Multi-connected power supply auxiliary heating temperature control system

Abstract

The utility model discloses a multi-connected power supply auxiliary heating temperature control system, the multi-connected power supply auxiliary heating temperature control system comprises a refrigerant system and a water system, the refrigerant system comprises a compressor, an expansion valve, a four-way valve, a condenser and an evaporator; the water system comprises a first water pump, a heater, a first water storage tank, a second water storage tank, a second water pump and a first switch valve. The water system side of the condenser is a normal heat end, an additional heater is provided for the water system side of the condenser, the electric auxiliary heating function is added, the defect that the heating capacity of the compressor is insufficient is overcome, the energy-saving effect of the high energy efficiency ratio of the compressor can be guaranteed, and higher heating capacity can be obtained according to practical requirements. By controlling the working frequency and power of the compressor and the power of the heater, the required temperature of cold water and hot water can be controlled, the temperature of external heating and refrigerating equipment is controlled, the temperature control precision is improved, and the requirements of different temperature working conditions are met.

Description

A multi-powered auxiliary heating temperature control system Technical Field

[0001] This utility model belongs to the technical field of temperature control equipment, and in particular relates to a multi-powered auxiliary heating temperature control system. Background Technology

[0002] Vapor compression chiller units are a type of refrigeration and heating system widely used in industrial and commercial fields. They achieve the effect of cooling or heating by using a circulating liquid refrigerant to absorb and remove heat from the space to be cooled, and then dissipate the heat elsewhere.

[0003] Chinese patent application CN101644508A discloses a multi-split air conditioning system with both chilled and hot water functions. This system includes a refrigerant system and a water system. The refrigerant system comprises a compressor, a four-way valve for refrigerant, a condenser, and a shell-and-tube heat exchanger. It features the ability to independently provide air conditioning cooling, heating, chilled water, and hot water, or simultaneously provide both cooling and heating. However, it does not fully utilize both the cooling and heating ends, using only one side of the circuit. It cannot simultaneously provide cooling and heating, and its temperature control accuracy is low, making it difficult to meet the needs of different applications. Summary of the Invention

[0004] This invention aims to address the shortcomings of existing technologies by providing a multi-powered auxiliary heating temperature control system with high temperature control accuracy, meeting the needs of different temperature operating conditions.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0006] A multi-powered auxiliary heating temperature control system includes a refrigerant system and a water system. The refrigerant system includes a compressor, an expansion valve, a four-way valve, a condenser, and an evaporator. The water system includes a first water pump and a first water storage tank.

[0007] The four ports of the four-way valve are respectively connected to the inlet of the compressor, the outlet of the compressor, the refrigerant side of the condenser, and the refrigerant side of the evaporator through pipes;

[0008] The first end of the water system side of the condenser is connected to the first end of the first water storage tank through a first pipe. A first water pump is provided on the first pipe. The second end of the first water storage tank is connected to the second end of the water system side of the condenser through a pipe.

[0009] The water system also includes a second water pump, a second water storage tank, and a heater;

[0010] The first end of the water system side of the evaporator is connected to the first end of the second water storage tank through a second pipe. A second water pump is provided on the second pipe. The second end of the second water storage tank is connected to the second end of the water system side of the evaporator through a pipe.

[0011] A heater is installed on the pipe between the outlet of the first water pump and the first end of the first water storage tank;

[0012] The water system side of the condenser is the normally heated end, and the water system side of the evaporator is the normally cold end. Adjusting the opening and closing of the four-way valve allows the functions of the condenser and the evaporator to be interchanged.

[0013] During operation, since the water system side of the condenser is a constant hot end, an additional heater is provided on the water system side of the condenser. This utility model compensates for the insufficient heating of the compressor by adding an electric auxiliary heating function, which can not only ensure the energy-saving effect of the compressor's high energy efficiency ratio, but also obtain stronger heating capacity according to practical needs.

[0014] This invention can control the required cold and hot water temperatures by controlling the compressor's operating frequency, power, and heater power, and can also control the temperature of external heating / cooling equipment, thereby improving temperature control accuracy and meeting the needs of different temperature conditions.

[0015] Furthermore, the compressor outlet is connected to the first port of the four-way valve via a pipe, the second port of the four-way valve is connected to the first end of the refrigerant side of the evaporator via a pipe; the second end of the refrigerant side of the evaporator is connected to the first end of the expansion valve via a pipe, the second end of the expansion valve is connected to the second end of the refrigerant side of the condenser via a pipe; the first end of the refrigerant side of the condenser is connected to the third port of the four-way valve via a pipe, and the fourth port of the four-way valve is connected to the compressor inlet via a pipe.

[0016] When the switches between the first and second ports and between the third and fourth ports of the four-way valve are opened, and the switches between the first and third ports and between the second and fourth ports are closed, the first and second ports of the four-way valve are connected, and the third and fourth ports are connected. The evaporator and condenser generate cooling and heating capacity respectively. The cooling and heating capacity generated by the refrigerant system can exchange heat with the water circuit through the evaporator and condenser to form cold water and hot water, which are used to supply cooling and heating to external equipment that needs cooling / heating respectively.

[0017] When the switches between the first and second ports and between the third and fourth ports of the four-way valve are closed, and the switches between the first and third ports and between the second and fourth ports are opened, the first and third ports of the four-way valve are connected, and the second and fourth ports are connected, which allows the functions of the evaporator and condenser to be reversed. The evaporator and condenser generate heating and cooling capacity respectively. The heating and cooling capacity generated by the refrigerant system can exchange heat with the water circuit through the condenser and evaporator to form cold water and hot water, which are used to supply cooling and heating to external equipment that needs cooling / heating respectively.

[0018] Furthermore, a first bypass is provided on the pipeline between the heater and the first end of the first water storage tank. A first switch valve and a heat dissipation box are sequentially provided on the first bypass. The heat dissipation box is connected to the pipeline between the second end of the first water storage tank and the second end of the water system side of the condenser through a pipeline. Cooling equipment is provided outside the heat dissipation box.

[0019] When the condenser is heating and the evaporator is cooling, in cooling mode only, the hot water can dissipate excess heat through the heat sink and cooling equipment to keep the compressor temperature within the operating temperature range, thus ensuring stable cooling efficiency and operating power.

[0020] Furthermore, a filter and a temperature switch are installed on the pipe between the fourth port of the four-way valve and the inlet of the compressor.

[0021] Furthermore, a liquid storage tank is installed on the pipeline between the outlet of the compressor and the first port of the four-way valve.

[0022] Furthermore, a temperature sensor is installed on the pipe between the first end of the water system side of the condenser and the inlet of the first water pump.

[0023] Furthermore, a temperature sensor is installed on the pipe between the second end of the heater and the first end of the first water storage tank.

[0024] Furthermore, a temperature sensor is installed on the pipe between the first end of the water system side of the evaporator and the inlet of the second water pump.

[0025] Furthermore, at least one second bypass is provided on the pipeline between the heater and the first end of the first water storage tank. A second switching valve and a first load are sequentially provided on the second bypass. The first load is connected to the pipeline between the second end of the first water storage tank and the second end of the water system side of the condenser through a pipeline.

[0026] Furthermore, at least one third bypass is provided on the pipeline between the outlet of the second water pump and the first end of the second water storage tank. A third switch valve and a second load are sequentially provided on the third bypass. The second load is connected to the pipeline between the second end of the second water storage tank and the second end of the water system side of the evaporator through a pipeline.

[0027] Furthermore, the first load is a refrigeration device or a heating device.

[0028] Furthermore, the second load is a refrigeration device or a heating device.

[0029] Compared with the prior art, the beneficial effects of this utility model are:

[0030] This invention provides an additional heater on the water system side of the condenser. The newly added electric auxiliary heating function provides stronger heating capacity, compensating for the insufficient heating capacity of the compressor. This ensures the energy-saving effect of the compressor's high energy efficiency ratio and allows for enhanced heating capacity based on practical needs. By controlling the compressor's operating frequency, power, and heater power, the required cold and hot water temperatures can be controlled, and the temperature of external heating / cooling equipment can be controlled, improving temperature control accuracy and meeting the needs of different temperature conditions.

[0031] The system of this utility model has a multi-power supply function, and can be used for multiple purposes. It can provide cooling or heating only, or heating and cooling at the same time, to meet different needs. Attached Figure Description

[0032] Figure 1 is a schematic diagram of the multi-power supply auxiliary heating temperature control system of this utility model;

[0033] Figure 2 is a schematic diagram of the four-way valve connection during condenser heating and evaporator cooling in an embodiment of this utility model;

[0034] Figure 3 is a schematic diagram of the four-way valve connection when the condenser is cooling and the evaporator is heating according to an embodiment of the present invention.

[0035] In the picture:

[0036] 1-Compressor, 2-Liquid tank, 3-Temperature switch, 4-Filter, 5-Expansion valve, 6-Four-way valve, 7-Condenser, 8-Evaporator, 9-Temperature sensor, 10-First water pump, 11-Heater, 12-Cooling equipment, 13-Heat dissipation box, 14-First load, 15-Second switching valve, 16-First water tank, 17-Second load, 18-Second water pump, 19-Second water tank, 20-First switching valve, 21-Third switching valve. Detailed Implementation

[0037] The present invention will be described in detail below with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in the embodiments of the present invention can be combined with each other. For ease of description, the terms "upper," "lower," "left," and "right" appearing below only indicate that they correspond to the upper, lower, left, and right directions in the accompanying drawings and do not limit the structure.

[0038] Example

[0039] As shown in Figure 1, the multi-powered auxiliary heating temperature control system of this embodiment includes a refrigerant system and a water system. The refrigerant system includes a compressor 1, an expansion valve 5, a four-way valve 6, a condenser 7, and an evaporator 8. The water system includes a first water pump 10, a heater 11, a cooling device 12, a heat sink 13, a first water storage tank 16, a second water pump 18, a second water storage tank 19, and a first switching valve 20.

[0040] The outlet of compressor 1 is connected to the first port of four-way valve 6 via a pipe, and the second port of four-way valve 6 is connected to the first end of refrigerant side of evaporator 8 via a pipe; the second end of refrigerant side of evaporator 8 is connected to the first end of expansion valve 5 via a pipe, and the second end of expansion valve 5 is connected to the second end of refrigerant side of condenser 7 via a pipe; the first end of refrigerant side of condenser 7 is connected to the third port of four-way valve 6 via a pipe, and the fourth port of four-way valve 6 is connected to the inlet of compressor 1 via a pipe.

[0041] The first end of the water system side of the condenser 7 is connected to the inlet of the first water pump 10 through a pipe, and the outlet of the first water pump 10 is connected to the first end of the heater 11 through a pipe. The second end of the heater 11 is connected to the first end of the first water storage tank 16 through a pipe, and the second end of the first water storage tank 16 is connected to the second end of the water system side of the condenser 7 through a pipe. A first bypass is provided on the pipe between the second end of the heater 11 and the first end of the first water storage tank 16. A first switch valve 20 and a heat sink 13 are sequentially provided on the first bypass. The heat sink 13 is connected to the pipe between the second end of the first water storage tank 16 and the second end of the water system side of the condenser 7 through a pipe. A cooling device 12 is provided outside the heat sink 13.

[0042] The first end of the water system side of the evaporator 8 is connected to the inlet of the second water pump 18 through a pipe, the outlet of the second water pump 18 is connected to the first end of the second water storage tank 19 through a pipe, and the second end of the second water storage tank 19 is connected to the second end of the water system side of the evaporator 8 through a pipe.

[0043] A filter 4 and a temperature switch 3 are installed on the pipe between the fourth port of the four-way valve 6 and the inlet of the compressor 1.

[0044] A liquid storage tank 2 is installed on the pipeline between the outlet of compressor 1 and the first interface of four-way valve 6.

[0045] A temperature sensor 9 is installed on the pipe between the first end of the water system side of the condenser 7 and the inlet of the first water pump 10; a temperature sensor 9 is installed on the pipe between the second end of the heater 11 and the first end of the first water storage tank 16; a temperature sensor 9 is installed on the pipe between the first end of the water system side of the evaporator 8 and the inlet of the second water pump 21.

[0046] A second bypass is provided on the pipe between the second end of the heater 11 and the first end of the first water storage tank 16. A second switch valve 15 and a first load 14 are sequentially installed on the second bypass. The first load 14 is connected to the pipe between the second end of the first water storage tank 16 and the second end of the water system side of the condenser 7 through a pipe. The first load 14 is a refrigeration device or a heating device.

[0047] Two third bypasses are installed on the pipeline between the outlet of the second water pump 18 and the first end of the second water storage tank 19. A third switch valve 21 and a second load 17 are installed sequentially on the third bypasses. The second load 17 is connected to the pipeline between the second end of the second water storage tank 19 and the second end of the water system side of the evaporator 8. The second load 17 is a refrigeration device or a heating device.

[0048] Cooling equipment 12 includes fans, refrigeration equipment includes chillers, air conditioners, capillary tubes, etc., and heating equipment includes air conditioners, floor heating, injection molding machines, electric water heaters, industrial mold temperature controllers, etc.

[0049] As shown in Figure 2, when the switches between the first and second ports and between the third and fourth ports of the four-way valve 6 are opened, and the switches between the first and third ports and between the second and fourth ports are closed, the first and second ports of the four-way valve 6 are connected, and the third and fourth ports are connected. The evaporator 8 and condenser 7 generate cooling and heating capacity respectively. The cooling and heating capacity generated by the refrigerant system can exchange heat with the water circuit through the evaporator 8 and condenser 7 to form cold water and hot water, which are used to supply cooling and heating to external equipment that needs cooling / heating respectively. The first load 14 is a heating device, and the second load 17 is a cooling device.

[0050] When only cooling is needed, the first switch valve 20 and the third switch valve 21 are opened, and the second switch valve 15 is closed. The hot water dissipates excess heat through the heat sink 13 and the cooling device 12.

[0051] When heating is required only, the second switch valve 15 is opened and the first switch valve 20 and the third switch valve 21 are closed. Cold water passes through the second water storage tank 19 and exchanges heat with the external environment.

[0052] When simultaneous cooling and heating are required, the second switch valve 15 and the third switch valve 21 are opened, and the first switch valve 20 is closed. The evaporator 8 and the condenser 7 generate cooling capacity and heating capacity respectively. The cooling capacity and heating capacity generated by the refrigerant system can exchange heat with the water circuit through the evaporator 8 and the condenser 7 to form cold water and hot water, which are used to cool and heat external equipment that needs cooling / heating respectively.

[0053] As shown in Figure 3, when the switch between the first and second ports and the switch between the third and fourth ports of the four-way valve 6 are closed, and the switch between the first and third ports and the switch between the second and fourth ports are opened, the first and third ports of the four-way valve 6 are connected, and the second and fourth ports are connected, which can realize the function swap of the evaporator 8 and the condenser 7.

[0054] When only cooling is needed, the second switch valve 15 is opened, and the first switch valve 20 and the third switch valve 21 are closed. Hot water exchanges heat with the outside environment through the second water storage tank 19.

[0055] When heating is required only, the third switch valve 21 is opened, and the second switch valve 15 and the first switch valve 20 are closed. Cold water passes through the first water storage tank 16 and exchanges heat with the external environment.

[0056] When simultaneous cooling and heating are required, the second switch valve 15 and the third switch valve 21 are opened, and the first switch valve 20 is closed. The evaporator 8 and the condenser 7 generate heating and cooling capacity respectively. The cooling and heating capacity generated by the refrigerant system can exchange heat with the water circuit through the condenser 7 and the evaporator 8 to form cold water and hot water, which are used to supply cooling and heating to external equipment that needs cooling / heating respectively.

[0057] In this embodiment, the water system side of the condenser is the constant hot end. An additional heater is provided on the water system side of the condenser to add an electric auxiliary heating function, which makes up for the lack of heat in the compressor. This not only ensures the energy-saving effect of the compressor's high energy efficiency ratio, but also allows for stronger heating capacity through the added electric auxiliary heating function according to practical needs.

[0058] By controlling the compressor's operating frequency and power, as well as the heater's power, the required cold and hot water temperatures can be controlled, and the temperature of external heating / cooling equipment can be controlled, improving temperature control accuracy and meeting the needs of different temperature conditions. Furthermore, temperature sensors before and after the heater can monitor the inlet and outlet water temperatures, and by adjusting the power, a high-precision temperature control capability (±0.5℃) can be achieved.

[0059] The multi-powered auxiliary heating temperature control system of this embodiment is suitable for industrial production, realizing the functions of temperature control equipment such as mold temperature controllers and water chillers. For example, after the hot end is connected to the injection molding machine, it provides the mold with a high-precision water temperature, improving the product yield; the cold end water is introduced into the equipment that needs to be cooled, realizing the function of a water chiller. In addition, the cooling end can also be connected to air conditioners, capillary tubes and other equipment that need cooling.

[0060] The multi-power auxiliary heating temperature control system in this embodiment has a multi-power function, enabling one machine to serve multiple purposes and fully utilize the energy of both the cooling and heating ends. The heating end can be used as a heating device such as an electric water heater, floor heating, air conditioner hot air, or industrial mold temperature controller, or it can be used without heating function, with heat dissipation through direct external fan (i.e., outdoor unit heat dissipation). The cooling end can be used for applications such as air conditioning refrigeration, industrial chiller refrigeration, and capillary tube refrigeration.

[0061] In this embodiment, the external heating or cooling equipment can be a single device or multiple different devices. As the total number of devices n increases, it can be called an n-type combined heat and power system. For example, if the hot end is connected to a mold temperature controller and the cold end is used for three functions: a chiller and an air conditioner, it can be called a tri-type combined heat and power system.

[0062] A multi-generation system is a comprehensive energy supply technology that uses a single energy input (such as electricity) to simultaneously produce two or more forms of energy (such as cooling and hot water), i.e., cold water and hot water on both sides, to achieve cascaded utilization and efficient conversion of energy.

[0063] The above embodiments should be understood as being used only to illustrate the present invention more clearly, and not to limit the scope of the present invention. After reading the present invention, any modifications of the embodiments by those skilled in the art in various equivalent forms fall within the scope defined by the appended claims.

Claims

1. A multi-powered auxiliary heating temperature control system, comprising a refrigerant system and a water system, wherein the refrigerant system comprises a compressor (1), an expansion valve (5), a four-way valve (6), a condenser (7), and an evaporator (8); the water system comprises a first water pump (10) and a first water storage tank (16); the four ports of the four-way valve (6) are respectively connected to the inlet of the compressor (1), the outlet of the compressor (1), the refrigerant side of the condenser (7), and the refrigerant side of the evaporator (8) via pipes; the first end of the water system side of the condenser (7) is connected to the first end of the first water storage tank (16) via a first pipe, the first water pump (10) is provided on the first pipe, and the second end of the first water storage tank (16) is connected to the second end of the water system side of the condenser (7) via a pipe; characterized in that: The water system also includes a second water pump (18), a second water storage tank (19), and a heater (11); the first end of the water system side of the evaporator (8) is connected to the first end of the second water storage tank (19) through a second pipe, and the second water pump (18) is provided on the second pipe. The second end of the second water storage tank (19) is connected to the second end of the water system side of the evaporator (8) through a pipe; a heater (11) is provided on the pipe between the outlet of the first water pump (10) and the first end of the first water storage tank (16); the water system side of the condenser (7) is the normally hot end, and the water system side of the evaporator (8) is the normally cold end. Adjusting the opening and closing of the four-way valve (6) realizes the function swap of the condenser (7) and the evaporator (8).

2. The multi-power supply auxiliary heating temperature control system according to claim 1, characterized in that, The outlet of the compressor (1) is connected to the first port of the four-way valve (6) through a pipe. The second port of the four-way valve (6) is connected to the first end of the refrigerant side of the evaporator (8) through a pipe. The second end of the refrigerant side of the evaporator (8) is connected to the first end of the expansion valve (5) through a pipe. The second end of the expansion valve (5) is connected to the second end of the refrigerant side of the condenser (7) through a pipe. The first end of the refrigerant side of the condenser (7) is connected to the third port of the four-way valve (6) through a pipe. The fourth port of the four-way valve (6) is connected to the inlet of the compressor (1) through a pipe.

3. The multi-power supply auxiliary heating temperature control system according to claim 2, characterized in that, A filter (4) and a temperature switch (3) are installed on the pipeline between the fourth port of the four-way valve (6) and the inlet of the compressor (1).

4. The multi-power supply auxiliary heating temperature control system according to claim 2, characterized in that, A liquid storage tank (2) is installed on the pipeline between the outlet of the compressor (1) and the first port of the four-way valve (6).

5. The multi-power supply auxiliary heating temperature control system according to claim 1, characterized in that, A first bypass is provided on the pipe between the heater (11) and the first end of the first water storage tank (16). A first switch valve (20) and a heat sink (13) are sequentially provided on the first bypass. The heat sink (13) is connected to the second end of the first water storage tank (16) and the second end of the water system side of the condenser (7) through a pipe. A cooling device (12) is provided outside the heat sink (13).

6. The multi-power supply auxiliary heating temperature control system according to claim 1, characterized in that, A temperature sensor (9) is installed on the pipe between the first end of the water system side of the condenser (7) and the inlet of the first water pump (10); a temperature sensor (9) is installed on the pipe between the heater (11) and the first end of the first water storage tank (16); a temperature sensor (9) is installed on the pipe between the first end of the water system side of the evaporator (8) and the inlet of the second water pump (18).

7. The multi-power supply auxiliary heating temperature control system according to any one of claims 1-6, characterized in that, At least one second bypass is provided on the pipe between the heater (11) and the first end of the first water storage tank (16). A second switch valve (15) and a first load (14) are sequentially provided on the second bypass. The first load (14) is connected to the pipe between the second end of the first water storage tank (16) and the second end of the water system side of the condenser (7) through a pipe.

8. The multi-power supply auxiliary heating temperature control system according to claim 7, characterized in that, The first load (14) is a refrigeration device or a heating device.

9. The multi-power supply auxiliary heating temperature control system according to any one of claims 1-6, characterized in that, At least one third bypass is provided on the pipeline between the outlet of the second water pump (18) and the first end of the second water storage tank (19). A third switch valve (21) and a second load (17) are sequentially provided on the third bypass. The second load (17) is connected to the pipeline between the second end of the second water storage tank (19) and the second end of the water system side of the evaporator (8) through a pipeline.

10. The multi-power supply auxiliary heating temperature control system according to claim 9, characterized in that, The second load (17) is a refrigeration device or a heating device.

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