Multi-effect energy-saving cold and hot water unit

Abstract

The utility model relates to the technical field of energy conservation and environmental protection, and discloses a multi-effect energy-saving cold and hot water unit which comprises a shell, an air-cooled condenser, an evaporative cold condenser, a hot water heat exchanger and a cold water heat exchanger, condensation fans are arranged on the left side and the right side of the upper portion of the outer portion of the shell respectively, and the evaporative cold condenser is arranged below the condensation fan on one side. An air-cooled condenser is arranged below the condensation fan on the other side, a spraying system is arranged above the evaporation cold condenser, and the hot water heat exchanger and the cold water heat exchanger are arranged between the evaporation cold condenser and the air-cooled condenser. The device has heat recovery under the refrigeration working condition and cold recovery under the heating working condition, secondary utilization can be carried out, the energy utilization efficiency is improved, the unit has four outlet water temperatures and can cope with changeable or complex environments, the unit cost is reduced, the energy efficiency of the device unit is high, energy is fully utilized, energy consumption is reduced, and the energy utilization efficiency is improved. The energy efficiency ratio of a conventional unit is usually 4.0-5.0, and the energy efficiency ratio of the unit can reach 6.0-7.0.

Description

Technical Field

[0001] The utility model relates to the field of energy conservation and environmental protection, and particularly relates to a multi-effect energy-saving cold and hot water unit. Background Art

[0002] With the development of social economy and the improvement of people's living standards, the demand for air-conditioning and heating systems is increasing continuously. Traditional cold and hot water units have certain limitations in terms of energy consumption and efficiency. In the context of the increasingly tense energy situation, reducing energy consumption and improving energy utilization efficiency have become urgent needs. On the one hand, the proportion of building energy consumption in the total energy consumption is gradually increasing, and the energy consumption of air-conditioning and heating systems accounts for a large share. In order to achieve the goal of energy conservation and emission reduction, it is necessary to develop more efficient and energy-saving cold and hot water units. On the other hand, the continuous progress of technology has enabled the application of new materials, advanced manufacturing processes, and intelligent control technologies, providing technical support for the research and development of multi-effect energy-saving cold and hot water units. At the same time, consumers have higher and higher requirements for a comfortable indoor environment, which also promotes the continuous improvement and innovation of cold and hot water units in terms of performance and energy conservation to meet market demands. In addition, relevant environmental protection regulations and policies have also put forward more stringent requirements for energy consumption and emissions, promoting the development of cold and hot water units towards multi-effect energy conservation.

[0003] The patent application with the publication number CN201621798U discloses a cold and hot water unit combining an evaporative cooling water unit and an air-cooled heat pump cold and hot water unit, which is composed of an evaporative cooling water unit, an air-cooled heat pump cold and hot water unit, and a direct evaporative cooler connected by a pipe network; the evaporative cooling water unit includes a high-temperature cold water air cooler, a low-temperature cold water air cooler, and a direct evaporative cooler connected in parallel; the air-cooled heat pump cold and hot water unit is composed of a condenser, an evaporator, and a compressor that form a closed loop, and the position of the air-cooled heat pump cold and hot water unit is set so that one inlet air of the air-cooled heat pump cold and hot water unit comes from the exhaust air of the evaporative cooling water unit, and three direct evaporative coolers are respectively arranged at the other three inlet air surfaces.

[0004] When the existing technical device is in use, it has certain limitations in terms of energy consumption and efficiency.

[0005] Therefore, a new technical solution is needed to solve the above technical problems. Summary of the Utility Model

[0006] The purpose of the utility model is to provide a multi-effect energy-saving cold and hot water unit, which has heat recovery under the refrigeration condition and cold recovery under the heating condition, can be reused, and improves energy utilization efficiency.

[0007] The technical solution adopted by the utility model is:

[0008] A multi-effect energy-saving cold and hot water unit, including a housing, an air-cooled condenser, an evaporative air-cooled condenser, a hot water heat exchanger, and a cold water heat exchanger. On the upper part of the outside of the housing, there is a condensing fan on each of the left and right sides. An evaporative air-cooled condenser is arranged under one condensing fan, and an air-cooled condenser is arranged under the other condensing fan. A spraying system is arranged above the evaporative air-cooled condenser. The hot water heat exchanger and the cold water heat exchanger are arranged between the evaporative air-cooled condenser and the air-cooled condenser.

[0009] By adopting the above structure, the device has heat recovery under the refrigeration condition and cold recovery under the heating condition, which can be reused to improve the energy utilization efficiency.

[0010] Preferably, the hot water heat exchanger includes a hot water heat exchanger I and a hot water heat exchanger II. Inside the housing, a water tank partition is arranged above the hot water heat exchanger I and the hot water heat exchanger II. A compressor and an electrical box are arranged on the water tank partition, and the compressor is connected with a gas-liquid separator.

[0011] By adopting the above structure, the device has a compact structure, a small volume, occupies little space, and is convenient for the device to be placed.

[0012] Preferably, a condenser partition I is arranged on the side of the air-cooled condenser in the housing close to the hot water heat exchanger II, and a condenser partition II is arranged on the side of the evaporative air-cooled condenser in the housing close to the hot water heat exchanger I.

[0013] By adopting the above structure, the structure of the device is clearly divided, and the internal structure is convenient for installation and maintenance during use.

[0014] Preferably, a maintenance door is arranged between the hot water heat exchanger II and the air-cooled condenser.

[0015] By adopting the above structure, it is convenient for the equipment to be inspected and repaired.

[0016] Preferably, a cold water water tank I and a cold water water tank II are respectively arranged below the hot water heat exchanger I and the hot water heat exchanger II.

[0017] Preferably, a cold water heat exchanger I and a cold water heat exchanger II are arranged at the relative positions of the hot water heat exchanger I and the hot water heat exchanger II in the housing, and a hot water water tank I and a hot water water tank II are respectively arranged below the cold water heat exchanger I and the cold water heat exchanger II.

[0018] Preferably, the hot water heat exchanger I, the hot water heat exchanger II, the cold water heat exchanger I, and the cold water heat exchanger II are connected through pipelines, and a valve group is arranged on the pipelines.

[0019] By adopting the above structure, the unit of the device has a total of four outlet water temperatures, which can cope with variable or complex environments, reduce the unit cost, and set a valve group, so that the device can achieve throttling and pressure reduction during use.

[0020] Preferably, solenoid valves Ⅰ, Ⅱ, Ⅲ, and Ⅳ are respectively connected to the hot water heat exchanger Ⅰ, hot water heat exchanger Ⅱ, cold water heat exchanger Ⅰ, and cold water heat exchanger Ⅱ.

[0021] With the above structure, it is convenient to control the water flow rate when the device is in use.

[0022] Compared with the prior art, the utility model has the following beneficial effects:

[0023] 1. The device of the utility model has heat recovery under the refrigeration condition and cold recovery under the heating condition, which can be reused, improving the energy utilization efficiency. This unit has a total of four outlet water temperatures, which can cope with variable or complex environments and reduce the unit cost.

[0024] 2. The unit of the device of the utility model has high energy efficiency. The energy efficiency ratio of conventional units is usually between 4.0 and 5.0, while this unit can reach 6.0 to 7.0.

[0025] 3. Compared with traditional units, when the unit of the utility model is in the condensation process, first, the refrigerant is cooled by the air-cooled condenser, and the evaporative condenser connected by the shell and tube continues to work. The spray heads above the evaporative condenser also start to work at the same time. The high-temperature water after condensation is stored in the hot water tank and can flow to domestic water, making more full use of energy and reducing energy consumption. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 is a schematic structural diagram of the utility model;

[0027] Figure 2 is a top view structural diagram of the utility model;

[0028] Figure 3 is a position structural diagram of the spray system of the utility model;

[0029] Figure 4 is a schematic principle diagram of the utility model.

[0030] Among them: 1. Housing; 2. Condensing fan; 3. Air-cooled condenser; 4. Spray system; 5. Evaporative condenser; 6. Hot water heat exchanger Ⅰ; 7. Hot water heat exchanger Ⅱ; 8. Inspection door; 9. Compressor; 10. Electrical box; 11. Condenser partition Ⅰ; 12. Condenser partition Ⅱ; 13. Water tank partition; 14. Cold water heat exchanger Ⅰ; 15. Cold water heat exchanger Ⅱ; 16. Cold water tank Ⅰ; 17. Cold water tank Ⅱ; 18. Hot water tank Ⅰ; 19. Hot water tank Ⅱ; 20. Gas-liquid separator; 21. Valve group; 22. Solenoid valve Ⅰ; 23. Solenoid valve Ⅱ; 24. Solenoid valve Ⅲ; 25. Solenoid valve Ⅳ. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0031] Such asFigures 1-4 As shown in the figure, a multi-effect energy-saving cold and hot water unit includes a housing 1, an air-cooled condenser 3, an evaporative air-cooled condenser 5, a hot water heat exchanger, and a cold water heat exchanger. On the upper part of the outside of the housing 1, a condensing fan 2 is provided on each of the left and right sides. An evaporative air-cooled condenser 5 is arranged below one condensing fan 2, and an air-cooled condenser 3 is arranged below the other condensing fan 2. A spraying system 4 is arranged above the evaporative air-cooled condenser 5. The hot water heat exchanger and the cold water heat exchanger are arranged between the evaporative air-cooled condenser 5 and the air-cooled condenser 3. This device has heat recovery under the refrigeration condition and cold recovery under the heating condition, which can be reused to improve the energy utilization efficiency. This unit has a total of four outlet water temperatures, which can cope with variable or complex environments and reduce the unit cost. The energy efficiency of the device unit is high. The energy efficiency ratio of conventional units is usually between 4.0 and 5.0, while this unit can reach 6.0 to 7.0.

[0032] The hot water heat exchanger includes a hot water heat exchanger I 6 and a hot water heat exchanger II 7. Above the hot water heat exchanger I 6 and the hot water heat exchanger II 7 in the housing 1, a water tank partition 13 is provided. A compressor 9 and an electric box 10 are provided on the water tank partition 13. The compressor 9 is connected with a gas-liquid separator 20.

[0033] In the housing 1, a condenser partition I 11 is provided on the side of the air-cooled condenser 3 close to the hot water heat exchanger II 7, and a condenser partition II 12 is provided on the side of the evaporative air-cooled condenser 5 close to the hot water heat exchanger I 6. An inspection door 8 is arranged between the hot water heat exchanger II 7 and the air-cooled condenser 3. Below the hot water heat exchanger I 6 and the hot water heat exchanger II 7, a cold water tank I 16 and a cold water tank II 17 are respectively provided.

[0034] In the housing 1, a cold water heat exchanger I 14 and a cold water heat exchanger II 15 are provided at the relative positions of the hot water heat exchanger I 6 and the hot water heat exchanger II 7. Below the cold water heat exchanger I 14 and the cold water heat exchanger II 15, a hot water tank I 18 and a hot water tank II 19 are respectively provided. The hot water heat exchanger I 6, the hot water heat exchanger II 7, the cold water heat exchanger I 14, and the cold water heat exchanger II 15 are connected through pipelines, and a valve group 21 is arranged on the pipelines. Solenoid valves I 22, solenoid valves II 23, solenoid valves III 24, and solenoid valves IV 25 are respectively connected to the hot water heat exchanger I 6, the hot water heat exchanger II 7, the cold water heat exchanger I 14, and the cold water heat exchanger II 15. Compared with traditional units, during the condensation process of this unit, first, the refrigerant is cooled by the air-cooled condenser 3, and the evaporative air-cooled condenser 5 connected by a shell and tube continues to work. The spray heads of the spraying system 4 above the evaporative air-cooled condenser 5 also start to work simultaneously. The high-temperature water after condensation is stored through the hot water tank I 18 and the hot water tank II 19, and can flow to domestic water, making relatively full use of energy and reducing energy consumption.

[0035] The working principle of this device is as Figure 4 shown:

[0036] 1. Cooling and heating conditions: After setting two water temperatures, the equipment is started. Based on the two cold water return temperatures and two hot water return temperatures, the solenoid valves Ⅲ24 and Ⅳ25 on the cold water side are opened and adjusted to control the refrigerant flow rates of two circuits. The solenoid valve Ⅲ24 controls the refrigerant flow rate of one circuit to reach a set water temperature, and the solenoid valve Ⅳ25 controls the refrigerant flow rate of the other circuit to slowly adjust the return water temperature to the set value. Similarly, the solenoid valves Ⅰ22 and Ⅱ23 on the hot water side adjust the refrigerant flow rate into the hot water shell and tube according to the hot water return temperature to reach the set water temperature. When switching between the cooling and heating conditions, through the internal switching of the three-way valve, the cold water shell and tube still produce cold water, and the hot water shell and tube still produce hot water. The excess heat is dissipated through the air-cooled condenser 3 and the evaporative condenser 5.

[0037] 2. Single cooling (heating) conditions: After setting one (two) cold (hot) water temperature(s), the solenoid valves Ⅰ22 and Ⅱ23 on the hot water side are opened, and the solenoid valves Ⅲ24 and Ⅳ25 on the cold water side are closed, or the solenoid valves Ⅰ22 and Ⅱ23 on the hot water side are closed, and the solenoid valves Ⅲ24 and Ⅳ25 on the cold water side are opened. According to the set water temperature, the solenoid valves adjust the refrigerant flow rate to reach the required water temperature. The heat dissipation or cold absorption of the system is achieved through the air-cooled condenser 3 and the evaporative condenser 5.

[0038] The embodiments described above are only for describing the preferred embodiments of the present invention, and do not limit the scope of the present invention. Without departing from the design spirit of the present invention, various deformations and improvements made by those skilled in the art to the technical solutions of the present invention shall fall within the protection scope determined by the claims of the present invention.

Claims

1. A multi-effect energy-saving cold and hot water unit, comprising a housing, an air-cooled condenser, an evaporative cooling condenser, a hot water heat exchanger, and a cold water heat exchanger, characterized in that: On the upper part of the outside of the housing, there is a condensing fan on each of the left and right sides. An evaporative condenser is arranged under one condensing fan, and an air-cooled condenser is arranged under the other condensing fan. A spraying system is arranged above the evaporative condenser. The hot water heat exchanger and the cold water heat exchanger are arranged between the evaporative condenser and the air-cooled condenser.

2. The multi-effect energy-saving cold and hot water unit according to claim 1, wherein: The hot water heat exchanger includes a hot water heat exchanger I and a hot water heat exchanger II. Inside the housing, a water tank partition is arranged above the hot water heat exchanger I and the hot water heat exchanger II. A compressor and an electric box are arranged on the water tank partition. The compressor is connected with a gas-liquid separator.

3. The multi-effect energy-saving cold and hot water unit according to claim 2, characterized in that: Inside the housing, a condenser partition I is arranged on the side of the air-cooled condenser close to the hot water heat exchanger II, and a condenser partition II is arranged on the side of the evaporative condenser close to the hot water heat exchanger I.

4. The multi-effect energy-saving cold and hot water unit according to claim 2, characterized in that: An inspection door is arranged between the hot water heat exchanger II and the air-cooled condenser.

5. The multi-effect energy-saving cold and hot water unit according to claim 2, wherein: Below the hot water heat exchanger I and the hot water heat exchanger II, a cold water tank I and a cold water tank II are respectively arranged.

6. The multi-effect energy-saving cold and hot water unit according to claim 2, characterized in that: Inside the housing, a cold water heat exchanger I and a cold water heat exchanger II are arranged at the relative positions of the hot water heat exchanger I and the hot water heat exchanger II. Below the cold water heat exchanger I and the cold water heat exchanger II, a hot water tank I and a hot water tank II are respectively arranged.

7. The multi-effect energy-saving cold and hot water unit according to claim 6, characterized in that: The hot water heat exchanger I, the hot water heat exchanger II, the cold water heat exchanger I and the cold water heat exchanger II are communicated through pipelines, and a valve group is arranged on the pipelines.

8. The multi-effect energy-saving cold and hot water unit according to claim 6, characterized in that: Solenoid valves I, solenoid valves II, solenoid valves III and solenoid valves IV are respectively connected to the hot water heat exchanger I, the hot water heat exchanger II, the cold water heat exchanger I and the cold water heat exchanger II.

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