Mild climate air cooling type energy-saving air conditioning system
By using outdoor temperature and humidity sensors in air conditioning systems under mild climate conditions and cooperating with the central controller, the operation efficiency of the chiller is adjusted and the use of air systems is given priority. The problem of increasing the outlet temperature and increasing the power consumption is solved, and more efficient and lower energy consumption air conditioning operation is achieved.
Patent Information
- Application Number
- CN202421968339.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-14
- Publication Date
- 2025-06-13
- Estimated Expiration
- 2034-08-14
AI Technical Summary
In mild climates, increasing the water outlet temperature of the chiller will increase electricity consumption, resulting in high cost, low efficiency and time-consuming problems.
A mild climate air-cooled energy-saving air-conditioning system is designed to detect the outdoor environment through outdoor temperature sensors and humidity sensors, and compare it with the indoor environment. The operation efficiency of the chiller is adjusted through a central controller, and the use of the air system is given priority. When the indoor comfort is still not achieved, the central air-conditioning refrigeration unit and fan coil system are turned on.
This system can improve the efficiency of the air conditioning system to a certain extent, reduce energy consumption, solve the problem of increasing the outlet water temperature and increasing electricity consumption, reduce costs and improve operational efficiency.
Smart Images
Figure CN222978298U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of air-cooled energy-saving air conditioners, in particular to an air-cooled energy-saving air conditioner system for mild climate. Background Technique
[0002] The central air-conditioning system consists of one or more cold and heat source systems and multiple air-conditioning systems. It uses the principle of liquid vaporization refrigeration to provide the required cooling capacity for the air-conditioning system to offset the heat load of the indoor environment; the heating system provides the required heat for the air-conditioning system to offset the heating and cooling load of the indoor environment;
[0003] The refrigeration system is a crucial part of the central air-conditioning system. The types, operating modes, structural forms, etc. it adopts directly affect the economy, efficiency, and rationality of the central air-conditioning system during operation;
[0004] The outlet water temperature of existing central air-conditioning chiller equipment manufacturers is set at 7°C - 12°C. Under the conditions of mild climate, many users are not aware of the gap between the outlet water temperature of the chiller and the actual demand. They often try to increase the outlet water temperature of the chiller. However, increasing the outlet water temperature will increase the power consumption, resulting in problems such as high cost, low efficiency, and time-consuming. Content of the Utility Model
[0005] Aiming at the deficiencies of the prior art, the utility model provides an air-cooled energy-saving air conditioner system for mild climate to solve the problems mentioned in the above background technique that increasing the outlet water temperature will increase the power consumption, resulting in high cost, low efficiency, and time-consuming.
[0006] To achieve the above purpose, the utility model provides the following technical solution: An air-cooled energy-saving air conditioner system for mild climate, including a cooling unit, an outdoor temperature sensor, and an outdoor humidity sensor. A control cabinet is fixedly installed on the outer wall of the cooling unit, and a unit controller is fixedly installed on the back of the cooling unit. A central processor is arranged inside the control cabinet. The input end of the cooling unit is fixedly communicated with a cooling water supply pipe. One end of the cooling water supply pipe away from the chiller is fixedly communicated with a cooling tower. The input end of the cooling tower is fixedly communicated with a second water pump. The input end of the second water pump is fixedly communicated with a cooling water return pipe. A first temperature sensor is arranged inside the cooling water return pipe. The output end of the chiller is fixedly communicated with a cooling water outlet pipe. A second temperature sensor is arranged inside the cooling water outlet pipe. One end of the cooling water outlet pipe away from the chiller is fixedly communicated with a first water pump. One end of the cooling water return pipe away from the second water pump is fixedly communicated with a circulation pipe.
[0007] Preferably, both the outdoor temperature sensor and the outdoor humidity sensor are electrically connected to the central controller, and a plurality of each of the outdoor temperature sensor and the outdoor humidity sensor are provided.
[0008] Preferably, the output end of the first water pump is fixedly communicated with a return pipe, and the return pipe is arranged outside the circulation pipe.
[0009] Preferably, a plurality of circulation pipes are provided, and fan coil units are arranged at the ends of the plurality of circulation pipes.
[0010] Preferably, the input ends of the plurality of fan coil units are fixedly communicated with the plurality of return pipes respectively.
[0011] Preferably, the unit controller, the central controller, the outdoor temperature sensor, and the outdoor humidity sensor are electrically connected.
[0012] Compared with the prior art, the beneficial effects of the present utility model are as follows:
[0013] 1. For this mild climate air-cooled energy-saving air-conditioning system, when the outdoor temperature is lower than the indoor temperature, the air system is preferentially used for operation. When the air supply system and the exhaust system are turned on and still cannot meet the indoor comfort requirements, the central air-conditioning refrigeration unit and the indoor fan coil unit system are then turned on. By detecting the outdoor temperature and humidity and comparing them with the indoor temperature and humidity, the operating efficiency of the chiller can be controlled, which can improve the efficiency to a certain extent and reduce energy consumption, solving the problems that increasing the water outlet temperature will increase the power consumption, resulting in high cost, low efficiency, and time-consuming.
[0014] 2. For this mild climate air-cooled energy-saving air-conditioning system, the outdoor temperature sensor and the outdoor humidity sensor are both used to detect the outdoor temperature, which can be compared with the indoor temperature, and this data is fed back to the central controller, which can achieve the effect of calculating the temperature difference by comparison and can achieve the effect of monitoring the outdoor temperature in real time. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 is a three-dimensional structural schematic diagram of the present utility model;
[0016] Figure 2 is a structural composition schematic diagram of the present utility model.
[0017] In the figure: 1. Cooling unit; 2. Control cabinet; 3. Unit controller; 4. Central controller; 5. Outdoor temperature sensor; 6. Outdoor humidity sensor; 7. Cooling water supply pipe; 8. Cooling tower; 9. Second water pump; 10. First temperature sensor; 11. Second temperature sensor; 12. Cooling water return pipe; 13. Cooling water outlet pipe; 14. Circulation pipe; 15. First water pump. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0018] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention. Embodiment
[0019] Please refer to FIGS. 1-2
[0020] A mild climate air-cooled energy-saving air-conditioning system includes a cooling unit 1, an outdoor temperature sensor 5, and an outdoor humidity sensor 6. A control cabinet 2 is fixedly installed on the outer wall of the cooling unit 1, and a unit controller 3 is fixedly installed on the back of the cooling unit 1. A central processing unit is provided inside the control cabinet 2. The input end of the cooling unit 1 is fixedly connected to a cooling water supply pipe 7. One end of the cooling water supply pipe 7 away from the chiller is fixedly connected to a cooling tower 8. The input end of the cooling tower 8 is fixedly connected to a second water pump 9. The input end of the second water pump 9 is fixedly connected to a cooling water return pipe 12. A first temperature sensor 10 is provided inside the cooling water return pipe 12. The output end of the chiller is fixedly connected to a cooling water outlet pipe 13. A second temperature sensor 11 is provided inside the cooling water outlet pipe 13. One end of the cooling water outlet pipe away from the chiller is fixedly connected to a first water pump 15. One end of the cooling water return pipe 12 away from the second water pump 9 is fixedly connected to a circulation pipe 14;
[0021] Specifically, when the outdoor temperature sensor 5 and the outdoor humidity sensor 6 detect the temperature and humidity, the data is fed back to the central controller 4. The central controller 4 sends instructions to the unit controller 3 according to the data, thereby controlling the operation of the chiller, turning on the first water pump 15. Then, the second temperature sensor 11 can detect the temperature inside the cooling water outlet pipe 13 and monitor the temperature of the discharged water. The first temperature sensor 10 can monitor the temperature of the returned cooling water, achieving the effect of feedback data. The settings of the second water pump 9 and the cooling tower 8 can better circulate the water. The cooling water supply pipe is used to connect the cooling tower 8 and the chiller;
[0022] In the embodiment: both the outdoor temperature sensor 5 and the outdoor humidity sensor 6 are electrically connected to the central controller 4, and a plurality of outdoor temperature sensors 5 and outdoor humidity sensors 6 are provided;
[0023] Specifically, both the outdoor temperature sensor 5 and the outdoor humidity sensor 6 are used to detect the outdoor temperature, which can be compared with the indoor temperature, and the data is fed back to the central controller 4, achieving the effect of comparing and calculating the temperature difference;
[0024] In an embodiment: The output end of the first water pump 15 is fixedly communicated with a return pipe, and the return pipe is arranged outside the circulation pipe 14;
[0025] Specifically, the first water pump 15 is arranged to input the cooled water into the return pipe to achieve the effect of supplying cold water;
[0026] In an embodiment: A plurality of circulation pipes 14 are provided, and air handling units are arranged at the ends of the plurality of circulation pipes 14;
[0027] Specifically, the circulation pipe 14 is used to circulate the cooling water. The plurality of air handling units arranged at the end of the circulation pipe 14 can be used to blow air into each room, achieving the effect of cooling;
[0028] In an embodiment: The input ends of the plurality of air handling units are respectively fixedly communicated with the plurality of return pipes;
[0029] Specifically, connecting the air handling unit and the return pipe together can achieve the effect of circulating the cooling water;
[0030] In an embodiment: The unit controller 3, the central controller 4, the outdoor temperature sensor 5, and the outdoor humidity sensor 6 are electrically connected;
[0031] Specifically, the electrical connection between the unit controller 3, the central controller 4, the outdoor temperature sensor 5, and the outdoor humidity sensor 6 can transmit data in real time and adjust according to the data to achieve the effect of saving resources;
[0032] Under summer working conditions, the fresh air control system based on the indoor-outdoor temperature difference, with fresh air as a supplement to the refrigeration source, runs preferentially;
[0033] When the outdoor temperature is lower than the indoor temperature, the wind system is preferentially used for operation. When the air supply system and the exhaust system are turned on and still cannot meet the indoor comfort requirements, the central air-conditioning refrigeration unit and the indoor air handling unit system are then turned on. Under the conditions of the summer mode, the fresh air system is in a continuous operation state. The operation of the air supply and exhaust system is controlled by the indoor temperature controller, and the air supply and exhaust fans are controlled by the temperature controller;
[0034] By installing the outdoor temperature and humidity sensor, the detected outdoor humidity is compared with the relative humidity in the area where the indoor humidity has requirements below 70%. Through the central controller 4, the outlet water temperature of the chiller is adjusted. The recommended adjustment strategy is as follows: If there are areas with high indoor humidity requirements, it is recommended to make a separate dehumidification design in the air-conditioning system design;
[0035] The comparison temperatures are as follows:
[0036] When the outdoor relative humidity is lower than 40%, the outlet water temperature of the chiller is 13°C - 18°C;
[0037] The outdoor relative humidity is below 50%, and the chilled water unit outlet water temperature is 11°C - 16°C;
[0038] The outdoor relative humidity is below 50% - 70%, and the chilled water unit outlet water temperature is 9°C - 14°C;
[0039] The outdoor relative humidity is above 70%, and the chilled water unit outlet water temperature is 7°C - 12°C;
[0040] The outdoor relative humidity is below 90%, and the chilled water unit outlet water temperature is 5°C - 10°C;
[0041] In the embodiment: the unit controller 3, the central controller 4, the outdoor temperature sensor 5, the outdoor humidity sensor 6, the first temperature sensor 10 and the second temperature sensor 11 are of existing structures, and the control circuit can be realized by simple programming of those skilled in the art, which belongs to the common general knowledge in the art. Only their use is involved without modification, so the control method and circuit connection will not be described in detail.
[0042] Working principle: When the outdoor temperature is lower than the indoor temperature, the wind system is preferentially used for operation. When the supply air system and the exhaust air system are turned on and still cannot meet the indoor comfort requirements, the central air-conditioning refrigeration unit and the indoor fan coil system are then turned on. The outdoor temperature and humidity are detected and compared with the indoor temperature and humidity to control the operation efficiency of the chilled water unit, which can improve the efficiency to a certain extent and reduce energy consumption. Compared with the related technologies, the mild climate air-cooled energy-saving air-conditioning system provided by the present utility model has the following beneficial effects: It solves the problem that increasing the outlet water temperature will increase the power consumption, resulting in high cost, low efficiency and time-consuming.
[0043] Although the embodiments of the present utility model have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.
Claims
1. A mild climate air-cooled energy-saving air conditioning system, comprising a cooling unit (1), an outdoor temperature sensor (5) and an outdoor humidity sensor (6), characterized in that: A control cabinet (2) is fixedly mounted on the outer wall of the cooling unit (1); a unit controller (3) is fixedly mounted on the back of the cooling unit (1); a central processing unit is arranged inside the control cabinet (2); an input end of the cooling unit (1) is fixedly connected to a cooling water supply pipe (7); an end of the cooling water supply pipe (7) away from the chiller is fixedly connected to a cooling tower (8); an input end of the cooling tower (8) is fixedly connected to a second water pump (9); an input end of the second water pump (9) is fixedly connected to a cooling water return pipe (12); a first temperature sensor (10) is arranged inside the cooling water return pipe (12); an output end of the chiller is fixedly connected to a cooling water outlet pipe (13); a second temperature sensor (11) is arranged inside the cooling water outlet pipe (13); an end of the cooling water outlet pipe away from the chiller is fixedly connected to a first water pump (15); and an end of the cooling water return pipe (12) away from the second water pump (9) is fixedly connected to a circulation pipe (14).
2. The mild climate air-cooling energy-saving air conditioning system according to claim 1, characterized in that: The outdoor temperature sensor (5) and the outdoor humidity sensor (6) are both electrically connected to the central controller (4), and a plurality of the outdoor temperature sensors (5) and the outdoor humidity sensors (6) are provided.
3. The mild climate air-cooling energy-saving air conditioning system according to claim 1, characterized in that: The output end of the first water pump (15) is fixedly connected to a return pipe, and the return pipe is arranged outside the circulation pipe (14).
4. The mild climate air-cooling energy-saving air conditioning system according to claim 1, characterized in that: A plurality of the circulation pipes (14) are provided, and fan coil units are provided at the ends of the plurality of circulation pipes (14).
5. The mild climate air-cooling energy-saving air conditioning system according to claim 4, characterized in that: The input ends of the fan coil units are respectively fixedly connected to the return pipes.
6. The mild climate air-cooling energy-saving air conditioning system according to claim 1, characterized in that: The unit controller (3), the central controller (4), the outdoor temperature sensor (5) and the outdoor humidity sensor (6) are electrically connected.