阅读说明：本技术 变频空调器的控制方法 (The control method of transducer air conditioning ) 是由 汪亚东 张龙 于 2019-07-15 设计创作，主要内容包括：本发明属于空调器技术领域,具体涉及一种变频空调器的控制方法。本发明旨在解决现有具备废热回收功能的空调系统的节能效果不佳的问题。为此目的,本发明的变频空调器的控制方法能够根据不同的支路运行情况确定变频泵的频率模式,以便通过变频泵的变频运行在满足本发明的空调器的基本运行需求和热水加热需求、实现废热回收的基础上提升该空调器的节能效果。再者,本发明的控制方法还能够根据变频泵的当前频率模式和电子膨胀阀的开度变化情况,确定变频泵是否需要降频,并且在变频泵需要降频的情形下,针对变频泵的不同频率模式执行相应的降频方案,从而对空调器的节能效果再一次进行优化提升。(The invention belongs to air conditioner technical fields, and in particular to a kind of control method of transducer air conditioning.Present invention seek to address that the problem that the energy-saving effect of the existing air-conditioning system for having waste heat recovery function is bad.For this purpose, the control method of transducer air conditioning of the invention can determine the frequency mode of variable frequency pump according to different branch operating condition, will pass through the energy-saving effect that the converting operation of variable frequency pump promotes the air conditioner on the basis of meeting the basic operation demand and hot water heating demand, realization Waste Heat Recovery of air conditioner of the invention.Furthermore, control method of the invention can also be according to the current frequency mode of variable frequency pump and the aperture situation of change of electric expansion valve, determine whether variable frequency pump needs frequency reducing, and in the case of variable frequency pump needs frequency reducing, corresponding frequency reducing scheme is executed for the different frequency mode of variable frequency pump, so that the energy-saving effect to air conditioner optimizes promotion again.)

1. a kind of control method of transducer air conditioning, which is characterized in that the transducer air conditioning includes compressor, electronic expansion Valve, evaporator, condenser and heat exchange water route, the compressor, the electric expansion valve, the evaporator and the condenser structure At the coolant circulating system of closed loop, the heat exchange water route includes the first heat exchange branch, the second heat exchange branch, variable frequency pump and valve group Part, the first heat exchange branch road are provided with water storage device, and the second heat exchange branch road is provided with water supply device and draining dress It sets, any one in the first heat exchange branch and the heat exchange branch can be connected to the variable frequency pump, the condensation Device is radiated by flowing water in the first heat exchange branch or the second heat exchange branch, and the valve member can make institute It states heat exchange water route and switches between the first heat exchange branch and the second heat exchange branch, the variable frequency pump control described first is changed The flow regime of hot branch or the water in the second heat exchange branch,

The control method includes:

Obtain the frequency mode of the variable frequency pump；

Obtain the aperture situation of change of the electric expansion valve；

According to the aperture situation of change of the frequency mode of the variable frequency pump and the electric expansion valve, make the variable frequency pump selectivity Ground is run in a manner of corresponding frequency reducing.

2. control method according to claim 1, which is characterized in that " according to the frequency mode of the variable frequency pump and described The aperture situation of change of electric expansion valve, runs the variable frequency pump selectively in a manner of corresponding frequency reducing " the step of include:

If the variable frequency pump is under high frequency mode with the operation of the first raising frequency rate raising frequency and the aperture of the electric expansion valve Reduce, be then reduced to the variable frequency pump after the first setpoint frequency again with the operation of the second raising frequency rate raising frequency, wherein

The first raising frequency rate is greater than the second raising frequency rate.

3. control method according to claim 2, which is characterized in that " variable frequency pump is made to be reduced to the first setpoint frequency Afterwards again with the second raising frequency rate raising frequency operation " the step of include:

After so that the variable frequency pump is run the first preset time with present operating frequency, it is just reduced to the first setpoint frequency, then with the The operation of two raising frequency rate raising frequencies.

4. control method according to claim 1, which is characterized in that " according to the frequency mode of the variable frequency pump and described The aperture situation of change of electric expansion valve, runs the variable frequency pump selectively in a manner of corresponding frequency reducing " the step of include:

If the variable frequency pump is run under low frequency mode and the aperture of the electric expansion valve reduces, make the variable frequency pump It is reduced to the second setpoint frequency to run.

5. control method according to claim 4, which is characterized in that " variable frequency pump is made to be reduced to the second setpoint frequency Operation " the step of include:

After making the variable frequency pump run the second preset time with present operating frequency, just make that the second setpoint frequency is reduced to run.

6. control method according to any one of claim 1 to 5, which is characterized in that " obtaining the frequency of the variable frequency pump Before the step of rate mode ", the control method further include:

Obtain the valve opening and closing information of the valve member；

According to the valve opening and closing information, the present branch operating condition in the heat exchange water route is determined；

The step of " frequency mode for obtaining the variable frequency pump " includes:

According to the present branch operating condition, the frequency mode of the variable frequency pump is determined.

7. control method according to claim 6, which is characterized in that " according to the present branch operating condition, determine institute State the frequency mode of variable frequency pump " the step of include:

If the heat exchange water route is run with the first heat exchange branch, the temperature of the water in the first heat exchange branch is obtained Parameter；

If the temperature parameter increases and raised temperature parameter is less than set temperature, make the variable frequency pump in high frequency mode Under with the first raising frequency rate raising frequency operation.

8. control method according to claim 7, which is characterized in that in the variable frequency pump, raising frequency is run under high frequency mode In the case of, the control method further include:

If the variable frequency pump raising frequency switches to the heat-exchanging water routing the first heat exchange branch to maximum operation frequency The second heat exchange branch, while the variable frequency pump being made to switch to low frequency mode operation by high frequency mode.

9. control method according to claim 6, which is characterized in that " according to the present branch operating condition, determine institute State the frequency mode of variable frequency pump " the step of include:

If the temperature parameter of the water in first heat exchange water route is equal to set temperature, make heat-exchanging water routing described the One heat exchange branch switches to the second heat exchange branch, while runs the variable frequency pump with low frequency mode.

10. control method according to claim 6, which is characterized in that " according to the present branch operating condition, determine The step of running frequency of the variable frequency pump " includes:

If the heat exchange water route is run with the second heat exchange branch, run the variable frequency pump with low frequency mode.

Technical field

The invention belongs to air conditioner technical fields, and in particular to a kind of control method of transducer air conditioning.

Background technique

Due to summer weather heat, people's can also be increased accordingly with water, and city will be increased with water power supply, by Be not in the temperature requirement of summer water it is very high, in the epoch of energy shortages, if by air-conditioning generate waste heat be used to heat life Water is applied flexibly to meet the daily demand of people, can both exempt the consumption with hot water to energy such as combustion gas, is imitated to global warming is improved Should also have certain contribution.

A kind of air-conditioning system is now provided.Compared with existing air conditioner, which can absorb air-conditioning including one and give up Heat and the cycle heat exchange water route of heat hot water and an acyclic heat exchange water route for having water inlet end and a water outlet, so as to according to heat The demand for heat of water exchanges heat to switch above-mentioned two water routes.Due to the flow demand not phase of the water in two water routes that exchange heat Together, therefore, if sending demand and being arranged to determine frequency pump to can satisfy the water transport in two heat exchange water routes, will lead to the energy need not It wastes.For this problem, now consider to provide a kind of and air-conditioning system more matched control method in overall heat exchange water route, with Just the energy-saving effect of the air-conditioning system is further promoted.

Summary of the invention

In order to solve the above problem in the prior art, in order to solve the above-mentioned air-conditioning system for having waste heat recovery function The bad problem of energy-saving effect, the present invention provides a kind of control method of transducer air conditioning, the transducer air conditioning includes Compressor, electric expansion valve, evaporator, condenser and heat exchange water route, the compressor, the electric expansion valve, the evaporation Device and the condenser constitute the coolant circulating system of closed loop, and the heat exchange water route includes the first heat exchange branch, the second heat exchange branch Road, variable frequency pump and valve member, the first heat exchange branch road are provided with water storage device, and the second heat exchange branch road is provided with Water supply device and drainage arrangement, it is described first heat exchange branch and it is described heat exchange branch in any one can be with the frequency conversion Pump connection, the condenser is radiated by flowing water in the first heat exchange branch or the second heat exchange branch, described Valve member can be such that the heat exchange water route switches between the first heat exchange branch and the second heat exchange branch, the frequency conversion The flow regime of the pump control first heat exchange branch or the water in the second heat exchange branch, the control method include: Obtain the frequency mode of the variable frequency pump；Obtain the aperture situation of change of the electric expansion valve；According to the frequency of the variable frequency pump The aperture situation of change of rate mode and the electric expansion valve, transports the variable frequency pump selectively in a manner of corresponding frequency reducing Row.

It is " swollen according to the frequency mode of the variable frequency pump and the electronics in the optimal technical scheme of above-mentioned control method The aperture situation of change of swollen valve, runs the variable frequency pump selectively in a manner of corresponding frequency reducing " if the step of include: institute It states variable frequency pump and is reduced under high frequency mode with the aperture of the operation of the first raising frequency rate raising frequency and the electric expansion valve, then make institute It states variable frequency pump to be reduced to after the first setpoint frequency again with the operation of the second raising frequency rate raising frequency, wherein the first raising frequency rate is big In the second raising frequency rate.

In the optimal technical scheme of above-mentioned control method, " make the variable frequency pump be reduced to after the first setpoint frequency again with Second raising frequency rate raising frequency operation " the step of include: make the variable frequency pump with present operating frequency run the first preset time after, It is reduced to the first setpoint frequency, then just with the operation of the second raising frequency rate raising frequency.

It is " swollen according to the frequency mode of the variable frequency pump and the electronics in the optimal technical scheme of above-mentioned control method The aperture situation of change of swollen valve, runs the variable frequency pump selectively in a manner of corresponding frequency reducing " the step of further include: if The variable frequency pump is run under low frequency mode and the aperture of the electric expansion valve reduces, then the variable frequency pump is made to be reduced to the The operation of two setpoint frequencies.

In the optimal technical scheme of above-mentioned control method, " making the variable frequency pump that the second setpoint frequency is reduced to run " Step includes: after so that the variable frequency pump is run the second preset time with present operating frequency, the second setpoint frequency to be just reduced to transport Row.

In the optimal technical scheme of above-mentioned control method, " frequency mode for obtaining the variable frequency pump " the step of before, institute State control method further include: in the case of the variable frequency pump brings into operation, obtain the valve opening and closing information of the valve member； According to the valve opening and closing information, the present branch operating condition in the heat exchange water route is determined；" obtain the frequency of the variable frequency pump The step of mode " includes: to determine the frequency mode of the variable frequency pump according to the present branch operating condition.

In the optimal technical scheme of above-mentioned control method, " according to the present branch operating condition, the frequency conversion is determined The frequency mode of pump " if the step of include: the heat exchange water route with the first heat exchange branch operation, obtain described first The temperature parameter of water in heat exchange branch；If the temperature parameter increases and raised temperature parameter is less than set temperature, Make the variable frequency pump under high frequency mode with the operation of the first raising frequency rate raising frequency.

In the optimal technical scheme of above-mentioned control method, in the variable frequency pump situation that raising frequency is run under high frequency mode Under, the control method further include: if the variable frequency pump raising frequency makes described in the heat-exchanging water routing to maximum operation frequency First heat exchange branch switches to the second heat exchange branch, while the variable frequency pump being made to switch to low frequency mode fortune by high frequency mode Row.

In the optimal technical scheme of above-mentioned control method, " according to the present branch operating condition, the frequency conversion is determined The frequency mode of pump " if the step of include: it is described first heat exchange water route in water temperature parameter be equal to set temperature, make Heat-exchanging water routing the first heat exchange branch switches to the second heat exchange branch, while making the variable frequency pump with Low-frequency Modes Formula operation.

In the optimal technical scheme of above-mentioned control method, " according to the present branch operating condition, the frequency conversion is determined The running frequency of pump " if the step of include: the heat exchange water route with the second heat exchange branch operation, make the variable frequency pump It is run with low frequency mode.

It will be appreciated to those of skill in the art that the control method of transducer air conditioning of the invention can be according to variable frequency pump Current frequency mode and electric expansion valve aperture situation of change, determine whether variable frequency pump needs frequency reducing, and in variable frequency pump In the case of needing frequency reducing, corresponding frequency reducing scheme is executed for the different frequency mode of variable frequency pump, thus meeting frequency conversion sky It adjusts the basic operation demand of device, influence the energy consumption for reducing variable frequency pump on the basis of its condenser normally exchanges heat as much as possible, from And make air conditioner that can also further promote the energy-saving effect of air conditioner while realizing Waste Heat Recovery.

Detailed description of the invention

The preferred embodiment of the present invention described with reference to the accompanying drawings.Attached drawing are as follows:

Fig. 1 is the key step flow chart of the control method of transducer air conditioning of the invention；

Fig. 2 is the first operation curve figure of the control method of transducer air conditioning of the invention；

Fig. 3 is the first operation curve figure of the control method of transducer air conditioning of the invention.

Specific embodiment

It will be apparent to a skilled person that in the description of the present invention, although according to particular order in the application Describe each step of control method of the invention, but these be not sequentially it is restrictive, without departing from of the invention Under the premise of basic principle, those skilled in the art can execute the step in a different order.

The bad problem of energy-saving effect based on the air-conditioning system for having waste heat recovery function pointed out in background technique, this Invention provides a kind of control method of transducer air conditioning, it is intended to further be promoted on the basis of air conditioner realizes Waste Heat Recovery The energy-saving effect of air conditioner.

In the inventive solutions, the present invention provides a kind of transducer air conditioning, which includes compression Mechanical, electrical sub- expansion valve, evaporator, condenser and heat exchange water route.Compressor, electric expansion valve, evaporator and condenser composition are closed The coolant circulating system of ring.Above-mentioned transducer air conditioning is provided with air supply device in the position of evaporator, so as to by evaporator heat exchange The cold wind generated afterwards is transported to interior.Heat exchange water route specifically includes the first heat exchange branch, the second heat exchange branch, variable frequency pump and valve Component, wherein the first heat exchange branch road is provided with water storage device, and the second heat exchange branch road is provided with water supply device and draining dress It sets, any one in the first heat exchange branch and the branch that exchanges heat can be connected to variable frequency pump.First heat exchange branch and second changes At least part of hot branch flows through condenser, so that condenser can be by the first heat exchange branch or the second heat exchange branch Flowing water heat dissipation.Valve member includes multiple switch valves for being respectively arranged at the first heat exchange branch and the second heat exchange branch, on The control module for stating transducer air conditioning can control multiple switch valve and turn on or off, and be separated with will pass through open/close portion The mode for closing valve switches the work water route in heat exchange water route between the first heat exchange branch and the second heat exchange branch, to be switched to The branch that condenser exchanges heat.Above-mentioned variable frequency pump can control the stream of the first heat exchange branch or the water in the second heat exchange branch Dynamic state promotes water to flow in the first heat exchange branch or the second heat exchange branch, the water in regulation first/second heat exchange branch Flow.

By the system structure of above-mentioned transducer air conditioning it is found that the condenser of transducer air conditioning can pass through the first heat exchange branch Or second heat exchange branch in flowing water exchange heat.And when the condenser is exchanged heat by the first heat exchange branch, it should Water in heat exchange branch circulates, and stores so that the heat released using condenser is heated water to after certain temperature to storage In water installations, taken for user.When condenser is exchanged heat by the second heat exchange branch, water and condenser in the branch into It is discharged after row heat exchange.Since the flow path of the water of two heat exchange branches is different, in the first heat exchange branch with condenser The temperature of water for carrying out heat exchange gradually rises, and is gradually reduced with the temperature difference of condenser, and in the second heat exchange branch with condenser The temperature for carrying out the water of heat exchange is the temperature of substantially invariable supply water.In consideration of it, for the different branch in heat exchange water route Exchange heat situation, and the frequency mode of frequency conversion pump operation is different.

The preferred embodiment of the present invention is described below with reference to above-mentioned transducer air conditioning.

It is the key step flow chart of the control method of transducer air conditioning of the invention referring initially to Fig. 1, Fig. 1.Such as Fig. 1 institute Show, control method of the invention includes:

Step S1: the frequency mode of variable frequency pump is obtained；

Step S2: the aperture situation of change of electric expansion valve is obtained；

Step S3: according to the aperture situation of change of the frequency mode of variable frequency pump and electric expansion valve, keep variable frequency pump selective Ground is run in a manner of corresponding frequency reducing.

In step sl, the frequency mode of variable frequency pump specifically refers to the operational mode in the different frequency scope of variable frequency pump. For example, variable frequency pump is divided into high band in a higher frequency range, when variable frequency pump is run with the frequency in the high band Mode be high frequency mode.Similarly, frequency mode can also include low frequency mode.In this step, frequency mode is obtained Concrete mode be not limit.For example, the acquisition modes of frequency mode can be the control unit of general transducer air conditioning Active detecting simultaneously obtains, and can also be that control associated there is singly when transducer air conditioning determines the frequency mode of variable frequency pump The information of representative frequency mode that member is automatically generated and stored, directly transfers currently represent the information of frequency mode i.e. when needed It can.

In step s 2, the aperture that the aperture situation of change of electric expansion valve specifically refers to electric expansion valve increases or subtracts Small situation.Monitoring list similar, which can also be changed by that can monitor the aperture of electric expansion valve Information that member obtains in real time or transferring, automatically generating and store in each aperture variation of electric expansion valve.

In step s3, the frequency mode of variable frequency pump can represent the current heat exchange demand of the condenser of transducer air conditioning, The aperture situation of change of electric expansion valve is directly related to the variation of the cold medium flux in coolant circulating system, represents convertible frequency air-conditioner The current refrigeration situation of device.According to the aperture situation of change of the frequency mode of variable frequency pump and electric expansion valve under suitable opportunity Make variable frequency pump frequency reducing in a certain way run, can current operation demand and condenser based on transducer air conditioning currently exchange heat need The energy consumption for reducing variable frequency pump is asked, to further promote the energy-saving effect of above-mentioned transducer air conditioning.

Further, step S3 includes:

If variable frequency pump is reduced under high frequency mode with the aperture of the operation of the first raising frequency rate raising frequency and electric expansion valve, It is reduced to variable frequency pump after the first setpoint frequency again with the operation of the second raising frequency rate raising frequency, wherein the first raising frequency rate is greater than Second raising frequency rate.

In above-mentioned steps, variable frequency pump with the operation of the first raising frequency rate raising frequency, then shows current under high frequency mode In the situation that exchanges heat, heat that absorptive condenser sheds, water in the branch to exchange heat with condenser flow be gradually increased Variation tendency under can meet the heat exchange demand of condenser.At this point, if room temperature has reached the established standards of user, The compressor frequency reducing of air conditioner is run, and the aperture of electric expansion valve reduces, then the flow of its condenser reduces, the heat exchange of condenser Demand reduces.In this case, based on the frequency variation pattern in the current operating scheme of variable frequency pump, the frequency of variable frequency pump is lowered Certain amplitude and the raising frequency rate for reducing variable frequency pump, to adapt to the heat exchange demand of the condenser after frequency reducing.Wherein, raising frequency Frequency ramp-up rate when what rate represented is the operation of variable frequency pump raising frequency.Above-mentioned first raising frequency rate and the second raising frequency rate can be with It is set or is adjusted according to the practical operation situation of transducer air conditioning.

Further, the step for " being reduced to variable frequency pump after the first setpoint frequency again with the operation of the second raising frequency rate raising frequency " Suddenly include:

After so that variable frequency pump is run the first preset time with present operating frequency, it is reduced to the first setpoint frequency and just with second The operation of raising frequency rate raising frequency.

In above-mentioned steps, after reducing due to the aperture of transducer air conditioning frequency reducing operation, electric expansion valve, although condenser Heat exchange slump in demand certain amplitude, but initial stage lowered in its demand that exchanges heat, condenser exchanges heat before flow becomes smaller When a large amount of waste heats for generating absorbed completely by the water in heat exchange branch not yet.At this point, if lowering the operation of variable frequency pump immediately Frequency, the flow for reducing water in heat exchange branch, may result in the waste heat around condenser and are difficult quickly to be transferred to heat exchange branch In the water on road, to make condenser can be in the higher environment of ambient temperature, influence condenser within a very long time Change thermal velocity, and then influences the normal operation of air conditioner.In consideration of it, if making it first before variable frequency pump frequency reducing currently to run frequency Rate operation a period of time, first a large amount of waste heats of condenser quickly can be absorbed, then needed further according to the subsequent heat exchange of condenser Seek the mobility status of the water of adjustment heat exchange branch, thus solve the problems, such as it is above-mentioned it is possible that condenser heat exchange it is abnormal. Wherein, above-mentioned first setpoint frequency can be according to the practical reduction amplitude of electronic expansion valve opening, the operation ring of transducer air conditioning The temperature etc. in border is set, as long as the first setpoint frequency of setting does not influence the normal heat exchange of condenser.First is default Time can be reduced according to electronic expansion valve opening before the practical heat exchange demand of condenser set.

In alternatively possible embodiment, step S3 includes:

If variable frequency pump is run under low frequency mode and the aperture of electric expansion valve reduces, variable frequency pump is made to be reduced to the The operation of two setpoint frequencies.

In above-mentioned steps, temperature has reached the situation of the established standards of user, transducer air conditioning frequency reducing operation indoors Under, the aperture of electric expansion valve reduces, and the flow of refrigerant reduces, and the heat exchange demand of condenser weakens.At this point, reducing variable frequency pump It is run to the second setpoint frequency, the heat exchange demand after variation to adapt to condenser.Wherein, the second setpoint frequency can basis Practical heat exchange demand after condenser variation is set.

Further, the step of " make variable frequency pump be reduced to the second setpoint frequency run " includes:

After so that variable frequency pump is run the second preset time with present operating frequency, variable frequency pump is just made to be reduced to the second setpoint frequency Operation.

In above-mentioned steps, before running variable frequency pump frequency reducing, the second preset time is first run with current operation frequency, with Just frequency reducing is carried out again after having absorbed a large amount of waste heats of condenser, avoids condenser heat exchange bad.Similarly, above-mentioned second setting frequency Rate and the second preset time can also be set according to the actual motion demand of transducer air conditioning, with the first setpoint frequency and There is no any incidence relation or precedence relationships between first preset time, and " first ", " second " in this are merely to right Setpoint frequency and preset time under different implement scenes make differentiation.

Preferably, before the frequency mode of variable frequency pump " obtain " the step of, control method of the invention further include:

In the case of variable frequency pump brings into operation, the valve opening and closing information of valve member is obtained；

According to valve opening and closing information, the present branch operating condition in heat exchange water route is determined；

The step of " frequency mode for obtaining the variable frequency pump " includes:

According to present branch operating condition, the frequency mode of variable frequency pump is determined.

In above-mentioned steps, the valve opening and closing information of valve member specifically refers to opening for each valve that valve member includes Close situation.The acquisition modes of the valve opening and closing situation are not to limit, for example, can directly be detected by detecting element each The closing situation of valve can also be that the control module of above-mentioned transducer air conditioning exists to be aggregated into above-mentioned valve opening and closing information The information for having generated and having stored after having adjusted valve switch state every time.

" present branch operating condition " include currently be condenser exchanged heat, the specific branch of absorptive condenser heat The operating status (in such as continuous service, i.e. by the state of the water in switching state and the branch) of road and the branch, so as to In conjunction with current operating status determine the heat exchange situation of condenser whether normally, can satisfy the normal operation demand of air conditioner, And the running frequency by controlling variable frequency pump controls the mobility status of the water in heat exchange branch, to the heat exchange situation of condenser into Row regulation.In the case of determining the current frequency mode of variable frequency pump, the frequency mode can be obtained.

Further, the step of above-mentioned " according to present branch operating condition, determining the frequency mode of variable frequency pump " includes:

If the water route that exchanges heat obtains the temperature parameter of the water in the first heat exchange branch with the first heat exchange branch operation；

If temperature parameter increase and raised temperature parameter be less than set temperature, make variable frequency pump under high frequency mode with The operation of first raising frequency rate raising frequency.

Water in above-mentioned steps, when the situation that the water route that exchanges heat is run with the first heat exchange branch, in the first heat exchange branch Flowing through condenser each time can the heat that sheds of absorptive condenser.Water first heat exchange branch internal circulation flow situation Under, the temperature of water constantly increases.It follows that obtaining water therein when the first heat exchange branch exchanges heat to condenser Temperature parameter, can know the heated condition of water, to judge subsequent whether need to continue whithin a period of time to heat the branch Interior water determines whether the demand with switching heat exchange branch, to be sentenced according to specific demand for heat change conditions The operation demand of disconnected variable frequency pump, and then determine the running frequency of variable frequency pump；It is increased in temperature parameter and raised temperature parameter is small In the case of set temperature, shows that the water in the first heat exchange branch is not up to the standard for stopping heating, do not there is switching yet currently Water in the demand of branch, the first heat exchange branch still needs to heat.But since the temperature of the water in the first heat exchange branch is gradually climbed Rise, cause the temperature gap of water and condenser locations in the first heat exchange branch to become smaller, first heat exchange branch exchange capability of heat by Decrescence weak, therefore, in order to guarantee that condenser normally exchanges heat, then making variable frequency pump, raising frequency is run under high frequency mode, gradually to add Its strong facilitation for circulating generation to water in the first heat exchange branch, makes to flow through condenser in the first heat exchange branch The flow of water becomes larger.Wherein, set temperature is the temperature of the water after the completion of the heating that sets according to the demand for heat of water.Example Such as, the water for being 50 DEG C if necessary to maximum temperature, then its temperature parameter in cyclic process of the water in the first heat exchange branch rises The switching demand of heat exchange branch is just had to 50 DEG C, 50 DEG C are then set temperature at this time.

Further, in the case of raising frequency is run variable frequency pump under high frequency mode, control method of the invention is also wrapped It includes:

If variable frequency pump raising frequency makes heat-exchanging water routing the first heat exchange branch switch to the second heat exchange to maximum operation frequency Branch, while variable frequency pump being made to switch to low frequency mode operation by high frequency mode.

In above-mentioned steps, if variable frequency pump raising frequency shows variable frequency pump to water in the first heat exchange to maximum operation frequency The facilitation for circulating generation in branch has reached most by force, and the flow for flowing through the water of condenser has reached maximum.This When, for the temperature of the water in the first heat exchange branch also in soaring state, the exchange capability of heat of the first heat exchange branch can be in variable frequency pump Operation power gradually weakens in the case of having reached the maximum.In order to guarantee the normal heat exchange of condenser, then need to make the water route that exchanges heat Second heat exchange branch is switched to by the first heat exchange branch, while variable frequency pump being made to switch to low frequency mode operation by high frequency mode, with Just match with water temperature is constant, exchange capability of heat is stable the second heat exchange branch.

It is above-mentioned " according to present branch operating condition, to determine the frequency mould of variable frequency pump in alternatively possible embodiment The step of formula " further include:

If the temperature parameter of the water in the first heat exchange water route is equal to set temperature, make heat-exchanging water routing the first heat exchange branch Road switches to the second heat exchange branch, while runs variable frequency pump with low frequency mode.

When the first heat exchange branch exchanges heat to condenser, if the temperature parameter of the water in the first heat exchange branch is equal to Set temperature then shows that the hot water heating to exchange heat in water route finishes.At this time, it may be necessary to which the branch to exchange heat with condenser is switched To the second heat exchange branch, so that the first heat exchange branch is out of service, so that the water energy in the first heat exchange branch be made enough to flow into water storage Device is kept the temperature.In the case of the branch that exchanges heat is switched to the second heat exchange branch, water is supplied in one end of the second heat exchange branch, Water in branch flows through after condenser is exchanged heat from the discharge ends outflow of the second heat exchange branch.That is, the second heat exchange Water in branch is not to circulate, and the initial temperature for flowing through the water of condenser is always to supply the temperature of water, and second changes The exchange capability of heat of hot branch is more stable.At this point, running variable frequency pump with low frequency mode, so as in the heat exchange need for meeting condenser The supply energy source (such as electric energy) of variable frequency pump is saved while asking.

It is above-mentioned " according to present branch operating condition, determining the running frequency of variable frequency pump " in the case of another is possible The step of include:

If the water route that exchanges heat runs variable frequency pump with low frequency mode with the second heat exchange branch operation.

In above-mentioned steps, finishes, becomes in the case of user does not have hot water supply requirement, or hot water is heated In the case of frequency air conditioner has switched heat exchange branch before last time end of run, when variable frequency pump brings into operation, exchange heat branch It may be directly with the second heat exchange branch operation.At this point, running variable frequency pump with the low frequency mode to match with the second heat exchange branch .

In a preferred embodiment, control method of the invention specifically includes the following steps:

In the case of variable frequency pump brings into operation, the valve opening and closing information of valve member is obtained；

According to valve opening and closing information, the present branch operating condition in heat exchange water route is determined；

In the case of the water route that exchanges heat is with the first heat exchange branch operation, the temperature ginseng of the water in the first heat exchange branch is obtained Number；

If temperature parameter increase and raised temperature parameter be less than set temperature, make variable frequency pump under high frequency mode with The operation of first raising frequency rate raising frequency；

Under high frequency mode in the case of raising frequency operation, if variable frequency pump raising frequency makes heat-exchanging water to maximum operation frequency Routing the first heat exchange branch switches to the second heat exchange branch, while variable frequency pump being made to switch to low frequency mode operation by high frequency mode；

If the temperature parameter of the water in the first heat exchange water route is equal to set temperature, make heat-exchanging water routing the first heat exchange branch Road switches to the second heat exchange branch, while runs variable frequency pump with low frequency mode；

In the case of the water route that exchanges heat is with the second heat exchange branch operation, run variable frequency pump with low frequency mode；

In the case of determining the frequency mode of variable frequency pump, the frequency mode of variable frequency pump is obtained；

Obtain the aperture situation of change of electric expansion valve；

Under if variable frequency pump is subtracted under high frequency mode with the aperture of the operation of the first raising frequency rate raising frequency and electric expansion valve, Then make variable frequency pump with present operating frequency run the first preset time after, then be reduced to the first setpoint frequency and with the second raising frequency speed Rate raising frequency operation, wherein the first raising frequency rate is greater than the second raising frequency rate；

If variable frequency pump is run under low frequency mode and the aperture of electric expansion valve reduces, make variable frequency pump with current work After working frequency runs the second preset time, then the second setpoint frequency is reduced to run.

It is the first operation curve figure (dotted line in figure of the control method of transducer air conditioning of the invention referring again to Fig. 2, Fig. 2 For the T/F change curve of variable frequency pump, solid line is the when m- aperture change curve of electric expansion valve, wherein the longitudinal axis it is upper Half part gradually rises from zero supreme frequency, and longitudinal axis lower half portion is gradually increased from zero to lower aperture).As shown in Fig. 2, in this hair In a kind of bright possible embodiment, the operational process of the variable frequency pump of transducer air conditioning of the invention is as follows:

In the case of transducer air conditioning brings into operation, electric expansion valve closes valve to the first aperture by maximum opening, so as to Air conditioner is set quickly to form pressure difference, to realize the light-load starting of air conditioner.Then, then keep electric expansion valve fast by the first aperture Speed increases to the second aperture (the work aperture that the aperture is electric expansion valve when air conditioner normally freezes).Meanwhile in frequency conversion sky It adjusts device to bring into operation and after a period of time, variable frequency pump is made to bring into operation, it is sharp when not flowed so as to the water in the branch that exchanges heat With the heat of the water absorptive condenser of condenser locations close in the hot branch, the energy is saved；After variable frequency pump brings into operation, Variable frequency pump is in highest frequency achieved of last operation phase when rapid raising frequency to transducer air conditioning last time runs；Obtain valve group The valve opening and closing information of part is determining heat exchange water route with the first heat exchange branch operation and the first heat exchange branch by valve opening and closing information When the water on road is not up to set temperature, variable frequency pump is made to start raising frequency operation under high frequency mode with the first raising frequency rate；Indoors When temperature reaches temperature set by user, transducer air conditioning is run with low frequency mode, compressor frequency reducing operation, electric expansion valve by Second aperture is reduced to third aperture (first the second aperture of aperture < third aperture <).In this case, make variable frequency pump first with Present operating frequency runs the first preset time (horizontal segment i.e. since the m point position in Fig. 2；First preset time can be with It is 2min), then be reduced to after the first setpoint frequency with the operation of the second raising frequency rate raising frequency；In the raising frequency operational process of variable frequency pump In, the water in the first heat exchange branch reaches set temperature or the running frequency of variable frequency pump reaches maximum (i.e. n point in Fig. 2 Set), heat exchange water route switches to the operation of the second heat exchange branch, and variable frequency pump switches to low frequency mode, under low frequency mode with it is lower, Fixed working frequency operation, until transducer air conditioning is closed.

It is the first operation curve figure (dotted line in figure of the control method of transducer air conditioning of the invention referring again to Fig. 3, Fig. 3 For the T/F change curve of variable frequency pump, solid line is the when m- aperture change curve of electric expansion valve, wherein the longitudinal axis it is upper Half part gradually rises from zero supreme frequency, and longitudinal axis lower half portion is gradually increased from zero to lower aperture).As shown in figure 3, in this hair In bright alternatively possible embodiment, the operational process of the variable frequency pump of transducer air conditioning of the invention is as follows:

In the case of transducer air conditioning brings into operation, electric expansion valve closes valve to the first aperture by maximum opening, so as to Air conditioner is set quickly to form pressure difference, to realize the light-load starting of air conditioner.Then, then keep electric expansion valve fast by the first aperture Speed increases to the second aperture (the work aperture that the aperture is electric expansion valve when air conditioner normally freezes).Meanwhile in frequency conversion sky It adjusts device to bring into operation and after a period of time, variable frequency pump is made to bring into operation, it is sharp when not flowed so as to the water in the branch that exchanges heat With the heat of the water absorptive condenser of condenser locations close in the hot branch, the energy is saved；After variable frequency pump brings into operation, Variable frequency pump is in highest frequency achieved of last operation phase when rapid raising frequency to transducer air conditioning last time runs；Obtain valve group The valve opening and closing information of part is determining heat exchange water route with the first heat exchange branch operation and the first heat exchange branch by valve opening and closing information When the water on road is not up to set temperature, variable frequency pump is made to start raising frequency operation under high frequency mode with the first raising frequency rate；In frequency conversion In the raising frequency operational process of pump, the water in the first heat exchange branch reaches set temperature or the running frequency of variable frequency pump reaches most (i.e. p point position in Fig. 2) greatly, heat exchange water route switch to the operation of the second heat exchange branch, and variable frequency pump switches to low frequency mode, low With lower, fixed working frequency operation under frequency mode；When temperature reaches temperature set by user indoors, transducer air conditioning It is run with low frequency mode, compressor frequency reducing operation, electric expansion valve is reduced to third aperture (the first aperture < the by the second aperture Three the second apertures of aperture <).In this case, variable frequency pump is made first to run the second preset time (i.e. from Fig. 2 with present operating frequency In the horizontal segment that starts of q point position；Second preset time can be 2min), then the second setpoint frequency is reduced to run, until Transducer air conditioning is closed.

In conclusion the control method of transducer air conditioning of the invention can be true by the valve opening and closing information of valve member Surely the present branch operating condition in heat exchange water route.According to different branch operating condition, the running frequency of variable frequency pump is carried out true It is fixed.By the converting operation of variable frequency pump, the different operating conditions of heat exchange branch are realized to cold when can run for air conditioner The heat exchange of condenser, in the basic operation demand and hot water heating demand for meeting air conditioner of the invention, to realize Waste Heat Recovery While further promote the energy-saving effect of the air conditioner.On this basis, control method of the invention can also be according to frequency conversion The current frequency mode of pump and the aperture situation of change of electric expansion valve, determine whether variable frequency pump needs frequency reducing, and in frequency conversion In the case of pump needs frequency reducing, corresponding frequency reducing scheme is executed for the different frequency mode of variable frequency pump, thus to air conditioner Energy-saving effect optimizes promotion again.

So far, it has been combined preferred embodiment shown in the drawings and describes technical solution of the present invention, still, this field Technical staff is it is easily understood that protection scope of the present invention is expressly not limited to these specific embodiments.Without departing from this Under the premise of the principle of invention, those skilled in the art can make equivalent change or replacement to the relevant technologies feature, these Technical solution after change or replacement will fall within the scope of protection of the present invention.