JPH04208157A - Jet flow generating nozzle structure - Google Patents

Abstract

PURPOSE:To enable a great amount of air to be mixed in bath water by forming a swirling chamber for generating a swirl flow in the bath water upstream of an ejector part. CONSTITUTION:In a nozzle body 70 is formed a swirling chamber 78 for generating a swirling flow of air forced from a pump in bath water. Thus, the air is jetted by a centrifugal force accompanying the swirling flow while diffusing in an ejector section E. Large negative pressure is generated by jet of diffused air in the bath water so that air in the ejector section E can be effectively attracted.

Description

[Detailed description of the invention] (b) Industrial application field The present invention is a jet generation nozzle hl? Regarding construction.

(B) Conventional technology Conventionally, there has been a bathtub in which a jet generating nozzle with a built-in ejector is disposed on the side wall of the bathtub so that bath water mixed with air bubbles can be spouted into the bathtub. teeth,
As shown in FIGS. 5 and 6, a nozzle body (202) arranged outside the bathtub wall (201) and connected to a pump;
A tightening sleeve (203) is fixed by inserting the bathtub wall (20+) between it and the nozzle body (202), and a sleeve (203) is inserted into the nozzle body (202) so that the outer peripheral part is connected to the air passage (20+).
04) and a cylindrical water conduit (201'i) whose inner periphery becomes the discharge passage (205), A cover that is fixed to ``i'' (20G) and has a bath water inlet (20?) on the outer periphery (
208) to connect the bath water suction r+ (2o7) to the bath temperature extraction rl (216) via the bath water passage (215), and to connect it to the pump discharge side of the nozzle body (202). A discharge passageway (21) leading from the section (209) into the bath h"i
0) is provided with an ejector part (2+2) that forms a constriction part (2+1) consisting of a plurality of orifices (2+3) to reduce the discharge passage (210) and suck air, thereby creating a bath containing bubbles in the bathtub. It is constructed so that hot water can be spewed out.

In addition, there is also a constriction part (not shown) in which the cross-sectional area of the bath water flow path is reduced in the upper part.

Further, the connection portion (209) is connected to the nozzle body (202).
From the opposite side of the bathtub to the axis of the pump (2)
14).

Note that (217) and (219) are threaded portions, and (220) is a flange.

(c) Problems to be Solved by the Invention However, the above-mentioned conventional jet nozzle 1 nozzle t+'4 construction only has a constriction part formed inside to reduce the passage, or Since the passage is simply reduced by forming a plurality of orifices 17 in the water pipe, the bath water pumped by the pump is ejected in a straight line without being diffused in the water conduit.

Therefore, there is a problem in that the air suction force is low and it is not possible to mix sufficient melon air into the bath water.

In addition, a nozzle body (202) is attached to the connection part (209).
Since the piping (214) is connected from the opposite side of the bathtub on the axis of the tub, a large space is required to accommodate the piping (21, 4), which may limit the installation of the bathtub.

(d) To solve the problem, in the present invention, a water conduit equipped with an ejector part is inserted concentrically into a cylindrical nozzle body attached to the side wall of a bathtub. In the jet flow generating nozzle, the interior of which serves as an ejection path for bath water, and the gap between the water conduit and the nozzle body as a suction path for bath water, a swirling chamber that generates a swirling flow in bath water is formed on the upstream side of the ejector portion. The present invention provides a jet flow generating nozzle structure characterized by the following features.

In addition, the inlet of the bath water into the swirling chamber is formed perpendicular to the bath water swirling axis of the swirling chamber, and the air chamber of the ejector part is formed so as to surround the outer periphery of the water conduit pipe, and a plurality of air chambers are formed. It is also characterized in that it is formed in communication with the inside of the water conduit through the communication hole.

(Po) Functions and Effects According to the present invention, by forming a swirling chamber inside the nozzle body that generates a swirling flow in the hot water pumped by the pump, the centrifugal force accompanying the swirling flow causes diffusion in the ejector section. It is squirted while doing so.

The jet of the bath water diffused in this manner generates a strong negative pressure, which effectively sucks the air inside the ejector part and allows a large amount of air to be mixed into the bath water.

-5= In addition, by forming the inlet for the bath water into the swirl chamber perpendicular to the bath water rotation axis of the swirl chamber, the above-mentioned bath water swirl can be strengthened. It is possible to connect the bathtubs at approximately right angles without using joints such as.

Since the nozzle body is installed approximately perpendicular to the side wall of the bathtub, the bath water piping can be connected parallel to the side wall of the bathtub, reducing the piping space and easing restrictions on bathtub installation. be able to.

In addition, the air chamber of the ejector part is formed to surround the outer periphery of the water pipe and communicate with the inside of the water pipe through a plurality of communication holes, so that air can be sucked in from the entire circumference of the water pipe. Can you bathe in a large amount of air? 'Can be mixed into A.

(f) Examples Embodiments of the present invention will be described based on the drawings.

Figure 1 shows a bathtub (+3) equipped with a jet generation nozzle (N) according to the present invention, a hot water supply R (8) connected to the jet generation nozzle (N), and a bath water circulation function section (I?). (It shows 1η formation.

First, the bathtub (B) will be explained.

The bathtub (+1) is shaped like a box with two sides open.
1 nozzle (N) on the side wall of the same bathtub (B)
has been set up.

Next, the water heater (8) will be explained.

The water heater (A) is composed of a combustion part (1) having a substantially J-shaped cylinder, and a heat exchange part (2). Gases (jF, The first communicating with the supply pipe (3),
Second burners (4) and (5) are provided.

In the figure, (6) is the main valve, (7) is the governor 1 proportional valve for adjusting the calorific value of each burner (4) and (5), and (8) (
9) are the first and second switching valves, (10) is the spark plug, (1
1) is a flame rod for detecting the ignition state of the burner, (12) is a temperature fuse, and (B) is a flame rod.

The heat exchange section (2) includes a water supply pipe (22) and a hot water outlet pipe (23) at both ends of a heat receiving pipe (21) that meandered back and forth within the heat exchange section (2).
), the water supply pipe (22) is connected to a water source such as a water supply, and the hot water pipe (23) is connected to a bath water circulation function section (R), which will be described next.

With the above configuration, water from the water supply pipe (22) is transferred to the heat receiving pipe (
21) While flowing inside, the hot water is heated by the heat of the first and second burners (4) and (5), and the hot water is circulated from the outlet pipe (23) to the bath water circulation function part (R).
The amount of hot water available in the kitchen, etc. can be increased.

In the figure, (24) is the connection port for discharging hot water from the kitchen, etc., (25) is the water supply temperature sensor→no, (26) is the water supply (
Rental →)゛, (27) is high limit bimetal, (
28) is the hot water temperature sensor, (29) l; L water m iA]
1111 Valve, (30) l; Hi amount sensor, (3
1) is a hot water supply valve that turns the hot water supply to the bathtub (B) ON-OFF, and (32) is a reverse 11- valve that is used to check that hot water or water flows backward from the bathtub (B) side to the water heater (8) side. Valve, (3
3) is the bath water flow switch that monitors the bath water circulation.

The bath water circulation function section (R) includes a pump (40) for circulating bath water, and a pump (40) and a bath tf! i (+(
) and the water heater (A), the suction port (41) of the pump (40) is connected to the hot water supply pipe (4).
2) between the check valve (8z) and the bath water suction piping 43
) to the suction passage of the jet generating nozzle (N) which will be explained next, and the discharge port (44) of the same pump (40) is connected to the jet generating nozzle (N) through the bath water discharge piping (45). connected to the passage.

The water heater (Δ) and the bath water circulation function section (1?) are housed in an integrated case (C).

In Fig. 1, (50) is a remote controller which includes buttons for starting and stopping the pump (40) and the Kinuta water machine (A), buttons for adjusting the amount of hot water and temperature, and air h1.1. + Equipped with an air volume adjustment button, etc. connected to the J control valve (60) (・■ part (51),
A display section (52) is provided.

(53) is a control board connected to functional parts such as the motor controller (50), each valve, each sensor, and ignition plaque.

Next, the jet flow generating nozzle (N) will be explained.

The jet generating nozzle (N) of the present invention has a diameter of 11η so that it can be installed both in a general bathtub having a side wall with an average thickness and a thick wall bathtub with a thick side wall. The case where the generation nozzle (N) is attached to a general bathtub will be explained with reference to FIGS. 2 to 4.

= 9 - (70) is a nozzle body, which is formed into a cylindrical shape with a bottom, and is installed on the outside of the nozzle mounting hole (B2), which is installed in the side wall (old) of the bathtub (1' ()). =I is kicked out.

That is, the negative end of the nozzle body (70) is opened 1], a female thread (71) is formed on the inner circumferential surface of the nozzle body (70), and the bathtub side wall (B
Nozzle removal hole 1 (B2) is inserted by the flanged sleeve (72) screwed into the female thread (71) from the inside of [).
is fixed on the outside.

(73) is a male thread formed on the outer circumferential surface of Francie L sleeve (72), (74) and (75) are packing,
(76) is a slip washer.

Also, inside the nozzle body (70) there is an ejector part (■
ζ).

That is, as shown in FIGS. 2 to 4, the other end of the nozzle body 70) is closed off 17 by the rear wall (77) to form a swirling chamber (78) having a substantially disc-shaped space. , rear wall (77
) is formed with a substantially disk-shaped bulge (79) at the center of its inner surface to increase the strength of the swirling flow.

Further, the peripheral wall of the turning chamber (78) is extended forward (80), and a stepped portion (81) is provided to enlarge the inner diameter of the extended portion (80). There is a spout in the center (82
) is formed into a substantially disc-shaped front wall (83), which is engaged with the stepped portion (81), and the rear end of the water conduit (84) is attached to the front surface of the front wall (83). They are brought into contact with each other so that bath water pumped by the pump (40) is spouted from the spout (82) into the water conduit (84).

(l12a) is a roundness to prevent contraction 111.

The water guide pipe (84) has a substantially cylindrical shape, and has a female thread (Ill) formed on the inner periphery of the end on the bathtub side, and a communication port (85) of 1 in number n·(1) formed in the peripheral wall of the other end. By forming an enlarged diameter part (86) in front of the communication port (85) and bringing the outer periphery of the enlarged diameter part (86) into close contact with the inner circumferential surface of the extension part (80), the water conduit pipe 115 air chambers (87) are formed surrounding (84) and communicating with the inside of the water conduit pipe 84).
87) is communicated with an air suction port (106) formed in the peripheral wall of the nozzle body (70).

A fixing washer (
88) with machine screws (89), the front wall (83) is secured between the washer (88) and the step (81).
) and the water conduit (84) are fixed to the nozzle body (70) in a sandwiched manner.

In addition, the front end of the water guide W (84) is provided with a substantially cylindrical throat holder (90) at the rear end, and a ball socket 1-(91) is installed at the front end of the throat holder (90). Insert the rear end of the throw 1- (92) formed into a substantially spherical shape into the socket (91).
Throat fixing 6-I (93) screwed into the inner end of
), the throw 1-(92) is -1-1;

In addition, a substantially truncated cone-shaped groove (=1 unit (94)) expanding in the rear direction is formed integrally with the throat holder (90) on the front end edge of the ball saw getter I- (91), and the (94
) An engagement protrusion (95) formed on the inner peripheral surface of the base is formed on the outer circumference of the flange (. (9o) is fixed to the nozzle body (7o).

A bath water spout hole (97) passes through the space 6-1- (92) from the rear end to the front end.
7) has a diameter that tapers toward the front from the rear end to about 2/3 of the total length, and from about 2/3 of the total length to -1,2
-,- The diameter increases in a tapered shape toward the front end, and the front end of the throw 1- (92) has a bath water spout hole (97) and an external A plurality of communicating holes (98) are configured.

In addition, a substantially truncated cone-shaped cover (99) is covered on the inside of the bath tfl of the holder (94) of the throat holder (90), and a substantially cylindrical cover (99) is formed at the base of the cover (99). A filter net (Ion) is stretched, a bath water suction port (+01) is formed at the base of the tray (94), and the inner circumferential surface of the Francie τj sleeve (72) and the outer circumferential surface of the throat holder (90) are connected. , and the inner peripheral surface of the nozzle body (70) and the outer peripheral surface of the extension part (80) form a water absorption passage (+02).
), the inside of the bathtub (n) is communicated with an outlet (+03) formed at the lower rear end of the nozzle body (70).

In addition, there is an inlet (+04) at the upper rear end of the nozzle body (70).
By forming the inlet (+04) to communicate with the swirling chamber (78) from one side, the flow line of the bath water from the inlet (+04) is approximately [ ! I am exchanging IL. Note that (105) is an O-ring.

The bath water discharge pipe '1T (45) of the bath water circulation function section (1?) is connected to the inlet (+04) of the nozzle body (70), and the bath water suction reporter (43) is connected to the outlet (+03). and connect the air h1 control valve (60) to the air intake port (106).
) is connected to an air suction pipe (61) extending from the air intake pipe (61).

The embodiment of the present invention is configured as described above, and when filling hot water for bathing, the remote controller is used to set the filling flow rate, etc., and then when the water heater (A) is started, the hot water temperature sensor (28 ), water volume 531 section valve (
29) The water heater (
A) governor (= 1 proportional valve (7), 1st, 2nd switching valve (
8) Control (9) and the hot water supply valve (31) to inject hot water heated to the set temperature into the bath tW (+3).

When the amount of hot water filled in the bathtub reaches the set flow rate, the hot water amount sensor (30) counts up and automatically stops dispensing hot water into the bathtub.

In addition, in order to squirt bath water mixed with air bubbles into the bathtub (+3), operate the remote controller (51) to operate the pump (40), and then
(B) Drain the bath water inside the cover (99).
Bath water suction port (101) at the base of the throat holder (90) and base (94) - Water suction passage (1 [12)] inside the nozzle body (70) - At the rear end of the middle nozzle body (70) The outflow n(+03)--bath water discharge piping (43) is sucked into the pump (40) in this order, and is pressurized by the same pump (4o), and the same pump (40)-bath water discharge piping (45)- The swirling chamber (78) in the order of inflow +1 (+04) of the nozzle body (70)
A strong swirling flow of bath water is generated within the swirling chamber (78).

Then, the bath water in the swirling chamber (78) is spouted into the water guide type (84) while being diffused in a substantially circular shape with the spout (82) as the point m due to the centrifugal force of the swirling flow. Negative pressure is generated in the water conduit (84) due to the ejector effect of the warm jet.
1. Shi, Air Wi, “J Sesuke (60) - Air Inhalation Clothes (
61) Air is sucked into the water conduit (84) in the order of - air inlet (toe) - air chamber (87) and series of ports (85),
” - It mixes with the jet of bath water and becomes bath water mixed with bubbles,
Slow 1-(92) to bath h! The water will erupt into the bath water in H1l).

Here, to explain the swirling flow of bath water in this embodiment, the bath water flowing into the swirling chamber (78) flows approximately perpendicularly to the axis of the swirling chamber (78), as explained above in I-. Therefore, if there is a very slight asymmetry in the iXE line of the inflowing bath water due to the flow path shape or an accidental cause, the swirling chamber (78
) A weak swirling flow is generated in the bath water in the swirling chamber (78), and this weak swirling flow causes the streamlines of the bathwater entering the swirling chamber (78) to be deflected in the swirling direction [2. A weak swirling flow develops into an extremely strong swirling flow in a short period of time.

In addition, since the inner diameter of the spout (82) is smaller than the inner diameter of the swirling chamber (78), as the bath water approaches the spout (82), the diameter of the swirl becomes smaller, so the tangential velocity of the swirl flow becomes smaller. This speed increases the centrifugal force acting on the hot water spouting from the spout (82), and the hot water can be effectively diffused.

However, 2. If the swirling flow of bath water in the swirling chamber (78) becomes too strong, the centrifugal force of this swirling flow becomes too strong, making it difficult for the bath water to flow toward the spout (82), resulting in a pressure drop. The amount of hot water gushing out decreases.

Therefore, in this embodiment, a substantially disk-shaped bulge (79) is formed at the center of the inner surface of the rear wall (77) of the swirling chamber (78) to reduce the frictional resistance to the swirling flow by (1"j). - This prevents the excessive development of swirling flow.

In particular, in the present invention, a swirling chamber (78) is formed inside the nozzle body (70) to generate a swirling flow in the bath water pumped from the pump (40), and a swirling chamber (78) is formed inside the nozzle body (70) to surround the outer periphery of the water-conducting type (84). Moreover, by forming an air chamber (87) that communicates with the inside of the water conduit (84) through a large number of communication holes (85), the bath water gushing into the water conduit (84) can be diffused. , a strong negative pressure can be generated in the water conduit (<84), and a sufficient amount of air can be mixed into the spouting bath water.

In addition, by forming the inlet (104) on the side peripheral wall of the nozzle body (70) perpendicular to the axis of the body (70), the bath water pipe can be connected to the side wall of the bathtub (11) with the top fi. hand,
Piping space can be reduced, and restrictions on bathtub installation can be relaxed.

[Brief explanation of the drawing]

Figure 1 shows a bathtub equipped with a jet flow generating nozzle according to the present invention and a connection to the same nozzle.
The figure is an explanatory longitudinal cross-sectional view of the jet generating nozzle, and Figure 3 is the second
Fig. 1-1 is a sectional view taken along the line, Fig. 4 is a sectional view taken along the Cross-sectional view. (B): Bathtub (old): Side wall (In, Ejector part (N): Jet generation nozzle (70): Nozzle body (78): Swirl chamber (84): Water guide pipe (85): Communication hole ( 87): Air chamber (104): Inlet = 18- Fig. 4 Fig. 3 Fig. 6 204 / ○, 200 21F5 - to - 202

Claims (1)

[Claims] 1) A water conduit (84) equipped with an ejector part (E) is concentrically inserted into a cylindrical nozzle body (70) attached to the side wall (B1) of the bathtub (B). The inside of the water conduit (84) is used as a spouting path for the bath water, and the water conduit (84) and the nozzle body (
The jet generating nozzle (70) uses the gap between the
In N), the jet flow generating nozzle structure is characterized in that a swirling chamber (78) for generating a swirling flow in the bath water is formed upstream of the ejector portion (E). 2) The jet flow generating nozzle structure according to claim 1, wherein the inlet (104) for the bath water into the swirl chamber (78) is formed perpendicular to the bath water swirl axis of the swirl chamber (78). . 3) The air chamber (87) of the ejector part (E) is surrounded by the outer periphery of the water conduit (84) and has a plurality of communication holes (87).
5) The jet flow generating nozzle structure according to claim 1, wherein the jet flow generating nozzle structure is formed to communicate with the inside of the water conduit pipe (84) via the water conduit (84).