JP2005315548A - Natural circulation promoting device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To solve the problem that only natural convection uses a temperature difference to create hot water, but it needs long-time hot water storage, causes much time loss, and induces bubbles therein because high temperature water is stored at the upper part to be supplied to possibly cause brown water, corrosion, deterioration and it brings about such an unbalanced supply amount of hot water, when used in a simultaneously great amount, that resupply water enters directly into a tank and the lower half is cold water to miss the supply of the hot water. <P>SOLUTION: A mixing pipe is installed in a hot water supply tank in use. Herein, an approximately J-shaped mixing pipe with a high temperature water suction port having a diameter larger than the diameter of the discharge port of an introduction pipe is joined to the discharge port of the introduction pipe while a cavity is provided in this joint portion. Besides, an approximately J-shaped mixing discharge pipe with a low temperature water suction port having a diameter larger than the diameter of the discharge port of the mixing pipe is joined to the discharge port of the mixing pipe while a cavity is provided in this joint portion. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

    The present invention promotes the stirring of hot water in the hot water tank by natural circulation by using the fluid force utilizing the temperature difference without using power such as a new pump to circulate the hot water in the hot water tank. By this, it is related with the natural circulation promotion apparatus which aimed at the increase in the amount of effective utilization hot water.

  The concept of the conventional hot water supply equipment is the application of the principle of three-layer separation, where hot water rises and cold water collects at the bottom, and a temperature sensor is attached to the middle part of the hot water tank, but the top is hot. On the contrary, since the lower part is at a low temperature, the volume of the hot water tank itself is increased because it is necessary to hold a preliminary element in order to stably supply hot water at a constant temperature. In conventional hot water tanks, makeup water and heat source water from the boiler are directly discharged into the hot water tank, so that there is always no temperature difference between them, and there is always a difference in temperature. Therefore, it can be said that the conventional hot water supply tank is a hot water supply equipment system using the temperature difference. Attempts have been made to improve the energy efficiency by improving the situation as much as possible. These are actual Kaihei 4-5950 advertisement, actual fair 7-12808 advertisement, actual fair 7-12809 advertisement, and the like. Looking at them, even in the same mixing tube used in the hot water tank, the mixing tube has a double tube structure, which makes the structure complicated and expensive. Also, functionally, in the double tube structure, a stagnant portion (dead water) is formed in the upper part, which causes corrosion deterioration due to concentration of each component. Furthermore, in a sealed hot water tank, it must be carried in from a narrow manhole, but not only is it difficult to divide due to the complicated structure, but the effect of this method is only about twice the amount of circulation of the main hot water. The problem of not circulating.

  Since the conventional hot water tank makes hot water only by natural convection using a temperature difference as described above, it is necessary to store hot water for a long time, and there is a lot of time loss. Further, since hot water is stored and supplied at the top, bubbles are also taken in, causing red water, corrosion, and deterioration. Further, when a large amount of hot water is used simultaneously, makeup water enters the tank directly and the lower half is cold water. In this way, when the balance of the supply amount is lost, many users are in trouble because the supply of hot water is not in time. In the prior art, expensive equipment such as a steam separator and a temperature control valve device is required to solve such a problem. The present invention has been developed to solve such problems, and can be effective only by being installed in an existing hot water tank. Even if the conventional equipment remains as it is, the hot water from the circulation pump of the boiler heat source circuit is simply injected into the introduction pipe without using the power of a new pump to circulate the hot water in the hot water tank. An object of the present invention is to provide a natural circulation promoting device capable of promoting an increase in the amount of hot water available for use by promoting the stirring of hot water in a hot water supply tank by natural circulation by using a fluid force utilizing the difference. In addition, it was investigated whether there is a similar prior art in the application of the present invention, but what is naturally mixed and stirred in the hot water tank by sucking hot water from the gap of the mixing pipe or mixing discharge pipe? I didn't find it.

  In order to achieve the above object, the natural circulation promoting device of the present invention has the following configuration.

Claim 1

  In a mixing tube installed and used in a hot water tank, a substantially J-shaped mixing tube 2 having a high-temperature water suction port 3 having a diameter larger than that of the introduction tube 1 is joined to the discharge port of the introduction tube 1. In addition, a gap capable of sucking high-temperature water is provided in the joint, and the discharge port of the mixing tube 2 is further provided with a low-temperature water suction port 5 having a diameter larger than the diameter of the discharge port of the mixing tube 2. A J-shaped mixed discharge pipe 4 is joined, and a gap capable of sucking low-temperature water is provided at the joint.

Claim 2

  The discharge port at the tip of the introduction tube 1 has a double branch tube structure, the mixing tube 2 is connected to the discharge port of the introduction tube 1, the mixing discharge tube 4 is connected to the discharge port of the mixing tube 2, and a plurality of tubes are provided. The natural circulation promoting device according to claim 1, which is joined.

The invention's effect

Since this invention is comprised as mentioned above, there exists an effect described below.
1. Ejector of high temperature water into the mixing pipe 2 from the gap between the discharge port of the introduction pipe 1 and the high temperature water suction port 3 simply by pressing hot water into the introduction pipe 1 with a circulation pump of the heat source circuit of the boiler The mixture is sucked and mixed with hot water from the boiler. Further, from the gap at the junction between the discharge port of the mixing pipe 2 and the low-temperature water suction port 5, low-temperature water is similarly sucked and mixed by the ejector action, and mixed and stirred with the high-temperature water in the mixing discharge pipe 4. Is called. In this way, the hot water from the boiler is mixed with the hot water and the hot water is discharged downward from the discharge port of the mixing discharge pipe into the hot water in the hot water tank. Since the hot water is constantly stirred, the amount of medium-temperature water can be significantly increased.
2. By simply installing this device in the hot water tank without making any improvements to the existing hot water tank, the natural circulation of hot water in the hot water tank is promoted, and the circulation and convection of the water volume is approximately three times the circulation volume of the original hot water tank. Is possible.
3. Without using new power such as a pump to circulate hot water in the hot water tank, the three-layer separation structure, which is a defect of the existing hot water tank, is used in reverse, and the natural fluidity utilizing the temperature difference Therefore, the inside of the hot water tank can be agitated by promoting natural circulation, and the amount of medium-temperature water that can be used effectively can be increased. Therefore, only the initial investment of this device is required, there is no failure, no maintenance costs and no running costs.
4). Since the installation of this apparatus can be disassembled and assembled, even a closed circulation tank can be easily assembled from a manhole hatch, and it can be installed overnight with little incidental work.
5). The embodiment in which the discharge port at the tip of the introduction pipe 1 has a double branch pipe structure is used for a tank having a large hot water tank capacity. In this embodiment, the discharge port is set at an optimal position according to the volume of the tank. The natural circulation in the hot water tank can be efficiently promoted, and the available hot water amount of the conventional hot water tank can be increased up to about twice.
6). There is no need for expensive equipment such as reduction of tanks and expansion tanks and three-way valve devices, and the deoxidation effect is enhanced to greatly reduce the oxidation / corrosion degradation of the entire equipment, improving the efficiency of equipment and durability. It can also improve the annual maintenance cost.

The best mode for carrying out the invention of the present invention will be described with reference to the drawings.
FIG. 1 relates to claim 1 and is a single-tube assembly perspective view.
In FIG. 1, a substantially J-shaped mixing tube 2 having a high-temperature water suction port 3 having a diameter larger than the diameter of the discharge port is joined to the discharge port of the introduction tube 1, and high-temperature water can be sucked into this joint. A gap is provided. Further, a substantially J-shaped mixed discharge pipe 4 having a low-temperature water suction port 5 having a diameter larger than that of the discharge port of the mixing pipe 2 is joined to the discharge port of the mixing pipe 2, and a low temperature is connected to this joint. It is assembled as a natural circulation promoting device by providing a space that can suck water.

Since the present invention is configured as described above, the hot water from the boiler is simply press-fitted with the circulation pump pressure. Further, the low temperature water is sucked from the low temperature water suction port 5 and mixed in the mixing discharge pipe 4, and the mixed hot water is discharged downward in the hot water tank. The present invention makes effective use of the three-layer separation phenomenon in the hot water tank, in which the high temperature water area and the low temperature water area in the hot water tank are sucked into the mixing pipe 2 and the mixing discharge pipe 4, respectively. Since stirring of the hot water in the tank is constantly performed and promoted, the effective hot water having a constant temperature can be increased. By doing so, it is possible to significantly increase the amount of medium-temperature water that can be effectively used effectively, so that it is possible to circulate and convect the amount of water approximately three times the amount of the main hot water. Moreover, it can be secured quickly in terms of time. In addition, it is an energy-saving natural circulation promoting device that does not require new energy such as electric power or a pump to stir and circulate the hot water in the hot water tank. Furthermore, since the facility construction of the present invention can be assembled by dividing the apparatus, even a closed circulation hot water tank can be easily installed from a manhole hatch in a short time.
Since the present invention uses the conventional apparatus as it is and simply extends a simple apparatus in the hot water tank, only an initial investment is required. The pump is not required, and it is a maintenance-free stirring promoting device that is maintenance-free and does not require maintenance costs. In addition to the above, there is no need for expensive equipment such as the reduction of tanks and expansion tanks and three-way valve devices, and the efficiency of equipment is improved by improving the deoxidation effect and greatly reducing the oxidation / corrosion degradation of the entire equipment. Durability increases with up.

The embodiment of FIG. 2 is a perspective view in which the discharge port at the tip of the introduction pipe 1 has a double branch pipe structure.
In the embodiment of FIG. 2, it corresponds to a large hot water supply tank, and the discharge port at the tip of the introduction pipe 1 has a double branch pipe structure. Accordingly, the mixing pipes 2 each having the high-temperature water suction port 3 having a diameter larger than the diameter of the discharge port are joined to the discharge ports of the plurality of branch pipe structure introduction pipes 1. Furthermore, the mixed discharge pipe 4 having the low temperature water suction port 5 having a diameter larger than the diameter of the discharge port is joined to the discharge port of the mixing pipe 2. In this embodiment, the same effects and functions as in the embodiment of FIG. 1 are exhibited, and the direction of the discharge port of the mixed discharge pipe 4 is arbitrarily selected and set to the direction in which the efficiency of stirring the hot water in the hot water tank is raised. can do. Even in this embodiment, hot water is circulated about three times as much as the circulation amount of the original hot water, and the effective hot water amount can be secured quickly in time.

  Since the present invention is configured as described above, an assembly in which the mixing pipe 2 is joined to the introduction pipe 1 and the mixing discharge pipe 4 is joined to the mixing pipe 2 is simply installed in the hot water tank. So, the energy-saving type that can promote natural circulation and stir the hot water in the hot water tank can play a role in stopping the global warming phenomenon. Encouraging and spreading such inventions may not meet the needs of the times.

  It is an assembly perspective view of a single tube type.   It is the perspective view which made double branch pipe structure.

Explanation of symbols

(1) is the inlet pipe (2) is the mixing pipe (3) is the hot water suction port (4) is the mixing discharge pipe (5) is the low temperature water suction port

Claims (2)

  In the mixing tube installed and used in the hot water tank, the discharge port of the introduction tube (1) is substantially J-shaped having a high-temperature water suction port (3) having a diameter larger than that of the discharge port of the introduction tube (1). The mixing tube (2) is joined, and the discharge port of the mixing tube (2) further includes a low-temperature water suction port (5) having a diameter larger than that of the discharge port of the mixing tube (2). A natural circulation promoting device, wherein a J-shaped mixed discharge pipe (4) is joined.   The introduction pipe (1) has a double branch pipe structure, a mixing pipe (2) is joined to the introduction pipe (1), a mixing discharge pipe (4) is joined to the mixing pipe (2), and a plurality of pipes are joined. The natural circulation promoting device according to claim 1.

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