Multi-stage heat recovery type special planting machine

Abstract

The utility model discloses a multi-stage heat recovery type special planting machine, which relates to the technical field of cultivation temperature control, and comprises a compressor, a first four-way valve and a second four-way valve, the first four-way valve comprises a D port, an E port, an S port and a C port, the second four-way valve comprises a D'port, an E 'port, an S' port and a C 'port, the C port is connected with the D' port, the S port is connected with the S 'port and is connected with a gas-liquid separator, the gas-liquid separator is connected with a compressor, the C' port is connected with a reheater, the reheater is provided with an inner fan in an opposite mode, the reheater is connected with a first one-way valve, the first one-way valve is connected with a liquid storage device, and the liquid storage device is connected with an electronic expansion valve. The electronic expansion valve is connected with a first electromagnetic valve, the first electromagnetic valve is connected with a second one-way valve, and the second one-way valve is connected with an evaporator which is connected with a port E. The utility model has the advantages of high efficiency, energy conservation, stable environment and flexible control.

Description

Technical Field

[0001] The utility model relates to the technical field of cultivation temperature control, in particular to a multi-stage heat recovery type special planting machine. Background Art

[0002] In modern agricultural technology, planting units have become the core equipment for greenhouse environmental control. Most of these units are designed around the core function of temperature regulation, while some units also incorporate humidity and carbon dioxide concentration regulation functions to meet the diverse environmental needs of crop growth. When adjusting environmental parameters, traditional planting units mostly rely on the cooling and heating functions achieved by compressors. Through the sensor network deployed in the greenhouse, the unit can monitor key data such as temperature, humidity and carbon dioxide concentration in the greenhouse in real time. Based on these data feedbacks, the unit uses preset control logic to decide whether to start the cooling or heating cycle, and when to adjust the air circulation, so as to maintain the stability of the internal environment of the greenhouse.

[0003] Most of these traditional units still use refrigeration and dehumidification combined with electric heating to achieve the dehumidification function. This method generates a large amount of condensation heat during the dehumidification process, and this heat is often directly discharged to the outside of the greenhouse, resulting in significant energy waste. In addition, in order to adjust the concentration of carbon dioxide, many units use the method of directly introducing fresh air to dilute the air in the greenhouse. Although this method can quickly reduce the concentration of carbon dioxide and provide fresh air, it also brings a lot of problems. Specifically, the rush of fresh air often directly impacts the temperature balance in the greenhouse, causing the temperature to fluctuate violently in a short period of time. This temperature fluctuation is extremely unfavorable to crop growth and may affect its photosynthesis, respiration and other physiological processes, thereby affecting the yield and quality of crops. At the same time, the introduction of a large amount of fresh air also means the loss of the original cold and hot air in the greenhouse, which not only breaks the temperature and humidity balance in the greenhouse, but also increases energy consumption.

[0004] Therefore, how to achieve efficient use of energy and effective management of carbon dioxide while ensuring the stability of the greenhouse environment has become one of the important challenges facing modern agricultural technology. Utility Model Content

[0005] In view of the defects in the prior art, the utility model provides a multi-stage heat recovery type special planting machine.

[0006] A multi-stage heat recovery type planting machine, comprising a compressor, a first four-way valve and a second four-way valve, wherein the first four-way valve comprises a D port, an E port, an S port and a C port, and the second four-way valve comprises a D' port, an E' port, an S' port and a C' port, wherein the compressor is connected to the D port, the C port is connected to the D' port, the S port is connected to the S' port and is connected to a gas-liquid separator, and the gas-liquid separator is connected to the compressor; wherein the C' port is connected to a reheater, an internal fan is arranged opposite to the reheater, the reheater is connected to a first one-way valve, the first one-way valve is connected to a liquid reservoir, the liquid reservoir is connected to an electronic expansion valve, the electronic expansion valve is connected to a first solenoid valve, and the first solenoid The valve is connected to a second one-way valve, the second one-way valve is connected to an evaporator, and the evaporator is connected to the E port; the E' port is connected to an outdoor condenser, the outdoor condenser is connected to a second solenoid valve, the second solenoid valve is connected to a third one-way valve, the third one-way valve is connected to a fourth one-way valve, and the fourth one-way valve is connected to the liquid reservoir; the electronic expansion valve is also connected to a fifth one-way valve, the fifth one-way valve is connected to a third solenoid valve, the third solenoid valve is connected to a sixth one-way valve, the third solenoid valve and the sixth one-way valve are connected in parallel with the second solenoid valve and the third one-way valve; a seventh one-way valve is connected between the second one-way valve and the evaporator, and the seventh one-way valve is connected to the liquid reservoir.

[0007] Preferably, the fifth one-way valve is also connected to the fourth one-way valve. This ensures that the refrigerant can directly return to the liquid reservoir through the fourth one-way valve under certain working conditions. Through the cooperation of the fifth one-way valve and the fourth one-way valve, the flow direction and flow rate of the refrigerant can be more accurately controlled to meet the needs of different working modes.

[0008] Preferably, an outdoor fan is provided on the outdoor condenser. The main function of the outdoor fan is to promote heat exchange between the outdoor condenser and the external environment and improve condensation efficiency. When the system is in cooling mode, the outdoor fan can accelerate the condensation process of the refrigerant in the outdoor condenser, thereby discharging heat to the outdoor environment more quickly.

[0009] Preferably, a first temperature sensor is provided on the outdoor condenser. The first temperature sensor is used to monitor the working temperature of the outdoor condenser in real time. Through this sensor, the system can obtain the temperature data of the outdoor condenser in real time, and adjust the parameters such as the speed of the outdoor fan and the flow rate of the refrigerant according to these data to ensure that the outdoor condenser always works in the best state.

[0010] Preferably, a second temperature sensor is provided outdoors. The second temperature sensor is mainly used to monitor the temperature of the outdoor environment. Through this sensor, the system can understand the change of the outdoor temperature in real time and adjust the working mode or parameters of the system as needed. For example, when the outdoor temperature is low, the system can automatically switch to the heating mode or adjust the operating parameters of the dehumidification mode to ensure that the temperature in the greenhouse is always kept within a range suitable for crop growth.

[0011] Preferably, a third temperature sensor is provided on the internal fan. The third temperature sensor is used to monitor the temperature in the greenhouse in real time. Through this sensor, the system can obtain the temperature data in the greenhouse in real time, and adjust the speed of the internal fan, the flow rate of the refrigerant and other parameters according to these data to ensure that the temperature in the greenhouse is always kept within the set range. At the same time, these data can also provide important basis for the intelligent control of the system, such as automatically adjusting environmental parameters such as light intensity and humidity according to changes in indoor temperature.

[0012] Preferably, a fourth temperature sensor is provided on the evaporator. The fourth temperature sensor is mainly used to monitor the operating temperature of the evaporator. Through this sensor, the system can understand the temperature change of the refrigerant in the evaporator in real time, and adjust the operating parameters of the evaporator or start the defrosting program as needed. For example, when the evaporator temperature is too low, the system can automatically reduce the flow rate of the refrigerant or increase the temperature setting value of the evaporator to prevent the evaporator from frosting or freezing and affecting the refrigeration effect.

[0013] The beneficial effects of the utility model are embodied in:

[0014] In the utility model, in the dehumidification mode, the utility model can recover the condensation heat that is usually discharged to the outside to the indoor room, which not only reduces the waste of energy, but also effectively improves the efficiency of temperature control in the greenhouse. Through the precise switching conversion of the system valve components, the efficient recovery and utilization of the condensation heat is realized, making the entire system more energy-saving and efficient in the dehumidification process; further, in the process of exhausting carbon dioxide, the utility model opens multiple solenoid valves and internal and external fans to allow fresh air and exhaust air to exchange heat. In this way, the fresh air is preheated before entering the greenhouse, reducing the impact on the temperature in the greenhouse caused by the introduction of cold air. At the same time, the heat in the exhaust air is also effectively recovered, further improving the energy utilization efficiency of the system; further, after the wind is discharged to the external unit, the heat it carries is not directly wasted. The utility model uses the discharged humid air for heat recovery again through the design of the outdoor condenser, which not only ensures the stability of the indoor working conditions, but also achieves the purpose of energy saving to the greatest extent. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the specific implementation of the utility model or the technical solution in the prior art, the following is a brief introduction to the drawings required for the specific implementation or the prior art description. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, each element or part is not necessarily drawn according to the actual scale.

[0016] Figure 1 It is a structural schematic diagram of the utility model.

[0017] Reference numerals:

[0018] 1- compressor, 2- gas-liquid separator, 3- first four-way valve, 31- D port, 32- E port, 33- S port, 34- C port, 4- second four-way valve, 41- D' port, 42- E' port, 43- S' port, 44- C' port, 5- reheater, 6- internal fan, 7- first check valve, 8- liquid storage tank, 9- electronic expansion valve, 10- first solenoid valve, 11- second check valve, 12- evaporator, 13- outdoor condenser, 131- outdoor fan, 14- second solenoid valve, 15- third check valve, 16- fourth check valve, 17- fifth check valve, 18- third solenoid valve, 19- sixth check valve, 20- seventh check valve, 21- first temperature sensor, 22- second temperature sensor, 23- third temperature sensor, 24- fourth temperature sensor. DETAILED DESCRIPTION

[0019] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. The components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0020] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the present invention to be protected, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0021] It should be noted that similar reference numerals and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further defined and explained in the subsequent drawings. In addition, the terms "first", "second", etc. are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0022] like Figure 1 As shown, a multi-stage heat recovery type planting machine includes a compressor 1, a first four-way valve 3 and a second four-way valve 4, the first four-way valve 3 includes a D port 31, an E port 32, an S port 33 and a C port 34, the second four-way valve 4 includes a D' port 41, an E' port 42, an S' port 43 and a C' port 44, the compressor 1 is connected to the D port 31, the C port 34 is connected to the D' port 41, the S port 33 is connected to the S' port 43 and is connected to a gas-liquid separator 2, and the gas-liquid separator 2 is connected to the compressor 1; wherein the C' port 44 is connected to a reheater 5, the reheater 5 is directly opposite to an internal fan 6, the reheater 5 is connected to a first one-way valve 7, the first one-way valve 7 is connected to a liquid reservoir 8, the liquid reservoir 8 is connected to an electronic expansion valve 9, the electronic expansion valve 9 is connected to a first solenoid valve 10, and the first solenoid valve 10 A second one-way valve 11 is connected, the second one-way valve 11 is connected to the evaporator 12, and the evaporator 12 is connected to the E port 32; the E' port 42 is connected to the outdoor condenser 13, the outdoor condenser 13 is connected to the second solenoid valve 14, the second solenoid valve 14 is connected to the third one-way valve 15, the third one-way valve 15 is connected to the fourth one-way valve 16, and the fourth one-way valve 16 is connected to the liquid reservoir 8; the electronic expansion valve 9 is also connected to the fifth one-way valve 17, the fifth one-way valve 17 is connected to the third solenoid valve 18, the third solenoid valve 18 is connected to the sixth one-way valve 19, and the third solenoid valve 18 and the sixth one-way valve 19 are connected in parallel with the second solenoid valve 14 and the third one-way valve 15; a seventh one-way valve 20 is connected between the second one-way valve 11 and the evaporator 12, and the seventh one-way valve 20 is connected to the liquid reservoir 8.

[0023] In this embodiment, it should be noted that in the entire multi-stage heat recovery type planting machine, the switching conditions of various solenoid valves, electronic expansion valves 9, internal fans 6 and other components are shown in the following table:

[0024]

[0025] For example, when the dehumidification and reheating mode is in progress, the refrigerant flows from the compressor 1 through the exhaust pipe, through the first four-way valve 3 and the second four-way valve 4, into the reheater 5 to condense and release heat. After passing through the liquid storage tank 8, it is throttled by the electronic expansion valve 9 and enters the evaporator 12 through the first solenoid valve 10 to cool and dehumidify. The internal fan 6 delivers air into the shed. The system first cools down and then heats up, thereby achieving the purpose of reducing the relative humidity of the air in the shed.

[0026] For another example, when in cooling mode, the refrigerant flows from the compressor 1 through the exhaust pipe, through the first four-way valve 3 and the second four-way valve 4, into the outdoor condenser 13, and then dissipates heat outdoors. After passing through the second solenoid valve 14, it enters the liquid storage tank 8, is throttled by the electronic expansion valve 9, and enters the evaporator 12 from the first solenoid valve 10 for cooling and cooling. The blower sends cold air into the shed, and the system cools the shed and achieves the purpose of cooling the shed.

[0027] For another example, when in heating mode, the refrigerant flows from the compressor 1 through the exhaust pipe, through the first four-way valve 3 and the second four-way valve 4, into the evaporator 12, and dissipates heat indoors. The indoor fan 6 sends the hot air into the shed. After the heat is dissipated, it passes through the liquid storage tank 8, and then is throttled by the electronic expansion valve 9, and enters the outdoor condenser 13 through the third solenoid valve 18. The outdoor fan 131 starts heat exchange, completing the whole cycle and achieving the purpose of indoor heating.

[0028] In summary, in the dehumidification mode, the utility model can recover the condensation heat that is usually discharged to the outdoors to the indoors, which not only reduces energy waste, but also effectively improves the efficiency of temperature control in the greenhouse. Through the precise switching conversion of the system valve components, the efficient recovery and utilization of the condensation heat is achieved, making the entire system more energy-efficient and efficient during the dehumidification process; further, in the process of exhausting carbon dioxide, the utility model opens multiple solenoid valves and internal and external fans to allow fresh air and exhaust air to exchange heat. In this way, the fresh air is preheated before entering the greenhouse, reducing the impact on the temperature in the greenhouse caused by the introduction of cold air. At the same time, the heat in the exhaust air is also effectively recovered, further improving the energy utilization efficiency of the system; further, after the wind is discharged to the external unit, the heat it carries is not directly wasted. The utility model uses the design of the outdoor condenser 13 to utilize the exhausted humid air for heat recovery again, which not only ensures the stability of the indoor working conditions, but also achieves the purpose of energy saving to the greatest extent.

[0029] Specifically, the fifth one-way valve 17 is also connected to the fourth one-way valve 16 .

[0030] In this embodiment, it should be noted that it is ensured that the refrigerant can directly return to the liquid reservoir 8 through the fifth one-way valve 17 and the fourth one-way valve 16 under certain working conditions. Through the cooperation of the fifth one-way valve 17 and the fourth one-way valve 16, the flow direction and flow rate of the refrigerant can be more accurately controlled to meet the requirements under different working modes.

[0031] Specifically, an outdoor fan 131 is provided on the outdoor condenser 13 .

[0032] In this embodiment, it should be noted that the main function of the external fan 131 is to promote heat exchange between the outdoor condenser 13 and the external environment and improve condensation efficiency. When the system is in cooling mode, the external fan 131 can accelerate the condensation process of the refrigerant in the outdoor condenser 13, thereby discharging heat to the outdoor environment more quickly.

[0033] Specifically, a first temperature sensor 21 is provided on the outdoor condenser 13 .

[0034] In this embodiment, it should be noted that the first temperature sensor 21 is used to monitor in real time the operating temperature of the outdoor condenser 13. Through this sensor, the system can obtain the temperature data of the outdoor condenser 13 in real time, and adjust the speed of the outdoor fan 131, the flow rate of the refrigerant and other parameters according to these data to ensure that the outdoor condenser 13 always works in the best state.

[0035] Specifically, a second temperature sensor 22 is arranged outdoors.

[0036] In this embodiment, it should be noted that the second temperature sensor 22 is mainly used to monitor the temperature of the outdoor environment. Through this sensor, the system can understand the change of the outdoor temperature in real time and adjust the working mode or parameters of the system as needed. For example, when the outdoor temperature is low, the system can automatically switch to the heating mode or adjust the operating parameters of the dehumidification mode to ensure that the temperature in the greenhouse is always kept within a range suitable for crop growth.

[0037] Specifically, a third temperature sensor 23 is provided on the inner fan 6 .

[0038] In this embodiment, it should be noted that the third temperature sensor 23 is used to monitor the temperature in the greenhouse in real time. Through this sensor, the system can obtain the temperature data in the greenhouse in real time, and adjust the speed of the internal fan 6, the flow rate of the refrigerant and other parameters according to these data to ensure that the temperature in the greenhouse is always kept within the set range. At the same time, these data can also provide important basis for the intelligent control of the system, such as automatically adjusting environmental parameters such as light intensity and humidity according to changes in indoor temperature.

[0039] Specifically, a fourth temperature sensor 24 is provided on the evaporator 12 .

[0040] In this embodiment, it should be noted that the fourth temperature sensor 24 is mainly used to monitor the operating temperature of the evaporator 12. Through this sensor, the system can understand the temperature change of the refrigerant in the evaporator 12 in real time, and adjust the operating parameters of the evaporator 12 or start the defrosting program as needed. For example, when the temperature of the evaporator 12 is too low, the system can automatically reduce the flow rate of the refrigerant or increase the temperature setting value of the evaporator 12 to prevent the evaporator 12 from frosting or freezing and affecting the refrigeration effect.

[0041] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents. These modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the utility model, and they should all be included in the scope of the claims and specification of the utility model.

Claims

1. A multi-stage heat recovery planting machine, characterized in that: It includes a compressor, a first four-way valve and a second four-way valve, wherein the first four-way valve includes a D port, an E port, an S port and a C port, and the second four-way valve includes a D' port, an E' port, an S' port and a C' port, the compressor is connected to the D port, the C port is connected to the D' port, the S port is connected to the S' port and is connected to a gas-liquid separator, and the gas-liquid separator is connected to the compressor; wherein, The C' port is connected to a reheater, an internal fan is arranged opposite to the reheater, the reheater is connected to a first one-way valve, the first one-way valve is connected to a liquid reservoir, the liquid reservoir is connected to an electronic expansion valve, the electronic expansion valve is connected to a first solenoid valve, the first solenoid valve is connected to a second one-way valve, the second one-way valve is connected to an evaporator, and the evaporator is connected to the E port; The E' port is connected to an outdoor condenser, the outdoor condenser is connected to a second solenoid valve, the second solenoid valve is connected to a third one-way valve, the third one-way valve is connected to a fourth one-way valve, and the fourth one-way valve is connected to the liquid reservoir; The electronic expansion valve is also connected to a fifth one-way valve, the fifth one-way valve is connected to a third solenoid valve, the third solenoid valve is connected to a sixth one-way valve, and the third solenoid valve and the sixth one-way valve are connected in parallel with the second solenoid valve and the third one-way valve; A seventh one-way valve is connected between the second one-way valve and the evaporator, and the seventh one-way valve is connected to the liquid reservoir.

2. The multi-stage heat recovery planting machine according to claim 1, characterized in that: The fifth one-way valve is also connected to the fourth one-way valve.

3. The multi-stage heat recovery planting machine according to claim 1, characterized in that: The outdoor condenser is provided with an external fan.

4. The multi-stage heat recovery planting machine according to claim 1, characterized in that: The outdoor condenser is provided with a first temperature sensor.

5. The multi-stage heat recovery type planting machine according to claim 1, characterized in that: A second temperature sensor is arranged outdoors.

6. The multi-stage heat recovery type planting machine according to claim 1, characterized in that: The inner fan is provided with a third temperature sensor.

7. The multi-stage heat recovery planting machine according to claim 1, characterized in that: The evaporator is provided with a fourth temperature sensor.

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