obtained.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a configuration that contributes to improving the hot water supply performance of hot water boilers used in hot water introduction machines and household heating equipment.

Conventional Structure and Problems Conventionally, this type of hot water boiler has a structure as shown in FIG. That is, a heat exchange # in which an annularly formed upper header 21 and a lower header 22 are vertically connected by a plurality of vertical pipes 23.
24 and the water supply pipe 2 installed on the upper part of the ladder 21
6, a hot water supply pipe 26, and a temperature sensor 27 attached to a heat exchanger 24.

Here, when water enters the heat exchanger 24 from the water supply pipe 25 during combustion in the boiler, a portion of the water spreads into the upper header 21 as shown by arrow a.

Other water descends in the vertical pipe 23 near the water supply pipe, as indicated by the arrow. For example, if the temperature sensor 27 is located at the lower rudder 22, the temperature at the lower header 22 is low even when hot water is continuously discharged from the hot water supply pipe 226 in a small amount. Since the temperature detection is always ON, the boiler is in continuous operation, and therefore boiling water comes out from the hot water supply pipe 26.

In this case, if you lower the temperature setting for temperature detection, temperature sensor 2
In step 7, by detecting the ON and OFF temperatures, the boiler will operate intermittently and prevent boiling water from coming out, but if you boil water from water with the water supply turned off, the temperature setting is low and hot water will not come out. There was a problem where I couldn't get it.

Next, if the temperature sensor 27 is located in the vertical pipe 23, the amount of canned water in the vertical pipe 23 is small and the vertical pipe 23 is a place where heat is exchanged, so the temperature distribution in the pipe becomes uneven. Therefore, stable temperature detection cannot be performed.

Next, if the temperature sensor 27 is located in the upper header 21, during continuous hot water dispensing, the supplied water and the hot water obtained by combustion slowly mix in the upper header 21, resulting in large fluctuations in the hot water temperature. As a result, stable temperature detection cannot be performed.

As mentioned above, there are problems with hot water supply performance, and
Since the supplied water moves toward the lower header 22 in the vertical pipe 23 near the water supply pipe, the vertical pipe near the water supply pipe 25 is cooled, and during combustion, dew condensation water is formed on the outer surface of the vertical pipe 23 and combustion occurs. There was a problem with water falling and collecting inside the room.

OBJECTS OF THE INVENTION The present invention eliminates these conventional drawbacks, and eliminates defects in hot water supply performance by making it possible to perform appropriate temperature detection, and also prevents the generation of dew condensation.

Structure of the Invention In order to achieve this object, the hot water boiler of the present invention connects an annularly formed upper header and a lower header vertically with a plurality of vertical pipes, and connects the upper header with a water supply pipe, a hot water supply pipe, and a temperature sensor. The header is equipped with a means for swirling the water supplied from the water supply pipe within the upper header.

With this configuration, water is supplied to the upper header while turning at a high speed. Therefore, the swirling force of the supplied water becomes large.

If the supplied water does not have a swirling force, the hot water and water will mix very slowly and the temperature will not be stable. However, if the supplied water has a swirling force, the hot water and water will be instantaneously stirred and mixed, so the hot water temperature will change. becomes stable. For this reason, stable temperature detection can be performed in the upper header, so the hot water supply performance can be satisfied, and the water supplied by swirling flows uniformly into each vertical pipe. -The water is heated through natural convection with the hot water in the vertical pipes. For this reason, the water flowing toward the vertical pipes is not concentrated in one part, so only the vertical pipes near the water supply pipes are cooled and no condensation water is generated.

DESCRIPTION OF EMBODIMENTS Hereinafter, embodiments of the present invention will be described in the first embodiment. This will be explained based on FIG.

In the figure, 1 is a combustion chamber, 2 is an annular lower header surrounding the combustion chamber 1, and 3 is an annular upper header. The upper header 3 and the lower header 2 are vertically connected by a plurality of vertical pipes 4. A heat exchanger 5 is formed. 6.7 is a water supply pipe and a hot water supply pipe installed in the upper header 3 above the heat exchanger 5. 8
is a rotating pipe provided in the water supply vibro; the lower end of this rotating pipe 8 is closed, and an opening is provided at a location located in the center of the upper header 3 and in the circumferential direction.

9 is a temperature sensor attached to the upper header 3.

The operation will be explained below.

While the boiler is burning, the water supplied by the water supply vibro is
A turning force eve 8 provided in the water supply vibro causes water to be supplied turning in the circumferential direction of the upper header 3 as shown by arrow C. For this reason, water and hot water are instantaneously stirred and mixed in the upper header a by the swirling force of the supplied water. If there is no swirling force, the temperature distribution in the upper header 3 will be non-uniform because the hot water will mix slowly, making it impossible to perform good temperature detection, but if there is a swirling force, the above This eliminates the need for stable hot water temperature, enables stable temperature detection, and satisfies hot water supply performance. Moreover, by rotating the water supply, the amount of water directed toward each vertical pipe 4 becomes uniform. If the water supply does not have a turning force, it will concentrate on the vertical pipe 4 near the water supply vibro, and will flow through the vertical pipe 4 toward the lower header 2 due to the inertial force of the water supply. For this reason, unlike other vertical pipes 4, the vertical pipe 4 near the water supply vibro is cooled by water, which causes dew condensation during combustion and accumulates on the bottom of the combustion chamber 1, resulting in poor combustion performance. However, with the swirling water supply, water flows uniformly into each vertical pipe 4 and is heated while causing natural convection within each vertical pipe 4, eliminating the possibility of condensation. .

Effects of the Invention As described above, according to the present invention, water and hot water are instantaneously stirred and mixed in the upper header, thereby producing a stable temperature of the hot water, making it possible to perform stable temperature detection. It becomes possible to satisfy the hot water supply performance. Furthermore, the water supply flows uniformly into each vertical pipe due to the swirling water supply, and is heated while causing natural convection. Therefore, it is possible to prevent the formation of dew water on the surface of the vertical pipe during combustion, and the combustion performance can be satisfied.

[Brief explanation of drawings]

Figure 1 is a plan view of a hot water boiler showing an embodiment of the present invention; Figure 2 is a cross-sectional view of the hot water boiler; Figure 3 is a vertical cross-sectional view of a conventional hot water boiler. 2. Lower header , 3 ・Upper header, 4 ・Vertical pipe, 6
-・Water supply pipe, 8 Swivel pipe, 9...Temperature detector. Name of representative Patent attorney Toshio Nakao and 1 other person 1st
Figure l □J q , Figure 2

Claims (2)

[Claims] (1) An upper header and a lower header formed in an annular shape are connected vertically with multiple vertical pipes, and the upper header is equipped with a water supply pipe, a hot water supply pipe, and a temperature sensor, and the water supplied from the water supply pipe is A hot water boiler equipped with a means for rotating within the header. (2) The turning means is a turning pipe installed in the water supply pipe, the lower end of the turning pipe is closed, and the opening is located in the center of the upper header, and is located in the circumferential direction. A hot water boiler according to claim 1, wherein the hot water boiler has the following configuration.