CN207231006U - Evaporation device and air source heat pump based on air source heat pump - Google Patents

Abstract

The utility model discloses an evaporation plant and air source heat pump based on air source heat pump, this evaporation plant based on air source heat pump includes: the first fan and the first fan regulator are connected with the first fan; the second fan and a second fan regulator are connected with the second fan; and the controller is respectively connected with the first fan, the second fan, the first fan regulator and the second fan regulator so as to control the start and stop of the first fan and the second fan according to outdoor temperature and air volume requirements and control the first fan regulator and the second fan regulator to regulate the air volume of the first fan and the second fan. The utility model discloses a can open through the control fan and stop and combine together, control two fan control wares and adjust the amount of wind of fan, adjust evaporation plant's intake, control evaporation plant export refrigerant temperature and pressure to both guarantee the high-efficient operation of system, can reach energy-conserving purpose again.

Description

Evaporation device and air source heat pump based on air source heat pump

technical field

The utility model relates to the technical field of energy saving, in particular to an evaporation device based on an air source heat pump and the air source heat pump.

Background technique

Under the dual pressure of energy crisis and environmental crisis, energy conservation and emission reduction has become a topic of much concern. The heat pump is a high-efficiency energy-saving device based on the reverse Carnot cycle, which absorbs heat from a low-level heat source and transfers heat to a high-level heat source. As a form of air conditioning, heat pumps are widely used in building cold and heat sources. Its main components are evaporator, condenser, throttling device and compressor. When the air source heat pump is running at high temperature, the suction pressure/temperature will increase due to the high ambient temperature. With the accumulation of heat in the refrigerant cycle, the suction pressure will reach or even exceed the normal working suction of the compressor. The air pressure upper limit causes the air source heat pump to alarm and shut down, and the operation is unstable under high temperature conditions.

With the maturity of frequency conversion technology, the fans of air source heat pump evaporators began to use frequency conversion technology, but it is not widely used, and because frequency conversion control can only operate under certain environmental conditions, there are hidden dangers in its operation stability. In particular, the operating stability of each component of the air source heat pump is closely related and highly correlated. The unstable operation of a component will cause the entire unit to alarm and shut down, and sometimes the cause of the alarm cannot be found. How to define and match the frequency of frequency conversion technology with parameters such as ambient temperature/suction temperature/suction pressure, and how to improve the deficiencies in the application process of frequency conversion technology to ensure the operation stability of air source heat pumps under high temperature conditions are still worth studying.

Utility model content

The utility model aims to solve one of the technical problems in the related art mentioned above at least to a certain extent.

Therefore, an object of the present utility model is to propose an evaporation device based on an air source heat pump. The evaporator based on the air source heat pump can control the start and stop of the fan, control the two fan regulators to adjust the air volume of the fan, adjust the air intake of the evaporator, and control the temperature and pressure of the refrigerant at the outlet of the evaporator, so as to ensure the efficient operation of the system. , and can achieve the purpose of energy saving.

Another object of the present utility model is to provide an air source heat pump.

In order to achieve the above purpose, the first aspect of the utility model discloses an evaporation device based on an air source heat pump, comprising: a first fan and a first fan regulator connected to the first fan; a second fan and a controller connected to the first fan The second fan regulator connected to the second fan; the controller, the controller is respectively connected with the first fan, the second fan, the first fan regulator and the second fan regulator, so that according to the outdoor temperature and air volume The demand controls the start and stop of the first fan and the second fan, and controls the first fan regulator and the second fan regulator to adjust the air volume of the first fan and the second fan.

According to the evaporating device based on the air source heat pump of the present invention, it is possible to control the start and stop of the fan, control the two fan regulators to adjust the air volume of the fan, adjust the air intake of the evaporator, and control the temperature and pressure of the refrigerant at the outlet of the evaporator, thereby It not only ensures the efficient operation of the system, but also achieves the purpose of energy saving.

In addition, according to the utility model, the above-mentioned evaporation device based on the air source heat pump can also have the following additional technical features:

Further, it also includes: a control switch, the control switch is arranged between the controller and the first fan and the controller and the second fan, and the controller controls all the wind turbines through the control switch. Describe the start and stop of the first fan and the second fan.

Further, the control switch is a relay.

Further, the control switch includes a first sub-switch and a second sub-switch, the first sub-switch is set between the controller and the first fan, and the second sub-switch is set between the control Between the air conditioner and the second fan, so as to independently control the start and stop of the first fan and the second fan.

Further, both the first fan regulator and the second fan regulator are fan frequency converters.

Further, under high temperature conditions, the controller is used to control the first fan regulator and the second fan regulator to adjust the output of the first fan and the second fan when the outdoor temperature reaches a first preset temperature. Air volume, when the outdoor temperature reaches the second preset temperature, control to turn off the first fan, and control the second fan regulator to adjust the air volume of the second fan, when the outdoor temperature reaches the third preset temperature, and controlling to turn off the first fan and the second fan.

Further, the first preset temperature, the second preset temperature, and the third preset temperature are set according to the model of the air source heat pump and outdoor climate conditions.

The second aspect of the utility model discloses an air source heat pump, comprising: a compressor, an air storage tank, and a cooler; and the evaporation device based on the air source heat pump described in the first aspect. The air source heat pump can be combined by controlling the start and stop of the fan, controlling the two fan regulators to adjust the air volume of the fan, adjusting the air intake volume of the evaporator, and controlling the temperature and pressure of the refrigerant at the outlet of the evaporator, so as to ensure the efficient operation of the system and achieve The purpose of energy saving.

In addition, according to the utility model, the above-mentioned evaporation device based on the air source heat pump can also have the following additional technical features:

Further, the gas stored in the gas storage tank includes carbon dioxide gas.

Additional aspects and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.

Description of drawings

The above and/or additional aspects and advantages of the present utility model will become apparent and easy to understand from the description of the embodiments in conjunction with the following drawings, wherein:

Fig. 1 is a structural block diagram of an evaporation device based on an air source heat pump according to an embodiment of the present invention;

Fig. 2 is a working flow diagram of an evaporation device based on an air source heat pump according to an embodiment of the present invention;

Fig. 3 is a structural block diagram of an air source heat pump according to an embodiment of the present invention.

Detailed ways

Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present utility model, but should not be construed as limiting the present utility model.

An evaporation device based on an air source heat pump and an air source heat pump according to an embodiment of the present invention will be described below with reference to the accompanying drawings.

Fig. 1 is a structural block diagram of an evaporation device based on an air source heat pump according to an embodiment of the present invention.

As shown in FIG. 1 , an evaporation device 100 based on an air source heat pump according to an embodiment of the present invention includes: a first fan 110 , a first fan regulator 120 connected to the first fan 110 , a second fan 130 , and The second fan regulator 140 and the controller 150 connected to the second fan 130 .

Among them, the first fan regulator 120 and the second fan regulator 140 adjust the air intake of the evaporator 100, so as to adjust the outlet air temperature of the evaporator 100, so that the pressure of the compressor of the air source heat pump meets the design requirements, thereby ensuring Stable and efficient operation of the air source heat pump.

The controller 150 is respectively connected with the first fan 110, the second fan 120, the first fan regulator 130 and the second fan regulator 140, so as to control the start and stop of the first fan 110 and the second fan 130 according to the outdoor temperature and air volume demand , and control the first fan regulator 120 and the second fan regulator 140 to adjust the air volume of the first fan 110 and the second fan 130, so that the suction pressure requirements of the compressor of the air source heat pump can be met, ensuring that the air source heat pump Stable operation.

According to the evaporating device based on the air source heat pump according to the embodiment of the utility model, it can be combined by controlling the start and stop of the fan, controlling the two fan regulators to adjust the air volume of the fan, adjusting the air intake volume of the evaporating device, and controlling the temperature and pressure of the refrigerant at the outlet of the evaporating device , so as to not only ensure the efficient operation of the system, but also achieve the purpose of energy saving.

In some embodiments, it also includes: a control switch, the control switch is set between the controller 150 and the first fan 110 and between the controller 150 and the second fan 110, the controller 150 controls the first fan 110 and the second fan 110 through the control switch The start and stop of fan 130. Further, the control switch can be a relay.

In some embodiments, the control switch includes a first sub-switch and a second sub-switch, the first sub-switch is arranged between the controller 150 and the first fan 110, and the second sub-switch is arranged between the controller 150 and the second fan 130. Between, to independently control the start and stop of the first fan 110 and the second fan 130 .

In some embodiments, both the first fan regulator 120 and the second fan regulator 140 are fan frequency converters. The fan frequency converter can adjust the air volume frequency of the fan through frequency conversion.

In some embodiments, under high temperature conditions, the controller 150 is used to control the first fan regulator 120 and the second fan regulator 140 to adjust the first fan 110 and the second fan regulator 140 when the outdoor temperature reaches a first preset temperature. The air volume of the fan 130 is controlled to turn off the first fan 110 when the outdoor temperature reaches the second preset temperature, and the second fan regulator 140 is controlled to adjust the air volume of the second fan 130. When the outdoor temperature reaches the third preset temperature, The control turns off the first fan 110 and the second fan 130 .

As shown in Figure 2, specifically, when the air source heat pump equipment is running, as the outdoor temperature rises, the heat transfer temperature difference increases. In order to satisfy the suction pressure not exceeding the upper limit of the normal operation of the compressor, it is necessary to reduce the evaporator 100 The cooling air volume, that is, reduce the frequency of the fan through the frequency converter, reduce its input power, and reduce the air volume. As the outdoor temperature continues to rise to the preset value t1, that is, when the air volume is greater than the air volume required to stop one fan, the frequency conversion of the two fans can be controlled at the same time to reduce the frequency of the fan and reduce the input power of the fan to reduce the air volume. . When the frequency conversion of the first fan 110 and the second fan 130 both reach the lower limit of the frequency, and still cannot meet the air volume requirement, that is, when the temperature rises to t2, one of the fans is turned off, and the frequency converter of the other fan is adjusted to change the frequency of the other fan. Make the air volume meet the operating requirements and make the system run stably. When the outdoor temperature rises to the set value t3, one stop and one change still does not meet the demand for air volume, then the two fans are turned off to stop the equipment from running.

Further, the first preset temperature, the second preset temperature, and the third preset temperature are set according to the model of the air source heat pump and outdoor climate conditions. Specifically, different types of compressors have different pressure ranges for normal operation, different types of fans have different frequency ranges, and different regions have different temperature and humidity. As a result, the model of the unit or the operating environment conditions of the same unit affect the determination of each preset temperature value. The first preset temperature, the second preset temperature, and the third preset temperature need to be determined according to the model of the air source heat pump unit and the climatic conditions of the applicable area, and the determination method can be carried out by simulation or enthalpy difference laboratory experiments.

According to the evaporating device based on the air source heat pump according to the embodiment of the utility model, it can be combined by controlling the start and stop of the fan, controlling the two fan regulators to adjust the air volume of the fan, adjusting the air intake volume of the evaporating device, and controlling the temperature and pressure of the refrigerant at the outlet of the evaporating device , so as to not only ensure the efficient operation of the system, but also achieve the purpose of energy saving.

Further, an embodiment of the present utility model discloses an air source heat pump, including: a compressor 200, an air storage tank 300, a cooler 400, and an evaporation device based on an air source heat pump according to any one of the above embodiments. The air source heat pump can be combined by controlling the start and stop of the fan, controlling the two fan regulators to adjust the air volume of the fan, adjusting the air intake volume of the evaporator, and controlling the temperature and pressure of the refrigerant at the outlet of the evaporator, so as to ensure the efficient operation of the system and achieve The purpose of energy saving.

In some embodiments, the gas stored in the gas tank includes carbon dioxide gas. That is, the present invention can be a carbon dioxide air source heat pump. In addition, the present invention is also applicable to situations where the suction pressure is too high and the compressor is unstable when a common air source heat pump operates at high temperature.

In addition, other configurations and functions of the air source heat pump according to the embodiment of the present utility model are known to those skilled in the art, and will not be repeated in order to reduce redundancy.

In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be interpreted as indicating or implying relative importance or implicitly specifying the quantity of indicated technical features. Thus, the features defined as "first" and "second" may explicitly or implicitly include at least one of these features. In the description of the present utility model, "plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

In this utility model, unless otherwise specified and limited, terms such as "installation", "connection", "connection" and "fixation" should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection. Connected, or integrated; may be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediary, and may be an internal communication between two elements or an interactive relationship between two elements, unless otherwise stated Clearly defined. Those of ordinary skill in the art can understand the specific meanings of the above terms in the present utility model according to specific situations.

In the present invention, unless otherwise clearly specified and limited, the first feature may be in direct contact with the first feature or the first feature and the second feature through an intermediary indirect contact. Moreover, "above", "above" and "above" the first feature on 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. "Below", "beneath" and "beneath" the first feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is less horizontally than the second feature.

In the description of this specification, descriptions referring to the terms "one embodiment", "some embodiments", "example", "specific examples", or "some examples" mean that specific features described in connection with the embodiment or example , structures, materials or features are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the described specific features, structures, materials or characteristics may be combined in any suitable manner in any one or more embodiments or examples. In addition, those skilled in the art can combine and combine different embodiments or examples and features of different embodiments or examples described in this specification without conflicting with each other.

Although the embodiments of the present invention have been shown and described above, it can be understood that the above-mentioned embodiments are exemplary and should not be construed as limitations of the present invention, and those skilled in the art are within the scope of the present invention. Variations, modifications, substitutions and variations can be made to the above-described embodiments.

Claims (9)

1. An evaporation device based on an air source heat pump, characterized in that it comprises: a first fan and a first fan regulator connected to the first fan; a second fan and a second fan regulator connected to the second fan; A controller, the controller is respectively connected with the first fan, the second fan, the first fan regulator and the second fan regulator, so as to control the first fan and the second fan according to the outdoor temperature and air volume demand Start and stop, and control the first fan regulator and the second fan regulator to adjust the air volume of the first fan and the second fan. 2. The evaporation device based on an air source heat pump according to claim 1, further comprising: A control switch, the control switch is arranged between the controller and the first fan and between the controller and the second fan, the controller controls the first fan and the second fan through the control switch The start and stop of the second fan. 3. The evaporation device based on an air source heat pump according to claim 2, wherein the control switch is a relay. 4. The evaporation device based on an air source heat pump according to claim 2 or 3, wherein the control switch includes a first sub-switch and a second sub-switch, and the first sub-switch is set on the controller Between the first fan, the second sub-switch is arranged between the controller and the second fan to independently control the start and stop of the first fan and the second fan. 5 . The evaporation device based on an air source heat pump according to claim 1 , wherein both the first fan regulator and the second fan regulator are fan frequency converters. 6. The evaporation device based on an air source heat pump according to claim 1, characterized in that, under high temperature conditions, the controller is used to control the first fan to adjust the temperature when the outdoor temperature reaches the first preset temperature The controller and the second fan regulator adjust the air volume of the first fan and the second fan. When the outdoor temperature reaches the second preset temperature, the first fan is controlled to be turned off, and the second fan regulator is controlled to adjust the air volume of the second fan. The air volume of the second fan is controlled to turn off the first fan and the second fan when the outdoor temperature reaches the third preset temperature. 7. The evaporation device based on an air source heat pump according to claim 6, wherein the first preset temperature, the second preset temperature, and the third preset temperature are based on the model of the air source heat pump and the outdoor climate conditions set. 8. An air source heat pump, characterized in that it comprises: Compressors, gas storage tanks, coolers; The evaporation device based on an air source heat pump according to any one of claims 1-7. 9. The air source heat pump according to claim 8, wherein the gas stored in the gas storage tank includes carbon dioxide gas.