CN214529841U - Steam recovery system and energy-saving steam recovery device thereof - Google Patents

Abstract

The utility model discloses a steam recovery system and energy-conserving steam recovery unit thereof, energy-conserving steam recovery unit includes an at least steam recovery preheater, and it includes the shell and is used for the inner bag of the first liquid of splendid attire, and the outer wall interval of shell inner wall and inner bag is predetermine the interval and is formed the appearance chamber that is used for splendid attire second liquid, all be provided with admission/liquid interface and play vapour/liquid interface on inner bag and the shell, through making iron tail gas introduce inner bag or shell through admission/liquid interface, utilize the heat of iron tail gas to make first liquid or second liquid become hot to make second liquid or first liquid preheat, and then reach energy-conserving effect, can also avoid the high temperature of iron tail gas and scald pipeline and water pump. Such as: when the steam iron is used in ironing equipment, water which needs to be supplemented into the steam generator can be preheated, and the phenomenon that steam pressure is reduced too much to influence ironing effect due to the supplement of cold water when steam in the steam generator is consumed and water needs to be supplemented can be avoided.

Description

Steam recovery system and energy-saving steam recovery device thereof

Technical Field

The utility model relates to a steam generator irones technical field, in particular to steam recovery system and energy-conserving steam recovery device thereof.

Background

The ironing links used in the market mostly adopt the full steam stainless steel iron at present, and the iron has the following characteristics that the iron consists of two cavities, when in work, steam is firstly transmitted to the first cavity for storage, and the second cavity is used for heating to evaporate water into steam. When the hand-dialing switch is turned on, steam is transmitted to the air outlet cavity to dispersedly iron clothes, high-temperature condensed water is inevitably generated when the steam is stored in the first cavity due to the fact that the steam temperature is about 150 ℃, the condensed water cannot be sprayed to the surface of the clothes, the clothes are easy to mildew when stored, sales are affected, and in order to solve the problem of the condensed water, the full-steam iron bucket is generally solved by the following two methods:

1. a steam return port is reserved beside the steam inlet of the iron, a valve is installed, steam of the iron enters from the steam inlet and exits from the steam return port, the steam is circulated, and the probability of generating condensate water by the iron is reduced;

2. the steam return port of the iron is provided with a drain valve, so that water is collected and floats on a valve plate of the drain valve, and the water is discharged from the steam return pipe.

In any of the above modes, steam and condensed high-temperature water are seriously wasted, and energy consumption is greatly wasted. Thus, the prior art has yet to be improved and enhanced.

SUMMERY OF THE UTILITY MODEL

In view of the foregoing disadvantages of the prior art, an object of the present invention is to provide a steam recovery system and an energy-saving steam recovery device thereof, which can utilize the heat energy of the tail gas of the iron to heat water, so that the water entering the equipment has a certain temperature, thereby reducing the heating power of the equipment and achieving the purpose of energy saving.

For solving the technical problem, the utility model discloses following technical scheme has been taken:

the utility model provides an energy-conserving steam recovery unit of steam recovery system, includes an at least steam recovery preheater, the steam recovery preheater includes shell and the inner bag that is used for the first liquid of splendid attire, the shell cladding is outside the inner bag, and its inner wall and the outer wall interval of inner bag predetermine the interval and form the appearance chamber that is used for the splendid attire second liquid, all be provided with on inner bag and the shell and advance vapour/liquid interface and go out vapour/liquid interface.

In the energy-saving steam recovery device of the steam recovery system, the steam inlet/liquid interface of the inner container is an iron tail gas steam inlet interface and is positioned at the lower part or the bottom of the inner container, and the steam outlet/liquid interface of the inner container is an iron tail gas steam outlet interface and is positioned at the upper part or the top of the inner container; the steam/liquid inlet port of the shell is an external water source liquid inlet port and is positioned at the lower part or the bottom of the shell, and the steam/liquid outlet port of the shell is a preheating water outlet port and is positioned at the upper part or the top of the shell.

In the energy-saving steam recovery device of the steam recovery system, a steam inlet/liquid interface of the shell is an iron tail gas steam inlet interface and is positioned at the lower part or the bottom of the shell, and a steam outlet/liquid interface of the shell is an iron tail gas steam outlet interface and is positioned at the upper part or the top of the shell; the steam/liquid inlet port of the inner container is an external water source liquid inlet port and is positioned at the lower part or the bottom of the inner container, and the steam/liquid outlet port of the inner container is a preheating water outlet port and is positioned at the upper part or the top of the inner container.

In the energy-saving steam recovery device of the steam recovery system, the shell is also provided with an installation sheet.

In the energy-saving steam recovery device of the steam recovery system, the outer shell and the inner container are both stainless steel tubes.

In the energy-saving steam recovery device of the steam recovery system, the shell and the inner container are welded and fixed.

In the energy-saving steam recovery device of the steam recovery system, a heat insulation layer is arranged outside the shell.

In the energy-saving steam recovery device of the steam recovery system, at least two steam recovery preheating furnaces are arranged, and a steam outlet/liquid interface of the former steam recovery preheating furnace is connected with a steam inlet/liquid interface of the latter steam recovery preheating furnace through a steam conveying pipe; the steam outlet/liquid interface of the latter steam recovery preheating furnace is connected with the steam inlet/liquid interface of the former steam recovery preheating furnace through a water pipe.

In the energy-saving steam recovery device of the steam recovery system, heat-insulating sleeves are arranged outside the steam conveying pipe and the water conveying pipe.

A steam recovery system comprises a steam generator, an iron, an electromagnetic valve and a water pump, and further comprises an energy-saving steam recovery device of the steam recovery system, wherein a steam outlet of the iron is connected with a steam/liquid inlet of the energy-saving steam recovery device, a steam/liquid outlet of the energy-saving steam recovery device is connected with a steam inlet of an external water tank, a water outlet of the external water tank is connected with another steam/liquid inlet of the energy-saving steam recovery device sequentially through the water pump and the electromagnetic valve, and another steam/liquid outlet of the energy-saving steam recovery device is connected with a water inlet of the steam generator.

Compared with the prior art, the utility model provides a steam recovery system and energy-conserving steam recovery device thereof, wherein, energy-conserving steam recovery device is through passing through iron tail gas the steam admission/liquid interface is introduced in inner bag or shell, and the heat that utilizes iron tail gas makes first liquid or second liquid become hot to reach the purpose that makes second liquid or first liquid preheat, with reduce equipment heating power, and then reach energy-conserving effect, can also avoid scalding pipeline and water pump because of the high discharge of the temperature of iron tail gas, reduced the fault rate of equipment. During water replenishing, warm water in the latter steam recovery preheating furnace is injected into the former steam recovery preheating furnace for heat exchange, so that water entering the equipment has higher temperature, and the problems that the equipment energy consumption is too high or the equipment fails due to too large temperature difference and the ironing effect is influenced due to too large reduction of steam pressure in the steam generator when the steam consumption in the steam generator needs water replenishing can be avoided.

Drawings

Fig. 1 is a schematic sectional view of the iron tail gas entering the inner container of the energy-saving steam recycling device according to the first preferred embodiment of the present invention.

Fig. 2 is a schematic structural diagram of the energy-saving steam recovery device provided by the present invention.

Fig. 3 is a schematic view of a cross-sectional structure of the iron tail gas entering the shell of the energy-saving steam recycling device provided by the present invention.

Fig. 4 is a schematic structural diagram of an energy-saving steam recycling device according to a second preferred embodiment of the present invention.

Fig. 5 is a schematic structural diagram of the vapor recovery system provided by the present invention.

Reference is made to the accompanying drawings in which: 1. inner container 2, outer shell 30, steam/liquid inlet

40 steam/liquid outlet port 3, iron tail gas steam inlet port 4, iron tail gas steam outlet port

5. External water source inlet port 6, preheated water outlet port 7, water and steam discharging pipe

8. Delivery drain pipe 9, insulating layer 10, mounting plate 200, second liquid 100, first liquid 02, steam generator 03, iron 04, electromagnetic valve 05, water pump 06, water tank 24, steam delivery pipe 25 and water delivery pipe

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

It will be understood that when an element is referred to as being "on," "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or intervening elements may also be present.

It should be noted that the terms of orientation such as left, right, up and down in the embodiments of the present invention are only relative to each other or are referred to the normal use state of the product, and should not be considered as limiting.

Referring to fig. 1 and 2, the energy-saving steam recovery device of the steam recovery system provided by the present invention includes at least one steam recovery preheating furnace 01, the steam recovery preheating furnace 01 includes an inner container 1 and an outer shell 2 for containing a first liquid 100, the outer shell 2 is coated outside the inner container 1, and an inner wall of the outer shell and an outer wall of the inner container 1 are spaced by a predetermined distance to form a cavity for containing a second liquid 200, the inner container 1 and the outer shell 2 are both provided with a steam/liquid inlet 30 and a steam/liquid outlet 40, by introducing the tail gas of the iron into the inner container 1 or the outer shell 2 through the steam/liquid inlet 30, the first liquid 100 or the second liquid 200 is heated by using the heat of the tail gas of the iron, thereby achieving the purpose of preheating the second liquid 200 or the first liquid 100, further achieving the effect of saving energy, and further avoiding that the pipeline and the water pump are damaged by the excessive temperature of the tail gas of the iron, the failure rate of the equipment is reduced.

For example: when the energy-saving steam recovery device is used in a steam generator of ironing equipment, water needing to be added into the steam generator is preheated by utilizing tail gas of an iron, so that the preheated water has higher temperature, and the phenomenon that steam pressure in the steam generator is reduced too much to influence the ironing effect due to the fact that cold water is supplemented when steam in the steam generator is consumed and water is supplemented can be avoided.

Optionally, the steam inlet/liquid interface 30 and the steam outlet/liquid interface 40 are respectively disposed at the top or the bottom of the outer shell 2 and the inner container 1, that is, the top and the bottom of the outer shell 2 and the inner container 1 are respectively provided with an interface, the interface at the bottom (including the bottom surface or the lower portion) is used for inputting steam or inputting liquid with lower temperature, the interface at the top (including the top surface or the upper portion) is used for outputting steam or preheated liquid, and steam can be selectively introduced into the inner container or a cavity of the outer shell as required. In other words, the upper and lower parts of the shell and the inner container are respectively provided with a connector, the lower connector is used for inputting iron tail gas or water preheated by the iron tail gas, and the upper connector is used for outputting cooled iron tail gas or inputting hot water into a previous-stage (such as a steam generator) device.

For example, in specific implementation, the steam inlet/liquid port 30 of the inner container 1 is an iron tail gas steam inlet port 3 (as shown in fig. 1) and is located at the lower portion or the bottom surface of the inner container 1, and the steam outlet/liquid port 40 of the inner container 1 is an iron tail gas steam outlet port 4 and is located at the upper portion or the top surface of the inner container 1; the steam inlet/liquid interface 30 of the shell 2 is an external water source inlet interface 5 and is positioned at the lower part of the shell 2, and the steam outlet/liquid interface 40 of the shell 2 is a preheating water outlet interface 6 and is positioned at the upper part of the shell 2. The tail gas of the iron enters the inner container 1 through the tail gas steam inlet port 3 arranged at the lower part or the bottom of the inner container 1, and the principle that steam rises upwards is utilized to make the tail gas of the iron with high temperature (generally about 150 ℃) fully contact with the first liquid 100 (the first liquid 100 can be water or other liquids) in the inner container 1, the heat of the tail gas of the iron is utilized to make the first liquid 100 in the inner container 1 become hot, so as to achieve the effect of heat exchange, and thus the second liquid 200 (the second liquid 200 is water at this moment) in the shell 2 absorbs the heat of the first liquid 100 through the wall of the inner container to preheat the second liquid 200, and the temperature of the tail gas of the iron is reduced after heat exchange, and the tail gas of the iron is discharged through the tail gas steam outlet port 4 at the upper part or the top of the inner container 1, so as to ensure the pressure balance in the inner container 1.

In the use, through utilizing iron tail gas to make first liquid 100 in the inner bag 1 heat up continuously, outside water source warp the outside water source inlet port 5 of shell 2 gets into in the shell 2 by first liquid 100 heating after, through going out in liquid interface 6 input steam generator, so cycle work just in time, at the moisturizing intermittent type, accomplish the water heating of inner bag 1 in to the shell 2, make the higher liquid of temperature after adding the water in the steam generator for preheating always.

Furthermore, a water and steam discharging pipe 7 is further arranged at the bottom of the inner container 1, a water and steam discharging solenoid valve (not shown in the figure) is arranged on the water and steam discharging pipe 7, when the tail gas of the iron enters the inner container 1 and meets a low-temperature furnace body, the tail gas of the iron can be condensed to form water, the water and steam can be condensed while returning, and after the condensed water is increased, the tail gas can be discharged from the water and steam discharging pipe 7, so that the first liquid 100 in the inner container 1 always keeps a preset position.

Wherein, the lower part or the bottom of shell 2 still are provided with the drain pipe 8 that dispatches from the factory, when not using, arrange the liquid in inner bag or the shell to the greatest extent, can avoid energy-conserving steam recovery unit is in the transportation or extremely cold area frost crack shell 2, play the effect of the liquid in the clean shell 2, still be convenient for wash.

In an alternative embodiment, the steam inlet/liquid interface 30 of the outer shell 2 is an iron tail gas steam inlet interface 3 (see fig. 3) and is located at the lower part or the bottom part of the outer shell 2, and the steam outlet/liquid interface 40 of the outer shell 2 is an iron tail gas steam outlet interface 4 and is located at the upper part or the top part of the outer shell 2; the steam inlet/liquid interface 30 of the inner container 1 is an external water source inlet interface 5 and is positioned at the lower part or the bottom of the inner container 1, and the steam outlet/liquid interface 40 of the inner container 1 is a preheating water outlet interface 6 and is positioned at the upper part or the top of the inner container 1. The tail gas of the iron enters the shell 2 through the tail gas steam inlet port 3 arranged at the lower part or the bottom of the shell 2, the tail gas of the iron is fully contacted with the second liquid 200 in the shell 2 by utilizing the principle that steam rises upwards, the second liquid 200 in the shell 2 becomes hot by utilizing the heat of the tail gas of the iron, and the heat exchange effect is achieved, so that the first liquid 100 (such as water) in the inner container 1 absorbs the heat of the second liquid 200 through the wall of the inner container 1 to heat the first liquid 100, the temperature of the tail gas of the iron is reduced after heat exchange is carried out, and the tail gas of the iron is discharged through the tail gas steam outlet port 4 at the upper part or the top of the shell 2, and the pressure balance in the shell 2 is ensured.

In the using process, the second liquid 200 in the shell 2 is continuously preheated by using the tail gas of the iron, an external water source enters the inner container 1 through the external water source inlet port 5 of the inner container 1, and simultaneously, the preheated first liquid 100 is input into the steam generator through the preheated water outlet port 6, the circulation work is carried out, the second liquid 200 just finishes heating the first liquid 100 in the inner container 1 in the water supplementing intermittent time, so that the first liquid 100 added into the steam generator is always the preheated liquid.

Wherein, the lower part or the bottom of shell 2 still are provided with the drain pipe 8 that dispatches from the factory, when not using, arrange the liquid in shell 2 to the greatest extent, can avoid energy-conserving steam recovery unit is in the transportation or extremely cold area frost crack shell 2, play the effect of the liquid in the clean shell 2, still be convenient for wash. The delivery drain pipe 8 can also be provided with a water and steam discharging electromagnetic valve, when the tail gas of the iron enters the shell 2, the tail gas of the iron is condensed to form water while returning steam and condensing when encountering a low-temperature furnace body, and after the condensed water is increased, the tail gas of the iron is discharged from the water and steam discharging electromagnetic valve, so that the second liquid 200 in the shell 2 is always kept at a preset position.

The two structures can realize the heat exchange of the tail gas of the iron and the effect of preheating the liquid, and can be selected according to the requirements without limitation.

Preferably, the number of the steam recovery preheating furnaces 01 is at least two (as shown in fig. 4), and the steam outlet/liquid interface 40 (for steam outlet) of the former steam recovery preheating furnace 01 is connected with the steam inlet/liquid interface 30 (for steam inlet) of the latter steam recovery preheating furnace 01' through the steam conveying pipe 24; the steam outlet/liquid port 40 (for discharging liquid) of the latter steam recovery preheating furnace 01' is connected with the steam inlet/liquid port 30 (for feeding liquid) of the former steam recovery preheating furnace 01 by a water delivery pipe 25. After the tail gas of the iron enters the previous steam recovery preheating furnace 01 for heat exchange, the tail gas of the iron with reduced heat enters the next steam recovery preheating furnace 01' for heat exchange, and so on. When water is required to be supplemented into the equipment, warm hot water passing through the later steam recovery preheating furnace 01 is injected into the former steam recovery preheating furnace 01, and by analogy, the water is gradually preheated from back to front, so that the water has higher temperature and enters the steam generator, the heating power of the equipment is reduced, and the energy-saving effect is achieved.

Furthermore, heat-insulating sleeves (not numbered in the figure) are arranged outside the steam delivery pipe 24 and the water delivery pipe 25, so that heat loss caused by the tail gas of the iron and the preheated water in the transfer process can be avoided to the maximum extent, and better energy-saving effect is achieved.

In this embodiment, shell 2 and inner bag 1 are nonrust steel pipe, can reach better heat transfer effect, and still can not corrode to guarantee shell 2 and inner bag 1's life, of course, the utility model discloses also not inject shell 2 and inner bag 1 and need be nonrust steel pipe, also can be copper pipe, aluminum pipe etc. to reach the heat transfer effect of preferred, nonrust corrosion can. Moreover, the shell 2 and the inner container 1 are welded and fixed, so that the shell and the inner container are firmly connected, and the conditions of looseness, leakage and the like cannot occur in use.

With continuing reference to fig. 1 and 2, the steam inlet/liquid port 30 and the steam outlet/liquid port 40 are both provided with the insulating layer 9, and the insulating layer 9 is also provided outside the shell 2 to ensure that the heat of the tail gas of the iron enters the shell 2 or the inner container 1 without loss, and simultaneously, the preheated liquid in the shell 2 or the inner container 1 can enter the steam generator without loss of heat, so that heat loss can be avoided to the maximum extent, and better energy saving effect can be achieved.

Still be provided with installation piece 10 on the shell 2, just installation piece 10 is the L type, the quantity of installation piece 10 can be 1 or a plurality of, makes energy-conserving vapor recovery unit can install in required position through installation piece 10, like positions such as wall body, support.

Based on foretell energy-conserving steam recovery unit, the utility model discloses still correspondingly provide a steam recovery system (please refer to collectively and draw together 5), including steam generator 02, iron 03, solenoid valve 04, water pump 05 and energy-conserving steam recovery unit, the steam vent of iron 03 is connected with an admission/liquid interface 30 of energy-conserving steam recovery unit (namely, the iron tail gas admission interface 3 of steam recovery preheater), the admission of outside water tank 06 is connected to an outflow/liquid interface 40 of energy-conserving steam recovery unit (namely, the iron tail gas of steam recovery preheater goes out vapour interface 4), makes the iron tail gas that iron 03 discharged get into and carries out the heat transfer in the energy-conserving steam adds the receipts device, makes the iron tail gas that the heat reduces reentrant outside water tank 06 at last, preheats the water in the outside water tank 06.

Further, a water outlet of the external water tank 06 is connected with another steam inlet/liquid interface 30 (i.e. external water source inlet interface 5 of the steam recovery preheating furnace) of the energy-saving steam recovery device sequentially through a water pump 05 and an electromagnetic valve 04, and another steam outlet/liquid interface 40 (i.e. preheating water outlet interface 6 of the steam recovery preheating furnace) of the energy-saving steam recovery device is connected with a water inlet of the steam generator 02. During water replenishing, warm water in the external water tank 06 is injected into the energy-saving steam recovery device to perform heat exchange and then is replenished into the steam generator 02, so that the steam pressure in the steam generator 02 does not fluctuate greatly, the waste heat energy is utilized, and the ironing quality can be ensured while the energy consumption is reduced.

In the steam recovery system of the utility model, at least two steam recovery preheating furnaces 01 are provided, and the steam outlet 4 of one steam recovery preheating furnace 01 is connected with the steam inlet of the next steam recovery preheating furnace 01' through a steam transmission pipe 24; the liquid outlet of the latter steam recovery preheating furnace 01' is connected with the liquid inlet of the former steam recovery preheating furnace 01 through a water delivery pipe 25. After the iron tail gas enters the previous steam recovery preheating furnace 01 for heat exchange, the iron tail gas with reduced heat enters the next steam recovery preheating furnace 01' for heat exchange, and the like, and finally enters the external water tank 06, so that the water in the previous steam recovery preheating furnace 01 to the external water tank 06 is arranged from hot to hot, and when the water in the external water tank 06 is conveyed to the steam generator 02 by the water pump 05, the water is heated from hot to hot for heat exchange, thereby avoiding that the temperature of the water entering the steam generator 02 is too large different from the temperature in the steam generator 02 to influence the steam pressure during water supplement, and preventing the pump and related pipelines from being damaged due to the large temperature difference during the water supplement of the steam recovery system.

In specific implementation, liquid enters the energy-saving steam recovery device through the external water tank 26, and meanwhile, the tail gas of the iron 03 discharged out of the iron enters the energy-saving steam recovery device for heat exchange, so that the liquid is preheated in the intermittent time of water supplement each time, and the liquid entering the steam generator 02 is kept in a preheated state all the time. Since the function and structure of the energy-saving steam recovery device have been described in detail above, they will not be described in detail herein.

To sum up, the utility model provides a steam recovery system and energy-conserving steam recovery device thereof, wherein, energy-conserving steam recovery device makes and fills water in shell or the inner bag when using, through passing through iron tail gas the steam admission/liquid interface is introduced in inner bag or the shell, utilizes the heat of iron tail gas to make first liquid or second liquid preheat to reach the purpose that makes second liquid or first liquid preheat, reduce the heating power of equipment, and then reach energy-conserving effect, can also avoid scalding bad pipeline and water pump because of the high temperature of iron tail gas, reduced the fault rate of equipment. Such as: when the energy-saving steam recovery device is used in a steam generator of ironing equipment, the tail gas of the iron is used for preheating water entering the steam generator, so that the phenomenon that steam pressure in the steam generator is greatly reduced to influence the ironing effect when the steam in the steam generator is consumed and water needs to be supplemented can be avoided.

The utility model provides a steam recovery system makes the iron tail gas get into the preceding steam recovery preheater and carries out the heat exchange after through a plurality of steam recovery preheats the stove, the iron tail gas that reduces the heat reenters back steam recovery preheater and carries out the heat exchange, analogize with this, get into in the outside water tank at last, make the water of preceding steam recovery preheater to outside water tank arrange by heat to temperature, thereby when using the water pump to carry the water in the outside water tank to steam generator in, water is by temperature to heat, carry out the heat exchange, in order to guarantee the temperature of the water that gets into steam generator.

Furthermore, the utility model discloses a steam recovery preheater adopts pipe-in-pipe mode, requires lowly to the casting, compares the mode of U type pipe, spiral pipe heating, and its material and manufacturing cost reduce by a wide margin.

It should be understood that equivalent alterations and modifications can be made by those skilled in the art according to the technical solution of the present invention and the inventive concept thereof, and all such alterations and modifications should fall within the scope of the appended claims.

Claims (10)

1. The utility model provides an energy-conserving steam recovery unit of steam recovery system, its characterized in that, includes an at least steam recovery preheater, the steam recovery preheater includes shell and the inner bag that is used for splendid attire first liquid, the shell cladding is outside the inner bag, and its inner wall and the outer wall interval of inner bag predetermine the interval and form the appearance chamber that is used for splendid attire second liquid, all be provided with steam inlet/liquid interface and play steam/liquid interface on inner bag and the shell.

2. The energy-saving steam recovery device of the steam recovery system of claim 1, wherein the steam inlet/liquid port of the inner container is an iron tail gas steam inlet port and is located at the lower part or the bottom of the inner container, and the steam outlet/liquid port of the inner container is an iron tail gas steam outlet port and is located at the upper part or the top of the inner container; the steam/liquid inlet port of the shell is an external water source liquid inlet port and is positioned at the lower part or the bottom of the shell, and the steam/liquid outlet port of the shell is a preheating water outlet port and is positioned at the upper part or the top of the shell.

3. The energy-saving vapor recovery device of a vapor recovery system of claim 1, wherein the vapor/liquid inlet of the housing is an iron tail gas inlet located at a lower portion or a bottom portion of the housing, and the vapor/liquid outlet of the housing is an iron tail gas outlet located at an upper portion or a top portion of the housing; the steam/liquid inlet port of the inner container is an external water source liquid inlet port and is positioned at the lower part or the bottom of the inner container, and the steam/liquid outlet port of the inner container is a preheating water outlet port and is positioned at the upper part or the top of the inner container.

4. The energy saving vapor recovery device of the vapor recovery system according to any one of claims 1 to 3, wherein a mounting piece is further provided on the housing.

5. The energy-saving steam recovery device of a steam recovery system according to any one of claims 1 to 3, wherein the outer shell and the inner container are both stainless steel tubes.

6. The energy efficient vapor recovery device of claim 5, wherein the outer shell and the inner container are welded to each other.

7. The energy saving vapor recovery device of claim 6, wherein an insulating layer is disposed outside the housing.

8. The energy-saving vapor recovery device of a vapor recovery system of claim 7, wherein the number of the vapor recovery preheating furnaces is at least two, and the vapor/liquid outlet port of the former vapor recovery preheating furnace is connected with the vapor/liquid inlet port of the latter vapor recovery preheating furnace through a vapor transmission pipe; the steam outlet/liquid interface of the latter steam recovery preheating furnace is connected with the steam inlet/liquid interface of the former steam recovery preheating furnace through a water pipe.

9. The energy saving vapor recovery device of claim 8, wherein a thermal sleeve is disposed outside the vapor delivery pipe and the water delivery pipe.

10. A steam recovery system, comprising a steam generator, an iron, a solenoid valve and a water pump, characterized in that, it further comprises an energy-saving steam recovery device of the steam recovery system as claimed in any one of claims 1 to 9, the steam outlet of the iron is connected with a steam/liquid inlet of the energy-saving steam recovery device, a steam/liquid outlet of the energy-saving steam recovery device is connected with a steam inlet of an external water tank, a water outlet of the external water tank is connected with another steam/liquid inlet of the energy-saving steam recovery device sequentially through the water pump and the solenoid valve, and another steam/liquid outlet of the energy-saving steam recovery device is connected with a water inlet of the steam generator.

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