234results about "Refrigerants" patented technology

This refrigerant discharge device 100 discharges a refrigerant from a refrigeration device 1 having a refrigerant circuit 10 for enclosing the refrigerant and an odor component and circulating the refrigerant and the odor component. The refrigerant discharge device 100 includes a body part 111 storing a substance 101 for capturing the odor component. The refrigerant discharge device 100 includes: an introduction port 112 which is connected to the body part 111 and can introduce the refrigerant and the odor component discharged from the refrigeration device into the body part 111; and a discharge port 113 which is provided at a position different from the introduction port 112 in the body part 111 and can discharge the refrigerant from the body part 111 to a part other than the body part 111.

A refrigeration system is disclosed. The system includes a compressor, a condenser, an expansion device, and an evaporator, fluidically connected to form a refrigeration circuit. The system includes a refrigerant composition comprising an environmentally suitable chiller refrigerant having a 100-year direct global warming potential (GWP) of less than 150. The refrigerant composition includes a mixture comprising R-1336mzz-(Z) and R-1130-(E), wherein the amount of R-1336mzz-(Z) in the mixture is in a range of from or about 69% by weight to or about 81% by weight, and the amount of R-1130-(E) in the mixture is in a range of from or about 31% by weight to or about 19% by weight.

A heat source apparatus (1) includes: a cylinder (71) storing a flammable refrigerant and having, in a lower portion, a discharge port (71a) through which the flammable refrigerant is discharged; a casing (21) having a bottom plate (23) on which a compressor (12) and the cylinder are installed; and a restriction portion (80) configured to restrict a direction of displacement of the compressor when the heat source apparatus falls. In a top view with the heat source apparatus installed, a first straight line (L1) is defined as a straight line passing through a center of gravity (C1) of the compressor and a center of gravity (C2) of the cylinder. The restriction portion is configured to restrict the displacement of the compressor toward the cylinder to a direction deviating from the first straight line under a condition in which the first straight line is aligned with a direction of gravity.

The invention discloses refrigerant filling equipment for a horizontal rotational flow evaporator, which belongs to the technical field of refrigerant filling and comprises an injection mechanism for injecting an external refrigerant into the evaporator. The injection mechanism is provided with a pumping mechanism used for pumping out original redundant refrigerants in the evaporator and a connecting mechanism used for connecting the injection mechanism with the refrigerant injection opening. The pumping and injecting functions of the refrigerant are integrated in single gun body equipment, and the whole process can be controlled by switching the gear of the knob, so that the operation steps are greatly simplified, and the repair and maintenance efficiency is remarkably improved; a mechanical connecting mechanism based on gear transmission and a worm and gear self-locking effect is adopted, after the four fixing pieces are inserted into an injection opening, the four fixing pieces are indirectly driven to execute synchronous and symmetrical radial movement through rotation of the rotary knob, and therefore the four fixing pieces are firmly clamped on the outer wall of an evaporator refrigerant injection pipe; and stable and reliable connection between the filling equipment and the evaporator is ensured.

The invention relates to the technical field of medium recovery, and discloses a heat-conducting medium recovery system and a control method thereof. The recovery system comprises a negative pressure recovery loop, and in the negative pressure recovery loop, the input end of a first branch is connected with one end of target equipment, and the output end of the first branch is connected with a first gas-liquid separator; the input end of the second branch is connected with the top of the first gas-liquid separator, and a vacuum pump is arranged on the second branch; the upstream of the third branch is in heat exchange connection with the refrigerating loop, and the downstream of the third branch is provided with a second gas-liquid separator; the input end of the fourth branch is connected with the top of the second gas-liquid separator, a heater is arranged on the fourth branch, and the output end of the fourth branch is connected with the other end of the target equipment. According to the heat-conducting medium recovery system and the control method thereof, through closed negative pressure circulation, the loss of the heat-conducting medium in the recovery process can be reduced, and the pressure bearing risk of target equipment parts can be reduced.

Disclosed herein is a system for determining charge settings for a refrigeration circuit of an HVAC unit. The system comprises a controller comprising one or more processors coupled to a memory storing instructions executable by the processors, wherein the controller is configured to receive a set of data pertaining to an operating environment of the HVAC unit and an internal volume of the refrigeration circuit, estimate a saturated suction temperature of a refrigerant in the refrigeration circuit based on the operating environment, and determine a weight of the refrigerant to be added to the refrigeration circuit or a subcooling target temperature for a liquid line associated with the refrigeration circuit based on the estimated saturated suction temperature and the internal volume.

Provided is a method for treating a working fluid that improves the amount of an odorant to be separated. The method for treating the working fluid includes a step of preparing the working fluid (S1c), and a step of separating the odorant from refrigerant (S2c). The working fluid contains the refrigerant, a refrigerating machine oil, and the odorant. A boiling point Tb1 of the odorant is higher than a boiling point Tb2 of the refrigerant. In the step of separating (S1c), a temperature of the working fluid is maintained above the boiling point Tb1 of the refrigerant and below the boiling point Tb2 of the odorant.

The application provides a refrigerant recovery system and a control method thereof. The refrigerant recovery system comprises a to-be-recovered air conditioner, a liquid storage tank, a first heat exchanger, a second heat exchanger, a radiator, refrigerant pipelines and a coolant pipeline. The to-be-recovered air conditioner, the first heat exchanger and the liquid storage tank are arranged on the refrigerant pipelines, and the second heat exchanger and the radiator are arranged on the coolant pipeline. The first heat exchanger is connected with or arranged close to the second heat exchanger to cool the refrigerant in the first heat exchanger. The coolant after heat exchange in the second heat exchanger can enter the radiator. The radiator is arranged close to the to-be-recovered air conditioner to heat the refrigerant in the to-be-recovered air conditioner. According to the application, the pressure of the refrigerant entering the liquid storage tank can be reduced, that is, the pressure of the high-pressure part (exhaust) of the compressor can be effectively reduced. Meanwhile, the temperature and pressure of the refrigerant in the to-be-recovered air conditioner are improved, so that the high-low pressure ratio of the compressor is effectively reduced, and the recovery efficiency of the refrigerant is improved.

The purpose is to reduce the impact the cylinder receives from the compressor in the event that the casing falls. [Solution] The heat source device comprises a compressor (12) included in a refrigerant circuit (11) that performs a refrigeration cycle, a cylinder (71) that stores flammable refrigerant for filling the refrigerant circuit (11) and has an outlet (711) at its bottom for discharging the flammable refrigerant, a casing (21) having a bottom plate (23) on which the compressor (12) and the cylinder (71) are installed, and a plate member (81) disposed between the compressor (12) and the cylinder (71).

A device for recovery of refrigerant from a sealed heat transfer system includes a refrigerant conduit formed in the device for guiding a flow of refrigerant from the heat transfer system to a refrigerant outlet of the device, a refrigerant inlet to the refrigerant conduit. The refrigerant inlet can be provided in a surface of the device. The device can include a tool for providing an opening between an opening area of a part of the heat transfer system and the refrigerant inlet, a driver to drive a movement of the tool in order to provide the opening in the opening area. The device further includes a first gas conduit formed in the device for guiding a flow of gas between a first internal gas opening being provided in a surface of the device and a first external gas opening of the device.

The invention discloses an air conditioner outdoor unit, a refrigerant filling method and device and a storage medium. The air conditioner outdoor unit comprises a compressor, a one-way valve, a heat exchanger and a first stop valve, an output port of the compressor is connected with the heat exchanger through the one-way valve, an input port of the compressor is connected with the first stop valve, and a pipeline between the one-way valve and the heat exchanger is a first pipeline. The pipeline between the compressor and the first stop valve is a second pipeline, and refrigerants are arranged in the first pipeline, the second pipeline and the compressor. Under the condition of the same refrigerant injection amount, the air conditioner outdoor unit can store refrigerants in the first pipeline, the second pipeline and the compressor separately, so that in the process of transporting the air conditioner outdoor unit, the pressure generated when the refrigerants in the air conditioner outdoor unit are subjected to high temperature is lower than the pressure bearing capacity of the refrigerant pipeline; and pipe explosion can be reduced to a certain extent, and damage to the outdoor unit of the air conditioner is avoided.

A heat source unit (2) includes a refrigerant circuit (20), a refrigerant container (44), a connecting portion (43), a connection pipe (42), and a casing (41). The refrigerant circuit (20) includes a compressor (21) and a heat exchanger (23). The refrigerant container (44) is connected to the refrigerant circuit (20). The refrigerant container (44) is filled with a flammable refrigerant. The connecting portion (43) is connected to the refrigerant container (44). The connection pipe (42) connects the connecting portion (43) to the refrigerant circuit (20). The casing (41) accommodates the compressor (21), the first heat exchanger (23), the refrigerant container (44), the connecting portion (43), and the connection pipe (42). The refrigerant container (44) is supported by a bottom plate (413) of the casing (41).

A method of installing a split HVAC system includes purging and sealing new refrigerant lines using a pressurized, refrigerant-compatible fluid. A condenser having a service port and an evaporator are provided with at least two tubes configured to form a refrigerant circuit. A first tube is coupled between the condenser and the evaporator. A second tube is coupled to the evaporator while its condenser-side end remains unattached. A fluid container with a valve and a service-port fitting is connected to the condenser service port and opened to drive the pressurized fluid through the tubes. Purging is confirmed by fluid discharge from the unattached end of the second tube, after which that end is connected to the condenser, optionally while discharge continues to maintain positive pressure for leak checking. The container may be partially removed while leaving the fitting attached so residual fluid vents through the service port before final disconnection.

Provided are a device and a method for achieving homogenization when filling a subdivision container during manufacturing of a mixed refrigerant device, homogenization of composition when filling a mixed refrigerant in a heat pump cycle, and homogenization of composition of the mixed refrigerant during operation of the heat pump cycle. The device is provided with: a raw material container for storing a mixed refrigerant in a state in which the mixed refrigerant is separated into a liquid phase and a gas phase; the gas-liquid mixing device is used for uniformly mixing the liquid phase and the gas phase; a pump which respectively measures and introduces a liquid phase and a gas phase of the mixed refrigerant from the raw material container and transfers the liquid phase and the gas phase to the gas-liquid mixing device; and a pump for metering the mixed refrigerant in the gas-liquid mixing device and transferring the mixed refrigerant to the subdivision container after the gas-liquid mixing device is operated for a predetermined time. In the present invention, a mixed refrigerant container is provided in the middle of the piping of a heat pump cycle to fill a refrigerant, and the refrigerant can be circulated in the mixed refrigerant container even when the heat pump is operated after the completion of the filling. In addition, the mixed refrigerant container has a gas-liquid mixing function.

Provided is a method for discharging refrigerant that improves the amount of an odorant to be separated. The method for discharging the refrigerant includes a step of discharging the refrigerant containing an odorant from a refrigeration cycle apparatus (S1a), and a step of separating the odorant from the refrigerant (S2a) after the step of discharging (S1a). A boiling point Tb2 of the odorant is higher than a boiling point Tb1 of the refrigerant. In the step of discharging (S1a), the refrigerant is discharged together with a refrigerating machine oil. In the step of separating (S2a), the refrigerant containing the odorant is cooled to a temperature Tc between the boiling point Tb2 of the odorant and the boiling point Tb1 of the refrigerant. The temperature Tc is above a melting point Tm2 of the odorant.

Methods for forming an improved, centralized refrigeration systems by: (a) providing an existing refrigeration circuit with an existing high GWP refrigerant; (b) disconnecting the fluid connection between the existing refrigerant liquid from the condenser and the evaporators; (c) disconnecting the fluid connection between the existing refrigerant vapor from the evaporators and the compressor suction; (d) establishing a new first refrigeration circuit comprising the compressor and the condenser; (e) establishing a new second refrigeration circuit comprising the evaporators by removing existing refrigerant from the evaporators and the disconnected conduits and replacing the removed refrigerant with a second refrigerant comprising at least 50% of R1234ze(E) and being Class Al and having an OEL greater than 400 and a GWP of about 150 or less; and thermally interconnecting the new first refrigeration circuit and the new second refrigeration circuit with an inter-circuit heat exchanger.

To provide a quick and convenient way to convey lubricants into an A / C system without the use of a manual injector.SOLUTION: Compositions, systems, and methods for introducing lubricants and additives designed to work with environmentally friendly refrigerants into vehicle heat management systems including passenger compartment air-conditioning (A / C) systems are disclosed. Methods for loading lubricants and specific additives using environmentally desirable (low GWP) refrigerant or refrigerant blend compositions into an environmentally friendly system, such as a system that uses HFO-1234yf, are also disclosed.SELECTED DRAWING: Figure 1

A refrigerant leakage determination method includes the following steps. A refrigerant circuit formed by connecting a heat source unit and a utilization unit by a connection pipe is filled with a refrigerant of a first filling amount smaller than a target filling amount. Then, a first trial operation of circulating the refrigerant of the first filling amount in the refrigerant circuit is performed, and first trial operation data is acquired. Then, after the step of acquiring, the refrigerant circuit is filled with the refrigerant until the target filling amount is reached. Thereafter, normal operation data is acquired during a normal operation after filling the refrigerant circuit with the target filling amount. Subsequently, the presence or absence of a refrigerant leakage from the refrigerant circuit is determined on the basis of the normal operation data and the first trial operation data.

A process of thermal management fluid reclamation is provided. The process includes collecting at least one recovered thermal management fluid including at least a first refrigerant compound and a second refrigerant compound to form a collected thermal management fluid; and forming a blend constituent from the collected thermal management fluid in the absence of distillation or substantially in the absence of distillation. The blend constituent is azeotropic, azeotrope-like, or close-boiling. The blend constituent is configured to be combined with (i) one or more refrigerant compounds, and / or (ii) one or more blends comprising two or more refrigerant compounds, for formation of a thermal management fluid product.

Carbon dioxide air conditioning system comprising a cooling device (2) with a refrigerant circuit (3), wherein carbon dioxide (K) is incorporated as a refrigerant in the refrigerant circuit (3) and wherein the refrigerant circuit (3) comprises means for evaporating and condensing the carbon dioxide (K).

A transport refrigeration system includes a compressor, a heat rejection heat exchanger, a flash tank, an expansion device and a heat absorption heat exchanger arranged in a serial refrigerant flow order to circulate a refrigerant; a controller configured to: determine a presence of at least one condition of the transport refrigeration system; and initiate a low refrigerant charge detection process in response to detecting the presence of the at least one condition of the transport refrigeration system.

The air conditioning device with the dual-mode operation mode comprises an outdoor unit part (10), an indoor unit part (20) and a battery (30), the outdoor unit part (10) is provided with an outdoor unit body (11), a containing body (13), a compressor (12), a condenser (14), an outdoor unit connector (15) and an outdoor unit air supply fan (16), the outdoor unit body (11) is provided with a plurality of first outdoor unit air suction holes (111) in the left side face and the right side face, and the outdoor unit connector (15) is provided with a plurality of second outdoor unit air suction holes (111) in the left side face and the right side face. A plurality of heated air discharge holes (113) are formed in the upper portion of the rear surface of the housing body (13), the front portion of the housing body (13) is open, a housing space (131) is formed in the housing body (13), a plurality of second outdoor unit suction holes (133) are formed in the left and right side portions of the housing body (13), and the second outdoor unit suction holes (133) protrude forward by a predetermined length from the front portion of the outdoor unit body (11). The compressor (12) is arranged at the front part of the interior of the outdoor unit body (11), the condenser (14) is connected with the compressor (12), is separated from the first outdoor unit suction hole (111) at a specified interval and is arranged at one side part of the rear part of the interior of the outdoor unit body (11), and the outdoor unit connector (15) is formed by protruding from a partition plate (132) at the rear part of the accommodating space (131) of the accommodating body (13). An outdoor unit blowing fan (16) is arranged at the other side part of the rear part of the interior of the outdoor unit body (11) at a specified interval from the heated air discharge hole (113); the indoor unit (20) is provided with an indoor unit body (21) having a space of a predetermined size formed therein, a plurality of indoor unit suction holes (211) formed in the left and right side surfaces, and a cooling air discharge hole (213) formed in the upper side of the front surface, an operation panel (23), an evaporator (22), an indoor unit blower fan (24), and an indoor unit connector (25). An operation panel (23) is arranged at the lower side part of the front surface of an indoor unit body (21) or the front center part of the upper surface of the indoor unit body (21), an evaporator (22) is separated from an indoor unit air suction hole (211) by a specified interval and is arranged at one side part of the interior of the indoor unit body (21), and an indoor unit blowing fan (24) is arranged at the other side part of the interior of the indoor unit body (21) and discharges cooling air through a cooling air discharge hole (213). The indoor unit connector (25) is formed to protrude from the center of the rear surface of the indoor unit body (21). The battery (30) is built in the lower portion of the outdoor unit body (11).

The application discloses a production line system, comprising: a transmission main line with transmission positions, work areas and a control module; the types of the work areas include at least two types, there are at least one group of adjacent two work areas, the number of the preceding work area is greater than the number of the subsequent work area, each of the work areas has a plurality of stations arranged in sequence along the transmission direction on one side of the corresponding transmission position, the first station of each of the work areas has at least one transmission position with no station arranged on the side as the distribution position of the work area, the last station of each of the work areas has at least one transmission position with no station arranged on the side leading to the next work area as the distribution position of the next work area; the control module preferentially distributes the products to be processed to the distribution position of the work area with the idle station according to the processing sequence, and then dynamically distributes the products to be processed of the corresponding distribution position to the corresponding idle station according to the idle state of each station in the work area. The application can improve the production efficiency.

The invention relates to the technical field of liquid cooling, and discloses an integrated system for refrigerant filling of a liquid cooling unit and a control method thereof.The integrated system comprises a control module, a vacuumizing module, a helium filling module, a helium recycling module, a refrigerant filling module and a mechanical arm module, and an integrated system refrigerant pipeline is arranged in the mechanical arm module; the vacuumizing module is used for vacuumizing a refrigerant pipeline of the liquid cooling unit based on the control instruction; the helium filling module is used for filling helium into a refrigerant pipeline of the liquid cooling unit based on the control instruction; the helium recovery module is used for recovering and purifying helium in a refrigerant pipeline of the liquid cooling unit based on the control instruction; the refrigerant injection module is used for injecting a refrigerant into a refrigerant pipeline of the liquid cooling unit based on the control instruction; the mechanical arm module is used for controlling connection and disconnection between the second end of the integrated system refrigerant pipeline and the liquid cooling unit refrigerant pipeline based on the control instruction. The system is high in integration level, the process period can be shortened, helium with high cost is recycled, and the cost and energy consumption are remarkably reduced.

This heat source device comprises: a cylinder (71) having a discharge port (71a) in the lower part thereof; a fan (30) for conveying air that exchanges heat with an air heat exchanger (13); and a casing (21) including a compressor (12), the air heat exchanger (13), and a bottom plate (23) on which the cylinder (71) is installed. The heat source device additionally comprises, inside of the casing (21), a partition member (45) for demarcating a first chamber (S1) in which the air heat exchanger (13) and the fan (30) are accommodated, and a second chamber (S2) in which the compressor (12) and the cylinder (71) are accommodated. The cylinder (71) is positioned closer to the first chamber (S1) than the compressor (12).

The invention relates to a cooling circuit for a gas-fed cooling system in a floating structure with a tank, the cooling circuit comprising a main loop through which a coolant flows, the main loop comprising: a compression device, a heat exchanger, an internal heat exchanger, and a turbo compressor (13), the cooling circuit comprising a regulating branch connected to the main loop, the regulating branch comprising a valve configured to control the flow of coolant in the regulating branch, the main loop comprising a pressure sensor, the valve controlling the amount of coolant present in the main loop based on the pressure measured by the pressure sensor.

A refrigerant leakage determination method includes the following steps. A refrigerant circuit (10) formed by connecting a heat source unit (20) and a utilization unit (30) by a connection pipe (5, 6) is filled with a refrigerant of a first filling amount smaller than a target filling amount (S1). Then, a first trial operation of circulating the refrigerant of the first filling amount in the refrigerant circuit (10) is performed, and first trial operation data is acquired (S2). Then, after the step (S2) of acquiring, the refrigerant circuit (10) is filled with the refrigerant until the target filling amount is reached (S4). Thereafter, normal operation data is acquired during a normal operation after filling the refrigerant circuit (10) with the target filling amount (S5). Subsequently, the presence or absence of a refrigerant leakage from the refrigerant circuit (10) is determined on the basis of the normal operation data and the first trial operation data (S6).

An air conditioner according to an embodiment of the present disclosure includes a housing, a compressor disposed inside the housing and configured to compress a refrigerant, a first heat exchanger disposed inside the housing and configured to exchange heat with outdoor air, a second heat exchanger disposed inside the housing and configured to exchange heat with indoor air, a refrigerant pipe connecting the compressor and the second heat exchanger and configured to allow the refrigerant to flow therein, and a charging pipe configured to charge the refrigerant pipe with the refrigerant. The refrigerant pipe includes a first sub-pipe and a second sub-pipe connected to the second heat exchanger and configured to receive the refrigerant that has passed through the second heat exchanger. The refrigerant pipe includes a main pipe connected to the compressor and configured to allow the refrigerant that has passed through the first sub-pipe and the second sub-pipe to be combined. The charging pipe may be configured to be connected to the first sub-pipe.

A system for capturing volatile fluids and agglomerations discharged from chemical and refrigerant systems during an overpressure situation includes an energy dissipation assembly that uses impact bars (116) and irregular surfaces to decrease the energy of such discharges by breaking up the agglomerations, and one or more tanks (154, 178) for capturing constituents for reuse, safe venting to atmosphere, or disposal.

There is proposed a heat source unit of an air conditioner that suppresses occurrence of pressure abnormality in a refrigerant flow path due to filled carbon dioxide refrigerant becoming supercritical. The heat source unit is connected to a utilization unit and constitutes the air conditioner. The heat source unit includes a compressor, a heat source heat exchanger, a first shutoff valve, a second shutoff valve, a refrigerant flow path, and a refrigerant. The refrigerant flow path is a flow path in which the compressor, the heat source heat exchanger, the first shutoff valve, and the second shutoff valve are connected by a refrigerant pipe. The refrigerant flow path is filled with the refrigerant. The refrigerant includes carbon dioxide. A filling amount V1 (kg) of the refrigerant filled in the refrigerant flow path, a volume V2 (L) of the refrigerant flow path, and a design pressure P (MPa) of the refrigerant flow path satisfy the following relationship. V1 × a ≤ V2 ≤ V1 × b, a = 0.078 × P2 - 2.111 × P + 15.771, and b = 0.055 × P2 - 1.768 × P + 16.144