Laundry flash steam and condensate waste heat dual-recovery system

Abstract

The utility model discloses a washhouse flash steam and condensate water waste heat dual-recovery system, which relates to the technical field of washhouse flash steam and comprises a system body, and the system body comprises a shell and tube flash steam recovery heat exchanger, a hot water waste heat recovery water tank, a hot water waste heat recovery plate heat exchanger, a domestic hot water tank and a softened water tank. The shell and tube flash steam recovery heat exchanger is connected with a hot water waste heat recovery water tank and a domestic hot water tank through pipelines, and a hot water waste heat recovery plate heat exchanger is mounted between one end of the hot water waste heat recovery water tank and the domestic hot water tank; according to the flash steam and condensate water waste heat dual-recovery system for the laundry room, the heat loss of condensate water of a large-scale laundry room generally reaches 30% of the overall steam energy consumption; the heat loss of the condensed water can be recovered by more than 80% through the flash steam and condensed water waste heat dual-recovery system for the laundry room.

Description

Technical Field

[0001] The utility model relates to the technical field of flash steam in a laundry room, in particular to a flash steam and condensed water waste heat dual recovery system in a laundry room. Background Art

[0002] During the laundry process, the hot water and detergent produced by the washing machine will generate steam, especially when washing and drying clothes. This steam and water vapor can be treated by flash steam and condensation water.

[0003] Flash Steam: Flash steam is produced when hot water or air comes into contact with a cool surface. In a laundry room, this can be the result of rapid evaporation of water vapor due to heat generated by washing machines or other equipment. These vapors require proper ventilation and exhaust systems to avoid accumulation and ensure indoor air quality.

[0004] Condensate Water: When hot steam cools, it condenses into water. In a laundry this is primarily water formed when the hot air in the dryer cools. Condensate is usually collected through pipes and discharged into the sewer system to prevent water accumulation and ensure a dry and clean laundry.

[0005] If these flash steam are not collected and utilized, they will often be directly discharged into the environment, resulting in energy waste and negative impact on the environment. At the same time, a large amount of heat will be released in the process of steam being condensed into water. If this heat is effectively recycled, it can be used to heat water or provide other energy needs.

[0006] As mentioned above, usually large laundry rooms have steam trap failures and the steam condensate produced by equipment such as dryers and ironing machines also contains a large amount of flash steam. When the high-temperature condensate is connected to an open soft water tank, there will be heat loss when it comes into direct contact with the atmosphere. For this reason, we have designed a laundry room flash steam and condensate waste heat dual recovery system to solve the above problems. Summary of the invention

[0007] The utility model aims to solve the shortcomings in the prior art and proposes a flash steam and condensed water waste heat dual recovery system for a laundry room.

[0008] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0009] A flash steam and condensed water waste heat dual recovery system for a laundry room, comprising a system body, wherein the system body comprises a shell and tube flash steam recovery heat exchanger, a hot water waste heat recovery water tank, a hot water waste heat recovery plate heat exchanger, a domestic hot water tank and a softening water tank;

[0010] The shell and tube flash gas recovery heat exchanger is connected to the hot water waste heat recovery water tank and the domestic hot water tank through pipelines, and a hot water waste heat recovery plate heat exchanger is installed between one end of the hot water waste heat recovery water tank and the domestic hot water tank;

[0011] The other end of the hot water waste heat recovery water tank is connected to the softening water tank.

[0012] Preferably, a hot water circulation pump is installed between the hot water waste heat recovery water tank and the hot water waste heat recovery plate heat exchanger.

[0013] Preferably, a temperature control valve is installed between the hot water waste heat recovery tank and the softening water tank, and the temperature set by the temperature control valve is -°C.

[0014] Preferably, the temperature of the domestic water inside the domestic hot water tank is -°C.

[0015] Preferably, a delivery pipeline is connected between the top and bottom of the hot water waste heat recovery water tank and the hot water waste heat recovery plate heat exchanger.

[0016] Preferably, the shell and tube flash gas recovery heat exchanger is connected to an interface pipeline for entering the laundry room condensed water.

[0017] Preferably, a water pump is connected between the shell and tube flash steam recovery heat exchanger and the domestic hot water tank.

[0018] Compared with the prior art, the beneficial effects of the utility model are as follows: in the utility model, flash steam is first recovered by a shell and tube flash steam recovery heat exchanger; a hot water waste heat recovery plate heat exchanger is used to recover the heat of condensed hot water, reducing it to 50 degrees, reducing evaporative heat dissipation, and sending the softened condensed water at 50°C into the boiler or steam generator softening water tank can effectively save water, and after reducing the flash steam, all the condensed water is reused in the steam system.

[0019] Through the laundry room flash steam and condensed water waste heat dual recovery system, the condensed water heat loss in a large laundry room usually reaches 30% of the overall steam energy consumption. Through the laundry room flash steam and condensed water waste heat dual recovery system, more than 80% of the condensed water heat loss can be recovered. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a work flow chart of the first embodiment of the present invention;

[0021] Figure 2 This is a work flow chart of the second embodiment of the present invention.

[0022] In the figure: 1 shell and tube flash steam recovery heat exchanger, 2 hot water waste heat recovery water tank, 3 hot water waste heat recovery plate heat exchanger, 4 domestic hot water tank, 5 softening water tank, 6 temperature control valve. DETAILED DESCRIPTION

[0023] In order to make the technical means, creative features, objectives and effects of the utility model easy to understand, the technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments.

[0024] During the laundry process, the hot water and detergent produced by the washing machine will generate steam. If these steam are not collected and utilized, they will often be directly discharged into the environment, causing energy waste and negative impact on the environment. Therefore, through the flash gas recovery system, these steam can be collected, condensed and converted into water resources.

[0025] At the same time, a large amount of heat is released in the process of steam being condensed into water. If this heat is effectively recovered and utilized, it can be used to heat water or provide other energy needs.

[0026] Embodiment 1

[0027] Reference Figure 1 , a flash steam and condensed water waste heat dual recovery system for a laundry room, comprising a system body, the system body comprising a shell and tube flash steam recovery heat exchanger 1, a hot water waste heat recovery water tank 2, a hot water waste heat recovery plate heat exchanger 3, a domestic hot water tank 4 and a softening water tank 5;

[0028] In this embodiment, the shell and tube flash gas recovery heat exchanger 1 is connected to the hot water waste heat recovery tank 2 and the domestic hot water tank 4 through pipelines;

[0029] Among them, a hot water waste heat recovery plate heat exchanger 3 is installed between one end of the hot water waste heat recovery water tank 2 and the domestic hot water tank 4, and a delivery pipeline is connected between the top and bottom of the hot water waste heat recovery water tank 2 and the hot water waste heat recovery plate heat exchanger 3. A hot water circulation pump is installed between the hot water waste heat recovery water tank 2 and the hot water waste heat recovery plate heat exchanger 3, and the other end of the hot water waste heat recovery water tank 2 is connected to the softening water tank 5;

[0030] More specifically, a temperature control valve is installed between the hot water waste heat recovery water tank 2 and the softening water tank 5, and the temperature set by the temperature control valve is 10-50°C.

[0031] In this embodiment, the temperature of the domestic water in the domestic hot water tank 4 is 45-55°C.

[0032] More specifically, the shell and tube type flash gas recovery heat exchanger 1 is connected to an interface pipeline for entering the condensed water of the laundry room, and a water pump is connected between the shell and tube type flash gas recovery heat exchanger 1 and the domestic hot water tank 4 .

[0033] In this embodiment, the shell-and-tube flash steam recovery heat exchanger 1 has four connection ends, which are respectively connected to the flash steam above 95°C and condensed water in the laundry room, the domestic hot water tank 4, the hot water waste heat recovery water tank 2, and the domestic hot water tank 4 after the hot water waste heat recovery plate heat exchanger 3 exchanges;

[0034] When in use, a mixture of flash steam and condensed water at a temperature above 95°C from the laundry room enters the shell and tube flash steam recovery heat exchanger 1, and then is heat exchanged with the high-temperature domestic hot water of the domestic hot water tank 4 at a temperature of 45-55°C or the domestic hot water tank 4 after exchange through the hot water waste heat recovery plate heat exchanger 3 through the shell and tube flash steam recovery heat exchanger 1, and pure condensed water at 80°C is obtained and concentrated in the hot water waste heat recovery water tank 2, and then is heat exchanged with the domestic hot water of 45-55°C through the hot water circulation pump and the hot water waste heat recovery plate heat exchanger 3. When the temperature in the hot water waste heat recovery water tank 2 drops to 50°C, the softened condensed water at 50°C is sent to the boiler or steam generator softened water tank 5 for use in the steam equipment.

[0035] Embodiment 2

[0036] Reference Figure 2 , the technology in the second embodiment is basically the same as that in the first embodiment, and the main difference is that, in this embodiment, the shell and tube flash steam recovery heat exchanger 1 has three connection ends, which are respectively connected to the flash steam above 95°C and condensed water in the laundry room, the domestic hot water tank 4 and the hot water waste heat recovery water tank 2;

[0037] When in use, a mixture of flash steam and condensed water above 95°C from the laundry room enters the shell and tube flash steam recovery heat exchanger 1, and then exchanges heat with the 45-55°C high-temperature domestic hot water in the domestic hot water tank 4 through the shell and tube flash steam recovery heat exchanger 1 to obtain pure condensed water at 80°C, which is concentrated in the hot water waste heat recovery water tank 2, and then exchanges heat with the 45-55°C domestic hot water in the domestic hot water tank 4 through the hot water circulation pump and the hot water waste heat recovery plate heat exchanger 3. When the temperature in the hot water waste heat recovery water tank 2 drops to 50°C, the 50°C softened condensed water is sent to the boiler or steam generator softened water tank 5 for use in the steam equipment.

[0038] Compared with the first embodiment, the step of connecting the domestic hot water tank 4 after the exchange with the hot water waste heat recovery plate heat exchanger 3 and the shell and tube flash steam recovery heat exchanger 1 is omitted, and the structure is simpler and more convenient. In the embodiment, by adding the above-mentioned connection steps and adding multiple circulation pipelines, the mixture of flash steam and condensed water is circulated and exchanged with high-temperature domestic hot water multiple times, and the conversion efficiency is higher.

[0039] In the above-mentioned Embodiment 1 and Embodiment 2, the shell and tube flash steam recovery heat exchanger 1 first recovers the flash steam; the hot water waste heat recovery plate heat exchanger 3 is used to recover the heat of condensed hot water, reducing it to 50 degrees to reduce evaporative heat dissipation.

[0040] The softened condensed water at 50° C. is sent to the boiler or the steam generator softening water tank 5, which can effectively save water and reduce the flash steam. All the condensed water is recycled to the steam system.

[0041] Through the laundry room flash steam and condensed water waste heat dual recovery system, the condensed water heat loss in a large laundry room usually reaches 30% of the overall steam energy consumption. Through the laundry room flash steam and condensed water waste heat dual recovery system, more than 80% of the condensed water heat loss can be recovered.

[0042] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0043] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0044] The above shows and describes the basic principles, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited to the above embodiments. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of protection claimed by the utility model. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A flash steam and condensed water waste heat dual recovery system for a laundry room, comprising a system body, characterized in that: The system body comprises a shell and tube flash steam recovery heat exchanger (1), a hot water waste heat recovery water tank (2), a hot water waste heat recovery plate heat exchanger (3), a domestic hot water tank (4) and a softened water tank (5); The shell and tube type flash gas recovery heat exchanger (1) is connected to the hot water waste heat recovery water tank (2) and the domestic hot water tank (4) through pipelines, and a hot water waste heat recovery plate heat exchanger (3) is installed between one end of the hot water waste heat recovery water tank (2) and the domestic hot water tank (4); The other end of the hot water waste heat recovery water tank (2) is connected to the softening water tank (5).

2. A laundry room flash steam and condensed water waste heat dual recovery system according to claim 1, characterized in that: A hot water circulation pump is installed between the hot water waste heat recovery water tank (2) and the hot water waste heat recovery plate heat exchanger (3).

3. A laundry room flash steam and condensed water waste heat dual recovery system according to claim 1, characterized in that: A temperature control valve is installed between the hot water waste heat recovery tank (2) and the softening water tank (5), and the temperature set by the temperature control valve is 10-50°C.

4. A laundry room flash steam and condensed water waste heat dual recovery system according to claim 1, characterized in that: The temperature of the domestic water in the domestic hot water tank (4) is 45-55°C.

5. A laundry room flash steam and condensed water waste heat dual recovery system according to claim 1, characterized in that: The hot water waste heat recovery water tank (2) is connected to the hot water waste heat recovery plate heat exchanger (3) via a delivery pipeline both above and below the hot water waste heat recovery water tank (2).

6. A laundry room flash steam and condensed water waste heat dual recovery system according to claim 1, characterized in that: The shell and tube type flash steam recovery heat exchanger (1) is connected to an interface pipeline for condensed water entering the laundry room.

7. A laundry room flash steam and condensed water waste heat dual recovery system according to claim 1, characterized in that: A water pump is connected between the shell and tube type flash steam recovery heat exchanger (1) and the domestic hot water tank (4).

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