CN113438866A - Cooling system and method for refrigeration equipment - Google Patents
Cooling system and method for refrigeration equipment Download PDFInfo
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- CN113438866A CN113438866A CN202110714760.9A CN202110714760A CN113438866A CN 113438866 A CN113438866 A CN 113438866A CN 202110714760 A CN202110714760 A CN 202110714760A CN 113438866 A CN113438866 A CN 113438866A
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K7/00—Constructional details common to different types of electric apparatus
- H05K7/20—Modifications to facilitate cooling, ventilating, or heating
- H05K7/2029—Modifications to facilitate cooling, ventilating, or heating using a liquid coolant with phase change in electronic enclosures
- H05K7/20318—Condensers
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K7/00—Constructional details common to different types of electric apparatus
- H05K7/20—Modifications to facilitate cooling, ventilating, or heating
- H05K7/2029—Modifications to facilitate cooling, ventilating, or heating using a liquid coolant with phase change in electronic enclosures
- H05K7/20327—Accessories for moving fluid, for connecting fluid conduits, for distributing fluid or for preventing leakage, e.g. pumps, tanks or manifolds
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Abstract
The application relates to a heat dissipation system and a heat dissipation method of refrigeration equipment. The system comprises: a condenser; the electric appliance box is communicated with the condenser through a regulating valve; the electrical apparatus box includes: the heat exchanger comprises a shell, wherein a back plate is arranged in the shell, one side of the back plate is provided with a component, and the other side of the back plate is provided with a micro-channel heat exchanger; and the controller is connected with the regulating valve, and controls the valve opening of the regulating valve based on the temperature of the component when the heat dissipation condition is reached so as to introduce the refrigerant with the corresponding circulation quantity from the condenser to the micro-channel heat exchanger to dissipate heat of the component. By adopting the system, the cooling medium can be saved, and the heat dissipation effect can be improved.
Description
Technical Field
The present disclosure relates to the field of cooling technologies of refrigeration devices, and in particular, to a cooling system and a cooling method of a refrigeration device.
Background
When the refrigeration equipment operates, the components in the electrical box of the refrigeration equipment generate heat greatly, and generally, the components need to be cooled synchronously during the operation of the refrigeration equipment so as to avoid the damage of the components in the electrical box of the air conditioner due to high temperature. At present, a common heat dissipation method of an electrical box is fan heat dissipation, but the heat dissipation effect of the heat dissipation method is poor.
Disclosure of Invention
In view of the above, it is necessary to provide a heat dissipation system and a heat dissipation method for a refrigeration apparatus, which can improve the heat dissipation effect.
A heat dissipation system for a refrigeration device, comprising:
a condenser;
the electric appliance box is communicated with the condenser through a regulating valve; the electrical apparatus box includes: the heat exchanger comprises a shell, wherein a back plate is arranged in the shell, one side of the back plate is provided with a component, and the other side of the back plate is provided with a micro-channel heat exchanger;
and the controller is connected with the regulating valve, and controls the valve opening of the regulating valve based on the temperature of the component when the heat dissipation condition is reached so as to introduce the refrigerant with the corresponding circulation quantity from the condenser to the micro-channel heat exchanger to dissipate heat of the component.
In one embodiment, when the heat dissipation condition is met, the controller determines a refrigerant demand based on the temperature of the component, determines a valve opening control signal based on the refrigerant demand, and sends the valve opening control signal to the regulating valve;
the regulating valve regulates a valve opening based on the received valve opening control signal.
In one embodiment, the controller determines the temperature of the electrical box based on the temperature of the component, and determines that a heat dissipation condition is reached when the temperature of the electrical box is greater than or equal to an ambient temperature and greater than a first protection threshold.
In one embodiment, after determining that the heat dissipation condition is reached, if the temperature of the electrical box is greater than or equal to a second protection threshold, when the temperature of the electrical box is monitored to be less than or equal to a first protection threshold in the heat dissipation process, the controller controls the regulating valve to close after waiting for a preset time; the second protection threshold is greater than the first protection threshold.
In one embodiment, after determining that the heat dissipation condition is reached, if the temperature of the electrical box is less than a second protection threshold, the controller controls the regulating valve to close when the temperature of the electrical box is less than or equal to a first protection threshold in the heat dissipation process; the second protection threshold is greater than the first protection threshold.
In one embodiment, the microchannel heat exchanger is provided with refrigerant circulation pipelines according to the positions of the components and parts by regions, and the number of the refrigerant circulation pipelines in each region is positively correlated with the highest heating temperature of the components and parts in the corresponding region.
In one embodiment, the condenser has two refrigerant branches, one branch is used for providing refrigerant for refrigeration equipment, and the other branch is connected with the electrical box.
A method of dissipating heat from a refrigeration device, comprising:
acquiring the temperature of components in the electrical box;
when the heat dissipation condition is achieved, the valve opening of the regulating valve is controlled based on the temperature of the component, so that the refrigerant with corresponding circulation is introduced from the condenser to the micro-channel heat exchanger in the electrical box, and the component is dissipated.
In one embodiment, the controlling the valve opening of the regulating valve based on the temperature of the component includes:
determining the refrigerant demand based on the temperature of the component;
determining a valve opening control signal based on the refrigerant demand;
and sending the valve opening control signal to a regulating valve so as to control the valve opening of the regulating valve.
In one embodiment, the method further comprises:
and determining the temperature of the electrical box based on the temperature of the components, and judging that the heat dissipation condition is reached when the temperature of the electrical box is greater than or equal to the ambient temperature and greater than a first protection threshold value.
In one embodiment, the method further comprises:
after the heat dissipation condition is judged to be reached, if the temperature of the electric appliance box is greater than or equal to a second protection threshold value, when the temperature of the electric appliance box is monitored to be less than or equal to a first protection threshold value in the heat dissipation process, after waiting for a preset time, controlling the regulating valve to be closed; the second protection threshold is greater than the first protection threshold.
In one embodiment, the method further comprises:
after the heat dissipation condition is judged to be reached, if the temperature of the electrical box is smaller than a second protection threshold value, the regulating valve is controlled to be closed when the temperature of the electrical box is smaller than or equal to a first protection threshold value in the heat dissipation process; the second protection threshold is greater than the first protection threshold.
When the heat dissipation condition is met, the valve opening of the regulating valve is controlled based on the temperature of the component, so that the refrigerant with the circulation volume matched with the temperature of the component is introduced from the condenser to the micro-channel heat exchanger, the refrigerant circulation volume introduced to the micro-channel heat exchanger is the circulation volume of the refrigerant required by the heat dissipation of the component in the electrical box, the micro-channel heat exchanger can reduce useless waste of excessive refrigerant volume when the component is dissipated based on the acquired refrigerant, the effective utilization rate of the refrigerant can be improved, the component is dissipated through the micro-channel heat exchanger, the heat exchange efficiency can be improved, and the heat dissipation effect can be improved while the refrigerant is saved.
Drawings
FIG. 1 is a system architecture diagram of a heat dissipation system of a refrigeration appliance in one embodiment;
FIG. 2 is a schematic diagram of the front side of a microchannel heat exchanger in one embodiment;
FIG. 3 is a heat dissipation diagram of an electrical enclosure in one embodiment;
FIG. 4 is a schematic flow chart illustrating a method for dissipating heat from a refrigeration unit according to an exemplary embodiment;
fig. 5 is a schematic flow chart of a heat dissipation method of a refrigeration apparatus in another embodiment.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more apparent, the present application is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.
In one embodiment, as shown in fig. 1, there is provided a system architecture of a heat dissipation system of a refrigeration apparatus, and referring to fig. 1, the heat dissipation system of the refrigeration apparatus includes: the system comprises a condenser, an electric appliance communicated with the condenser through a regulating valve, a controller connected with the regulating valve, and a system main path connected with the condenser; wherein, the electrical apparatus box includes: the heat exchanger comprises a shell, wherein a back plate is arranged in the shell, one side of the back plate is provided with a component, and the other side of the back plate is provided with a micro-channel heat exchanger; when the controller reaches a heat dissipation condition, the valve opening of the regulating valve is controlled based on the temperature of the component, so that the refrigerant with corresponding circulation is introduced from the condenser to the micro-channel heat exchanger to dissipate heat of the component.
In one embodiment, the controller is electrically connected to the actuator of the modulating valve. And the driver of the regulating valve is used for responding to the control signal of the controller so as to control the opening and closing of the regulating valve and the opening degree of the regulating valve. Such as a valve opening control signal, a modulating valve closing signal, etc.
Specifically, the controller is used for obtaining the temperature of components in the electrical box, judging whether the heat dissipation condition is reached based on the temperature of the components, and controlling the valve opening of the regulating valve based on the temperature of the components when the heat dissipation condition is judged to be reached so as to control the flow rate of the refrigerant transmitted from the condenser to the micro-channel heat exchanger in the electrical box, so that the micro-channel heat exchanger can dissipate the heat of the components in the electrical box based on the obtained refrigerant.
In one embodiment, reaching the heat dissipation condition refers to the temperature of the electronics box being greater than or equal to the ambient temperature and greater than the first protection threshold. The temperature of the electrical box is determined based on the temperature of the components within the electrical box. The first protection threshold value can be customized according to actual conditions.
In one embodiment, the refrigeration device includes, but is not limited to, an air conditioner.
In one embodiment, the microchannel heat exchanger is detachably arranged on one side of the back plate in the electrical box. The microchannel heat exchanger comprises a plurality of refrigerant circulation pipelines, and when the refrigerant transmitted to the microchannel heat exchanger flows through each refrigerant circulation pipeline, the corresponding components are respectively cooled, so that the heat dissipation of the electrical box is realized. Therefore, the heat exchange efficiency can be improved while the quantity of the refrigerant for heat dissipation is reduced, and the unit performance of the refrigeration equipment can be improved.
In one embodiment, as shown in FIG. 2, a schematic front view of a microchannel heat exchanger is provided. Referring to fig. 2, the microchannel heat exchanger includes a refrigerant inlet, a refrigerant outlet, headers 201 respectively disposed at both sides, a plurality of refrigerant circulation pipes 202 disposed between the headers 201 at both sides, and a baffle 203 disposed inside the headers 201, wherein one header 201 is provided with the refrigerant inlet, and the other header 201 is provided with the refrigerant outlet. The refrigerant transmitted to the microchannel heat exchanger flows into a plurality of refrigerant circulation pipelines from a refrigerant inlet simultaneously, flows to the other side header 201 through the refrigerant circulation pipelines, and then flows back from the other side header 201 in a baffling manner through the other plurality of refrigerant circulation pipelines due to the fact that the baffle plate 203 is arranged inside the other side header 201, the refrigerant flowing to the other side header 201 flows back, and so on, the refrigerant transmitted to the microchannel heat exchanger flows through the plurality of refrigerant circulation pipelines in a plurality of times of turning back, finally flows out from a refrigerant outlet, and heat dissipation of components is achieved in the turning back flowing process.
Above-mentioned refrigeration plant's cooling system, when reaching the radiating condition, the valve opening of temperature control regulation and control valve based on components and parts, refrigerant to the microchannel heat exchanger that the temperature that leads in circulation and components and parts from the condenser suits, this refrigerant circulation that leads in to the microchannel heat exchanger, be the circulation to the required refrigerant of components and parts heat dissipation in the electrical apparatus box, so that the microchannel heat exchanger when dispelling the heat to components and parts based on the refrigerant that acquires, can reduce the useless waste of too much refrigerant volume, thereby can improve the effective utilization ratio of refrigerant, and dispel the heat to components and parts through the microchannel heat exchanger, can improve heat exchange efficiency, thereby can be when saving the refrigerant, improve the radiating effect.
In one embodiment, when a heat dissipation condition is reached, the controller determines a refrigerant demand based on the temperature of the component, determines a valve opening control signal based on the refrigerant demand, and sends the valve opening control signal to the regulating valve; the regulating valve regulates a valve opening based on the received valve opening control signal.
The refrigerant demand refers to a circulation amount of a refrigerant required for heat dissipation of the electrical box (that is, each component in the electrical box), and the higher the temperature of the component in the electrical box is, the larger the required refrigerant demand is. The valve opening control signal is a signal for controlling the valve opening of the regulator valve. The larger the refrigerant demand of the electrical box is, the larger the valve opening of the regulating valve is, so that the refrigerant with larger circulation is introduced into the micro-channel heat exchanger.
Specifically, the controller judges whether the heat dissipation condition is reached based on the temperature of the components in the electrical box, determines the temperature of the electrical box based on the temperature of the components when judging that the heat dissipation condition is reached, determines the refrigerant demand of the electrical box based on the temperature of the electrical box, generates a valve opening control signal based on the refrigerant demand, and sends the valve opening control signal to the regulating valve. Accordingly, the regulating valve controls the valve opening of the regulating valve itself based on the received valve opening control signal to control the refrigerant circulation amount transmitted from the condenser to the microchannel heat exchanger.
In one embodiment, the electrical box further comprises a temperature detection unit for detecting the temperature of the components in the electrical box and sending the temperature to the controller. The temperature detection unit may specifically be a temperature sensor, and may set a temperature sensor for each component in the electrical appliance box, for detecting the temperature of the corresponding component, and may also set a corresponding temperature sensor for a set component, for detecting the temperature of the set component, where the set component includes, but is not limited to, a compressor and a fan, and may also set a temperature sensor at a set position in the electrical appliance box, for detecting the temperature of the set position as the temperature of the component, and the setting position and the setting mode of the temperature sensor are not specifically limited here. It is understood that when the component is an IPM (Intelligent Power Module), the IPM is also used for detecting the temperature of the component itself and sending the detected temperature to the controller.
In the above embodiment, the refrigerant demand is determined based on the temperature of the component, and the valve opening of the regulating valve is controlled based on the refrigerant demand, so as to control the flow rate of the refrigerant introduced into the microchannel heat exchanger, thereby realizing reasonable distribution of the refrigerant flow rate and reducing useless waste of excessive refrigerant.
In one embodiment, the controller determines the temperature of the electrical box based on the temperature of the component, and determines that a heat dissipation condition is reached when the temperature of the electrical box is greater than or equal to an ambient temperature and greater than a first protection threshold.
Specifically, the controller determines the temperature of the electrical box based on the acquired temperature of the component, and compares the temperature of the electrical box with the current ambient temperature and a preset first protection threshold value respectively to judge whether the heat dissipation condition is reached. And when the temperature of the electrical box is judged to be greater than or equal to the ambient temperature and is greater than the first protection threshold value, the heat dissipation condition is judged to be reached.
In one embodiment, the controller compares the temperature of the electrical box with an ambient temperature, when the temperature of the electrical box is less than the ambient temperature, the electrical box is characterized to have no heating risk and does not need to perform heat dissipation, and then the controller determines that the heat dissipation condition is not reached.
It is understood that the regulating valve remains closed when it is determined that the heat radiation condition is not reached. When the temperature of electrical apparatus box is less than ambient temperature, the regulation and control valve keeps the closed state to cut off and be used for the radiating refrigerant of electrical apparatus box, like this, when refrigeration plant's the unit that heats was started under low temperature environment, can avoid because of the problem of electrical apparatus box condensation or damage that the refrigerant temperature crossed excessively and leads to, thereby can improve electrical apparatus box's security.
In one embodiment, the power unit is a component with the largest heat generation amount in the electrical box, so the temperature of the electrical box for comparing with the ambient temperature may be specifically the temperature of the component, i.e., the power unit. In this way, when the temperature of the power unit is greater than or equal to the ambient temperature, the temperature of the electrical box is further determined based on the respective temperatures of the compressor and the fan in the electrical box, so as to determine whether the heat dissipation condition is reached based on the further determined temperature of the electrical box and the first protection threshold.
In one embodiment, the temperature of the electrical box is obtained by averaging the temperatures of the components in the electrical box, and the averaging may specifically be arithmetic averaging or weighted averaging.
In the above embodiment, whether the heat dissipation condition is met is judged based on the temperature of the electrical box, the ambient temperature and the set first protection threshold, so that the judgment accuracy can be improved, and the refrigerant circulation introduced into the microchannel heat exchanger can be more accurately controlled.
In one embodiment, after determining that the heat dissipation condition is reached, if the temperature of the electrical box is greater than or equal to a second protection threshold, when the temperature of the electrical box is monitored to be less than or equal to a first protection threshold in the heat dissipation process, the controller controls the regulating valve to close after waiting for a preset time; the second protection threshold is greater than the first protection threshold.
Specifically, after the controller determines that the heat dissipation condition is met, the valve opening of the regulating valve is controlled based on the temperature of the electrical box (namely, the temperature of the component in the electrical box), so that a refrigerant with a corresponding flow rate is introduced into the microchannel heat exchanger, the microchannel heat exchanger dissipates heat of the electrical box (namely, the component in the electrical box) based on the obtained refrigerant, the temperature of the component in the electrical box is monitored in the heat dissipation process, the temperature of the electrical box in the heat dissipation process is determined based on the monitored temperature of the component, the temperature of the electrical box in the heat dissipation process is monitored, the monitored temperature of the electrical box in the heat dissipation process is compared with a first protection threshold, and when the monitored temperature of the electrical box is smaller than or equal to the first protection threshold, the heat dissipation is determined to be completed.
If the temperature of the electrical box for judging that the electrical box reaches the heat dissipation condition is greater than or equal to the second protection threshold value, the fact that the heating degree of the electrical box is too high when the heat dissipation condition is reached is indicated, when the temperature of the electrical box monitored in the heat dissipation process is less than or equal to the first protection threshold value, namely when the heat dissipation is judged to be completed, the preset time duration is continuously waited, the opening state of the regulating valve is kept within the preset time duration of waiting, so that the requirement of large heat dissipation capacity required by high-load operation of the system at the moment is met, and after the preset time duration is waited, the regulating valve is controlled to be closed, so that the micro-channel heat exchanger is controlled to stop dissipating heat of the electrical box.
In one embodiment, the controller controls the modulated valve to close via a modulated valve close signal.
In one embodiment, the preset time period is determined based on a high thermal load degree of the electrical box, and the higher the high thermal load degree of the electrical box is, the larger the heating value of the electrical box is when the heat dissipation condition is reached, that is, the higher the temperature of the electrical box is when the heat dissipation condition is reached, so that the preset time period is positively correlated with the temperature of the electrical box when the heat dissipation condition is reached, and the higher the temperature of the electrical box is when the heat dissipation condition is reached, the longer the preset time period to wait when the heat dissipation is completed is.
In one embodiment, the preset duration is also in positive correlation with the duration of the heat dissipation process, and the longer the duration of the heat dissipation process is, the longer the preset duration of waiting after the heat dissipation is completed is.
In the above embodiment, based on the temperature of the components in the electrical apparatus box, the dynamic regulation and control is used for cooling the refrigerant circulation of the electrical apparatus box and the cooling duration of the electrical apparatus box, so that the cooling mode has higher intelligence and safety, and the accuracy of cooling control can be improved.
In one embodiment, after determining that the heat dissipation condition is reached, if the temperature of the electrical box is less than a second protection threshold, the controller controls the regulating valve to close when the temperature of the electrical box is less than or equal to a first protection threshold in the heat dissipation process; the second protection threshold is greater than the first protection threshold.
Specifically, after the controller determines that the heat dissipation condition is met, the valve opening of the regulating valve is controlled based on the temperature of the electrical box, so that the refrigerant with the corresponding circulation is introduced into the micro-channel heat exchanger, the micro-channel heat exchanger dissipates heat of the electrical box based on the acquired refrigerant, the temperature of the electrical box is monitored in the heat dissipation process, and when the monitored temperature of the electrical box is smaller than or equal to a first protection threshold value, the heat dissipation is determined to be completed.
If the temperature of the electrical box for judging that the electrical box reaches the heat dissipation condition is smaller than the second protection threshold, the fact that the heating degree of the electrical box is low when the heat dissipation condition is reached is indicated, when the temperature of the electrical box monitored in the heat dissipation process is smaller than or equal to the first protection threshold, namely when the heat dissipation is judged to be completed, the control valve is controlled to be closed, the micro-channel heat exchanger is controlled to stop dissipating heat of the electrical box, and the refrigerant of the bypass branch is introduced into the main system of the system to participate in circulation.
In one embodiment, when it is determined that the electrical box is free of the heating risk based on the temperature of the electrical box, heat dissipation of the electrical box is stopped, and the temperature of components in the electrical box is monitored in real time.
In the above embodiment, based on the temperature of the components in the electrical apparatus box, the dynamic regulation and control is used for cooling the refrigerant circulation of the electrical apparatus box and the cooling duration of the electrical apparatus box, so that the cooling mode has higher intelligence and safety, and the accuracy of cooling control can be improved.
In one embodiment, the second guard threshold is M times the first guard threshold, the M being greater than 1.
Wherein, M can be customized according to practical situations, such as 1.1, and is not specifically limited herein.
In one embodiment, the microchannel heat exchanger is provided with refrigerant circulation pipelines according to the positions of the components and the components by regions, and the number of the refrigerant circulation pipelines in each region is positively correlated with the highest heating temperature of the components and the components in the corresponding region.
Specifically, refrigerant pipe circulation pipelines in the microchannel heat exchanger are arranged according to regions according to positions of components in the electrical box, and the number of the refrigerant circulation pipelines arranged in each region is positively correlated with the highest heating temperature of the components in the corresponding region, so that the larger the highest heating temperature of the components is, the larger the number of the refrigerant circulation pipelines arranged in the region is.
For each area, after the number of the refrigerant circulation pipelines deployed in the area and the area length are determined, the distance between the refrigerant circulation pipelines deployed in the area can be determined based on the area length and the number of the refrigerant circulation pipelines deployed, and therefore the density of the refrigerant circulation pipelines deployed in each area is positively correlated with the highest heating temperature of components in the corresponding area. Therefore, the higher the highest heating temperature of the components in the region is, the more the number of the refrigerant circulation pipelines which need to be deployed is, the higher the density of the deployed refrigerant circulation pipelines is, and the shorter the distance between the refrigerant circulation pipelines is.
In one embodiment, for each area, the component with the largest maximum heat generation temperature is screened out from the area, and the number of refrigerant circulation pipelines required to be deployed in the area is determined based on the maximum heat generation temperature of the screened component, so that the number of the refrigerant circulation pipelines in the area is positively correlated with the maximum heat generation temperature of the screened component in the area. It is understood that the number of refrigerant circulation pipelines required to be deployed in each region may also be determined based on a sum or an average of maximum heating temperatures of components in the corresponding region, and is not particularly limited herein.
In one embodiment, the components in the electrical box are divided into regions according to horizontal rows, and the components in the same horizontal row in the electrical box are divided into the same region. Each component in the electrical box can be divided into only one area, but not into a plurality of areas simultaneously. It will be appreciated that if a component is in multiple regions at the same time, the component may be divided into regions that cover the most of the component.
In one embodiment, the higher the temperature of the component, the greater the heat generation amount, the greater the refrigerant flow amount required to dissipate heat to the component. The maximum heating temperature of the component determines the maximum heating value of the component, so that the number of refrigerant circulation pipelines in each area is positively correlated with the maximum heating value of the component in the corresponding area.
Fig. 3 is a heat dissipation diagram of an electrical box provided in one embodiment. As shown in fig. 3, the electrical box includes a housing, a back plate is disposed in the housing, a component a, a component B, a component C, and a component D are disposed on one side of the back plate, a microchannel heat exchanger is disposed on the other side of the back plate, and a refrigerant inlet of the microchannel heat exchanger is disposed on the right side of the microchannel heat exchanger.
When a refrigerant circulation pipeline of the microchannel heat exchanger is deployed, assuming that the electrical box is divided into three regions, the component a and the component C are respectively and independently located in one region, the component B and the component D are located in the same region, and assuming that the temperature T2 is greater than the temperature T1 and less than the temperature T3, as shown in the following table, the maximum heating temperature T of the component a is1Greater than temperature T1 and less than temperature T2, whereby the number of refrigerant circulation lines in the corresponding region is determined to be 1 based on the maximum heat generation temperature of component a, and similarly, the maximum heat generation temperature T of component C2Is greater than the temperature T2 and less than the temperature T3, so that the number and the spacing of the refrigerant circulating pipelines in the corresponding area are respectively 2 and L1, and further, the maximum heating temperature T of the component B is4The number and the spacing of refrigerant circulation pipelines for radiating the component B are respectively 3 and L2 when the temperature is higher than T3, and the highest heating temperature T of the component D is3The number of refrigerant circulation pipelines for heat dissipation of the component D is 2 when the temperature is greater than the temperature T2 and less than the temperature T3, and since the component B and the component D are located in the same region, 3 refrigerant circulation pipelines are deployed in the region, and the component B and the component D share 2 refrigerant circulation pipelines, wherein the distance L1 is greater than the distance L2.
Therefore, the higher the highest heating temperature of the component is, the more the number of refrigerant circulation pipelines for radiating the component is, and the shorter the distance between the refrigerant circulation pipelines is. It should be noted that the number of components, the maximum heat generation temperature of each component, and the number and the pitch of the refrigerant circulation pipes for dissipating heat from each component shown in fig. 3 are merely examples, and are not limited to specific ones.
In the above embodiment, according to the highest heating temperature of the components in different regions in the electrical box, the number of the refrigerant circulation pipelines required to be deployed in the corresponding region is adaptively adjusted, so that when the components in the corresponding region are cooled through the refrigerant circulation pipelines deployed in each region, the circulation of the refrigerant flowing through the refrigerant circulation pipelines deployed in each region can be ensured to be adapted to the temperature of the components in the corresponding region, thereby improving the heat exchange effect and reducing the probability of damaging the components due to the overlarge circulation of the refrigerant used for cooling.
In one embodiment, the condenser has two refrigerant branches, one branch is used for providing refrigerant for refrigeration equipment, and the other branch is connected with the electrical box.
As shown in fig. 1, one branch of the condenser is used as a refrigerant main path for providing refrigerant to a system main path of the refrigeration equipment, and the other branch is used as a refrigerant bypass branch for dissipating heat from the connected electrical box. It can be understood that heat dissipation of the electrical box means heat dissipation of components in the electrical box.
In one embodiment, the main system path of the refrigeration apparatus may specifically refer to an indoor unit of the refrigeration apparatus, such that a bypass branch is disposed on a refrigerant pipeline behind the outdoor unit, so that a part of the refrigerant of the condenser is introduced into the microchannel heat exchanger through the bypass branch to dissipate heat from the electrical box, and the rest of the refrigerant flows to the indoor unit of the refrigeration apparatus for refrigeration.
In the above embodiment, the main refrigerant path for refrigeration is distinguished from the heat dissipation loop for dissipating heat from the electrical box, and the refrigerant flow rate of the heat dissipation loop is determined based on the temperature of the components in the electrical box, so that the effective utilization rate of the refrigerant can be improved.
In one embodiment, as shown in fig. 4, a heat dissipation method for a refrigeration device is provided, which is described by taking the method as an example for being applied to the controller in fig. 1, and includes the following steps:
s402, obtaining the temperature of the components in the electrical box.
In one embodiment, a temperature detection unit in the electrical box detects the temperature of components in the electrical box and sends the temperature to the controller. Correspondingly, the controller receives the temperature of the components in the electrical box detected and sent by the temperature detection unit in the electrical box. The temperature detection unit may specifically be a temperature sensor, and may set a temperature sensor for each component in the electrical appliance box, for detecting the temperature of the corresponding component, and may also set a corresponding temperature sensor for a set component, for detecting the temperature of the set component, where the set component includes, but is not limited to, a compressor and a fan, and may also set a temperature sensor at a set position in the electrical appliance box, for detecting the temperature of the set position as the temperature of the component, and the setting position and the setting mode of the temperature sensor are not specifically limited here. It is understood that when the component inside the electrical box is an IPM (Intelligent Power Module), the IPM is also used for detecting the temperature of the component itself and sending the detected temperature to the controller.
S404, when the heat dissipation condition is achieved, the valve opening of the regulating valve is controlled based on the temperature of the component, so that the refrigerant with the corresponding circulation quantity is introduced from the condenser to the micro-channel heat exchanger in the electrical box, and the component is dissipated.
The condition of reaching the heat dissipation means that the temperature of the electric appliance box is greater than or equal to the ambient temperature and greater than a first protection threshold value. The temperature of the electrical box is determined based on the temperature of the components within the electrical box. The first protection threshold value can be customized according to actual conditions.
Specifically, the controller judges whether the heat dissipation condition is reached based on the temperature of the components in the electrical apparatus box, and controls the valve opening of the regulating valve based on the temperature of the components when the heat dissipation condition is reached, so as to control the flow of the refrigerant transmitted from the condenser to the micro-channel heat exchanger in the electrical apparatus box, and so as to facilitate the micro-channel heat exchanger to dissipate heat of the components in the electrical apparatus box based on the acquired refrigerant.
According to the heat dissipation method of the refrigeration equipment, when the heat dissipation condition is achieved, the valve opening degree of the regulating valve is controlled based on the temperature of the component, the refrigerant with the circulation volume matched with the temperature of the component is led into the micro-channel heat exchanger from the condenser, the refrigerant circulation volume led into the micro-channel heat exchanger is the circulation volume of the refrigerant needed by the heat dissipation of the component in the electrical appliance box, and therefore when the micro-channel heat exchanger dissipates the heat of the component based on the obtained refrigerant, useless waste of too much refrigerant volume can be reduced, the effective utilization rate of the refrigerant can be improved, the heat of the component can be dissipated through the micro-channel heat exchanger, the heat exchange efficiency can be improved, and the heat dissipation effect can be improved while the refrigerant is saved.
In one embodiment, the controlling the valve opening of the regulating valve based on the temperature of the component includes: determining the refrigerant demand based on the temperature of the component; determining a valve opening control signal based on the refrigerant demand; and sending the valve opening control signal to a regulating valve so as to control the valve opening of the regulating valve.
The refrigerant demand refers to a circulation amount of a refrigerant required for heat dissipation of the electrical box (that is, each component in the electrical box), and the higher the temperature of the component in the electrical box is, the larger the required refrigerant demand is. The valve opening control signal is a signal for controlling the valve opening of the regulator valve. The larger the refrigerant demand of the electrical box is, the larger the valve opening of the regulating valve is, so that the refrigerant with larger circulation is introduced into the micro-channel heat exchanger.
Specifically, the controller judges whether the heat dissipation condition is reached based on the temperature of the components in the electrical box, determines the temperature of the electrical box based on the temperature of the components when judging that the heat dissipation condition is reached, determines the refrigerant demand of the electrical box based on the temperature of the electrical box, generates a valve opening control signal based on the refrigerant demand, and sends the valve opening control signal to the regulating valve. Accordingly, the regulating valve controls the valve opening of the regulating valve itself based on the received valve opening control signal to control the refrigerant circulation amount transmitted from the condenser to the microchannel heat exchanger.
In the above embodiment, the refrigerant demand is determined based on the temperature of the component, and the valve opening of the regulating valve is controlled based on the refrigerant demand, so as to control the flow rate of the refrigerant introduced into the microchannel heat exchanger, thereby realizing reasonable distribution of the refrigerant flow rate and reducing useless waste of excessive refrigerant.
In one embodiment, the heat dissipation method of the refrigeration apparatus further includes: and determining the temperature of the electrical box based on the temperature of the components, and judging that the heat dissipation condition is reached when the temperature of the electrical box is greater than or equal to the ambient temperature and greater than a first protection threshold value.
Specifically, the controller determines the temperature of the electrical box based on the acquired temperature of the component, and compares the temperature of the electrical box with the current ambient temperature and a preset first protection threshold value respectively to judge whether the heat dissipation condition is reached. And when the temperature of the electrical box is judged to be greater than or equal to the ambient temperature and is greater than the first protection threshold value, the heat dissipation condition is judged to be reached.
In one embodiment, the controller compares the temperature of the electrical box with an ambient temperature, when the temperature of the electrical box is less than the ambient temperature, the electrical box is characterized to have no heating risk and does not need to perform heat dissipation, and then the controller determines that the heat dissipation condition is not reached.
It is understood that the regulating valve remains closed when it is determined that the heat radiation condition is not reached. When the temperature of electrical apparatus box is less than ambient temperature, the regulation and control valve keeps the closed state to cut off and be used for the radiating refrigerant of electrical apparatus box, like this, when refrigeration plant's the unit that heats was started under low temperature environment, can avoid because of the problem of electrical apparatus box condensation or damage that the refrigerant temperature crossed excessively and leads to, thereby can improve electrical apparatus box's security.
In one embodiment, the power unit is a component with the largest heat generation amount in the electrical box, so the temperature of the electrical box for comparing with the ambient temperature may be specifically the temperature of the component, i.e., the power unit. In this way, when the temperature of the power unit is greater than or equal to the ambient temperature, the temperature of the electrical box is further determined based on the respective temperatures of the compressor and the fan in the electrical box, so as to determine whether the heat dissipation condition is reached based on the further determined temperature of the electrical box and the first protection threshold.
In one embodiment, the temperature of the electrical box is obtained by averaging the temperatures of the components in the electrical box, and the averaging may specifically be arithmetic averaging or weighted averaging.
In the above embodiment, whether the heat dissipation condition is met is judged based on the temperature of the electrical box, the ambient temperature and the set first protection threshold, so that the judgment accuracy can be improved, and the refrigerant circulation introduced into the microchannel heat exchanger can be more accurately controlled.
In one embodiment, the heat dissipation method of the refrigeration apparatus further includes: after the heat dissipation condition is judged to be reached, if the temperature of the electric appliance box is greater than or equal to a second protection threshold value, when the temperature of the electric appliance box is monitored to be less than or equal to a first protection threshold value in the heat dissipation process, after waiting for a preset time, controlling the regulating valve to be closed; the second protection threshold is greater than the first protection threshold.
Specifically, after the controller determines that the heat dissipation condition is met, the valve opening of the regulating valve is controlled based on the temperature of the electrical box (namely, the temperature of the component in the electrical box), so that a refrigerant with a corresponding flow rate is introduced into the microchannel heat exchanger, the microchannel heat exchanger dissipates heat of the electrical box (namely, the component in the electrical box) based on the obtained refrigerant, the temperature of the component in the electrical box is monitored in the heat dissipation process, the temperature of the electrical box in the heat dissipation process is determined based on the monitored temperature of the component, the temperature of the electrical box in the heat dissipation process is monitored, the monitored temperature of the electrical box in the heat dissipation process is compared with a first protection threshold, and when the monitored temperature of the electrical box is smaller than or equal to the first protection threshold, the heat dissipation is determined to be completed.
If the temperature of the electrical box for judging that the electrical box reaches the heat dissipation condition is greater than or equal to the second protection threshold value, the fact that the heating degree of the electrical box is too high when the heat dissipation condition is reached is indicated, when the temperature of the electrical box monitored in the heat dissipation process is less than or equal to the first protection threshold value, namely when the heat dissipation is judged to be completed, the preset time duration is continuously waited, the opening state of the regulating valve is kept within the preset time duration of waiting, so that the requirement of large heat dissipation capacity required by high-load operation of the system at the moment is met, and after the preset time duration is waited, the regulating valve is controlled to be closed, so that the micro-channel heat exchanger is controlled to stop dissipating heat of the electrical box.
In one embodiment, the preset time period is determined based on a high thermal load degree of the electrical box, and the higher the high thermal load degree of the electrical box is, the larger the heating value of the electrical box is when the heat dissipation condition is reached, that is, the higher the temperature of the electrical box is when the heat dissipation condition is reached, so that the preset time period is positively correlated with the temperature of the electrical box when the heat dissipation condition is reached, and the higher the temperature of the electrical box is when the heat dissipation condition is reached, the longer the preset time period to wait when the heat dissipation is completed is.
In one embodiment, the preset duration is also in positive correlation with the duration of the heat dissipation process, and the longer the duration of the heat dissipation process is, the longer the preset duration of waiting after the heat dissipation is completed is.
In the above embodiment, based on the temperature of the components in the electrical apparatus box, the dynamic regulation and control is used for cooling the refrigerant circulation of the electrical apparatus box and the cooling duration of the electrical apparatus box, so that the cooling mode has higher intelligence and safety, and the accuracy of cooling control can be improved.
In one embodiment, the heat dissipation method of the refrigeration apparatus further includes: after the heat dissipation condition is judged to be reached, if the temperature of the electrical box is smaller than a second protection threshold value, the regulating valve is controlled to be closed when the temperature of the electrical box is smaller than or equal to a first protection threshold value in the heat dissipation process; the second protection threshold is greater than the first protection threshold.
Specifically, after the controller determines that the heat dissipation condition is met, the valve opening of the regulating valve is controlled based on the temperature of the electrical box, so that the refrigerant with the corresponding circulation is introduced into the micro-channel heat exchanger, the micro-channel heat exchanger dissipates heat of the electrical box based on the acquired refrigerant, the temperature of the electrical box is monitored in the heat dissipation process, and when the monitored temperature of the electrical box is smaller than or equal to a first protection threshold value, the heat dissipation is determined to be completed.
If the temperature of the electrical box for judging that the electrical box reaches the heat dissipation condition is smaller than the second protection threshold, the fact that the heating degree of the electrical box is low when the heat dissipation condition is reached is indicated, when the temperature of the electrical box monitored in the heat dissipation process is smaller than or equal to the first protection threshold, namely when the heat dissipation is judged to be completed, the control valve is controlled to be closed, the micro-channel heat exchanger is controlled to stop dissipating heat of the electrical box, and the refrigerant of the bypass branch is introduced into the main system of the system to participate in circulation.
In one embodiment, when it is determined that the electrical box is free of the heating risk based on the temperature of the electrical box, heat dissipation of the electrical box is stopped, and the temperature of components in the electrical box is monitored in real time.
In the above embodiment, based on the temperature of the components in the electrical apparatus box, the dynamic regulation and control is used for cooling the refrigerant circulation of the electrical apparatus box and the cooling duration of the electrical apparatus box, so that the cooling mode has higher intelligence and safety, and the accuracy of cooling control can be improved.
In one embodiment, the second guard threshold is M times the first guard threshold, the M being greater than 1.
Wherein, M can be customized according to practical situations, such as 1.1, and is not specifically limited herein.
In one embodiment, as shown in fig. 5, a flow diagram of a heat dissipation method of a refrigeration device is provided. The method comprises the following steps: after the refrigeration equipment is started to operate, detecting the respective temperatures of a power unit, a compressor and a fan in the electrical box, judging whether the temperature of the electrical box is lower than the ambient temperature or not based on the detected temperatures, if so, keeping the regulating valve closed, if not, judging whether the temperature of the electrical box is lower than or equal to a first protection threshold or not, if not, keeping the regulating valve closed, if so, determining the refrigerant demand according to the temperature of the electrical box when the temperature of the electrical box is higher than or equal to a second protection threshold, controlling the valve opening of the regulating valve according to the refrigerant demand, synchronously monitoring the temperature of the electrical box in the heat dissipation process, controlling the regulating valve to be closed after waiting for a preset time when the temperature of the electrical box is lower than or equal to the first protection threshold, and if the temperature of the electrical box is lower than the second protection threshold, determining the refrigerant demand according to the temperature of the electrical box, controlling the valve opening of the regulating valve according to the demand, and synchronously monitoring the temperature of the electrical box in the heat dissipation process, judging whether the monitored temperature of the electrical box is less than or equal to a first protection threshold value, if so, indicating that the heat dissipation is finished, controlling the regulating valve to be closed, if not, continuing to operate, and judging whether the continuously monitored temperature of the electrical box is less than or equal to the first protection threshold value until the heat dissipation is finished.
It should be understood that, although the steps in the flowchart of fig. 4 are shown in order as indicated by the arrows, the steps are not necessarily performed in order as indicated by the arrows. The steps are not performed in the exact order shown and described, and may be performed in other orders, unless explicitly stated otherwise. Moreover, at least a portion of the steps in fig. 4 may include multiple steps or multiple stages, which are not necessarily performed at the same time, but may be performed at different times, which are not necessarily performed in sequence, but may be performed in turn or alternately with other steps or at least a portion of the other steps or stages.
In one embodiment, there is provided a heat dissipating device of a refrigeration apparatus, including: an acquisition module and a control module, wherein: the acquisition module is used for acquiring the temperature of components in the electrical box; and the control module is used for controlling the valve opening of the regulating valve based on the temperature of the component when the heat dissipation condition is reached so as to introduce the refrigerant with the corresponding circulation quantity from the condenser to the micro-channel heat exchanger in the electrical box to dissipate heat of the component.
For specific definition of the heat dissipation device of the refrigeration apparatus, reference may be made to the above definition of the heat dissipation method of the refrigeration apparatus, and details are not described here. All or part of each module in the heat dissipation device of the refrigeration equipment can be realized by software, hardware and a combination thereof. The modules can be embedded in a hardware form or independent from a processor in the computer device, and can also be stored in a memory in the computer device in a software form, so that the processor can call and execute operations corresponding to the modules.
It will be understood by those skilled in the art that all or part of the processes of the methods of the embodiments described above can be implemented by hardware instructions of a computer program, which can be stored in a non-volatile computer-readable storage medium, and when executed, can include the processes of the embodiments of the methods described above. Any reference to memory, storage, database or other medium used in the embodiments provided herein can include at least one of non-volatile and volatile memory. Non-volatile Memory may include Read-Only Memory (ROM), magnetic tape, floppy disk, flash Memory, optical storage, or the like. Volatile Memory can include Random Access Memory (RAM) or external cache Memory. By way of illustration and not limitation, RAM can take many forms, such as Static Random Access Memory (SRAM) or Dynamic Random Access Memory (DRAM), among others.
The technical features of the above embodiments can be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the above embodiments are not described, but should be considered as the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (12)
1. A heat dissipation system for a refrigeration device, comprising:
a condenser;
the electric appliance box is communicated with the condenser through a regulating valve; the electrical apparatus box includes: the heat exchanger comprises a shell, wherein a back plate is arranged in the shell, one side of the back plate is provided with a component, and the other side of the back plate is provided with a micro-channel heat exchanger;
and the controller is connected with the regulating valve, and controls the valve opening of the regulating valve based on the temperature of the component when the heat dissipation condition is reached so as to introduce the refrigerant with the corresponding circulation quantity from the condenser to the micro-channel heat exchanger to dissipate heat of the component.
2. The system of claim 1, wherein the controller, when a heat dissipation condition is reached, determines a refrigerant demand based on the temperature of the component, determines a valve opening control signal based on the refrigerant demand, and sends the valve opening control signal to the regulating valve;
the regulating valve regulates a valve opening based on the received valve opening control signal.
3. The system of claim 2, wherein the controller determines the temperature of the electrical enclosure based on the temperature of the component, and determines that a heat dissipation condition is reached when the temperature of the electrical enclosure is greater than or equal to an ambient temperature and greater than a first protection threshold.
4. The system of claim 3, wherein after determining that the heat dissipation condition is reached, if the temperature of the electrical box is greater than or equal to the second protection threshold, the controller controls the regulating valve to close after waiting for a preset time period when the temperature of the electrical box is less than or equal to the first protection threshold in the heat dissipation process; the second protection threshold is greater than the first protection threshold.
5. The system of claim 3, wherein after determining that the heat dissipation condition is reached, if the temperature of the electrical box is less than a second protection threshold, the controller controls the regulating valve to close when the temperature of the electrical box is monitored to be less than or equal to a first protection threshold during the heat dissipation process; the second protection threshold is greater than the first protection threshold.
6. The system according to any one of claims 1 to 5, wherein the microchannel heat exchanger is provided with refrigerant circulation pipelines according to the positions of the components by regions, and the number of the refrigerant circulation pipelines in each region is positively correlated with the maximum heating temperature of the components in the corresponding region.
7. The system of any one of claims 1 to 5, wherein the condenser has two refrigerant branches, one branch for supplying refrigerant to the refrigeration equipment and the other branch being connected to the electrical box.
8. A method of dissipating heat from a refrigeration apparatus, comprising:
acquiring the temperature of components in the electrical box;
when the heat dissipation condition is achieved, the valve opening of the regulating valve is controlled based on the temperature of the component, so that the refrigerant with corresponding circulation is introduced from the condenser to the micro-channel heat exchanger in the electrical box, and the component is dissipated.
9. The method of claim 8, wherein controlling a valve opening of a regulator valve based on the temperature of the component comprises:
determining the refrigerant demand based on the temperature of the component;
determining a valve opening control signal based on the refrigerant demand;
and sending the valve opening control signal to a regulating valve so as to control the valve opening of the regulating valve.
10. The method of claim 8, further comprising:
and determining the temperature of the electrical box based on the temperature of the components, and judging that the heat dissipation condition is reached when the temperature of the electrical box is greater than or equal to the ambient temperature and greater than a first protection threshold value.
11. The method of claim 10, further comprising:
after the heat dissipation condition is judged to be reached, if the temperature of the electric appliance box is greater than or equal to a second protection threshold value, when the temperature of the electric appliance box is monitored to be less than or equal to a first protection threshold value in the heat dissipation process, after waiting for a preset time, controlling the regulating valve to be closed; the second protection threshold is greater than the first protection threshold.
12. The method of claim 10, further comprising:
after the heat dissipation condition is judged to be reached, if the temperature of the electrical box is smaller than a second protection threshold value, the regulating valve is controlled to be closed when the temperature of the electrical box is smaller than or equal to a first protection threshold value in the heat dissipation process; the second protection threshold is greater than the first protection threshold.
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104848436A (en) * | 2015-05-11 | 2015-08-19 | 广东美的暖通设备有限公司 | Electronic component box cooling system, refrigerant flow control method and air conditioner |
| CN105953308A (en) * | 2016-05-11 | 2016-09-21 | 广东美的暖通设备有限公司 | Air conditioner system and control method thereof |
| CN106168421A (en) * | 2016-07-08 | 2016-11-30 | 珠海格力电器股份有限公司 | Heat exchanger and there is its air-conditioner |
| CN111795474A (en) * | 2020-07-17 | 2020-10-20 | 广东Tcl智能暖通设备有限公司 | Control method and control device of air conditioner, air conditioner and storage medium |
| CN112432256A (en) * | 2020-11-30 | 2021-03-02 | 珠海格力电器股份有限公司 | Control circuit board, electrical box, air conditioning system and control method thereof |
-
2021
- 2021-06-25 CN CN202110714760.9A patent/CN113438866B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104848436A (en) * | 2015-05-11 | 2015-08-19 | 广东美的暖通设备有限公司 | Electronic component box cooling system, refrigerant flow control method and air conditioner |
| CN105953308A (en) * | 2016-05-11 | 2016-09-21 | 广东美的暖通设备有限公司 | Air conditioner system and control method thereof |
| CN106168421A (en) * | 2016-07-08 | 2016-11-30 | 珠海格力电器股份有限公司 | Heat exchanger and there is its air-conditioner |
| CN111795474A (en) * | 2020-07-17 | 2020-10-20 | 广东Tcl智能暖通设备有限公司 | Control method and control device of air conditioner, air conditioner and storage medium |
| CN112432256A (en) * | 2020-11-30 | 2021-03-02 | 珠海格力电器股份有限公司 | Control circuit board, electrical box, air conditioning system and control method thereof |
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