JP2017113680A - Foreign matter capturing device, circulation system using the same, and heating apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a foreign matter capturing device capable of capturing efficiently a foreign matter.SOLUTION: A foreign matter capturing device includes a cylindrical vessel provided with an inlet for a fluid and an outlet on a furthermore upper part than the inlet, and having an inner diameter larger than the inlet, and a top plate provided between the inlet and the outlet in the cylindrical vessel, and having a passage port formed so that the fluid passes therethrough from the inlet to the outlet.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a foreign material capturing device for capturing foreign material particles contained in a fluid, a circulation device using the same, and a heating device.

  Heat exchangers are used for air conditioning equipment and refrigeration equipment, and heat exchangers perform heat exchange when a temperature difference occurs between two adjacent fluids, causing heat transfer along a temperature gradient. is there. Between the two fluids, a metal having high thermal conductivity is sandwiched as a heat transfer surface, thereby preventing mixing of the two fluids and realizing efficient heat exchange. There are many types of heat exchangers, including multi-tube type, coil type, double-pipe type, plate type, and spiral type. A fluid for performing heat exchange is generally called a heat medium or a refrigerant, and mainly fluorocarbon or ammonia is used. Some heat exchangers are called water heat exchangers that use water as a heat medium, and hot water heaters and heaters are examples of air conditioning and cooling devices that use water circulation devices that have water heat exchangers. .

  In some cases, dissolved oxygen in the circulating water acts as an oxidizing agent on iron parts such as heat exchangers and iron pipes, causing an oxidation reaction and iron rust. In addition, when a new hot water heater is introduced, metal powder during construction may remain in the flow path. If foreign particles are present in the water circulation device in this way, the foreign particles may adhere to the inner wall of the heat exchanger, thereby reducing the heat exchange efficiency or scratching the components in the water circulation device. For this reason, it is necessary to remove foreign particles from the circulating water in the circulation device of the air conditioning / cooling device.

  Therefore, conventionally, a foreign matter trapping device that removes foreign matter from water circulating in the water circulation device has been proposed (see, for example, Patent Document 1). Patent Document 1 discloses a foreign matter trapping device that captures a part of a flow path by providing a portion with an enlarged inner diameter and allowing foreign matter to settle.

JP 2007-32710 A

  A foreign matter catching device such as Patent Document 1 has a structure for catching foreign matter on the lower side in the vertical direction of the flow. For this reason, when the flow rate of water increases, the disturbance of the flow state of water increases, trapped foreign matter is rolled up, and the trapping efficiency decreases.

  The present invention has been made to solve the above-described problems, and an object of the present invention is to provide a foreign matter trapping device that can efficiently trap foreign matter, a circulation device using the same, and a heating device. To do.

  The foreign matter capturing device according to the present invention is provided with a fluid inlet and an outlet above the inlet, and is provided between a cylindrical container having an inner diameter larger than the inlet, and the inlet and outlet in the cylindrical container. And a top plate formed with a passage through which fluid passes from the outlet to the outlet.

  According to the foreign matter trapping apparatus according to the present invention, since the top plate is provided between the inlet and the outlet of the cylindrical container, even if fluid flows in at a large flow rate, the height to the top plate is set as the fluid running section. As a result, the fluid flow state is prevented from being disturbed, the foreign matter accumulated on the top plate is prevented from being rolled up, and the foreign matter can be efficiently captured.

It is a circuit diagram which shows an example of the circulation apparatus using the foreign material capture | acquisition apparatus which concerns on Embodiment 1 of this invention. It is a schematic diagram which shows an example of the foreign material acquisition apparatus which concerns on Embodiment 1 of this invention. It is a schematic diagram which shows an example of the state of the inlet_port | entrance in the foreign material acquisition apparatus of FIG. It is a schematic diagram which shows the modification of the foreign material capture apparatus which concerns on Embodiment 1 of this invention. 3 is a graph showing the relative value of the rate of decrease in foreign matter concentration when the height between the bottom surface of the cylindrical container and the top plate is changed in the foreign matter catching device of FIG. 2. 3 is a graph showing the relative value of the rate of decrease in foreign matter concentration when the linear velocity of water flowing into a cylindrical container is changed in the foreign matter trapping device of FIG. It is a schematic diagram which shows Embodiment 2 of the foreign material capture apparatus which concerns on this invention. It is a schematic diagram which shows Embodiment 2 of the foreign material capture apparatus which concerns on this invention. It is a schematic diagram which shows Embodiment 3 of the foreign material capture apparatus which concerns on this invention. It is a schematic diagram which shows Embodiment 4 of the foreign material acquisition apparatus which concerns on this invention. It is a schematic diagram which shows Embodiment 4 of the foreign material acquisition apparatus which concerns on this invention. It is a schematic diagram which shows Embodiment 5 of the foreign material capture | acquisition apparatus which concerns on this invention. It is a schematic diagram which shows Embodiment 5 of the foreign material capture | acquisition apparatus which concerns on this invention. It is a schematic diagram which shows Embodiment 6 of the foreign material capture apparatus which concerns on this invention. It is a schematic diagram which shows Embodiment 7 of the foreign material capture | acquisition apparatus which concerns on this invention. It is a schematic diagram which shows Embodiment 8 of the foreign material acquisition apparatus which concerns on this invention. It is a schematic diagram which shows Embodiment 9 of the foreign material capture | acquisition apparatus which concerns on this invention. It is a schematic diagram which shows the state of the inlet_port | entrance of the foreign material capture apparatus of FIG. It is a circuit diagram which shows another example of the circulation apparatus using the foreign material capture | acquisition apparatus which concerns on this invention. It is a circuit diagram which shows another example of the circulation apparatus using the foreign material capture | acquisition apparatus which concerns on this invention. It is a circuit diagram which shows another example of the circulation apparatus using the foreign material capture | acquisition apparatus which concerns on this invention. It is a circuit diagram which shows another example of the circulation apparatus using the foreign material capture | acquisition apparatus which concerns on this invention.

Embodiment 1 FIG.
DESCRIPTION OF EMBODIMENTS Hereinafter, embodiments of a foreign matter trapping device and a circulation device using the same will be described with reference to the drawings. FIG. 1 is a circuit diagram showing an example of a circulation device using a foreign matter trapping apparatus according to Embodiment 1 of the present invention. The circulation device 1 in FIG. 1 is used, for example, in an air-conditioning apparatus that performs a cooling operation, and is cooled in the pump 2, a cooling unit 3 that cools water that is a fluid sent from the pump 2, and the cooling unit 3 The air conditioning device 4 that performs air conditioning using the water that has been used and the tank 5 that stores the water that has flowed out of the air conditioning device 4 are connected by piping.

  In the circulation device 1 of FIG. 1, the same water circulates in the circulation device 1, so that parts with weak corrosion resistance may corrode. Then, corrosion products are formed from the parts and circulate in the circuit together with the circulating water. Therefore, a foreign matter catching device 10 is provided between the pump 2 and the tank 5, and the foreign matter catching device 10 catches the foreign matter circulating in the circulation device 1, thereby keeping the circulating water clean and the heat of the foreign matter. Prevents sticking to the exchanger and scratching parts in the circuit.

  In addition, although the example which installed the foreign material capture apparatus 10 in the front | former stage of the pump 2 was shown in FIG. 1, you may install anywhere in a circulation apparatus. Desirably, it is preferably installed on the outlet side of the foreign matter generation source. For example, it may be installed on the outlet side of the air conditioner 4. As described above, by arranging the foreign material capturing device 10 at the outlet of the foreign material generation source, even if huge particles are discharged from the generation source, the foreign material can be captured before circulating in the circulation device 1. .

  FIG. 2 is a schematic diagram showing an example of a foreign matter trapping apparatus according to Embodiment 1 of the present invention. The foreign matter trapping apparatus 10 in FIG. 2 is formed with a cylindrical container 11 having a water inlet 11a and an outlet 11b provided above the inlet 11a, and a passage opening 12a through which water flowing from the inlet 11a to the outlet 11b passes. A top plate 12. The cylindrical container 11 is installed upright in the vertical direction (arrow Z direction) so as to have a height H, for example.

  In the cylindrical container 11, an inlet 11a is provided on the side surface 11s on the bottom surface 11x side, and an outlet 11b is provided on the side surface 11s on the upper surface 11y side. The inner diameter φb of the cylindrical container 11 is formed larger than the inner diameter φin of the inlet 11a. Each of the inlet 11a and the outlet 11b is connected to a circulation circuit through a pipe. The position of the outlet 11b is not limited as long as it is above the top plate 12 of the cylindrical container 11. However, in view of the years of use of the foreign matter trapping device 10, the foreign matter DT accumulated on the top plate 12 is removed from the outlet 11b. It is necessary to arrange at a position that does not reach the height of 11b, and it is preferable that the position has a margin.

  Moreover, although the case where the inlet 11a and the outlet 11b are provided in the side surface 11s is illustrated, it is not limited thereto, and may be provided on the bottom surface 11x and the upper surface 11y, respectively. Alternatively, the inlet 11a may be provided on the bottom surface 11x and the outlet 11b may be provided on the side surface 11s, or the inlet 11a may be provided on the side surface 11s, and the outlet 11b may be provided on the upper surface 11y. Further, the inlet 11 a and the outlet 11 b may be provided at any position of the cylindrical container 11. For example, when the inlet 11 a and the outlet 11 b are provided on the side surface 11 s of the cylindrical container 11, the inlet 11 a may be provided at the center portion in the width direction of the cylindrical container 11 or may be provided at the end. Good. When the inlet 11a and the outlet 11b are provided on the bottom surface 11x and the upper surface 11y, respectively, it may be connected to any position on the bottom surface 11x of the cylindrical container 11.

  FIG. 3 is a schematic diagram showing an example of the state of the entrance in the foreign matter trapping apparatus of FIG. In FIG. 3, the inlet 11 a is provided at the end of the cylindrical container 11 in the width direction so as to be tangential. Then, the water flowing in from the inlet 11 a flows along the inner wall of the cylindrical container 11. In this way, the inlet 11a is connected from the tangential direction, so that a swirling flow is generated inside the cylindrical container 11, and a vortex is formed at the center in the cylindrical container 11.

  The top plate 12 of FIG. 2 is formed in a disk shape, for example, and is disposed inside the cylindrical container 11. The top plate 12 is provided between the inlet 11 a and the outlet 11 b in the cylindrical container 11, and the cylindrical container 11 is partitioned into a lower region Rd and an upper region Ru by the top plate 12. For example, a circular passage port 12 a is formed in the top plate 12, and the passage port 12 a is formed at the center of the cylindrical container 11 and the top plate 12. In addition, although the passage port 12a has illustrated about the case where it forms in the center of the top plate 12, it should just be arrange | positioned in the position of the top plate 12 without being limited to this. Further, the diameter φm of the passage port 12a is formed to be greater than the inner diameter φin of the inlet 11a.

  Here, in FIG. 2, the inlet 11 a is illustrated as being provided on the bottom surface 11 x side of the cylindrical container 11, but is not limited thereto, and may be located below the top plate 12. FIG. 4 is a schematic diagram showing a modified example of the foreign matter trapping apparatus according to Embodiment 1 of the present invention. For example, it may be difficult to provide the inlet 11a in the vicinity of the bottom surface 11x depending on the installation position of the foreign substance capturing device 10 in the circulation device. At this time, as long as the position is lower than the top plate 12 of the cylindrical container 11 as shown in FIG.

  An example of the operation of the foreign object capturing apparatus will be described with reference to FIGS. First, water containing foreign matter passes through the inlet 11 a and flows into the lower region Rd of the cylindrical container 11. Then, the water proceeds vertically upward and flows into the upper region Ru of the cylindrical container 11 through the passage 12 a of the top plate 12. In particular, as shown in FIG. 3, when the inlet 11 a is connected from the tangential direction, a swirling flow is generated in the lower region Rd of the cylindrical container 11, and a vortex is formed in the central portion in the cylindrical container 11.

  In the lower region Rd, water is less disturbed in the flow state and flows into the passage port 12a. The flow path is once contracted at the passage port 12a and the linear flow velocity increases, but flows into the upper region Ru of the top plate 12 while the disturbance of the flow state is relaxed. When a swirl flow is generated in the lower region Rd, the foreign matter is attracted to the vortex, so that the foreign matter can be efficiently sent to the passage port 12a located at the center of the top plate 12. In the upper region Ru, the disturbance of the flow state of the water is relaxed compared to the lower region Rd side of the cylindrical container 11, so that the sedimentation rate of the foreign matter exceeds the linear flow velocity of the water, and the sedimentation and separation of the foreign matter occurs. And the clean water from which the foreign material was removed is discharged | emitted from the exit 11b. As described above, the top plate 12 is disposed between the inlet 11a and the outlet 11b of the cylindrical container 11, thereby preventing stirring of foreign matters caused by water flowing into the sedimentation separation portion, and efficiently sinking foreign matters. Separation can be performed.

  Here, the height position Hm from the bottom surface 11x of the top plate 12 is preferably installed at a position higher than the inner diameter φb of the cylindrical container 11, and more preferably at least twice the inner diameter φb of the cylindrical container 11 ( Hm> 2φb). By increasing the distance from the bottom surface 11x of the cylindrical container 11 to the top plate 12, it is possible to provide a run-up section for alleviating disturbance in the flow state of water, and the flow state caused by continuous inflow of water. Disturbance can be mitigated and sedimentation separation can be caused above the top 12.

  In order to evaluate the influence of the height position Hm between the bottom surface 11x of the cylindrical container 11 and the top plate 12, a test was conducted by assembling a circulation device in which the foreign matter trapping device 10 was connected to a tank, an agitator (not shown), and a pump. . At this time, in the circulation device, 20 L of water charged with iron oxide particles having an average particle diameter of 0.5 μm at a concentration of 100 mg / L is stirred using a stirrer and circulated at a flow rate of 8 L / min using a pump. It was.

  FIG. 5 is a graph showing the relative value of the rate of decrease in foreign matter concentration when the height between the bottom surface of the cylindrical container and the top plate is changed in the foreign matter catching device of FIG. In FIG. 5, the horizontal axis indicates a value (= Hm / φb) obtained by dividing the height position Hm between the bottom surface 11x of the cylindrical container 11 and the top plate 12 by the inner diameter φb of the cylindrical container 11, and the vertical axis indicates trapping of foreign matter. The relative value of the concentration decrease rate by the foreign matter capturing device 10 when the concentration decrease rate when the device 10 is not used is set to 1 is shown. Further, in the foreign matter capturing apparatus 10, the values of the inner diameter φb of the cylindrical container 11 and the height position Hm of the top plate 12 are set to 0.25 ≦ Hm / φb ≦ 1.8. In addition, since iron oxide particles adhere to the hose, pump, flow meter, etc. of the circulation device, the concentration decreases slightly even when the foreign matter trapping device is not used.

  As shown in FIG. 5, as the value of Hm / φb increases, the concentration decreasing rate tends to increase, and an inflection point is formed at Hm / φb = 1.0. In the range of Hm / φb <1, the height position Hm is insufficient to alleviate the disturbance of the flow state, and the effect of capturing foreign matter on the top plate 12 is small. On the other hand, in the range of Hm / φb ≧ 1, the effect of alleviating the disturbance of the flow state is increased, the effect of capturing the foreign material is increased, and the rate of decrease in the foreign material concentration by the foreign material capturing device 10 can be greatly improved.

  Therefore, it is preferable that Hm / φb ≧ 1 (= Hm ≧ φb), and it is more desirable that Hm / φb> 2 (= Hm> 2φb). Thereby, by providing a running section between the bottom surface 11x of the cylindrical container 11 and the top plate 12, the disturbance of the fluid state can be mitigated and a further foreign matter capturing effect can be exhibited.

  Moreover, in order to increase the trapping efficiency of the foreign matter trapping apparatus 10 of FIGS. 2 to 4, the linear flow velocity of water inside the cylindrical container 11 is decreased by increasing the inner diameter φb of the cylindrical container 11 and widening the cross-sectional area. Good. The linear flow rate of water is a value obtained by dividing the flow rate by the cross-sectional area of the cylindrical container 11 that is a flow path. When the inner diameter φb is large, the linear flow rate upward in the vertical direction of water becomes small, and the sedimentation rate of the foreign matter exceeds the linear flow rate of water, so that the effect of sedimentation separation occurs. On the other hand, in the vicinity of the inlet 11a and in the vicinity of the bottom surface 11x of the cylindrical container 11, since the water continuously flows and the foreign matter is stirred, the effect of sedimentation separation due to the expansion of the inner diameter φb does not occur. Therefore, sedimentation does not occur on the bottom surface 11x of the cylindrical container 11. In the lower region Rd, a running section is provided to alleviate the turbulence of the flow state. Therefore, the turbulence of the water flow state can be reduced in the upper region Ru above the top plate 12. Therefore, in the upper region Ru, the upward linear flow velocity of water becomes smaller than the sedimentation speed of the foreign matter, and the foreign matter settles on the top plate 12.

  Here, in order to confirm the relationship between the flow rate of water and the trapping speed of foreign matter, the following test was performed. Assemble a tank, stirrer, pump, foreign matter trapping device, and circulation device equipped with a flow meter, put iron oxide particles with an average particle size of 0.5 μm into 20 L water at a concentration of 100 mg / L, and stir using a stirrer Then, the inside of the circulator was circulated at a linear flow rate of 0.013 to 0.093 m / s (flow rate of 4 to 28 L / min) at a portion where the inner diameter of the cylindrical container was enlarged using a pump. The foreign matter catching device 10 used at this time is set to a height position Hm = 160 mm from the bottom surface 11x to the top plate 12 and an inner diameter φb = 80 mm.

  FIG. 6 is a graph showing the relative value of the decrease rate of the foreign matter concentration when the linear velocity of the water flowing into the cylindrical container is changed in the foreign matter trapping apparatus of FIG. The horizontal axis in FIG. 6 represents the linear flow velocity, and the vertical axis represents the concentration decrease rate when the concentration decrease rate is 1 when the flow rate is 0.027 m / s without using the foreign substance capturing device 10. It represents the relative value. Since iron oxide particles adhere to the hose, pump, flow meter, and the like of the circulation device, the concentration decreases slightly even when the foreign matter capturing device 10 is not used.

  As shown in FIG. 6, in the range larger than the linear flow velocity = 0.066 m / s, the relative value of the concentration decrease rate did not change at about 1.1, and the effect of the foreign matter capturing apparatus 10 could not be exhibited. On the other hand, in the range where the linear flow velocity is equal to or less than 0.066 m / s, the relative value of the concentration decreasing rate tends to increase, and it can be seen that the foreign matter capturing effect of the foreign matter capturing apparatus 10 can be exhibited. That is, in the range where the linear flow velocity is 0.066 m / s or less, the settling velocity of iron oxide particles having an average particle diameter of 0.5 μm exceeds the linear flow velocity of water upward in the vertical direction and settles on the top plate 12. Desirably, the relative value of the rate of decrease in density is greater than 2 and not more than 0.035 m / s.

  The linear flow velocity of water is a value obtained by dividing the flow rate of water by the cross-sectional area of the cylindrical container 11 and depends on the inner diameter φb of the cylindrical container 11. Therefore, in order to capture iron oxide having an average particle diameter of 0.5 μm, the linear flow velocity is 0.066 m / s or less, preferably 0.035 m / s or less, in accordance with the flow rate of the circulation device 1 to be used. The inner diameter φb of the cylindrical container 11 may be determined.

  According to the first embodiment, since the top plate 12 is provided between the inlet 11a and the outlet 11b inside the cylindrical container 11, the upward flow rate of water even when water flows in at a large flow rate. And the height to the top plate 12 becomes a running section, and the disturbance of the water flow state is eased toward the top plate 12. Therefore, when water containing foreign matter reaches the top plate 12, the foreign matter accumulates on the top plate 12. Further, since the disturbance of the water flow state is alleviated, the foreign matter deposited on the top plate 12 is not rolled up. Thereby, the capture | acquisition efficiency of the foreign material of the whole apparatus can be improved.

  Further, as shown in FIG. 2, when the top plate 12 is provided at a position where the height position Hm from the bottom surface 11x of the cylindrical container 11 is larger than the inner diameter φb of the cylindrical container 11, the water flow state is disturbed. A run-up section will be secured for relaxation. For this reason, even if a vortex is formed in the lower region Rd, the vortex is very small in the upper region Ru, so that it is possible to suppress the foreign matter on the top plate 12 from being rolled up.

  Further, as shown in FIG. 3, when the inlet 11 a is provided so as to allow fluid to flow in from the tangential direction of the side surface 11 s of the cylindrical container 11, a swirling flow is generated in the lower region Rd. Therefore, the foreign matter can be efficiently sent to the passage port 12a located at the center of the top plate 12.

Embodiment 2. FIG.
7 and 8 are schematic views showing a second embodiment of the foreign matter trapping apparatus according to the present invention. 7 and 8, parts having the same configuration as that of the foreign material capturing apparatus 10 in FIG. 1 are denoted by the same reference numerals and description thereof is omitted. 7 and 8 is different from the foreign material capturing apparatus 10 in FIG. 1 in the configuration of the top plates 22A and 22B.

  The top plate 22A in FIG. 7 and the top plate 22B in FIG. 8 have a substantially conical shape that is inclined such that an angle θ1 formed between the upper surface and the inner wall of the cylindrical container 11 is less than 180 °. The top plate 22A of FIG. 7 has a conical shape in which the angle θ1 is less than 90 ° and is convex upward. In this case, the settled foreign matter flows into and accumulates in the upper space formed between the top plate 12 and the inner wall of the cylindrical container 11, so that the captured foreign matter can continue to be retained. In particular, even when the foreign matter catching device 10 as a whole is tilted, foreign matter can be prevented from flowing into the outlet 11b and the passage port 12a and being discharged out of the foreign matter catching device 10. When the angle θ1 is 90 °, the top plate 12 is as shown in FIG.

  The top plate 22B of FIG. 8 has a conical shape such that the angle θ1 is greater than 90 °, and the top plate 22A is convex downward. When the angle θ1 exceeds 90 °, a part of the settled foreign matter slides on the top surface of the top plate 12, and a force that falls on the passage port 12a is applied. However, in the lower region Rd, the disturbance of the water flow state is alleviated, so that the foreign matter accumulated on the top plate 12 is not rolled up, and the foreign matter can be prevented from flowing out of the cylindrical container 11. 7 and 8 exemplify the case of a rotationally symmetric shape with respect to the center of the cylindrical container 11 having a conical shape, it may have a rotationally asymmetric shape.

  Even in the case of the second embodiment, as in the first embodiment, even if water flows in at a large flow rate, the disturbance of the flow state of water is reduced toward the top plate 12, and foreign matter is removed in the upper region Ru. In addition to sedimentation and separation, it is possible to suppress the foreign matter accumulated on the top 12 from being rolled up, and to improve the foreign matter capturing efficiency of the entire apparatus.

Embodiment 3 FIG.
FIG. 9 is a schematic diagram showing a third embodiment of the foreign matter capturing apparatus according to the present invention. 9, parts having the same configuration as that of the foreign material capturing apparatus 10 in FIG. 1 are denoted by the same reference numerals and description thereof is omitted. The foreign matter catching device 30 in FIG. 6 is different from the foreign matter catching device 10 in FIG. 1 in that an open / close valve 31 is attached to the side surface 11 s of the cylindrical container 11.

  As shown in FIG. 9, the cylindrical container 11 has a discharge port 11p formed at a position higher than the top plate 12 on the side surface 11s, and an open / close valve 31 is attached to the discharge port 11p. The opening / closing valve 31 is normally closed and is opened when the foreign matter on the top plate 12 is discharged, and the foreign matter captured by the top plate 12 is discharged from the opening / closing valve 31 to the outside of the cylindrical container 11. The

  According to the third embodiment, since the foreign matter captured on the top plate 12 can be discharged from the opening / closing valve 31, the manufacturing method of the foreign matter capturing device 10 can be maintained and the maintainability can be improved. it can. That is, the capture limit amount of the foreign matter captured on the top plate 12 depends on the inner diameter φb of the cylindrical container 11 and the height between the top plate 12 and the outlet 11b. If it is necessary to reduce the size of the foreign matter catching device 10 due to the location of the foreign matter catching device 10 or if the amount of foreign matter generated in the circulation device 1 is excessive, the foreign matter catching limit amount can be easily reached. Loses the effect of capture in a short period of time. Therefore, the cylindrical container 11 is provided with a discharge port 11p, and a path through which the captured foreign matter is discharged out of the cylindrical container 11 is provided. The opening / closing valve 31 is periodically opened, so that foreign matter can be discharged out of the cylindrical container 11 before reaching the capture limit amount.

  In addition, in the said Embodiment 3, although illustrated about the case where the top plate 12 is formed in disk shape, as shown in FIG.7 and FIG.8, the top plates 22A and 22B are on the inner wall of the cylindrical container 11. FIG. The discharge port 11p and the opening / closing valve 31 may be attached to the foreign matter capturing device 20 that is inclined with respect to the device.

Embodiment 4 FIG.
10 and 11 are schematic views showing Embodiment 4 of the foreign material capturing apparatus according to the present invention. 10 and 11, parts having the same configurations as those of the foreign matter catching apparatuses 10 and 20 in FIGS. 2 and 5 are denoted by the same reference numerals and description thereof is omitted. The foreign matter catching device 40 of FIGS. 10 and 11 is different from the foreign matter catching devices 10 and 20 of FIGS. 2 and 5 in that an upper guide member 41 is provided at the passage port 12a.

  As shown in FIGS. 10 and 11, a cylindrical upper guide member 41 extending upward is provided at the edge of the passage opening 12 a of the top plate 12. The upper guide member 41 prevents water traveling toward the upper region Ru from colliding with the foreign matter DT accumulated on the top plate 12 and rolling up the foreign matter. For this reason, it can suppress that the foreign material DT accumulate | stored on the top plate 12 flows out from the exit 11b. In particular, as shown in FIG. 11, when the top plate 22B is inclined downward, the upper guide member 41 can reliably prevent foreign matter from falling from the top plate 12 to the lower region Rd. In addition, although the case where the upper guide member 41 is provided on the top plate 22B inclined downward as shown in FIG. 11, the upper guide member 41 is provided on the top plate 22A inclined upward as shown in FIG. May be provided.

Embodiment 5. FIG.
12 and 13 are schematic views showing Embodiment 5 of the foreign matter capturing apparatus according to the present invention. In the foreign matter catching apparatus 50 shown in FIGS. 12 and 13, parts having the same configuration as the foreign matter catching apparatus 10 shown in FIG. 12 and 13 is different from the foreign material capturing apparatus 10 in FIG. 2 in that a lower guide member 51 is provided in the passage port 12a.

  In the foreign object capturing device 50 of FIG. 12, a cylindrical lower guide member 51 extending downward is provided at the edge of the passage port 12 a of the top plate 12. Due to the presence of the lower guide member 51, the disturbance of the water flow state in the lower guide member 51 is alleviated, and the disturbance of the water flow state when the water flows out from the passage port 12a to the top plate 12 is suppressed. . For this reason, it can prevent colliding with the foreign material DT accumulated on the top plate 12, and winding up a foreign material.

  In the foreign substance capturing device 50 of FIG. 13, both an upper guide member 41 extending upward from the passage opening 12a of the top plate 12 and a lower guide member 51 extending downward are provided. The upper guide member 41 and the lower guide member 51 may be separate or integrated. Thereby, while the upper guide member 41 prevents the collision with the water and the foreign material DT which passed the passage port 12a, the lower guide member 51 eases disturbance of the flow state of water. As a result, the foreign matter DT can be prevented from being rolled up, and the foreign matter capturing efficiency can be further increased.

  12 and 13 exemplify the case where the lower guide member 51 is provided on the disk-shaped top plate 12, the bottom plates 22A and 22B are inclined to the bottom as shown in FIGS. The guide member 51 may be provided, or both the upper guide member 41 and the lower guide member 51 may be provided. Further, the discharge port 11p and the opening / closing valve 31 shown in FIG. 9 may be attached to the foreign matter capturing device 50 of FIGS.

Embodiment 6 FIG.
FIG. 14 is a schematic diagram showing a sixth embodiment of the foreign matter trapping apparatus according to the present invention. In the foreign matter catching device 60 in FIG. 14, parts having the same configuration as the foreign matter catching device 10 in FIG. The foreign matter catching device 60 of FIG. 14 is different from the foreign matter catching device 10 of FIG. 1 in that the top plate 62 has a protrusion 62a on the upper surface.

  14 has a tapered shape, for example, and a plurality of protrusions 62a are provided on the top plate 62. The protrusion 62a can be captured when the protrusion 62a is reached before foreign matter settles and accumulates on the top plate 12. In addition, the shape of the protrusion part 62a is not limited to this, For example, a cylinder or a rectangular parallelepiped may be sufficient.

  Further, according to the sixth embodiment, by providing the projection 62a on the top plate 62, the foreign matter capturing efficiency can be further improved. In addition, in FIG. 14, although the case where the lower guide member 51 is provided in the disk-shaped top plate 12 is illustrated, the protrusions 62a are provided on the inclined top plates 22A and 22B as shown in FIGS. It may be provided. Further, the discharge port 11p and the opening / closing valve 31 shown in FIG. 9 may be attached to the foreign matter capturing device 60 of FIG.

Embodiment 7 FIG.
FIG. 15 is a schematic diagram showing a seventh embodiment of the foreign matter catching apparatus according to the present invention. In the foreign matter catching device 70 of FIG. 15, parts having the same configuration as the foreign matter catching device 10 of FIG. The foreign matter catching device 70 in FIG. 15 is different from the foreign matter catching device 10 in FIG. 1 in that unevenness 72 a is formed on the top surface of the top plate 72.

  In the foreign matter catching device 70 of FIG. 15, for example, a rectangular parallelepiped convex portion and a concave portion formed between the convex portions are formed on the top surface of the top plate 72. In addition, although illustrated about the case where the unevenness | corrugation 72a has a rectangular parallelepiped shape, it does not need to be limited to it and may have an acute angle or a rounded shape. Further, as a method of forming the unevenness 72a, processing such as surface polishing or sandblasting, or a material for forming the unevenness may be bonded.

  According to the seventh embodiment, the unevenness 72 a is provided on the top surface of the top plate 12, so that the foreign matter being settled is captured when it reaches the convex portion before it accumulates on the top plate 12. Can do. Further, the foreign matter reaches the concave portion of the top plate 12 and forms a foreign matter DT. Therefore, it is possible to easily capture the foreign matter on the top plate 12 and to prevent the foreign matter DT on the top plate 12 from rolling up. 15 illustrates the case where the unevenness 72a is provided on the disk-shaped top plate 72, but the unevenness 72a may be provided on the inclined top plates 22A and 22B as shown in FIGS. Good. Further, the discharge port 11p and the opening / closing valve 31 shown in FIG. 9 may be attached to the foreign matter capturing device 70 of FIG.

Embodiment 8 FIG.
FIG. 16 is a schematic diagram showing the eighth embodiment of the foreign matter catching apparatus according to the present invention. In addition, in the foreign material capturing apparatus 80 of FIG. 16, the site | part which has the same structure as the foreign material capturing apparatus 10 of FIG. 1 is attached | subjected, and the description is abbreviate | omitted. The foreign matter catching device 80 in FIG. 16 is different from the foreign matter catching device 10 in FIG. 1 in the shape of the top plate 82.

  The top plate 82 of FIG. 16 has a curved shape bent upward from the inner wall of the cylindrical container 11 toward the center, and a passage port 12a is formed at the center. Then, it can prevent that the water which goes to the upper area | region Ru collides with the foreign material DT accumulated on the top plate 12, and rolls up a foreign material, and the foreign material DT accumulate | stored on the top plate 12 flows out from the exit 11b. Can be suppressed. Even in the case of the above-described eighth embodiment, as in the first embodiment, even when water flows in at a large flow rate, the disturbance of the flow state of water is reduced toward the top plate 12, and foreign matter is generated in the upper region Ru. And the foreign matter accumulated on the top plate 12 can be prevented from being rolled up, and the trapping efficiency of the whole device can be improved. 16 may be provided with the discharge port 11p and the opening / closing valve 31 shown in FIG.

Embodiment 9 FIG.
FIG. 17 is a schematic view showing a ninth embodiment of the foreign matter catching apparatus according to the present invention, and FIG. 18 is a schematic view showing a state of the entrance of the foreign matter catching apparatus of FIG. 17 and 18 have the same configuration as that of the foreign matter capturing apparatus 10 in FIG. 1, and the description thereof is omitted. 17 and 18 is different from the foreign material capturing apparatus 10 in FIG. 1 in that a rectifying member 91 for forming a swirling flow is provided in the cylindrical container 11.

  As shown in FIGS. 17 and 18, an inlet 11 a is provided at the approximate center in the width direction of the cylindrical container 11, and a rectifying member 91 is installed at a position facing the inlet 11 a. The rectifying member 91 rectifies the water flowing in from the inlet 11 a into a flow along the inner wall of the cylindrical container 11. In this case, it is preferable that the passage 12a of the top plate 12 is located at the center. As a result, a swirling flow is formed in the lower region Rd of the cylindrical container 11. In addition, in FIG.17 and FIG.18, although illustrated about the case where the inlet_port | entrance 11a is provided in the approximate center, you may provide in any position of the side surface 11s.

  According to the ninth embodiment, by providing the rectifying member 91 that forms a swirling flow in the lower region Rd of the cylindrical container 11, a vortex is formed in the central portion of the cylindrical container 11, and foreign matter is attracted to the vortex. Therefore, the foreign matter can be efficiently sent to the passage 12a of the top plate 12, and the capture efficiency can be increased. Further, similarly to the first embodiment, the top plate 12 can suppress the foreign matter accumulated on the top plate 12 from being rolled up. In FIG. 17, the disk-shaped top plate 12 is illustrated as having a disk shape, but may be tilted top plates 22 </ b> A and 22 </ b> B as illustrated in FIGS. 7 and 8. Further, the discharge port 11p and the opening / closing valve 31 shown in FIG. 9 may be attached to the foreign matter capturing device 90 of FIGS.

Embodiment 10 FIG.
19 to 22 are circuit diagrams showing another example of the circulation device using the foreign substance capturing device according to the present invention. 19 to 22 exemplify the case where the foreign matter capturing apparatus 10 of FIGS. 2 and 3 is used, the foreign matter capturing apparatus shown in FIGS. 6 to 18 may be used. A circulation device 100 in FIG. 19 is, for example, a heating device that heats a room, and includes a pump 101, a heat exchanger 102 that performs heat exchange between water sent from the pump 101 and refrigerant, and a heat exchanger 102. The heating device 103 that heats the water that has been heat-exchanged in the room, and the heating heat exchanger 104 that heats the room using the water that has been heated in the heating device 103. The heat exchanger 102 is connected to the heat source unit 105 and exchanges heat between the gas refrigerant supplied from the heat source unit 105 and water.

  The foreign matter capturing apparatus 10 is connected between the heating heat exchanger 104 and the pump. By introducing the foreign matter trapping device 10 into the circulation device 100, foreign matter generated in the circulation device 100 is caught, the circulating water is kept clean, and the foreign matter adheres to the heat exchanger and is attached to the components in the circuit. Can be prevented from being damaged. The installation position of the foreign object capturing device 10 is not limited to the installation position shown in FIG. 19, and may be installed anywhere in the circulation device, but at the outlet of the heat exchanger 104 for heating, which is a source of foreign objects. Even if huge particles are discharged from the generation source, they can be captured before circulating in the circulation device.

  In the circulation device 100 in FIG. 19, the case where the foreign matter trapping device 10 and the heating device 103 are provided separately is illustrated, but the foreign matter trapping device 10 is built in like the circulation device 110 in FIG. 20. Alternatively, the heating device 103 may be used. Furthermore, as in the circulation device 120 of FIG. 21, a hot water supply heat exchanger 121 may be connected instead of the heating heat exchanger 104 to provide hot tap water. By introducing the foreign material capturing device 10 into the circulation device 120, the foreign material generated in the circulation device 120 is captured, the circulating water is kept clean, the foreign material adheres to the heat exchanger, and the components in the circuit. Can be prevented from being damaged.

  The circulation device 130 in FIG. 22 is a circulation device having two circuits in which the heating heat exchanger 104 and the hot water supply heat exchanger 121 in FIG. 20 are connected in parallel. Also in this case, the circulating water can be kept clean by introducing the foreign matter capturing device 10. In addition, in the circulation devices 120 and 130 of FIG. 21 and FIG. 22, a heating device 103 incorporating the foreign matter capturing device 10 shown in FIG. 20 may be introduced.

  The embodiment of the present invention is not limited to the above embodiment, and various modifications can be added. For example, in FIG. 1, the case where the foreign material capturing device 10 is incorporated independently into the circulation device is illustrated, but the structure of the foreign material capturing device 10 may be incorporated into an existing part. For example, some hot water heaters have a cylindrical heating device, and by providing the top plate 12 inside the heating device, the foreign matter capturing effect described in the first embodiment is exhibited. It can be installed easily without replacing with a new device without a space for a new device.

  1, 100, 110, 120, 130 Circulating device, 2 pump, 3 cooling section, 4 air-conditioning equipment, 5 tank, 10, 20, 30, 40, 50, 60, 70, 80, 90 Foreign matter capturing device, 11 cylindrical container , 11a inlet, 11b outlet, 11p discharge port, 11s side surface, 11x bottom surface, 11y top surface, 12, 22A, 22B, 62, 72, 82 Top plate, 12a passage port, 31 open / close valve, 41 upper guide member, 51 lower guide Member, 62a protrusion, 72a unevenness, 91 rectifying member, 100 circulation device, 101 pump, 102 heat exchanger, 103 heating device, 104 heat exchanger for heating, 105 heat source machine, 121 heat exchanger for hot water supply, DT foreign matter, Hm height position, Rd lower region, Ru upper region, θ1 angle, φb inner diameter of cylindrical container, φin inlet inner diameter, φm passage Diameter.

Claims (13)

A fluid inlet and a cylindrical container having an outlet provided above the inlet and having an inner diameter larger than the inlet;
A foreign matter trapping device comprising: a top plate provided between the inlet and the outlet in the cylindrical container, and having a passage through which a fluid passes from the inlet to the outlet.   The foreign object capturing device according to claim 1, wherein the top plate is provided at a height position where a height position from a bottom surface of the cylindrical container is larger than an inner diameter of the cylindrical container.   The foreign object capturing device according to claim 1, wherein the top plate is provided so that an angle between an upper surface and an inner wall of the cylindrical container is 90 ° or less. In the upper part of the top plate of the cylindrical container, a discharge port is provided,
The foreign matter capturing device according to claim 1, further comprising an open / close valve connected to the discharge port.   The foreign matter catching device according to claim 1, wherein an upper guide member extending upward is provided at a passage opening of the top plate.   The foreign matter capturing apparatus according to claim 1, wherein a lower guide member extending downward is provided at a passage opening of the top plate.   The foreign object capturing device according to claim 1, wherein the top plate has a protrusion on an upper surface.   The foreign object capturing device according to claim 1, wherein the top plate has an uneven surface formed on an upper surface.   The foreign material capturing apparatus according to claim 1, wherein the inlet is provided so as to allow fluid to flow in from a tangential direction of a side surface of the cylindrical container.   The guide member which is installed in the position facing the said entrance in the inside of the said cylindrical container, and rectifies | straightens the fluid which flowed in from the said inlet into the flow along the inner wall of the said cylindrical container. The foreign matter catching device according to 1.   The circulation device provided with the foreign material catching device according to any one of claims 1 to 10.   The circulation device according to claim 11, further comprising a heating device that heats the circulating fluid, wherein the foreign matter trapping device is built in the heating device.   The cylindrical heating apparatus which has the same structure as the foreign material capture | acquisition apparatus of any one of Claims 1-10 inside.

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