Combined cooling and heating system

Abstract

The utility model discloses a combined cooling and heating system which comprises a first heat pump mechanism and a water flow pipeline. The water flow pipeline is used for being connected with the first heat pump mechanism and absorbing heat released by the first heat pump mechanism. According to the cold and heat combined supply system, through work of the first heat pump mechanism, the temperature of cold water in the water flow pipeline can be increased while the effect of cooling the air cooler of the client side is achieved, and the requirement of a user for hot water is met; meanwhile, the first heat pump mechanism is cooled through the water flow pipeline, a cooling tower does not need to be used, the equipment occupied area and the use cost of the cooling tower are saved, and therefore the production cost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of energy equipment, and particularly relates to a combined cooling and heating supply system. Background Art

[0002] Meat food factories, slaughter processing factories, dairy product processing factories, etc. are food production and processing enterprises that need to use cold storage for preservation and also need hot water at the same time; generally, a refrigeration air conditioner and a high-temperature heat pump are equipped at the same time to meet the needs of production and processing. Equipping two devices, namely a refrigeration air conditioner and a high-temperature heat pump, requires two commissioning and installations during the installation and use process, occupying the area of two devices at the same time. Moreover, the use of a refrigeration air conditioner also requires an additional cooling tower to cool the air conditioner, which not only increases the floor area of the device but also increases the use cost of the device, thus increasing the production cost.

[0003] Therefore, the existing technology still needs to be improved and enhanced. Content of the Utility Model

[0004] In view of the above deficiencies of the existing technology, the purpose of the utility model is to provide a combined cooling and heating supply system to solve the problem that there is no device in the existing technology that has a small occupied area, low cost and can simultaneously provide cooling and high-temperature hot water.

[0005] The technical solution of the utility model is as follows:

[0006] A combined cooling and heating supply system, comprising:

[0007] A first heat pump mechanism and a water flow pipeline;

[0008] The water flow pipeline is used to be connected to the first heat pump mechanism and absorb the heat released by the first heat pump mechanism.

[0009] In the above solution, through the operation of the first heat pump mechanism, the dual demands of users for cooling and hot water are met. At the same time, the first heat pump mechanism is cooled by the water flow pipeline, eliminating the need to use a cooling tower, saving the floor area and use cost of the cooling tower, and thus reducing the production cost.

[0010] Further, the first heat pump mechanism includes: a first refrigerant pipeline, a first compressor, a first refrigerant pipeline, a first condenser, and a first throttle valve;

[0011] The first refrigerant pipeline is sequentially connected to the first compressor, the first condenser, the first throttle valve, and the client air cooler to form a first refrigerant circuit;

[0012] The first condenser is connected to the water flow pipeline, and the water flow pipeline is used to absorb the heat released by the first condenser.

[0013] In the above solution, through the operation of the first heat pump mechanism, while cooling the client's air cooler, the first condenser releases heat for the cold water in the water flow pipeline to absorb, and the cold water in the water flow pipeline can be raised to 30 - 40 °C, meeting the dual demands of users for cooling and hot water. At the same time, by cooling the first condenser through the water flow pipeline, there is no need to use a cooling tower, saving the floor area and usage cost of the cooling tower, thus reducing the production cost.

[0014] Further, the combined cooling and heating supply system further includes a second heat pump mechanism;

[0015] The second heat pump mechanism is connected to the water flow pipeline, and the water flow pipeline is used to absorb the heat released by the second heat pump mechanism.

[0016] In the above solution, the heat released by the second heat pump mechanism further heats the water in the water flow pipeline.

[0017] Further, the second heat pump mechanism includes: a second refrigerant pipeline and a second compressor, a second condenser, a second throttle valve, and an evaporator that are sequentially connected to the second refrigerant pipeline, forming a second refrigerant circuit;

[0018] The second condenser is also connected to the water flow pipeline, and the cold water in the water flow pipeline sequentially absorbs the heat released by the first condenser and the second condenser.

[0019] In the above solution, the heat released in the second condenser is absorbed by the warm water in the water flow pipeline, further raising the water temperature to a high temperature of 80 °C. The first heat pump mechanism raises the temperature of the cold water to 30 - 40 °C, and the second heat pump mechanism further raises the water temperature to become high-temperature hot water at 80 °C, thus meeting the demand for high-temperature hot water in the food processing process.

[0020] Further, the second heat pump mechanism is an air source heat pump.

[0021] In the above solution, the air source heat pump uses the outside air as the heat source, without the need for fuel and heating equipment, saving costs and being clean and environmentally friendly.

[0022] Further, the first compressor and the second compressor are screw compressors.

[0023] In the above solution, the screw compressor has high reliability, is convenient for operation and maintenance, and has a small volume, light weight, and small floor area, facilitating the operation of the combined supply system.

[0024] Further, the water inlet pipe of the water flow pipeline is connected to the tap water pipe.

[0025] In the above solution, compared with a conventional cooling tower, cooling water from the tap water is introduced through a water flow pipeline to cool the first condenser, resulting in better cooling effect, higher energy efficiency of the first heat pump mechanism. At the same time, the floor area occupied by the cooling tower and the equipment cost are saved.

[0026] Furthermore, the heating power of the first compressor 11 is 60KW, and the heat release power of the first condenser 12 is 160KW.

[0027] Furthermore, the heating power of the evaporator is 200KW, and the heating power of the second compressor is 60KW.

[0028] In the above solution, the heat release efficiency at the second condenser 22 is 400KW, and the energy efficiency ratio of the second compressor 21 reaches 10 COP. Compared with a conventional heat pump mechanism, the combined cooling and heating supply system composed of the first heat pump mechanism 1 and the second heat pump mechanism 2 has a higher energy efficiency ratio, better cooling and heating effects, and lower energy consumption.

[0029] Furthermore, the combined cooling and heating supply system further includes a skid frame mechanism for installing and fixing the first heat pump and the water flow pipeline.

[0030] In the above solution, it is convenient for the transportation and installation of the combined supply system, enabling it to be more effectively deployed and used.

[0031] This solution proposes a combined cooling and heating supply system. Through the operation of the first heat pump mechanism, while cooling the cold air blower of the client, the temperature of the cold water in the water flow pipeline can be raised to meet the dual needs of users for cooling and hot water. At the same time, the first heat pump mechanism is cooled by the water flow pipeline, eliminating the need for a cooling tower, saving the floor area occupied by the cooling tower equipment and the usage cost, thus reducing the production cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 Schematic diagram of the first heat pump mechanism of a combined cooling and heating supply system of the present utility model;

[0033] Figure 2 Schematic diagram of an embodiment of a combined cooling and heating supply system of the present utility model;

[0034] Figure 3 For Figure 2 working principle diagram;

[0035] Reference numerals in the figure: 1, first heat pump mechanism; 11, first compressor; 12, first condenser; 13, first throttle valve; 14, first refrigerant pipeline; 2, second heat pump mechanism; 21, second compressor; 22, second condenser; 23, evaporator; 24, second throttle valve; 25, second refrigerant pipeline; 3, water flow pipeline. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0036] The present utility model provides a combined cooling and heating supply system and a combined cooling and heating supply system. To make the objectives, technical solutions and effects of the present utility model clearer and more definite, the following further describes the present utility model in detail with reference to the accompanying drawings and by way of examples. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model.

[0037] Existing food production and processing enterprises need to be equipped with a refrigeration air conditioner and an air heat pump at the same time to meet the cooling and hot water requirements in production and processing in order to meet production needs. During the installation and use of the two devices, two commissioning installations are required, occupying the area of two devices at the same time, and an additional cooling tower needs to be equipped for the refrigeration air conditioner for cooling, which not only increases the floor area of the devices, but also increases the use cost of the devices and the production cost.

[0038] To solve the above technical problems, the present utility model provides a structure and technical solution of a combined cooling and heating supply system, as specifically described in the following embodiments.

[0039] As Figure 1 shown, the present utility model provides a combined cooling and heating supply system, specifically including: a first heat pump mechanism 1 and a water flow pipeline 3; the water flow pipeline 3 is used to connect with the first heat pump mechanism 1 and absorb the heat released by the first heat pump mechanism.

[0040] The first heat pump mechanism 1 includes: a first refrigerant pipeline 14, a first compressor 11, a first refrigerant pipeline 14, a first condenser 12 and a first throttle valve 13. The first compressor 11, the first condenser 12, and the first throttle valve 13 are connected to a client air cooler through the first refrigerant pipeline 14, and a first refrigerant circuit is formed among the first compressor, the first condenser, the first throttle valve and the client air cooler; the water flow pipeline 3 is connected to the first condenser 12, and the cold water in the water flow pipeline 3 absorbs the heat released by the first condenser 12.

[0041] Specifically, the client-side cooling fan acts as an evaporator in the first refrigerant circuit. The client-side cooling fan is usually installed in a cold storage. The refrigerant in the first refrigerant circuit (generally at -25°C) exchanges heat with the air in the cold storage (generally at -18°C) to lower the temperature of the cold storage. The refrigerant in the cooling fan absorbs heat and evaporates into a low-temperature and low-pressure gaseous refrigerant. The gaseous refrigerant enters the first compressor 11 for compression and temperature increase, and is lifted to a high-temperature and high-pressure gaseous refrigerant and enters the first condenser 12 to release heat and become liquid. The liquid refrigerant passes through the first throttle valve 13 for throttling and pressure reduction, and becomes a low-temperature and low-pressure refrigerant and flows back to the client-side cooling fan again to enter the next cycle. The cold water in the water flow pipeline 3 absorbs the heat released by the first condenser 12 to achieve the purpose of heating the cold water. Through the operation of the first heat pump mechanism 1, while cooling the client-side cooling fan, the heat released by the first condenser 12 is provided for the cold water in the water flow pipeline 3 to absorb, and the cold water in the water flow pipeline 3 can be raised to 30 - 40°C, meeting the dual requirements of the user for cooling and hot water. At the same time, the first heat pump mechanism 1 is cooled by the water flow pipeline 3, eliminating the need to use a cooling tower, saving the floor area and operating cost of the cooling tower, thereby reducing the production cost.

[0042] Optionally, the refrigerant includes but is not limited to ammonia, sulfur dioxide, and non-halogenated hydrocarbons, etc.

[0043] As Figure 2 shown, the combined cooling and heating supply system further includes a second heat pump mechanism 2. The second heat pump mechanism 2 is connected to the water flow pipeline 3, and the water flow pipeline 3 is used to absorb the heat released by the second heat pump mechanism 2. The heat released by the second heat pump mechanism 2 is used to further heat the water in the water flow pipeline.

[0044] The second heat pump mechanism 2 includes: a second refrigerant pipeline 25 and a second compressor 21, a second condenser 22, a second throttle valve 24, and an evaporator 23 connected through the second refrigerant pipeline 25. A second refrigerant circuit is formed among the second compressor 21, the second condenser 22, the second throttle valve 24, and the evaporator 23; the water flow pipeline 3 is connected to the first condenser 12 and the second condenser 22, and the cold water in the water flow pipeline 3 sequentially absorbs the heat released by the first condenser 12 and the second condenser 22.

[0045] As Figure 3As shown, in the second refrigerant circuit, the evaporator 23 absorbs heat from the outside air, evaporates the liquid refrigerant in the evaporator 23 into a low-temperature and low-pressure gaseous refrigerant. The gaseous refrigerant is compressed by the second compressor 21 into a high-temperature and high-pressure gaseous refrigerant, and then enters the second condenser 22 to release heat and become a liquid refrigerant. The liquid refrigerant passes through the second throttle valve 24 for throttling and pressure reduction, becoming a low-temperature and low-pressure liquid refrigerant and entering the evaporator 23 again to start the next cycle. The heat released in the second condenser 22 is absorbed by the warm water in the water flow pipeline 3, further raising the water temperature to a high temperature of 80°C. The first heat pump mechanism 1 raises the cold water to warm water at 30 - 40°C, and the second heat pump mechanism 2 further raises the water temperature to high-temperature hot water at 80°C, thus meeting the demand for high-temperature hot water in the food processing process. During the food processing process, according to different demands, different water temperature requirements are needed. For example, low-temperature water is required for cleaning, and high-temperature water is required for slaughtering.

[0046] Optionally, the second heat pump mechanism 2 is an air source heat pump. The air source heat pump uses the outside air as the heat source, without the need for fuel and heating equipment, which not only saves costs but also is clean and environmentally friendly.

[0047] Optionally, the water inlet pipe of the water flow pipeline is connected to the tap water pipe. The water flow pipeline accesses tap water as the coolant to cool the first condenser 12. The temperature of the cooling water in a conventional cooling tower is 30 - 35°C, while the temperature of tap water is generally 15 - 20°C. Compared with a conventional cooling tower, when tap water is accessed through the water flow pipeline to cool the first condenser 12, the relative temperature of tap water is lower, it absorbs more heat, and the condensation temperature of the first condenser 12 is lower. When the evaporation temperature of the air cooler and the rotation speed of the first compressor 11 are constant, the lower the condensation temperature, the greater the refrigeration coefficient of the first heat pump mechanism 1, the smaller the power consumption, the compression work of the first compressor 11 decreases, the refrigeration capacity increases, and the refrigeration effect is improved. While the refrigeration effect of the first heat pump mechanism 1 is improved, the equipment floor area and equipment usage cost of the cooling tower are also saved.

[0048] In a specific embodiment, the heat absorption power of the client-side cold air blower of the combined cooling and heating supply system is 100 KW, the heating power of the first compressor 11 is 60 KW, the heat release power of the first condenser 12 is 160 KW, the heating power of the evaporator 23 is 200 KW, and the heating power of the second compressor 21 is 40 KW. At this time, the heat release efficiency at the second condenser 22 is 400 KW, and the energy efficiency ratio of the second compressor 21 reaches 10 COP. Compared with conventional heat pump mechanisms, the combined cooling and heating supply system combined by the first heat pump mechanism 1 and the second heat pump mechanism 2 has a higher energy efficiency ratio, better cooling and heating effects, and lower energy consumption. While the first heat pump mechanism 1 is refrigerating, the heat released by the first condenser 12 is used for heat exchange with tap water to raise the temperature of the tap water to 30 - 40 °C. The second heat pump mechanism 2 further raises the water temperature to 80 °C by absorbing the heat of the air and the heat generated by the operation of the second compressor 21, meeting the user's demand for high-temperature hot water in slaughtering, hair removal, etc.

[0049] The first compressor 11 and the second compressor 21 are connected to an external power supply, and the external power supply includes but is not limited to commercial power. In special cases, the first compressor 11 and the second compressor 21 can also be powered by a generator.

[0050] The first compressor 11 and the second compressor 21 are screw compressors. Screw compressors have high reliability, are convenient for operation and maintenance, and are small in size, light in weight, and small in floor area, facilitating the operation of the combined supply system.

[0051] The combined cooling and heating supply system further includes a skid frame mechanism, which is used to install and fix the first heat pump, the second heat pump mechanism 2 and the water flow pipeline 3, facilitating the transportation and installation of the combined supply system, and enabling it to be more effectively deployed and used.

[0052] In summary, the technical solution of the present invention proposes a combined cooling and heating supply system, which not only absorbs the heat of the first condenser 12 in the first heat pump mechanism 1, but also absorbs the heat in the air through the second heat pump mechanism 2. By only consuming a small amount of electric energy to make the second compressor 21 do work, hot water with a higher temperature can be obtained. The energy efficiency ratio is higher than that of a single high-temperature heat pump, and the heating temperature is also higher than that of a single high-temperature heat pump. At the same time, the water flow pipeline 3 cools the first heat pump mechanism 1 with tap water, reducing the condensation temperature of the first condenser 12, thereby increasing the refrigeration coefficient of the first heat pump mechanism 1, reducing the power consumption, increasing the refrigerating capacity, improving the refrigeration effect, and saving the cooling equipment required for an independent cooling air conditioner, as well as the floor area and equipment cost of the cooling equipment.

[0053] It should be understood that the application of the present invention is not limited to the above examples. For those of ordinary skill in the art, improvements or transformations can be made according to the above description, and all such improvements and transformations should fall within the protection scope of the appended claims of the present invention.

Claims

1. A combined cooling and heating power supply system, characterized in that, Comprising: A first heat pump mechanism and a water flow pipeline; The water flow pipeline is used to connect with the first heat pump mechanism and absorb the heat released by the first heat pump mechanism; The first heat pump mechanism includes: a first refrigerant pipeline, a first compressor, a first refrigerant pipeline, a first condenser, and a first throttle valve; The first refrigerant pipeline is sequentially connected to the first compressor, the first condenser, the first throttle valve, and the client's air cooler to form a first refrigerant circuit; The first condenser is connected to the water flow pipeline, and the water flow pipeline is used to absorb the heat released by the first condenser; The combined cooling and heating supply system further includes a second heat pump mechanism; The second heat pump mechanism is connected to the water flow pipeline, and the water flow pipeline is used to absorb the heat released by the second heat pump mechanism; The second heat pump mechanism includes: a second refrigerant pipeline and a second compressor, a second condenser, a second throttle valve, and an evaporator that are sequentially connected to the second refrigerant pipeline to form a second refrigerant circuit; The second condenser is also connected to the water flow pipeline, and the cold water in the water flow pipeline sequentially absorbs the heat released by the first condenser and the second condenser.

2. The combined cooling and heating power supply system according to claim 1, characterized in that, The second heat pump mechanism is an air source heat pump.

3. The combined cooling and heating power supply system according to claim 1, wherein The first compressor and the second compressor are screw compressors.

4. The combined cooling and heating power supply system according to claim 1, wherein The water inlet pipe of the water flow pipeline is connected to the tap water pipe.

5. The combined cooling and heating power supply system according to claim 1, characterized in that, The heating power of the first compressor is 60KW, and the heat release power of the first condenser is 160KW.

6. The combined cooling and heating power supply system according to claim 5, wherein The heating power of the evaporator is 200KW, and the heating power of the second compressor is 60KW.

7. The combined cooling and heating power supply system according to claim 1, wherein The combined cooling and heating supply system further includes a skid frame mechanism, and the skid frame mechanism is used to install and fix the first heat pump and the water flow pipeline.

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