CN118149541A - Method and device for non-stop operation of constant temperature and humidity box and constant temperature and humidity box - Google Patents

Abstract

The application relates to the technical field of constant temperature and humidity boxes, and discloses a method for operating a constant temperature and humidity box without shutdown, which comprises the following steps: when the constant temperature and humidity box operates, the control opening degree of the refrigeration expansion valve is obtained; when the control opening degree of the refrigeration expansion valve is smaller than the protection opening degree, the actual opening degree of the refrigeration expansion valve is increased to the protection opening degree; the opening degree of the heating device is increased. When the temperature in the constant temperature and humidity box is more and more close to the set temperature, the situation that redundant refrigerant at the outlet of the condenser is increased can be relieved by controlling the opening of the refrigeration expansion valve to be larger than the protection opening, so that the influence on refrigerant recharging is reduced, and the stable operation of the constant temperature and humidity box is ensured. And the extra cold quantity brought by the protection opening is counteracted by increasing the opening of the heating device, so that the temperature regulation accuracy of the constant temperature and humidity box is improved. The application also discloses a device for the non-stop operation of the constant temperature and humidity box and the constant temperature and humidity box.

Description

Method and device for non-stop operation of constant temperature and humidity box and constant temperature and humidity box

Technical Field

The application relates to the technical field of constant temperature and humidity boxes, in particular to a method and a device for operating the constant temperature and humidity box without stopping the machine, and the constant temperature and humidity box.

Background

At present, wide temperature range control requires that accurate temperature control can be realized in a lower temperature range and a higher temperature range, and a fixed-frequency compressor generally has higher refrigerating capacity and stability under low-temperature and high-temperature working conditions. Therefore, the constant temperature and humidity box usually adopts a high-power fixed-frequency compressor to carry out wide-temperature-range refined temperature control. In practical application, the high-power fixed-frequency compressor needs to be protected for at least 3min between start and stop, and in some scenes with strict temperature control requirements, when the temperature in the constant-temperature constant-humidity box reaches a set temperature value, the compressor can be stopped for protection, and the temperature control can be possibly influenced. The compressor is required to run continuously, redundant refrigerant is usually recharged from the outlet of the condenser to the compressor by adopting a bypass mode, but the upper limit value of the reflux refrigerant which can be borne by the bypass branch is always fixed, and the opening of the refrigeration expansion valve is reduced along with the fact that the temperature in the tank is close to a set temperature value, so that the redundant refrigerant cannot be recharged to the compressor from the outlet of the condenser in time, and the compressor is still stopped for a long time for protection. The related art discloses a method for automatically adjusting the refrigerating capacity, wherein a controller controls the opening degree of a pressure regulating valve to be reduced or fully closed, and simultaneously, an electromagnetic valve on an adjusting branch is opened, at the moment, part or all of refrigerant flows out of a condenser and then enters a subcooler through the adjusting branch, and is evaporated into gas in the subcooler and then returns to a compressor, so that the refrigerant flowing through an evaporator can be reduced, the refrigerating capacity is reduced, the further reduction of the temperature is avoided, and the temperature is ensured to be maintained near a preset temperature value. On the premise of no stop, the automatic adjustment of the refrigerating capacity of the fixed-frequency compressor is realized, and the occurrence of cold-hot alternation is avoided.

In the process of implementing the embodiments of the present disclosure, it is found that at least the following problems exist in the related art:

the refrigerant is transferred through the bypass loop by adopting the related technology, so that the shutdown of the compressor is avoided, and the stable operation of the constant temperature and humidity box is ensured to a certain extent. However, in the practical application process, especially under the condition that the compressor is fixed frequency, as the temperature in the constant temperature and humidity box approaches the set temperature, the refrigerating capacity requirement can be gradually reduced, the opening degree of the refrigerating expansion valve can be smaller and smaller, redundant refrigerants at the outlet of the condenser are more and more, and the reflux refrigerants carried by the bypass loop are limited, so that the bypass loop cannot recharge all refrigerants into the compressor from the outlet of the condenser in time, the compressor is possibly stopped, the running stability of the constant temperature and humidity box is influenced, and the temperature regulation accuracy of the constant temperature and humidity box is reduced.

It should be noted that the information disclosed in the above background section is only for enhancing understanding of the background of the application and thus may include information that does not form the prior art that is already known to those of ordinary skill in the art.

Disclosure of Invention

The following presents a simplified summary in order to provide a basic understanding of some aspects of the disclosed embodiments. This summary is not an extensive overview, and is intended to neither identify key/critical elements nor delineate the scope of such embodiments, but is intended as a prelude to the more detailed description that follows.

The embodiment of the disclosure provides a method and a device for non-stop operation of a constant temperature and humidity box, and the constant temperature and humidity box, so that the influence of the increase of redundant refrigerant at the outlet of a condenser on a refrigerant recharging compressor is reduced under the condition that the temperature in the constant temperature and humidity box is more and more close to a set temperature, the stable operation of the constant temperature and humidity box is ensured, and the temperature regulation accuracy of the constant temperature and humidity box is improved.

In some embodiments, the constant temperature and humidity box comprises a heating device, and a fixed-frequency compressor, a condenser, a refrigeration expansion valve and an evaporator which are sequentially connected, wherein a bypass branch connected with an inlet pipeline of the compressor is arranged on an outlet pipeline of the condenser; the method comprises the following steps: when the constant temperature and humidity box operates, the control opening degree of the refrigeration expansion valve is obtained; when the control opening degree of the refrigeration expansion valve is smaller than the protection opening degree, the actual opening degree of the refrigeration expansion valve is increased to the protection opening degree; the opening degree of the heating device is increased.

Optionally, increasing the opening of the heating device includes: determining a heat compensation opening according to the protection opening; and controlling the heating device to increase the heat compensation opening degree.

Optionally, determining the heat compensation opening according to the protection opening includes: calculating an opening difference value between the protection opening and the control opening; and determining the heat compensation opening according to the opening difference value.

Optionally, determining the heat compensation opening according to the opening difference value includes: determining extra cooling capacity corresponding to the opening difference value according to a preset first corresponding relation; and determining the heat compensation opening according to the extra cold quantity.

Optionally, determining the heat compensation opening according to the additional cooling capacity includes: determining a heat compensation opening according to the related parameters heated by the heating device; wherein the associated parameters to be heated by the heating means comprise additional cooling capacity, environmental parameters and/or heating power of the heating means.

Optionally, determining the heat compensation opening according to the associated parameter heated by the heating device includes: and determining the heat compensation opening corresponding to the associated parameter according to a preset second corresponding relation.

Optionally, controlling the heating device to increase the heat compensation opening comprises: the working time of the heating device is prolonged; and/or increasing the power of the heating means; the heat compensation opening degree comprises working time and/or power.

Optionally, the protection opening is determined as follows: and determining the protection opening according to the power of the compressor and the upper limit value of the bypass branch capable of bearing the backflow refrigerant.

In some embodiments, the apparatus comprises: a processor and a memory storing program instructions, said processor being configured to perform the method for non-stop operation of the oven when executing said program instructions.

In some embodiments, the constant temperature and humidity cabinet comprises:

The constant temperature and humidity box body comprises a heating device, a fixed-frequency compressor, a condenser, a refrigeration expansion valve and an evaporator which are sequentially connected, wherein a bypass branch connected with an inlet pipeline of the compressor is arranged on an outlet pipeline of the condenser; and

The device for the non-stop operation of the constant temperature and humidity box is arranged on the constant temperature and humidity box body.

The method and the device for non-stop operation of the constant temperature and humidity box, and the constant temperature and humidity box provided by the embodiment of the disclosure can realize the following technical effects:

And when the constant temperature and humidity box operates, the control opening degree of the refrigeration expansion valve is obtained. And when the control opening degree of the refrigeration expansion valve is smaller than the protection opening degree, increasing the actual opening degree of the refrigeration expansion valve to the protection opening degree, and increasing the opening degree of the heating device. When the temperature in the constant temperature and humidity box is more and more close to the set temperature, the situation that redundant refrigerant at the outlet of the condenser is increased can be relieved by controlling the opening of the refrigeration expansion valve to be larger than the protection opening, so that the influence on refrigerant recharging is reduced, and the stable operation of the constant temperature and humidity box is ensured. And the extra cold quantity brought by the protection opening is counteracted by increasing the opening of the heating device, so that the temperature regulation accuracy of the constant temperature and humidity box is improved.

The foregoing general description and the following description are exemplary and explanatory only and are not restrictive of the application.

Drawings

One or more embodiments are illustrated by way of example and not limitation in the figures of the accompanying drawings, in which like references indicate similar elements, and in which like reference numerals refer to similar elements, and in which:

FIG. 1 is a schematic illustration of a method for non-stop operation of a constant temperature and humidity cabinet provided by an embodiment of the present disclosure;

FIG. 2 is a schematic illustration of another method for non-stop operation of a constant temperature and humidity cabinet provided by an embodiment of the present disclosure;

FIG. 3 is a schematic illustration of another method for non-stop operation of a constant temperature and humidity cabinet provided by an embodiment of the present disclosure;

FIG. 4 is a schematic illustration of another method for non-stop operation of a constant temperature and humidity cabinet provided by an embodiment of the present disclosure;

FIG. 5 is a schematic illustration of an apparatus for non-stop operation of a constant temperature and humidity cabinet provided in accordance with an embodiment of the present disclosure;

Fig. 6 is a schematic diagram of a constant temperature and humidity cabinet provided by an embodiment of the present disclosure.

Detailed Description

So that the manner in which the features and techniques of the disclosed embodiments can be understood in more detail, a more particular description of the embodiments of the disclosure, briefly summarized below, may be had by reference to the appended drawings, which are not intended to be limiting of the embodiments of the disclosure. In the following description of the technology, for purposes of explanation, numerous details are set forth in order to provide a thorough understanding of the disclosed embodiments. However, one or more embodiments may still be practiced without these details. In other instances, well-known structures and devices may be shown simplified in order to simplify the drawing.

The terms first, second and the like in the description and in the claims of the embodiments of the disclosure and in the above-described figures are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate in order to describe embodiments of the present disclosure. Furthermore, the terms "comprise" and "have," as well as any variations thereof, are intended to cover a non-exclusive inclusion.

The term "plurality" means two or more, unless otherwise indicated.

In the embodiment of the present disclosure, the character "/" indicates that the front and rear objects are an or relationship. For example, A/B represents: a or B.

The term "and/or" is an associative relationship that describes an object, meaning that there may be three relationships. For example, a and/or B, represent: a or B, or, A and B.

The term "corresponding" may refer to an association or binding relationship, and the correspondence between a and B refers to an association or binding relationship between a and B.

In the embodiment of the disclosure, the intelligent home appliance refers to a home appliance formed after a microprocessor, a sensor technology and a network communication technology are introduced into the home appliance, and has the characteristics of intelligent control, intelligent sensing and intelligent application, the operation process of the intelligent home appliance often depends on the application and processing of modern technologies such as the internet of things, the internet and an electronic chip, for example, the intelligent home appliance can realize remote control and management of a user on the intelligent home appliance by connecting the electronic appliance.

In the disclosed embodiment, the terminal device refers to an electronic device with a wireless connection function, and the terminal device can be in communication connection with the intelligent household electrical appliance through connecting with the internet, or can be in communication connection with the intelligent household electrical appliance through Bluetooth, wifi and other modes. In some embodiments, the terminal device is, for example, a mobile device, a computer, or an in-vehicle device built into a hover vehicle, etc., or any combination thereof. The mobile device may include, for example, a cell phone, smart home device, wearable device, smart mobile device, virtual reality device, etc., or any combination thereof, wherein the wearable device includes, for example: smart watches, smart bracelets, pedometers, etc.

At present, wide temperature range control requires that accurate temperature control can be realized in a lower temperature range and a higher temperature range, and a fixed-frequency compressor generally has higher refrigerating capacity and stability under low-temperature and high-temperature working conditions. Therefore, the constant temperature and humidity box usually adopts a high-power fixed-frequency compressor to carry out wide-temperature-range refined temperature control. In practical application, the high-power fixed-frequency compressor needs to be protected for at least 3min between start and stop, and in some scenes with strict temperature control requirements, when the temperature in the constant-temperature constant-humidity box reaches a set temperature value, the compressor can be stopped for protection, and the temperature control can be possibly influenced. The compressor is required to run continuously, redundant refrigerant is usually recharged from the outlet of the condenser to the compressor by adopting a bypass mode, but the upper limit value of the reflux refrigerant which can be borne by the bypass branch is always fixed, and the opening of the refrigeration expansion valve is reduced along with the fact that the temperature in the tank is close to a set temperature value, so that the redundant refrigerant cannot be recharged to the compressor from the outlet of the condenser in time, and the compressor is still stopped for a long time for protection. The related art discloses a method for automatically adjusting the refrigerating capacity, wherein a controller controls the opening degree of a pressure regulating valve to be reduced or fully closed, and simultaneously, an electromagnetic valve on an adjusting branch is opened, at the moment, part or all of refrigerant flows out of a condenser and then enters a subcooler through the adjusting branch, and is evaporated into gas in the subcooler and then returns to a compressor, so that the refrigerant flowing through an evaporator can be reduced, the refrigerating capacity is reduced, the further reduction of the temperature is avoided, and the temperature is ensured to be maintained near a preset temperature value. On the premise of no stop, the automatic adjustment of the refrigerating capacity of the fixed-frequency compressor is realized, and the occurrence of cold-hot alternation is avoided. The refrigerant is transferred through the bypass loop by adopting the related technology, so that the stop of the compressor is avoided, and the stable operation of the constant temperature and humidity box of the refrigeration equipment is ensured to a certain extent. However, in the practical application process, especially under the condition that the compressor is fixed frequency, as the temperature in the constant temperature and humidity box of the space regulated by the refrigeration equipment approaches the set temperature, the refrigerating capacity requirement can be gradually reduced, the opening degree of the refrigeration expansion valve can be smaller and smaller, redundant refrigerants at the outlet of the condenser are more and more, and the reflux refrigerants borne by the bypass loop are limited, so that the bypass loop cannot recharge all refrigerants from the outlet of the condenser to the compressor in time, thereby possibly causing the shutdown of the compressor, affecting the running stability of the constant temperature and humidity box of the refrigeration equipment and reducing the temperature regulation accuracy of the constant temperature and humidity box of the refrigeration equipment.

The embodiment of the disclosure discloses a constant temperature and humidity box, which comprises a heating device and a refrigerating system. The refrigerating system comprises a compressor, a condenser, a refrigerating expansion valve and an evaporator which are connected in sequence. And a bypass branch connected with an inlet pipeline of the compressor is arranged on an outlet pipeline of the condenser and used for recharging redundant refrigerant in front of the outlet of the condenser and the refrigeration expansion valve to the compressor, so that the compressor is prevented from stopping. The heating device is used for providing heat for the box body, so that the constant temperature and humidity box is assisted to realize accurate control of the temperature in the box. The constant temperature and humidity box also comprises a processor, wherein the processor is electrically connected with the electric components and used for controlling the electric components to act.

Fig. 1 to 4 are schematic diagrams of methods for non-stop operation of a constant temperature and humidity cabinet according to embodiments of the present disclosure, where any of the following methods may be performed in the constant temperature and humidity cabinet, or in a server or terminal device communicatively connected to the constant temperature and humidity cabinet. In the embodiment of the present disclosure, a description is made of a solution using a constant temperature and humidity box as an execution body.

Based on the above structure of the constant temperature and humidity box, as shown in fig. 1, an embodiment of the disclosure provides a method for operating the constant temperature and humidity box without shutdown, including:

And S01, when the constant temperature and humidity box operates, the constant temperature and humidity box acquires the control opening degree of the refrigeration expansion valve.

And S02, when the control opening degree of the refrigeration expansion valve is smaller than the protection opening degree, the constant temperature and humidity box increases the actual opening degree of the refrigeration expansion valve to the protection opening degree.

S03, increasing the opening degree of the heating device by the constant temperature and humidity box.

Wherein, the operation of the constant temperature and humidity box comprises a refrigeration mode and a heating mode. When the heating mode is operated, the control opening degree of the refrigeration expansion valve is always in a stage smaller than the protection opening degree, so that additional cold energy is always generated. Therefore, in the heating mode, the constant temperature and humidity box needs to increase the opening degree based on the current opening degree of the heating device to offset the extra cold energy generated by the protection opening degree. The control opening degree refers to the theoretical opening degree which the control refrigeration expansion valve should reach in order to meet the current temperature requirement of the constant temperature and humidity box. The protection opening refers to the minimum opening set for avoiding the stop of the compressor and the refrigeration expansion valve, and can enable the backflow refrigerant to be in the supportable range of the bypass branch.

By adopting the method for the non-stop operation of the constant temperature and humidity box, which is provided by the embodiment of the disclosure, when the constant temperature and humidity box is operated, the control opening degree of the refrigeration expansion valve is obtained. When the control opening degree of the refrigeration expansion valve is smaller than the protection opening degree, the temperature of the space regulated by the constant temperature and humidity box is closer to the set temperature, and the required cooling capacity is smaller, so that the control opening degree of the refrigeration expansion valve is smaller. At this time, the redundant refrigerant increases along with the decrease of the opening degree of the refrigeration expansion valve, so that the quantity of the redundant refrigerant exceeds the upper limit of the reflux refrigerant which can be borne by the bypass branch, and the compressor is stopped. Therefore, the constant temperature and humidity box increases the actual opening degree of the refrigeration expansion valve to the protection opening degree, so that part of redundant refrigerant flows from the refrigeration expansion valve to the evaporator, the pressure of the bypass branch for recharging the redundant refrigerant to the compressor can be relieved, and the shutdown probability of the compressor is reduced. However, the protection opening is larger than the control opening, so that the temperature regulation of the constant temperature and humidity box generates extra cold, and therefore, the opening of the heating device is increased by the constant temperature and humidity box so as to offset the extra cold caused by the protection opening, and the temperature regulation accuracy of the constant temperature and humidity box is ensured. When the temperature in the constant temperature and humidity box is more and more close to the set temperature, the situation that redundant refrigerant at the outlet of the condenser is increased can be relieved by controlling the opening of the refrigeration expansion valve to be larger than the protection opening, so that the influence on refrigerant recharging is reduced, and the stable operation of the constant temperature and humidity box is ensured. And the extra cold quantity brought by the protection opening is counteracted by increasing the opening of the heating device, so that the temperature regulation accuracy of the constant temperature and humidity box is improved.

Based on the above structure of the constant temperature and humidity box, as shown in fig. 2, an embodiment of the disclosure provides a method for operating the constant temperature and humidity box without shutdown, including:

And S01, when the constant temperature and humidity box operates, the constant temperature and humidity box acquires the control opening degree of the refrigeration expansion valve.

And S02, when the control opening degree of the refrigeration expansion valve is smaller than the protection opening degree, the constant temperature and humidity box increases the actual opening degree of the refrigeration expansion valve to the protection opening degree.

S21, determining the heat compensation opening degree by the constant temperature and humidity box according to the protection opening degree.

S22, controlling the heating device to increase the heat compensation opening degree by the constant temperature and humidity box.

By adopting the method for the non-stop operation of the constant temperature and humidity box, which is provided by the embodiment of the disclosure, the constant temperature and humidity box determines the heat compensation opening according to the protection opening, and controls the heating device to increase the heat compensation opening, so that the heat compensation opening is matched with the protection opening, and the accuracy of the opening of the heating device is improved.

Based on the above structure of the constant temperature and humidity box, as shown in fig. 3, an embodiment of the disclosure provides a method for operating the constant temperature and humidity box without shutdown, including:

And S01, when the constant temperature and humidity box operates, the constant temperature and humidity box acquires the control opening degree of the refrigeration expansion valve.

And S02, when the control opening degree of the refrigeration expansion valve is smaller than the protection opening degree, the constant temperature and humidity box increases the actual opening degree of the refrigeration expansion valve to the protection opening degree.

S31, calculating an opening difference value between the protection opening and the control opening by the constant temperature and humidity box.

S32, determining the heat compensation opening degree by the constant temperature and humidity box according to the opening degree difference value.

S22, controlling the heating device to increase the heat compensation opening degree by the constant temperature and humidity box.

By adopting the method for the non-stop operation of the constant temperature and humidity box, which is provided by the embodiment of the disclosure, as the control opening is smaller, the difference value between the control opening and the protection opening is larger, and the generated extra cooling capacity is more. The opening difference can thus characterize how much additional cold is generated. The constant temperature and humidity box calculates the opening difference between the protection opening and the control opening, and determines the heat compensation opening according to the opening difference, so that the heat compensation opening is matched with the additional cold quantity currently generated, and the control accuracy of the heating device is improved.

Optionally, the constant temperature and humidity box determines the heat compensation opening according to the opening difference value, including: the constant temperature and humidity box determines additional cooling capacity corresponding to the opening difference value according to a preset first corresponding relation; and determining the heat compensation opening degree of the constant temperature and humidity box according to the extra cold quantity.

The first correspondence relationship may specifically be determined in any manner, as long as the trend that the larger the opening difference is, the larger the additional cooling capacity is met. The first correspondence is determined, for example, by means of mathematical calculations, look-up tables, developer settings or user settings. In the practical application process, the heat compensation opening degree can also be calculated by a mathematical method, for example, y= (-Hc/Fc) x+fc is calculated; y is the heat compensation opening degree, x is the control opening degree of the refrigeration expansion valve, hc is the extra cold energy generated when the opening degree of the refrigeration expansion valve is 0, and Fc is the protection opening degree; or calculating y= [ Hc/(Fc-r×m) ] x-hc×r×m/(Fc-r×m) in consideration of the influence of the heating device increasing the thermal compensation opening on the temperature adjustment; in practical application, the power of the fixed-frequency compressor is 600W to 800W, the heating device is a heating pipe of 1000W, the protection opening Fc is 1.3s, when the Fc value is fixed, the Hc value is also fixed, the cold quantity is counteracted by the same heat quantity (ensuring that the normal PID control is not disturbed), and the refrigeration expansion valve counteracting the opening of 1.3s needs to be opened for 1.2s.

Therefore, the constant temperature and humidity box determines the extra cold quantity corresponding to the opening difference value according to the preset first corresponding relation, and the additionally generated cold quantity can be matched with the control opening and the protection opening, namely, the temperature control requirement is considered and the stop of the compressor is avoided. Then, the constant temperature and humidity box determines the heat compensation opening according to the extra cold quantity, so that the heat compensation opening is matched with the extra cold quantity, the control accuracy of the heating device is improved, and the extra cold quantity is accurately counteracted by the extra heat generated by the heating device.

Optionally, the constant temperature and humidity box determines the heat compensation opening according to the additional cooling capacity, including: the constant temperature and humidity box determines the heat compensation opening according to the related parameters heated by the heating device; wherein the associated parameters to be heated by the heating means comprise additional cooling capacity, environmental parameters and/or heating power of the heating means.

Wherein the parameters associated with heating by the heating device further comprise the volume of the space regulated by the thermostatic and hygrostat, the type of item storage and/or the number of item storages, etc.

In this way, the heating energy efficiency of the heating device is influenced by various parameters, such as additional cooling capacity, environmental parameters and/or heating power of the heating device, etc. Therefore, the constant temperature and humidity box determines the heat compensation opening according to the related parameters heated by the heating device, and the heat compensation opening can be matched with one or more parameters, so that the control accuracy of the heating device is improved.

Optionally, the constant temperature and humidity box determines the opening degree of heat compensation according to the related parameters heated by the heating device, including: and determining the heat compensation opening corresponding to the related parameters according to a preset second corresponding relation by the constant temperature and humidity box.

The second correspondence relationship may specifically be determined by any manner, as long as the relationship meets the requirement that the energy efficiency of the heating device is reduced, the heat compensation opening tends to be larger, that is, the more the additional cooling capacity is, the lower the ambient temperature is, the lower the heating power is, and the heat compensation opening is larger. The second correspondence is determined, for example, by means of mathematical calculations, look-up tables, developer settings or user settings.

Therefore, the constant temperature and humidity box determines the heat compensation opening corresponding to the related parameters according to the preset second corresponding relation, and the heat compensation opening can be matched with the related parameters, so that the accuracy of the heat compensation opening is improved.

Based on the above structure of the constant temperature and humidity box, as shown in fig. 4, an embodiment of the disclosure provides a method for operating the constant temperature and humidity box without shutdown, including:

And S01, when the constant temperature and humidity box operates, the constant temperature and humidity box acquires the control opening degree of the refrigeration expansion valve.

And S02, when the control opening degree of the refrigeration expansion valve is smaller than the protection opening degree, the constant temperature and humidity box increases the actual opening degree of the refrigeration expansion valve to the protection opening degree.

S41, prolonging the working time of the heating device by the constant temperature and humidity box; and/or the constant temperature and humidity box increases the power of the heating device.

The heat compensation opening degree comprises working time and/or power. Specifically, the heat compensation opening may be any one or more parameters capable of changing the heat output of the heating device, for example, the heat compensation opening may be the number of heating devices, the heating duration, the heating power, or the like. In practical applications, controlling the heating device to increase the heat compensation opening degree may be to increase the number of opening of the heating device, increase the working time of the heating device, and/or increase the power of the heating device.

By adopting the method for the non-stop operation of the constant temperature and humidity box provided by the embodiment of the disclosure, the working time of the heating device is prolonged by the constant temperature and humidity box; and/or the constant temperature and humidity box increases the power of the heating device, and the opening degree of the heating device can be increased by prolonging the heating time of the heating device and/or increasing the power of the heating device, so that the output of the heating device is improved to generate additional heat to offset the cold quantity caused by the protection opening degree.

Optionally, the constant temperature and humidity box determines the protection opening according to the following method: and the constant temperature and humidity box determines the protection opening according to the power of the compressor and the upper limit value of the bypass branch which can bear the backflow refrigerant.

Therefore, the power of the compressor and the upper limit value of the bypass branch circuit capable of bearing the backflow refrigerant can determine the refrigerant flow of the pipeline between the outlet of the condenser and the refrigeration expansion valve. Therefore, the constant temperature and humidity box determines the protection opening according to the power of the compressor and the upper limit value of the bypass branch capable of bearing the backflow refrigerant, and the protection opening can be matched with the refrigerant flow of the constant temperature and humidity box, so that the accuracy of the protection opening is improved, and the compressor is prevented from being stopped due to excessive redundant refrigerant.

As shown in connection with fig. 5, an embodiment of the present disclosure provides an apparatus 800 for non-stop operation of a constant temperature and humidity cabinet, including a processor (processor) 801 and a memory (memory) 802. Optionally, the apparatus may also include a communication interface (Communication Interface) 803 and a bus 804. The processor 801, the communication interface 803, and the memory 802 may communicate with each other via the bus 804. The communication interface 803 may be used for information transfer. The processor 801 may call logic instructions in the memory 802 to perform the method for non-stop operation of the oven of the above-described embodiment.

Further, the logic instructions in the memory 802 described above may be implemented in the form of software functional units and stored in a computer-readable storage medium when sold or used as a stand-alone product.

The memory 802 is a computer-readable storage medium that can be used to store a software program, a computer-executable program, and program instructions/modules corresponding to the methods in the embodiments of the present disclosure. The processor 801 executes functional applications and data processing by running program instructions/modules stored in the memory 802, i.e., implements the method for non-stop operation of the oven in the above-described embodiments.

Memory 802 may include a storage program area that may store an operating system, at least one application program required for functionality, and a storage data area; the storage data area may store data created according to the use of the terminal device, etc. In addition, memory 802 may include high-speed random access memory, and may also include non-volatile memory.

As shown in connection with fig. 6, an embodiment of the present disclosure provides a constant temperature and humidity cabinet 900 comprising: a constant temperature and humidity cabinet body, and the apparatus 800 for non-stop operation of the constant temperature and humidity cabinet described above. The apparatus 800 for operation of the constant temperature and humidity cabinet without shutdown is mounted to the body of the constant temperature and humidity cabinet. The mounting relationships described herein are not limited to placement within a constant temperature and humidity cabinet, but include mounting connections to other components of the cabinet, including but not limited to physical, electrical, or signal transmission connections, etc. Those skilled in the art will appreciate that the apparatus 800 for non-stop operation of a constant temperature and humidity cabinet may be adapted to a viable constant temperature and humidity cabinet body to achieve other viable embodiments.

Embodiments of the present disclosure provide a computer readable storage medium storing computer executable instructions configured to perform the above-described method for non-shutdown operation of a constant temperature and humidity cabinet.

Embodiments of the present disclosure may be embodied in a software product stored on a storage medium, including one or more instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of a method according to embodiments of the present disclosure. And the aforementioned storage medium may be a non-transitory storage medium including: a usb disk, a removable hard disk, a Read-Only Memory (ROM), a random access Memory (RAM, random Access Memory), a magnetic disk, or an optical disk, or other various media capable of storing program codes.

The above description and the drawings illustrate embodiments of the disclosure sufficiently to enable those skilled in the art to practice them. Other embodiments may involve structural, logical, electrical, process, and other changes. The embodiments represent only possible variations. Individual components and functions are optional unless explicitly required, and the sequence of operations may vary. Portions and features of some embodiments may be included in, or substituted for, those of others. Moreover, the terminology used in the present application is for the purpose of describing embodiments only and is not intended to limit the claims. As used in the description of the embodiments and the claims, the singular forms "a," "an," and "the" (the) are intended to include the plural forms as well, unless the context clearly indicates otherwise. Similarly, the term "and/or" as used in this disclosure is meant to encompass any and all possible combinations of one or more of the associated listed. Furthermore, when used in the present disclosure, the terms "comprises," "comprising," and/or variations thereof, mean that the recited features, integers, steps, operations, elements, and/or components are present, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof. Without further limitation, an element defined by the phrase "comprising one …" does not exclude the presence of other like elements in a process, method or apparatus that includes the element. In this context, each embodiment may be described with emphasis on the differences from the other embodiments, and the same similar parts between the various embodiments may be referred to each other. For the methods, products, etc. disclosed in the embodiments, if they correspond to the method sections disclosed in the embodiments, the description of the method sections may be referred to for relevance.

Those of skill in the art will appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware, or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the solution. The skilled artisan may use different methods for each particular application to achieve the described functionality, but such implementation should not be considered to be beyond the scope of the embodiments of the present disclosure. It will be clearly understood by those skilled in the art that, for convenience and brevity of description, specific working procedures of the above-described systems, apparatuses and units may refer to corresponding procedures in the foregoing method embodiments, which are not repeated herein.

In the embodiments disclosed herein, the disclosed methods, articles of manufacture (including but not limited to devices, apparatuses, etc.) may be practiced in other ways. For example, the apparatus embodiments described above are merely illustrative, and for example, the division of the units may be merely a logical function division, and there may be additional divisions when actually implemented, for example, multiple units or components may be combined or integrated into another system, or some features may be omitted, or not performed. In addition, the coupling or direct coupling or communication connection shown or discussed with each other may be through some interface, device or unit indirect coupling or communication connection, which may be in electrical, mechanical or other form. The units described as separate units may or may not be physically separate, and units shown as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units may be selected according to actual needs to implement the present embodiment. In addition, each functional unit in the embodiments of the present disclosure may be integrated in one processing unit, or each unit may exist alone physically, or two or more units may be integrated in one unit.

The flowcharts and block diagrams in the figures illustrate the architecture, functionality, and operation of possible implementations of systems, methods and computer program products according to embodiments of the present disclosure. In this regard, each block in the flowchart or block diagrams may represent a module, segment, or portion of code, which comprises one or more executable instructions for implementing the specified logical function(s). In some alternative implementations, the functions noted in the block may occur out of the order noted in the figures. For example, two blocks shown in succession may, in fact, be executed substantially concurrently, or the blocks may sometimes be executed in the reverse order, depending upon the functionality involved. In the description corresponding to the flowcharts and block diagrams in the figures, operations or steps corresponding to different blocks may also occur in different orders than that disclosed in the description, and sometimes no specific order exists between different operations or steps. For example, two consecutive operations or steps may actually be performed substantially in parallel, they may sometimes be performed in reverse order, which may be dependent on the functions involved. Each block of the block diagrams and/or flowchart illustration, and combinations of blocks in the block diagrams and/or flowchart illustration, can be implemented by special purpose hardware-based systems which perform the specified functions or acts, or combinations of special purpose hardware and computer instructions.

Claims (10)

1. The method for the non-stop operation of the constant temperature and humidity box is characterized in that the constant temperature and humidity box comprises a heating device, a constant frequency compressor, a condenser, a refrigeration expansion valve and an evaporator which are sequentially connected, and a bypass branch connected with an inlet pipeline of the compressor is arranged on an outlet pipeline of the condenser; the method comprises the following steps:

When the constant temperature and humidity box operates, the control opening degree of the refrigeration expansion valve is obtained;

When the control opening degree of the refrigeration expansion valve is smaller than the protection opening degree, the actual opening degree of the refrigeration expansion valve is increased to the protection opening degree;

the opening degree of the heating device is increased.

2. The method of claim 1, wherein increasing the opening of the heating device comprises:

Determining a heat compensation opening according to the protection opening;

And controlling the heating device to increase the heat compensation opening degree.

3. The method of claim 2, wherein determining the heat compensation opening based on the protection opening comprises:

calculating an opening difference value between the protection opening and the control opening;

And determining the heat compensation opening according to the opening difference value.

4. A method according to claim 3, wherein determining the heat compensation opening based on the opening difference comprises:

Determining extra cooling capacity corresponding to the opening difference value according to a preset first corresponding relation;

and determining the heat compensation opening according to the extra cold quantity.

5. The method of claim 4, wherein determining the heat compensation opening based on the additional cooling capacity comprises:

Determining a heat compensation opening according to the related parameters heated by the heating device;

Wherein the associated parameters to be heated by the heating means comprise additional cooling capacity, environmental parameters and/or heating power of the heating means.

6. The method of claim 5, wherein determining the heat compensation opening based on the associated parameter heated by the heating device comprises:

And determining the heat compensation opening corresponding to the associated parameter according to a preset second corresponding relation.

7. The method of claim 2, wherein controlling the heating device to increase the heat compensation opening comprises:

the working time of the heating device is prolonged; and/or the number of the groups of groups,

Increasing the power of the heating device;

The heat compensation opening degree comprises working time and/or power.

8. A method according to any one of claims 1 to 7, characterized in that the guard opening is determined as follows:

And determining the protection opening according to the power of the compressor and the upper limit value of the bypass branch capable of bearing the backflow refrigerant.

9. An apparatus for non-stop operation of a thermostatic incubator comprising a processor and a memory storing program instructions, wherein the processor is configured to perform the method for non-stop operation of a thermostatic incubator as claimed in any one of claims 1 to 7 when the program instructions are executed.

10. A constant temperature and humidity cabinet comprising:

The constant temperature and humidity box body comprises a heating device, a fixed-frequency compressor, a condenser, a refrigeration expansion valve and an evaporator which are sequentially connected, wherein a bypass branch connected with an inlet pipeline of the compressor is arranged on an outlet pipeline of the condenser; and

The apparatus for non-stop operation of a constant temperature and humidity cabinet of claim 9 mounted to the constant temperature and humidity cabinet body.