A hot and cold integrated circulation system

Abstract

The utility model discloses a cold and hot integrated circulation system, including a control module and a refrigeration circulation module, a heating circulation module and a constant temperature circulation module electrically connected thereto; the refrigeration circulation module includes a cold water storage tank and a compressor, a condenser and an evaporator pipeline circulated and connected along the flow direction of the refrigerant, and the evaporator pipeline is arranged in the cold water storage tank; the heating circulation module includes a hot water inlet end, a first circulating water pump, a heating rod, a hot water side of a heat exchanger and a hot water outlet end connected in sequence along the flow direction of the hot water; the constant temperature circulation module includes a second circulating water pump and a cooling valve, and the input end and the output end of the second circulating water pump are respectively connected to the circulating water outlet of the cold water storage tank and the first circulating water inlet to form a first circulating water loop; the output end of the second circulating water pump is also connected to the second circulating water inlet of the cold water storage tank after passing through the cooling valve and the cold water side of the heat exchanger in sequence to form a second circulating water loop. The utility model realizes energy saving and emission reduction, and ensures the stability of the refrigeration and heating effects.

Description

Technical Field

[0001] The utility model relates to the technical field of refrigeration and heating, and in particular to a cold and hot integrated circulation system. Background Art

[0002] With the development of science and technology and the needs of industrial production, more and more equipment and systems need to have both cooling and heating functions. Traditional cooling and heating systems are usually independent, with their own circulation systems. Such a design not only takes up a lot of space, but also has low energy efficiency and is not conducive to energy conservation and emission reduction. In order to solve this problem, the integrated cooling and heating machine is advocated, which can realize the cooling and heating functions on the same machine.

[0003] However, the existing integrated cold and hot machines still have many problems in practical applications: the water temperature cannot be fully recycled when heating or cooling the main equipment, and the equipment needs to frequently perform cooling or heating work, which is not conducive to energy saving and environmental protection; at the same time, the existing integrated cold and hot machines cannot accurately control the water temperature in the cold water storage tank, resulting in unstable cooling and heating effects. Therefore, a cold and hot integrated circulation system is urgently needed to overcome the above defects. Utility Model Content

[0004] In view of the deficiencies existing in the prior art, the utility model provides a cold and hot integrated circulation system.

[0005] The utility model discloses a cold and hot integrated circulation system, comprising a control module and a refrigeration circulation module, a heating circulation module and a constant temperature circulation module electrically connected thereto;

[0006] The refrigeration cycle module comprises a cold water storage tank and a compressor, a condenser and an evaporator pipeline connected in a refrigerant flow cycle, wherein the evaporator pipeline is arranged in the cold water storage tank;

[0007] The heating circulation module comprises a hot water inlet end, a first circulating water pump, a heating rod, a hot water side of a heat exchanger and a hot water outlet end which are sequentially connected along the hot water flow direction, and the hot water inlet end and the hot water outlet end are used to connect with the required heating equipment;

[0008] The constant temperature circulation module includes a second circulating water pump and a cooling valve. The input end and output end of the second circulating water pump are respectively connected to the circulating water outlet and the first circulating water inlet of the cold water storage tank to form a first circulating water loop; the output end of the second circulating water pump is also connected to the second circulating water inlet of the cold water storage tank through the cooling valve and the cold water side of the heat exchanger in sequence to form a second circulating water loop.

[0009] As a further improvement of the utility model, the evaporator pipe is spirally arranged in the cold water storage tank;

[0010] The outlet end of the evaporator pipe is connected to the inlet end of the compressor through a pipeline, the outlet end of the compressor is connected to the refrigerant inlet end of the condenser, the refrigerant outlet end of the condenser is connected to the first filter and the throttle valve in sequence, and then connected to the inlet end of the evaporator pipe to form a refrigeration cycle loop; the bottom of the cold water storage tank is provided with a water outlet connected to the required cooling equipment.

[0011] As a further improvement of the present invention, temperature sensors are installed at the hot water inlet, the hot water outlet, the heating rod and the cold water storage tank; and a plurality of the temperature sensors are electrically connected to the control module.

[0012] As a further improvement of the utility model, valves are installed at the hot water inlet end, the hot water outlet end, and the bottom water outlet of the cold water storage tank.

[0013] As a further improvement of the present invention, the circulating water outlet is arranged at the bottom of the cold water storage tank, and the first circulating water inlet and the second circulating water inlet are both arranged at the top of the cold water storage tank;

[0014] The top of the cold water storage tank is also connected to a water inlet through a water supply pipeline, and a second filter is provided at the water inlet.

[0015] As a further improvement of the present invention, the control module is a PLC.

[0016] Compared with the prior art, the beneficial effects of the utility model are:

[0017] The utility model provides a control module, a refrigeration cycle module, a heating cycle module and a constant temperature cycle module, and can operate the heating cycle module alone without turning on the refrigeration cycle module, thereby greatly improving the convenience of use and having the advantage of saving energy.

[0018] When the utility model works in a high temperature area above 45°C, the refrigeration circulation module may not be turned on, and the constant temperature circulation module can be directly used to circulate cooling water for temperature control and regulation, thereby effectively saving energy.

[0019] The utility model has an indirect cold and heat exchange design, which effectively improves the scaling condition of the pipeline system and effectively saves energy.

[0020] When the water temperature of the heating circulation module of the utility model exceeds the set temperature of the required heating equipment, the second circulating water loop can be connected through the cooling valve to adjust the water temperature of the heating circulation module through the heat exchanger to meet the required temperature of the equipment. At the same time, the self-circulation of water in the cold water storage tank can also be achieved through the first circulating water loop, which greatly improves the efficiency of cooling and heating, reduces electricity consumption, achieves energy conservation and emission reduction, and ensures the stability of cooling and heating effects. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 The utility model discloses a pipeline connection schematic diagram of a cold and hot integrated circulation system according to an embodiment of the utility model.

[0022] In the figure:

[0023] 1. Compressor; 2. Condenser; 3. First filter valve; 4. Throttle valve; 5. Cold water storage tank; 5-1. Second circulating water inlet; 5-2. First circulating water inlet; 5-3. Circulating water outlet; 6. Second circulating water pump; 7. Heat exchanger; 8. Cooling valve; 9. Heating rod; 10. Temperature sensor; 11. First circulating water pump; 12. Water inlet; 13. Hot water outlet; 14. Hot water inlet; 15. Water outlet; 16. Valve; 17. Second filter valve; 18. Evaporator pipe. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment 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.

[0025] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0026] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0027] The utility model is further described in detail below in conjunction with the accompanying drawings:

[0028] like Figure 1 As shown, a cold and hot integrated circulation system provided by the utility model includes a control module, a refrigeration circulation module, a heating circulation module and a constant temperature circulation module, and the refrigeration circulation module, the heating circulation module and the constant temperature circulation module are all electrically connected to the control module; wherein the refrigeration circulation module includes a cold water storage tank 5 and a compressor 1, a condenser 2 and an evaporator pipe 18 circulated and connected along the refrigerant flow direction, and the evaporator pipe 18 is arranged in the cold water storage tank 5; the heating circulation module includes a hot water inlet end 14, a first circulating water pump 11, a heating rod 9 connected in sequence along the hot water flow direction , the hot water side of the heat exchanger 7 and the hot water outlet end 13, the hot water inlet end 14 and the hot water outlet end 13 are used to connect with the required heating equipment; the constant temperature circulation module includes a second circulating water pump 6 and a cooling valve 8, the input end and the output end of the second circulating water pump 6 are respectively connected to the circulating water outlet 5-3 of the cold water storage tank 5 and the first circulating water inlet 5-2 to form a first circulating water loop; the output end of the second circulating water pump 6 is also connected to the second circulating water inlet 5-1 of the cold water storage tank 5 through the cooling valve 8 and the cold water side of the heat exchanger 7 in turn to form a second circulating water loop.

[0029] In this embodiment, by setting a control module, a refrigeration cycle module, a heating cycle module and a constant temperature cycle module, the heating cycle module can be operated independently without turning on the refrigeration cycle module, which greatly improves the convenience of use and has the advantage of saving energy; at the same time, when working in a high temperature area above 45°C, the refrigeration cycle module can be turned on, and the constant temperature cycle module can be used directly to circulate cooling water for temperature control and adjustment, which effectively saves energy; when the water temperature of the heating cycle module exceeds the set temperature of the required heating equipment, the second circulating water loop can be connected through the cooling valve 8 to adjust the water temperature of the heating cycle module through the heat exchanger 7 to meet the required temperature of the equipment. At the same time, through the first circulating water loop, the self-circulation of water in the cold water storage tank 5 can also be achieved, which greatly improves the efficiency of refrigeration and heating, reduces electricity consumption, achieves energy conservation and emission reduction, and ensures the stability of refrigeration and heating effects.

[0030] Specific:

[0031] like Figure 1 As shown, in the above embodiment, preferably, an evaporator pipe 18 is provided in the cold water storage tank 5, and the evaporator pipe 18 is spiral; a water filling port and a second circulating water inlet 5-1 are provided at the top of the cold water storage tank 5, a first circulating water inlet 5-2 is provided at the side wall position of the cold water storage tank 5 near the top, and a water outlet 15 and a circulating water outlet 5-3 are provided at the bottom of the cold water storage tank 5; the outlet end of the evaporator pipe 18 is connected to the inlet end of the compressor 1 through a pipeline, the outlet end of the compressor 1 is connected to the refrigerant inlet end of the condenser 2, and the refrigerant outlet end of the condenser 2 is connected to the first filter 3, the throttle valve 4 in sequence, and then connected to the inlet end of the evaporator pipe 18 to form a refrigeration cycle; the water outlet 15 in this embodiment is configured to be connected to the required cooling equipment.

[0032] In the above embodiment, preferably, when the cold and hot integrated circulation system is used for refrigeration, the compressor 1 and the condenser 2 start working, water is injected into the cold water storage tank 5 through the top water inlet of the cold water storage tank 5, the compressor 1 compresses the refrigerant and discharges the high-temperature, high-pressure and hot refrigerant, the refrigerant is cooled by the condenser 2, and after the impurities in the pipeline are filtered by the first filter 3, it flows into the evaporator pipeline 18 in the cold water storage tank 5 through the throttle valve 4 to refrigerate the water in the cold water storage tank 5. The throttle valve 4 in this embodiment can control the flow rate and pressure of the refrigerant, so that the performance of the chiller is more stable and the working efficiency is higher, while avoiding excessive pressure to damage the key components in the unit.

[0033] In the above embodiment, preferably, the top water inlet of the cold water storage tank 5 is connected to the water inlet 12 through a water supply pipeline, and a second filter 17 is provided at the water inlet 12 .

[0034] In the above embodiment, preferably, temperature sensors 10 are installed in the hot water inlet end 14, the hot water outlet end 13, the heating rod 9 and the cold water storage tank 5; multiple temperature sensors 10 are electrically connected to the control module; specifically, the temperature sensors 10 at the hot water inlet end 14 and the hot water outlet end 13 can monitor the temperature of the outlet hot water and the hot water returning after passing through the heating equipment, so as to determine whether the outlet hot water meets the temperature requirement of the heating equipment and monitor the temperature value of the returning hot water.

[0035] In the above embodiment, preferably, valves 16 are installed on the hot water inlet end 14, the hot water outlet end 13, the bottom outlet 15 of the cold water storage tank 5 and the first circulating water loop; specifically, the valve 16 on the first circulating water loop is installed on the pipeline between the output end of the second circulating water pump 6 and the first circulating water inlet 5-2, and the setting of the valve 16 can cooperate with the cooling valve 8 to realize the switching of the first circulating water loop and the second circulating water loop; the valves located at the hot water inlet end 14 and the hot water outlet end 13 can be used to control the inflow and outflow of hot water.

[0036] In the above embodiment, preferably, the bottom water outlet 15 of the cold water storage tank 5 is also equipped with a drain valve.

[0037] In the above embodiment, preferably, the multiple valves all include solenoid valves or ball valves. When the multiple valves are solenoid valves, the multiple solenoid valves are all electrically connected to the control module.

[0038] In the above embodiment, preferably, when the integrated cold and hot circulation system is used for heating, water of the equipment to be heated flows into the refrigeration circulation module through the hot water inlet port 14, and the hot water is sent to the heating rod 9 for heating through the first circulation water pump 11, and the heating temperature is monitored in real time by the temperature sensor on the heating rod 9; after the heated water passes through the heat exchanger 7, it re-enters the equipment to be heated from the hot water outlet port 13, and the above process is repeated to complete the heating of the equipment to be heated and the thermal circulation process of the hot water.

[0039] In the above embodiment, preferably, the refrigeration cycle module and the heating cycle module can perform refrigeration and heating at the same time. In addition, the water in the cold water storage tank 5 can also be controlled at a constant temperature by the constant temperature cycle module, as follows:

[0040] Since the temperature of the hot water returning after heating the equipment to be heated is still relatively high, especially for small equipment to be heated, the overall heat loss is explained, resulting in the temperature of the hot water returning through the hot water inlet end 14 still maintaining a relatively high temperature. After being heated by the heating rod 9, it is very easy to cause the hot water temperature to exceed the set temperature (set mold temperature) of the required heating equipment. At this time, the temperature sensor at the hot water outlet end 13 will detect the over-temperature prompt and transmit the signal to the control module. At this time, the control module controls the cooling valve 8 to open, and the cold water in the cold water storage tank 5 flows back to the cold water storage tank 5 through the second circulating water pump 6, the cooling valve, and the cold water side of the heat exchanger 7, and the circulation work of the second circulating water loop is started. At this time, the hot water flowing through the hot water side of the heat exchanger 7 will be cooled by the cold water on its cold water side to ensure that the temperature at the hot water outlet end 13 meets the set temperature (i.e., the set mold temperature) of the required heating equipment to achieve constant temperature control.

[0041] In the above embodiment, preferably, the self-circulation process of the cold water in the cold water storage tank 5 can also be realized through the first circulating water loop.

[0042] In the above embodiment, preferably, the control module is a PLC.

[0043] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may be subject to various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A cold and hot integrated circulation system, characterized in that: It includes a control module and a refrigeration cycle module, a heating cycle module and a constant temperature cycle module electrically connected thereto; The refrigeration cycle module comprises a cold water storage tank and a compressor, a condenser and an evaporator pipeline connected in a refrigerant flow cycle, wherein the evaporator pipeline is arranged in the cold water storage tank; The heating circulation module comprises a hot water inlet end, a first circulating water pump, a heating rod, a hot water side of a heat exchanger and a hot water outlet end which are sequentially connected along the hot water flow direction, and the hot water inlet end and the hot water outlet end are used to connect with the required heating equipment; The constant temperature circulation module includes a second circulating water pump and a cooling valve. The input end and output end of the second circulating water pump are respectively connected to the circulating water outlet and the first circulating water inlet of the cold water storage tank to form a first circulating water loop; the output end of the second circulating water pump is also connected to the second circulating water inlet of the cold water storage tank through the cooling valve and the cold water side of the heat exchanger in sequence to form a second circulating water loop.

2. The integrated cold and hot circulation system according to claim 1, characterized in that: The evaporator pipe is spirally arranged in the cold water storage tank; The outlet end of the evaporator pipe is connected to the inlet end of the compressor through a pipeline, the outlet end of the compressor is connected to the refrigerant inlet end of the condenser, the refrigerant outlet end of the condenser is connected to the first filter and the throttle valve in sequence, and then connected to the inlet end of the evaporator pipe to form a refrigeration cycle loop; the bottom of the cold water storage tank is provided with a water outlet connected to the required cooling equipment.

3. The integrated cold and hot circulation system according to claim 1, characterized in that: Temperature sensors are installed in the hot water inlet, the hot water outlet, the heating rod and the cold water storage tank; and a plurality of the temperature sensors are electrically connected to the control module.

4. The integrated cold and hot circulation system according to claim 1, characterized in that: Valves are installed on the hot water inlet, the hot water outlet, the bottom water outlet of the cold water storage tank and the first circulating water loop.

5. The integrated cold and hot circulation system according to claim 1, characterized in that: The circulating water outlet is arranged at the bottom of the cold water storage tank, and the first circulating water inlet and the second circulating water inlet are both arranged at the top of the cold water storage tank; the top of the cold water storage tank is also connected to the water inlet through a water supply pipeline, and a second filter is provided at the water inlet.

6. The integrated cold and hot circulation system according to claim 1, characterized in that: The control module is a PLC.

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