What is the main function of an expansion valve or capillary?

The expansion valve removes pressure from the liquid refrigerant to allow expansion or change of state from a liquid to a vapor in the evaporator. The high-pressure liquid refrigerant entering the expansion valve is quite warm.

R290 Lbp Portable Ice Box Cooling Condensing Unit with Evaporator

Name: R290 Lbp Portable Ice Box Cooling Condensing Unit with Evaporator
Brand: RIGID HVAC CO., LTD.
SKU: 2184651545

Zhejiang, ChinaRIGID HVAC CO., LTD.

US$710.00

1 Piece

Sample price:US$710.00/piece.Request sample

Product profile

Customization

Available

After-sales Service

Yes

Warranty

One Year Warranty Since The Date of Shipment

Model NO.

DV3820-T

Principle

Rotary Compressor

Application

Back Pressure Type, Intermediate Back Pressure Type, High Back Pressure Type, Low Back Pressure Type

Performance

Low Noise, Variable Frequency

Mute

Less Than 48dB

Lubrication Style

Lubricated

Drive Mode

Motor

Configuration

Portable

Power Source

DC Power

Material

Stainless Steel

Voltage

24V DC

Cooling Capacity

450W(1535tu)

Refrigerant

R290

Rated Current

11A

Net Weight

5.0kgs (11lbs)

Motor Type

Brushless Inverter

Compressor Speed

1800-4500rpm

Cylinder Number

Twin-Cylinder

Transport Package

Export Standard Packaging

Specification

350x220x225(13.78x8.66x8.86 inch)

Trademark

RIGID

Origin

China

HS Code

8418699090

Production Capacity

30000pieces/Year

Key features

Ultra-Compact Direct Expansion: Eliminates ductwork and piping with direct contact to evaporator for highest heat transfer.

Low Noise Operation: Operates at less than 48dB for quiet performance in sensitive environments.

Eco-Friendly Refrigerant: Utilizes R290 refrigerant which is environmentally friendly and efficient.

Variable Frequency Drive: Brushless inverter motor with speed range of 1800-4500rpm for optimized efficiency.

Stainless Steel Construction: Durable stainless steel material ensures long-lasting performance and corrosion resistance.

Flexible Customization: Offers flexible customization options for voltage, cooling capacity, and other parameters.

One Year Warranty: Comprehensive one-year warranty coverage starting from the date of shipment.

CE Certified: Product meets CE safety and quality standards for international markets.

Company profile

High Repeat Buyers ChoiceR&D CapabilitiesQuality AssuranceLow MOQ

RIGID HVAC CO., LTD.

Zhejiang, China

CertifiedBusiness Type: Trading Company CertifiedCustomization Options: Flexible customization CertifiedExport Year: 7 Years CertifiedNearest Port: Ningbo PortAverage Response Time: ≤1.73h CertifiedTerms of Payment: LC, T/T, PayPal, etc.

AI-Powered supplier vetting

SummaryThe supplier is a limited trading company with eight employees, focused on miniature refrigeration and thermal-management products, including miniature compressors, DC air conditioning, compact liquid chillers, and free-piston Stirling coolers. It holds a valid import and export license, exports approximately 90% of sales, and serves domestic, East Asian, European, and North American markets. Stated production volumes are substantial across several product categories, but the supplier’s organizational scale and service infrastructure appear limited. It offers flexible customization but does not provide SDKs, ODM services, or OEM services for popular brands, and reports no new products in the past year. Service procedures exist for corrective actions and customer complaints, but written records are unavailable; no overseas service countries are identified. Financial data is only represented by years, without financial performance figures, so credibility cannot be assessed. No certifications or customer...

Supplier typeThe supplier is identified as a trading company and a limited company, with no larger corporate-group affiliation. It has eight employees and a valid import and export license, indicating a legally registered, independently operated trading entity rather than a stated manufacturing-group subsidiary.

After-Sales capabilityThe supplier has procedures for corrective and preventive actions and customer complaints, but no written records are maintained. It reports zero countries offering overseas services and only one qualified service-capability supplier, indicating limited documented and international after-sales support.

R&D capabilityThe supplier describes itself as a miniature compressor innovation leader and offers flexible customization, but it has no available SDK, reports no new products in the past year, and does not provide ODM services. The evidence supports product-domain positioning but not strong current innovation output or development infrastructure.

Production capacityThe supplier offers multiple refrigeration products and reports annual outputs of 50,000 condensing units, 30,000 free-piston Stirling cryocoolers, 50,000 custom cooling systems, 50,000 compact liquid chillers, and 100,000 DC compressors. These stated volumes indicate established supply capability, although the company has only eight employees and is classified as a trading company, so the underlying production ownership is not clarified.

Customization capabilityThe supplier explicitly provides flexible customization and lists custom cooling systems among its offerings. However, it does not provide ODM services, so customization is supported but does not extend to the stated ODM model.

Product Q&A

Q:What is DC Condensing Unit?

DC Condensing Unit is also named Direct Expansion. It means that the refrigerant expands to produce the cooling effect in a coil that is in direct contact with the conditioned air that will be delivered to the space.

Q:What Components Included In DC Condensing Unit?

RIGID DC Condensing Unit is consist of a mini compressor, controller, condenser, capillary, filter drier, as well as other small refrigeration parts.

Q:What is Condensing Unit Evaporator in mechanical engineering?

A direct expansion refrigeration unit, also known as a condensing unit, uses condensed refrigerant liquid to cool the air in a given space. It is widely used in micro refrigeration, small refrigerators, mobile freezers, medical, laser, precision instruments, laboratory equipment, etc.

Q:What are RIGID DC Condensing Units Advantages?

RIGID DC Condensing Unit System consists of an environmentally friendly Refrigerant, R290. It is built of Brushless Compressor and driver board, micro channel condenser, and highly efficient dc fan. The DC Condensing Unit is the optimized combination of efficiency, reliability, and ultra-compact size. A DC brushless motor powers the compressor and is available in DC 24V versions. Additionally, due to its small size, high reliability& efficiency, the direct expansion system has found numerous app

Q:How does a DC Condensing Unit system work?

The expansion parts (valve or capillary) control the flow of refrigerant into the evaporator coil. Hot air is extracted from the specific space and blown over the heat exchange coil by the evaporator/indoor fan. The refrigerant in the coil absorbs the heat and expands. This lowers the temperature of the air being blown into the space/room.