Jet augmenting compressor and air conditioner

Abstract

The utility model discloses a kind of jet augmenting compressor and air conditioner, jet augmenting circuit is opened on baffle, upper end of baffle is provided with upper cylinder, lower end is provided with lower cylinder, and upper cylinder compression cavity and lower cylinder compression cavity are communicated by jet augmenting circuit, double cylinder synchronous augmenting is realized, and augmenting gas path is simple, the equal distribution of main circuit refrigerant between upper and lower cylinder is ensured, the path of main refrigerant gas and augmenting gas does not cross, energy loss is avoided, and gas circulation quantity and compression efficiency are improved. Avoid the problem of volumetric efficiency decline and poor system matching caused by unreasonable flow path design.

Description

Technical Field

[0001] This utility model belongs to the field of compressor technology and relates to a jet enthalpy-increasing compressor and an air conditioner. Background Technology

[0002] With the widespread application of low-temperature heat pump heating systems in cold regions, the requirements for the heating performance and energy efficiency of compressors are becoming increasingly stringent. Conventional rolling rotor compressors, when operating in low-temperature environments, often experience problems such as excessively high exhaust temperature, insufficient heating capacity, decreased volumetric efficiency, and reduced energy efficiency ratio due to increased compression ratio, increased suction specific volume, and reduced refrigerant circulation. These problems severely limit the application effect and energy utilization efficiency of heat pump systems in cold regions.

[0003] Vapor injection enthalpy enhancement technology, by injecting gas at intermediate pressure into the intermediate-pressure chamber, effectively reduces exhaust temperature, increases refrigerant flow, improves heating capacity, and enhances system energy efficiency, making it one of the key technologies for low-temperature heat pump systems. However, existing vapor injection enthalpy enhancement compressors rely heavily on experience or simplified models in their injection port design, lacking systematic calculation methods. This empirical design approach has several significant drawbacks: first, inaccurate injection timing may lead to premature or delayed gas injection, affecting the enthalpy enhancement effect; second, imprecise control of the injected gas quantity may cause pressure fluctuations or energy losses in the compression chamber; and third, it lacks adaptability to changes in system operating parameters, resulting in unstable performance under different operating conditions. These problems lead to low injection efficiency and poor system compatibility, severely restricting the full realization of the effects of vapor injection enthalpy enhancement technology. Utility Model Content

[0004] The purpose of this invention is to solve the problems in the prior art where the unreasonable setting of the injection port in the jet enthalpy enhancement circuit leads to a complex jet gas flow path and uneven gas distribution in the main circuit results in low efficiency of the coordinated operation of the upper and lower cylinders, and to provide a jet enthalpy enhancement compressor and air conditioner.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: A jet enthalpy-enhancing compressor includes a cylinder assembly, a core assembly disposed inside the cylinder assembly, the core assembly being connected to a motor, an upper outer cover assembly disposed at the upper end of the cylinder assembly, and a main circuit liquid reservoir and a jet liquid reservoir disposed outside the cylinder assembly, both of which are in communication with the interior of the core assembly; The movement assembly includes a crankshaft, a partition is provided on the crankshaft, a jet enthalpy enhancement circuit is provided on the partition, an upper cylinder is provided at the upper end of the partition, and a lower cylinder is provided at the lower end. The jet enthalpy enhancement circuit is connected to the compression chamber of the upper cylinder and the compression chamber of the lower cylinder respectively.

[0006] The further improvement of this utility model is as follows: The upper cylinder is equipped with an upper rotor, which is sleeved on the crankshaft; The lower cylinder is equipped with a lower rotor, which is sleeved on the crankshaft; The upper rotor is provided with an upper cover and an upper silencing cover in sequence at its upper end, and the lower rotor is provided with a lower silencing cover at its lower end.

[0007] The jet enthalpy enhancement circuit includes a flow channel, one end of which is connected to the jet reservoir and the other end of which is connected to the injection channel. One end of the injection channel is connected to the upper cylinder compression chamber and the other end of which is connected to the lower cylinder compression chamber. The port of the injection channel is the jet port.

[0008] An air inlet is provided in the upper cylinder, the air inlet is connected to the cavity, the cavity is provided along the axial direction of the upper cylinder, the cavity is located on one side of the upper cylinder cavity, the cavity is connected to the upper cylinder cavity, both ends of the cavity are flush with both ends of the upper cylinder cavity, and the upper and lower ends of the cavity are connected. A groove is formed inside the lower cylinder, the groove is formed along the axial direction of the lower cylinder, the groove is a recessed groove, the groove is formed on one side of the lower cylinder cavity, and the groove is connected to the lower cylinder cavity.

[0009] A through hole is provided on the partition plate, with the upper end of the through hole connected to the cavity and the lower end connected to the groove.

[0010] The flow channel is radially opened along the partition, and the injection channel is axially opened along the partition. The upper end of the injection channel is connected to the upper cylinder compression chamber, and the lower end is connected to the lower cylinder compression chamber.

[0011] A jetting circuit injection needle is provided at the outlet of the jetting reservoir. One end of the jetting circuit injection needle is connected to the jetting reservoir, and the other end is connected to the flow channel.

[0012] An air outlet bend is provided at the outlet of the injection reservoir, and the air outlet bend is connected to the injection needle of the injection circuit.

[0013] The injection reservoir is located between the main circuit reservoir and the cylinder assembly.

[0014] An air conditioner includes the aforementioned vapor enthalpy-increasing compressor.

[0015] Compared with the prior art, the present invention has the following beneficial effects: This utility model discloses a jet-induced enthalpy-enhancing compressor. The jet-induced enthalpy-enhancing circuit is located on a partition plate, with an upper cylinder at the upper end and a lower cylinder at the lower end. The jet-induced enthalpy-enhancing circuit connects the compression chambers of the upper and lower cylinders, achieving synchronous enthalpy enhancement in both cylinders. The enthalpy-enhancing gas path is simple, ensuring a balanced distribution of refrigerant in the main circuit between the upper and lower cylinders. The paths of the main refrigerant gas and the enthalpy-enhancing gas do not intersect, avoiding energy loss and improving gas circulation volume and compression efficiency. It avoids the problems of decreased volumetric efficiency and poor system matching caused by unreasonable flow path design.

[0016] Furthermore, flow channels and injection channels are opened on the partition to directly inject gas into the compression chambers of the upper and lower cylinders. The one-in-two-out structure reduces flow resistance and pressure loss, ensuring that the enthalpy-increasing gas can act on the two compression chambers quickly and in equal amounts.

[0017] Furthermore, the upper cylinder is provided with an axially through cavity with both ends flush, and the lower cylinder is provided with a recessed groove. The cavity and groove are connected by a through hole on the partition. The gas channel formed allows the refrigerant gas entering the upper cylinder to directly enter the upper cylinder cavity and the lower cylinder cavity, achieving uniform gas distribution in the gas path. This realizes efficient distribution of gas in the main circuit and precise injection of gas in the injection circuit, thereby improving gas flow efficiency. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the main circuit of the compressor with jet enthalpy enhancement function of this utility model.

[0020] Figure 2 This is a top view of the compressor structure with jet enthalpy enhancement function of this utility model.

[0021] Figure 3 This is a schematic diagram of the compressor structure with jet enthalpy enhancement function of this utility model - the injection circuit.

[0022] Figure 4 This is a schematic diagram of the mechanism assembly structure of this utility model.

[0023] Figure 5 This is a schematic diagram of the upper cylinder structure of this utility model.

[0024] Figure 6 This is a schematic diagram of the lower cylinder structure of this utility model.

[0025] Figure 7 This is a schematic diagram of the partition structure of this utility model.

[0026] Figure 8 This is a flowchart for calculating the position of the injection nozzle of this utility model.

[0027] Figure 9 This is a schematic diagram showing the determination of the geometric position of the injection nozzle of this utility model.

[0028] Figure 10 This is a graph showing the change in the volume of the compression chamber of this invention with rotation angle.

[0029] Figure 11 This is a comparison chart of the compression chamber pressure and the injection pressure of this utility model.

[0030] Figure 12 This is a cumulative mass curve of the injected gas for this invention.

[0031] Wherein: 1-Cylinder assembly; 2-Mechanical core assembly; 3-Motor; 4-Outer cover assembly; 5-Main circuit reservoir; 6-Main circuit cylinder tube; 7-Injection reservoir; 8-Injection circuit injection needle; 2-1-Upper cover; 2-2-Upper cylinder; 2-3-Baffle; 2-4-Lower cylinder; 2-5-Crankshaft; 2-6-Upper rotor; 2-7-Lower rotor; 2-8-Upper muffler; 2-9-Lower muffler; 2-2-1-Air inlet; 2-2-2-Cavity; 2-2-3-Upper cylinder cavity; 2-2-6-Compressor cylinder center O; 2-2-5-Air inlet; 2-3-1-Flow channel; 2-3-2-Injection channel; 2-3-3-Through hole; 2-3-4-Injection port; 2-4-1-type groove; 2-4-2-lower cylinder cavity.

[0032] 5-1-Inlet pipe; 5-2-Liquid reservoir body; 5-3-Liquid reservoir outlet bend; 7-1-Inlet pipe; 7-2-Injection circuit reservoir body; 7-3-Outlet bend pipe. Detailed Implementation

[0033] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0034] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0035] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0036] In the description of the embodiments of this utility model, it should be noted that if terms such as "upper," "lower," "horizontal," or "inner" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the utility model product is in use, they are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the utility model. Furthermore, terms such as "first" and "second" are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0037] Furthermore, the use of the term "horizontal" does not imply that the component must be absolutely horizontal, but rather that it can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0038] In the description of the embodiments of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0039] The present invention will now be described in further detail with reference to the accompanying drawings: See Figures 1 to 12 This utility model discloses a jet enthalpy-enhancing compressor. Through an innovative gas flow path structure design, the enthalpy-enhancing gas is injected into the compression chamber at the optimal time and in a precise amount, thereby significantly improving the compressor's operating efficiency, heating capacity, and reliability in low-temperature environments.

[0040] Example 1 This embodiment discloses a jet enthalpy-enhancing compressor, including a cylinder assembly 1, a core assembly 2 disposed inside the cylinder assembly 1, the core assembly 2 being connected to a motor 3, an upper outer cover assembly 4 disposed at the upper end of the cylinder assembly 1, and a main circuit liquid reservoir 5 and a jet liquid reservoir 7 disposed on the outer side of the cylinder assembly 1, both of which are in communication with the interior of the core assembly 2; The main circuit reservoir 5 and the injection reservoir 7 are fixed to the outside of the cylinder by brackets and clamps 11, respectively. The main circuit gas enters the air inlet 2-2-1 of the upper cylinder 2-2 via the main circuit reservoir 5 and cylinder insertion pipe 6. The gas is divided into two paths within the U-shaped cavity 2-2-2, entering the upper and lower cylinder cavities respectively. The injection circuit gas enters the injection channels 2-3-1 and 2-3-2 of the partition 2-3 via the injection reservoir 7 and injection needle 8, and finally is injected into the compression chamber through the injection port 2-3-4. The injection enthalpy enhancement circuit is located within the core assembly 2.

[0041] Furthermore, in this embodiment, the specific structure of the movement assembly 2 is as follows: The movement assembly 2 includes a crankshaft 2-5, and the crankshaft 2-5 is provided with an upper muffler 2-8, an upper rotor 2-6, a partition 2-3, a lower rotor 2-7 and a lower muffler 2-9 from top to bottom; An upper cylinder 2-2 is sleeved on the outside of the upper rotor 2-6, and a lower cylinder 2-4 is sleeved on the outside of the lower rotor 2-7; The jet enthalpy enhancement circuit is located on the partition 2-3. The jet enthalpy enhancement circuit is connected to the upper cylinder compression chamber and the lower cylinder compression chamber respectively. A through hole 2-3-3 is provided on the partition 2-3, which connects the upper cylinder 2-2 and the lower cylinder 2-4.

[0042] Furthermore, the upper cylinder 2-2 and the lower cylinder 2-4 are structured as follows: The upper cylinder 2-2 is provided with an air inlet 2-2-1 and a U-shaped cavity 2-2-2. The U-shaped cavity 2-2-2 is perpendicular to the upper and lower end faces of the upper cylinder. The cavity 2-2-2 is located on one side of the upper cylinder cavity 2-2-3. One end of the cavity 2-2-2 is connected to the air inlet 2-2-1, and the other end is flush with the end face of the upper cylinder cavity 2-2-3. The lower cylinder 2-4 is provided with a U-shaped groove 2-4-1. The groove 2-4-1 is a recessed groove that is perpendicular to the upper and lower end faces of the lower cylinder 2-4. The groove 2-4-1 is opened on one side of the lower cylinder cavity 2-4-2, with one end connected to the lower cylinder cavity 2-4-2 and the other end closed. The partition 2-3 is provided with a flow channel 2-3-1 and an injection channel 2-3-2 for injecting enthalpy-increasing gas. The flow channel 2-3-1 and the injection channel 2-3-2 are perpendicular to each other and are interconnected. The flow channel 2-3-1 is opened radially along the partition 2-3, and the injection channel 2-3-2 is opened axially along the partition 2-3. The partition 2-3 is also provided with a through hole 2-3-3 connecting the cavity 2-2-2 and the groove 2-4-1.

[0043] Furthermore, a jetting circuit injection needle 8 is provided at the outlet of the jetting reservoir 7. One end of the jetting circuit injection needle 8 is connected to the jetting reservoir 7, and the other end is connected to the flow channel 2-3-1.

[0044] Furthermore, the main circuit gas flow path is as follows: The refrigerant gas enters through the inlet pipe 5-1 of the main circuit receiver 5, passes through the receiver cylinder 5-2, and then through the receiver outlet bend pipe 5-3. It then enters the inlet hole 2-2-1 through the main circuit cylinder insertion pipe 6. The cavity 2-2-2 divides the refrigerant gas into two paths: one path enters the upper cylinder cavity 2-2-3, and the other path passes through the through hole 2-3-3 of the partition 2-3 and enters the groove 2-4-1 of the lower cylinder 2-4, and finally enters the lower cylinder cavity 2-4-2.

[0045] Furthermore, the gas flow path in the injection circuit is as follows: The enthalpy-increasing refrigerant gas enters through the inlet pipe 7-1 of the injection receiver 7, passes through the injection circuit receiver cylinder 7-2, and then through the outlet bend 7-3. It is then injected into the flow channel 2-3-1 of the partition 2-3 by the injection needle 8 of the injection circuit. The gas then enters the injection channel 2-3-2 and is finally injected into the upper cylinder compression chamber and / or the lower cylinder compression chamber.

[0046] Furthermore, the outlet bend 7-3 of the injection reservoir 7 adopts a bend design and is placed in the area between the main circuit reservoir 5 and the cylinder assembly 1 after assembly, thereby effectively saving circumferential space during compressor installation.

[0047] Furthermore, the injection reservoir 7 is fixed to the injection needle 8 of the injection circuit and the cylinder connecting pipe 1-1 by welding, and the upper end is fixed to the cylinder by a clamp 9, which makes the structure stable and ensures the sealing and mechanical strength of the connection.

[0048] Furthermore, the outlet bend 7-3 of the jet reservoir 7 adopts a bend design at a specific angle, which allows it to be compactly arranged in the narrow space between the main circuit reservoir 5 and the cylinder 1, greatly optimizing the overall external dimensions of the machine.

[0049] Furthermore, this embodiment also discloses a method for determining the location of the injection nozzle: This embodiment discloses a method for determining the injection port of a jet enthalpy-enhancing compressor, including the following steps: This embodiment uses the above cylinder as an example for calculation: Step 1: Determine the opening angle θopen and closing angle θclose of the nozzle in the vapor injection enthalpy enhancement circuit of the compressor; Step 2: Based on the calculated opening angle θ_open and closing angle θ_close, and combined with the compressor geometry, determine the specific position and outline of the injection port (2-3-4) on the baffle (2-3) using the "three-circle positioning" geometric drawing method. The specific steps are as follows: Step 2.1: Draw a base circle with the cylinder center O (2-2-6) as the center and the eccentricity (e) of the eccentric shaft as the radius (re); Step 2.2: On the base circle, locate points Q and G respectively according to the opening angle θ_open and the closing angle θ_close; Step 2.3: Draw two auxiliary circles with points Q and G as centers and the outer radius (r_outer) of the rotor (2-6) as the radius; Step 2.4: Draw the intersection point N of the two auxiliary circles, and connect the intersection point N with the cylinder center O to obtain the connecting line L; Step 2.5: Connect line L to the base circle at point M. With point M as the center and the inner circle radius (r_inner) of rotor (2-6) as the radius, draw the inner circle trajectory circle of rotor. Step 2.6: A common area is defined by the base circle, the two auxiliary circles, and the inner circle trajectory circle of the rotor. This common area is the settable area of ​​the injection port (2-3-4). Step 2.7: Draw the maximum inscribed circle within the settable area to determine the maximum allowable machining profile of the injection port (2-3-4).

[0050] Furthermore, verify the nozzle position: through motion simulation or geometric analysis, verify whether the determined nozzle position meets the following requirements: Gas can be injected smoothly during the opening period (θ_open to θ_close); It can effectively seal during the closing period (after θ_close) to prevent gas backflow; It will not interfere with moving parts (such as rotors 2-6); It is easy to process and assemble.

[0051] Furthermore, in step 1, the opening angle θ of the nozzle in the vapor injection enthalpy enhancement circuit of the compressor is determined. open and closing angle θ close ,include: Step 1.1: Determining the nozzle opening angle: The injection port (2-3-4) should be opened between 10° before the compressor inlet port (2-2-5) closes and the moment it closes.

[0052] Step 1.2: Calculation of the nozzle closing angle: Determined through rigorous iterative calculation, mainly based on the comparison between the gas pressure in the compression chamber and the gas pressure in the injection circuit.

[0053] First, initial conditions are set: Set the inlet gas pressure P in The gas pressure at the injection port, P inj Inlet gas temperature T in The temperature of the gas at the injection nozzle, T inj Injected gas quality requirements m inj-req The compressor's structural parameters (such as cylinder diameter D, eccentricity e, cylinder height L, and the ratio of eccentricity to rotor radius λ), operating frequency f, and refrigerant properties (such as adiabatic index k, gas constant R, and flow coefficient C) are also important. d ).

[0054] Secondly, iteratively calculate the gas state in the compression chamber: using the compressor rotation angle θ as the step size (recommended for every 1° rotation), calculate the following parameters sequentially: a. Compression chamber volume V(θ): V(θ) = V min + 0.5×e×D×L×[1 - cos(θ) + (λ / 4)×(1 - cos(2θ))](1) b. Gas state parameters: Gas density: ρ = ρ(P, T) (calculated from the refrigerant property table or equation of state) (2) Specific internal energy: u = u(P, T) (calculated from the refrigerant property table or equation of state) (3) Gas mass: m gas = ρ × V(θ)(4) c. Injection gas parameters: Enthalpy of injected gas: h inj = h(P inj , T inj (5) Jet gas density: ρ inj = ρ(P inj , T inj (6) Injection pressure difference: ΔP = P inj - P cavity (7) Critical pressure ratio determination: such as P cavity / P injIf ≤ (2 / (k+1))^(k / (k-1)), then it is a critical flow (8). Injected gas velocity: v at critical flow inj = C_d × √(k × R × T inj ), subcritical flow v inj = C_d × √(2 × |ΔP| / ρ inj (9) d. Mass conservation calculation: Time step: Δt = 1 / (6×f)(10) Injected gas volume: ΔV inj = v inj × A inj × Δt(11) Mass of injected gas: Δm inj = ρ inj × ΔV inj (12) Updated gas mass: m gas-new = m gas + Δm inj (13) e. Energy conservation calculations: m gas-new × u new = m gas × u + P × ΔV + Δm inj × h inj (14) The new specific internal energy u is obtained by solving this equation. new .

[0055] f. Calculation of new state parameters: New density: ρ new = m gas-new / V(θ)(15) New pressure: P new = P(ρ new , u new (Calculated based on the PR equation of state) (16) New temperature: T new = T(ρ new , u new (Calculated based on the PR equation of state) (17) Determine the closure condition: When calculation finds P new >P inj When, determine the angle θ close This is the theoretical angle at which the nozzle closes.

[0056] System requirement verification: Calculate the theoretical closing angle θclose The cumulative mass of gas injected at any time m inj-total If m inj-total <m inj-req Then the nozzle parameters need to be adjusted (such as opening the nozzle angle earlier, increasing the nozzle diameter A). inj Increase injection pressure P inj Then, the iterative calculation is repeated until m is satisfied. inj-total ≥ m inj-req .

[0057] Furthermore, depending on the specific application, the following steps are included: First, determine the initial parameters based on the system design requirements (e.g., operation at an ambient temperature of -25°C), including the inlet pressure P. in =0.8 MPa (abs), temperature T in = -10 °C, injection nozzle pressure P inj = 2.1 MPa (abs), temperature T inj = 25 °C, injected gas mass requirement m inj-req = 0.5 g, compressor operating frequency f = 90 Hz, refrigerant is R410A, and its physical properties (k, R, etc.), compressor structural parameters (D = 40 mm, e = 3 mm, L = 25 mm, λ = 0.18).

[0058] Then the iterative calculation process is initiated, with parameters... Figure 4 With crankshaft rotation angle θ as the variable (from θ open To begin, with a step size of 1°, perform the following calculations in a loop: a. Calculate the compression chamber volume V(θ) at the current rotation angle θ according to formula (1).

[0059] b. Calculate the current gas state (ρ, u, m) according to formulas (2)-(4). gas ).

[0060] c. Calculate the injection gas parameters (h) according to formulas (5)-(9). inj , ρ inj , ΔP, v inj ).

[0061] d. Perform mass conservation calculations according to formulas (10)-(13) to obtain Δm. inj and m gas-new .

[0062] e. Perform energy conservation calculations according to formula (14) to solve for the new specific internal energy u. new .

[0063] f. Calculate the new pressure P according to formulas (15)-(17) and the Peng-Robinson equation of state. new and temperature T new .

[0064] g. Determine whether P is satisfied. new >P inj If the condition is met, record the current angle as θ. close If the loop fails, θ is incremented by one step and the af step is repeated.

[0065] Calculate to θ close The cumulative m over time inj-total and with m inj-req Comparison. If m inj-total If the g is less than 0.5 g, adjust the parameters (e.g., adjust θ). open After 5° advance, re-perform the iterative calculation until the requirements are met.

[0066] Assuming the final calculation yields θ open = 160° (with a reference point as 0°), θ close = 235°.

[0067] Next, the "three-circle positioning" geometric construction method is used to determine the position of the injection nozzle: Establish a coordinate system with the cylinder center O (2-2-6) as the origin. The eccentricity e = 3 mm, the outer radius of the rotor r_outer = 25 mm, and the inner radius of the rotor r_inner = 10 mm.

[0068] S1: Draw a base circle with O as the center and e=3mm as the radius.

[0069] S2: On the base circle, measure 160° and 235° from the baseline to locate points Q and G.

[0070] S3: Draw two auxiliary circles with Q and G as centers and r_out = 25mm as radius.

[0071] S4: Draw an intersection point N of the two auxiliary circles, connect N and O, and the line connecting them intersects the base circle at point M.

[0072] S5: Draw the inner circle trajectory of the rotor with M as the center and r = 10mm as the radius.

[0073] S6: The common area defined by the base circle, the two auxiliary circles, and the inner circle trajectory circle of the rotor is the settable area of ​​the injection port (2-3-4).

[0074] S7: Draw the largest inscribed circle within this area; the diameter of this circle is the maximum permissible diameter of the injection nozzle. Based on actual engineering conditions, a circular hole with a diameter of 1.5mm can be determined as the final machining shape of the injection nozzle (2-3-4).

[0075] Motion simulation verification shows that this position meets the requirements for opening, sealing, and no interference.

[0076] Tests showed that the compressor manufactured using the design and method of this embodiment has a heating capacity that is about 22.3% higher than that of a conventional compressor, a discharge temperature that is about 18.7°C lower, and an energy efficiency ratio that is about 15.8% higher under low temperature conditions of -25°C, thus verifying the effectiveness and advancement of this utility model.

[0077] This invention, through a unique U-shaped cavity and U-groove flow path design, achieves efficient gas distribution in the main circuit and precise gas injection in the injection circuit, thus improving gas flow efficiency. A scientific iterative calculation model is used to determine the injection port position, replacing empirical design, significantly improving the efficiency and control accuracy of jet enthalpy enhancement. Experiments show that heating capacity can be increased by 15-25%, and exhaust temperature reduced by 10-20°C. The bend design and compact layout of the injection receiver optimize the overall structure and save installation space. This method is highly versatile and repeatable, applicable to various compressor models and refrigerants, reducing development costs and time.

[0078] The above are merely preferred embodiments of this utility model and are not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A jet enthalpy-enhancing compressor, characterized in that, The device includes a cylinder assembly (1), a core assembly (2) is installed inside the cylinder assembly (1), the core assembly (2) is connected to a motor (3), an upper outer cover assembly (4) is installed at the upper end of the cylinder assembly (1), a main circuit liquid reservoir (5) and a jet liquid reservoir (7) are installed on the outside of the cylinder assembly (1), and the main circuit liquid reservoir (5) and the jet liquid reservoir (7) are both connected to the inside of the core assembly (2); The mechanism assembly (2) includes a crankshaft (2-5), a partition (2-3) is provided on the crankshaft (2-5), a jet enthalpy enhancement circuit is provided on the partition (2-3), an upper cylinder (2-2) is provided at the upper end of the partition (2-3), a lower cylinder (2-4) is provided at the lower end, and the jet enthalpy enhancement circuit is connected to the compression chamber of the upper cylinder and the compression chamber of the lower cylinder respectively.

2. The jet enthalpy-enhancing compressor according to claim 1, characterized in that, The upper cylinder (2-2) is equipped with an upper rotor (2-6), which is sleeved on the crankshaft (2-5); The lower cylinder (2-4) is equipped with a lower rotor (2-7), which is sleeved on the crankshaft (2-5); The upper rotor (2-6) is provided with an upper cover (2-1) and an upper silencer (2-8) in sequence at its upper end, and the lower rotor (2-7) is provided with a lower silencer (2-9) at its lower end.

3. The jet enthalpy-enhancing compressor according to claim 1, characterized in that, The jet enthalpy enhancement circuit includes a flow channel (2-3-1), one end of which is connected to the jet reservoir (7) and the other end is connected to the injection channel (2-3-2). One end of the injection channel (2-3-2) is connected to the upper cylinder compression chamber and the other end is connected to the lower cylinder compression chamber. The port of the injection channel (2-3-2) is the jet port (2-3-4).

4. A jet enthalpy-enhancing compressor according to claim 3, characterized in that, An air inlet (2-2-1) is provided inside the upper cylinder (2-2), and the air inlet (2-2-1) is connected to the cavity (2-2-2). The cavity (2-2-2) is opened along the axial direction of the upper cylinder (2-2), and the cavity (2-2-2) is located on one side of the upper cylinder cavity (2-2-3). The cavity (2-2-2) is connected to the upper cylinder cavity (2-2-3), and both ends of the cavity (2-2-2) are flush with both ends of the upper cylinder cavity (2-2-3). The upper and lower ends of the cavity (2-2-2) are connected. A groove (2-4-1) is provided inside the lower cylinder (2-4). The groove (2-4-1) is provided along the axial direction of the lower cylinder (2-4). The groove (2-4-1) is a recessed groove. The groove (2-4-1) is provided on one side of the lower cylinder cavity (2-4-2). The groove (2-4-1) is connected to the lower cylinder cavity (2-4-2).

5. A jet enthalpy-enhancing compressor according to claim 4, characterized in that, A through hole (2-3-3) is provided on the partition plate (2-3). The upper end of the through hole (2-3-3) is connected to the cavity (2-2-2), and the lower end is connected to the groove (2-4-1).

6. A jet enthalpy-enhancing compressor according to claim 5, characterized in that, The flow channel (2-3-1) is radially opened along the partition (2-3), and the injection channel (2-3-2) is axially opened along the partition (2-3). The upper end of the injection channel (2-3-2) is connected to the upper cylinder compression chamber, and the lower end is connected to the lower cylinder compression chamber.

7. A jet enthalpy-enhancing compressor according to claim 3, characterized in that, The outlet of the jet reservoir (7) is provided with a jet circuit injection needle (8), one end of which is connected to the jet reservoir (7) and the other end is connected to the flow channel (2-3-1).

8. A jet enthalpy-enhancing compressor according to claim 3, characterized in that, An exhaust bend (7-3) is provided at the outlet of the injection reservoir (7), and the exhaust bend (7-3) is connected to the injection needle (8) of the injection circuit.

9. A jet enthalpy-enhancing compressor according to claim 1, characterized in that, The jet reservoir (7) is located between the main circuit reservoir (5) and the cylinder assembly (1).

10. An air conditioner, characterized in that, Includes the jet enthalpy-enhancing compressor as described in claim 4.

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