Combined cooling and heating heat pump system

Abstract

The utility model discloses a combined cooling and heating heat pump system which comprises a first flow path and a second circulation flow path, and the first flow path and the second circulation flow path are jointly provided with a double-effect cold and hot water unit, a heat pump unit, a monitoring control system and a heat exchanger. The first flow path and the second circulation flow path are connected through the double-effect cold and hot water unit and the heat pump unit. The monitoring system comprises a temperature transmitter, a flow meter and a control valve. The refrigerating and heating system has the advantages that the refrigerating and heating functions can be achieved only by arranging one set of system. The configuration cost is saved, the utilization rate of equipment is improved, and meanwhile, the installation space occupied by the configuration system is reduced. According to the utility model, a system optimization strategy of intelligent control and additional use of two sets of refrigerating and heating units is adopted, and the working efficiency and the switching degree of each component in the system are regulated and controlled in real time according to user requirements. The energy utilization rate is improved, and the user experience is improved.

Description

Technical Field

[0001] The utility model relates to the field of heat pump systems, in particular to a combined cooling and heating heat pump system. Background Art

[0002] In recent years, with the growth of industrial heat demand, the application of large-scale central heating systems has become increasingly popular. Among these heating systems, heat pump systems are favored and widely used as a clean, environmentally friendly, energy-saving and efficient heating method.

[0003] However, most of the heat pump systems on the market now have a single function, either cooling or heating. Generally speaking, in order to meet the needs of cooling and heating at the same time, two sets of equipment are usually required to be installed, which not only increases the cost but also takes up more installation space. At the same time, the heating efficiency of the heat pump system in complex environments is not high, and it is difficult to meet the needs of various working conditions in reality. In addition, the traditional heat pump system still has deficiencies in the control strategy of the system, which will cause energy waste, information feedback and untimely adjustment. Utility Model Content

[0004] 1. Problems to be solved

[0005] The technical problem to be solved by the utility model is to provide a combined cooling and heating heat pump system in view of the current status of the prior art.

[0006] (II) Technical solution

[0007] The utility model is implemented by the following technical scheme: The utility model proposes a combined heat and cold supply heat pump system, including a first flow path and a second circulation flow path, wherein the first flow path and the second circulation flow path are jointly provided with a double-effect cold and hot water unit, a heat pump unit, a monitoring control system, and a heat exchanger. The first flow path and the second circulation flow path are connected through the double-effect cold and hot water unit and the heat pump unit. The monitoring control system includes a temperature transmitter, a flow meter, and a control valve. The double-effect cold and hot water unit is used to heat or cool the medium in the system, and the heat pump unit is used to heat or cool the medium in the system. The heat exchanger is used to heat or cool the medium in the system. When the monitoring control system detects that the demand for cold or heat is at the first gear, only the double-effect cold and hot water unit in the system operates. When the monitoring control system detects that the demand for cold or heat is at the second gear, the double-effect cold and hot water unit and the heat pump unit in the system operate simultaneously.

[0008] By adopting the above technical solution, this combined heat and cold supply heat pump system is equipped with a double-effect hot and cold water unit and a heat pump unit to realize the functions of cooling and heating at the same time, without the need for users to spend more costs to configure two systems for cooling and heating. When the monitoring and control system detects an increase or decrease in the cooling and heating demand at the user end, it adjusts the working state and working efficiency of the double-effect hot and cold water unit and the heat pump unit through intelligent control. Among them, when the user's cooling and heating demand is low, only the double-effect hot and cold water unit is in working state; when the user's cooling and heating demand exceeds the predetermined threshold, the double-effect hot and cold water unit and the heat pump unit are in working state at the same time. This monitoring and control strategy not only avoids energy waste, but also improves the user experience through the rapid response characteristics of the monitoring and control system.

[0009] Furthermore, a compressor is installed inside the heat pump unit, and a refrigerant regulating valve is arranged inside the heat pump unit. The double-effect hot and cold water unit includes an absorber, a generator, a condenser and an evaporator. The heat exchanger is a plate heat exchanger.

[0010] By adopting the above technical solution, the double-effect hot and cold water unit, the heat pump unit and the heat exchanger can stably and continuously play the role of cooling or heating, and their working efficiency can be adjusted.

[0011] Furthermore, the flowmeter includes a heat source water flowmeter and a hot water flowmeter. The first flow path is connected to the wheat soaking system. An electric gate valve is provided between the wheat soaking system and the first flow path. The first flow path also includes other process control monitoring equipment; the other process control monitoring equipment is used to monitor and regulate the pressure, flow, temperature or liquid level parameters in the first flow path. The first flow path is provided with a vent hole. The second circulation flow path also includes other process control monitoring equipment; the other process control monitoring equipment is used to monitor and regulate the pressure, flow, temperature or liquid level parameters in the second circulation flow path.

[0012] By adopting the above technical solution, the changes in the amount of cold and hot water and the temperature requirements in the wheat soaking system are monitored to achieve accurate collection of the user's demand information for cooling and heating. The monitoring and control system that receives this information will then share the demand information to allow the cooling and heating equipment in the system to be quickly adjusted. Next, flow meters, control valves, temperature transmitters, and other process control monitoring equipment are set in the flow path to accurately obtain parameters such as flow and temperature at different locations in the system. Finally, the flow and temperature of the liquid in the system are monitored and adjusted in real time in conjunction with the cooling and heating demand information. Through the design of the above solution, this combined cooling and heating heat pump system not only meets the two functions of cooling and heating, but also has the effect of intelligent monitoring and adjustment.

[0013] (III) Beneficial effects

[0014] 1. In view of the current status of the prior art, the utility model can realize the functions of cooling and heating by configuring only one system, which saves configuration costs, improves the utilization rate of equipment, and also reduces the installation space occupied by the configuration system.

[0015] 2. In view of the existing technology, the heating efficiency of the heat pump system in complex environments is not high, and there is a defect that it is difficult to meet the needs of various working conditions in reality. The utility model adopts an intelligent control system and adds a system optimization strategy using two sets of refrigeration and heating units to adjust the working efficiency and switching degree of each component in the system in real time according to user needs. It not only improves energy utilization, but also improves user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The drawings constituting a part of the present application are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and the description thereof are used to explain the present invention and do not constitute an improper limitation on the present invention.

[0017] Figure 1 It is a schematic diagram of a combined cooling and heating heat pump system described in the utility model;

[0018] Figure 2 It is a flow diagram of the inlet and outlet liquids of the first flow path of a combined cooling and heating heat pump system described in the utility model;

[0019] Figure 3 It is a liquid circulation flow diagram of the second circulation flow path of a combined cooling and heating heat pump system described in the utility model;

[0020] Figure 4 It is a schematic diagram of the liquid flow direction of a combined cooling and heating heat pump system described in the utility model.

[0021] The reference numerals are as follows:

[0022] 1. First flow path; 2. Second circulation flow path; 3. Double-effect hot and cold water unit; 4. Heat pump unit; 5. Monitoring and control system; 6. Heat exchanger; 7. Temperature transmitter; 8. Flow meter; 9. Control valve; 10. Compressor; 11. Refrigerant regulating valve; 12. Absorber; 13. Generator; 14. Condenser; 15. Evaporator; 16. Heat source water flow meter; 17. Hot water flow meter; 18. Plate heat exchanger; 19. Wheat soaking system; 20. Electric gate valve; 21. Vent; 22. Other process control and monitoring equipment. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of them. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] See also Figure 1 The utility model provides a technical solution: a combined heat and cold supply heat pump system, comprising a first flow path 1 and a second circulation flow path 2, wherein the first flow path 1 and the second circulation flow path 2 are jointly provided with a double-effect cold and hot water unit 3, a heat pump unit 4, a monitoring and control system 5, and a heat exchanger 6. The first flow path 1 and the second circulation flow path 2 are connected through the double-effect cold and hot water unit 3 and the heat pump unit 4. The monitoring and control system 5 includes a temperature transmitter 7, a flow meter 8, and a control valve 9. The double-effect cold and hot water unit 3 is used to heat or cool the medium in the system, and the heat pump unit 4 is used to heat or cool the medium in the system. The heat exchanger 6 is used to heat or cool the medium in the system. When the monitoring and control system 5 detects that the demand for cold or heat is at the first gear, only the double-effect cold and hot water unit 3 in the system is running. When the monitoring and control system 5 detects that the demand for cold or heat is at the second gear, the double-effect cold and hot water unit 3 and the heat pump unit 4 in the system are running at the same time.

[0025] Preferably, a compressor 10 is installed inside the heat pump unit 4 , and a refrigerant regulating valve 11 is provided inside the heat pump unit 4 .

[0026] Preferably, the double-effect hot and cold water unit 3 includes an absorber 12 , a generator 13 , a condenser 14 and an evaporator 15 .

[0027] Preferably, the flow meter 8 includes a heat source water flow meter 16 and a hot water flow meter 17 .

[0028] Preferably, the heat exchanger 6 is a plate heat exchanger 18 .

[0029] Preferably, the first flow path 1 is connected to the malt soaking system 19 .

[0030] Preferably, an electric gate valve 20 is provided between the wheat soaking system 19 and the first flow path 1 .

[0031] Preferably, the first flow path 1 also includes other process control monitoring equipment 22; the other process control monitoring equipment 22 is used to monitor and regulate the pressure, flow, temperature or liquid level parameters in the first flow path 1.

[0032] Preferably, the second circulation flow circuit 2 also includes other process control monitoring equipment 22 ; the other process control monitoring equipment 22 is used to monitor and regulate the pressure, flow, temperature or liquid level parameters in the second circulation flow circuit 2 .

[0033] The utility model realizes the effects of cooling, heating and intelligent regulation in the system through the following contents: the combined heat pump system is equipped with a double-effect cold and hot water unit 3, a heat pump unit 4 and a heat exchanger 6 to heat or cool the medium (liquid or air) in the system. First, the monitoring control system 5 obtains the cold and hot demand of the user end by monitoring the changes in the amount of cold and hot water and the temperature requirements in the wheat soaking system 19. When the cold and hot demand increases or decreases, the working state and working efficiency of the double-effect cold and hot water unit 3 and the heat pump unit 4 are regulated by intelligent control and the switching degree of the compressor 10 or the refrigerant regulating valve 11 is automatically adjusted. Among them, when the user's cold and hot demand is low and the first system is used, only the double-effect cold and hot water unit 3 is in working state; when the user's cold and hot demand exceeds the predetermined threshold and the second system is used, the double-effect cold and hot water unit 3 and the heat pump unit 4 are in working state at the same time. The flow path in the system is equipped with flow meter 8, control valve 9, temperature transmitter 7, and other process control monitoring equipment 22 (such as control valve 9, pump, pressure indicator, meter, etc.) to accurately obtain parameters such as flow rate and temperature. Then, the flow rate and temperature of the medium (liquid or gas) in the system are monitored and adjusted in real time in accordance with the demand information for cooling and heating.

[0034] See also Figures 2 to 4 , the liquid flow working process in the utility model system is:

[0035] like Figure 2 In the first flow path 1, the heat source water (inlet water) flows through other process control monitoring equipment 22, the air vent 21, and the temperature transmitter 7 in sequence, and is transmitted to the double-effect hot and cold water unit 3 and the heat pump unit 4. The heat source water (inlet water) after heating or cooling continues to flow through the temperature transmitter 7 and is transported to the heat source water flow meter 16, and finally the heat source water (inlet water) flows into the wheat soaking system 19 through the electric gate valve 20.

[0036] like Figure 3 In the second circulation flow path 2, the hot water (circulating water) cooled by the double-effect hot and cold water unit 3 and the heat pump unit 4 flows through the temperature transmitter 7 and is transported to the hot water flow meter 17, then to the control valve 9, and finally to the plate heat exchanger 18 for heating or cooling. Subsequently, the treated hot water (circulating water) flows through the temperature transmitter 7 and is transported back to the double-effect hot and cold water unit 3 and the heat pump unit 4 through other process control and monitoring equipment 22.

[0037] like Figure 4After the heat source water (inlet water) flows to the double-effect hot and cold water unit 3 and the heat pump unit 4, it is heated or cooled by the double-effect hot and cold water unit 3 and the heat pump unit 4 and heated or cooled by the plate heat exchanger 18 in the circulation flow path. The heat source water (inlet water) reaches a predetermined temperature and flows through the temperature transmitter 7, the flow meter 8 and the electric gate valve 20 to be transported to the wheat soaking system 19 for use by users.

[0038] The design concept and effect of the utility model: The utility model optimizes the system design and control strategy so that the heat pump system can maintain a high heating efficiency under different environments. Specifically, the system adopts an intelligent control strategy to automatically adjust the refrigerant flow and the speed of the compressor 10 according to the ambient temperature, the terminal cooling and heating demand, and the user's needs to achieve energy-saving operation. By real-time monitoring of the terminal cooling and heating demand, the heat pump system is adjusted to ensure that the entire system is in a state of efficient energy use. The utility model realizes the dual functions of cooling and heating through a set of equipment, improves the utilization rate of the equipment, and reduces the purchase cost; adopts an intelligent control strategy to improve the heating efficiency and reduce energy consumption; it is easy to install, occupies a small area, and is easy to promote and apply.

[0039] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A combined cooling and heating heat pump system, characterized in that: It includes a first flow path and a second circulation flow path, wherein the first flow path and the second circulation flow path are jointly provided with a double-effect cold and hot water unit, a heat pump unit, a monitoring control system, and a heat exchanger; the first flow path and the second circulation flow path are connected through the double-effect cold and hot water unit and the heat pump unit; the monitoring control system includes a temperature transmitter, a flow meter and a control valve; the double-effect cold and hot water unit is used to heat or cool the medium in the system, and the heat pump unit is used to heat or cool the medium in the system; the heat exchanger is used to heat or cool the medium in the system; when the monitoring control system detects that the demand for cold or heat is at the first gear, only the double-effect cold and hot water unit in the system operates; when the monitoring control system detects that the demand for cold or heat is at the second gear, the double-effect cold and hot water unit and the heat pump unit in the system operate simultaneously.

2. A combined cooling and heating heat pump system according to claim 1, characterized in that: A compressor is installed inside the heat pump unit, and a refrigerant regulating valve is arranged inside the heat pump unit.

3. A combined cooling and heating heat pump system according to claim 1, characterized in that: The double-effect cold and hot water machine unit comprises an absorber, a generator, a condenser and an evaporator.

4. A combined cooling and heating heat pump system according to claim 1, characterized in that: The flow meter includes a heat source water flow meter and a hot water flow meter.

5. The combined cooling and heating heat pump system according to claim 1, characterized in that: The heat exchanger is a plate heat exchanger.

6. The combined cooling and heating heat pump system according to claim 1, characterized in that: The first flow path is connected to the wheat soaking system.

7. A combined cooling and heating heat pump system according to claim 6, characterized in that: An electric gate valve is arranged between the wheat soaking system and the first flow path.

8. The combined cooling and heating heat pump system according to claim 1, characterized in that: The first flow path also includes other process control monitoring equipment; the other process control monitoring equipment is used to monitor and regulate the pressure, flow, temperature or liquid level parameters in the first flow path.

9. A combined cooling and heating heat pump system according to claim 8, characterized in that: The first flow path is provided with an air release hole.

10. The combined cooling and heating heat pump system according to claim 1, characterized in that: The second circulation flow circuit also includes other process control monitoring equipment; the other process control monitoring equipment is used to monitor and regulate the pressure, flow, temperature or liquid level parameters in the second circulation flow circuit.

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