Laundry room waste heat recovery system
By setting up an air source heat pump and heat exchanger in the laundry room, the hot air and condensate water are recycled and heated, the problem of energy waste in the laundry room is solved, the hotel's energy conservation and hot water demand are achieved, and the equipment efficiency is improved.
Patent Information
- Application Number
- CN202420711842.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-08
- Publication Date
- 2024-12-13
- Estimated Expiration
- 2034-04-08
AI Technical Summary
The emissions of condensate and hot air in the laundry room cause energy waste and the hotel requires a large amount of domestic hot water, and the existing technology has failed to effectively utilize these heat.
A waste heat recovery system for laundry rooms is designed, using an air source heat pump and heat exchanger to recycle the hot air and condensate in the laundry room and heat it to the hotel's domestic water heating pipeline through circulation pipelines to reduce energy consumption.
It has achieved energy savings for hotels, reduced energy costs, improved comprehensive energy utilization efficiency, reduced environmental pollution, met the hotel's hot water needs, and improved the working efficiency of air source heat pumps and heat exchangers.
Smart Images
Figure CN222165159U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the field of waste heat recovery, and in particular to a waste heat recovery system for a laundry room. Background Art
[0002] Since the laundry room needs steam for ironing and washing, and a large amount of high-temperature condensed water will be discharged, the environment of the laundry room is often hot and humid, so the hot and humid air in the laundry room needs to be discharged to the outside to improve the hot and stuffy environment indoors for the convenience of the relevant personnel. Hotel guests need to use a lot of domestic water for bathing and washing hands, and the waste heat of the laundry room is a good heat source that can be utilized. If the high-temperature air and high-temperature condensed water in the laundry room are discharged to the outside, it will cause a waste of energy. If this part of the heat is used, it can provide a large amount of domestic hot water for the hotel. Utility Model Content
[0003] In view of this, the present application proposes a laundry room waste heat recovery system to solve the above problems.
[0004] According to one aspect of the present application, a laundry room waste heat recovery system is proposed, which is suitable for hotels and includes: an air source heat pump and a heat exchanger; the air source heat pump is arranged in a machine room, the heat exchanger is arranged in the machine room of the hotel, and a circulation pipeline is arranged between the air source heat pump and the heat exchanger;
[0005] A first opening is provided at the top of the laundry room of the hotel, and a second opening is provided at the top of the machine room; the first opening is connected to the second opening through a first pipe; the air source heat pump can recover the hot air from the laundry room and supply heat to the domestic water heating pipe of the machine room, and the heat exchanger recovers the waste heat from the laundry room through the circulation pipeline and supplies heat to the domestic water heating pipe of the machine room.
[0006] In a possible implementation, an exhaust port is provided at the lower portion of the machine room, the exhaust port is connected to an exhaust pipe, an air outlet of the exhaust pipe is provided with an insect-proof net, and the size of the insect-proof net matches the size of the exhaust pipe.
[0007] In a possible implementation, one end of the exhaust duct close to the air outlet is arranged to be tilted downward, and one end of the exhaust duct close to the air outlet is arranged with a preset angle, and the range of the preset angle is 30 degrees to 60 degrees.
[0008] In a possible implementation, the first opening is arranged above the ceiling of the laundry room, and the second opening is arranged above the ceiling of the machine room; a first fan is arranged on the first pipe, and the first fan is arranged close to the laundry room.
[0009] In a possible implementation, a second fan is disposed on the exhaust duct, and the second fan is disposed close to an air outlet of the exhaust duct.
[0010] In a possible implementation, an ironing machine is provided in the laundry room, and there are multiple ironing machines. The ironing machines discharge high-temperature condensed water and transfer heat to the machine room.
[0011] In a possible implementation, there are multiple air source heat pumps, a circulation pipeline is provided between two adjacent air source heat pumps, and the multiple air source heat pumps are connected through the same set of pipelines.
[0012] In a possible implementation, the air source heat pump is disposed adjacent to the heat exchanger, and the machine room is disposed adjacent to the laundry room of the hotel.
[0013] In a possible implementation, the heat exchanger is a plate heat exchanger.
[0014] Beneficial effects of this application:
[0015] The laundry room waste heat recovery system proposed in this embodiment has a simple connection method and low cost. The laundry room waste heat recovery system of the present application collects and utilizes the waste heat in the hotel laundry room, and uses the waste heat in the hotel laundry room as a heat source to provide the hotel with domestic hot water throughout the year, saving part of the energy costs for the hotel, reducing costs and increasing efficiency. And it can directly use the hot air in the laundry room to supply hot water to the domestic water heating pipe in the machine room, saving energy and reducing emissions, and better meeting the needs of the hotel. Improve the comprehensive utilization efficiency of energy. The air source heat pump and the heat exchanger are arranged in the laundry room to provide a thermal environment for the air source heat pump and the heat exchanger, so that the working efficiency of the air source heat pump and the heat exchanger is higher. And it reduces the temperature of the condensed water discharged from the ironing machine, and there is no need to set up another device to cool the waste heat air before discharging it.
[0016] Other features and aspects of the present application will become apparent from the following detailed description of exemplary embodiments with reference to the attached drawings. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate exemplary embodiments, features, and aspects of the present application and, together with the description, serve to explain the principles of the present application.
[0018] Figure 1 A schematic diagram showing a waste heat recovery system for a laundry room according to an embodiment of the present application is shown. DETAILED DESCRIPTION
[0019] Various exemplary embodiments, features and aspects of the present application will be described in detail below with reference to the accompanying drawings. The same reference numerals in the accompanying drawings represent elements with the same or similar functions. Although various aspects of the embodiments are shown in the accompanying drawings, the drawings are not necessarily drawn to scale unless otherwise specified.
[0020] Among them, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" 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 application or 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 application.
[0021] 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. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.
[0022] The word “exemplary” is used exclusively herein to mean “serving as an example, example, or illustration.” Any embodiment described herein as “exemplary” is not necessarily to be construed as preferred or advantageous over other embodiments.
[0023] In addition, in order to better illustrate the present application, numerous specific details are given in the following specific embodiments. It should be understood by those skilled in the art that the present application can also be implemented without certain specific details. In some examples, methods, means, components and circuits well known to those skilled in the art are not described in detail in order to highlight the subject matter of the present application.
[0024] like Figure 1 As shown, the laundry room waste heat recovery system is suitable for hotels, including: an air source heat pump 200 and a heat exchanger 100; the air source heat pump 200 is arranged in the hotel's machine room 20; the heat exchanger 100 is arranged in the machine room 20; a circulation pipeline is arranged between the air source heat pump 200 and the heat exchanger 100; a first opening is arranged at the upper part of the hotel's laundry room 10, and a second opening is arranged at the upper part of the machine room 20; the first opening is connected to the second opening through a first pipe 30; the air source heat pump 200 can effectively utilize the hot air of the laundry room 10 to supply heat to the domestic water heating pipe 40 of the machine room 20; the heat exchanger 100 recovers the waste heat in the laundry room 10 through the circulation pipeline, and supplies heat to the domestic water heating pipe 40 of the machine room 20.
[0025] The laundry room waste heat recovery system proposed in this embodiment has a simple connection method and low cost. The laundry room waste heat recovery system of the present application collects and utilizes the waste heat of the laundry room 10 in the hotel, uses hot waste gas as a heat source, provides the hotel with domestic hot water throughout the year, saves part of the energy cost for the hotel, and reduces costs and increases efficiency. Among them, a plurality of ironing machines are arranged in the laundry room, and a plurality of ironing machines 11 are used to generate high-temperature steam to iron the linens required by the hotel. In this process, the high-temperature condensed water discharged by the ironing machine 11 indirectly transfers heat to the domestic water heating pipe 40 through the heat exchanger 100; at the same time, since the ironing machine 11 is arranged inside the laundry room 10, the air in the laundry room 10 is hot and humid air. After the hot and humid air is discharged to the machine room 20 through the first pipe 30, the air source heat pump 200 improves the working efficiency of the air source heat pump 200 itself by utilizing the hot air, saves energy and reduces emissions, and better meets the needs of the hotel. Improve the comprehensive utilization efficiency of energy. Specifically, since the air source heat pump 200 is greatly affected by the outdoor environment, if the air source heat pump 200 is placed outdoors, in a sub-zero environment in winter, the working efficiency of the air source heat pump 200 will be seriously affected. In the laundry room waste heat recovery system of the present application, the air source heat pump 200 is placed in the machine room 20, and the working environment temperature in the machine room 20 is relatively high, so that the working efficiency of the air source heat pump 200 is high, and the purpose of energy saving is achieved. It should be noted that the working principle of the air source heat pump 200 is to take heat from the air, use the refrigerant in the evaporator to absorb heat, and enter the compressor after evaporation to turn it into a high-temperature and high-pressure gas, and then enter the condenser to release heat, transfer the heat to the hot water circulation system, and condense into a high-temperature liquid refrigerant. After throttling expansion, it becomes a low-temperature and low-pressure two-phase refrigerant, and then enters the evaporator to absorb heat and evaporate into gas, and so on. If the air source heat pump 200 is placed outdoors, the air source heat pump 200 is easily affected by the weather, and the comprehensive efficiency COP of the air source heat pump 200 is generally about 2.8. The laundry room waste heat recovery system places the air source heat pump 200 in the machine room 20, and provides the machine room 20 with hot air in the laundry room 10, which not only improves the air temperature in the laundry room 10, but also provides a high-quality working environment for the air source heat pump 200, so that the comprehensive efficiency of the air source heat pump 200 can be increased to 35%, COP = 3.8. Taking a hotel as an example, the laundry room waste heat recovery system of this application saves the hotel about 30% of the annual cost of domestic hot water, and better meets the needs of hotel operators. It should also be noted that the heat exchanger 100 is connected in parallel with the air source heat pump 200. Specifically, the first end of the air source heat pump 200 is connected to the heat exchanger 100, and the second end of the air source heat pump 200 is connected to the heat exchanger 100; the first end of the air source heat pump 200 is connected to the hotel's domestic water heating pipe 40, and the second end of the air source heat pump 200 is connected to the hotel's domestic water heating pipe 40.The first end of the heat exchanger 100 is connected to the laundry room 10, the second end of the heat exchanger 100 is connected to the air source heat pump 200, the third end of the heat exchanger 100 is connected to the air source heat pump 200, the fourth end of the heat exchanger 100 is connected to the laundry room 10, the second end of the heat exchanger 100 is connected to the hotel's domestic water heating pipeline 40, and the third end of the heat exchanger 100 is connected to the hotel's domestic water heating pipeline 40. Specifically, the high-temperature condensed water discharged from the laundry room 10 is heat-exchanged by the heat exchanger 100, and then heat is supplied to the domestic water heating pipeline 40, and the high-temperature condensed water after heat transfer is converted into low temperature to meet the emission standard for discharge, and the other side is heat-exchanged to the required temperature for domestic hot water to be supplied to the hotel. Most hotels usually use boilers to provide domestic hot water for hotel rooms, and after using the laundry room waste heat recovery system of the present application, it can completely avoid the use of equipment such as boilers that require the burning of fossil energy, reduce environmental pollution, and meet the policy requirements of carbon peak and carbon neutrality. Make full use of waste heat, waste heat and other wasted energy, save the hotel's energy costs, and improve energy efficiency.
[0026] In one of the specific embodiments, an exhaust port 21 is provided at the lower part of the machine room 20, and the exhaust port 21 is connected to an exhaust pipe 50, and an insect-proof net 51 is provided at the air outlet of the exhaust pipe 50; the size of the insect-proof net 51 matches the size of the exhaust pipe 50. In this embodiment, it should be noted that, since the temperature of the surrounding air will gradually decrease during the heat absorption process of the air source heat pump 200, an exhaust pipe 50 is designed to discharge the cold air around the air source heat pump 200 in time to prevent the cold air from lowering the temperature in the machine room 20 and affecting the working efficiency of the air source heat pump 200 in the machine room 20. Specifically, hot air is delivered to the machine room 20 through the first pipe 30, and cold air is delivered to the outside through the exhaust pipe 50. It should also be noted that the exhaust pipe 50 of cold air is arranged in a vertical shaft near the machine room 20, and the cold air is delivered to the outside through the vertical space. It should be further explained that an insect-proof net 51 is provided at the air outlet of the exhaust duct 50 to prevent flying insects or other substances from entering the machine room 20, thereby ensuring the cleanliness, safety and reliability of the air system.
[0027] In one specific embodiment, one end of the exhaust duct 50 near the air outlet is tilted downward, and one end of the exhaust duct 50 near the air outlet is set at a preset angle, and the preset angle ranges from 30 degrees to 60 degrees. In this embodiment, it should be noted that, preferably, the air outlet end of the exhaust duct 50 is tilted downward at 45 degrees, which is used to prevent dust in the air from directly entering the exhaust duct 50 in most cases. Secondly, prevent special weather such as rain, for example, prevent rainwater from entering the machine room 20 through the exhaust duct 50, causing the equipment in the machine room 20 to get wet, resulting in accidents of shortening the life of the equipment.
[0028] In one specific embodiment, the first opening is arranged above the ceiling of the laundry room 10, and the second opening is arranged above the ceiling of the machine room 20; the first fan 31 is arranged on the first pipe 30, and the first fan 31 is arranged close to the laundry room 10. In this embodiment, it should be noted that the first fan 31 is arranged to quickly transmit the hot air in the laundry room 10 to the machine room 20. The hot air in the laundry room 10 is used as a heat source. The air source heat pump 200 processes the heat source and transmits it to the domestic water heating pipe 40 of the machine room 20, thereby improving the efficiency of waste heat recovery in the laundry room and reducing the energy loss of heat during transmission. Specifically, the first opening of the laundry room 10 quickly transmits the high-temperature and high-humidity air in the laundry room 10 to the machine room 20 through the second opening through the first fan 31 in the first pipe 30. At this time, the temperature in the machine room 20 is relatively high, and the air source heat pump 200 has a relatively high working efficiency. It should be further explained that a first fan 31 is arranged on the first pipeline 30 , which is equivalent to a first fan 31 being arranged between multiple first pipelines 30 , one end of the first fan 31 is connected to a first pipeline 30 , and the other end of the first fan 31 is connected to another first pipeline 30 .
[0029] In one specific embodiment, the exhaust duct 50 is provided with a second fan 52, and the second fan 52 is provided near the air outlet of the exhaust duct 50. Accelerate the discharge of cold air in the machine room 20. In this embodiment, it should be noted that the exhaust duct 50 is provided with a second fan 52, which is equivalent to providing a second fan 52 between multiple exhaust ducts 50, and one end of the second fan 52 is connected to one exhaust duct 50, and the other end of the second fan 52 is connected to another exhaust duct 50.
[0030] In one specific embodiment, the laundry room 10 is provided with an ironing machine 11, and the number of the ironing machines 11 is multiple. The ironing machine 11 discharges high-temperature condensed water and transfers heat to the machine room 20. In this embodiment, it should be noted that the high-temperature condensed water discharged by the ironing machine 11 indirectly transfers heat to the domestic water heating pipe 40 through the heat exchanger 100. Since there are multiple ironing machines 11 in the laundry room 10, the air in the laundry room 10 is hot and humid air. After the hot and humid air is discharged to the machine room 20 through the first pipe 30, the air source heat pump 200 can improve the working efficiency by utilizing the hot air.
[0031] In one specific embodiment, there are multiple air source heat pumps 200, and a circulation pipeline is provided between two adjacent air source heat pumps 200, and multiple air source heat pumps 200 are connected through the same set of pipes. In this embodiment, it should be noted that the first end of the air source heat pump 200 is connected to the first end of the adjacent air source heat pump 200, and the second end of the air source heat pump 200 is connected to the second end of the adjacent air source heat pump 200; the first end of the air source heat pump 200 is connected to the hotel's domestic water heating pipeline 40, and the second end of the air source heat pump 200 is connected to the hotel's domestic water heating pipeline 40. This makes the overall integration of the system higher, and through the same set of pipes, it is convenient for operators to overhaul, and compared with multiple pipes to heat the domestic water of the machine room 20, the use of the same set of pipes can reduce the heat loss in the pipes, save energy and reduce emissions, and better meet the needs of hotel operations.
[0032] In one specific embodiment, the air source heat pump 200 is disposed adjacent to the heat exchanger 100, and the machine room 20 is disposed adjacent to the hotel's laundry room 10. In this embodiment, it should be noted that the energy loss during the heat transmission is reduced.
[0033] In one possible implementation, the heat exchanger 100 is a plate heat exchanger. In this embodiment, it should be noted that the plate heat exchanger has the advantages of high heat transfer efficiency, large flow rate, small fluid pressure drop, and less heat dissipation loss. The plate heat exchanger is flexible and convenient: a set of molds can be used to press plates of different lengths to form plate bundles of different specifications to form a product series of the same width. The plate heat exchanger has a wide range of applications, a variety of specifications and models, and a wide range of choices, which can better meet the working conditions.
[0034] It should be noted that although the present application is used as an example to introduce the laundry room waste heat recovery system as above, those skilled in the art will understand that the present application should not be limited thereto. In fact, users can flexibly set it according to personal preferences and / or actual application scenarios, as long as it is reasonable.
[0035] The embodiments of the present application have been described above, and the above description is exemplary, not exhaustive, and is not limited to the disclosed embodiments. Many modifications and changes will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments. The selection of terms used herein is intended to best explain the principles of the embodiments, practical applications, or improvements to the technology in the market, or to enable other persons of ordinary skill in the art to understand the embodiments disclosed herein.
Claims
1. A laundry room waste heat recovery system, suitable for hotels, characterized in that: include: Air source heat pumps and heat exchangers; The air source heat pump is arranged in the machine room of the hotel, the heat exchanger is arranged in the machine room, and a circulation pipeline is arranged between the air source heat pump and the heat exchanger; A first opening is provided at the top of the laundry room of the hotel, and a second opening is provided at the top of the machine room; the first opening is connected to the second opening through a first pipe; the air source heat pump can recover the hot air from the laundry room and supply heat to the domestic water heating pipe of the machine room, and the heat exchanger recovers the waste heat from the laundry room through the circulation pipeline and supplies heat to the domestic water heating pipe of the machine room.
2. The laundry room waste heat recovery system according to claim 1, characterized in that: An exhaust port is arranged at the lower part of the machine room, and the exhaust port is connected to an exhaust pipe. An insect-proof net is arranged at the air outlet of the exhaust pipe, and the size of the insect-proof net matches the size of the exhaust pipe.
3. The laundry room waste heat recovery system according to claim 2, characterized in that: One end of the exhaust pipe close to the air outlet is tilted downward, and one end of the exhaust pipe close to the air outlet is provided with a preset angle, and the range of the preset angle is 30 degrees to 60 degrees.
4. The laundry room waste heat recovery system according to claim 1, characterized in that: The first opening is arranged above the suspended ceiling of the laundry room, and the second opening is arranged above the suspended ceiling of the machine room; a first fan is arranged on the first pipe, and the first fan is arranged close to the laundry room.
5. The laundry room waste heat recovery system according to claim 2, characterized in that: The exhaust duct is provided with a second fan, and the second fan is arranged close to the air outlet of the exhaust duct.
6. The laundry room waste heat recovery system according to any one of claims 1 to 5, characterized in that: An ironing machine is arranged in the laundry room, and the number of the ironing machines is multiple. The ironing machines discharge high-temperature condensed water and transfer heat to the machine room.
7. The laundry room waste heat recovery system according to any one of claims 1 to 5, characterized in that: There are multiple air source heat pumps, a circulation pipeline is arranged between two adjacent air source heat pumps, and the multiple air source heat pumps are connected through the same set of pipelines.
8. The laundry room waste heat recovery system according to any one of claims 1 to 5, characterized in that: The air source heat pump is arranged adjacent to the heat exchanger, and the machine room is arranged adjacent to the laundry room of the hotel.
9. The laundry room waste heat recovery system according to any one of claims 1 to 5, characterized in that: The heat exchanger is a plate heat exchanger.