The utility model content
The utility model technical issues that need to address are at the existing above-mentioned deficiency of refrigeration plant in the prior art, a kind of combined type cooling/heating system that makes full use of the nature cold/heat source and can significantly reduce outdoor startup and shutdown of units number of times is provided, this combined type cooling/heating system is energy savings effectively, and use in the suitable especially place of cold/thermic load that needs for a long time.
The technical scheme that solution the utility model technical problem is adopted is that this combined type cooling/heating system comprises outdoor unit, indoor unit, described outdoor unit includes mechanical refrigeration/heating unit and natural cold/heat source collector unit, described indoor unit comprises indoor heat exchanger and the feed pipe and the return pipe that are communicated with it respectively, described mechanical refrigeration/heating unit is communicated with described feed pipe interface and return pipe interface respectively by pipeline, and form mechanical refrigeration/heat closed circuit by feed pipe and return pipe and described indoor heat exchanger, nature cold/heat source collector unit is communicated with described feed pipe interface and return pipe interface respectively by pipeline, and by feed pipe and return pipe and described indoor heat exchanger composition nature cold/heat source closed circuit, also include energy storage equipment, described energy storage equipment is connected on the pipeline between feed pipe and the indoor heat exchanger.
Preferably, can be connected with triple valve on the described feed pipe interface, the feed pipe interface is communicated with mechanical refrigeration/heating unit and natural cold/heat source collector unit respectively by the conversion of described triple valve.Like this, mechanical refrigeration/heating unit and natural cold/heat source collector unit just can be shared the indoor unit of a cover, thereby provide cost savings.
Further preferably, can be connected to two-way valve between feed pipe pipeline between described energy storage equipment and the indoor heat exchanger and the return pipe.Utilize the switching of this two-way valve, can be used for switching accumulation of energy and two kinds of duties of heat exchange of terminal energy storage equipment.
The work of the utility model cooling/heating system is divided into three kinds of operating modes, mechanical refrigeration/heating condition, and natural refrigerating/heating operating mode and energy storage equipment cold/heat discharges operating mode.In this system work process, preferentially select nature refrigerating/heating operating mode for use, next is that energy storage equipment cold/heat discharges operating mode, be mechanical refrigeration/heating condition at last, above-mentioned three kinds of operating modes are in full accord in the circulation waterway system of whole inside of base station, a shared circuits system realizes conversion between above-mentioned three kinds of different operating modes by described triple valve.
More preferably, this combined type cooling/heating system also includes the control module that this combined type cooling/heating system is controlled, described control module comprises controller, is arranged on indoor indoor temperature transmitter and is arranged on outdoor outdoor temperature sensor that described indoor temperature transmitter and outdoor temperature sensor are electrically connected with controller respectively; Described triple valve adopts electric T-shaped valve, and described two-way valve adopts two-way electronic valve, and described triple valve and described two-way valve are electrically connected with controller in the described control module respectively.Indoor temperature transmitter and outdoor temperature sensor send the Temperature numerical that it collected to controller respectively, controller carries out after the computing its control instruction being sent to described triple valve and two-way valve to the Temperature numerical that collects, to control its conversion and break-make.By the control of control module, this system can realize control fully automatically.
Mechanical refrigeration/heating unit can comprise compressor, condenser, the evaporimeter that interconnects, and described evaporimeter also is communicated with described feed pipe interface and return pipe interface.
Wherein, first heat exchanger is arranged in the described evaporimeter, described first heat exchanger is liquid-liquid heat-exchanger; Second heat exchanger is arranged in the described condenser, and described second heat exchanger is gas-liquid heat-exchanger; In the described natural cold/heat source collector unit the 3rd heat exchanger is arranged, described the 3rd heat exchanger is gas-liquid heat-exchanger, this heat exchanger can be organized liquid-liquid heat-exchanger with another and replace under the situation of conditions permit, during as conditions permit outdoor table cold heat exchanger is placed river or lake.
Preferably, described the 3rd heat exchanger and described second heat exchanger are set up in parallel, and wherein the 3rd heat exchanger is located at the position of more close natural cold/heat source, also is provided with blower fan in the place ahead of the 3rd heat exchanger and second heat exchanger.Blower fan can be described the 3rd heat exchanger or second heat exchanger provides forced heat-exchanging, accelerates the heat exchange of nature cold/heat source collector unit or mechanical refrigeration/heating unit, thereby has improved the operational efficiency of whole system.
On the preferred described return pipe interface water pump is installed,, improves the efficient of heat exchange to accelerate water circulating speed.
Described energy storage equipment adopts the phase-changing energy-storing device, and it comprises water tank and is placed on the interior a plurality of phase-changing energy-storing sheets of described water tank.
Described water tank inside is provided with many row's supports, and each support is provided with a plurality of phase-changing energy-storing sheets, leaves suitable gap between every adjacent two phase transformation accumulation of energy sheets, also leaves suitable gap between the phase-changing energy-storing sheet on every adjacent two stands.The gap is set is mainly used in flowing of the interior water of water tank to realize heat exchange.
Described phase-changing energy-storing sheet adopts dismountable mode to be arranged on the described support, can select the phase-changing energy-storing sheet of different transformation temperatures like this according to the different temperatures needs for use.
When natural cold/heat source was abundant, the utility model combined type cooling/heating system can maximally utilise the nature cold/heat source, thereby reached the purpose of energy savings.The energy storage equipment that is increased makes no matter to be under the operating mode of natural refrigerating/heating or mechanical refrigeration/heat, the cold/heat of having more than needed can be stored in the energy storage equipment, thereby has further improved the utilization rate of natural cooling source.Simultaneously, by the energy storage equipment storage power, and in due course that energy storage equipment is stored energy discharges, and both saved the energy, can reduce the running time and the start-stop number of times of outdoor unit again, avoided unnecessary operation power consumption.
The specific embodiment
Below in conjunction with drawings and Examples the utility model is described in further detail.
Following examples are non-limiting embodiment of the present utility model.
Embodiment 1:
As shown in Figure 1, 2, in the present embodiment, the combined type cooling/heating system comprises the outdoor unit that is installed on the open air, the control module that is installed on indoor indoor unit and whole combined type cooling/heating system is controlled.Described outdoor unit includes mechanical refrigeration/heating unit and natural cold/heat source collector unit 2, and described indoor unit comprises indoor heat exchanger 11 and the feed pipe and the return pipe that are communicated with respectively with indoor heat exchanger 11.
Mechanical refrigeration/heating unit is communicated with feed pipe interface 9 and return pipe interface 10 respectively by pipeline, and forms mechanical refrigerations/heat closed circuit by feed pipe and return pipe and described indoor heat exchanger 11; Nature cold/heat source collector unit 2 also is communicated with feed pipe interface 9 and return pipe interface 10 respectively by pipeline, and by feed pipe and return pipe and indoor heat exchanger 11 composition nature cold/heat source closed circuits.
In the present embodiment, be connected with triple valve 7 on the feed pipe interface 9, for the indoor unit of the shared cover of energy, mechanical refrigeration/heating unit and natural cold/heat source collector unit 2 can not be communicated with indoor unit simultaneously, therefore a triple valve 7 is set on feed pipe interface 9, makes mechanical refrigeration/heating unit and natural cold/heat source collector unit 2 be communicated with feed pipe interface 9 respectively by the conversion of triple valve 7.
As shown in Figure 3, in the present embodiment, triple valve 7 adopts L type electric T-shaped valve (as adopting Okonoff-DQ320), and this triple valve 7 has two kinds of mode of communicating, and a kind of is that A-B is communicated with, and a kind of is that B-C is communicated with.
Described mechanical refrigeration/heating unit comprises compressor 4, condenser 3 and the evaporimeter 5 that interconnects, and described evaporimeter 5 also is communicated with described feed pipe interface 9 and return pipe interface 10.
Wherein, first heat exchanger is arranged in the evaporimeter 5, first heat exchanger is liquid-liquid heat-exchanger; Second heat exchanger is arranged in the condenser 3, and second heat exchanger is gas-liquid heat-exchanger; In the nature cold/heat source collector unit 2 the 3rd heat exchanger is arranged, the 3rd heat exchanger 2 is gas-liquid heat-exchanger.In the present embodiment, the 3rd heat exchanger adopts copper tube with fins formula heat exchanger.
Described the 3rd heat exchanger and described second heat exchanger are set up in parallel, and the 3rd heat exchanger is located at the outer fix of more close natural cold/heat source, also are provided with blower fan 1 in the dead ahead of the 3rd heat exchanger and second heat exchanger.Blower fan 1 rotates the heat exchange that can accelerate nature cold/heat source collector unit 2 or mechanical refrigeration/heating unit, thereby improves the operational efficiency of whole system.
On return pipe interface 10, water pump is installed.
The output of nature cold/heat source collector unit 2 is communicated with feed pipe interface 9 by the A-B connected entrance of triple valve 7, and its input links to each other with return pipe interface 10 by water pump 8.The output of evaporimeter 5 is communicated with feed pipe interface 9 by the B-C connected entrance of triple valve 7 in mechanical refrigeration/heating unit, and the input of evaporimeter 5 links to each other with return pipe interface 10 by water pump 8.
Also have energy storage equipment 13 on the pipeline between feed pipe and the indoor heat exchanger 11, energy storage equipment 13 is arranged on indoor.In the present embodiment, energy storage equipment adopts the phase-changing energy-storing device.
Be connected to two-way valve 12 between feed pipe pipeline between described energy storage equipment and the indoor heat exchanger 11 and the return pipe.In the present embodiment, two-way valve adopts two-way electronic valve.
Shown in Fig. 4,5, described phase-changing energy-storing device comprises water tank 14 and a plurality of phase-changing energy-storing sheets 16 that are placed in the water tank 14.Be provided with many row's supports 15 in the water tank 14.Each support is provided with a plurality of phase-changing energy-storing sheets 16, leaves suitable gap between every adjacent two phase-changing energy-storing sheets.Also leave suitable gap between the phase-changing energy-storing sheet on every adjacent two stands.Like this owing to vertically, laterally all leave spacing between the adjacent phase-changing energy-storing sheet, so recirculated water can from described vertically, pass through the horizontal spacing.
Phase-changing energy-storing sheet 16 adopts dismountable mode to be arranged on the support 15, can choose the phase-changing energy-storing sheet of different transformation temperatures according to the different temperatures needs.Phase-changing energy-storing sheet 16 is a hollow-core construction, stores specific phase-change material in it, is used to store cold or heat.The phase-changing energy-storing sheet that the phase-changing energy-storing sheet can select for use Australian company to produce.
Described control module comprises controller, is arranged on indoor indoor temperature transmitter and is arranged on outdoor outdoor temperature sensor.
Indoor temperature transmitter and outdoor temperature sensor are electrically connected with controller respectively, and triple valve 7 and two-way valve 12 also are electrically connected with controller respectively.Send the temperature data that is collected to controller respectively by outdoor temperature sensor and indoor temperature transmitter, send instruction after handling by controller again to triple valve 7 or two-way valve 12, by the conversion of controller control triple valve 7 and the break-make of two-way valve 12.
In the present embodiment, this combined type cooling/heating system is divided into three kinds of operating modes, promptly natural refrigerating/heating operating mode, mechanical refrigeration/heating condition, and energy storage equipment released cold quantity/heat operating mode in the work engineering.By controller the preferred order of three kinds of operating modes of this system is controlled, in system work process, preferentially select nature refrigerating/heating operating mode for use, next selects energy storage equipment released cold quantity/heat operating mode, select mechanical refrigeration/heating condition at last for use, these three kinds of operating modes utilize the pipeline conversion of triple valve and the break-make of two-way valve 12 to realize by controller.
Be that combined type cooling/heating system in the present embodiment carries out the course of work of cooling to the place that needs refrigeration duty the whole year below, it is 15 ℃~25 ℃ that its indoor temperature requires.
In the present embodiment, the outdoor temperature that the outdoor temperature sensor is collected is made as T
1, the indoor temperature that indoor temperature transmitter collected is made as T
2
Operational mode 100:
As outdoor temperature T
1Be lower than 18 ℃, indoor temperature T
2When being higher than 26 ℃, controller is judged and need be lowered the temperature to indoor.The controller instruction starts the natural cooling source cooling condition and freezes.As shown in Figure 6, the A-B channel connection of controller instruction triple valve 7, the mechanical refrigeration unit is out of service, and natural cooling source collector unit 2 is initiatively collected natural cold quantity, blower fan 1 operation, water pump 8 operations, two-way valve 12 disconnects.Natural cooling source collector unit 2 collected colds pass through the A-B passway of triple valve 7, are sent to indoor units by feed pipe interface 9 again, and indoor heat exchanger 11 carries out heat exchange to reach the purpose of cooling with the mode and the room air of convection current.At this moment, indoor refrigeration duty is provided by outside natural cooling source fully.Meanwhile, when the temperature of recirculated water in the return pipe is lower than the temperature of phase-changing energy-storing sheet 16 in the phase-changing energy-storing device, phase-changing energy-storing device 13 will store cold automatically.
Operational mode 200:
As indoor temperature T
2Less than 22 ℃, outdoor temperature T
1When being lower than 15 ℃, controller is judged indoor temperature T
2Satisfy this indoor temperature requirement, need not to lower the temperature indoor.The controller instruction continues to adopt the natural cooling source cooling condition.As shown in Figure 7, the A-B channel connection of triple valve 7, two-way valve 12 is connected, and indoor heat exchanger 11 is by bypass.This stage is that natural cooling source is that phase-changing energy-storing device 13 is concentrated the cold-storage stage.After treating that cold-storage finishes, blower fan 1 is out of service, and water pump 8 is out of service, and whole refrigeration system is out of service.
Operational mode 300:
As indoor temperature T
2When rising to more than 26 ℃ again, controller is judged and need be lowered the temperature to indoor.The controller instruction starts energy storage equipment released cold quantity operating mode and freezes.As shown in Figure 8, blower fan 1 does not start, the B-C channel connection of triple valve 7, two-way valve 12 disconnects, water pump 8 operation relies on cold stored in the operational mode 200 by phase-changing energy-storing device 13 and provides cold to indoor heat exchanger 11, indoor heat exchanger 11 again in the mode of convection current to room temperature lowering.This process is the operating mode of phase-changing energy-storing device 13 released cold quantities.Indoor temperature T
2Descend, and remain in 18 ℃ of-25 ℃ of scopes.
Operational mode 400:
As indoor temperature T
2Rise to once more more than 26 ℃ and this moment outdoor temperature T
1When being lower than 18 ℃, controller is judged and need be lowered the temperature to indoor.The controller instruction is restarted the natural cooling source cooling condition and is freezed.As shown in Figure 6, the A-B channel connection of triple valve 7, blower fan 1 restarts, water pump 8 operations, two-way valve 12 cuts out, and collects low-temperature receiver by natural cooling source collector unit 2, utilizes natural cooling source to the indoor cold that provides again, and refrigeration system is again by operational mode 100 operations.
Operational mode 500:
As indoor temperature T
2Rise to more than 26 ℃ once more and outdoor temperature T
1When being higher than 25 ℃, controller is judged and need be lowered the temperature to indoor.The controller instruction starts mechanical cooling condition and freezes.As shown in Figure 9, the B-C channel connection of triple valve 7, two-way valve 12 cuts out, compressor 4, condenser 3, evaporimeter 5 operations, blower fan 1 operation provides cold by the mechanical refrigeration unit, and the cold that is produced is passed through the B-C passway of triple valve 7, be sent to indoor units by feed pipe interface 9 again, carry out heat convection to reach the cooling purpose by indoor heat exchanger 11 and room air at last.Meanwhile, when the temperature of recirculated water in the return pipe is lower than the temperature of phase-changing energy-storing sheet 16 in the phase-changing energy-storing device, phase-changing energy-storing device 13 will store cold automatically.
Operational mode 600:
Under the effect of operational mode 500, as indoor temperature T
2When falling back to below 22 ℃, the controller judgement need not to lower the temperature to indoor.As shown in figure 10, two-way valve 12 is connected, and indoor heat exchanger 11 is by bypass, and the mechanical refrigeration unit continues operation, concentrates and carries out cold-storage for phase-changing energy-storing device 13.When phase-changing energy-storing device 13 cold-storages finished, compressor 4 was out of service, and water pump 8 is out of service, and whole refrigeration system is out of service.
As indoor temperature T
2When being raised to more than 26 ℃ again, the mode 3 00 that reruns, by phase-changing energy-storing device 13 released cold quantities with the refrigeration.
Refrigeration system in the foregoing description both can be used in area cold in winter and hot in summer, also can further strengthen energy-conservation effect at cool area consideration day and night temperature of cold summer in winter and electricity price between peak and valley.In addition, also can select for use different energy storage materials of phase change and control mode to satisfy different demands, such as the place that needs thermic load is heated throughout the year.
Embodiment 2:
The difference of present embodiment and embodiment 1 is, does not include control module in this combined type cooling/heating system.The conversion of three kinds of refrigerating/heating patterns described in the embodiment 1 is to finish by the break-make of crossover tee valve manually 7 and control two-way valve 12.
Be understandable that above embodiment only is the illustrative embodiments that adopts for principle of the present utility model is described, yet the utility model is not limited thereto.For those skilled in the art; under the situation that does not break away from spirit of the present utility model and essence; can make various modification and improvement (as at the particular design machine set system of the occasion that needs heat supply all the year round etc.), these modification and improve and also be considered as protection domain of the present utility model.