KR20100023729A - Hot water boiler - Google Patents

Abstract

PURPOSE: A hot water boiler is provided to easily connect outer pipes and simplify structure due to small size and small volume. CONSTITUTION: A hot water boiler(100) comprises a water tank(110), a U-shaped heating pipe(120), a metal pipe heater unit assembly(130), a plate-shaped heat exchange unit(150), a first and a second connection pipe(140,160), and circulating pumps(170-1,170-2). The U-shaped heating pipe draws in, transfers, and discharges the water inside the water tank. The metal pipe heater unit assembly heats the water flowing through a space between the heating pipes. The heat exchange unit transfers the high heat from the water of an outer flow path to the hot water of an inner flow path. The first connection pipe transfers the water by connecting the heating pipe and the heat exchange unit. The second connection pipe connects the heat exchange unit and the water tank.

Description

Hot Water Boiler {HOT WATER BOILER}

The present invention relates to a hot water boiler, and more particularly has improved superiority in many aspects, such as high thermal efficiency, small size and volume, ease of connecting external piping, it is suitable for use in demand such as a bathroom using a large amount of hot water To a hot water boiler.

In general, a boiler is a device that heats water with a heating means and supplies it to a demand place, and is classified into an electric boiler, a gas boiler, an oil boiler, and the like according to the fuel used by the heating means.

Among them, electric boilers are convenient to use because they do not need to be replenished with fuel as compared to other boilers, and they are easy to use, have a relatively simple structure, maintain cleanliness, and have a relatively high risk of accidents caused by overheating. It is widely used in many advantages such as low.

In this regard, the importance of thermal efficiency has become more important in recent years due to the drastic rise in fuel costs.

In particular, the use of a large amount of hot water in the bathhouse is increasing the cost of producing hot water day by day, causing management deterioration.

Therefore, by producing hot water with excellent thermal efficiency, it is possible to reduce the maintenance cost, the manufacturing cost is low, the initial purchase cost is low, and the size and volume of the bath only can be installed smoothly in a small space Hot water boiler is needed.

The present invention was devised to solve the above-mentioned problems, while excellent thermal efficiency can reduce the maintenance cost as much as possible, and the manufacturing cost can be low due to the simplification of configuration and small size, and the small size and volume It is an object of the present invention to provide a hot water boiler which can be suitable for miniaturization and can easily connect external pipes and reduce the length and volume of pipes required for the connection.

The above objects and various advantages of the present invention will become more apparent from the preferred embodiments of the present invention by those skilled in the art.

Hot water boiler of the present invention for achieving the above object, the reservoir is stored in the circulation water; A U-shaped heating tube which is provided to be immersed in a vertical direction in the reservoir in a long direction, and is discharged after being sucked into the circulating water in the reservoir; A metal tube heater unit assembly for heating the circulating water flowing through the space between the heating tube and positioned in a vertical portion of the heating tube; A plate heat exchange unit configured to transfer high heat from the circulating water flowing from the heating tube to the hot water flowing from the circulating water flowing through the outer flow path; A first connection pipe connecting the heating tube and the plate heat exchange unit to transfer the circulation water; A second connection pipe connecting the plate heat exchange unit and the water reservoir to transfer the circulation water; And a circulation pump provided on a circulation path to impart a transfer force to the circulation water. It includes.

Preferably, the heating tube may be provided so that two or more parallel.

Also preferably, the metal tube heater unit assembly may include at least one metal tube heater provided with a heating wire and a filler in the metal protective tube and generating heat according to the energization of the heating wire; And a plurality of spaced out portions of the metal tube heater spaced apart from each other along a length direction to block the flow of the circulating water, and an area erased portion in which a portion of the outer portion is deleted so as to face different directions. A horizontal heat transfer plate through which the circulating water passes; It may be configured as.

Also preferably, the metal tube heater unit assembly may include a fastening plate member provided in a horizontal direction to engage an upper end of the metal tube heater and covering the outer surface of the reservoir; A vertical rod provided in the vertical direction so as to be suspended from the fastening plate member; And a spacing tube member spaced apart from the horizontal heat transfer plate by repeatedly inserted into an outer side of the vertical rod. It may be configured to further include.

Also preferably, the metal tube heater is straight or U-shaped, at least two or more may be provided in a set.

Also preferably, the horizontal heat transfer plate may be repeatedly provided such that the direction of the area eraser alternates by 180 °.

Also preferably, the plate type heat exchange unit may include: a first outer plate closing the outer side of one side and having a circulating water inlet and a circulating water outlet extending outwardly from upper and lower ends, respectively; A second outer plate closing the outside of the other side and having a hot water inlet and a hot water outlet respectively extending outwardly from the upper and lower ends thereof; Two sheets are inserted in parallel so as to be spaced apart at regular intervals on both sides between the first and second outer plates, and a circulation water flow path is formed between the first and second outer plates and hot water flows therebetween. A heat transfer plate forming a furnace; Communication pipes provided at the upper and lower ends to horizontally connect the two heat transfer plates so as to connect between the circulation water flow paths on both sides; And a side plate provided to close the side; It can be configured as.

Also preferably, on the heat transfer plate, the depressions and ridges may be generally formed through both sides.

Also preferably, the circulation water inlet and the hot water inlet may be provided to be spaced apart from each other at the upper and lower ends opposite to each other.

According to the present invention, it is possible to provide excellent thermal efficiency, thereby reducing maintenance costs, and by simplifying the configuration and the small size, the manufacturing cost can be low, and can be suitable for miniaturization according to the small size and volume, the external piping It is possible to achieve a great effect, such as easy connection work, and to reduce the length and volume of piping required for the connection.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a block diagram showing a hot water boiler according to a preferred embodiment of the present invention.

The hot water boiler 100 according to the present invention is provided with a reservoir 110 in which circulating water used as a heat transfer fluid is stored therein, and immersed in the reservoir 110 in a vertical direction to be circulated in the reservoir 110. The U-shaped heating tube 120 discharged after the water is sucked in and discharged therebetween is inserted into the center of the heating tube 120 and is positioned long in the longitudinal direction, and the circulating water flowing through the space between the heating tube 120 and the heating tube 120. A metal tube heater unit assembly 130 for heating, and a plate-type heat exchange unit 150 for transferring high heat to hot water flowing through the inner flow passage from the circulating water that is transferred from the heating tube 120 and flows through the outer flow passage therein; The first connection tube 140 for internally transferring the circulating water by connecting the heating tube 120 and the plate heat exchange unit 150 to communicate with each other, and between the plate heat exchange unit 150 and the reservoir 110, Connected in communication And a second connecting pipe 160 for internally transferring the circulating water, and at least one circulation pump 170-1 or 170-2 provided on the circulating path of the circulating water to give a transfer force to the circulating water.

The reservoir 110 forms a storage space therein, and a predetermined amount of circulation water used as a heat transfer fluid is stored therein.

At least one mounting hole 112 for inserting and mounting the metal tube heater unit assembly 130 from the outside is formed on the upper surface of the reservoir 110, and on one side thereof, the plate heat exchange unit 150 is transported and returned. A return port 114 through which the circulating water is introduced is formed.

In addition, a water inlet (not shown) for receiving water from the outside may be formed at a predetermined position of the reservoir 110.

The heating tube 120 has a long tube shape in which a through hole through which the circulating water of a heating target flows is formed, and the metal tube heater unit assembly 130 is inserted into the inner center of the heating tube 120 in a lengthwise direction.

The heating tube 120 has a U-shape, and as shown, the metal tube heater unit assembly 130 is inserted into the two vertical portions, respectively.

The upper surface of the U-shaped heating tube 120 is opened so that the metal tube heater unit assembly 130 is inserted, and the lower surface side thereof is closed.

In addition, an inlet hole 122 through which the circulation water in the reservoir 110 flows is formed at an upper end of one vertical part, and an outlet hole 124 through which the heated circulation water flows out is formed at an upper end of the other vertical part. do.

Of course, the inlet hole 122 may be provided with a circulating water inlet tube 122a, and the outlet hole 124 may be provided to transfer the heated circulating water to the plate-type heat exchange unit 150. The first connecting pipe 140 is connected in communication.

U-shaped heating tube 120 may be configured in multiple or more than two in parallel, in this case, two or more heating tubes 120 are connected to communicate internally through the communication portion 126, the communication portion 126 ) Connects the outlet hole 124 of the U-shaped heating tube 120 provided at the front end and the inlet hole 122 of the U-shaped heating tube 120 provided at the rear end.

As such, when two or more U-shaped heating tubes 120 are used in parallel, the circulating water transferred through the inside may flow to repeat the downward flow and the upward flow.

The metal tube heater unit assembly 130 is inserted into each of the vertical portions in the heating tube 120 and is positioned long in the longitudinal direction so that the circulating water of the heating target flows through the space between the heating tube 120 and the heating tube 120.

Specifically, the metal tube heater unit assembly 130 has a heating line 132b and a filler 132c in the metal protective tube 132a, as shown in the perspective view of FIG. 2, the schematic sectional view of FIG. 3, and the separated perspective view of the main portion of FIG. 4. ) Is provided and at least one metal tube heater 132 that generates heat according to the energization of the heating line 132b, and a horizontal plate which is provided on the outside of the metal tube heater 132 to be spaced apart from each other along the longitudinal direction of the circulation water The area elimination part 134a, which blocks a flow and deletes an area of an outer part thereof, is alternately provided to face different directions so that the circulating water flows in a zigzag form.

In addition, the metal tube heater unit assembly 130 is provided in a horizontal direction to couple the upper end of the metal tube heater 132 so that the metal tube heater unit assembly 130 is inserted through the mounting hole 112 on the reservoir 110 is mounted. When fastened to the upper surface of the reservoir 110, the fastening plate member 136 to close the mounting hole 112, the vertical rod 138 is provided in the vertical direction to be suspended to the fastening plate member 136, It may further include a spaced apart tubular member 139 that is inserted into the outer side of the vertical rods 138 closely and spaced apart from the horizontal heat transfer plates 134.

The metal tube heater 132 includes a metal protective tube 132a in which the upper end portion of the metal tube heater 132 is sealed by a sealing stopper, etc., a heating line 132b provided in the metal protective tube 132a and generating heat according to the current flow, and a heating line ( Connection terminals 132b-1 coupled to both ends of each of the ends of 132b and connected to an external power supply facility through an externally exposed portion and then externally exposed through an open upper end side of the metal protective tube 132a. And a filler 132c which is filled in an empty space in the metal protective tube 132a to provide insulation and heat storage functions.

The metal tube heater 132 is not particularly limited, such as a straight, U-shaped, multiple bent, etc., but the U-shaped in the drawings.

And, the metal tube heater 132 may be provided in a plurality of sets as shown.

Of course, the metal tube heater 132 and the vertical rod 138 may be provided to suspend the other member for closing the mounting hole 112 of the reservoir 110 without using the fastening plate member 136.

The horizontal heat transfer plate 134 is a thin horizontal metal plate, and has an area deletion portion 134a formed by removing a predetermined area of an outer portion thereof.

Since the plurality of horizontal heat transfer plates 134 are provided in the heating tube 120 to be spaced apart from each other by a predetermined distance along the longitudinal direction, the area deletion portions 134a are alternately provided to face different directions, thereby circulating Let the numbers flow in a zigzag pattern.

That is, when the area deletion portion 134a of the first horizontal heat transfer plate 134 is provided to face to the right direction, the area deletion portion 134a of the next second horizontal heat transfer plate 134 is provided to face to the left direction, The direction may be provided to be repeatedly changed by 180 °.

Of course, the direction of the area deleting unit 134a does not necessarily need to be changed to 180 °, and the change angle may be implemented in any number of combinations. It can be made to be heated enough while being moved to a state, it can be excellent in terms of heating efficiency.

The horizontal heat transfer plate 134 is preferably formed such that its outer peripheral surface is in intimate contact with the inner circumferential surface of the heating tube 120, which does not form a gap between the heating tube 120, so that the circulating water goes straight through the gap. To be blocked.

Since the horizontal heat transfer plate 134 is provided to be in intimate contact with the outer surface of the metal tube heater 132, the horizontal heat transfer plate 134 may receive high heat from the metal tube heater 132 more efficiently according to the contact.

The vertical rods 138 are coupled to hang on the fastening plate member 136 to be provided along the lengthwise direction of the inside of the heating tube 120, and a plurality of horizontal heat transfer plates 134 are fitted therein.

The spaced tubular member 139 is in the form of a tube of a very small size, and is inserted into the vertical rods 138 and is provided between the horizontal heat transfer plates 134 fitted with respect to the vertical rods 138. (134) spaced apart by that length.

The action of the plurality of horizontal heat transfer plate 134 is to block the progress of the circulating water flowing along the longitudinal direction, while the circulating water exits through the area deleting portion 134a portion provided in different directions. As a result, the circulating water flows in a zigzag form.

Therefore, since the flow rate of the heating target circulating water is appropriately decelerated as it is blocked, and flows in a zigzag form in such a decelerated state, the circulating water to be heated is sufficiently sufficiently heated by the high heat emitted from the metal tube heater 132. As can be, the circulating water can be sufficiently in contact with the metal tube heater 132 for a very long time.

Accordingly, even if the length of the metal tube heater 132 is made very short or the number of the metal tube heaters 132 is small, the circulating water can be sufficiently heated.

In addition, since the horizontal heat plate 134 is made of a metal material and is in contact with the metal tube heater 132, the horizontal heat transfer plate 134 is in contact with or positioned around the first heat state, which is itself heated by heat transferred from the metal tube heater 132. By heating the circulating water, the circulating water can be heated more effectively.

That is, the metal tube heater 132 and the horizontal heat transfer plate 134 cooperate to heat the circulating water in various directions, so that the circulating water can be heated very quickly and sufficiently.

According to him, the circulating water may be heated evenly by the horizontal heat transfer plate 134 along with the zigzag-extended length, so that the circulating water may be sufficiently stirred in the process.

The plate heat exchange unit 150 is discharged from the heating tube 120 in a heated state to the high heat is transferred from the circulating water flowing through the inner outer flow path to the hot water flowing through the inner flow path to generate hot water in a high temperature state.

Specifically, the plate heat exchange unit 150, as shown in Figures 5 to 8, the circulation water cooled while passing through the inside and the circulation water inlet 152a through which the circulation water in a heated state is closed The first outer plate 152 which is provided so that the outflowing circulating water outlet 152b extends outward from the upper and lower end positions, respectively, and the hot water into which the water for cooling water in a cooled state that is supplied while closing the other side is supplied. A second outer plate 154 provided with a shape in which the hot water outlet 154b through which the hot water is converted into a high temperature state while passing through the inlet 154a and the inside thereof extends outwardly from the upper and lower positions thereof; Two sheets are inserted in parallel between the first and second outer plates 152 and 154 so as to be spaced apart at regular intervals on both sides, and the circulation water flows between the outer and outer plates 152 and 154. The heat transfer plate is formed to form a circulating water flow path (hw) and a hot water flow path (lw) through which hot water flows between them, and the ridges 156a and the depressions 156b are formed to be generally repeated on both sides thereof. 156 and side plates 158 provided to close the open side surfaces between the first and second outer plates 152 and 154.

The plate heat exchange unit 150 has a compact shape in the form of a hexahedron.

The plate heat exchange unit 150 has a structure in which the first outer plate 152, the second outer plate 154, and the two heat transfer plates 156 are stacked in parallel with each other at regular intervals, and the side plates 158. There are a total of five plates, including), and the plates are all metal plates.

Inlet / outlet 152a, 152b through which the circulating water flows in and out of the plate heat exchange unit 150 is provided on the same side, and similarly, inlet / outlet 154a, 154b through which hot water flows in and out is provided on the same side. If provided, the connection of the external pipe to the inlet / outlet (152a, 152b, 154a, 154b) can be performed very easily, while reducing the required length and volume of the external pipe for the connection.

That is, since the circulating water should be supplied in a direction toward the reservoir 110, the side where the circulating water inlet / outlet 152a and 152b is provided faces the reservoir 110 and hot water should be supplied in a direction toward the demand place. Therefore, the side where the hot water inlet / outlet 154a and 154b is provided is directed toward the maximum demand place, and the need to bend the external pipe for connection can be prevented as much as possible.

In addition, the circulating water inlet 152a into which the circulating water is introduced and the hot water inlet 154a into which the hot water is introduced are provided to be spaced apart from each other at the upper and lower ends opposite to each other. The hot water outlet 154b through which the hot water flows out is also provided to be spaced apart from the upper and lower ends opposite to each other.

The heat transfer plate 156 is provided with two sheets inserted in parallel so as to be spaced apart at regular intervals on both sides between the first and second outer plates 152 and 154, and each heat transfer plate 156 and each outer plate 152 are provided. , 154 is formed between the circulating water flow path (hw) for flowing circulating water, and between the two heat transfer plate 156 is formed a hot water flow path (lw) for flowing hot water flow, One or more communication tubes 159 are provided at the upper and lower ends of the inner side so as to horizontally connect the two heat transfer plates 156 so as to connect the circulation water flow paths hw.

The hot water inlet / outlet 154a and 154b is provided to communicate with the hot water flow path lw, and the circulation water inlet / outlet 152a and 152b is provided to communicate with the circulation water flow path hw.

As illustrated in FIG. 8, the heat transfer plate 156 is formed such that the ridges 156a protrude convexly on both sides thereof and the depressions 156b concave recessed.

The raised portion 156a and the recessed portion 156b may be formed by repeated punching on one side and the other side, and when the raised portion 156a is formed on one side at the same position, the other side The depressions 156b are formed on the phases, and the arrangement of the ridges 156a and the depressions 156b does not have a big relationship whether it is regular or irregular.

The raised portion 156a and the recessed portion 156b increase the heat exchange area to improve heat exchange efficiency.

That is, the high heat from the circulating water is transferred to the circulating water flow path hw and the hot water flow path lw formed on both sides with the heat transfer plate 156 therebetween, respectively. In the heat transfer through the warm water, the ridge 156a and the depression 156b on the heat transfer plate 156 increase the heat transfer area to increase the heat transfer efficiency.

Therefore, as the heat exchange efficiency is excellent, the size and volume can be significantly reduced.

In addition, the ridge 156a and the depression 156b also prevent the progress of the circulating water and hot water to form a turbulent flow of the circulating water and hot water, thereby providing a function of uniformly heating and cooling the circulating water and hot water. do.

The heat transfer plate 156 is basically formed of a metal material having excellent thermal conductivity and heat dissipation and good mechanical and chemical properties, and preferably, may be formed of a stainless material that can withstand high temperatures and durability.

The side plate 158 surrounds and closes the side surface between the first outer plate 152 and the second outer plate 154 on both sides, and may be coupled and integrated through welding.

The first connecting pipe 140 connects the circulating water outlet 152b on the heating tube 120 side and the circulating water inlet 152a on the plate type heat exchange unit 150 to transfer the circulating water through the inside thereof. Be sure to

The second connection pipe 160 connects the circulating water outlet 152b on the plate-type heat exchange unit 150 side and the circulating water return port 114 on the reservoir 110 side to communicate with the circulating water through the inside thereof. To be transported.

Circulation pumps 170-1 and 170-2 are " reservoir 110-heating tube 120-first connector 140-plate type heat exchange unit 150-second connector 160-low By providing a transfer force for the transfer to the circulation water circulated to form a closed circulation path of the water bottle 110, one or more may be provided at an appropriate position on the circulation path.

Preferably, one is provided on the side of the circulating water inlet pipe 122a positioned to be immersed in the reservoir 110, and the other may be provided on the second connection pipe 160.

In addition, the hot water to be introduced into the hot water inlet 154a of the plate heat exchange unit 150 may be supplied through an external direct water system.

In the foregoing description, it should be understood that those skilled in the art can make modifications and changes to the present invention without changing the gist of the present invention as merely illustrative of a preferred embodiment of the present invention.

1 is a block diagram showing a hot water boiler according to a preferred embodiment of the present invention,

Figure 2 is a perspective view showing a metal tube heater unit assembly provided in the hot water boiler according to a preferred embodiment of the present invention,

Figure 3 is a schematic cross-sectional view showing a metal tube heater unit assembly provided in the hot water boiler according to a preferred embodiment of the present invention,

Figure 4 is an exploded perspective view of the main portion of the metal tube heater unit assembly provided in the hot water boiler according to a preferred embodiment of the present invention,

5 is a perspective view illustrating an exterior of a plate heat exchange unit provided in the hot water boiler according to the preferred embodiment of the present invention;

6 is a cross-sectional view taken along the line AA ′ of FIG. 5;

7 is a cross-sectional view taken along line BB ′ of FIG. 5;

8 is a perspective view showing a heat transfer plate provided in the plate heat exchange unit provided in the hot water boiler according to a preferred embodiment of the present invention;

9 is an exploded perspective view illustrating a laminated structure of a plate heat exchange unit provided in the hot water boiler according to the preferred embodiment of the present invention.

<Description of the symbols for the main parts of the drawings>

100: hot water boiler 110: reservoir

112: mounting hole 114: return hole

120: heating tube 122: inlet hole

122a: inlet pipe 124: outlet hole

126: communication part 130: metal tube heater unit assembly

132: metal tube heater 132a: metal protective tube

132b: heating wire 132b-1: connection terminal

132c: Filler 134: Horizontal heat transfer plate

134a: area deletion portion 136: fastening plate member

138: vertical rod 139: spaced pipe member

140: first connector 150: plate heat exchange unit

152: first outer plate 152a: circulating water inlet

152b: circulating water outlet 154: second outer plate

154a: hot water inlet 154b: hot water outlet

156: heat transfer plate 156a: ridge

156b: depression 158: side plate

159: communication tube 160: second connector

170-1, 170-2: circulating pump hw: circulating water flow path

lw: hot water flow furnace

Claims (9)

Reservoir with circulating water stored therein; A U-shaped heating tube which is provided to be immersed in a vertical direction in the reservoir in a long direction, and is discharged after being sucked into the circulating water in the reservoir; A metal tube heater unit assembly for heating the circulating water flowing through the space between the heating tube and positioned in a vertical portion of the heating tube; A plate heat exchange unit configured to transfer high heat from the circulating water flowing from the heating tube to the hot water flowing from the circulating water flowing through the outer flow path; A first connection pipe connecting the heating tube and the plate heat exchange unit to transfer the circulation water; A second connection pipe connecting the plate heat exchange unit and the water reservoir to transfer the circulation water; And A circulation pump provided on a circulation path to impart a transfer force to the circulation water; Hot water boiler comprising a. The method of claim 1, The heating tube, Hot water boiler, characterized in that provided with two or more parallel. The method of claim 2, The metal tube heater unit assembly, At least one metal tube heater provided with a heating wire and a filler in the metal protective tube and generating heat according to the energization of the heating wire; And It is provided with a plurality of spaced apart from each other along the longitudinal direction on the outside of the metal tube heater to block the flow of the circulating water and the area deletion portion is deleted so that the area of the outer portion is deleted to face different directions through the area deletion portion Horizontal heat transfer plate to allow the circulation water; Hot water boiler, characterized in that consisting of. The method of claim 3, wherein The metal tube heater unit assembly, A fastening plate member provided in a horizontal direction to couple the upper end of the metal tube heater to span the outer surface of the reservoir; A vertical rod provided in the vertical direction so as to be suspended from the fastening plate member; And Spacing tube member spaced apart from the horizontal plate by repeatedly inserted into the outer side of the vertical rod; Hot water boiler, characterized in that further comprises. The method of claim 4, wherein The metal tube heater, Straight or U-shaped, Hot water boiler, characterized in that provided with at least two or more sets. The method of claim 4, wherein The horizontal heat transfer plate, Hot water boiler, characterized in that repeatedly provided so that the direction of the area eraser alternates by 180 °. The method according to claim 1 or 3, The plate heat exchange unit, A first outer plate which closes one side and is provided in a form in which the circulating water inlet and the circulating water outlet extend from the upper and lower ends to the outside; A second outer plate closing the outside of the other side and having a hot water inlet and a hot water outlet respectively extending outwardly from the upper and lower ends thereof; Two sheets are inserted in parallel so as to be spaced apart at regular intervals on both sides between the first and second outer plates, and a circulation water flow path is formed between the first and second outer plates and hot water flows therebetween. A heat transfer plate forming a furnace; Communication pipes are provided at the upper and lower ends to horizontally connect the two heat transfer plates so as to connect between the circulation water flow paths on both sides; And A side plate provided to close the side; Hot water boiler, characterized in that consisting of. The method of claim 7, wherein The hot water boiler, characterized in that the depression and the ridges are formed on the heat transfer plate as a whole. The method according to claim 7 or 8, The hot water boiler, characterized in that the circulating water inlet and the hot water inlet are spaced apart from the upper and lower ends opposite to each other.

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