Energy storage air conditioner and control method thereof

Abstract

The present invention provides an energy storage air conditioner and a control method thereof. The energy storage air conditioner includes a condenser, a liquid storage device, a heat exchanger, a pressure regulating device, a flow detection component and a controller. The liquid storage device is provided with a containing chamber. The pressure regulating device is arranged on the liquid storage device and is used to adjust the pressure in the containing chamber. The flow detection component is used to detect the flow of the second liquid inlet. The present application provides power for the refrigeration cycle through a pressure regulating device and eliminates the compressor, which not only solves the problem that the compressor is prone to failure in an ultra-low temperature environment, but also has lower costs, does not generate a large amount of energy consumption without a compressor, and is simpler and more energy-saving. In addition, the flow detection component can monitor the flow of the liquid refrigerant entering the heat exchanger in real time and feed it back to the controller, so that the controller can control the flow of the liquid refrigerant through the pressure regulating device to always be within the target flow range, ensuring that the energy storage air conditioner can meet the heat dissipation requirements of the energy storage equipment while being able to continue to operate stably, thereby improving the reliability of the energy storage air conditioner.

Description

Technical Field

[0001] The present invention relates to the technical field of energy storage, and in particular to an energy storage air conditioner and a control method thereof. Background Art

[0002] As a basic industry of the national economy, electricity has an irreplaceable position in social development. With the development of my country's economy, power construction has achieved great success. However, in some areas, there are still peak electricity consumption during specific time periods. During peak electricity consumption, power outages are still needed to ensure normal development. In order to balance electricity consumption and shift peaks to fill valleys, a large number of energy storage devices have come into being.

[0003] Severe heating is a major pain point of energy storage equipment, so corresponding air conditioners are needed to cool down the energy storage equipment. Such air conditioners are called energy storage air conditioners. The environment in which energy storage air conditioners in the prior art are used is mostly harsh. In many places, the temperature is very low all year round, and can reach more than minus 40 degrees in winter. The ultra-low temperature environment will cause the compressor to malfunction easily, reducing the reliability of the energy storage air conditioner. Summary of the invention

[0004] Based on this, it is necessary to provide an energy storage air conditioner and a control method thereof to address the problem of low reliability of the energy storage air conditioner in the prior art.

[0005] The technical solution is as follows:

[0006] On the one hand, an energy storage air conditioner is provided, comprising:

[0007] A condenser, provided with an air inlet and a first liquid outlet;

[0008] A liquid reservoir, comprising a containing cavity, and a first liquid inlet and a second liquid outlet both connected to the containing cavity, wherein the first liquid outlet is connected to the first liquid inlet;

[0009] a heat exchanger having a second liquid inlet connected to the second liquid outlet and an air outlet connected to the air inlet;

[0010] A pressure regulating device, disposed on the liquid reservoir and used to regulate the pressure in the containing chamber;

[0011] A flow detection member, used for detecting the flow of the second liquid inlet;

[0012] The controller is communicatively connected with the pressure regulating device and the flow detection element.

[0013] The technical solution is further described below:

[0014] In one embodiment, the pressure regulating device includes a driving assembly and a sealing member movably installed in the accommodating chamber, the sealing member is sealingly matched with the inner wall of the accommodating chamber and separates the accommodating chamber into a liquid storage chamber and a pressure regulating chamber, the driving assembly is communicatively connected to the controller and is transmission-connected to the sealing member to regulate the pressure in the liquid storage chamber.

[0015] In one embodiment, the first liquid inlet is connected to the pressure regulating chamber, the second liquid outlet is connected to the liquid storage chamber, the sealing member is provided with a connecting port for connecting the pressure regulating chamber and the liquid storage chamber, the pressure regulating device further comprises a control member communicatively connected to the controller, the control member is installed at the connecting port, and is used to control the opening or closing of the connecting port.

[0016] In one of the embodiments, the pressure regulating chamber is located above the liquid storage chamber, and the driving assembly is installed on the top of the liquid storage chamber and extends into the pressure regulating chamber to be transmission-connected with the sealing element.

[0017] In one embodiment, the energy storage air conditioner also includes a fan and a liquid level detection component both of which are communicatively connected to the controller, the fan is used to dissipate heat from the condenser, and the liquid level detection component is installed on the liquid reservoir and is used to detect the liquid level height in the liquid storage chamber.

[0018] In one embodiment, the liquid level detection component includes a first liquid level detection component and a second liquid level detection component, both of which are communicatively connected to the controller, and the first liquid level detection component and the second liquid level detection component are both installed on the liquid reservoir, the first liquid level detection component is configured to be triggered when the liquid level height in the liquid storage chamber rises to a first liquid level height, and the second liquid level detection component is configured to be triggered when the liquid level height in the liquid storage chamber drops to a second liquid level height, and the first liquid level height is greater than the second liquid level height.

[0019] In one embodiment, the liquid reservoir and the heat exchanger are both located below the condenser.

[0020] In one embodiment, the heat exchanger is located below the liquid reservoir.

[0021] On the other hand, a control method is provided, which is applied to the energy storage air conditioner, comprising:

[0022] S100, the pressure regulating device increases the pressure in the accommodating chamber, so that the refrigerant in the accommodating chamber enters the heat exchanger and circulates between the heat exchanger, the condenser and the liquid storage device;

[0023] S200, monitoring the real-time flow rate Q at the second liquid inlet 实 , and the real-time traffic Q实 and target flow range Q 目 For comparison, Q1≥Q 目 ≥Q2, Q1 is the target flow range Q 目 The maximum value of Q2 is the target flow range Q 目 The minimum value of Q 实 When Q1 is less than Q2, the pressure regulating device increases the pressure in the containing chamber so that Q1≥Q 实 ≥Q2; when Q1≥Q 实 ≥Q2, the voltage regulating device does not work; when Q 实 >Q1, the pressure regulating device adjusts the pressure in the containing chamber to reduce so that Q1≥Q 实 ≥Q2.

[0024] In one embodiment, in step S200, the pressure regulating device (400) comprises a driving component (411), and a sealing member (412) movably mounted in the accommodating chamber (210) and drivingly connected to the driving component (411), wherein the sealing member (412) separates the accommodating chamber (210) into a liquid storage chamber (211) and a pressure regulating chamber (212), and comprises:

[0025] S210, monitoring the real-time flow rate Q at the second liquid inlet 实 , and the real-time traffic Q 实 and target flow range Q 目 For comparison, Q1≥Q 目 ≥Q2;

[0026] S220, when Q 实 When Q1 is less than Q2, the driving assembly drives the seal to move toward the second liquid outlet, so that the pressure in the liquid storage chamber increases until Q1≥Q 实 ≥Q2;

[0027] S230, when Q1≥Q 实 When ≥Q2, the drive component does not act;

[0028] S240, when Q 实 >Q1, the driving assembly drives the sealing member to move in a direction away from the second liquid outlet, so that the pressure in the liquid storage chamber decreases until Q1≥Q 实 ≥Q2.

[0029] In one embodiment, after step S100, the method further includes:

[0030] S300, monitor the liquid level height in the liquid storage chamber. When the liquid level height in the liquid storage chamber rises to a first liquid level height, the first liquid level detection component is triggered and a first trigger signal is fed back to the controller. The controller controls the speed of the fan to decrease according to the first trigger signal. When the liquid level height in the liquid storage chamber is between the first liquid level height and the second liquid level height, the controller controls the fan to maintain a preset speed. When the liquid level height in the liquid storage chamber drops to the second liquid level height, the second liquid level detection component is triggered and a second trigger signal is fed back to the controller. The controller controls the speed of the fan to increase according to the second trigger signal until the liquid level height in the liquid storage chamber rises to the first liquid level height, and then the speed of the fan is restored to the preset speed.

[0031] In one embodiment, in step S300, it includes:

[0032] S310, monitoring the liquid level in the liquid storage chamber;

[0033] S320, when the liquid level in the liquid storage chamber rises to a first liquid level, the first liquid level detection element is triggered, and a first trigger signal is fed back to the controller, and the controller controls the speed of the fan to decrease according to the first trigger signal;

[0034] S330, when the liquid level in the liquid storage chamber is between the first liquid level and the second liquid level, the controller controls the fan to maintain a preset speed;

[0035] S340. When the liquid level in the liquid storage chamber drops to the second liquid level, the second liquid level detection component is triggered and feeds back a second trigger signal to the controller. The controller controls the drive assembly to drive the seal to move in a direction away from the second liquid outlet according to the second trigger signal. The control component controls the connecting port on the seal to open, and the refrigerant in the pressure regulating chamber flows into the liquid storage chamber through the connecting port. The speed of the fan increases until the liquid level in the liquid storage chamber rises to the first liquid level. The control component controls the connecting port to close, and the speed of the fan is restored to the preset speed.

[0036] Compared with the energy storage air conditioner in the prior art, the energy storage air conditioner and its control method in the present application have at least the following advantages: the pressure regulating device is used to provide power for the refrigeration cycle, and the compressor is eliminated, which not only solves the problem that the compressor is prone to failure in ultra-low temperature environments, but also has lower costs, no compressor generates a large amount of energy consumption, and is simpler and more energy-saving. In addition, the flow detection component can monitor the flow of the liquid refrigerant entering the heat exchanger in real time and feed it back to the controller, so that the controller can control the flow of the liquid refrigerant through the pressure regulating device to always be within the target flow range, ensuring that the energy storage air conditioner can meet the heat dissipation requirements of the energy storage equipment while also being able to continue to operate stably, thereby improving the reliability of the energy storage air conditioner. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] The drawings constituting a part of the present application are used to provide a further understanding of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application.

[0038] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0039] FIG1 is a schematic diagram of an energy storage air conditioner according to an embodiment.

[0040] FIG. 2 is a schematic structural diagram of the liquid storage device and the pressure regulating device in FIG. 1 .

[0041] FIG. 3 is a schematic structural diagram of the energy storage air conditioner of FIG. 1 .

[0042] FIG4 is a schematic diagram of the structure of the energy storage air conditioner in FIG3 after the fan and the controller are hidden.

[0043] FIG5 is a flow chart of a control method for an energy storage air conditioner according to an embodiment.

[0044] FIG. 6 is a flow chart of a control method for an energy storage air conditioner according to another embodiment.

[0045] Description of reference numerals:

[0046] 10. Energy storage air conditioner; 100. Condenser; 111. Air inlet; 112. First liquid outlet; 200. Liquid storage device; 210. Accommodating chamber; 211. Liquid storage chamber; 212. Pressure regulating chamber; 221. First liquid inlet; 222. Second liquid outlet; 300. Heat exchanger; 311. Second liquid inlet; 312. Air outlet; 400. Pressure regulating device; 411. Driving assembly; 412. Sealing element; 500. Flow detection element; 600. Controller; 700. Fan; 800. Liquid level detection assembly; 811. First liquid level detection element; 812. Second liquid level detection element; 900. Filter; 1000. Frame. DETAILED DESCRIPTION

[0047] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present application, so the present application is not limited by the specific embodiments disclosed below.

[0048] As shown in FIG. 1 , FIG. 2 and FIG. 3 , in one embodiment, an energy storage air conditioner 10 is provided, comprising a condenser 100, a liquid reservoir 200, a heat exchanger 300, a pressure regulating device 400, a flow detection member 500 and a controller 600. Among them, the condenser 100 is provided with an air inlet 111 and a first liquid outlet 112. The liquid reservoir 200 is provided with a accommodating chamber 210, and a first liquid inlet 221 and a second liquid outlet 222 both communicated with the accommodating chamber 210, and the first liquid outlet 112 is communicated with the first liquid inlet 221. The heat exchanger 300 is provided with a second liquid inlet 311 communicated with the second liquid outlet 222, and an air outlet 312 communicated with the air inlet 111. The pressure regulating device 400 is provided on the liquid reservoir 200 and is used to adjust the pressure in the accommodating chamber 210. The flow detection member 500 is used to detect the flow of the second liquid inlet 311. The controller 600 is in communication connection with the pressure regulating device 400 and the flow detection element 500 .

[0049] When the energy storage air conditioner 10 in the above embodiment is used, the pressure regulating device 400 operates to increase the pressure in the receiving chamber 210, so that the liquid refrigerant in the receiving chamber 210 enters the heat exchanger 300, and the liquid refrigerant evaporates into gaseous refrigerant in the heat exchanger 300. The gaseous refrigerant floats into the condenser 100, and the gaseous refrigerant condenses into liquid refrigerant in the condenser 100 and flows back into the receiving chamber 210, forming a refrigeration cycle. During the circulation of the refrigerant, the flow detection element 500 monitors the real-time flow Q at the second liquid inlet 311 in real time. 实 , and fed back to the controller 600, the controller 600 will convert the real-time flow Q实 and target flow range Q 目 For comparison; when Q 实 When Q1 is less than Q2, the pressure regulating device 400 increases the pressure in the accommodating chamber 210 so that Q1≥Q 实 ≥Q2; when Q1≥Q 实 ≥Q2, the voltage regulating device 400 does not operate; when Q 实 >Q2, the pressure regulating device 400 adjusts the pressure in the accommodating chamber 210 to reduce so that Q1≥Q 实 ≥Q2, ensuring that the liquid refrigerant can flow into the heat exchanger 300 at a target flow rate for evaporative cooling, thereby ensuring that the cooling capacity of the energy storage air conditioner 10 meets the heat dissipation requirements of the energy storage device. Compared with the energy storage air conditioner in the prior art, the present application uses a pressure regulating device 400 to provide power for the refrigeration cycle and eliminates the compressor, which not only solves the problem of the compressor being prone to failure in ultra-low temperature environments, but also has lower costs, no compressor to generate a large amount of energy consumption, and is simpler and more energy-saving. In addition, the flow detection component 500 can monitor the flow of the liquid refrigerant entering the heat exchanger 300 in real time and feed it back to the controller 600, so that the controller 600 can control the flow of the liquid refrigerant through the pressure regulating device 400 to always be within the target flow range, ensuring that the energy storage air conditioner 10 can meet the heat dissipation requirements of the energy storage device while also being able to continue to operate stably, thereby improving the reliability of the energy storage air conditioner 10.

[0050] It should be noted that the value of the target flow range can be flexibly adjusted according to actual needs.

[0051] Specifically in this embodiment, the condenser 100 can be set as a finned heat exchanger. The liquid reservoir 200 can be set as a liquid storage tank. The heat exchanger 300 can be set as a plate heat exchanger. The flow detection element 500 can be set as a flow meter, a flow sensor or other flow detection structure. The controller 600 can be set as a single-chip microcomputer, a programmable logic controller, or other control structure. The controller 600 can be connected to the pressure regulating device 400 and the flow detection element 500 through a data line, a wire, Bluetooth, a wireless network communication technology or other communication methods. The condenser 100, the liquid reservoir 200 and the heat exchanger 300 can be connected to each other through pipelines. Specifically, the second liquid outlet 222 is connected to the second liquid inlet 311 through a first pipeline. The air outlet 312 is connected to the air inlet 111 through a second pipeline. The flow detection element 500 is arranged on the first pipeline. Pressure sensors and temperature sensing packages are arranged on the first pipeline and the second pipeline. In other embodiments, the energy storage air conditioner 10 further includes a filter 900 installed on the first pipeline. Along the flow direction of the refrigerant, the filter 900 is located between the second liquid outlet 222 and the flow detection element 500.

[0052] As shown in FIG2 , the pressure regulating device 400 further includes a driving assembly 411 and a sealing member 412 movably mounted in the accommodating chamber 210. The sealing member 412 seals and cooperates with the inner wall of the accommodating chamber 210, and divides the accommodating chamber 210 into a liquid storage chamber 211 and a pressure regulating chamber 212. The driving assembly 411 is connected to the controller 600 for communication, and is connected to the sealing member 412 for transmission, so as to regulate the pressure in the liquid storage chamber 211. In this way, when Q 实 When Q2 is less than Q2, the driving assembly 411 drives the sealing member 412 to move toward the second liquid outlet 222, so that the volume of the pressure regulating chamber 212 increases, the volume of the liquid storage chamber 211 decreases, and the pressure in the liquid storage chamber 211 increases accordingly, thereby increasing the flow rate of the liquid refrigerant entering the heat exchanger 300; when Q 实 >Q1, the driving component 411 drives the seal 412 to move in the direction away from the second liquid outlet 222, so that the volume of the pressure regulating chamber 212 is reduced, the volume of the liquid storage chamber 211 is increased, and the pressure in the liquid storage chamber 211 is correspondingly reduced, thereby reducing the flow rate of the liquid refrigerant entering the heat exchanger 300. The structure is simple and reliable, and the reliability of the energy storage air conditioner 10 is improved.

[0053] The driving assembly 411 may be configured as a telescopic motor, a telescopic pump or other driving structures capable of realizing linear drive. The sealing member 412 may be configured as a sealing piston, a sealing disk, or other sealing structures. In other embodiments, the pressure regulating device 400 may also adjust the pressure in the accommodating chamber 210 by squeezing the liquid reservoir 200, or by filling the accommodating chamber 210.

[0054] As shown in FIG2 , optionally, the first liquid inlet 221 is connected to the pressure regulating chamber 212, the second liquid outlet 222 is connected to the liquid storage chamber 211, the sealing member 412 is provided with a connecting port (not shown) for connecting the pressure regulating chamber 212 and the liquid storage chamber 211, and the pressure regulating device 400 further includes a control member (not shown), which is installed at the connecting port and is used to control the opening or closing of the connecting port. In this way, during the process of increasing the pressure in the liquid storage chamber 211, the pressure regulating chamber 212 is separated from the liquid storage chamber 211, and the pressure in the pressure regulating chamber 212 is correspondingly reduced, ensuring that the liquid refrigerant in the liquid storage chamber 211 will not flow back into the condenser 100, and the liquid refrigerant in the condenser 100 can flow smoothly into the pressure regulating chamber 212, thereby improving the reliability of the energy storage air conditioner 10. When the liquid refrigerant in the liquid storage chamber 211 is insufficient, the controller 600 controls the control component to open the connecting port so that the liquid refrigerant in the pressure regulating chamber 212 flows into the liquid storage chamber 211 for replenishment, thereby ensuring that the liquid storage chamber 211 can continuously provide liquid refrigerant to the heat exchanger 300 .

[0055] The control element can be configured as any structure in the prior art that can control the opening or closing of the communication port. Specifically in this embodiment, the control element can be configured as a solenoid valve.

[0056] In other embodiments, the first liquid inlet 221 and the second liquid outlet 222 may also be connected to the liquid storage chamber 211. The first liquid outlet 112 and the first liquid inlet 221 are connected through a third pipeline. A one-way valve is provided on the third pipeline, and the one-way valve is used to prevent the liquid refrigerant in the liquid storage chamber 211 from flowing back to the condenser 100.

[0057] As shown in FIG. 2 , optionally, the pressure regulating chamber 212 is located above the liquid storage chamber 211, and the driving assembly 411 is installed on the top of the liquid storage device 200 and extends into the pressure regulating chamber 212 to be transmission-connected with the sealing member 412. In this way, when the connecting port is opened, the liquid refrigerant in the pressure regulating chamber 212 can flow into the liquid storage chamber 211 quickly, stably and reliably under the action of gas pressure for replenishment, thereby improving the reliability of the energy storage air conditioner 10.

[0058] Specifically in this embodiment, when Q 实 When Q<Q2, the driving assembly 411 drives the seal 412 to move downward, and the seal 412 is pressed downward, so that the pressure in the liquid storage chamber 211 increases, and the outflow speed of the liquid refrigerant in the liquid storage chamber 211 also increases, thereby increasing the flow rate of the liquid refrigerant entering the heat exchanger 300; when Q 实 >Q1, the driving component 411 drives the seal 412 to move upward, and the seal 412 is lifted, so that the pressure in the liquid storage chamber 211 is reduced, and the outflow speed of the liquid refrigerant in the liquid storage chamber 211 is also reduced, thereby reducing the flow rate of the liquid refrigerant entering the heat exchanger 300. The structure is simple and reliable, and the reliability of the energy storage air conditioner 10 is improved.

[0059] As shown in Fig. 1, Fig. 2 and Fig. 3, in one embodiment, the energy storage air conditioner 10 further includes a fan 700 and a liquid level detection assembly 800, both of which are in communication connection with the controller 600. The fan 700 is used to dissipate heat from the condenser 100, and the liquid level detection assembly 800 is installed on the liquid storage 200 and is used to detect the liquid level height in the liquid storage chamber 211. In this way, the controller 600 can adjust the rotation of the fan 700 according to the remaining amount of liquid refrigerant in the liquid storage chamber 211, and while ensuring that there is sufficient liquid refrigerant in the liquid storage chamber 211, the fan 700 can operate at a lower power to achieve energy saving.

[0060] As shown in Figures 2 and 3, optionally, the liquid level detection component 800 includes a first liquid level detection component 811 and a second liquid level detection component 812, both of which are communicatively connected to the controller 600. The first liquid level detection component 811 and the second liquid level detection component 812 are both installed on the liquid reservoir 200. The first liquid level detection component 811 is configured to be triggered when the liquid level height in the liquid storage chamber 211 rises to a first liquid level height, and the second liquid level detection component 812 is configured to be triggered when the liquid level height in the liquid storage chamber 211 drops to a second liquid level height, and the first liquid level height is greater than the second liquid level height. In this way, when the liquid level in the liquid storage chamber 211 drops to the second liquid level, the second liquid level detection component 812 is triggered and the second trigger signal is fed back to the controller 600. The controller 600 controls the driving component 411 to drive the seal 412 to move in the direction away from the second liquid outlet 222 according to the second trigger signal. The control component controls the connecting port on the seal 412 to open, and the refrigerant in the pressure regulating chamber 212 flows into the liquid storage chamber 211 through the connecting port. The speed of the fan 700 increases until the liquid level in the liquid storage chamber 211 rises to the first liquid level. The control component controls the connecting port to close, and the speed of the fan 700 is restored to the preset speed.

[0061] The first liquid level detection member 811 and the second liquid level detection member 812 can be configured as any device in the prior art that can be used to detect the liquid level. Specifically in this embodiment, the first liquid level detection member 811 and the second liquid level detection member 812 are configured as liquid level sensors.

[0062] As shown in FIG. 1 and FIG. 4 , in one embodiment, the liquid accumulator 200 and the heat exchanger 300 are both located below the condenser 100. In this way, the liquid refrigerant in the condenser 100 can flow into the liquid accumulator 200 under the action of its own gravity, and the gas refrigerant in the heat exchanger 300 can float upward into the condenser 100, thereby reducing the energy consumption of the energy storage air conditioner 10, ensuring that the refrigerant can circulate stably and reliably in the energy storage air conditioner 10, and improving the reliability of the energy storage air conditioner 10.

[0063] As shown in FIG4 , the heat exchanger 300 is optionally located below the liquid storage tank 200. In this way, the liquid refrigerant in the liquid storage tank 200 can flow into the heat exchanger 300 under the combined action of pressure and its own gravity, thereby reducing the energy consumption of the energy storage air conditioner 10, ensuring that the refrigerant can circulate stably and reliably in the energy storage air conditioner 10, and improving the reliability of the energy storage air conditioner 10.

[0064] Specifically in this embodiment, the energy storage air conditioner 10 further includes a frame 1000, and the frame 1000 includes an upper layer, a middle layer, and a lower layer arranged in order from top to bottom. The condenser 100 is installed on the upper layer. The liquid storage tank 200 is installed on the middle layer. The heat exchanger 300 is installed on the lower layer.

[0065] As shown in FIG5 , in one embodiment, a control method is provided, which is applied to an energy storage air conditioner 10 and includes at least the following steps:

[0066] S100, the pressure regulating device 400 increases the pressure in the accommodating chamber 210, so that the refrigerant in the accommodating chamber 210 enters the heat exchanger 300 and circulates between the heat exchanger 300, the condenser 100 and the liquid storage device 200. In this way, the pressure regulating device 400 provides power for the refrigeration cycle, and the compressor is eliminated, which not only solves the problem that the compressor is prone to failure in an ultra-low temperature environment, but also has lower costs, no compressor generates a large amount of energy consumption, and is simpler and more energy-saving.

[0067] As shown in FIG. 6 , optionally, S110 , the pressure regulating device 400 adjusts the pressure in the liquid storage chamber 211 to increase, so that the refrigerant in the liquid storage chamber 211 enters the heat exchanger 300 , and circulates between the heat exchanger 300 , the condenser 100 and the liquid storage chamber 200 .

[0068] Specifically in this embodiment, the driving component 411 drives the seal 412 to move downward to the first set position, so that the pressure in the liquid storage chamber 211 increases, and then the liquid refrigerant in the liquid storage chamber 211 enters the heat exchanger 300 and circulates between the heat exchanger 300, the condenser 100 and the liquid storage chamber 200.

[0069] S200, monitoring the real-time flow rate Q at the second liquid inlet 311 实 , and the real-time traffic Q 实 and target flow range Q 目 For comparison, Q1≥Q 目 ≥Q2, Q1 is the target flow range Q 目 The maximum value of Q2 is the target flow range Q 目 The minimum value of Q 实 When Q1 is less than Q2, the pressure regulating device 400 increases the pressure in the accommodating chamber 210 so that Q1≥Q 实 ≥Q2; when Q1≥Q 实 ≥Q2, the voltage regulating device 400 does not operate; when Q 实 >Q1, the pressure regulating device 400 adjusts the pressure in the accommodating chamber 210 to reduce so that Q1≥Q 实 ≥Q2. In this way, by real-time monitoring of the flow rate of the liquid refrigerant entering the heat exchanger 300 and feeding it back to the controller 600, the controller 600 can control the flow rate of the liquid refrigerant through the pressure regulating device 400 to always be within the target flow rate range, ensuring that the energy storage air conditioner 10 can meet the heat dissipation requirements of the energy storage equipment while also being able to continue to operate stably, thereby improving the reliability of the energy storage air conditioner 10.

[0070] As shown in FIG. 6 , specifically in this embodiment, S210, monitoring the real-time flow rate Q at the second liquid inlet 311 实 , and the real-time traffic Q 实 and target flow range Q 目 For comparison, Q1≥Q 目 ≥Q2.

[0071] S220, when Q 实 When Q1 is less than Q2, the driving assembly 411 drives the sealing member 412 to move toward the second liquid outlet 222, so that the pressure in the liquid storage chamber 211 increases until Q1≥Q 实 ≥Q2.

[0072] S230, when Q1≥Q 实 When ≥Q2, the driving component 411 does not operate.

[0073] S240, when Q 实 >Q1, the driving assembly 411 drives the sealing member 412 to move in a direction away from the second liquid outlet 222, so that the pressure in the liquid storage chamber 211 decreases until Q1≥Q 实 ≥Q2.

[0074] As shown in FIG6 , in one embodiment, after step S100, the following steps are further included:

[0075] S300, monitor the liquid level height in the liquid storage chamber 211. When the liquid level height in the liquid storage chamber 211 rises to a first liquid level height, the first liquid level detection component 811 is triggered, and the first trigger signal is fed back to the controller 600. The controller 600 controls the rotation speed of the fan 700 to decrease according to the first trigger signal; when the liquid level height in the liquid storage chamber 211 is between the first liquid level height and the second liquid level height, the controller 600 controls the fan 700 to maintain a preset rotation speed; when the liquid level height in the liquid storage chamber 211 drops to the second liquid level height, the second liquid level detection component 812 is triggered, and the second trigger signal is fed back to the controller 600. The controller 600 controls the rotation speed of the fan 700 to increase according to the second trigger signal until the liquid level height in the liquid storage chamber 211 rises to the first liquid level height, and the rotation speed of the fan 700 returns to the preset rotation speed. In this way, the controller 600 can adjust the rotation of the fan 700 according to the remaining liquid refrigerant in the liquid storage chamber 211, ensuring that there is enough liquid refrigerant in the liquid storage chamber 211 while the fan 700 can operate at a lower power to achieve energy saving.

[0076] Optionally, S310 , monitor the liquid level in the liquid storage chamber 211 .

[0077] S320, when the liquid level in the liquid storage chamber 211 rises to a first liquid level, the first liquid level detection element 811 is triggered, and a first trigger signal is fed back to the controller 600, and the controller 600 controls the speed of the fan 700 to decrease according to the first trigger signal.

[0078] S330: When the liquid level in the liquid storage chamber 211 is between the first liquid level and the second liquid level, the controller 600 controls the fan 700 to maintain a preset rotation speed.

[0079] S340. When the liquid level in the liquid storage chamber 211 drops to the second liquid level, the second liquid level detection component 812 is triggered and feeds back the second trigger signal to the controller 600. The controller 600 controls the driving component 411 to drive the seal 412 to move in the direction away from the second liquid outlet 222 according to the second trigger signal. The control component controls the connecting port on the seal 412 to open, and the refrigerant in the pressure regulating chamber 212 flows into the liquid storage chamber 211 through the connecting port. The speed of the fan 700 increases until the liquid level in the liquid storage chamber 211 rises to the first liquid level. The control component controls the connecting port to close, and the speed of the fan 700 returns to the preset speed.

[0080] It should be noted that the connecting port can be opened when the controller 600 controls the driving component 411 to drive the seal 412 to move in the direction away from the second liquid outlet 222 according to the second trigger signal, or it can be opened after the controller 600 controls the driving component 411 to drive the seal 412 to move in the direction away from the second liquid outlet 222 to the second set position according to the second trigger signal.

[0081] Compared with the energy storage air conditioner in the prior art, the control method for the energy storage air conditioner 10 in the present application has at least the following advantages: the pressure regulating device 400 provides power for the refrigeration cycle and eliminates the compressor, which not only solves the problem that the compressor is prone to failure in ultra-low temperature environments, but also has lower costs, no compressor generates a large amount of energy consumption, and is simpler and more energy-saving. In addition, the flow detection component 500 can monitor the flow of the liquid refrigerant entering the heat exchanger 300 in real time and feed it back to the controller 600, so that the controller 600 can control the flow of the liquid refrigerant through the pressure regulating device 400 to always be within the target flow range, ensuring that the energy storage air conditioner 10 can meet the heat dissipation requirements of the energy storage equipment while also being able to continue to operate stably, thereby improving the reliability of the energy storage air conditioner 10.

[0082] In the description of the present application, it should be understood that if the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. appear, the orientation or position relationship indicated by these terms is based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply 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 a limitation on the present application.

[0083] In addition, if the terms "first" or "second" appear, these terms are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of this application, if the term "plurality" appears, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0084] In this application, unless otherwise clearly specified and limited, if the terms "installed", "connected", "connected", "fixed" and the like appear, these terms should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0085] In the present application, unless otherwise clearly specified and limited, if there is a description that a first feature is "above" or "below" a second feature, etc., or similar descriptions appear, it may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "above" and "above" the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. The first feature being "below", "below" and "below" the second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0086] It should be noted that if an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. If an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. If any, the terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used in this application are for illustrative purposes only and do not represent the only implementation method.

[0087] It should also be understood that when explaining the connection relationship or positional relationship of elements, although not explicitly described, the connection relationship and positional relationship are interpreted as including an error range, which should be within the acceptable deviation range of a specific value determined by those skilled in the art. For example, "approximately", "approximately" or "substantially" may mean within one or more standard deviations, which are not limited here.

[0088] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0089] The above embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the patent application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent application shall be subject to the attached claims.

Claims

1. An energy storage air conditioner, characterized in that: include: The condenser (100) is provided with an air inlet (111) and a first liquid outlet (112); A liquid storage device (200) is provided with a containing cavity (210), and a first liquid inlet (221) and a second liquid outlet (222) both of which are in communication with the containing cavity (210), wherein the first liquid outlet (112) is in communication with the first liquid inlet (221); The heat exchanger (300) is provided with a second liquid inlet (311) in communication with the second liquid outlet (222), and an air outlet (312) in communication with the air inlet (111); A pressure regulating device (400), arranged on the liquid storage device (200) and used for regulating the pressure in the containing chamber (210); A flow detection component (500), used to detect the flow rate of the second liquid inlet (311); A controller (600) is communicatively connected to the pressure regulating device (400) and the flow detection element (500); The pressure regulating device (400) comprises a driving component (411) and a sealing member (412) movably mounted in the accommodating chamber (210); the sealing member (412) is in sealing cooperation with an inner wall of the accommodating chamber (210) and divides the accommodating chamber (210) into a liquid storage chamber (211) and a pressure regulating chamber (212); the driving component (411) is communicatively connected to the controller (600) and is drivingly connected to the sealing member (412) to regulate the pressure in the liquid storage chamber (211); The first liquid inlet (221) is in communication with the pressure regulating chamber (212), the second liquid outlet (222) is in communication with the liquid storage chamber (211), the sealing member (412) is provided with a communication port for connecting the pressure regulating chamber (212) and the liquid storage chamber (211), and the pressure regulating device (400) further comprises a control member which is in communication connection with the controller (600), the control member being mounted on the communication port and being used to control the opening or closing of the communication port.

2. The energy storage air conditioner according to claim 1, characterized in that: The pressure regulating chamber (212) is located above the liquid storage chamber (211), and the driving assembly (411) is installed on the top of the liquid storage device (200) and extends into the pressure regulating chamber (212) to be transmission-connected with the sealing element (412).

3. The energy storage air conditioner according to claim 1, characterized in that: The energy storage air conditioner (10) further comprises a fan (700) and a liquid level detection assembly (800) both of which are communicatively connected to the controller (600); the fan (700) is used to dissipate heat from the condenser (100); and the liquid level detection assembly (800) is installed on the liquid storage device (200) and is used to detect the liquid level height in the liquid storage chamber (211).

4. The energy storage air conditioner according to claim 3, characterized in that: The liquid level detection assembly (800) comprises a first liquid level detection component (811) and a second liquid level detection component (812), both of which are communicatively connected to the controller (600); the first liquid level detection component (811) and the second liquid level detection component (812) are both mounted on the liquid reservoir (200); the first liquid level detection component (811) is configured to be triggered when the liquid level in the liquid storage chamber (211) rises to a first liquid level; the second liquid level detection component (812) is configured to be triggered when the liquid level in the liquid storage chamber (211) drops to a second liquid level; the first liquid level is greater than the second liquid level.

5. The energy storage air conditioner according to any one of claims 1 to 4, characterized in that: The liquid storage device (200) and the heat exchanger (300) are both located below the condenser (100).

6. The energy storage air conditioner according to claim 5, characterized in that: The heat exchanger (300) is located below the liquid storage tank (200).

7. A control method, applied to the energy storage air conditioner (10) according to any one of claims 1 to 6, characterized in that: include: S100, the pressure regulating device (400) regulates the pressure in the accommodating chamber (210) to increase, so that the refrigerant in the accommodating chamber (210) enters the heat exchanger (300) and circulates between the heat exchanger (300), the condenser (100) and the liquid storage device (200); S200, monitoring the real-time flow rate Q at the second liquid inlet (311) 实 , and the real-time traffic Q 实 and target flow range Q 目 For comparison, Q1≥Q 目 ≥Q2, Q1 is the target flow range Q 目 The maximum value of Q2 is the target flow range Q 目 The minimum value of Q 实 <Q2, the pressure regulating device (400) regulates the pressure in the accommodating chamber (210) to increase so that Q1≥Q 实 ≥Q2; when Q1≥Q 实 ≥Q2, the voltage regulating device (400) does not operate; when Q 实 >Q1, the pressure regulating device (400) regulates the pressure in the accommodating chamber (210) to decrease so that Q1 ≥ Q 实 ≥Q2.

8. The control method according to claim 7, characterized in that: The pressure regulating device (400) comprises a driving component (411), and a sealing member (412) movably mounted in the accommodating chamber (210) and drivingly connected to the driving component (411), wherein the sealing member (412) divides the accommodating chamber (210) into a liquid storage chamber (211) and a pressure regulating chamber (212). In step S200, the process comprises: S210, monitoring the real-time flow rate Q at the second liquid inlet (311) 实 , and the real-time traffic Q 实 and target flow range Q 目 For comparison, Q1≥Q 目 ≥Q2; S220, when Q 实 When Q1 is less than Q2, the driving component (411) drives the sealing element (412) to move in a direction close to the second liquid outlet (222), so that the pressure in the liquid storage chamber (211) increases until Q1≥Q 实 ≥Q2; S230, when Q1≥Q 实 When ≥Q2, the driving component (411) does not operate; S240, when Q 实 >Q1, the driving component (411) drives the sealing element (412) to move in a direction away from the second liquid outlet (222), so that the pressure in the liquid storage chamber (211) decreases until Q1 ≥ Q 实 ≥Q2.

9. The control method according to claim 8, characterized in that: After step S100, the method further includes: S300, monitoring the liquid level in the liquid storage chamber (211); when the liquid level in the liquid storage chamber (211) rises to a first liquid level, the first liquid level detection element (811) is triggered, and a first trigger signal is fed back to the controller (600); the controller (600) controls the rotation speed of the fan (700) to decrease according to the first trigger signal; when the liquid level in the liquid storage chamber (211) is between the first liquid level and the second liquid level, the controller (600) controls the fan (700) to maintain a preset rotation speed; when the liquid level in the liquid storage chamber (211) drops to the second liquid level, the second liquid level detection element (812) is triggered, and a second trigger signal is fed back to the controller (600); the controller (600) controls the rotation speed of the fan (700) to increase according to the second trigger signal, until the liquid level in the liquid storage chamber (211) rises to the first liquid level, and the rotation speed of the fan (700) is restored to the preset rotation speed.

10. The control method according to claim 9, characterized in that: In step S300, it includes: S310, monitoring the liquid level in the liquid storage chamber (211); S320, when the liquid level in the liquid storage chamber (211) rises to a first liquid level, the first liquid level detection element (811) is triggered, and a first trigger signal is fed back to the controller (600), and the controller (600) controls the speed of the fan (700) to decrease according to the first trigger signal; S330: when the liquid level in the liquid storage chamber (211) is between the first liquid level and the second liquid level, the controller (600) controls the fan (700) to maintain a preset rotation speed; S340. When the liquid level in the liquid storage chamber (211) drops to a second liquid level, the second liquid level detection component (812) is triggered and feeds back a second trigger signal to the controller (600). The controller (600) controls the drive assembly (411) to drive the sealing component (412) to move in a direction away from the second liquid outlet (222) according to the second trigger signal. The control component controls the connecting port on the sealing component (412) to open, and the refrigerant in the pressure regulating chamber (212) flows into the liquid storage chamber (211) through the connecting port. The rotation speed of the fan (700) increases until the liquid level in the liquid storage chamber (211) rises to the first liquid level. The control component controls the connecting port to close, and the rotation speed of the fan (700) is restored to a preset rotation speed.

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