CN110566493A

CN110566493A - Variable frequency compressor, centrifugal water chilling unit, control method and temperature adjusting system

Info

Publication number: CN110566493A
Application number: CN201910858519.6A
Authority: CN
Inventors: 王超
Original assignee: Industrial and Commercial Bank of China Ltd ICBC
Current assignee: Industrial and Commercial Bank of China Ltd ICBC
Priority date: 2019-09-11
Filing date: 2019-09-11
Publication date: 2019-12-13

Abstract

The disclosure provides a variable frequency compressor, a centrifugal chiller, a control method and a temperature regulation system. This inverter compressor includes: the power source outputs power through the first rotating shaft; the frequency conversion structure at least comprises a first transmission piece and a second transmission piece which are mutually linked, the first transmission piece is fixedly connected with the first rotating shaft, a plurality of transmission areas are arranged on the first transmission piece, the transmission areas can rotate around the axis of the first rotating shaft, the second transmission piece obtains power through any one of the transmission areas, and when the first rotating shaft rotates at a specified rotating speed, the linear speed of at least one transmission area in the transmission areas is different from the linear speeds of other transmission areas in the transmission areas.

Description

Variable frequency compressor, centrifugal water chilling unit, control method and temperature adjusting system

Technical Field

The disclosure relates to the technical field of air conditioners, in particular to a variable frequency compressor, a centrifugal water chilling unit, a control method and a temperature adjusting system.

background

the compressor may be used in a variety of operating conditions and operated at different loads. In the related art, the compressor can only operate at high efficiency under a set operation condition, and deviation from the set operation condition can cause the operation efficiency of the compressor to be reduced and surging is easy to occur. In the related art, the frequency converter can be added, so that the compressor can be operated at high efficiency under various operating conditions.

In carrying out the disclosed concept, the inventors have discovered that there are at least the following problems in the prior art. The cost of the frequency converter is high, especially the high-voltage frequency converter. In addition, the added frequency converter has self electric energy loss, so that the energy efficiency cannot meet the requirement.

disclosure of Invention

in view of the above, the present disclosure provides an inverter compressor, a centrifugal chiller, a control method, and a temperature regulation system that can achieve low energy consumption.

One aspect of the present disclosure provides an inverter compressor, including: the power source outputs power through the first rotating shaft; the frequency conversion structure at least comprises a first transmission piece and a second transmission piece which are mutually linked, the first transmission piece is fixedly connected with the first rotating shaft, a plurality of transmission areas are arranged on the first transmission piece, the transmission areas can rotate around the axis of the first rotating shaft, the second transmission piece obtains power through any one of the transmission areas, and when the first rotating shaft rotates at a specified rotating speed, the linear speed of at least one transmission area in the transmission areas is different from the linear speeds of other transmission areas in the transmission areas.

The electronic equipment provided by the embodiment of the disclosure adjusts the output of the compressor by replacing the transmission area on the first transmission member, so that the compressor can efficiently operate under various operating conditions and various loads, the surge of a unit using the variable frequency compressor is reduced, and the reliability of the unit is improved. In addition, need not additionally to add the converter, can not lead to the cost too high because of additionally increasing the converter, also do not have the not satisfied problem of requirement of efficiency that leads to inverter compressor because of converter self energy consumption.

According to an embodiment of the present disclosure, the first transmission member includes a first truncated cone-shaped structure, a surface of which includes a plurality of transmission areas. The mesa configuration may include a plurality of circles, each circle having a different circumference and a corresponding different ground speed. Therefore, the transmission area can be changed by changing the circumference, the process is simple and easy to realize, and the energy loss is small.

according to an embodiment of the disclosure, the second transmission member comprises a second truncated cone structure, a surface of the second truncated cone structure comprising a plurality of transmission areas. Because the second transmission member also can have a plurality of transmission areas, the linear velocity of different transmission areas is different, and the cooperation first transmission member can effectively promote output adjustable range.

According to the embodiment of the disclosure, the surface of the first mesa-shaped structure is provided with a first tooth-shaped structure; the surface of the second platform-shaped structure is provided with a second tooth-shaped structure; wherein, the first tooth-shaped structure is meshed with the second tooth-shaped structure. The engaged transmission mode has small energy transmission loss and high reliability.

According to the embodiment of the disclosure, the surface of the first mesa-shaped structure is provided with a first tooth-shaped structure; the surface of the second platform-shaped structure is provided with a second tooth-shaped structure; frequency conversion structure still includes: and the transmission gear ring is arranged in a manner that the first platform-shaped structure and the second platform-shaped structure are separated, and the transmission gear ring is meshed with the first tooth-shaped structure and the second tooth-shaped structure respectively. Therefore, the output of the compressor can be adjusted by adjusting the transmission gear ring, the position of a rotating shaft of a power source or an output rotating shaft of the compressor does not need to be adjusted, and the frequency conversion adjustment is convenient to realize.

According to the embodiment of the disclosure, the section of the transmission gear ring comprises a first transmission surface and a second transmission surface which are adjacently arranged, and a preset included angle is formed between the first transmission surface and the second transmission surface; wherein, first driving face includes third profile of tooth structure, and third profile of tooth structure and first profile of tooth structure meshing to and the second driving face includes fourth profile of tooth structure, fourth profile of tooth structure and the meshing of second profile of tooth structure. Because the first transmission piece comprises the first truncated cone-shaped structure, the second transmission piece comprises the second truncated cone-shaped structure, and the first truncated cone-shaped structure and the second truncated cone-shaped structure are opposite and are arranged apart from each other, a certain included angle is formed between the surface of the first truncated cone-shaped structure and the surface of the second truncated cone-shaped structure. Through have the first drive face and the second drive face of predetermineeing the contained angle between each other at the setting of transmission ring gear, can make the ring gear respectively with first drive piece and second drive piece between better meshing, promote the reliability of frequency conversion structure.

According to the embodiment of the present disclosure, the frequency conversion structure further includes: a guide structure; and a fixed structure. The fixed structure is arranged in the guide structure in a sliding manner along the guide direction of the guide structure, and the transmission gear ring is arranged in the fixed structure in a rotating manner; the guiding direction of the guiding structure is the same as the extending direction of the first transmission surface, or the guiding direction of the guiding structure is the same as the extending direction of the second transmission surface. This makes it possible to adjust the position of the ring gear along the guiding method, and thus to adjust the output of the inverter compressor.

according to an embodiment of the present disclosure, the fixed structure comprises a bearing structure; and the ring gear serves as the inner race of the bearing arrangement. This helps reduce power transmission loss of the ring gear.

according to the embodiment of the present disclosure, the frequency conversion structure further includes: and the driving device is used for driving the fixing structure to move along the guiding direction. For example, the free end of the driving device is fixedly connected with the fixed structure, so that the fixed structure can be driven to move by controlling the movement of the free end.

according to an embodiment of the present disclosure, the cross-section of the first mesa comprises an arc and/or the cross-section of the second mesa comprises an arc. The linear type of the cross section of the adjusting table-shaped structure is beneficial to realizing linear frequency conversion, so that the moving distance of the transmission gear ring and the output variable quantity of the variable frequency compressor are in a linear relation, and the accuracy of control is promoted.

another aspect of the present disclosure provides a centrifugal chiller including: the variable frequency compressor is used for compressing the refrigerant to obtain a high-temperature high-pressure refrigerant and transmitting the high-temperature high-pressure refrigerant to the condenser; the condenser is arranged in a cold water environment and used for radiating heat of a high-temperature and high-pressure refrigerant to obtain a low-temperature and high-pressure refrigerant and transmitting the low-temperature and high-pressure refrigerant to the evaporator; and the evaporator is used for absorbing the heat of the environment where the evaporator is located through a low-temperature high-pressure refrigerant. The centrifugal water chilling unit can be operated under various operating conditions and efficiently under different loads.

Another aspect of the present disclosure provides a control method for the centrifugal chiller as described above, including: receiving a frequency conversion instruction; and responding to the frequency conversion instruction, controlling the driving device to drive the fixed structure to move along the guide direction so as to adjust the output of the frequency conversion structure.

another aspect of the present disclosure provides a temperature adjustment system, including: a centrifugal chiller as described above; one or more processors; a storage device for storing executable instructions which, when executed by a processor, implement the method as described above.

Another aspect of the present disclosure provides a computer-readable storage medium storing computer-executable instructions for implementing the method as described above when executed.

Another aspect of the disclosure provides a computer program comprising computer executable instructions for implementing the method as described above when executed.

drawings

The above and other objects, features and advantages of the present disclosure will become more apparent from the following description of embodiments of the present disclosure with reference to the accompanying drawings, in which:

Fig. 1 schematically illustrates an application scenario of an inverter compressor, a centrifugal chiller, a control method, and a temperature regulation system according to an embodiment of the present disclosure;

FIG. 2 schematically illustrates a system architecture suitable for use with an inverter compressor, centrifugal chiller, control method, and temperature regulation system in accordance with an embodiment of the present disclosure;

FIG. 3 schematically illustrates a schematic diagram of an inverter compressor according to an embodiment of the present disclosure;

FIG. 4 schematically illustrates a schematic diagram of an inverter compressor according to another embodiment of the present disclosure;

FIG. 5 schematically illustrates a schematic view of a ring gear according to an embodiment of the disclosure;

FIG. 6 schematically illustrates a cross-sectional view of a ring gear according to an embodiment of the disclosure;

FIG. 7 schematically illustrates a schematic diagram of an inverter compressor according to another embodiment of the present disclosure;

FIG. 8 schematically illustrates a schematic view of a fixation structure and a guiding structure according to an embodiment of the disclosure;

FIG. 9 schematically illustrates a schematic diagram of an inverter compressor according to another embodiment of the present disclosure;

Fig. 10 schematically illustrates a schematic diagram of a frequency conversion structure according to another embodiment of the present disclosure;

FIG. 11 schematically illustrates a block diagram of a centrifugal chiller according to an embodiment of the present disclosure;

FIG. 12 schematically illustrates a flow chart of a method of controlling a centrifugal chiller according to an embodiment of the present disclosure;

FIG. 13 schematically illustrates an inverter process schematic of an inverter compressor according to an embodiment of the present disclosure;

FIG. 14 schematically illustrates an inverter process schematic of an inverter compressor according to another embodiment of the present disclosure; and

FIG. 15 schematically illustrates a block diagram of a temperature regulation system according to an embodiment of the disclosure.

Detailed Description

hereinafter, embodiments of the present disclosure will be described with reference to the accompanying drawings. It should be understood that the description is illustrative only and is not intended to limit the scope of the present disclosure. In the following detailed description, for purposes of explanation, numerous specific details are set forth in order to provide a thorough understanding of the embodiments of the disclosure. It may be evident, however, that one or more embodiments may be practiced without these specific details. Moreover, in the following description, descriptions of well-known structures and techniques are omitted so as to not unnecessarily obscure the concepts of the present disclosure.

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the disclosure. The terms "comprises," "comprising," and the like, as used herein, specify the presence of stated features, steps, operations, and/or components, but do not preclude the presence or addition of one or more other features, steps, operations, or components.

all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art unless otherwise defined. It is noted that the terms used herein should be interpreted as having a meaning that is consistent with the context of this specification and should not be interpreted in an idealized or overly formal sense.

where a convention analogous to "at least one of A, B and C, etc." is used, in general such a construction is intended in the sense one having skill in the art would understand the convention (e.g., "a system having at least one of A, B and C" would include but not be limited to systems that have a alone, B alone, C alone, a and B together, a and C together, B and C together, and/or A, B, C together, etc.). Where a convention analogous to "A, B or at least one of C, etc." is used, in general such a construction is intended in the sense one having skill in the art would understand the convention (e.g., "a system having at least one of A, B or C" would include but not be limited to systems that have a alone, B alone, C alone, a and B together, a and C together, B and C together, and/or A, B, C together, etc.). The terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more features.

Fig. 1 schematically illustrates an application scenario of an inverter compressor, a centrifugal chiller, a control method and a temperature regulation system according to an embodiment of the present disclosure.

As shown in fig. 1, the XX server center has a plurality of servers 101, and in order to ensure stability and reliability of the servers 101, an environment as constant temperature as possible needs to be provided for the XX server center. Thus, the server center may be configured with the temperature adjustment device 100. For example, the ambient temperature of the server center may be adjusted by an air conditioner or the like.

With the intensive development, the building size of the server center is larger and larger, and the large central air conditioning system is more and more popular in the building. And the cold source core of the large-scale central air-conditioning system: the water chilling unit is also changed from a piston type water chilling unit with small capacity to a centrifugal type water chilling unit along with the increase of air conditioning load of a building.

The centrifugal water chilling unit discharges indoor heat to the outdoor by using the characteristics of refrigerant, and the core part of the centrifugal water chilling unit comprises a centrifugal compressor. The centrifugal compressor changes low-temperature and low-pressure refrigerant into high-temperature and high-pressure refrigerant through high-speed rotation, and provides a working foundation for a refrigeration process.

The air conditioning load inside the building is generally affected by the external environment, and when the ambient temperature is high, the air conditioning load inside the building is large, and the output of the centrifugal compressor is increased, and when the ambient temperature is low, the air conditioning load inside the building is small, and the output of the centrifugal compressor is reduced. Centrifugal compressors therefore need to meet demand at different loads. Moreover, in order to realize energy conservation and cost reduction of the air conditioning system, the air conditioning system can also use a cold storage system, a heat pump system and the like to save energy, namely, the building load requirement and the energy conservation and cost reduction requirement are met. Thus, there is a need for a centrifugal compressor that can operate under a variety of operating conditions. And with the development trend of green energy conservation and enterprise requirements of cost reduction and cost reduction, the requirement on efficient operation of the centrifugal compressor under various working conditions is higher and higher.

However, the conventional centrifugal compressor generally adopts a fixed-frequency unit, and can only operate at high efficiency under one working condition, the operating efficiency is greatly reduced under other working conditions, the energy consumption of the unit is greatly increased, and the energy conservation of an air conditioning system is not facilitated. In addition, under the design condition, when the internal load of the building is small, the flow rate of the refrigerant passing through the centrifugal compressor is greatly reduced, the outlet pressure of the centrifugal compressor is suddenly reduced, the pressure in a downstream pipeline is higher than the outlet pressure, and then the refrigerant flows back to the compressor to form the surge phenomenon of the centrifugal compressor. Centrifugal compressor surge can cause severe mechanical vibration of compressor components and hot end high temperatures and cause severe damage to components in a short time.

For example, an air conditioner in rainy or cloudy days needs to output different power than an air conditioner in sunny days. For example, the power required to be output by the air conditioner in summer and the power required to be output by the air conditioner in autumn are also different. However, the compressor of the air conditioner usually operates at a fixed frequency, and the output power of the compressor needs to meet various environmental requirements, which results in energy waste, such as excessive power output of the compressor of the air conditioner in autumn.

For the centrifugal compressor with the frequency converter, the frequency converter not only needs to consume electric energy, but also can generate heat, so that the efficiency of the frequency conversion centrifugal compressor is lower than that of a fixed-frequency unit under the design working condition. In addition, the frequency conversion amplitude of the frequency converter has a certain limit range, stepless frequency conversion cannot be realized, and the running condition of the unit can be improved only in a certain range. In addition, the frequency converter of the related art is high in cost, especially a high-voltage frequency converter, the increased frequency converter leads to a more complex control system, increases the control difficulty, and needs to adopt a special motor, so that the cost of the centrifugal compressor is greatly improved, and the investment return of equipment and the requirement of cost reduction of enterprises are influenced.

Centrifugal chiller units are commonly used in a variety of operating conditions and operate under different loads. The fixed frequency unit can only operate at high efficiency under the designed working condition, the efficiency is reduced and surging is easy to occur when the fixed frequency unit deviates from the working condition. The problems of increased energy consumption, complex control, adoption of a special motor, large heat productivity of the frequency converter and the like can occur when the frequency converter is added. Meanwhile, the cost of the frequency converter is high, especially the high-voltage frequency converter. Therefore, a centrifugal water chilling unit capable of efficiently operating under various working conditions and loads is needed, surge of the unit is reduced, and reliability of the unit is improved.

According to the variable frequency compressor, the centrifugal water chilling unit, the control method and the temperature adjusting system, stepless change of the transmission ratio is achieved through a mechanical frequency adjusting method, and therefore stepless speed change of the impeller of the compressor is achieved. For example, one transmission area is selected from a plurality of transmission areas of the frequency conversion structure for transmission, and different transmission areas correspond to different outputs. Therefore, on the premise of ensuring that the power source works in a high-efficiency interval, the output of the compressor can be adjusted by adjusting the mechanical adjusting mode of the transmission area, so that high-efficiency output under various operating conditions or different loads is realized.

Fig. 2 schematically shows an exemplary system architecture to which an electronic device and a control method thereof may be applied according to an embodiment of the present disclosure. It should be noted that fig. 2 is only an example of a system architecture to which the embodiments of the present disclosure may be applied to help those skilled in the art understand the technical content of the present disclosure, and does not mean that the embodiments of the present disclosure may not be applied to other devices, systems, environments or scenarios.

As shown in fig. 2, the system architecture 200 according to the embodiment may include an air conditioner 201, terminal devices 202, 203, a network 204, and a server 205. The network 204 is used to provide a medium of communication links between the air conditioner 201, the terminal devices 202, 203, and the server 205. Network 204 may include various connection types, such as wired, wireless communication links, or fiber optic cables, to name a few.

the air conditioner 201, the terminal devices 202, 203 interact with the server 205 through the network 204 to receive or transmit information and the like. The terminal devices 202, 203 include, but are not limited to, cell phones, tablet computers, desktop computers, industrial personal computers, and the like. It should be noted that the air conditioner 201 may directly interact with the server 205 through the network 204 to receive or transmit information, for example, the server 205 transmits a frequency conversion command to the air conditioner 201, or the air conditioner 201 transmits temperature information to the server 205.

The server 205 may be a database server, a background management server, a server cluster, or the like. The background management server may analyze and perform other processing on the received data such as the user request, and control the air conditioner 201 to execute a control instruction corresponding to the user request.

Fig. 3 schematically illustrates a schematic diagram of an inverter compressor according to an embodiment of the present disclosure.

As shown in fig. 3, the inverter compressor provided by the present disclosure may include: a power source 1 and a variable frequency structure 20.

The power source 1 outputs power through the first rotating shaft. For example, the power source 1 includes, but is not limited to, an electric motor, an engine, and the like. The first shaft 2 may be a rotor of an electric motor or the like.

The frequency conversion structure 2 at least comprises a first transmission piece 3 and a second transmission piece 4 which are mutually linked, the first transmission piece 3 is fixedly connected with the first rotating shaft 2, a plurality of transmission areas are arranged on the first transmission piece 3, the transmission areas can rotate around the axis of the first rotating shaft 2, the second transmission piece 4 obtains power through any one of the transmission areas, wherein when the first rotating shaft 2 rotates at a specified rotating speed, the linear speed of at least one transmission area in the transmission areas is different from the linear speeds of other transmission areas in the transmission areas.

The first transmission member 3 may include a transmission member, and the transmission member may have a linear slope or a non-linear slope having a certain inclination angle with respect to the axial direction of the first rotating shaft 2. The output of the transmission 20 can thus be adjusted by adjusting the area of the contact point of the second transmission member 4 on the first transmission member 3.

In one embodiment, the first transmission member comprises a first truncated cone-shaped structure, the surface of which comprises a plurality of transmission areas. This allows a plurality of drive zones with different linear velocities to be realized by the table structure.

In another embodiment, the second transmission member comprises a second truncated cone-shaped structure, the surface of the second truncated cone-shaped structure comprising a plurality of transmission areas. The second transmission part is set to have an adjustable transmission area, and the adjustable range of the output of the transmission structure can be effectively improved through the matched use of the first transmission part and the second transmission part.

The modes of transmission include but are not limited to: gear drive, belt drive, gear ring drive, friction drive, and the like. For example, the surface of the first mesa-shaped structure is provided with a first tooth-shaped structure and the surface of the second mesa-shaped structure is provided with a second tooth-shaped structure, wherein the first tooth-shaped structure is meshed with the second tooth-shaped structure.

fig. 4 schematically illustrates a schematic view of an inverter compressor according to another embodiment of the present disclosure.

as shown in fig. 4, the surface of the first mesa structure is provided with a first tooth structure, and the surface of the second mesa structure is provided with a second tooth structure. In addition, the frequency conversion structure further comprises: and the transmission gear ring 5 is arranged in a manner that the first platform-shaped structure and the second platform-shaped structure are separated, and the transmission gear ring is meshed with the first tooth-shaped structure and the second tooth-shaped structure respectively.

In a specific embodiment, the inverter compressor may include a power source 1, a first rotating shaft 2, a first transmission member 3, a second transmission member 4, a transmission ring gear 5, a compressor impeller rotating shaft 6 and a compressor impeller 7.

Taking a centrifugal compressor as an example for explanation, the power source 1 supplies power to the centrifugal stepless speed change compressor. The first rotating shaft 2 is connected to the power source 1 (e.g., fixedly connected to a rotor of the motor), and is a power output device of the power source 1. The first transmission member 3 is fixed on the first rotating shaft 2, and when the first rotating shaft 2 rotates, the first transmission member 3 rotates along with the first rotating shaft 2. The transmission gear ring 5 is meshed with the first transmission piece 3 and the second transmission piece 4 through gears respectively, the first transmission piece 3 rotates to drive the transmission gear ring 5 to rotate, and then the transmission gear ring 5 drives the second transmission piece 4 to rotate. The second transmission member 4 is fixed to the compressor impeller rotating shaft 6, and the compressor impeller rotating shaft 6 rotates in accordance with the rotation of the second transmission member 4. The compressor impeller rotating shaft 6 is connected to the compressor impeller 7, and the compressor impeller rotating shaft 6 rotates to drive the compressor impeller 7 to rotate. The compressor impeller 7 is a power output device of a centrifugal type stepless speed change compressor, and converts a low-temperature and low-pressure refrigerant (such as a gas refrigerant) into a high-temperature and high-pressure refrigerant (such as a gas or liquid refrigerant) by high-speed rotation.

FIG. 5 schematically illustrates a schematic view of a ring gear according to an embodiment of the disclosure. FIG. 6 schematically illustrates a cross-sectional view of a ring gear according to an embodiment of the disclosure.

as shown in fig. 5 and 6, the section of the ring gear 5 includes a first driving surface and a second driving surface which are adjacently disposed, and the first driving surface and the second driving surface have a predetermined included angle therebetween.

Wherein, first driving face includes third profile of tooth structure, and third profile of tooth structure and first profile of tooth structure meshing to and the second driving face includes fourth profile of tooth structure, fourth profile of tooth structure and the meshing of second profile of tooth structure.

For example, the ring gear 5 may comprise an internal gear arrangement. Since the first transmission member 3 and the second transmission member 4 have inclined surfaces, respectively, the cross section of the transmission gear ring 5 is set to be a triangular double-sided gear structure in order to facilitate meshing with the first transmission member 3 and the second transmission member 4, thereby realizing meshing between gears and movement on transmission members (such as gears on the surfaces of transmission members) in a shape of a table, a cone, or the like. Due to the special structural design, the transmission gear ring 5 can move on the first transmission piece 3 and the second transmission piece 4, so that the change of the transmission ratio between the first transmission piece 3 and the second transmission piece 4 is realized, and the change of the rotating speed between the first transmission piece 3 and the second transmission piece 4 is realized.

Fig. 7 schematically illustrates a schematic view of an inverter compressor according to another embodiment of the present disclosure.

As shown in fig. 7, the frequency conversion structure may further include: a guide structure 9 and a fixing structure 8. Wherein the fixing structure 8 is slidably arranged in the guide structure 9 in the guiding direction of the guide structure 9 and the gear teeth 5 are rotatably arranged in the fixing structure 8.

the guiding direction of the guiding structure 9 is the same as the extending direction of the first transmission surface (for example, the outer side inclined surface of the first transmission piece 3 in fig. 7), or the guiding direction of the guiding structure 9 is the same as the extending direction of the second transmission surface (for example, the outer side inclined surface of the second transmission piece 4 in fig. 7).

fig. 8 schematically illustrates a schematic view of a fixation structure and a guiding structure according to an embodiment of the disclosure.

As shown in fig. 8, the fixed structure 8 may comprise a bearing structure. In fig. 8, the fixed structure 8 may comprise a bearing outer race 81, the bearing outer race 81 being movable in the guiding direction of the guiding structure. In order to reduce transmission loss, the friction force can be reduced by providing balls 82 between the bearing inner race 83 and the bearing outer race 81. The bearing inner ring 83 and the ring gear 5 can be fixedly connected.

Fig. 9 schematically illustrates a schematic view of an inverter compressor according to another embodiment of the present disclosure.

As shown in fig. 9, the ring gear 5 serves as an inner race of the bearing structure. The ring gear 5 serves as a bearing inner ring 83 of the fixed structure. For example, a ball groove is provided on the outer surface of the ring gear 5, and a stopper groove is provided on the outer side surface of the ring gear 5 to fix the ring gear 5 in the bearing outer race 81.

Fig. 10 schematically illustrates a schematic diagram of a frequency conversion structure according to another embodiment of the present disclosure.

As shown in fig. 10, the frequency conversion structure may further include: the device 10 is driven. The drive means 10 are intended to drive the movement of the fixed structure in the above-mentioned guiding direction, i.e. the guiding direction of the guiding structure 9. Among them, the driving device 10 includes but is not limited to: electric machines, cylinders, hydraulic cylinders, engines, linear motors, etc. The drive means 10 may be connected to the fixed structure 8 by means of a link or the like.

To facilitate the linear frequency conversion, e.g. the distance the rotor of the linear motor moves is linearly related to the amount of change in the output of the frequency converting structure, the cross-section of the first mesa comprises an arc and/or the cross-section of the second mesa comprises an arc.

FIG. 11 schematically illustrates a block diagram of a centrifugal chiller according to an embodiment of the present disclosure.

As shown in fig. 11, embodiments of the present disclosure also provide a centrifugal chiller 1100 that includes the inverter compressor 1110, the condenser 1120, and the evaporator 1130 as described above.

The inverter compressor 1110 is configured to compress a refrigerant to obtain a high-temperature and high-pressure refrigerant, and transmit the high-temperature and high-pressure refrigerant to the condenser. The selection of the cooling medium may be the same as that of the prior art, and is not limited herein.

the condenser 1120 is disposed in a cold water environment, and configured to dissipate heat of a high-temperature and high-pressure refrigerant to obtain a low-temperature and high-pressure refrigerant, and transmit the low-temperature and high-pressure refrigerant to the evaporator.

The evaporator 1130 is used to absorb heat of an environment where the evaporator is located by a low-temperature and high-pressure refrigerant.

another aspect of the present disclosure also provides a control method for the centrifugal chiller as above.

Fig. 12 schematically illustrates a flow chart of a control method of a centrifugal chiller according to an embodiment of the present disclosure.

as shown in fig. 12, the control method for the centrifugal chiller 1100 includes operations S1201 to S1203.

In operation S1201, a frequency conversion instruction is received. For example, the centrifugal chiller 1100 may generate a frequency conversion command according to the collected environmental information, or generate a frequency conversion command according to a program control command or the like. In addition, the frequency conversion instruction can also be received from the client.

In operation S1203, in response to the frequency conversion instruction, the driving device is controlled to drive the fixed structure to move along the guiding direction so as to adjust the output of the frequency conversion structure.

Fig. 13 schematically illustrates an inverter process schematic of an inverter compressor according to an embodiment of the present disclosure.

as shown in fig. 13, when the frequency needs to be raised, the driving device 10 can be controlled to drive the fixed structure 8 to move in the direction indicated by the arrow. Because the linear velocity of the driving area of the first driving member 3 becomes large, the rotating speed that the first driving member 3 can output is higher on the premise that the rotating speed of the power source is constant. The gear ring as the bearing inner ring 83 meshes with the small-diameter gear region of the second transmission 4, so that the second transmission 4 has a higher rotational speed.

Fig. 14 schematically shows an inverter process schematic of an inverter compressor according to another embodiment of the present disclosure.

as shown in fig. 14, when the frequency needs to be reduced, the driving device 10 can be controlled to drive the fixed structure 8 to move in the direction indicated by the arrow. Because the linear velocity of the driving area of the first driving member 3 becomes smaller, the rotational speed that the first driving member 3 can output is smaller on the premise that the rotational speed of the power source is constant. The gear ring as the bearing inner ring 83 meshes with the large-diameter gear region of the second transmission 4, so that the second transmission 4 has a lower rotational speed.

As can be seen from the above embodiments, the stepless frequency-variable adjustment can be realized by controlling the driving device 10 to drive the fixed structure 8 to move.

Another aspect of the present disclosure also provides a control device for the centrifugal chiller as described above.

The control device for the centrifugal water chilling unit comprises a command receiving module and a frequency modulation module.

The receiving module is used for receiving the frequency conversion instruction. For example, the centrifugal chiller 1100 may generate a frequency conversion command according to the collected environmental information, or generate a frequency conversion command according to a program control command or the like. In addition, the frequency conversion instruction can also be received from the client.

The frequency modulation module is used for responding to the frequency conversion instruction, and controlling the driving device to drive the fixing structure to move along the guide direction so as to adjust the output of the frequency conversion structure.

Any of the modules, units, or at least part of the functionality of any of them according to embodiments of the present disclosure may be implemented in one module. Any one or more of the modules and units according to the embodiments of the present disclosure may be implemented by being split into a plurality of modules. Any one or more of the modules, units according to the embodiments of the present disclosure may be implemented at least partially as a hardware circuit, such as a Field Programmable Gate Array (FPGA), a Programmable Logic Array (PLA), a system on a chip, a system on a substrate, a system on a package, an Application Specific Integrated Circuit (ASIC), or may be implemented by any other reasonable means of hardware or firmware by integrating or packaging the circuits, or in any one of three implementations of software, hardware and firmware, or in any suitable combination of any of them. Alternatively, one or more of the modules, units according to embodiments of the present disclosure may be implemented at least partly as computer program modules, which, when executed, may perform the respective functions.

For example, any number of the instruction receiving module and the frequency modulation module may be combined and implemented in one module, or any one of the modules may be split into a plurality of modules. Alternatively, at least part of the functionality of one or more of these modules may be combined with at least part of the functionality of the other modules and implemented in one module. At least one of the instruction receiving module and the frequency modulation module according to the embodiments of the present disclosure may be implemented at least partially as a hardware circuit, such as a Field Programmable Gate Array (FPGA), a Programmable Logic Array (PLA), a system on a chip, a system on a substrate, a system on a package, an Application Specific Integrated Circuit (ASIC), or may be implemented in hardware or firmware by any other reasonable manner of integrating or packaging a circuit, or may be implemented in any one of three implementations of software, hardware, and firmware, or in a suitable combination of any of them. Alternatively, at least one of the instruction receiving module and the frequency modulation module may be at least partly implemented as a computer program module, which when executed may perform a corresponding function.

FIG. 15 schematically illustrates a block diagram of a temperature regulation system according to an embodiment of the disclosure. The temperature regulation system shown in fig. 15 is only an example, and should not bring any limitation to the function and the range of use of the embodiment of the present disclosure.

As shown in fig. 15, a temperature adjustment system 1500 according to an embodiment of the present disclosure includes a processor 1501 which can perform various appropriate actions and processes according to a program stored in a Read Only Memory (ROM)1502 or a program loaded from a storage section 1508 into a Random Access Memory (RAM) 1503. Processor 1501 may include, for example, a general purpose microprocessor (e.g., a CPU), an instruction set processor and/or associated chipset(s) and/or a special purpose microprocessor (e.g., an Application Specific Integrated Circuit (ASIC)), and so forth. The processor 1501 may also include on-board memory for caching purposes. Processor 1501 may include a single processing unit or multiple processing units for performing different acts of a method flow in accordance with embodiments of the present disclosure.

In the RAM 1503, various programs and data necessary for the operation of the temperature adjustment system 1500 are stored. The processor 1501, the ROM 1502, and the RAM 1503 are connected to each other by a bus 1504. The processor 1501 executes various operations of the method flow according to the embodiments of the present disclosure by executing programs in the ROM 1502 and/or RAM 1503. Note that the program may also be stored in one or more memories other than the ROM 1502 and the RAM 1503. The processor 1501 may also perform various operations by executing programs stored in one or more memories.

In accordance with an embodiment of the present disclosure, temperature regulation system 1500 may also include an input/output (I/O) interface 1505, with input/output (I/O) interface 1505 also connected to bus 1504. Temperature regulation system 1500 may also include one or more of the following components connected to I/O interface 1505: an input portion 1506 including a keyboard, a mouse, and the like; an output portion 1507 including a display such as a Cathode Ray Tube (CRT), a Liquid Crystal Display (LCD), and the like, and a speaker; a storage portion 1508 including a hard disk and the like; and a communication section 1509 including a network interface card such as a LAN card, a modem, or the like. The communication section 1509 performs communication processing via a network such as the internet. A drive 1510 is also connected to the I/O interface 1505 as needed. A removable medium 1511 such as a magnetic disk, an optical disk, a magneto-optical disk, a semiconductor memory, or the like is mounted on the drive 1510 as necessary, so that a computer program read out therefrom is mounted into the storage section 1508 as necessary.

the electronic device provided by the present disclosure may include a computer-readable storage medium, which may be contained in the device/apparatus/system described in the above embodiments; or may exist separately and not be assembled into the device/apparatus/system. The computer-readable storage medium carries one or more programs which, when executed, implement the method as shown above.

According to embodiments of the present disclosure, the computer-readable storage medium may be a non-volatile computer-readable storage medium, which may include, for example but is not limited to: a portable computer diskette, a hard disk, a Random Access Memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), a portable compact disc read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing. In the present disclosure, a computer readable storage medium may be any tangible medium that can contain, or store a program for use by or in connection with an instruction execution system, apparatus, or device. For example, according to embodiments of the present disclosure, a computer-readable storage medium may include the ROM 1502 and/or RAM 1503 described above and/or one or more memories other than the ROM 1502 and RAM 1503.

It should be noted that the implementation, solved technical problems, realized functions, and achieved technical effects of each device/module and the like in the device part embodiment are respectively the same as or similar to the implementation, solved technical problems, realized functions, and achieved technical effects of each corresponding step in the method part embodiment. The operations that each module can execute refer to the relevant parts of the method in the specification, and are not described in detail herein.

those skilled in the art will appreciate that various combinations and/or combinations of features recited in the various embodiments and/or claims of the present disclosure can be made, even if such combinations or combinations are not expressly recited in the present disclosure. However, these examples are for illustrative purposes only and are not intended to limit the scope of the present disclosure. Although the embodiments are described separately above, this does not mean that the measures in the embodiments cannot be used in advantageous combination. The scope of the disclosure is defined by the appended claims and equivalents thereof. Various alternatives and modifications can be devised by those skilled in the art without departing from the scope of the present disclosure, and such alternatives and modifications are intended to be within the scope of the present disclosure.

Claims

1. An inverter compressor comprising:

The power source outputs power through the first rotating shaft;

the frequency conversion structure at least comprises a first transmission piece and a second transmission piece which are mutually linked, the first transmission piece is fixedly connected with the first rotating shaft, a plurality of transmission areas are arranged on the first transmission piece, the transmission areas can rotate around the axis of the first rotating shaft, the second transmission piece obtains power through any one of the transmission areas,

wherein when the first rotating shaft rotates at a specified rotating speed, the linear velocity of at least one of the plurality of transmission areas is different from the linear velocities of other transmission areas in the plurality of transmission areas.

2. The inverter compressor of claim 1, wherein the first transmission member comprises a first table structure having a surface comprising a plurality of transmission areas.

3. The inverter compressor of claim 2, wherein the second transmission comprises a second truncated cone-shaped structure, a surface of the second truncated cone-shaped structure comprising a plurality of transmission areas.

4. The inverter compressor of claim 3, wherein:

a first tooth-shaped structure is arranged on the surface of the first platform-shaped structure;

The surface of the second frustum-shaped structure is provided with a second tooth-shaped structure;

Wherein the first tooth-shaped structure is meshed with the second tooth-shaped structure.

5. The inverter compressor of claim 3, wherein:

The frequency conversion structure further comprises: a transmission gear ring is arranged on the transmission gear ring,

The first platform-shaped structure and the second platform-shaped structure are arranged separately, and the transmission gear ring is meshed with the first tooth-shaped structure and the second tooth-shaped structure respectively.

6. the inverter compressor of claim 5, wherein:

The section of the transmission gear ring comprises a first transmission surface and a second transmission surface which are arranged adjacently, and a preset included angle is formed between the first transmission surface and the second transmission surface;

Wherein the first drive face includes a third tooth form, the third tooth form being in meshing engagement with the first tooth form, an

The second transmission surface comprises a fourth tooth-shaped structure, and the fourth tooth-shaped structure is meshed with the second tooth-shaped structure.

7. The inverter compressor of claim 6, wherein the inverter structure further comprises:

A guide structure; and

A fixed structure slidably disposed in the guide structure in a guide direction of the guide structure, and the power transmission ring gear is rotatably disposed within the fixed structure;

Wherein the guiding direction of the guiding structure is the same as the extension direction of the first transmission surface, or

The guiding direction of the guiding structure is the same as the extending direction of the second transmission surface.

8. the inverter compressor of claim 7, wherein:

The fixed structure comprises a bearing structure; and

The drive ring gear serves as an inner race of the bearing arrangement.

9. The inverter compressor of claim 7, wherein the inverter structure further comprises: and the driving device is used for driving the fixed structure to move along the guide direction.

10. The inverter compressor of claim 2, wherein:

The cross-section of the first mesa includes an arc; and/or

The cross-section of the second mesa includes an arc.

11. A centrifugal chiller comprising:

The inverter compressor according to any one of claims 1 to 10, configured to compress a refrigerant to obtain a high-temperature and high-pressure refrigerant, and transmit the high-temperature and high-pressure refrigerant to a condenser;

the condenser is arranged in a cold water environment and used for dissipating heat of the high-temperature and high-pressure refrigerant to obtain a low-temperature and high-pressure refrigerant and transmitting the low-temperature and high-pressure refrigerant to the evaporator; and

And the evaporator is used for absorbing the heat of the environment where the evaporator is located through the low-temperature high-pressure refrigerant.

12. a control method for the centrifugal chiller of claim 11, comprising:

Receiving a frequency conversion instruction; and

And responding to the frequency conversion instruction, controlling a driving device to drive the fixed structure to move along the guide direction so as to adjust the output of the frequency conversion structure.

13. A temperature regulation system comprising:

The centrifugal chiller of claim 11;

One or more processors;

storage means for storing executable instructions that, when executed by the processor, implement the method of claim 12.